Recirculating Patents (Class 384/43)
-
Patent number: 7988360Abstract: Provided is a motion guide device having a scooping portion that is not damaged even when a moving member is moved at high speed. When seen in an axial direction of a track shaft 1, a direction change path 10 is inclined relative to a contact angle line L1 (line connecting a center C of a ball 3 and a bottom P1 of a ball rolling groove 1a). The direction change path 10 including a scooping portion 17 has a cross section of Gothic arch groove shape formed of two arcs R1 in such a manner that the ball 3 is in contact with the direction change path 10 at two points. The direction change path 10 is twisted in such a manner that a locus 18 of the top of the Gothic arch groove shape approaches the contact angle line L1 at the scooping portion 17.Type: GrantFiled: October 31, 2006Date of Patent: August 2, 2011Assignee: THK Co., Ltd.Inventors: Hiroaki Mochizuki, Tomozumi Murata, Takashi Sakuyama
-
Patent number: 7985024Abstract: The metallic mold 90 includes a product configuration portion 93 formed between an upper mold 91 and a lower mold 92. This product configuration portion 93 is composed so that a rolling element accommodating belt 50 formed by this product configuration portion 93 can include spacer portions interposed between balls adjacent to each other in an infinite circulating passage and also include connecting arm portions for connecting the spacer portions to each other and so that the balls can be aligned in the alignment direction in the infinite circulating passage. The upper mold 91 has a splitting structure. In this splitting structure, a splitting position BL is set at a position passing through a position 91t for forming an end portion on the outer circumferential side in the inner and outer circumferential direction of the infinite circulating passage of the spacer portions 51.Type: GrantFiled: June 21, 2007Date of Patent: July 26, 2011Assignee: NSK Ltd.Inventor: Jun Matsumoto
-
Patent number: 7980763Abstract: A motion guide device having a novel scoop section structure whose scoop section is not likely to break even if a movement member is moved at high speed. A scoop section (22) of a movement block (12) scoops balls (13) that roll in a ball rolling groove (11a) of a raceway rail (11) and introduces them into no-load ball return paths (17, 20). The scoop section (22) is formed in a Gothic arch groove shape in which the scoop section (22) is in two-point contact with a ball (13).Type: GrantFiled: August 25, 2005Date of Patent: July 19, 2011Assignee: THK Co., Ltd.Inventors: Hidekazu Michioka, Hiroaki Mochizuki, Takashi Sakuyama
-
Publication number: 20110135226Abstract: A linear motion guidance apparatus suppresses a waving phenomenon, and includes a track rail with rolling member rolling grooves along the longitudinal direction, a movable block with loaded rolling member rolling grooves that face the rolling member rolling grooves, and a plurality of balls rollably provided in loaded rolling paths formed of the rolling member rolling grooves and the loaded rolling member rolling grooves. The movable block can make reciprocating motion in the longitudinal direction of the track rail. The linear motion guidance apparatus is configured so that the diameter of each of the balls is 1/10 of the width of the track rail or smaller and the movable block has a block length compliant with ISO. The number L of endless circulation paths is L=4×N (N is a natural number greater than or equal to two), and in particular, the number of paths L is preferably eight.Type: ApplicationFiled: July 11, 2008Publication date: June 9, 2011Applicant: THK CO., LTD.Inventor: Toru Takahashi
-
Patent number: 7862236Abstract: A circumrotating circulating guiding assembly of a linear sliding rail includes a sliding base body, a plurality of guiding assembly and a plurality of rolling elements. The sliding base body has a plurality of engaging portions and a plurality of guiding holes. The sliding base body is provided longitudinally with engaging portions. The guiding assembly comprises two circumrotating guiding portions, a plurality of fixing portions, a spacer and a plurality of guiding tubes. The fixing piece is fixed to the engaging portion. The guiding portion is combined with the circumrotating guiding portion. The rolling element is provided on the circumrotating circulating path in a rolling manner. With the fixing pieces being fixed to the engaging portion, and the spacer being engaged in the recessed portion, the insufficient strength of the guiding assembly formed of plastic materials can be compensated, thereby avoiding the vibration, noise and excessive frictional resistance efficiently.Type: GrantFiled: August 27, 2007Date of Patent: January 4, 2011Assignee: OME Technology Co., Ltd.Inventor: Chiu-Tsun Chen
-
Patent number: 7845854Abstract: A motion guide device 10 includes a track rail 11 as a track member and a movable member 13 mounted to the track rail 11 via a plurality of balls 12. The plural balls 12 of the motion guide device 10 are disposed in an endless circulation passage 20 composed of a loaded rolling passage 15 formed between the track rail 11 and the movable member 13, and a non-loaded rolling passage formed to the movable member 13 so as to connect one and another ends of the loaded rolling passage 15. A portion of the track rail 11 or movable member 13 in the vicinity of the rolling member rolling surface thereof contacting to the plural balls 12 is formed of a metal material, and the other portion thereof is formed of an FRP. According to such structure, there can be provided a motion guide device 10 having a high strength and a high rigidity as well as a reduced weight.Type: GrantFiled: December 19, 2005Date of Patent: December 7, 2010Assignee: THK Co., Ltd.Inventors: Takeki Shirai, Toshikazu Yoshii
-
