EP 0022155 B1 19821027 - METHOD AND DEVICE FOR THE MANUFACTURE OF BEVEL WHEELS
Title (en)
METHOD AND DEVICE FOR THE MANUFACTURE OF BEVEL WHEELS
Publication
Application
Priority
DE 2927135 A 19790705
Abstract (en)
[origin: US4590782A] A bevel gear is made by means of a die, a punch, and two concentrical counterpunches, one having a particularly contoured extension. A cylindrical blank, having a diameter not larger than the smallest bevel gear root circle, is inserted in the die; a portion is held by one counterpunch but reverse-extruded in part into the gap between that counterpunch and the advancing punch. A portion of the blank inserted into the interior of the die flows concurrently radially into the small-diameter portion of the die cavity. Subsequently, the reverse-extruded, tubular portion is forced back in parts by the second counterpunch, acting in the gap, to fill the large-diameter portion of the cavity. A tubular shaft extension may remain on the gear.
IPC 1-7
IPC 8 full level
B21K 1/30 (2006.01)
CPC (source: EP US)
B21K 1/30 (2013.01 - EP US)
Designated contracting state (EPC)
FR GB IT SE
DOCDB simple family (publication)
DE 2927135 B1 19800911; EP 0022155 A1 19810114; EP 0022155 B1 19821027; US 4590782 A 19860527
DOCDB simple family (application)
DE 2927135 A 19790705; EP 80102324 A 19800430; US 16579780 A 19800703