Metal deforming – By use of tool acting during relative rotation between tool... – Work-hammering tool
Patent
1986-02-12
1987-12-29
Larson, Lowell A.
Metal deforming
By use of tool acting during relative rotation between tool...
Work-hammering tool
72370, 72443, 72466, B21D 310, B21J 732, B21J 746
Patent
active
047152044
ABSTRACT:
An operating head (24) carrying a hammering element (28) is introduced into the interior of the workpiece at a position where the workpiece, as measured by a measuring instrument (49,50) shows maximum deviation from the axis of rotation of the rotation symmetrical body. The hammering element is controlled to hammer against the inside at a rate which depends on the distance of deflection and/or the position thereof, during rotation, or longitudinal movement of the workpiece with respect to the operating head, for example by controlling a potentiometer (19) by an eccentric control disk (16) which has its maximum eccentric deflection of position in line with the maximum eccentricity, or deflection of the workpiece (7) from the axis of rotation. The apparatus can also be used to remove dents and the like, by hammering against the dent and longitudinally shifting the workpiece with respect to the hammering element. Preferably, the outside of the wall is resiliently supported by a counter element (39,40), the hammering element being operated by a cam (26) under constant spring force.
REFERENCES:
patent: 1079065 (1913-11-01), Pilston
patent: 1374877 (1921-04-01), Carlson
patent: 1790515 (1931-01-01), Trumble
patent: 2071281 (1937-02-01), George
patent: 2205784 (1940-06-01), Arutunoff
patent: 2333640 (1943-11-01), Clark
patent: 2818102 (1957-12-01), Seifferle
patent: 3837203 (1974-09-01), Ruth
patent: 3866447 (1975-02-01), Ritchie
patent: 4416130 (1983-11-01), Judge, Jr.
Larson Lowell A.
M.A.N. - Roland Druckmaschinen Aktiengesellschaft
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