With Safety Device Or Drive Disconnect Patents (Class 74/814)
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Publication number: 20140090517Abstract: The present invention provides a safety device for a rotating feed rod, the safety device preventing the abnormal rotation of the rotating feed rod and being provided with: a rotating member (102, 202) which is provided in any rotating shaft (50, 80) of a power transmission mechanism of the rotating feed rod and in which a plurality of openings (102a, 202a) are formed in the circumferential direction thereof; and at least two plunger pins (104, 106: 204, 206) which are disposed apart from each other in the circumferential direction of the rotating member in a housing (54, 62) of the rotating feed rod and provided to be movable forward and backward so as to be accepted in the openings of the rotating member. Even when the rotating shaft is indexed at an arbitrarily defined rotational position, at least one plunger pin among the plunger pins is accepted in the opening.Type: ApplicationFiled: May 20, 2011Publication date: April 3, 2014Applicant: MAKINO MILLING MACHINE CO., LTD.Inventors: Toshihiro Suzuki, Shinji Terakawa
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Patent number: 8297171Abstract: Improvements in a torque limiter that uses a plurality of ball bearings that are retained in a cage. The ball bearings are compressed to create frictional drag on opposing flat plate surfaces. In some military vehicles the gun turret is rotated by personnel turning a crank that rotates the turret. The crank rotates a pinion or chain that turns the rack of the turret. When the turret does not move freely the personnel will typically apply more force that results in damaging the pinion, chain and or the rack. The torque limiter for a gun turret in this application connects between the crank and the drive train to allow the crank to turn without applying excessive torque forces on the pinion, chain and or the rack.Type: GrantFiled: August 9, 2010Date of Patent: October 30, 2012Inventors: Ben Gagnon, Thomas Gagnon
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Patent number: 7971328Abstract: A sealing arrangement (41) sealing the inside (15) of the tool disk (3) in relation to the outer side on the respective tool station is provided on each drive part (25) in a tool revolver. The tool driver a base body (1) applied or to be applied to the tool machine and defining a revolver axis (7) about which a tool disk (3) is rotationally mounted on the base body (1). The tool disk has a plurality of tool stations (17) distributed on its periphery and adjustable by rotating to tool disk (3) in respectively at least one working position. A tool drive (19) located in the inside of the tool disk (3) and applied to the base body (1) is coupled to the drive-sided coupling part (23). The coupling part includes a tool-sided coupling part for the drive of a tool located on the tool station (17) oriented towards the work station.Type: GrantFiled: April 21, 2006Date of Patent: July 5, 2011Assignee: Sauter Feinmechanik GmbHInventors: Detlef Sahm, Dietmar Linder, Jochen Dieringer
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Publication number: 20110146446Abstract: An actuator (100) includes a differential (105), the differential comprising a gear train comprising a first leg (106a) and a second leg (106b); a motor (101) configured to power a rotating ball screw (104) through the first leg (106a) of the differential (105); and a brake (103) connected to the second leg (106b) of the differential (105), the brake (103) having a holding force, such that in the event a torque in the differential (105) exceeds the holding force, the brake (103) is configured to dissipate the torque in the differential (105).Type: ApplicationFiled: December 17, 2009Publication date: June 23, 2011Applicant: HAMILTON SUNDSTRAND CORPORATIONInventors: Richard A. Himmelmann, David Lang
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Publication number: 20090134350Abstract: A shaft drive arrangement including a drive member (402), a driven shaft (100); a disengageable drive mechanism, (202, 204, 302), adapted to connect the shaft and drive member, the mechanism including one or more engagement recesses (304) and one or more engagement members (202, 204), each engagement member being adapted to cooperate with an engagement recess; and a disengagement member (312) adapted to disengage the or each engagement member from the engagement recess with which it is engaged.Type: ApplicationFiled: January 30, 2007Publication date: May 28, 2009Inventor: David John Ammunson
