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Bryant Grinder Corporation Patents
Assignee:
Bryant Grinder Corporation
Address:
Springfield, VT
No. of patents:
24
Patents:












Patent Number Title Of Patent Date Issued
5718617 Grinding force measurement system for computer controlled grinding operations February 17, 1998
The present invention relates to a system for measuring a grinding force between a workpiece and a grinding wheel during the operation of a computer controlled grinding machine. A force transducer is mounted on a drive screw assembly between a moveable slide and a motor used to control
5554063 Centerless grinder having inside diameter size control and method therefor September 10, 1996
A centerless grinding machine comprises a stationary disk, a following disk, and a shoe, which cooperate to hold and rotate a workpiece. The following disk is mechanically loaded to the bias towards the stationary disk and the shoe so that the workpiece is secured between an outer ci
5213348 Workpart chuck positioning mechanism with independent shoes May 25, 1993
A workpart chuck centering mechanism moves towards the axis of rotation of the chuck as the chuck rotates in an eccentric non-centered position. The centering mechanism includes two independent shoes. Each shoe is driven by a servo-motor and encoder. The two shoes function in a cooperati
5138799 Probe positioning mechanism for a radius dresser August 18, 1992
The present invention relates to systems and methods of controlling the dressing operation of computer numerically controlled grinding machines. A contact probe is positioned relative to a dresser and contact measurements are made to determine the position of the dresser tip relative to
5108117 Workpart chuck positioning mechanism with independent shoes April 28, 1992
A workpart chuck centering mechanism moves towards the axis of rotation of the chuck as the chuck rotates in an eccentric non-centered position. The centering mechanism includes two independent shoes. Each shoe is driven by a servo-motor and encoder. The two shoes function in a cooperati
5003730 Radius dressing apparatus April 2, 1991
A dresser is moved on a pivotal dresser holder arm relative to the pivot axis of the arm by a computer control unit using closed loop servo feedback from a position transducer to successively dress different radii and/or shapes (convex or concave) onto the same or different grinding
4926337 Automatic workpart centering mechanism for a chuck May 15, 1990
An automatic workpart centering mechanism for a magnetic or other chuck of a machine tool is provided. A computer microprocessor controls a digital air pressure regulator and/or an air solenoid valve to supply air pressure to a pneumatic centering hammer to control striking force on a wo
4890424 Workhead with workpart chuck and workpart fluid bearing January 2, 1990
The workhead includes a spindle disposed on a base member and rotatable about a rotational axis. The spindle includes a chuck for fixedly clamping one end of an elongated workpart, such as a valve lifter body, having a bore between opposite ends with the longitudinal axis of the bore
4870786 Workstock October 3, 1989
The workstock may comprise a tailstock having a slide which releasably carries a workpart center and which includes a center ejector member independently movable in the slide. The slide is mounted in a housing for axial motion toward and away from a headstock center to load and unload a
4805585 Radius dressing apparatus February 21, 1989
A dresser carried on a pivotal dresser holder arm is adjustable in position relative to the pivot axis of the arm by a computer control unit using closed loop servo feedback from a position transducer to successively dress different radii and/or shapes (convex or concave) onto the same o
4790545 Workpart centering mechanism for a chuck December 13, 1988
A workpart chuck is provided with a centering member that is movable toward the axis of rotation of the chuck as the chuck rotates the workpart in an eccentric non-centered position. As the centering member moves the workpart, a sensing device senses the extent of changing eccentric
4751647 Method for determining tool size and for machining June 14, 1988
The method involves moving a reference or dummy tool of known size on a toolhead slide from a known position to actuate a limit switch, moving a working tool of unknown size on the same toolhead slide from the same known position to again actuate the limit switch and comparing the to
4354329 Loader for grinding machine October 19, 1982
A loader (10) for a grinding machine includes a loading member (30) with at least one resilient finger (32) thereon for gripping a workpiece (14) to be ground by movement of the loading member in a loading direction as a resiliently biased workpiece positioner (34) initially counteracts
4312155 Apparatus for grinding grooves in the inner race of a constant velocity universal joint January 26, 1982
A grinding machine (10) includes apparatus for grinding grooves in inner races (16) of constant velocity universal joints with a high production output achieved by indexing of a race without stopping rotation of a holder (14) on which the race is clamped for rotation during the grinding.
4211454 Antifriction bearing support July 8, 1980
An antifriction bearing support (12) disclosed includes an outer support member (50) for mounting thereof on a spindle housing (16) and an inner support member (52) for mounting an antifriction bearing (42) which rotatably supports a spindle (38). The support also includes at least one
4211425 Replaceable collet in double diaphragm chuck July 8, 1980
A work holder adapted to minimize clamp distortion of a workpiece by providing a movable metallic collet encompassing the workpiece, and a plurality of front and rear jaws to grip the metallic collet with different pressure forces at the front and rear sections of the collet.
4125967 Interform grinding machine November 21, 1978
A grinding machine having a fixed wheelhead and a biaxially movable workslide. The workslide is mounted on a cylindrical slidebar for axial sliding motion as well as pivotal motion around the bar. A dresser assembly is also mounted pivotally on the slidebar for selective dressing ope
4040409 Grinding wheel truing mechanism August 9, 1977
A multi-function grinding wheel truing mechanism that is capable of automatically imparting to the periphery of a grinding wheel either a combination radial and straight form, a radial form, a straight form, or a Gothic Arch form. A dresser unit housing swingably supports a turn post
4023310 Interform grinding machine May 17, 1977
A grinding machine having a fixed wheelhead and a biaxially movable workslide. The workslide is mounted on a cylindrical slidebar for axial sliding motion as well as pivotal motion around the bar. A dresser assembly is also mounted pivotally on the slidebar for selective dressing ope
3958370 Single slide grinding machine with means for selectively producing a reciprocation of said slide May 25, 1976
A single-slide, mechanically and electrically programmed grinding machine comprising a rigid enclosed base, a fixed workhead assembly on the base, a pair of parallel slidebars mounted on the base, and a wheelslide assembly mounted on the base for longitudinal displacement thereover. Long
3940675 Digital positioning system February 24, 1976
A lateral feed position system for a single slide grinder or the like wherein a wheel spindle is displaced between a sequence of preset end points. The end points are input from decade switches as position commands and compared to a current position count in a digital comparator unit. An
3939944 Oil-mist lubrication system February 24, 1976
The disclosure relates in general to an oil-mist lubrication system, and more particularly to the propagation of a mixture of oil-mist to bearings of a spindle, wheelhead, or the like by means of a blender-distributor unit. A first controlled amount of air from an air supply unit is fed
3939453 Diagnostic display for machine sequence controller February 17, 1976
A sequence controller for an automatic grinding machine or the like for controlling a sequence of machine functions and for providing a display of digital information which explicitly directs an operator through manual or semi-manual functions and which also provides diagnostic informati
3932960 Single slide grinding machine January 20, 1976
A single-slide, mechanically and electrically programmed grinding machine comprising a rigid enclosed base, a fixed workhead assembly on the base, a pair of parallel slidebars mounted on the base, and a wheelslide assembly mounted on the base for longitudinal displacement thereover. Long

 
 
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