公开(公告)号：EP0022338A1

公开(公告)日：1981-01-14

申请号：EP80302166.6

申请日：1980-06-27

申请人： ANDERSON-COOK, INC.

发明人： Jungesjo, Harald N.

IPC分类号： B21H5/02

CPC分类号： B21H5/027

摘要： A forming machine (10) is disclosed as including a rotary drive mechanism (30) that provides accurate control of the degree to which forming is performed. The drive mechanism (30) includes a pair of drive members (34) mounted for movement with a pair of elongated dies that are preferably embodied as die racks (22,24) mounted on lower and upper bases (12,14) of the machine (10). A toothed drive gear (32) is meshed with drive teeth (52) on each of the drive members (34) and is rotatably driven by a drive spindle to thereby move the drive members (34) and hence the dies (22,24) in order to form a workpiece mounted between the dies (22,24). The drive mechanism (30) has particular utility in a machine for forming a thin-walled annular sleeve of a workpiece mounted on a toothed mandrel (38) between the dies (22,24). An automatic loader (40) is preferably utilized to mount the workpiece on the mandrel (38) such that movement of the dies (22,24) engages the die and mandrel teeth (124) with the workpiece sleeve therebetween in order to provide the forming.

公开(公告)号：EP0022337A1

公开(公告)日：1981-01-14

申请号：EP80302165.8

申请日：1980-06-27

申请人： ANDERSON-COOK, INC.

发明人： Jungesjo, Harald N.

IPC分类号： B21H8/02 ,  B21K5/20 ,  B23P15/24

CPC分类号： B23P15/406 ,  B21H5/00 ,  B23F1/06

摘要： A method and apparatus for making rotary die racks (12) having an elongated shape including a partially circular forming face (16) of less than 180° and a flat mounting surface (26) that faces in the opposite direction as the forming face (16). Cast metal blanks of the die racks are secured to a rotatable spindle (10) in a side-by-side relationship to turn the forming faces (16). Forming projections, i.e. teeth that extend parallel to the axis of the forming face, are then cut in the turned face (16). Heat treating of the die racks (12) is then performed before mounting thereof on a fixture to perform a finish grinding of the teeth. The spindle preferably includes a spindle member and a central shaft on which the spindle member is mounted for rotation. The fixture includes a pair of spaced end plates and a bed that extends between the end plates and has a stop and an adjustable positionerforclamping the die racks.