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Patent number: 7286895Abstract: A safety device for a machine has a first machine part for carrying out a working movement towards a second machine part. It also has at least a first and a second optical barrier moving along with the first machine part during the working movement. The first optical barrier runs ahead of the first machine part by a first distance, and the second optical barrier is arranged at a second distance from the first optical barrier. A control unit is designed to stop the working movement of the first machine part when the first optical barrier is interrupted. A test unit allows to test whether the second optical barrier has been interrupted once the first machine part has been stopped. A blocking unit serves for blocking the working movement as a function of the test result from the test unit. Using this safety device it is possible to determine an overtravel of the first machine part in a simple and reliable manner.Type: GrantFiled: November 18, 2005Date of Patent: October 23, 2007Assignee: Pilz GmbH & Co. KGInventor: Martin Krieg
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Patent number: 7213316Abstract: A machine tool is provided with: a rotating table apparatus that has a table for holding a workpiece, and that rotates the table based on a drive force that has been input; a processing area for processing the workpiece, the rotating table apparatus being carried into and out from the processing area; and a drive source for inputting the drive force when connected to the rotating table apparatus, the drive source being provided in the processing area such that the drive source can be disconnected from the rotating table apparatus.Type: GrantFiled: April 13, 2005Date of Patent: May 8, 2007Assignee: Sankyo Seisakusho Co.Inventor: Heizaburo Kato
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Patent number: 7024740Abstract: A rotating table apparatus using a cam mechanism and having a higher precision than a conventional rotating table is realized. A rotating table apparatus having a driven shaft supported by a housing and driven by a driving device, and a rotating table which is rotatingly driven by said driven shaft using a cam and cam followers, wherein the rotating table apparatus has an opposing surface which opposes an end surface of the rotating table in a direction along a rotation shaft of said rotating table, and oil is intervened in between the opposing surface and said end surface.Type: GrantFiled: January 6, 2005Date of Patent: April 11, 2006Assignee: Sankyo Manufacturing Co., Ltd.Inventor: Heizaburo Kato
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Patent number: 6880440Abstract: A miter saw having a base and an arm that pivots toward the base is disclosed. A blade is supported by the arm, and is designed to cut workpieces resting on the base when the arm and blade pivot downward. The saw includes a detection system configured to detect one or more dangerous conditions between a person and the blade, such as when a person accidentally touches the spinning blade, and the saw includes a reaction system to stop the downward movement of the blade and arm when the dangerous condition is detected.Type: GrantFiled: January 16, 2002Date of Patent: April 19, 2005Assignee: SD3, LLCInventors: Stephen F. Gass, David A. Fanning
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Patent number: 6813983Abstract: A miter saw having a base and an arm that pivots toward the base is disclosed. A blade is supported by the arm, and is designed to cut workpieces resting on the base when the arm and blade pivot downward. The saw includes a detection system configured to detect one or more dangerous conditions between a person and the blade, such as when a person accidentally touches the spinning blade, and the saw includes a reaction system to urge the arm and blade away from the base when the dangerous condition is detected.Type: GrantFiled: January 16, 2002Date of Patent: November 9, 2004Assignee: SD3, LLCInventors: Stephen F. Gass, David A. Fanning
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Patent number: 6785943Abstract: An indexing tool turret assembly is disclosed including a rotatable indexable turret tooling plate having mounted thereon stationary as well as live tooling. A single drive motor is utilized in order to perform indexing as well as to drive the live tooling. A plurality of live tools can be simultaneously mounted on the turret tooling plate and the single drive motor is selectively engageable with each of the live tools so that only one of the plurality of live tools is driven at a given time. The selective live tool drive train includes an axially movable drive shaft and bevel drive gear for selectively engaging the driven bevel gear of the desired live tool. The axially movable shaft assembly includes a mechanism for adjusting the backlash between the driving and driven bevel gears when these gears are engaged with one another.Type: GrantFiled: September 2, 1999Date of Patent: September 7, 2004Assignee: Hardinge, Inc.Inventors: Terrence Sheehan, Stephen M. Wightman, Jacek Mierzejewski, Gary Comstock
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Patent number: 6385831Abstract: A workpiece table, provided for a machine tool, is movable back and forth between two end positions and has for this purpose a rotational drive which has a gear part joined to the workpiece table for rotation thereof, a toothed rack in engagement therewith, as well as a medium-actuated shift drive for displacement of the toothed rack, which thereby performs a linear stroke motion, delimited by stops, between two end locations corresponding to the end positions of the workpiece table. Provided on the workpiece table is a mechanism which acts upon the toothed rack with a higher feed force at the beginning of the linear stroke movement than during the remainder of the linear stroke.Type: GrantFiled: March 26, 1997Date of Patent: May 14, 2002Inventor: Peter Grund