Patent number: 7832929Abstract: An end cap in the present linear motion guide unit is made up of an end cap major part and a spacer part, which, once assembled, define a turnaround passage between them to make sure of smooth running of the rolling elements. Especially, the turnaround passage in the end cap when viewed in the sliding direction of the slider is constituted with a curved route whose radius of curvature is constant, which extends from a center (Ok) of a load race to a center (Or) of a return passage, with making a detour to clear an upper edge of a track rail. A carriage of the slider has widthwise opposing return passages lying biased more sidewise inwards or center-ward than load races so as to make an interval or span (Pr) between the return passages less than a sidewise interval or span (Pk) between the load races. The curved route whose radius of curvature is constant, when viewed in the sliding direction of the slider, is arced over a semicircular range of 180 degrees.Type: GrantFiled: April 20, 2006Date of Patent: November 16, 2010Assignee: Nippon Thompson Co., Ltd.Inventors: Toyohisa Ishihara, Hideki Kuwabara
-
Patent number: 7806595Abstract: A miniature linear motion guide unit can eliminate the need for additional machining on a track rail, and thus improve the accuracy of the track rail and reduce the manufacturing costs. A track rail (R) having raceway grooves (4, 5) is fixed to a mounting surface by a fixing member (A). A slider (S) straddles and moves on the track rail. The fixing member has a recessed groove (7) formed in an opposing mounting face (6) facing the mounting surface and straddling the track rail. Part of the recessed groove is in contact with the track rail when the recessed groove straddles the track rail. A mounting hole (11) is drilled in a portion of the recessed groove of the fixing member away from the track rail. A stopper member (10) such as a bolt is inserted in the mounting hole and fixed to the mounting surface.Type: GrantFiled: July 5, 2007Date of Patent: October 5, 2010Assignee: Nippon Thompson Co., Ltd.Inventors: Kenji Takamiya, Yasuhiro Otsuji
-
Patent number: 7806017Abstract: A ball screw is provided having a ball roller screw (1) and a screw nut (2) arranged thereon, whereby the balls (3) are arranged to endlessly circulate in a ball channel (6) defined by ball tracks (4, 5) on the ball roller screw (1) and the screw nut (2). The ball channel (6) includes a load section (7) wound about the ball roller screw (1), the beginning and end of which are endlessly connected by a load-free return section (8). A minimum of two and a maximum of four balls (3) are housed in a common ball cage (10, 22), the cage pockets (11) of which each house one of the balls (3), whereby the ball cage (10, 22) includes discs (12, 15) at the axial ends thereof and between adjacent balls (3), that engage the ball channels (4, 5), and provided on the sides thereof facing the balls (3) with a concave receptacle (14) for the balls (3).Type: GrantFiled: July 8, 2005Date of Patent: October 5, 2010Assignee: Schaeffler KGInventors: Jurgen Osterlaenger, Dieter Adler, Manfred Kraus, Ralf Mayer, Jorg Wagner, Jean Walter, Dietmar Rudy
-
Patent number: 7798716Abstract: A linear device has an essentially rod-shaped functional unit and a functional unit that at least partially encompasses the rod-shaped functional unit and includes a main body and at least one end plate unit that rests with a contact surface against the main body in which a lubrication groove is provided, which is open toward the contact surface and extends at least partially in the circumference direction around the rod-shaped functional unit, and it is possible to fasten the end plate unit to the main body by only two fastening elements, and a region of the contact surface adjacent to the lubrication groove and encompassing this lubrication groove is raised in relation to the rest of the contact surface.Type: GrantFiled: July 27, 2005Date of Patent: September 21, 2010Assignee: Rexroth Star GmbHInventor: Alfred Haub
-
Patent number: 7798718Abstract: There is provided a rolling element accommodating belt for a linear guide apparatus which has a guide rail, a slider having a load rolling element guiding face which constitutes a rolling element track path together with the guide rail, a pair of direction converting paths and a rolling element return path, a plurality of rolling elements circulating within an endless circulation path defined by the rolling element track path, the pair of direction converting paths and the rolling element return path; and a guide groove. The rolling element accommodating belt includes a plurality of spacer portions interposed between the rolling elements, coupling arms to be guided by the guide grooves and rolling element accommodating portions accommodating the rolling element. The spacer has an inward abutting face abutting on the rolling element so as to prevent the rolling element from moving to inner diameter side of the endless circulation path.Type: GrantFiled: September 29, 2006Date of Patent: September 21, 2010Assignee: NSK Ltd.Inventors: Jun Matsumoto, Yoshinori Mizumura
-
Patent number: 7794150Abstract: A linear module has a rail with a longitudinal axis, a table part, and at least one linear guide device; the at least one linear guide device has a main part embodied so that it is integrally joined to the table part, two end caps, and at least one endless roller element circuit. The length of the table part measured in the direction of the longitudinal axis is greater than that of the linear guide device and at least one end cap is accommodated in a recess of the table part; the recess is open toward the underside of the table part and is delimited by the top surface of the table part, by at least one side wall of the table part, and by the main part of the linear guide device.Type: GrantFiled: January 14, 2008Date of Patent: September 14, 2010Assignee: Robert Bosch GmbHInventors: Bernhard Keller, Steffen Pfister
-
Patent number: 7789564Abstract: A linear rolling bearing, which has a guide carriage that is mounted by rolling bearings on a guide rail, and which has a scraper arranged at least one end side of the guide carriage for scraping foreign objects such as chips, dust and cooling liquids from the guide rail. The scraper is in scraping contact, by its scraping system, preferably by a sealing lip or sealing edge, with the guide rail. The scraper has a first stop for abutment against the guide rail, with the abutment of the first stop indicating an impermissible position of the scraper on the guide rail.Type: GrantFiled: December 17, 2005Date of Patent: September 7, 2010Assignee: Schaeffler KGInventors: Peter Keller, Dietmar Rudy
