Vacuum casting heads and clamps

Details Vacuum casting heads and clamps Vacuum casting heads and clamps

1977-08-01

1978-07-04

Watson, Robert C.

Work holders

With fluid means

With movable diaphragm

269 21, B23Q 300

Patent

active

040984990

ABSTRACT:
A casting head and clamp arrangement for vacuum aspiration casting of metal rods in glass tubes is provided having a casting head with a generally vertical vacuum passage, a removable fluid pressure chuck in the lower end of said vacuum passage adapted to receive and hold the end of a glass tube, said chuck including a pair of spaced annular support discs, spaced elongate members connecting said support discs, sleeve members having an internal diameter larger than a glass tube to be held fixed on each of support disc annulus and projecting beyond said discs between the elongate members, an elastomer tube fixed at its opposite ends to the sleeve members and having an internal diameter larger than the diameter of the glass tube to be held and fluid pressure means acting between said discs to cause the elastomer tube to decrease in effective internal diameter under pressure to engage and hold the glass tube ends and to release the tube ends when the fluid pressure is released.

REFERENCES:
patent: 3844546 (1974-10-01), Greenberg

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