Abstract: The present invention provides a ball roller rolling member which can take crossing arrangement, conveyance including alignment and separation can be easily automated, lateral both sides of a rolling curved portion can be easily discriminated and the rolling curved portion thereof can be precisely ground. Such ball roller rolling member comprises a rolling curved portion having a circular-arc outer periphery and end spherical portions provided on both sides of the rolling curved portion so as to be spherically swelled outward, respectively, the rolling curved portion having a radius of the circular-arc portion larger than a radius of curvature of each of the end spherical portions.

Abstract: Elastic support units are provided to at least one of upper and lower track rails of a seismic isolation guide. The elastic support units include two elastic supporters that are superposed one over the other in a vertical direction, Each elastic support unit includes an elastically deformable bed plate, two mutually parallel side portions, and side wall portions extending between each of the two parallel side portions and the bed plate raising a lower surface of the bed plate a prescribed height above lower surfaces of the side portions and creating a space between the side wall portions. The elastic supporters are arranged in a vertically opposite relation with respect to each other positioning the respective bed plates at vertically opposite ends with the respective side wall portions being disposed orthogonal to each other. The track rails are secured to the bed plates parallel to the side wall portions.

Abstract: 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.

Abstract: The present invention provides a ball roller rolling member which can take crossing arrangement, conveyance including alignment and separation can be easily automated, lateral both sides of a rolling spherical portion can be easily discriminated and the rolling spherical portion thereof can be precisely ground. Such ball roller rolling member comprises a rolling spherical portion having a circular-arc outer periphery and end spherical portions provided on both sides of the rolling spherical portion so as to be spherically swelled outward, respectively, the rolling spherical portion having a radius of the circular-arc portion larger than a radius of curvature of each of the end spherical portions.

Abstract: The ball roller according to the present invention has a unique shape so that it can be handled just as easily as a conventional ball while being endurable against high load as is a roller. The ball roller comprises a rolling portion having an arcuate surface, and two spherical end portions spherically protruding from both ends of the rolling portion. The rolling portion has a radius of curvature larger than that of each of the spherical end portions, curvature centers of the spherical end portions are located on the rotational axis of the rolling portion. In another embodiment of the present invention, a ratio between the maximum diameter d of the rolling portion and the distance W between the two apexes of the spherical end portions falls within a rage of approximately 80%±17%.

Abstract: An elastic supporter, an elastic support unit, and a seismic support unit using the same with a high ability to absorb vertical impacts applied to a seismic isolation guide are provided. The seismic isolation guide 10 includes two sets of upper and lower rolling guide parts 10A, 10B each having track rails 20A, 20B and movable blocks 30A, 30B incorporating therein a plurality of rows of endlessly circulating rolling members 40A, 40B which are in rolling contact with the track rails 20A, 20B, respectively. The two sets of rolling guide parts 10A, 10B are arranged in a vertically opposite relation with respect to each other so as to place the respective track rails 20A, 20B at vertically opposite ends, respectively. The respective track rails 20A, 20B are arranged orthogonal to each other, and the respective movable blocks 10A, 10B are integrally fixed to each other.

Abstract: 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.

Abstract: A linear roller guide device in which the rollers smoothly circulate by integrally molding at least one member of the roller returning passage, the roller end surface guide wall and the direction changing portion with the block body. The roller returning passage and the direction changing passage inner periphery guide portion are provided with a roller chain guide portion for guiding a track of the roller chain onto a predetermined track. At least one of the roller returning passage forming member for forming the roller returning passage and the direction changing passage inner periphery portion forming member for forming the direction changing passage inner periphery portion is integrally molded by inserting the block body into a molding die.

Abstract: The ball roller according to the present invention has a unique shape so that it can be handled just as easily as a conventional ball while being endurable against high load as is a roller. The ball roller comprises a spherical rolling portion with an arched surface, and two spherical end portions spherically protruding from both ends of the spherical rolling portion. The spherical rolling portion has a radius of curvature larger than that of each of the spherical end portions, curvature centers of the spherical end portions are located on the rotational axis of the spherical rolling portion. In another embodiment of the present invention, a ratio between the maximum diameter d of the spherical portion 2 and the distance W between the two apexes of the spherical end portions falls within a rage of approximately 80%±17%.

Abstract: A cross roller assembly suitable for use with rollers disposed in a cross roller arrangement is provided for the purpose of preventing the rollers from skewing as much as possible to thereby guide them in a stable manner. The cross roller assembly (21) includes first and second rollers (8, 9), and a retainer (22) for holding the first and second rollers (8, 9) in respective alignment with their axes of rotation alternatively arranged at right angles with respect to each other. The retainer (22) has a pair of end holders (23) for supporting the opposite ends of each roller. Each of the end holders (23) has an outer surface which is formed of a flat guide surface so as to regulate or restrict each roller to its suitable posture.

Abstract: A rolling member is utilized for such as a rolling bearing and the rolling members are disposed to be rollable between members which are relatively movable with respect to each other. The rolling member is provided with a rolling portion contacting the movable members during the rolling motion thereof and longitudinal both end portions. The rolling portion is formed to provide a protruded circular arc shape and the end portions are formed so as to provide a spherical shape, the circular rolling portion has a radius of curvature larger than a radius of each of the end spherical portions, and a distance between the end spherical portions is larger than a maximum diameter of the circular rolling portion.

