US3881887A — Apparatus and method for grinding an elongated wo…

Claim 1

Independent Claim 88 words

Apparatus for grinding a workpiece in the form of an elongated cylindrical roll from a rough diameter to a finish diameter comprising: support means for rotatably supporting the workpiece; and rotatable grinding means supported for movement in a path parallel to the axis of rotation of the workpiece, said grinding means including a rough-cutting grinding surface engageable with the workpiece in an undercutting relationship said grinding means being operable at least during the rough cutting operation to impose forces on the workpiece in a substantially axial direction only.

Claim 2

Dependent Claim 88 words

Apparatus for grinding a workpiece in the form of an elongated cylindrical roll from a rough diameter to a finish diameter comprising: support means for rotatably supporting the workpiece; and rotatable grinding means supported for movement in a path parallel to the axis of rotation of the workpiece, said grinding means including a rough-cutting grinding surface engageable with the workpiece in an undercutting relationship said grinding means being operable at least during the rough cutting operation to impose forces on the workpiece in a substantially axial direction only.

Claim 3

Dependent Claim 32 words

Apparatus as claimed in claim 1 wherein said grinding means further includes a finish-cutting grinding surface trailing the rough-cutting grinding surface and operable to finish cut the workpiece to its finish diameter.

Claim 4

Dependent Claim 74 words

Apparatus as claimed in claim 2 wherein said grinding means includes a grinding wheel having a peripheral grinding edge with two grinding surfaces extending radially inwardly therefrom on opposite sides thereof; said grinding wheel being disposed in a plane at an acute angle with respect to the axis of rotation of the workpiece with the peripheral edge located radially inwardly of the rough diameter of the workpiece with respect to the axis of rotation.

Claim 5

Dependent Claim 86 words

Apparatus as claimed in claim 2 wherein said grinding means further includes a finish grinding wheel having said finish-cutting grinding surface located thereon, said finish grinding wheel being disposed in a plane at an acute angle with respect to the axis of rotation of the workpiece and on the diametrically opposite side of said axis of rotation from said first named grinding wheel, said finish-cutting grinding surface being located with respect to the axis of rotation of the workpiece at the finish diameter of the workpiece.

Claim 6

Dependent Claim 44 words

Apparatus as claimed in claim 3 wherein one of said grinding surfaces on the side of said peripheral edge opposite the axis of rotation of the workpiece constitutes the rough-cutting grinding surface and the other of said grinding surfaces constitutes the finish-cutting grinding surface.

Claim 7

Dependent Claim 36 words

Apparatus as claimed in claim 5 wherein said peripheral grinding edge is substantially V-shaped, and said finish cutting grinding surface extends from the apex in substantially parallel relationship with the axis of rotation of the workpiece.

Claim 8

Dependent Claim 42 words

Apparatus as claimed in claim 1 wherein said support means comprises: a support and drive member having a head portion adapted to be engaged by a rotatable drive chuck and means for supporting and frictionally rotatably driving one end of a workpiece.

Claim 9

Dependent Claim 29 words

Apparatus as claimed in claim 7 wherein said support and drive member further includes a shank portion extending axially from said head portion for telescopic engagement with a workpiece.

Claim 10

Dependent Claim 51 words

Apparatus as claimed in claim 8 wherein said shank portion is cylindrical and of smaller diameter than said head portion, and further including a drive O-ring mounted on said shank fOr frictional engagement between the head portion and the end surface of the workpiece supported thereby for frictionally rotating the workpiece.

Claim 11

Dependent Claim 24 words

Apparatus as claimed in claim 9 further including a centering O-ring mounted in said shank portion at a location spaced from said head portion.

Claim 12

Dependent Claim 29 words

Apparatus as claimed in claim 10 further including a groove in said shank portion, said centering O-ring being seated in said groove and projecting outwardly from the shank portion.

Claim 13

Dependent Claim 24 words

Apparatus as claimed in claim 8 further including a centering O-ring mounted in said shank portion at a location spaced from said head portion.

Claim 14

Dependent Claim 29 words

Apparatus as claimed in claim 12 further including a groove in said shank portion, said centering O-ring being seated in said groove and projecting outwardly from the shank portion.

Claim 15

Dependent Claim 63 words

Apparatus as claimed in claim 7 wherein said support means comprises a nondriving support member spaced axially from said support and drive member in coaxial relationship therewith for supporting the end of a workpiece opposite the end to be supported by said support and drive member, said nondriving support member having a head portion adapted to be rotatably supported on a lathe center.

Claim 16

Dependent Claim 29 words

Apparatus as claimed in claim 14 wherein said nondriving support member further includes a shank portion extending axially from the head portion thereof for telescopic engagement with a workpiece.

Claim 17

Dependent Claim 67 words

Apparatus as claimed in claim 15 wherein said shank portion of said nondriving support member is cylindrical and of smaller diameter than said head portion, and further including a drive O-ring mounted on said shank for frictional engagement between the head portion thereof and the end surface of the workpiece supported thereby so that the frictional engagement causes the workpiece and nondriving support member to rotate together.

Claim 18

Dependent Claim 29 words

Apparatus as claimed in claim 16 further including a centering O-ring mounted on the shank of said nondriving support member at a location spaced from the head portion thereof.

Claim 19

Dependent Claim 34 words

Apparatus as claimed in claim 17 further including a groove on the shank portion of said nondriving support member, said centering O-ring being seated in said groove and projecting outwardly from said shank portion.