-
Patent number: 7780356Abstract: A slider for a linear motion rolling guide unit can ensure a smooth rolling movement and a reliable lubricating capability and eliminate the need for accurate dimension control to reduce the manufacturing costs. A lubricating member A has a lubricating face 20 exposed on an outer peripheral face of a turning corner 10 in an end cap 2. The rolling elements 11 are lubricated by making contact with the lubricating face 20 while rolling through the turning corner. The lubricating face 20, exposed on the arced face 10b of the turning corner, and the outer peripheral face of the turning corner maintain the relation of crossing each other at two intersections. The lubricating face 20 is longer than the distance between the two intersections. Recessed areas 21 are formed between the outer peripheral face of the turning corner 10 and the lubricating face 20 in the surplus length regions.Type: GrantFiled: September 5, 2008Date of Patent: August 24, 2010Assignee: Nippon Thompson Co., Ltd.Inventors: Hideki Kuwabara, Shigeki Kakei
-
Publication number: 20100209028Abstract: A linear motion device has a first assembly and a second assembly which is linearly movable relative to the first assembly, in which at least one, and preferably at least two, first rolling surface(s) which extend(s) in a longitudinal direction is/are provided on the first assembly, each first rolling surface being located opposite a second rolling surface provided on the second assembly, and in which a row of rolling elements is located between the first and second rolling surfaces, and in which the first assembly includes a single-pieced, first body and at least one return assembly, at least one return passage being provided in the first body, and furthermore in which at least one curved deflection passage is located entirely within the deflection assembly and connects the first rolling surface to the return passage in a manner such that the rolling elements may circulate endlessly, and in which at least one projection that engages in the return passage is provided on the deflection assembly.Type: ApplicationFiled: January 28, 2010Publication date: August 19, 2010Inventors: Steffen PFISTER, Bernhard KELLER
-
Publication number: 20100142866Abstract: A preload biased structure of a linear rail includes a rail and a sliding block disposed on the rail. The sliding block includes a sliding base, a supporting element, two connecting pieces and two locking pieces. The sliding element is provided with a connecting space. The front and rear end of the sliding base each is provided with abutting pieces. The abutting piece extends to form a biased block toward the connecting space. The biased block extends to form a biased slope. In assembling, the biased slope guides the supporting element to be inserted in the connecting space. The biased block provides a preloading force, whereby the supporting element can be fixed in the sliding base in advance. The locking pieces lock the two connecting pieces on both ends of the sliding base, so that the supporting element and the two connecting pieces can be assembled on the sliding base.Type: ApplicationFiled: March 19, 2009Publication date: June 10, 2010Inventor: Chin-Hsiang Wang
-
Publication number: 20100129012Abstract: A rolling element retainer is provided with two through rolling element retaining spaces. Each of the rolling elements retaining spaces is provided for accommodation of one rolling element. The rolling element retainer is provided with a linking portion at each of two opposite sides thereof. The rolling element retainer is further provided with a rolling element rolling channel in each of two external end surfaces thereof. The angular difference between the respective rolling element rolling channels and the respective linking portions is 0 degree or 90 degrees. By such arrangements, the rolling channels at two ends of the rolling element retainer are provided for contact with the rolling elements therebetween, so as to guide the movement of such rolling elements.Type: ApplicationFiled: November 24, 2008Publication date: May 27, 2010Inventor: Ming-Yao Lin
-
Publication number: 20100111456Abstract: A supporting track element for use in a linear ball bearing, with at least one outer surface which is outwardly curved in one direction, at least in some regions, and at least one track which is opposite the outer surface and is intended for at least partially receiving load-bearing balls of a linear ball bearing. In addition, the supporting track element in cross-section has at least one material interruption which forms two adjacent cross-sectional regions. The adjacent cross-sectional regions touch at least in the region of the outer surface. As a result, the supporting track element is produced cost-effectively without significant limitations to the functionality thereof occurring. A method for producing a supporting track element is also proposed. Furthermore, a linear ball bearing is equipped with supporting track elements.Type: ApplicationFiled: October 29, 2009Publication date: May 6, 2010Applicant: SCHAEFFLER KGInventor: Udo Klein
-
Publication number: 20100098358Abstract: Provided is a ball spline device, in which an outer diameter of a nut member can be downsized to the maximum while sufficiently performing an original function, and which can keep reliability while being capable of being simply manufactured at lower cost without involving time and effort in assembly, in which a nut member has a track groove which is formed on an inner peripheral surface facing a spline shaft, the balls circulating in the track groove, the track groove comprises: a linear load groove formed so as to face the ball rolling groove of the spline shaft; a linear non-load groove provided parallel to the linear load groove; and a pair of ball deflection grooves for communicably coupling the linear load groove and the linear non-load groove with each other so as to allow the balls to intercommunicate therebetween, and the ball deflection grooves forcibly change an advancing direction of the balls rolling in the ball rolling groove and cause the balls to depart from the ball rolling groove with use ofType: ApplicationFiled: November 13, 2007Publication date: April 22, 2010Applicant: THK CO., LTD.Inventor: Takeki Shirai
-
Patent number: 7677803Abstract: A quick release coupling device for a linear guideway comprises a rail, a slide block, a pair of end caps and a pair of connectors. Each of the end caps has a through hole in which are annularly arranged a slant rotary abutment surface and a plurality of grooves. The connectors each has an end fixed to the slide block, and another end of the connectors is defined with a wing-shaped portion, the wing-shaped portion has an abutment surface for mating with the rotary abutment surface of the end caps.Type: GrantFiled: October 7, 2005Date of Patent: March 16, 2010Assignee: Hiwin Technologies Corp.Inventors: Hsin-Liang Chen, Jin-Sheng Chen
-
Patent number: 7677804Abstract: A linear motion guide unit is provided in which a crowning portion available extensively for standard specification is made easily. The crowning portion is comparatively small in depth, and rich in high accuracy and high durability. A raceway groove for a load race in a carriage is made at an ingress/egress area thereof with the crowning portion of a curved profile that varies gently to allow the rolling element to move in and out of the load race with smoothness. The carriage is provided at the forward and aft ends of the raceway groove with rounded bevels, which are made in a curved contour merging into the associated crowning portion without causing any discontinuity at a junction of the rounded bevel with the crowning portion.Type: GrantFiled: March 23, 2005Date of Patent: March 16, 2010Assignee: Nippon Thompson Co., Ltd.Inventors: Toshiaki Geka, Hideaki Ogura
-
Publication number: 20100046864Abstract: A circulating structure for a linear guideway is arranged in a circulating assembly the linear guideway. The linear guideway includes two circulating assemblies, and each circulating assembly is provided with a circulating channel. Each circulating channel is provided with a third guiding groove. A rolling element system is arranged in the circulating channel and consists of plural rolling elements and a rolling element chain. The rolling element chain includes plural spacers and a linking portion located at both sides of the plural spacers to link them with one another. The linking portion circulates along the center line of the third guiding groove, and the third guiding grooves have a constant width.Type: ApplicationFiled: August 25, 2008Publication date: February 25, 2010Inventors: Tsung-Jen CHEN, Tzu-Yu Hung
-
Patent number: 7640820Abstract: A ball screw assembly has an axially extending screw with an external helical groove and a nut with a through bore for receipt of the screw. The through bore has an internal helical groove adapted for cooperation with the external helical groove to define a ball raceway. A plurality of load bearing balls is disposed in the raceway for rolling contact with the internal and external grooves. A spacer is disposed between adjacent ones of the load bearing balls to prevent the balls from contacting one another. Each of the spacers has at least three pairs of diametrically opposite concave dimples adapted for contact with the load bearing balls at separate times from one another.Type: GrantFiled: November 10, 2005Date of Patent: January 5, 2010Assignee: Danaher Motion, Inc.Inventors: Ryan B. West, Bir Inder Singh, Stephen R. Ahlers, Ryan P. Thomas, Gwo-Shum Burt Shiu
-
Patent number: 7637662Abstract: A rolling guide unit as provided here is capable of raising the degree of flexibility in design and simplifying the control of lubricating oil and has a low sliding resistance to the rolling elements. The rolling guide unit is provided with a cylindrical member 2 through which a rail 1 passes for it to slide on, raceway paths a constituted of a combination of the cylindrical member 2 and the rail 1, circuit paths b formed in the cylindrical member 2 and each making interconnection between the two ends of each of the raceway paths a by way of direction-changing recesses 18, and a plurality of rolling elements 19 placed in the circuit paths b and the raceway paths a. The rolling elements 19 circulate in the circuit paths b and the raceway paths a in accordance with the relative movement between the rail 1 and the cylindrical member 2.Type: GrantFiled: July 29, 2005Date of Patent: December 29, 2009Assignee: Nippon Thompson Co., Ltd.Inventors: Masataka Kato, Norimasa Agari
-
Patent number: 7631572Abstract: In a ball circulating groove structure of a ball nut, a deflector is provided with an inner collar extending along a penetrating direction of a hole of the ball nut and engaging with the ball nut in a side of an inner surface of the ball nut, and an outer collar engaging with the ball nut in a side of an outer surface of the ball nut.Type: GrantFiled: June 12, 2007Date of Patent: December 15, 2009Assignee: Showa CorporationInventors: Hiroshi Fujita, Shinobu Saito, Shinichi Sakaida, Koji Maejima
-
Patent number: 7632018Abstract: A synchronous chain for a liner guideway moved in the guideway by cooperating with rolling elements, which is characterized in that: both ends of the chain are connected to a head portion and a tail portion respectively, furthermore, the head portion and the tail portion are interconnected in a staggered manner, a moving space is predetermined in the radial part of head portion and the tail portion, in addition, a shape formed by the interconnection of the head portion and the tail portion is a sphere. In such way, the synchronous chain not only can avoid the interference during circulation, also the sphere formed by the interconnection of the head portion and the tail portion has the guiding effect, and can absorb the size variation by cooperating with the radial degree of freedom, furthermore, it is convenient for mass production and assembly.Type: GrantFiled: March 8, 2007Date of Patent: December 15, 2009Assignee: Hiwin Technologies Corp.Inventors: Hsin-Liang Chen, Hsin-Tsun Hsu