Abstract: A roller guide apparatus comprises: a track rail comprising a rail body extending in a longitudinal direction thereof and having a section in a width direction thereof in shape of circular arc protruding downward in an installed state and a base portion supporting a lower surface of central portion of the rail body in the width direction thereof, the rail body having an upper surface and lower surfaces extended in the width direction from the base portion, the upper and lower surfaces of the rail body having concentric circular arc shapes; a movable block body comprising a block body arranged so as to straddle the rail body and having a lower surface, in an assembled state, opposing to the upper surface of the rail body, a pair of bilateral leg portions extending downward from bilateral end portions of the block body with the track rail being interposed therebetween, a pair of support piece portions extending towards the track rail so as to oppose to the extended portions of the rail body; at least one barrel

Abstract: A roller guiding apparatus for use in linear guiding portions of a variety of kinds of industrial machines such as machine tools and the like is provided for guiding rollers which rollingly travel along a pair of opposed roller-rolling surfaces formed on a traveling rail and a movable body so as to move the movable body along the traveling rail. The apparatus employs barrel-shaped rollers which are suitable for supporting heavy loads and have excellent self-aligning ability and vibration-damping capability. To this end, the barrel-shaped rollers (4) each have a pair of arc-shaped portions (4a, 4b) which gradually decrease in their diameter from a center thereof toward opposite ends thereof.

Abstract: A first invention of the subject application aims to smoothly circulate the rollers by integrally molding at least one member of the roller returning passage, the roller end surface guide wall and the direction changing portion with the block body.

Abstract: A guide rail (21) has an upper surface (26) with a pair of upper rolling paths (23) and side surfaces (70) with a pair of side rolling paths (24). The upper rolling paths (23) are concave surfaces inclined downward toward a longitudinal middle portion with respect to width of the guide rail (21) and extending along arcs of a circle. A moving block (22), provided with a groove (39) receiving the guide rail (21) therein, is mounted on the guide rail (21) so as to straddle the rail. A plurality of upper rollers (35) are supported in rows on the moving block (22) so as to roll along the upper rolling paths (23). The upper rollers (35) each has a convex side surface (35a). A plurality of side rollers (36) are supported in rows on the moving block (22) so as to roll along the side rolling paths (24). Even if a lateral force acts on the moving block due to a positional error in the guide rail, the rollers are able to roll smoothly and the smooth traveling of the moving block is insured.

Abstract: The linear movement guide apparatus according to the invention has features that two rows of ball rolling grooves are formed on an upper surface of a tracking base and one or two rows of ball rolling grooves are formed on both side surfaces thereof, respectively, on a concave portion of a sliding base are provided corresponding ball rolling grooves so as to face to the ball rolling grooves formed on the tracking base; the depth of each ball rolling groove about ½ of the diameter of balls to be held therein; and the distance between the ball rolling grooves formed on the upper surface of the tracking base and the distance between said ball rolling grooves and the ball rolling grooves formed on side surfaces are varied with respect to the distances between the corresponding ball rolling grooves formed on the sliding base.

Abstract: A first invention of the subject application aims to smoothly circulate the rollers by integrally molding at least one member of the roller returning passage, the roller end surface guide wall and the direction changing portion with the block body. Namely, at least one member of the roller returning passage forming member 91 for forming the roller returning passage 9, the roller end surface guide wall 13 and the direction changing passage inner periphery portion forming member 12 for forming the direction changing passage inner periphery portion 10b is integrally molded by inserting the block body into a molding die. A second invention of the subject application aims to realize a smooth circulation and movement of the rollers, and to prevent the running-out of the roller chain during the circulation of the roller.

Abstract: An object of this invention is to provide a linear motion guide device and a table guide device having an automatic controllability and to realize a load bearing structure having a high rigidity. The device is characterized in that a movable block (4) is formed to provide an L-shape in section, rolling ball rows (B1-B4) are disposed to be rollable between ball rolling grooves formed to an upper surface of a track rail (1) and a horizontal portion of the movable block (4) and between ball rolling grooves formed to a side surface of the track rail (1) and a suspending portion (3), wherein each of the ball rolling grooves has a circular-arc-shape in section having a deep-groove shape having a groove depth of approximately ⅓ to ½ of a diameter of the rolling ball.

Abstract: A roller train for enabling a slider to be freely guided along a track rail and to a linear motion guide apparatus employing this roller train that is used in machine tools, industrial robots, precision instruments, and the like provides a roller train capable of substantially preventing skew in the rollers that can prevent the rollers from circulating smoothly. A linear motion guide apparatus that employs this roller train enables the slider to move smoothly. The roller train 13a includes a plurality of rollers 14a and a retaining member 15. The retaining member 15, constructed of a slick synthetic resin material, is provided with roller retaining holes 19 to retain the plurality of rollers 14a in a series. In particular, side plates 20 for covering both end faces of the 14a are provided on the portions of the retaining member 15 that oppose both end faces of the 14a contained in the roller retaining holes 19. The side plates 20 prevent skew in the rollers 14a, enabling the same to roll smoothly.

Abstract: The present invention relates to a method of manufacture of a slider of a rectilinear guide unit for guiding a movable body such as a work table of a machine tool, an industrial robot or the like by moving along an orbital rail arranged on a stationary section such as a bed, column or the like as it bears a load thereon. This method comprises a first step in which a metallic block main body as a core of the slider is machined to a predetermined shape and to form ball load rolling contact surfaces in the block main body and a second step in which the block main body machined in the previous step is inserted into a mold so as to allow a die-molding material to be padded thereon to thereby form an endless ball circulation path wherein in the first step, chamfered sections are formed on the corners of the block main body corresponding to a portion where the above-mentioned endless ball circulation path is formed.