DE1252515B - - Google Patents

Description

GERMAN

PATENT OFFICE

PATENT LETTERING German cl .: 491-12

Number: 1252 515

File number: A 36708 I b / 491 Filing date: February 11, 1961 Opened on: October 19, 1967 Issue date: June 6, 1968 The patent specification corresponds to the patent specification

The invention relates to a method of manufacturing tools for punch cutting.

In this field, in particular, there is a method for producing multi-part cutting plates Cutting and punching tools known in which the cutting plate is hardened in the pre-machined state, then an auxiliary plate made of unhardened soft steel or metal, for example through Solder on, firmly applied, the cut pressed into this plate, the cutting plate exactly after the pressure is finish-sanded and the auxiliary plate is removed.

The object of the invention is to provide an improved method for producing punch cutting tools to create, with the manufacture of a punch and an ejector in different Operations that do not require great manual dexterity are divided up, so that the production of this type of tool is both accelerated and cheaper and here * ° but a high, required accuracy can be maintained.

The invention relates to a method for producing tools for punch cutting, which from a die, a punch and an ejector guided in the die with the same profile as the stamp exist and their stamp and ejector are aligned with one another and have the same diameter Have bores as guides for punch, the profile of the finished die in a A disc made of soft material, soldered onto a stamp blank, is embossed, the stamp blank after this embossing, which serves as a teaching, finished and then the disk is unsoldered again will. The method is characterized in that the material for the punch and the ejector one behind the other containing stamp blank after soldering and embossing the Disk is separated into two parts, which later result in the punch and the ejector that the one with the disc provided part is provided with holes after placing it on the die and that the still undrilled part after connecting, e.g. B. Soldering together, with the drilled part and after removing from the die, using the holes as guides.

The method according to the invention results in technical progress that despite compliance with a high accuracy in the manufacture of the tool parts and relatively little trained workers are able to manufacture such tool parts.

The method of the present invention is as follows Method of making tools Patented for:

Aktiebolaget Atvidaberg-Facit,
Atvidaberg (Sweden) I.
Representative:

Dipl.-Ing. W. Cohausz

and Dipl.-Ing. W. Florack, patent attorneys,

Düsseldorf, Schumannstr. 97

Named as inventor:
Rolf Erik Anneren, Atvidaberg;
Johan Bertil Gustafsson,
Ovansjö, Björsäter (Sweden)

Claimed priority: Sweden of February 15, 1960 (1510)

described in more detail using an example of the manufacture of a tool and the drawings.

In the F i g. 1 to 15 are the different operations in the manufacture of a stamp and an ejector shown.

F i g. 1 shows schematically a cross section of a finished die 1, which is in the upper part 2 of a column stand is fixed. The die is provided with two guide holes 3.

F i g. 2 shows a stamp blank 5 in a perspective view, which is on the lower part 4 of the Column stand is attached. This stamp blank is only roughly machined on the flanges and on the Above and underside ground flat. Furthermore, it is drilled together with the lower part of the column stand and with pins 6 or the like. In the correct position fixed.

The underside of the die 1 is then colored, after which the profile on the top of the punch blank is transferred by pressing the tool halves together. The thus obtained The first record of the profile of the punch is shown in FIG. 2 shown with an edge 7. After that, will the punch blank is unscrewed and planed with a grinding allowance to the drawn profile (s. Fig. 3), in which the planed away material is marked with a dashed profile 8.

809 563/196

Claims (1)

Then a disc 9 of 1.5 to 2 mm thickness is made with a profile that the planed Stamp blank protrudes slightly. This disc 9 is placed on the surface of the die blank which has been ground flat soldered or otherwise attached (Fig. 4). The stamp blank 5 with the soldered Disk 9 is attached again to the lower part 4 of the column stand and pinned, after which the punch blank and the die 1 are pressed together with the aid of a hydraulic press or the like the, so that an impression in the disc 9 at a depth of about 0.5 to 0.8 mm (Fig. 5). The next step according to FIG. 6 consists in that the surface of the disc 9 is carefully ground flat is, so that any burrs of the embossed profile are removed, but without the profile will be changed. The punch blank is then cut into two parts (Fig. 7), after which the cut surfaces are ground flat will. Of the. the upper part is designated by 10 and the lower part by 11. The upper part 2 of the column stand with the die 1 is turned over and placed on the table. one Jig drilling machine placed (Fig. 8). The Matrizen- as profile is based on the longitudinal and transverse scales of the Align the table, starting with the two guide holes 3. Then the upper part 10 of the punch blank with the disk 9 inserted into the die profile. This is followed by 3 " Measure and drill all the holes 12 in the upper part 10, which will later result in the ejector. the Holes 12 are guides for punch punches (Fig. 8). After these holes have been drilled, the upper part 10 remains in the die profile. Of the Part 11 of the stamp blank, which later results in the stamp, is again on the lower part of the column stand fastened with pins, after which the two tool halves 10 and 11 are pressed together and soldered together or otherwise attached (Fig. 9). The inner part of the column stand with the parts 10 and 11 now joined together is removed and vice versa, after which the holes are drilled in the punch 11 with the ejector 10 as a drilling jig (Fig. 10). After removing the disc 9, the punch 11 and the ejector 10 are hardened. Then will Stamp and ejector ground flat on both sides (Fig. 11). The disc 9, the ejector 10 and the punch 11 are re-fitted together and with the aid fixed by two cylindrical pins or in some other way, after which they are soldered together (Fig. 12). The ejector 10 and the punch 11 are then profile-ground, the disk 9 serves as a teaching (Fig. 13). The disc 9 is removed and the punch and ejector are separated (Fig. 14). The clearance required for the punch in relation to the die is then made by pickling or on get other way. Fig. 15 shows a finished tool installed in a column stand and clearly for use. The method according to the invention for producing punch cutting tools is only very moderate Demands on the manual dexterity of the worker. The process enables great precision between punch and die both in terms of the profile and the holes drilled in it. In addition, absolute parallelism is achieved between the cutting surfaces of the punch as well as between the sliding surfaces of the ejector against the die. The method allows, among other things, that simpler labor for the manufacture of the tool can be used, and also the manufacturing time is significantly shortened, which is lower Brings about costs and significantly reduced delivery times. Claim: Process for the production of tools for punch cutting, which consist of a die, a Punch and an ejector guided in the die with the same profile as the punch exist and their punches and ejectors are aligned, holes of the same diameter have as guides for punch, the profile of the finished die in a A stamp blank is stamped on a disc made of soft material, the stamp blank after this impression, which serves as a teaching, finished and then the disc again is unsoldered, characterized in that the material for the punch (11) and the ejector (10) lie one behind the other containing stamp blank (5) after soldering and embossing the disc (9) in two Parts is separated, which later result in the stamp (11) and the ejector (10) that with the disc (9) provided part (10) after placing on the die (1) with bores (12) is provided and that the still undrilled part (11) after connecting, for. B. soldering together, with the drilled part (10) and after removal from the die (1), using the bores (12) as guides, is drilled. Considered publications: German Patent No. 911247; Ernst Bosse, "From the toolmaker's practice in the stamping shop", Carl Hauser-Verlag, Munich, 1952, p. 44. In addition 3 sheets of drawings 109 € 71/240 10.67 O Bundcsdruckeret Berlin