-
Patent number: 7611285Abstract: A linear ball bearing having a guide carriage (2) which is guided on a guide rail (1) in a longitudinally displaceable manner and is mounted in rolling contact on longitudinal sides of the guide rail (1) via balls (3) which are arranged on each longitudinal side in at least two parallel ball rows (4, 5) encircling in endless ball channels (6), each ball (3) of the one ball row (5) together with an adjacent ball (3) of the other ball row (4) being held all round in cage pockets (8) of a common cage piece (7), the cage piece (7) having exactly two cage pockets (8) for one ball (3) each from both ball rows (4, 5), each cage piece (7), as viewed in the running direction of the balls (3), being provided at both ends with convexly curved end surfaces (9) for contact with the end surfaces (9) of adjacent cage pieces (7), which end surfaces (9) extend essentially up to the cage piece sides (10).Type: GrantFiled: March 26, 2004Date of Patent: November 3, 2009Assignee: INA-Schaeffler KGInventors: Dietmar Rudy, Ralf Moseberg, Michael Heid, Patrick Daniel, Wolfgang Bauer
-
Publication number: 20090268994Abstract: In order to omit jostling caused between the adjacent rolling elements, a clearance is formed therebetween in a load region. A transfer path has a region that allows the rolling elements to contact only one of the transfer grooves of the transfer path, or a region that has a friction force acting between one of the transfer grooves of the transfer path and the rolling elements being greater than the friction force acting between another one of the transfer grooves of the transfer path and the roiling elements. The one of the transfer grooves in the region has a cross sectional shape taken in a direction perpendicular to the direction, in which the rolling elements are transferred, which cross sectional shape allowing two point contact with the rolling elements; and the rolling apparatus further has a contact-angle changing path that has a contact angle with the rolling elements that is greater than the contact angle of the other portion of the transfer path.Type: ApplicationFiled: November 24, 2006Publication date: October 29, 2009Applicant: COO SPACE CO., LTD.Inventor: Sosuke Kawashima
-
Patent number: 7594756Abstract: A rolling member guiding structure installed in the circulation tunnel of a sliding block in a linear transmission mechanism. The guiding structure has a bar shaped part disposed along the inner wall of the circulation tunnel of the sliding block so as to form the inner cavity of the circulation tunnel into a predetermined guiding space thereby guiding the rolling members to circulate along the circulation tunnel heading to a predetermined direction. With this structure, the contact area between the rolling member and the circulation tunnel can be minimized so as to reduce the frictional resistance to the rolling member and smooth the operation of the linear transmission mechanism.Type: GrantFiled: November 8, 2004Date of Patent: September 29, 2009Assignee: Hiwin Technologies Corp.Inventors: Chin-Pei Wang, Hsing-Neng Chou
-
Publication number: 20090214143Abstract: Linear rolling bearing, having a guide carriage (1) which can be provided so as to be longitudinally movable on a guide rail (2) and in which rolling bodies (4) circulate in an endless rolling body channel (3) which has a load section (5) and a return section (6) and deflecting sections (7) which connect the load section (5) to the return section (6) in an endless fashion and which are in each case provided on a head piece (10) of the guide carriage (1) and have in each case one outer deflection (12) for the deflection of the rolling bodies (4), with the outer deflection (12) being formed from a plastic whose flexibility is specified by a quotient determined from the ratio of fracture strain to fracture stress, which quotient is greater than 0.15 in magnitude, with the fracture strain being specified in percent and the fracture stress being specified in megapascals.Type: ApplicationFiled: November 7, 2005Publication date: August 27, 2009Applicant: SCHAEFFLER KGInventor: Dietmar Rudy
-
Publication number: 20090116770Abstract: First shoulder portions are formed on the outer periphery of the shaft such that the first spline grooves of the shaft are interposed between the first shoulder portions adjacent to each other in a circumferential direction of the shaft. Second shoulder portions are formed on the inner periphery of the outer tube such that the second spline grooves of the outer tube are interposed between the second shoulder portions adjacent to each other in a circumferential direction of the outer tube. Main passages of spline-purpose ball circulation passages are formed as a result of forming the first and second shoulder portions. Clearance are formed respectively between the first shoulder portions and the spline-purpose balls and between the second shoulder portions and the spline-purpose balls in a rotational direction of the screw shaft and the spline-purpose outer tube.Type: ApplicationFiled: October 31, 2008Publication date: May 7, 2009Applicant: JTEKT CorporationInventors: Hajime Watanabe, Tomoyuki Aida
-
Publication number: 20090100949Abstract: A linear guide device (40) as a movement guiding device, comprising a track rail (41) as a track member and a moving block (43) as a moving means slidably installed on the track rail (4) through balls (42 . . . ) installed on the track rail as a large number of rolling elements. The track rail (41), the moving block (43), the balls (42), and the other members forming the linear guide device (40) are formed of a radiolucent material. The radiolucent material desirably adopts a material of 0.18 cm?1 or less in X-ray absorption coefficient. Furthermore, ceramic coating is desirably applied to those areas of the track rail (41) and the moving block (43) receiving a load from the balls (42) which include rolling surfaces for the rolling elements. As a result, the radiolucent type movement guiding device suitably usable without being limited by installation place even under a special environment can be provided by adopting such a structure as stated above.Type: ApplicationFiled: July 25, 2006Publication date: April 23, 2009Applicant: THK CO., LTD.Inventors: Takeki Shirai, Takayoshi Shimotsuchi, Hiroshi Yamamoto
