Tool changing – With safety means – Guard
Patent
1992-06-24
1993-09-21
Bilinsky, Z. R.
Tool changing
With safety means
Guard
82131, 409134, B23B 326, B23Q 3157
Patent
active
052464148
ABSTRACT:
A servomotor-driven U-axis tool member rotation device for a boring and facing head is affixed to a machine by a bracket, and has a torque coupling slidable on the servomotor shaft. A cover is mounted to a pivot shaft on the bracket, and is rotated by the servomotor to selectively cover and uncover the torque coupling. The cover pivot shaft has a driven gear, and the torque coupling has a driving gear. When a U-axis head is disengaged from the torque coupling and machine spindle, the gears are held in mesh by a biasing spring applied to the torque coupling, and the cover may be rotated. When a U-axis head engages the torque coupling, the biasing spring is overcome and the gears are forced out of mesh; at this time, the servomotor may rotate the input tool member of the U-axis head to position its tool, while the cover remains stationary in the open position.
REFERENCES:
patent: 3512817 (1970-05-01), Attermeyer
patent: 3930302 (1976-01-01), Ochiai et al.
patent: 4354305 (1982-10-01), Plummer et al.
patent: 4404728 (1983-09-01), Ishikawa
patent: 4489629 (1984-12-01), D'Andrea et al.
patent: 4607549 (1986-08-01), Krempel
patent: 4612831 (1986-09-01), Lehmkuhl
patent: 4930953 (1990-06-01), Fischer
Cincinnati Milacron Inc. brochure Publication No. M-5294, "MAXIM" 500 Horizontal CNC Machining Center.
Photocopy: Kennametal Company "UCenter" boring heads technical manual.
Photocopy: Micron Instrument Corp. programmable limit swich manual.
Bilinsky Z. R.
Cincinnati Milacron Inc.
Farrell Thomas M.
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