Work holders – Holder mounted for movement – With indexing steps
Patent
1991-09-18
1992-03-03
Watson, Robert C.
Work holders
Holder mounted for movement
With indexing steps
269 75, 269287, 269254CS, 269111, 269 88, B23Q 306
Patent
active
050925695
ABSTRACT:
A workpiece holding device is used to retain a workpiece that is to be provided on a rotatable workbench of a machining equipment and includes a clamping assembly that is formed as a hollow sphere having six inner sides which confine a cubic receiving space. The hollow sphere is divided into a plurality of curved pieces by cutting the hollow sphere along six cutting planes which are coplanar with the six inner sides. Each of the six inner sides is provided with a plurality of clamping pins which are biased so as to extend into the cubic receiving space and contact the workpiece. A clamping seat assembly is to be provided on top of the rotatable workbench and confines an accessible spherical receiving space. The clamping assembly is rotatably provided in the spherical receiving space. The curved pieces are selectively assembled and disassembled so as to expose the side of the workpiece that is to be machined.
REFERENCES:
patent: 3106111 (1963-10-01), Denisco
patent: 3822959 (1974-07-01), Tobard
patent: 4373980 (1983-02-01), Skolmieski et al.
patent: 4585217 (1986-04-01), Erickson
patent: 4828240 (1989-05-01), Longenecker et al.
patent: 5052092 (1991-10-01), Vallauri et al.
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