Method for returning a movable part to the original point

Details Method for returning a movable part to the original point Method for returning a movable part to the original point

1984-04-13

1985-11-12

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

Limit or end-stop control

318601, 318603, G05G 500

Patent

active

045530793

ABSTRACT:
A method of returning a movable top guide to the original point as defined by a frame of a machine body. The method comprises the steps of first moving in one direction the top guide to the frame at a high speed, moving the opposite direction the top guide away from the frame at an intermediate speed for a prescribed length of time after an overrun switch set at a point a little beyond the original point is rendered non-conductive, moving in one direction the top guide to the frame at a low speed and stopping the movement of the top guide when the original point switch provided at the original point is rendered nonconductive.

REFERENCES:
patent: 3586953 (1971-06-01), Markkanen

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