Cutting – Tool engages work during dwell of intermittent workfeed – Work-sensing means to initiate tool feed
Patent
1982-11-08
1984-03-27
Yost, Frank T.
Cutting
Tool engages work during dwell of intermittent workfeed
Work-sensing means to initiate tool feed
83167, 83176, 83444, 83468, 83580, 83694, B26D 538
Patent
active
044386710
ABSTRACT:
Slot wedges are cut from lengths of wedge stock having a generally U-shaped transverse cross-section by air-operated shearing means triggered when an end of the wedge stock contacts a paddle mounted with a paddle-operated electrical switch on a slide assembly movable longitudinally along the path of feed of wedge stock past the shearing means. The shearing means comprises a movable blade having an external symmetrical U-shaped cutting edge cooperating with a fixed blade having an internal symmetrical U-shaped cutting edge with a rounded end and straight, parallel sides. A guide dial with multiple selectable apertures is used to center the wedge stock on the shearing means. The guide dial is aided by an upward protrusion which projects between the legs of the wedge stock cross-section to keep the wedge stock perpendicular to the cutting plane. The movable blade is constantly urged against the fixed blade by a spring-loaded ball bearing, and is actuated by an air cylinder piston having a flat surface transverse to the direction of blade movement so that the blade is permitted to move laterally as wear takes place. The paddle pre-stresses the paddle-operated switch so that only a very slight movement of the wedge stock is needed to trigger the shearing means. The slidable switch and paddle assembly carries with it an overhanging shield which prevents the cut wedges from flying upwardly regardless of their size.
REFERENCES:
patent: 2581960 (1952-01-01), Kronenwetter
patent: 2707026 (1955-04-01), Hoern
patent: 3082655 (1963-03-01), Voigt
patent: 3220294 (1965-11-01), Bradburn, Sr.
patent: 3777603 (1973-12-01), Tracy
patent: 3785233 (1974-01-01), Robinson
Crothers James L.
Weirich Stephen
Lenni Products, Inc.
Yost Frank T.
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