Class 451/243 - With "dead" center

Subclass of Class 451 - Abrading
Definition: Abrading machine in which the workpiece is slidingly supported
No. of patents: 29
Last issue date: 05/06/2008

Number	Title	Issue Date
7367868	Centerless grinder A centerless grinder for grinding an elongated workpiece includes a grinding wheel having a working surface with a plurality of raised areas extending circumferentially around at least a portion of the working surface. A platform is provided having an elongated top ...	05/06/2008
7147542	Centerless grinder A centerless grinder for grinding an elongated workpiece includes a grinding wheel having a working surface with a plurality of raised areas extending circumferentially around at least a portion of the working surface. A platform is provided having an elongated top ...	12/12/2006
7137632	Force limiting workpiece holding device A force limiting workpiece holding device for holding a workpiece in a workpiece processing assembly having a spindle and a closer that applies a force, comprises a workpiece holder slidably mounted to the spindle. The workpiece holder includes a plurality of circum...	11/21/2006
6827631	Center support grinding method, center support grinding machine, and centering method for the centers thereof To provide a grinding machine and a centering method for the centers thereof in which the requisite space for the center support rotating mechanism for a workpiece and the in-feed mechanism is reduced to facilitate miniaturization and in which it is easy to secure t...	12/07/2004
6729938	Centerless grinding machine A centerless grinder 1 according to the present invention comprises a bed 108, a grinding wheel spindle stock 101, a regulating wheel spindle stock 102, a work rest 103, and the like. The grinding wheel spindle stock 101 and...	05/04/2004
6585573	Device for the tailstock end centering and clamping of a workpiece with a circular-cylindrical end The device according to the invention for the tailstock end centering and clamping of a rotational workpiece with a circular-cylindrical end comprises a housing with a shank for accommodation in a tailstock barrel, and a chucking pot with a collet located...	07/01/2003
6569000	Grinding machine for centerless grinding of workpieces A grinding machine for centerless grinding of workpieces is provided. The workpieces are disposed on a support in the area of a longitudinal plane of the grinding machine. A first slide is provided for a grinding wheel and positioned laterally relative to...	05/27/2003
6506103	ELID centerless grinding apparatus An ELID centerless grinding apparatus comprising: a blade 2 for horizontally supporting a rotator workpiece 1 and and a regulating wheel 10 driven to rotate around a horizontal shaft center. An outer surface of the workpiece is subjected to ELID grinding ...	01/14/2003
6312314	Guidewire position locator A guidewire position locator and a centerless grinder assembly including a guidewire position locator are disclosed. The guidewire position locator includes a plurality of optical sensors closely arranged to accurately detect the position of an elongate w...	11/06/2001
6193591	Loading system and collect assembly for grinding a workpiece An assembly for holding a cylindrical workpiece for grinding, including a support frame having at least one support arm extending to initially hold the workpiece and operable to disengage from the workpiece during grinding, a tailstock slidably mounted on...	02/27/2001
6176766	Centerless grinding fixture A centerless grinding fixture for grinding multi-diamtter forms that do not lend themselves to be ground on a conventional centerless grinder. An example of such a part will be shown in which all surfaces,including the sides,may be ground without removing...	01/23/2001
6135861	Shaft polishing method and a shaft produced thereby A shaft polishing method includes a roughing step in which the length of fresh abrasive tape is pressed against an area, such as a hydraulic seal area, for selected time intervals while the shaft is rotated at a relatively low speed. A roughing step is fo...	10/24/2000
6123605	Dressing device for centerless grinding machine and dressing method for centerless grinding machine A dressing device capable of effectively performing, in a centerless grinding machine, dressing to a grinding face of a grinding wheel and a rotary supporting face of a regulating wheel, performing relative positioning in axial direction of the grinding w...	09/26/2000
6113471	Chassis journal corrector system A system for correcting and truing worn journals in engines and motors without removing the crankshaft from the apparatus, or removing the engine from the chassis of a vehicle and disassembling the same. An engine may be left in the chassis, the crankcase...	09/05/2000
