Cutting – Means to drive or to guide tool – Means to change datum plane of tool or tool presser stroke
Patent
1979-07-31
1981-05-05
Meister, J. M.
Cutting
Means to drive or to guide tool
Means to change datum plane of tool or tool presser stroke
83552, 83694, B23D 1504, B23D 2300
Patent
active
042651565
ABSTRACT:
A shearing assembly and method of effecting shearing utilizing the same. Any tendency of further the edges of steel stock being cut to roll is eliminated by providing a male die cutting blade (which cooperates with a female die) having a pair of shelf members, one associated with each cutting blade side face, for engaging the edge of material being sheared during the shearing operation. An actuator element is operatively connected to the male die for moving the cutting blade in a given linear direction, the rolling preventing being accomplished by providing a control structure for positively controlling the length of the stroke of the actuator element and attached cutting blades so that at the limit of travel of the cutting blade in the given linear direction the shelf members are spaced apart from the female die a distance corresponding to the thickness of material being sheared. A plurality of die groups are mounted on a rotating wheel. The wheel has an open side and any of the materials severed during cutting passes through a chute to the open wheel side so that it moves away from interfering engagement with the male and female dies. The male and female die groups are readily releasably mounted to the wheel, and rotate into operative engagement with the actuating element. The male dies will not become detached from the male-female die groups during rotation of the wheel because of particular stop members associated therewith.
REFERENCES:
patent: 735166 (1903-08-01), Smith
patent: 1033527 (1912-07-01), Bradshaw
patent: 2039847 (1936-05-01), Howland-Shearman
patent: 2439029 (1948-04-01), Welk
patent: 2884063 (1959-04-01), Stover
patent: 3227022 (1966-01-01), Evans et al.
patent: 3362272 (1968-01-01), Grosse
patent: 3590674 (1971-07-01), Maeda
patent: 3651566 (1972-03-01), Kincaid et al.
patent: 3750509 (1973-08-01), Kruse
Meister J. M.
Potomac Applied Mechanics, Inc.
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