Patent EA-002249-B1 (EA)
Title: Multistage metal-forming machine tool having tool combination blocks
Inventor: ZANZERL HERMANN
IPC: B30B15/02
Filed: 1999-03-22
Abstract: 1. A multistage metal-forming machine tool comprising a first tool combination block (3) arranged on a fixed machine body (1) and a second tool combination block (4) arranged on a pressing saddle (2) adapted for alternate/reciprocal motion in the direction of said first tool combination block (3), wherein said first (3) and said second (4) tool combination block comprise interacting tool individual blocks (35,45), characterized in that at least one of said tool combination blocks (3,4) comprises at least one tightening tab (31,41) by which it is hung from above directly or indirectly on said fixed machine body (1) or on said pressing saddle(2) via a tightening cam (52,62) arranged directly or indirectly on said body (1) or on said pressing saddle (2), wherein said tightening tab (31,41) and said tightening cam (52,62) are designed so that due to their own weight of said tool combination block (3,4) and/or a tightening force acting in a vertical direction toward said tool combination block (3,4) said tightening force effects an elastic tensioning between said tool combination block (3,4) and said body (1) or said pressing saddle (2) in a horizontal direction. 2. The multistage metal-forming machine tool according to claim 1, characterized in that at least one tightening tab (31,41) is arranged in the upper end of a supporting plate of said tool combination block (3,4) and a). either in a lower end of said supporting plate of said tool combination block (3,4) at least one an additional tightening tab is arranged which is hung from above directly or indirectly on said fixed machine body (1) or on said pressing saddle(2) via an additional tightening cam; b). or either in a lower end of said supporting plate of said tool combination block (3,4) at least one an additional projecting downward tightening tab (322,422) is arranged and inserted into a projecting upward tightening tab which is arranged directly or indirectly on the body (1) or on the pressing saddle. 3. The multistage metal-forming machine tool according to claim 1 or 2, characterized in that said tightening tab(s) (31,41,51,61) and/or tightening cam(s) (52,62,322,422) have an inclined to a vertical abutting surface for a respective said tightening tab(s) (31,41,51.61) and/or tightening cam(s) (52,62,322,422), said surface is preferably curved so that when effecting a downward vertical effort on said tool combination block (3,4), said tightening tab(s) (31,41,51.61) are elastically bent outward to the respective or tightening cam(s) (52,62,322,422). 4. The multistage metal-forming machine tool according to claims 1 to 3, characterized in that an apron (5,6) is screwed onto said body (1) or onto said pressing saddle (2), said apron (6) comprises tightening cams (52,62) and, if necessary, said tightening tab(s) (51,61) arranged from the side of said body (1) or said pressing saddle (2). 5. The multistage metal-forming machine tool according to claims 1 to 4, characterized in that at least one tool combination block (3,4) comprises a supporting plate (32,42) on which tightening cams (52,62) and, if necessary, said tightening tab(s) (51,61) are arranged from the side of said body (1) or said pressing saddle (2). 6. The multistage metal-forming machine tool according to claims 1 to 5, characterized in that several tightening tabs (31,41) are arranged at a distance from each other in the upper end of at least one of said tool combination blocks (3,4), and/or the downward-directed tightening cams (322,422) are arranged at a distance from each other in the lower end of said tool combination block (3,4). 7. The multistage metal-forming machine tool according to claims 1 to 6, characterized in that the machine comprises at least one tightening device (7,8) which generates a tightening force acting vertically in the direction of one of said tool combination blocks (3,4), wherein said tightening device (7,8) is positioned beneath said tool combination block (3,4) and comprises a hydraulically-driven tightening lever (71,81). 8. The multistage metal-forming machine tool according to claims 1 to 7, characterized in that the machine comprises at least one separating means (9,10) via which a separating force is generated acting vertically on one of said tool combination blocks (3,4), wherein said separating means (9,10) is positioned beneath said tool combination block (3,4) and comprises a hydraulically-driven tightening lever (71,81). 9. The multistage metal-forming machine tool according to claims 1 to 8, characterized in that said tool combination block (3,4) with said tightening tabs (31,41) or, at least, one of said tool combination blocks (3,4) with said tightening tabs (31,41) comprises, at least, one thrust (33,43) contiguous to from top a thrust surface 521,621) outside of said tool combination block (3,4) for its exact vertical positioning. 10. The multistage metal-forming machine tool according to claims 1 to 8, characterized in that said tool combination block (3,4) with said tightening tabs (31,41) or, at least, one of said tool combination blocks (3,4) with said tightening tabs (31,41) comprises a centering means, in particular centering journal (11) or a centering casing (14) which upon inserting said tool combination block (3,4) interacts with a counter element outside said tool combination block (3,4) in particular with said centering casing (11) or said centering journal (13) for its horizontal centering. 11. A tool combination block (3,4) for a multistage metal-forming machine tool according to claims 1 to 10 with the fixed body and the pressing saddle adapted for alternate/reciprocal motion comprising, at least, two tool individual blocks (35,45), characterized in that said tool combination block (3,4) comprises at least one tightening tab (31,41) by which it is hung from above directly or indirectly on said fixed machine body (1) or on said pressing saddle(2) via a tightening cam (52,62) arranged directly or indirectly on said body (1) or on said pressing saddle (2).