6083084	Machining apparatus and process using cold gas stream, and cold gas stream cooling device and method for centerless grinder Machining apparatus for machining a workpiece with a machining tool, including a work holder for holding the workpiece, and a cold gas stream supply device including a cooling gas nozzle through which a cold gas stream is supplied to a machining point, an...	07/04/2000
6077146	Method of correcting a taper in a grinding machine, and apparatus for the same A taper correcting apparatus for a grinding machine comprises: workpiece supporting means for supporting a workpiece in parallel with a grinding wheel spindle; a cutting and feeding device which moves back and forth a cylindrical grinding wheel with respe...	06/20/2000
5928061	Wheel-head feed mechanism and grinder using the same A wheel-head feed mechanism for a grinder comprising a base and a wheel head which is guided by a linear guide section provided on the base and rotatably supports a grinding wheel via a wheel spindle driven by a motor. The wheel-head feed mechanism includ...	07/27/1999
5928065	Centerless grinding machine with optimal regulating wheel truing and dressing An improved truing and dressing assembly and associated thru-feed centerless grinding machine is provided which effectively shapes the outer surface of a regulating wheel so as to allow the regulating wheel to follow the profile of the workpiece during gr...	07/27/1999
5643051	Centerless grinding process and apparatus therefor In a method for minimizing the roundness error in an workpiece having a generally circular periphery during centerless grinding of the workpiece, the workpiece is rotatably supported on the upper surface of a first workpiece support between the grinding w...	07/01/1997
5573451	Cylindrical grinding machine A cylindrical grinding machine has a machine base, a driven workhead with a slide drive and a driven wheelhead with a slide drive. The machine base is formed as a fixed plate, which can be aligned horizontally or vertically. A tailstock has a slide drive ...	11/12/1996
5569059	System for driving a centerless grinder regulating wheel An electric servomotor drive system for controlling the regulating wheel of a centerless grinder is disclosed. The electric servomotor replaces the transmission normally used on centerless grinders and provides infinitely variable speed control of the reg...	10/29/1996
5074078	Device for circular and/or profile grinding In the case of a device for circular and/or profile grinding, it is provided that the grinding tool is constructed as a ring, which, on its interior circumference, is provided with an abrasive coating. In preferred embodiments the ring shaped grinding too...	12/24/1991
5022802	System for generating a tooth profile used in a differential speed reduction apparatus The production of differential speed reduction apparatus, which uses a double-toothed gear including face cams having tooth profiles uniquely generated to secure efficient speed reduction. The speed reduction apparatus includes an input shaft carrying the...	06/11/1991
5007204	Apparatus for shaping ingots into right circular cylindrical form An apparatus for smoothing the surface of a monocrystal ingot comprising a center axis finding device, an external cylindrical grinding unit, an ingot setting unit, and an automatic diameter control unit which controls the grinding amount of the external ...	04/16/1991
4827673	Process and device for grinding moulding blanks to size For grinding to size a preform (18), particularly a cast preform, wherewith one or more cyindrical or conical regions (3, 4) and an end region (10) are to be ground to size between centers without re-chucking, a U-shaped intermediate jig (23) is required,...	05/09/1989
4679355	Apparatus for grinding a semifinished steel product An apparatus grinding a steel billet to remove surface cracks. The billet is advanced in the direction of it longitudinal axis while being rotated. The apparatus includes a grinding wheel mounted in a bearing in a movably mounted support member. In order ...	07/14/1987
4644700	Tailstock for universal grinding machines The tailstock of a universal grinding machine has a lower part which is affixed to the frame at a level below the indexible head for a set of grinding spindles, and an upper part which supports one or more dead centers and is indexible relative to the low...	02/24/1987
4274229	Frames of grinding machines The grinding machine comprises a frame having an upper portion in the form of a stationary table for supporting a grinding-wheel carriage, and a bed provided with slideways for supporting the headstock and tailstock between which is mounted the workpiece ...	06/23/1981
4009538	Fixture for converting a centerless grinder to a center grinder A fixture for converting a centerless grinder to a center grinder and the center grinder obtained thereby where such fixture comprises in combination a base member adapted for mounting on the support means of a centerless grinder, a headstock member slida...	03/01/1977

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Class 451/243 - With "dead" center