Tilting fixture system for use on a machining center

Work holders – Holder mounted for movement – With plural means for changing holder positions

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269 60, B23Q 104

Patent

active

047265779

ABSTRACT:
The six sides or angles surfaces of a part are automatically machined on a CNC or NC machining center by securing the part to a fixture plate which is mounted on a platen supported by a U-shaped frame for tilting movement between horizontal and vertical positions. The frame is secured to a pallet of the machining center, and the platen is tilted in response to rotation of twin ball screws driven by a wrench transferred to the spindle of the machining center by an automatic tool changer. In each position, the platen is precisely located and clamped to the frame by a plurality of units each including a shot pin which has a threaded end portion for engaging a corresponding nut within the platen in response to rotation by a dual-torque wrench also transferred to the spindle by the tool changer.

REFERENCES:
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patent: 2639541 (1953-05-01), Le Tang
patent: 3168003 (1965-02-01), Muller et al.
patent: 3290039 (1966-12-01), Lancaster
patent: 3788633 (1974-01-01), Cho
patent: 3822959 (1974-07-01), Tabard
patent: 4592430 (1986-06-01), Hall et al.
patent: 4611797 (1986-09-01), Cetnarowski

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