Tool-changing apparatus and method for a machine tool

Details Tool-changing apparatus and method for a machine tool Tool-changing apparatus and method for a machine tool

1998-07-28

1999-12-28

Briggs, William

Tool changing

Including machine tool or component

Rotary spindle machine tool

2941031, 483 38, 483 44, B23Q 3157

Patent

active

060074647

ABSTRACT:
In a tool-changing apparatus for a machine tool, a tool-locking pin and an arm-locking pin are provided in a tool-changing arm and urged upward. When the arm is moved downward by a swinging shaft, the tool-locking pin and the arm-locking pin are moved upward by the urging force of respective springs, and a tapered surface of the tool-locking pin presses an end of a roller shaft projecting from a through-hole of the tool-changing arm, thus preventing a sliding movement of the roller shaft toward the through-hole, and a tapered surface of the arm-locking pin fits in a circular groove formed on the peripheral surface of an arm central shaft coupled with the swinging shaft, thus preventing the rotation of the arm relative to an arm-supporting member. When a tool is mounted into a tool-mounting portion, arm locking is released to enable the arm to move independently of the swinging shaft.

REFERENCES:
patent: 3619898 (1971-11-01), Perry et al.
patent: 3760958 (1973-09-01), Lohneis
patent: 3786938 (1974-01-01), Kirkham
patent: 4117586 (1978-10-01), Uchida et al.
patent: 4151918 (1979-05-01), Nakane
patent: 4164809 (1979-08-01), Yamakage
patent: 4399603 (1983-08-01), Reed
patent: 4817267 (1989-04-01), Hitomi
patent: 4833772 (1989-05-01), Kobayashi et al.
patent: 5081762 (1992-01-01), Kin

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