Tool changing – Including machine tool or component – Rotary spindle machine tool
Patent
1998-03-12
1999-09-07
Briggs, William
Tool changing
Including machine tool or component
Rotary spindle machine tool
483 39, B23Q 3157
Patent
active
059478780
ABSTRACT:
A tool exchange device is capable of automatically and swiftly exchanging tools during non-cutting processes. The tool exchange device includes a motor; a belt assembly capable of being driven by the motor; a reduction gear assembly having a worm engaged with the belt assembly, and a worm gear meshed with the worm; a compound cam having a concave globoidal cam, a first grooved face cam, a first cam follower, a second grooved face cam, and a second cam follower; a swap assembly having a swap arm, a rotation shaft affixed to the swap arm, and a set of rollers affixed to the rotation shaft and meshed with the grooves formed on the concave globoidal cam so as to drive the swap arm to rotate around its own axis through the compound cam; a force multiplying mechanism having a pivoted lever and a toggle assembly, and a slider, the pivoted lever being activated by the second cam follower of the compound cam so as to drive the slider to move reciprocally; and a head shaft having a head shaft housing, a push-pull rod, and a set of pan spring. The pan spring constantly urges the rod upward so as to clamp the tool during the cutting operation.
REFERENCES:
patent: 4833772 (1989-05-01), Kobayashi et al.
patent: 5081762 (1992-01-01), Kin
patent: 5749819 (1998-05-01), Yan et al.
patent: 5876316 (1999-03-01), Kato
Hwang Wen-Miin
Yu Chii-Zen
Briggs William
National Science Council
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