Claim 20

Dependent Claim 29 words

Apparatus as claimed in claim 15 further including a center O-ring mounted on the shank of said nondriving support member at a location spaced from the head portion thereof.

Claim 21

Dependent Claim 34 words

Apparatus as claimed in claim 19 further including a groove on the shank portion of said nondriving support member, said centering O-ring being seated in said groove and projecting outwardly from said shank portion.

Claim 22

Independent Claim 128 words

A method of grinding a workpiece in the form of an elongated cylindrical roll from a rough diameter to a finish diameter comprising the steps of: rotating the workpiece about its longitudinal axis; positioning a frusto-conical grinding surface with its large diameter edge at a location with respect to the rotary axis of the workpiece corresponding to the finish diameter of the workpiece such that the grinding surface extends at an acute angle with respect to the rotary axis of the workpiece; rotating the grinding surface about its central axis; and moving the grinding surface along the length of the workpiece to remove stock between the finish and rough diameters of the workpiece with an undercut to minimize the transverse forces on the workpiece tending toward the workpiece.

Claim 23

Independent Claim 128 words

A method of grinding a workpiece in the form of an elongated cylindrical roll from a rough diameter to a finish diameter comprising the steps of: rotating the workpiece about its longitudinal axis; positioning a frusto-conical grinding surface with its large diameter edge at a location with respect to the rotary axis of the workpiece corresponding to the finish diameter of the workpiece such that the grinding surface extends at an acute angle with respect to the rotary axis of the workpiece; rotating the grinding surface about its central axis; and moving the grinding surface along the length of the workpiece to remove stock between the finish and rough diameters of the workpiece with an undercut to minimize the transverse forces on the workpiece tending toward the workpiece.

Claim 24

Independent Claim 147 words

A method of grinding a workpiece in the form of an elongated cylindrical roll from a rough diameter to a finish diameter comprising the steps of: rotating the workpiece about its longitudinal axis; positioning a grinding wheel having a peripheral grinding edge with two grinding surfaces extending therefrom on opposite sides thereof in a location such that the grinding wheel is disposed in a plane at an acute angle with respect to the axis of rotation of the workpiece with the peripheral edge of the grinding wheel located radically inwardly of the rough diameter of the workpiece with respect to the axis of rotation; and simultaneously rotating the grinding wheel about its own central axis and moving the grinding wheel along the length of the rotating workpiece in a direction such that the peripheral edge of the grinding wheel removes stock from the workpiece with an undercut.

Claim 25

Independent Claim 147 words

A method of grinding a workpiece in the form of an elongated cylindrical roll from a rough diameter to a finish diameter comprising the steps of: rotating the workpiece about its longitudinal axis; positioning a grinding wheel having a peripheral grinding edge with two grinding surfaces extending therefrom on opposite sides thereof in a location such that the grinding wheel is disposed in a plane at an acute angle with respect to the axis of rotation of the workpiece with the peripheral edge of the grinding wheel located radically inwardly of the rough diameter of the workpiece with respect to the axis of rotation; and simultaneously rotating the grinding wheel about its own central axis and moving the grinding wheel along the length of the rotating workpiece in a direction such that the peripheral edge of the grinding wheel removes stock from the workpiece with an undercut.

Claim 26

Dependent Claim 29 words

A method as claimed in claim 22 further comprising the steps of frictionally rotatably driving at least one end of the workpiece to reduce twisting forces on the workpiece.

Claim 27

Dependent Claim 156 words

Apparatus for grinding a workpiece in the form of an elongated cylindrical roll from a rough diameter to a finish diameter comprising: support means for rotatably supporting the workpiece, a rough-cutting grinding wheel supported for movement in a path parallel to the axis of rotation of the workpiece and operable to engage the workpiece in one side thereof with an undercut relationship, and a finish-cutting grinding wheel supported for movement in a path parallel to the axis of rotation of the workpiece and operable to engage the workpiece on the opposite side thereof from said rough-cutting grinding wheel, said finish-cutting grinding wheel being located to slightly trail said rough-cutting grinding wheel along the length of the workpiece, said grinding wheels being positioned with respect to the workpiece such that the finish-cutting grinding wheel removes an amount of stock to the finish diameter that cancels any radial forces imposed on the workpiece by the rough-cutting grinding wheel.

Claim 28

Dependent Claim 156 words

Apparatus for grinding a workpiece in the form of an elongated cylindrical roll from a rough diameter to a finish diameter comprising: support means for rotatably supporting the workpiece, a rough-cutting grinding wheel supported for movement in a path parallel to the axis of rotation of the workpiece and operable to engage the workpiece in one side thereof with an undercut relationship, and a finish-cutting grinding wheel supported for movement in a path parallel to the axis of rotation of the workpiece and operable to engage the workpiece on the opposite side thereof from said rough-cutting grinding wheel, said finish-cutting grinding wheel being located to slightly trail said rough-cutting grinding wheel along the length of the workpiece, said grinding wheels being positioned with respect to the workpiece such that the finish-cutting grinding wheel removes an amount of stock to the finish diameter that cancels any radial forces imposed on the workpiece by the rough-cutting grinding wheel.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1978-05-05	1978-11-04	1979-05-06	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1982-05-05	1982-11-04	1983-05-06	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1986-05-05	1986-11-04	1987-05-06	$7700.00	Window Closed / Lapsed

Apparatus and method for grinding an elongated workpiece

Abstract

Inventors

Bibliographic Details

Claims Analysis

References Cited (Backward Citations)

USPTO Annuity & Maintenance Windows

Assigned Categories & Tags

Assign Category Tag