Tool rest for grinding wheel with automatic wear compensation

Claim 2

A workholder for a grinding wheel comprising a platform mounted for reciprocating movement toward and away from the axis of rotation of a grinding wheel with one part of the platform in close proximity to the periphery of the grinding wheel, an adjusting lever mounted for oscillation on a stationary axis, one end of said lever being connected mechanically to said platform, a contact member carried by said lever and engageable with the periphery of said wheel when the wheel is at rest, said contact member and the periphery of said wheel defining in part an air flow passage that receives air set in motion due to the shear forces that exist between the ambient air and the rotating wheel, the force established by the resulting air pressure on said lever causing compensating adjustments of said platform upon changes in the diameter wheel due to wear said contact member comprising a contact roller wheel carried by one end of said lever, the periphery of said roller wheel engaging the periphery of said grinding wheel when the grinding wheel is stationary and moving away from the periphery of said grinding wheel due to static pressure forces created by air circulation upon rotation of said grinding wheel.

Claim 3

A workholder for a grinding wheel comprising a platform mounted for reciprocating movement toward and away from the axis of rotation of a grinding wheel with one part of the platform in close proximity to the periphery of the grinding wheel, an adjusting lever mounted for oscillation on a stationary axis, one end of said lever being connected mechanically to said platform, a contact member carried by said lever and engageable with the periphery of said wheel when the wheel is at rest, said contact member and the periphery of said wheel defining in part an air flow passage that receives air set in motion due to the shear forces that exist between the ambient air and the rotating wheel, the force established by the resulting air pressure on said lever causing compensating adjustments of said platform upon changes in the diameter wheel due to wear, said platform includes a horizontal member defining a horizontal work supporting surface, a stationary base, friction reducing mounting means for establishing relatively friction-free translatory movement of said platform along said base in a direction perpendicular to the axis of rotation of said grinding wheel, and means for normally urging said lever in one angular direction thereby tending to cause said contact member to engage the periphery of said wheel said contact member comprising a contact roller wheel carried by one end of said lever, the periphery of said roller wheel engaging the periphery of said grinding wheel when the grinding wheel is stationary and moving away from the periphery of said grinding wheel due to static pressure forces created by air circulation caused by rotation of said grinding wheel.

Claim 4

A workholder for a grinding wheel comprising a platform mounted for reciprocating movement toward and away from the axis of rotation of a grinding wheel with one part of the platform in close proximity to the periphery of the grinding wheel, an adjusting lever mounted for oscillation on a stationary axis, one end of said lever being connected mechanically to said platform, a contact member carried by said lever and engageable with the periphery of said wheel when the wheel is at rest, said contact member and the periphery of said wheel defining in part an air flow passage that receives air set in motion due to the shear forces that exist between the ambient air and the rotating wheel, the force established by the resulting air pressure on said lever causing compensating adjustments of said platform upon changes in the diameter wheel due to wear, said platform includes a horizontal member defining a horizontal work supporting surface, a stationary base, friction reducing mounting means for establishing relatively friction-free translatory movement of said platform along said base in a direction perpendicular to the axis of rotation of said grinding wheel, and means for normally urging said lever in one angular direction thereby tending to cause said contact member to engage the periphery of said wheel said contact member comprising a contact roller wheel carried by one end of said lever, the periphery of said roller wheel engaging the periphery of said grinding wheel when the grinding wheel is stationary and moving away from the periphery of said grinding wheel due to static pressure forces created by air circulation caused by rotation of said grinding wheel.

Claim 5

A workholder for a grinding wheel comprising a platform mounted for reciprocating movement toward and away from the axis of rotation of a grinding wheel with one part of the platform in close proximity to the periphery of the grinding wheel, an adjusting lever mounted for oscillation on a stationary axis, one end of said lever being connected mechanically to said platform, a contact member carried by said lever and engageable with the periphery of said wheel when the wheel is at rest, said contact member and the periphery of said wheel defining in part an air flow passage that receives air set in motion due to the shear forces that exist between the ambient air and the rotating wheel, the force established by the resulting air pressure on said lever causing compensating adjustments of said platform upon changes in the diameter wheel due to wear, said contact member comprising a contact roller wheel carried by one end of said lever, the periphery of said roller wheel engaging the periphery Of said grinding wheel when the grinding wheel is stationary and moving away from the periphery of said grinding wheel due to static pressure forces created by air circulation upon rotation of said grinding wheel, the connection between said lever and said platform comprising relatively rotatable threaded parts whereby the effective length of said connection may be varied as desired thereby providing a predetermined initial position of said platform relative to the periphery of said wheel.

