Cutting – Tool engages work during dwell of intermittent workfeed – Work moved solely by movable abutment
Patent
1976-08-02
1977-12-20
Abercrombie, Willie G.
Cutting
Tool engages work during dwell of intermittent workfeed
Work moved solely by movable abutment
83247, 83411A, 83437, 83468, B26D 520, B26D 706
Patent
active
040634825
ABSTRACT:
The present invention relates to an indexing mechanism for stepwise advancing a workpiece relative to a cutting tool of a machine tool, to enable slices or wafers of predetermined thickness to be cut from the workpiece. The indexing mechanism comprises first and second slide blocks slidable in a slideway in a slide block carrier of the machine tool. The first block carries the workpiece and the second block carries a double-acting index actuator which interconnects the two blocks and is operable to displace the blocks alternately toward and away from each other, the extent of said displacement determining the indexing stroke of the mechanism. The index actuator is provided with an adjustable end stop for adjusting the indexing stroke. The blocks are provided with clamp actuators which positively and sequentially clamp the blocks to the carrier, so that the first block is displaced away from the second block as the latter is immobilized, and the second block is displaced towards the first block as the latter is immobilized. The blocks are also provided with springs which, upon release of the clamp actuator, clamp the blocks to the carrier with a reduced clamping force sufficient to resists unintentional displacement of the blocks.
REFERENCES:
patent: 2673611 (1954-03-01), Seybold
patent: 2849066 (1958-08-01), Michelet et al.
patent: 3583268 (1971-06-01), Scribner
Pizzey Anthony Reginald
Waters Alan James
Abercrombie Willie G.
Caplin Engineering Company Limited
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