Back to results
US 4,059,927 AGranted
Grinding machine
AssigneeCincinnati Milacron-Heald Corporation
InventorEdward G. Robillard
Life of this patent
Estimating the term…
Abstract
A grinding machine in which the grinding cycle is controlled by a stepping motor which receives pulses from a linear feed-controlled generator and which is operative to give an adjustable diamond clearance.
Claims3
A grinding machine for generating a surface of revolution on a workpiece, comprising:
- p1 a. a base,
- b. a workhead and a wheelhead mounted on the base for relative movement transversely of the axis of the surface of revolution,
- c. a stepping motor operative to produce the said relative movement in response to receipt of electrical pulses,
- d. a pulse generator connected to the stepping motor to supply the said electrical pulses, the generator including a resistance unit connected to control the frequency of the pulses, the unit including an actuator movable in increments to connect equal increments of resistance to the generator, the said increments of resistance producing equal increments of frequency of pulses, and
- e. a circuit that reduces the pulse frequency to zero when an open circuit occurs in the resistance unit.
2 more elements
Dependencies are inferred from the claim text.