Grinding machine with two grinding wheels
First Claim
1. A grinding machine comprising a main frame, a wheelhead and a worktable, defining a workpiece axis, wherein the wheelhead is slidable relative to the mainframe perpendicularly to the workpiece axis, and the worktable is slidable relative to the main frame perpendicularly to the direction of movement of the wheelhead, and a computer supplied with data indicative of at least one operational parameter of the grinding process, wherein the wheelhead feed is under the control of signals generated by the computer, and further comprising:
- (a) a frame hingably mounted on the wheelhead parallel to the workpiece axis, (b) two independently driven small diameter grinding wheels are mounted on the frame remote from the hinged mounting, (c) pivoting of the frame causes the axis of one or the other of the two small wheels to be aligned with the workpiece axis, (d) the worktable includes a headstock including a workpiece drive for rotating a workpiece during grinding, and (e) the pivoting of the frame and the speed of rotation of the workpiece driver are also controlled by signals generated by the computer.
3 Assignments
0 Petitions
Accused Products
Abstract
A grinding machine is disclosed comprising a main frame, a wheelhead, a worktable (16), a headstock (12) and tailstock (14) carried by the worktable (16). A computer is supplied with data indicative of at least one operational parameter of the grinding proces, and the wheelfeed is under the control of signals generated by the computer. Two small diameter grinding wheels (22, 24) are mounted on two parallel spindels mounted on a support member (32) and are independently driven by two motors (28, 30) mounted at the other ends of the spindles. The support member (32) is pivotally joined to the wheelhead. The headstock (12) includes a workpiece drive (20) for rotating the workpiece during a grinding, and its speed of rotation is also controlled by signals generated by the computer. The length of the spindles positions each of the motors (28, 30) axially clear of the tailstock assembly when the wheels (22, 24) are aligned to engaged regions of a workpiece nearest to the headstock (22).
18 Citations
24 Claims
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1. A grinding machine comprising a main frame, a wheelhead and a worktable, defining a workpiece axis, wherein the wheelhead is slidable relative to the mainframe perpendicularly to the workpiece axis, and the worktable is slidable relative to the main frame perpendicularly to the direction of movement of the wheelhead, and a computer supplied with data indicative of at least one operational parameter of the grinding process, wherein the wheelhead feed is under the control of signals generated by the computer, and further comprising:
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(a) a frame hingably mounted on the wheelhead parallel to the workpiece axis, (b) two independently driven small diameter grinding wheels are mounted on the frame remote from the hinged mounting, (c) pivoting of the frame causes the axis of one or the other of the two small wheels to be aligned with the workpiece axis, (d) the worktable includes a headstock including a workpiece drive for rotating a workpiece during grinding, and (e) the pivoting of the frame and the speed of rotation of the workpiece driver are also controlled by signals generated by the computer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of grinding cylindrical workpieces such as crankpins of crankshafts using computer controlled wheelfeed and headstock drives in a two-wheel grinding machine having a headstock drive serving to rotate the workpiece wherein during the grinding of each workpiece:
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(i) a cutting force is maintained on a wheelsupport to keep the wheel and workpiece under a moderate constant load; and
wherein(ii) a rotational speed of the headstock drive is reduced to prevent bounce and therefore chatter marks appearing in the surface of the workpiece. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification