Work holders – Holder inserted within work aperture – Expandable mandrel
Patent
1993-04-02
1994-04-19
Watson, Robert C.
Work holders
Holder inserted within work aperture
Expandable mandrel
269 49, B23Q 302
Patent
active
053039084
ABSTRACT:
A device for clamping a workpiece formed with a throughgoing hole and having a pair of faces to a support also formed with a throughgoing hole and also having a pair of faces has a tube engaged along an axis through both the holes in a position of the workpiece and support with one face of the workpiece bearing inwardly on one face of the support, the holes aligned, and the other faces of the workpiece and support turned outwardly away from each other. The tube is formed with a radially throughgoing aperture opening outwardly of one of the outer faces and with a screwthread outward of the other outer face. A retaining element is radially displaceable in the aperture between an extended position projecting radially from the tube and engageable axially with the one outer face and a retracted position generally wholly recessed in the tube. An actuating pin axially displaceable in the tube is engageable with the element to radially displace same into its extended position. A nut threaded on the screwthread of the tube has a face bearing axially inward on the other outer face. A formation on the one outer face angularly engages with the element in the extended position immediately adjacent the hole of the support of the element for preventing rotation of the tube in the holes.
REFERENCES:
patent: 1864466 (1932-06-01), Peterson
patent: 4322190 (1982-03-01), Anderson
patent: 4350463 (1982-09-01), Friedline
patent: 4932642 (1990-06-01), Salenbien et al.
patent: 4958839 (1990-09-01), Guzik et al.
patent: 5190272 (1993-03-01), Zika et al.
Carr Lane Manufacturing Co., "Adjustable Ball Lock Pins", (rev. Feb. 1991) 1 page.
Dubno Herbert
Erwin Halder KG
Watson Robert C.
Wilford Andrew
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