Claim 6

A workholder for a grinding wheel comprising a platform mounted for reciprocating movement toward and away from the axis of rotation of a grinding wheel with one part of the platform in close proximity to the periphery of the grinding wheel, an adjusting lever mounted for oscillation on a stationary axis, one end of said lever being connected mechanically to said platform, a contact member carried by said lever and engageable with the periphery of said wheel when the wheel is at rest, said contact member and the periphery of said wheel defining in part an air flow passage that receives air set in motion due to the shear forces that exist between the ambient air and the rotating wheel, the force established by the resulting air pressure on said lever causing compensating adjustments of said platform upon changes in the diameter wheel due to wear, said contact member comprising a contact roller wheel carried by one end of said lever, the periphery of said roller wheel engaging the periphery Of said grinding wheel when the grinding wheel is stationary and moving away from the periphery of said grinding wheel due to static pressure forces created by air circulation upon rotation of said grinding wheel, the connection between said lever and said platform comprising relatively rotatable threaded parts whereby the effective length of said connection may be varied as desired thereby providing a predetermined initial position of said platform relative to the periphery of said wheel.

Claim 7

A workholder for a grinding wheel comprising a platform mounted for reciprocating movement toward and away from the axis of rotation of a grinding wheel with one part of the platform in close proximity to the periphery of the grinding wheel, an adjusting lever mounted for oscillation on a stationary axis, one end of said lever being connected mechanically to said platform, a contact member carried by said lever and engageable with the periphery of said wheel when the wheel is at rest, said contact member and the periphery of said wheel defining in part an air flow passage that receives air set in motion due to the shear forces that exist between the ambient air and the rotating wheel, the force established by the resulting air pressure on said lever causing compensating adjustments of said platform upon changes in the diameter wheel due to wear, said platform includes a horizontal member defining a horizontal work supporting surface, a stationary base, friction reducing mounting means for establishing relatively friction-free translatory movement of said platform along said base in a direction perpendicular to the axis of rotation of said grinding wheel, and means for normally urging said lever in one angular direction thereby tending to cause said contact member to engage the periphery of said wheel, said contact member comprising a contact roller wheel carried by one end of said lever, the periphery of said roller wheel engaging the periphery of said grinding wheel when the grinding wheel is stationary and moving away from the periphery of said grinding wheel due to static pressure forces created by air circulation caused by rotation of said grinding wheel, the connection between said lever and said platform comprising relatively rotatable threaded parts whereby the effective length of said connection may be varied as desired thereby providing a predetermined initial position of said platform relative to the periphery of said wheel.

Claim 8

A workholder for a grinding wheel comprising a platform mounted for reciprocating movement toward and away from the axis of rotation of a grinding wheel with one part of the platform in close proximity to the periphery of the grinding wheel, an adjusting lever mounted for oscillation on a stationary axis, one end of said lever being connected mechanically to said platform, a contact member carried by said lever and engageable with the periphery of said wheel when the wheel is at rest, said contact member and the periphery of said wheel defining in part an air flow passage that receives air set in motion due to the shear forces that exist between the ambient air and the rotating wheel, the force established by the resulting air pressure on said lever causing compensating adjustments of said platform upon changes in the diameter wheel due to wear, said platform includes a horizontal member defining a horizontal work supporting surface, a stationary base, friction reducing mounting means for establishing relatively friction-free translatory movement of said platform along said base in a direction perpendicular to the axis of rotation of said grinding wheel, and means for normally urging said lever in one angular direction thereby tending to cause said contact member to engage the periphery of said wheel, said contact member comprising a contact roller wheel carried by one end of said lever, the periphery of said roller wheel engaging the periphery of said grinding wheel when the grinding wheel is stationary and moving away from the periphery of said grinding wheel due to static pressure forces created by air circulation caused by rotation of said grinding wheel, the connection between said lever and said platform comprising relatively rotatable threaded parts whereby the effective length of said connection may be varied as desired thereby providing a predetermined initial position of said platform relative to the periphery of said wheel.

Claim 9

A workholder for a grinding wheel comprising a platform mounted for reciprocating movement toward and away from the axis of rotation of a grinding wheel with one part of the platform in close proximity to the periphery of the grinding wheel, an adjusting lever mounted for oscillation on a stationary axis, one end of said lever being connected mechanically to said platform, a contact member carried by said lever and engageable with the periphery of said wheel when the wheel is at rest, said contact member and the periphery of said wheel defining in part an air flow passage that receives air set in motion due to the shear forces that exist between the ambient air and the rotating wheel, the force established by the resulting air pressure on said lever cuasing compensating adjustments of said platform upon changes in the diameter wheel due to wear, said contact member comprising a contact roller wheel carried by one end of said lever, the periphery of said roller wheel engaging the periphery of said grinding wheel when the grinding wheel is stationary and moving away from the periphery of said grinding wheel due to static pressure forces created by air circulation upon rotation of said grinding wheel, said platform comprising a fluid damper having relatively movable parts, one part being connected to a stationary portion of said workholder and the other part being connected to movable portions of said platform whereby dampening forces resist displacement of said platform due to excessive loads.

