Clamping apparatus

Details Clamping apparatus Clamping apparatus

1998-10-30

2000-02-15

Watson, Robert C.

Work holders

Work-underlying support

Support mounting means

B23Q 310

Patent

active

060243546

ABSTRACT:
A housing (11) includes an annular driving member (16), into which a cylindrical pull rod (12) is inserted. An actuation member (26) is inserted into the pull rod (12). At the time of clamping, the pull rod (12) has an upper end portion fitted into a stepped hole (2) of a workpiece (1) and the driving member (16) is lowered. Then, first the pull rod (12) descends relatively to the actuation member (26) to project a plurality of engaging balls (13) outwards and subsequently these balls (13) are brought into butting contact with a lower step portion (8) of the stepped hole (2). Thus the driving member (16) pulls the workpiece (1) downward through the pull rod (12) and the balls (13).

REFERENCES:
patent: 4909493 (1990-03-01), Yonezawa
patent: 4948105 (1990-08-01), Yonezawa
patent: 5096347 (1992-03-01), Kumagai et al.
patent: 5174554 (1992-12-01), Yonezawa
patent: 5810344 (1998-09-01), Nishimoto

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