-
Patent number: 7513687Abstract: In a linear rolling bearing comprising a guide rail (1) and a guide carriage (2) that partially surrounds the guide rail (1) and is supported for sliding through rolling elements (3) on two long sides of the guide rail (1), the rolling elements (3) being arranged on each of the two long sides in at least two parallel, endlessly re-circulating rows (4, 5) of rolling elements (3) while a spacer (6) is inserted between every two successive rolling elements (3) of a row (4, 5), on each long side of the guide rail (1), a common spacer (7) for both rows (4, 5) is inserted between every two adjacent rolling elements (3) of the one row (4) and between every two adjacent rolling elements (3) of the other row (5).Type: GrantFiled: July 18, 2007Date of Patent: April 7, 2009Assignee: Ina-Schaeffler KGInventors: Peter Keller, Peter Heipt, Dietmar Rudy, Thomas Winkler, Ralf Moseberg, Michael Heid
-
Publication number: 20090074335Abstract: A slider for a linear motion rolling guide unit can ensure a smooth rolling movement and a reliable lubricating capability and eliminate the need for accurate dimension control to reduce the manufacturing costs. A turning corner 9 in an end cap 2 is made up of a pair of arced paths 9c connecting with a rolling path in the casing 1, and a straight path 9d providing a connection between the arced paths 9c and extending in a direction approximately perpendicular to the rolling path. The lubricating member A mounted in the end cap 2 has a lubricating face 18a exposed to the linear path 9d, and maintains a relation of the lubricating face 18a intersecting the outer peripheral faces of the arced paths 9c. A recessed area 19 is formed between the outer peripheral face of each arced path and the lubricating face 18a in a surplus length region extending outward from the intersection between the lubricating face 18a and the outer peripheral face of the arced path 9c.Type: ApplicationFiled: September 17, 2008Publication date: March 19, 2009Applicant: Nippon Thompson Co., Ltd.Inventor: Hideki Kuwabara
-
Publication number: 20090028473Abstract: A combined motion control and brake apparatus and method includes a linear longitudinal rail, a bearing block supported on the linear longitudinal rail, a linear rail brake fixed to the linear longitudinal rail, a carrier connected to the rail brake and supported by the bearing block, a pair of linear cross slide rails fixed on the carrier, the cross slide rails disposed generally at right angles to the longitudinal rail, a cross slide bearing block mounted on each cross slide rail, a cross slide supported on the cross slide bearing block moveable in both longitudinal and lateral directions, relative to the longitudinal rails, the cross slide including an engagement feature, and an engager operable to engage the engagement feature to release the rail brake and to move the cross slide rail.Type: ApplicationFiled: July 22, 2008Publication date: January 29, 2009Inventor: James B. Toeniskoetter
-
Patent number: 7467894Abstract: A linear motion guide apparatus includes a housing having a chamber formed by two side walls for slidably receiving an elongated track rail, one or more endless ball rolling passages are formed in the housing for receiving a number of bearing members, one or more ball retaining devices each include an elongated rod for engaging with the bearing members and for retaining the bearing members to the housing, and a fastening device for fastening the ball retaining device to the housing and to prevent the ball retaining device and the bearing members from being disengaged from the housing. A fastener may be used for fastening each of the end portions of the ball retaining device to the housing.Type: GrantFiled: May 15, 2006Date of Patent: December 23, 2008Assignee: Hiwin Technologies Corp.Inventors: Chin Pei Wang, Chiung Hui Tsai
-
Patent number: 7467895Abstract: A separator for use in a linear guide apparatus including a guide rail, a slider, and a plurality of rollers which circulate along an endless circulation passage provided in the guide rail and the slider and having guide grooves. The separator includes a separator body interposed between the rollers and having a pair of roller contact surfaces respectively opposing outer peripheral surfaces of the adjacent rollers, and a pair of arm portions which are guided by the guide grooves. A surface of each of the arm portions opposing the guide groove is formed such that an opposition distance with respect to the guide groove becomes wider from a fixed end side of the arm portion toward a free end thereof.Type: GrantFiled: February 13, 2006Date of Patent: December 23, 2008Assignee: NSK Ltd.Inventors: Nobuhide Kurachi, Masaru Akiyama, Soichiro Kato, Jun Matsumoto
-
Patent number: 7465092Abstract: A ball chain comprises a sequence of balls and an longitudinally elongated spacing chain having a sequence of holes thereon for receiving the balls. The spacing chain further includes a sequence of spacers interposed between the balls whereby the balls will be separated to each other, at least two longitudinally extended flexible strip and a plurality of transverse flexible connecting beam whose two ends respectively are connected to the longitudinal flexible strip, whereby the spacers attach to said connecting beam through an elastic member. The spacers can accordingly deflect and twist freely and the transverse flexible connecting beam can keep as long as possible and provide the best flexibility for being bent in various directions. Therefore, the ball chain can run in a three-dimensionally direction-chain recirculation channel smoothly and with low resistance.Type: GrantFiled: January 30, 2006Date of Patent: December 16, 2008Assignee: Chieftech Precision Co., Ltd.Inventors: Ming-Che Hsu, Lih-Fen Chen
