Gear cutting – milling – or planing – Milling – Detachable or repositionable tool head
Patent
1996-11-01
1998-10-20
Briggs, William R.
Gear cutting, milling, or planing
Milling
Detachable or repositionable tool head
408239A, 409233, B23C 900, B23B 3104
Patent
active
058237224
ABSTRACT:
An automatic tool changer provides an attachment to be easily clamped if the attachment is mounted to a spindle head. Conical disk springs are arranged between the bevel gear for rotating a tool spindle supported by bearings at the center of an attachment body and the spline shaft projecting from the lower end of a shank member of the attachment to be mounted to the main spindle and inserted into the central part of the bevel gear. If the shank member is drawn up by a collet, the conical disk springs are compressed, and large diameter coupling provided at the attachment body engages with a large diameter coupling provided at the lower end face of a spindle ram. The attachment is thereby fixed to a spindle head and the turning torque of the main spindle is transmitted to a tool held by the attachment. If the drawing up of the shank member by the collet is released, a small diameter coupling provided at the shank member engages with a small diameter coupling provided at the attachment body, and the turning torque of the main spindle is transmitted for indexing the mounting position of the attachment by swivelling.
REFERENCES:
patent: 3757637 (1973-09-01), Eich et al.
patent: 4412766 (1983-11-01), Eckstein
patent: 4709455 (1987-12-01), D'Andrea et al.
patent: 5188493 (1993-02-01), Heel
Briggs William R.
Okuma Corporation
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