Work holders – Relatively movable jaws – With means to fasten holder to support
Patent
1988-09-14
1990-04-10
Watson, Robert C.
Work holders
Relatively movable jaws
With means to fasten holder to support
269235, 269254R, 269257, B23Q 302
Patent
active
049153676
ABSTRACT:
The embodiments of the invention described relate to clamping apparatus for parts to be machined comprising cramps presenting elastically deformable fingers which engage the flanks of the part to be machined and rigid fingers which abut the part, a T-grooved bed-plate, sliders bearing the cramps, and locking braces for locking the sliders on the bed-plate. Eccentrics enable the cramps to be advanced on the slider to bend the deformable fingers and bring the rigid fingers into abutment with the part. The opposite cramps are secured to the bed-plate in alignment with a reference face perpendicular to the grooves. Lateral grooves are provided for engagement by clamps to fix the bed-plate to a table of a machine tool. Cramps are provided in recesses under the sides of the bed-plate for alternative engagement by the jaws of a vice. Variants are described, which enable parts with non-parallel sides to be clamped. The clamping apparatus is particularly suitable for repetitive use (mass production).
REFERENCES:
patent: 449039 (1891-03-01), Fietsch
patent: 2477297 (1949-07-01), Giles et al.
patent: 2969817 (1961-01-01), Zabich
patent: 4157819 (1979-06-01), Meyer
patent: 4489927 (1984-12-01), Yamada et al.
Carossino Freres
Watson Robert C.
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