B - Operations – Transporting – 23 – Q
Patent
B - Operations, Transporting
23
Q
269/31
B23Q 3/08 (2006.01)
Patent
CA 1088115
ABSTRACT OF THE DISCLOSURE: A method and apparatus for locating a work member supporting fixture on a table and for clamping the fixture in located posi- tion on the table, especially to locate and clamp the work member during machining, in which the table is fixedly mounted in place, for example, in a machine tool with an upwardly facing horizontal surfaced receivable on the upper surface of the table and is adap- ted for fixedly supporting a work member therein. The table has passages therein under fluid pressure and a plurality of outlets lead from the passages through the upper surface of the table and are preferably provided with normally closed valves adapted to be actuated into open position by movement of a fixture there- over. The passages and outlets provide means for establishing a fluid film under pressure between the downwardly facing sur- face of the fixture and the upwardly facing surface of the table so that the fixture floats on the film and can be moved about easily on the table. Cooperating elements of pin and socket locating devices on the fixture and table provide for the loca- tion of the fixture in predetermined positions on the table and clamps are provided to clamp the fixture in located positions on the table. The locating devices on the table bear a pre- determined relation to the work axis of the machine tool, a spindle axis, for example, and can, therefore, be depended on to locate the fixture in predetermined accurate positions for machining. A work member located in the fixture can, thus, be positioned rapidly for the machining of various regions thereof.
290323
Bergman Raymond A.
Macrae & Co.
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