Cutting by use of rotating axially moving tool – Processes – Bit detachable
Patent
1999-11-05
2000-12-12
Howell, Daniel W.
Cutting by use of rotating axially moving tool
Processes
Bit detachable
408 10, 408 14, 408202, 408 16, B23B 3500, B23B 4900
Patent
active
061589292
ABSTRACT:
A method and apparatus for controlling the penetration depth of a cutting tool of a numerically controlled machine. A substantially cylindrical collar extends around at least part of the cutting tool with the collar being axially movable with respect to the axis of rotation of the cutting tool. An electronic sensor, secured to a non-rotatable housing of the numerically controlled machine transmits a signal to terminate further penetration of the cutting tool. The sensor is situated adjacent the collar and axially rearward thereof. A locking pin is provided for preventing an axially rearward end of the collar from touching an axially forward end of the electronic sensor when the collar is not being subjected to a force acting in a rearward axial direction. A nose bush for pre-positioning of the collar relative to the cutting tool in the axial direction is advantageously provided.
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BAE Systems plc
Howell Daniel W.
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