Micrometric device for finishing bores

Cutting by use of rotating axially moving tool – Tool-support with means to move tool relative to tool-support – To move radially

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Details

408 57, 408153, B23B 5100

Patent

active

053261984

ABSTRACT:
The invention relates to an improved micrometric device for finishing bores of the type having a substantially cylindrical body in the interior of which are mounted displacement devices that actuate on a tool holder displaceable in the same direction as the radial component of the work force. The displacement devices are provided with a backlash suppression system and a movement transmission mechanism. The movement transmission mechanism is provided with a graduated drum coaxially mounted to a micrometric screw. The micrometric screw is axially and radially supported in relation to the body of the micrometric device by a support system. In accordance with the invention, on an upper threaded extension of micrometric screw, a cylindrical rod is mounted that incorporates at its upper end, an oblique portion or extension set off by an angle in relation to the longitudinal axis of micrometric screw. The oblique extension is lodged in a hole of a crossbeam which is displaced on guideways and balls such that a radial displacement of the tool holder is possible.

REFERENCES:
patent: 4621548 (1986-11-01), Kubo et al.
patent: 5222846 (1993-06-01), Komi

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