Grinding machine

Claim 2

A grinding machine comprising a. a plate adapted to be fastened to a base of the machine and to extend around a substantial portion of a cylindrical workpiece, b. two support elements fastened to the plate at substantially spaced portions of the workpiece, each element having a groove with opposed sides and a bottom, the sides being inclined to one another and farther apart close to the bottom, the bottom being formed as two plane surfaces related in a wide-angled V, c. a carbide contact element for contact with the workpiece associated with the groove of each support element and having sides and a bottom corresponding substantially to the corresponding portions of the groove, and d. a elastomer element interposed between the bottoms of each groove and its contact element.

Claim 3

A grinding machine for generating a surface of revolution on a workpiece, comprising a. a base, b. means mounted on the base for rotating the workpiece about the axis of the said surface, c. a support element mounted on the base, d. a hard-material contact element attached to the support element for engaging and supporting the workpiece, and e. an elastomer material layer interposed between the two elements, the support element being provided wit a groove and the contact element and the elastomer material residing in the groove, the groove being formed with two opposed sides and a bottom formed as two flat surfaces forming a wide-angled V, a substantial portion of the contact element extending exteriorly of the groove to present an operative surface for engagement with a workpiece.

Claim 4

A grinding machine for generating a surface of revolution on a workpiece, comprising a. a base, b. means mounted on the base for rotating the workpiece about the axis of the said surface, c. a support element mounted on the base, d. a hard-material contact element attached to the support element for engaging and supporting the workpiece, and e. an elastomer material layer interposed between the two elements, the support element being provided wit a groove and the contact element and the elastomer material residing in the groove, the groove being formed with two opposed sides and a bottom formed as two flat surfaces forming a wide-angled V, a substantial portion of the contact element extending exteriorly of the groove to present an operative surface for engagement with a workpiece.

Claim 5

A grinding machine as recited in claim 2, wherein the contact element is in the form of a block of tungsten carbide.

Claim 6

A grinding machine as recited in claim 2, wherein the sides reside at an angle to one another, such that they are farther apart adjacent the said bottom.

Claim 7

A grinding machine as recited in claim 2, wherein an elongated slit is formed in the support element extending away from the groove and dividing the support into two parts.

Claim 8

A grinding machine as recited in claim 5, wherein the slit terminates at the end away from the groove in a bore extending through the support element and wherein a threaded fastener extends between the two parts separated by the slit to draw the sides of the groove closer together to clamp the contact element loosely in place.

Claim 9

A grinding machine as recited in claim 2, wherein the elastomer material is in the form of a layer lying between the bottom of the groove and the corresponding surface of the contact element.