Method of retracting and returning a tool from and to a workpiec

Details Method of retracting and returning a tool from and to a workpiec Method of retracting and returning a tool from and to a workpiec

1983-08-29

1986-06-24

Fleming, Michael R.

Boots, shoes, and leggings

364169, 364474, 318572, 408 12, 408 13, 82 2B, G05B 1304, G05B 1924

Patent

active

045970408

ABSTRACT:
The control of a tool during a machining operation on a workpiece by means of a numerically controlled device may be interrupted for various reasons. On the occurrence of an interruption the tool is immediately retracted from the workpiece in order to be moved to a retraction position R to avoid marking the workpiece. When the tool is returned to the workpiece, the invention provides a method of moving it so that it converges tangentially towards the workpiece along a curved path, taking up the original tool machining path without marking the workpiece.

REFERENCES:
patent: 4017723 (1977-04-01), Fickes
patent: 4271710 (1981-06-01), Brems
patent: 4409650 (1983-10-01), Noguchi
patent: 4503493 (1985-03-01), Burkhardt et al.

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