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Publication number: 20010039706Abstract: An indexing tool turret assembly is disclosed including a rotatable indexable turret tooling plate having mounted thereon stationary as well as live tooling. A single drive motor is utilized in order to perform indexing as well as to drive the live tooling. A plurality of live tools can be simultaneously mounted on the turret tooling plate and the single drive motor is selectively engageable with each of the live tools so that only one of the plurality of live tools is driven at a given time. The selective live tool drive train includes an axially movable drive shaft and bevel drive gear for selectively engaging the driven bevel gear of the desired live tool. The axially movable shaft assembly includes a mechanism for adjusting the backlash between the driving and driven bevel gears when these gears are engaged with one another.Type: ApplicationFiled: September 2, 1999Publication date: November 15, 2001Applicant: sheehanInventors: TERRENCE SHEEHAN, STEPHEN M. WIGHTMAN, JACEK MIERZEJEWSKI, GARY COMSTOCK
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Patent number: 5918510Abstract: A rotary indexing apparatus includes a base, a table rotatably supported on the base, a drive unit for rotating the table, and a clamp ring fixed to the base to surround the table. Interference fit is established between the clamp ring and the table in order to clamp the table. There is also provided a mechanism for deflecting the clamp ring in order to unclamp the table.Type: GrantFiled: July 14, 1997Date of Patent: July 6, 1999Assignee: Toyoda Koki Kabushiki KaishaInventors: Satoru Uemura, Hidekazu Hirano
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Patent number: 5739660Abstract: Process and apparatus for preventing collisions between two machine components, of which at least a first machine component is displaceable by means of a drive along a straight track relative to the second machine component such that the two components can collide, wherein for the simple and reliable prevention of such collisions a sequence of pulses is generated during movement of at least one of the two components relative to the other component by means of signal generating devices associated with the two machine components, namely such that the distance and/or the length and/or the height of consecutive pulses follows a function of the distance of the two components from one another, measured in track direction, and wherein the drive is controlled as a function of this sequence of pulses.Type: GrantFiled: December 1, 1995Date of Patent: April 14, 1998Assignee: Index-Werke GmbH & Co. KG Hahn & TesskyInventor: Alfred Gnann
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Patent number: 5201249Abstract: A turntable for selectively accommodating different types of workpieces in which the system is designed for combining two turntables into one for handling two different workpieces which are rotated by two different motors. Preferably, one of the motors is connected to one of the tables for rotating the table continuously at a slow speed for treating large parts. The turntable is adapted to be selectively arranged for a second motor to drive a second table at incremental positions so as to index smaller parts for treatment. One drive shaft of the two motors is located within the other drive shaft which is hollow.Type: GrantFiled: February 25, 1992Date of Patent: April 13, 1993Assignee: Progressive Blasting SystemsInventor: Bruce A. Sterenberg
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Patent number: 4667789Abstract: A device for controlling in sequence or at the same time the feed of metal bars into a suitable guide equipment for supplying the bars to an automatic multi-spindle lathe is described.In order to connect the main control or drive to the bar feeding apparatus, the device includes a clutch, the coupling and decoupling of the clutch being caused by the rotation of the guide equipment. The portion of the clutch which is connected to the drive can rock around the axis of its support on the fixed frame during the coupling operation, and a return spring is provided to return rockable portion back to its starting position ready for the next coupling operation.Type: GrantFiled: February 28, 1985Date of Patent: May 26, 1987Assignee: F. LLI Cucchi S.r.l.Inventors: Giovanni Cucchi, Pietro Cucchi
