Work holders – Holder mounted for movement – Relative to a station
Patent
1983-09-20
1986-04-29
Weidenfeld, Gil
Work holders
Holder mounted for movement
Relative to a station
269 71, 269900, 409219, 409226, B23Q 306, B23D 708
Patent
active
045852170
ABSTRACT:
Four square tooling plates each have an outer surface on which a plurality of workpieces are attached. The inner face of each tooling plate is precisely attached to a respective vertical surface of a rectangular block by means of a dowel extending into geometrically centered holes in the vertical face of the block and the tooling plate. Precise rotational alignment of the tooling plate with the block is achieved by a peg extending from the vertical face of the block into a timing hole in the tooling plate spaced from the center hole thereof. The block, with workpiece-loaded tooling plates thereon, is lowered onto a rotary table so that a geometric axis of the block is perfectly aligned with the rotational axis of the rotary table. Rotational alignment of the block with the rotary table is achieved by mating of keys extending from the bottom of a base plate of the block into keyways in the surface of the rotary table. A numerically controlled machining device automatically machines each workpiece on the first tooling plate, causes rotation of the rotary table by 90 degrees, machines the workpieces on the second tooling plate, again indexes the rotary table 90 degrees, etc. After all workpieces have been machined, the block is lifted from the surface of the rotary table and immediately replaced with another block supporting four more workpiece-loaded tooling plates, which are being machined while the already-machined workpieces are removed from the first set of tooling plates.
REFERENCES:
patent: 2558283 (1951-06-01), Wharton et al.
patent: 3588989 (1971-06-01), Hosea
patent: 3790153 (1974-02-01), Seidenfaden
patent: 3830485 (1974-08-01), Mickelsson et al.
patent: 3967816 (1976-07-01), Ramsperger et al.
patent: 4073215 (1978-02-01), Coope et al.
patent: 4286778 (1981-09-01), Follmeyer
patent: 4477064 (1984-10-01), DiGiulio
"The Mid-State Tombstone", Mid-State Machine Products, Inc., Advertisement in Modern Machine Shop, Jun. 1981, p. 250.
"Keys to Machining Center Palletization" by Ken Gettelman, in Modern Machine Shop, Mar. 1982, pp. 61-64.
Bishop Steven C.
Weidenfeld Gil
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