Machine tool provided with tool changer

Details Machine tool provided with tool changer Machine tool provided with tool changer

1996-05-17

1997-07-22

Briggs, William R.

Tool changing

With safety means

Guard

B23Q 3157

Patent

active

056498870

ABSTRACT:
An ATC according to the invention swivels a changer arm 44 by means of a first cam 24, pulls out a tool and brings a replacement tool into position by means of a second cam, open/closes a sliding cover 61 by way of a chain 62 and over-drive gears 53, 58 and 55, 59 by means of a third cam, exploiting a slight rotation of an arm shaft 51 and clamps/unclamps the tool T on a spindle by feeding actuator oil to a hydraulic cylinder on the spindle head side by driving a piston pump 47 by a fourth cam 25. Additionally, a shift gear 34 is moved by a hydraulic cylinder 29 to drive either the cam shaft 21 or the magazine drive shaft 31 by means of a motor 14 so that the four cams can be driven by a single cam and, at the same time, the tool magazine is also swivelled and indexed by the same motor.

REFERENCES:
patent: 3775837 (1973-12-01), Tomita et al.
patent: 3930302 (1976-01-01), Ochiai et al.
patent: 4274192 (1981-06-01), Norimatsu
patent: 4335498 (1982-06-01), Hague et al.
patent: 4654953 (1987-04-01), Hobbs
patent: 4679296 (1987-07-01), Watanabe
patent: 4831714 (1989-05-01), Babel et al.
patent: 5224916 (1993-07-01), Chang

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