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Patent number: 4587871Abstract: NC turret lathe comprising a tool turret rotatable about an indexing axis and mounted for rotation in a turret slide displaceable in a direction parallel to the indexing axis, also comprising a turret indexing drive monitored by a control mechanism for rotating the tool turret, and a slide drive monitored by a control mechanism for displacing the turret slide. In order to decrease the expenditure required to index the tool turret, the slide drive also constitutes the turret indexing drive, and the slide drive control also serves to monitor the turrent indexing drive. An actuatable coupling is provided between the slide drive and the turret to prevent undesired rotation of the turret when it is only to be slidably displaced.Type: GrantFiled: August 2, 1983Date of Patent: May 13, 1986Assignee: Index-Werke KG Hahn & TesskyInventor: Heinrich Lahm
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Patent number: 4562911Abstract: A drive shaft (1) rotatably journalled in a stationary block (2) has keyed thereto a driving member (5), while a driven member (6) is rotatably mounted on the shaft. The driving member imparts to the shaft a positive intermittent rotation, for example by steps of one revolution or an integer fraction of one revolution. Co-axially mounted on the shaft is a disc (8) having a periphery with at least one keyway (108) if the intermittent rotation of the shaft is by one-revolution steps. The keyway-recessed disc cooperates with a latch (9) which is slidably but not rotatably mounted on the driven member and which is parallel to the axis of the shaft. The latch has a pronged end (109) which, in the dwell position of the intermittent motion of the shaft, is aligned with the head (110) of a rod (10) that is slidably mounted in the stationary block parallel to the shaft and that is driven by a pneumatic cylinder (12).Type: GrantFiled: December 22, 1983Date of Patent: January 7, 1986Assignee: SASIB S.p.A.Inventors: Renato Manservisi, Sandro Corticelli
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Patent number: 4538717Abstract: The invention relates to a step drive assembly which includes a rotatable operating unit for operating a tool or knife or the like. The assembly has a change-over clutch for selectively connecting the operating unit to a continuously running motor or a brake. Control apparatus for the assembly includes a disk rotatable with the operating unit having teeth and spaces therebetween forming zones and a sensor unit for scanning the zones and outputting a pulse train. An evaluating circuit responsive to the pulse train outputs a positioned stop signal and an overload stop signal to effect a braking operation.Type: GrantFiled: February 4, 1983Date of Patent: September 3, 1985Assignee: Danfoss A/SInventors: Knud Blohm, Egon Krogh
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Patent number: 4088005Abstract: This disclosure includes a die for forming metal piece parts and includes two progressive die sections which partially form metal piece parts and transfer same to a rotary die section which nest the parts and rotates same through a series of work stations for finishing operations.Type: GrantFiled: May 31, 1977Date of Patent: May 9, 1978Assignee: Koller Die and Tool Co.Inventor: Frank Starr
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Patent number: 4064764Abstract: A trip device to prevent continued operation of a rotating machine upon the occurrence of an undesirable operating condition includes a sensing element to sense the occurrence of the undesirable operating condition. The trip device further includes an operating arm normally spaced from the sensing element. The sensing element moves into contact with the operating arm upon the occurrence of the undesirable operating condition. The device further includes a trigger to lock the operating arm in its normal operating position, with the sensing element moving the arm relative to the trigger upon the occurrence of the undesirable operating condition. The trigger thereafter acts as a stop to maintain the operating arm in a position spaced from the sensing element.Type: GrantFiled: May 4, 1976Date of Patent: December 27, 1977Assignee: Carrier CorporationInventors: George P. Schanzenbach, Jr., David M. Mizikar
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Patent number: 3981667Abstract: Takeout apparatus for a blow molding machine which includes a turret assembly having a plurality of article pickup heads which may be suction operable and telescopically mounted to facilitate clearing closely adjacent components during removal of the articles from the molds, turret assembly positioning means for swingably moving the assembly into and out of operative position adjacent the periphery of the path of movement of the molds and drive means for turning the assembly in synchronism with the blow molding machine which may include a clutch operative to cut off power to the turret shaft when the turret assembly is in inoperative position yet while the blow molding machine is operating. The pickup heads may be selectively associated with a positive pressure source to facilitate urging the removed articles onto a downstream conveyor.Type: GrantFiled: January 31, 1975Date of Patent: September 21, 1976Assignee: Monsanto CompanyInventor: Richard D. Bilodeau