Patent EA-003987-B1 (EA)
Title: Forming machine with a rotating wedged disc
Inventor: MULLER FRANCOIS
IPC: B21J9/02
Filed: 2001-07-17
Abstract: 1. A forming machine comprising at least one forming station (91, 92) having a punch and a die as tools and a device for setting the axial position of one of the two tools, the device comprising an adjusting wedge (1) having a bearing surface (11) which bears against a parent body (2), wherein the adjusting wedge is a rotary wedge disk (1) which is rotatable about a rotation axis (13) and which has, the bearing surface (11) on one disk side and an inclined plane (12) on the other disk side, and the device also comprises a pressure piece (3; 103; 203; 303) having an end face (31; 131; 231; 331) which bears against the inclined plane (12) in such a way that it is displaced relative to the rotary wedge disk (1) eccentrically to the rotation axis (13) when the rotary wedge disk (1) is rotated, the axial distance between pressure piece (3; 103; 203; 303) and parent body (2) changing in the process. 2. The forming machine as claimed in claim 1, wherein the bearing surface (11) is circular and rotates on the spot on the parent body (2) when the rotary wedge disk (1) is rotated. 3. The forming machine as claimed in claim 1 or 2, wherein there is arranged on the rotary wedge disk (1) a toothed rim (14), via which said rotary wedge disk (1) can be rotated, there preferably being means for arresting the rotary wedge disk (1) in each adjustable position. 4. The forming machine as claimed in one of claims 1 to 3, wherein the angle of inclination of the inclined plane (12) relative to the bearing surface (11) is 10 degree at most. 5. The forming machine as claimed in one of claims 1 to 4, wherein the pressure piece (3; 103; 203; 303) comprises a rotatable part (30; 130; 230; 330) having the end face (31; 131; 231; 331) and a rotationally fixed pressure part (32; 132; 232; 332) connected thereto via first sliding surfaces (33, 34; 133, 134; 233, 234; 333, 334). 6. The forming machine as claimed in claim 5, wherein the first sliding surfaces (133, 134) have the form of a convex spherical-surface section and, respectively, a concave spherical-surface section complementary thereto. 7. The forming machine as claimed in claim 5, wherein the rotary part (230; 330) comprises an end-face part (235; 335) having the end face (231; 331) and an articulation part (236; 336) connected thereto via second sliding surfaces (237, 238; 337, 338) and having one of the first sliding surfaces (234; 334). 8. The forming machine as claimed in claim 7, wherein the second sliding surfaces (237, 238; 337, 338) have the form of a convex cylinder-envelope or spherical-surface section and, respectively, a concave cylinder-envelope or spherical-surface section complementary thereto. 9. The forming machine as claimed in one of claims 5 to 8, wherein it has means for rotating the rotary part (30; 130) or, if present, the articulation part (236; 336) coupled to the rotary wedge disk (1), these means preferably comprising a toothed rim (39; 139; 239; 339) which is arranged on the rotary part (30; 130) or, if present, on the articulation part (236; 336). 10. The forming machine as claimed in one of claims to 9, wherein the pressure piece (3; 103; 203; 303) and e rotary wedge disk (1) have a through-hole (40) and/or curved through-slot (15) for an ejector (4).