B - Operations – Transporting – 23 – B
Patent
B - Operations, Transporting
23
B
29/1
B23B 21/00 (2006.01) B23Q 5/34 (2006.01) B23Q 5/40 (2006.01)
Patent
CA 1122391
ABSTRACT OF THE DISCLOSURE: A machine tool feed system of the type in which a tool supporting sliding carriage is moved toward and away from a workpiece which includes a mechanism for moving the carriage initially in a smoothly accelerated-decelerated rapid advance stroke toward the work and further moving the carriage in the same direction through a predetermined work stroke in a slower feed motion while the tool operates on the work. The mechanism thereafter retracts the tool carriage away from the work in a smoothly accelerated- decelerated rapid return stroke equal in distance to the feed stroke added to the rapid advance stroke. Mechanisms are provided for a first drive for the rapid advance stroke and a second drive for the work stroke, with interconnection with the tool carriage which unlock a portion of the first drive mechanism while initiating the second drive for the work stroke, and regenerating or relocking the interconnec- tion during the composite rapid return stroke. ?
354212
Brems John Henry
Marks & Clerk
LandOfFree
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