-
Publication number: 20080279335Abstract: A bearing assembly mounted in an x-ray tube includes a bearing race and a plurality of bearing balls positioned adjacent to the bearing race. The plurality of bearing balls are positioned within a bearing cage. The bearing cage is configured to evenly space the bearing balls within the bearing cage and prevent contact between adjacent bearing balls, thereby eliminating the problems of skidding wear and dynamic impact load between adjacent bearing balls in the bearing assembly.Type: ApplicationFiled: May 11, 2007Publication date: November 13, 2008Inventors: Liangheng Qiu, Myles Standish Peterson, II, Carey Shawn Rogers, Dalong Zhong
-
Patent number: 7441956Abstract: A linear guide/feed module has a tubular boom movable along a movement axis, a housing encompassing the tubular boom so that the boom is travelable out of and into the housing along the movement axis, a drive unit for driving the boom to move in relation to the housing, at least two recirculating rolling element rows supporting the boom in the housing for its movement in relation to the housing along the movement axis and spaced apart from each other in a circumference direction around the movement axis, with each of the recirculating rolling element rows having a force-loaded rolling element carrying segment extending essentially in a direction of the movement axis and an essentially unloaded rolling element return segment, and a guide body encompassing the boom at least in segments in the circumferential direction, provided in the housing and having rolling element passages of the rolling element return segments formed into it as well as raceways on a housing side of the rolling element carrying segments ofType: GrantFiled: October 24, 2005Date of Patent: October 28, 2008Assignee: Rexroth Star GmbHInventors: Berthold Koeniger, Gerd Spatschek, Josef Dirschbacher
-
Publication number: 20080219604Abstract: A synchronous chain for a liner guideway moved in the guideway by cooperating with rolling elements, which is characterized in that: both ends of the chain are connected to a head portion and a tail portion respectively, furthermore, the head portion and the tail portion are interconnected in a staggered manner, a moving space is predetermined in the radial part of head portion and the tail portion, in addition, a shape formed by the interconnection of the head portion and the tail portion is a sphere. In such way, the synchronous chain not only can avoid the interference during circulation, also the sphere formed by the interconnection of the head portion and the tail portion has the guiding effect, and can absorb the size variation by cooperating with the radial degree of freedom, furthermore, it is convenient for mass production and assembly.Type: ApplicationFiled: March 8, 2007Publication date: September 11, 2008Inventors: Hsin-Liang CHEN, Hsin-Tsun Hsu
-
Patent number: 7410301Abstract: This mounting system features a base displaced from a mounting plate which is used to anchor a base mounted receiver releasably. The base has a pair of flexible arms to engage the receiver in channels that have a catch edge at the ends of the channels. The base is constructed with at least one stabilizer element and the receiver has an appropriate alignment slot. Each mounting plate, on both the base and receiver, have a plurality of apertures to facilitate attachment to fabric or a fabric patch or a fabric envelope which thereby allows attachment to different fabric devices together in a releasable yet secure manner. Those devices are to be from the following group, non-exclusive; backpack, jacket, hunting jacket, binocular case, knife case, compass case, first aid case, ammunition pouch, animal call case, web gear, etc.Type: GrantFiled: December 20, 2004Date of Patent: August 12, 2008Assignee: Ina-Schaeffler KGInventors: Martin Menges, Thomas Elicker
-
Patent number: 7401978Abstract: A linear guiding device where noise characteristics are improved by reducing traveling noise and operability of a slider body is smoothed, and where movement braking can be improved by reducing rolling body passage vibration. Crowning 24 with a curved surface having a predetermined curvature radius R is provided on an end section of a rolling body raceway groove 11 of a bearing block 24. A crowning amount C of the crowning 24 is set to a value C>Hmax greater that the value of a maximum elastic deformation amount Hmax of a rolling body B elastically deformed in a rolling body rolling path 14 by a preload or an external load. By this, even when a large load acts on a bearing block 2A or a large installation error occurs by skewing etc., the rolling body B smoothly rolls without an elastic deformation amount of the rolling body B rolling on the end section side of the rolling body raceway groove 11 becoming greater than the crowning amount C.Type: GrantFiled: August 24, 2004Date of Patent: July 22, 2008Assignees: NSK Ltd., NSK Precision Co., Ltd.Inventors: Kenta Nakano, Ryoichi Sato, Hiroki Yamaguchi
-
Patent number: 7393139Abstract: A linear guide unit comprising a guide carriage (3) that is mounted through rolling elements (2) for sliding on a guide rail (1), said guide carriage (3) comprising a carrier body (4) and end caps (5) arranged on front ends of the carrier body (4), the linear guide unit comprising at least one endless rolling element channel (6) comprising a load-bearing channel (7) for load-bearing rolling elements (2), a return channel (8) for returning rolling elements (2) and two deflecting channels (9) that connect the load-bearing channel (7) and the return channel (8) endlessly to each other and are defined by the end caps (5), a support rail (10) arranged along the load-bearing channel (7) and supported on the carrier body (4) comprising a raceway (16) for the rolling elements (2) that defines the load-bearing channel (7) the support rail (10) comprising a support member (11) and a saddle member (12), the support member (11) being received on the carrier body (4), and the saddle member (12) comprising the raceway (16)Type: GrantFiled: October 15, 2003Date of Patent: July 1, 2008Assignee: Ina-Schaeffler KGInventors: Ralf Moseberg, Dietmar Rudy, Michael Heid, Henning Dombek
