DE19908835A1 - Press tool for forming of metal panels has press ram consisting of several modular segments, screwed to top die and press table - Google Patents

Abstract

The press tool has relatively moveable bottom die (4) and top die (3), with bottom die fastened to a press ram (2) on a press table (1). The press ram consists of at least one segment (7), which is detachably connected to the top die and the press table via screw connections. An eccentric is turnably fastened to one or both sides of the ram segment. The segments are shaped, so that at least two of them can be combined to make a rectangle.

Description

The present invention relates to a press tool for forming sheet metal according to the preamble of claim 1.

Press tools of the aforementioned type are used for forming sheet metal parts used. For inserting a sheet to be formed between the male and These are to be removed from each other to such an extent that an undeformed, usually even sheet metal should be placed between them. To do this, the stroke must be greater than the component height measured in the direction of deformation. The stamp of the patrix must therefore also have this minimum height. Press stamps are made according to the Technology made in one or two parts, the male part being removable or non-removable with the Press stamp is connected. The press stamp itself is not in the shape involved, therefore this is surmounted by the patrix on all sides. Disadvantage of this The design is such that there is a separate press stamp with patrix for each tool. With large tools, for example in the automotive industry, this brings high Warehousing costs.

The present invention is based on the problem of a press tool create that is cheaper to manufacture and cheaper to store.

This problem is solved by a press tool according to claim 1. According to the invention it is provided that the stamp consists of at least one Stamp segment exists, which is detachable with the male and detachable with the Press table is connectable. That or the stamp segments can after a Modular system for all tools. It is therefore only a limited one Keep number of stamp segments.

In a preferred embodiment it is provided that the stamp segment with the Male is screwable. The attachment is therefore easily detachable and high Stresses grown.  

In a preferred embodiment it is further provided that the or Stamp segments can be screwed to the press table. This can be the usual Fastening using T-slots and slot nuts can still be used.

In the preferred embodiment it is further provided that at least one Side of the stamp segments a rotatable about the longitudinal axis of the stamp segment Eccentric is arranged. By turning the eccentric the stamp segments are can be connected tension-free with patrix and press table.

It is advantageous if an eccentric can be rotated on both sides of the stamp segments is arranged. These measures simplify the screwing of the stamp segments with patrix or press table.

It is particularly advantageous if the stamp segments have a square, have a triangular, rectangular or diamond-shaped cross section. The Stamp segments can thus be made into almost any kind of modular system Base areas are put together.

It is particularly advantageous if the stamp segments have a cross section, which enables that at least two stamp segments with similar or different cross-section can be assembled into a rectangle because of this A base area with different combinations of stamp segments can be put together.

The present invention is described in more detail below using an exemplary embodiment and with reference to the accompanying drawings. Here 1 shows a section through a press ram.

Fig. 2 shows a press ram in the plan view;

FIG. 3 shows the spatial view of an example of a die segment;

Fig. 4 embodiments for stamp segments.

First, reference is made to FIG. 1. A movable press table 1 carries a stamp 2 . The press table can be moved in the direction of the double arrow 5 . The stamp 2 is formed in the region of the side facing away from the press table 1 as a male part 3 which is to be brought into engagement with a female part 4 . The height of the stamp 2 corresponds at least to the stroke of the press table 1 . Between the z. B. designed as a cast male 3 , the stamp 2 is constructed from stamp segments 7 . The male part 3 projects beyond the stamp segments 7 on all sides.

The arrangement of the die segments 7 between the press table 1 and the male part 3 is explained with reference to FIG. 2. Several stamp segments 7 , each of different cross-sectional shapes, for. B. square, rectangular, triangular, are so arranged on the press table 1 that they are covered by the male 3 . The die segments 7 are screwed onto both the press table 1 and the male part 3 . Each stamp segment 7 has an eccentric 9 for this purpose, see FIG. 3, which is arranged on the end face of the stamp segment 7 so as to be rotatable about the longitudinal axis. On the eccentric 9 , a fastening screw 10 is arranged off-center, with the aid of which the stamp segment 7 in conventional guide grooves 8 by means of z. B. slot nuts or nuts can be screwed. The attachment of the stamp segment 7 to the male part 3 follows accordingly, guide grooves are also arranged in this.

Fig. 4 shows an embodiment of a modular system for stamp segments 7. The cross section of an arrangement of a plurality of stamp segments 7 is shown , which are joined together to form a rectangle. Starting from a basic segment 11 with a triangular cross section, there are stamp segments 12 , 13 , 14 and 15 , each of which is an integral multiple of the length of the isosceles sides of the basic segment 11 . Two basic segments 11 can thus be assembled to form an element 12 with a square cross section, two or more of the square stamp segments 12 can be assembled into rectangular stamp segments 13 , 14 and 15 . Correspondingly, z. B. diamond-shaped stamp segments conceivable.

REFERENCE SIGN LIST

1

Press table

2nd

stamp

3rd

Patrix

4th

die

5

Directional arrow

7

Stamp segments

8th

Guide groove

9

eccentric

10th

Fastening screw

11

triangular base segment

12th

,

13

,

14

,

15

Stamp segments

Claims (7)

1. Press tool for forming sheet metal, consisting of a female mold ( 4 ) and a male mold ( 3 ), male ( 3 ) and female mold ( 4 ) being movable relative to each other and one of the pressing tools ( 4 ) on a stamp ( 2 ) is arranged, which can be fastened on a press table ( 1 ), characterized in that the stamp ( 2 ) consists of at least one stamp segment ( 7 ) which can be detachably connected to the press tool ( 3 ) and detachably to the press table ( 1 ). 2. Press tool according to claim 1, characterized in that the stamp segment ( 7 ) with the pressing tool, in particular the male part ( 3 ) can be screwed. 3. Press tool according to one of claims 1 or 2, characterized in that the or the stamp segment (s) with the press table ( 1 ) can be screwed. 4. Press tool according to one of claims 1 to 3, characterized in that on at least one side of the stamp segments ( 7 ) around the longitudinal axis of the stamp segment ( 7 ) rotatable eccentric ( 9 ) is arranged. 5. Press tool according to claim 4, characterized in that an eccentric ( 9 ) is rotatably arranged on both sides of the stamp segments ( 7 ). 6. Press tool according to one of claims 1 to 5, characterized in that the stamp segment (s) is square, triangular, rectangular or have a diamond-shaped cross-section. 7. Press tool according to one of claims 1 to 6, characterized in that the stamp segments ( 7 ) have a cross section which makes it possible to assemble at least two stamp segments ( 7 ) with the same or different cross section to form a rectangle.