Claim 10

A workholder for a grinding wheel comprising a platform mounted for reciprocating movement toward and away from the axis of rotation of a grinding wheel with one part of the platform in close proximity to the periphery of the grinding wheel, an adjusting lever mounted for oscillation on a stationary axis, one end of said lever being connected mechanically to said platform, a contact member carried by said lever and engageable with the periphery of said wheel when the wheel is at rest, said contact member and the periphery of said wheel defining in part an air flow passage that receives air set in motion due to the shear forces that exist between the ambient air and the rotating wheel, the force established by the resulting air pressure on said lever cuasing compensating adjustments of said platform upon changes in the diameter wheel due to wear, said contact member comprising a contact roller wheel carried by one end of said lever, the periphery of said roller wheel engaging the periphery of said grinding wheel when the grinding wheel is stationary and moving away from the periphery of said grinding wheel due to static pressure forces created by air circulation upon rotation of said grinding wheel, said platform comprising a fluid damper having relatively movable parts, one part being connected to a stationary portion of said workholder and the other part being connected to movable portions of said platform whereby dampening forces resist displacement of said platform due to excessive loads.

Claim 11

A workholder for a grinding wheel comprising a plaTform mounted for reciprocating movement toward and away from the axis of rotation of a grinding wheel with one part of the platform in close proximity to the periphery of the grinding wheel, an adjusting lever mounted for oscillation on a stationary axis, one end of said lever being connected mechanically to said platform, a contact member carried by said lever and engageable with the periphery of said wheel when the wheel is at rest, said contact member and the periphery of said wheel defining in part an air flow passage that receives air set in motion due to the shear forces that exist between the ambient air and the rotating wheel, the force established by the resulting air pressure on said lever causing compensating adjustments of said platform upon changes in the diameter wheel due to wear, said platform includes a horizontal member defining a horizontal work supporting surface, a stationary base, friction reducing mounting means for establishing relatively friction-free translatory movement of said platform along said base in a direction perpendicular to the axis of rotation of said grinding wheel, and means for normally urging said lever in one angular direction thereby tending to cause said contact member to engage the periphery of said wheel, said contact member comprising a contact roller wheel carried by one end of said lever, the periphery of said roller wheel engaging the periphery of said grinding wheel when the grinding wheel is stationary and moving away from the periphery of said grinding wheel due to static pressure forces created by air circulation caused by rotation of said grinding wheel, said platform comprising a fluid damper having relatively movable parts, one part being connected to a stationary portion of said workholder and the other part being connected to movable portions of said platform whereby dampening forces resist displacement of said platform due to excessive loads.

Claim 12

A workholder for a grinding wheel comprising a plaTform mounted for reciprocating movement toward and away from the axis of rotation of a grinding wheel with one part of the platform in close proximity to the periphery of the grinding wheel, an adjusting lever mounted for oscillation on a stationary axis, one end of said lever being connected mechanically to said platform, a contact member carried by said lever and engageable with the periphery of said wheel when the wheel is at rest, said contact member and the periphery of said wheel defining in part an air flow passage that receives air set in motion due to the shear forces that exist between the ambient air and the rotating wheel, the force established by the resulting air pressure on said lever causing compensating adjustments of said platform upon changes in the diameter wheel due to wear, said platform includes a horizontal member defining a horizontal work supporting surface, a stationary base, friction reducing mounting means for establishing relatively friction-free translatory movement of said platform along said base in a direction perpendicular to the axis of rotation of said grinding wheel, and means for normally urging said lever in one angular direction thereby tending to cause said contact member to engage the periphery of said wheel, said contact member comprising a contact roller wheel carried by one end of said lever, the periphery of said roller wheel engaging the periphery of said grinding wheel when the grinding wheel is stationary and moving away from the periphery of said grinding wheel due to static pressure forces created by air circulation caused by rotation of said grinding wheel, said platform comprising a fluid damper having relatively movable parts, one part being connected to a stationary portion of said workholder and the other part being connected to movable portions of said platform whereby dampening forces resist displacement of said platform due to excessive loads.