Combined stamp for hot stamping

 

(57) Abstract:

The inventive stamp for hot stamping is a punch and die. The plug contains the core and the housing in the cavity of which the outer surface of the core is freely mounted package inserts. The yoke consists of one or more parts made telescopically. The upper shell at its bottom end has a diametrically located lower ledge, then followed by the liner groove under the ledge, and last the liner cavity with centering chamfer. This cavity dimensions correspond to the dimensions of the steps specified part. To rotate the top of the liner with respect to subsequent there is a handle, and the upper part of the shroud ring groove under the handle. The matrix has a cavity for forming the further stages of the details. For removal of the workpiece after forming the matrix is supplied with the stripper vane type and ejector. Therefore, on the side surface of the lower insert has a groove under the gate. 4 C.p. f-crystals, 10 ill.

The invention relates to the field of metal forming, namely to the combined dies when hot forging and can be used in engineering in the manufacture of bilateral stepped cylindrical holding mounted on the press table matrix with the ejector, posted with the possibility of reciprocating movement in the direction of the axis of the pressure and mounted coaxially her and rigidly associated with traverse the punch press [1]

The disadvantages of this design of the stamp are the limited range of used blanks, economiccost the process of obtaining products due to possible marriage, and the need for machining.

The technical result achieved by the invention consists in the expansion of the product range used blanks, the reduction of the probability of marriage and reduce consumption of metal machining.

This is achieved by stamping hot stamping, containing a mounted on the table of the press die with an ejector placed with the possibility of reciprocating movement in the direction of the axis of pressure, is installed coaxially her and is rigidly connected to traverse the punch press, which is made in the form of the core and the shell, consisting of one or more telescopically associated parts in the cavity which on the outer surface of the core package installed liners interoperable end surfaces, the first liner on sweeze the groove under the ledge, and the last liner cavity with centering chamfer. On the side surface of the punch holder is made annular groove in the handle of the rotation of the upper liner. On the side surface of the lower liner punch made a groove in the damper puller. Liners made in the form of flanged bushings. At the end of the matrix is fixed stripper vane type.

The invention is illustrated by drawings, there is shown: in Fig. 1 - the original and the resulting workpiece in a die; Fig. 2 stamp new design; Fig. 3, the cage Assembly of Fig. 4 the upper part of the casing; Fig. 5 - the lower part of the casing; Fig. 6 the upper shell of Fig. 7 middle liner of Fig. 8 the lower shell of Fig. 9 stamp when the injection; Fig. 10 stamp when flashing.

The stamp contains the punch and die (see Fig. 2). Punch through the holder 1 is attached to the top plate 2 of the stamp, and the latter to traverse the press. The punch consists of a core 3 and the shell, and the latter of the two cylindrical parts: the upper 4 and lower 5 connected between a flange protrusions (see Fig. 3). On the side surface of the upper part 4 of the clip on the arc 90omade the ring groove of the rotation of the handle 6 (see Fig. 2 and 4). The top and bottom of the holder are movable relative to each other in oevel and freely planted liners, made in the form of flanged bushings, the upper shell 7, the average liner 8 and the lower shell 9 (see Fig. 2). The upper shell 7 on the bottom has a diametrically located protrusion B (see Fig. 6), middle liner on the upper end of the slot In under the lip of the liner 7 (see Fig. 7). To the side surface of the liner 7 is attached the arm 6 to rotate it 90o(see Fig. 2). The lower shell 9 has an internal cavity, the size corresponding to the first stage of details, with the centering chamfer G, and on the side surface of the groove D for entry puller 10 gate type (see Fig. 2 and 8). The matrix 11 is fixed on the table of the press 12 and has a cavity corresponding to the subsequent steps of the details. For better removal of parts applied puller 10 gate type and the ejector 13 (see Fig. 2).

Stamp works as follows.

Heated source procurement, which is a circle with a diameter as close to the specified diameter of the first level of detail, is mounted in the cavity of the matrix 11 (see Fig. 9). Then the press slide with the punch moves down and the lower shell 9 is included in the cavity of the matrix 11. When the initial occurrence of the liner 9 in the cavity of the matrix 11 is the centering of the original piece on the facet, With dalneishee of the original piece and is embedded in it. There is a process zadavki, which is the initial displacement of the metal. Displaced metal fills the cavity of the liner 9, and generates a first level of detail. When the injection of the upper and middle ear in the work is not involved. They are immovable relative to each other as the upper shell 7 with its protrusion abuts against the end face of the subsequent liner 8. Then removed the working pressure and due to the backlash of the liner 7 is rotated by the handle 6 on the 90orelative to the liner 8 (see Fig. 10). As a result, the protrusion of the upper bearing 7 is placed over the groove of the liner 8. When restarting the operating pressure is further movement of the core plug already due to the motion of the upper liner 7 relative to the liner 8, as the first insert your boss comes into the groove of the second liner. The upper part of the casing 4 is moved down, sliding on the surface of the lower part of the shroud 5. There is a further implementation of the core 3 in the body of the workpiece is in the process of firmware, which superseded the metal fills the cavity of the matrix, forming the subsequent stages of the details.

Thus, the application of the stamp allows you to generate double-sided stepped form, series instrument, metal and electricity.

1. Combined stamp for hot stamping, containing a mounted on the table of the press die with an ejector placed with the possibility of reciprocating movement in the direction of the axis of pressure, and mounted coaxially with her and rigidly connected with the head plate of the press punch, wherein the punch is made in the form of the core and the shell, consisting of one or more telescopically associated parts in the cavity of which the outer surface of the core package installed liners interoperable end surfaces, the first liner at its lower end has a diametrically located protrusion, the second liner at its upper end, a groove in the ledge, and the last liner cavity with centering chamfer.

2. Stamp on p. 1, characterized in that on the side surface of the punch holder is made annular groove in the handle of the rotation of the upper liner.

3. Stamp on p. 1, characterized in that on the side surface of the lower liner punch made a groove in the damper puller.

4. Stamp on p. 1, characterized in that the ear plug is made in the form of flanged bushings.

5. Stamp under item 1, the

 

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FIELD: metal working.

SUBSTANCE: hard alloy matrix has casing, bushing pressed in the case and hard alloy insertion. Bushing has multifaced hole. Hard alloy insertion is composed by several sections made in form of trapezoidal-section prisms which have cut angles at their non-working edges. Number of sections corresponds to number of faces of item to be headed. Cuts of angles are made symmetrically to faces of working edge. Slits are made in several places of multifaced hole bushing at the ponts where faces cross each other.

EFFECT: improved resistance of matrix; simplified assembly.

3 cl, 1 dwg

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