Automatic stop for retraction in an edm machine

Details Automatic stop for retraction in an edm machine Automatic stop for retraction in an edm machine

B - Operations, Transporting

23

H

327/30

B23H 7/30 (2006.01)

Patent

CA 1171466

ABSTRACT OF THE DISCLOSURE The disclosure teaches an EDM machine hav- ing a base supporting a workpiece, a ram reciprocable on the base and a plurality of electrodes carried by the ram to engage and drill the workpiece. In accordance with the invention, a limit switch limits the retraction movement of the ram in combination with an actuator magnetically held on and movable on the ram and an automatic stop device. The stop device includes a member on the base in a position to engage the actuator during the drilling movement of the ram to adjust the position of the actuator on the ram.

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