-
Patent number: 7377693Abstract: A steel wire retainer for a sliding block comprises a plurality of steel wire retaining members, each of which includes a locking section on the sliding block and a plurality of steel wire retaining members. The steel wire retaining members each has a hook formed on the retaining portion thereof for hooking the locking section of the sliding block. The restraining portion of the respective steel wire retaining members will cooperate with the rolling grooves of the sliding block to form a ball rolling path, and the restraining portion of the respective steel wire retaining members is formed with a plurality of reinforced folding portions. The simple, low cost and easily assembled steel wire retaining members have sufficient support strength and are suitable for various sized sliding blocks and can make the linear transmission apparatus operate stably.Type: GrantFiled: February 24, 2006Date of Patent: May 27, 2008Assignee: Hiwin Technologies Corp.Inventors: Chiung-Hui Tsai, En-Chieh Chen
-
Patent number: 7374339Abstract: A seal device fixed to an end portion of a slider of a guide device includes: a casing; a plurality of seal members; and elastic members, wherein each seal member has a recess portion in which a rail penetrates. An inner circumferential face of the recess portion comes into contact with an outer surface of the rail when the seal member is pushed onto one side of the rail by the elastic members. The plurality of seal members are arranged in the casing in such a manner that when a seal portion of one seal member is pushed by the elastic member and contacted with one side of the rail, a seal portion of the next seal member is pushed by the elastic member and contacted with the other side of the rail.Type: GrantFiled: February 9, 2005Date of Patent: May 20, 2008Assignee: THK Co., Ltd.Inventors: Hiroaki Mochizuki, Tetsuhiro Nishide
-
Patent number: 7329047Abstract: A motion guide device is provided with a rolling member connection belt for holding a series of rolling members which circulate in a circulation passage provided with a loaded rolling passage, a non-loaded return passage and a pair of rolling direction changing members connecting the loaded rolling passage and the non-loaded return passage to thereby constitute the circulation passage. The rolling member connection belt is formed from a metal plate member having a corrugated-shape, in section in a longitudinal direction thereof, formed at least to one portion thereof or entire portion thereof in the longitudinal direction, and the corrugated-shape has peak and valley portions each extending in a direction normal to the longitudinal direction of the metal plate member.Type: GrantFiled: February 9, 2004Date of Patent: February 12, 2008Assignee: THK Co., Ltd.Inventor: Hidekazu Michioka
-
Patent number: 7320546Abstract: A rolling guide apparatus is provided which is reduced in size and weight, and which includes a track rail of a flexible structure of course having a function of absorbing an impact load and capable of automatically adjusting an error between mounting surfaces of the track rail and a movable block. The apparatus includes a track rail 10 with projected portions 12 projecting to the left and right, a movable block 30 having at least four sets of endlessly circulating roller rows 20 built therein which are in rolling contact with upper and lower surfaces of the left and right projected portions 12 of the track rail 10.Type: GrantFiled: July 15, 2003Date of Patent: January 22, 2008Inventor: Hiroshi Teramachi
-
Patent number: 7303335Abstract: A linear-motion device has: a slider provided onto a guide rail relatively movably; and a plurality of rolling elements for causing the slider to move relatively in a longitudinal direction of the guide rail; whereby the slider comprising a slider block having rolling-element rolling grooves that oppose to rolling-element rolling grooves formed on the guide rail, and end caps that close both-end openings of the rolling-element rolling paths formed between the rolling-element rolling grooves on the slider block and the rolling-element rolling grooves on the guide rail, and rolling-element return paths for returning the rolling elements, which have rolled in the rolling-element rolling paths, are formed on the slider block, wherein the rolling-element return paths comprises a groove portion formed on an outer surface of the slider block along the longitudinal direction of the guide rail, and a cover member for covering the groove portion.Type: GrantFiled: December 12, 2002Date of Patent: December 4, 2007Assignee: NSK Ltd.Inventors: Soichiro Kato, Takumi Nakagawa, Naoki Inokai, Kazuo Kanazawa
-
Patent number: 7300208Abstract: A guide rail (12) of a linear guide unit (10) is provided with at least one running rail (16), which has at least two races (16a) that have different load transmission directions. According to the present invention, the running rail (16) is attached to the guide rail (12) by means of roller insertion; in the surface sections (12a) associated with the races (16a) of the running rail (16), the guide rail (12) is provided with a plurality supporting ribs (12a1); and the supporting ribs (12a1) associated with one and the same race (16a) are aligned essentially parallel to the load transmission direction (B) of this race (16a). In addition or alternatively, in a section (12d) that is not intrinsically deformed by the roller insertion of the at least one running rail (16), the guide rail (12) has at least one additional rolled section. The present invention also relates to a method for manufacturing guide rails of this kind (12).Type: GrantFiled: April 15, 2005Date of Patent: November 27, 2007Assignee: Rexroth Star GmbHInventors: Wolfgang Kuellstaedt, Richard Kuehnlein, Thomas Wahler, Roland Greubel, German Duetsch, Werner Keller, Stefan Dorn, Steven Worcester, Werner Blaurock