Integral throwing die for forging hammer

Abstract

The utility model provides an integral type casting die for a forging hammer, which comprises a die frame, an upper die and a lower die, the die frame comprises a fixed section and an embedding section, and the upper die or the lower die is embedded in the embedding section; arc-shaped working surfaces are arranged on the opposite sides of the upper die and the lower die, and the shapes of the arc-shaped working surfaces arranged on the upper die and the lower die are the same. According to the utility model, the working surfaces arranged on the upper die and the lower die adopt symmetrical shape structures, so that the processing difficulty of the working surfaces can be effectively reduced; the deformation requirement of the cylindrical blank in the forging process is met through the arc-shaped working face composed of the first arc section and the second arc section, the forging efficiency is effectively improved, materials are saved, the situation that the surface structure of a forge piece is affected due to the fact that the surface of the forge piece is damaged can be effectively avoided through the arrangement of the second arc section, and the forging quality is improved. And the size forging requirements of the cylindrical forgings within the range can be met, and universality is good.

Description

Technical Field

[0001] The utility model relates to the technical field of drop dies, in particular to an integral drop die for a forging hammer. Background Art

[0002] Compared with hot-rolled steel, forged steel has better comprehensive mechanical properties. When forging cylindrical bars, upper and lower dies are generally used, and the same set of dies is suitable for forging cylindrical bars of various diameters. The dies generally use drop dies, and the arc surface of the traditional drop die cavity is an involute, which can match cylindrical bars of various diameters. However, the processing of the involute is time-consuming and labor-intensive, and the arc joints on the cylindrical bars need to be manually polished after processing, which makes it difficult to guarantee the process dimensions. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defects of the existing technology. The utility model proposes an integral throwing die for a forging hammer, and adopts a symmetrical structure for the involutes opened on the upper die and the lower die to ensure the forging efficiency and surface smoothness of the forging.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: an integral throwing die for a forging hammer, comprising:

[0005] A mold frame, the mold frame comprising a fixed section and an embedded section, the upper mold or the lower mold being embedded in the embedded section;

[0006] The upper mold and the lower mold are both provided with arc-shaped working surfaces on opposite sides of the upper mold and the lower mold, and the arc-shaped working surfaces provided on the upper mold and the lower mold are of the same shape;

[0007] The arc-shaped working surface includes a first arc segment and a second arc segment. The second arc segment is arranged at both ends of the first arc segment, and an edge of the second arc segment is tangent to an edge of the first arc segment.

[0008] Furthermore, the direction of the second arc segment is opposite to that of the first arc segment, and the radius of the second arc segment is smaller than that of the first arc segment.

[0009] Furthermore, the height of the upper mold is greater than the height of the lower mold.

[0010] Furthermore, the fixed section and the engaging section are both open frame structures, a first engaging groove cooperating with the anvil is provided on the fixed section, and a second engaging groove for the upper mold or the lower mold to be embedded is provided on the engaging section, the center of the first engaging groove and the center of the second engaging groove are located on the same axis, and a through hole for the entry and exit of the blank is provided through the engaging section along the axial direction of the arc-shaped working surface.

[0011] Furthermore, a slot hole is provided on the connecting section of the fixing section and the engaging section, which passes through the thickness direction thereof, and the center of the slot hole is located on the same axis as the center of the first embedding groove or the second embedding groove.

[0012] Compared with the prior art, the beneficial effects of the present invention include: by adopting a symmetrical shape structure for the working surfaces opened on the upper die and the lower die, the processing difficulty of the working surfaces can be effectively reduced; the arc-shaped working surface composed of the first arc segment and the second arc segment is used to meet the deformation requirements of the cylindrical blank during the forging process, effectively improving the forging efficiency and saving materials. The setting of the second arc segment can effectively avoid damage to the surface of the forging, thereby affecting the surface structure of the forging, and can meet the dimensional forging requirements of cylindrical forgings within a range, and has good versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them:

[0014] Figure 1 The front cross-sectional structure of the die frame of the integral throwing die for a forging hammer is schematically shown;

[0015] Figure 2 The side view structure of the die frame of the integral throwing die for a forging hammer is schematically shown;

[0016] Figure 3 The diagram schematically shows the closing of the upper and lower dies of the integral throw die for a forging hammer.

[0017] Numbers in the figure: 1-mold frame, 2-upper mold, 3-lower mold, 4-arc working surface, 5-first arc segment, 6-second arc segment, 7-first embedding groove, 8-second embedding groove. DETAILED DESCRIPTION

[0018] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural methods and implementation methods. Therefore, the following specific embodiments and drawings are only illustrative of the technical solution of the present invention and should not be regarded as the entire present invention or as a limitation or restriction of the technical solution of the present invention.

[0019] Figure 1 The front cross-sectional structure of the die frame of the integral throwing die for a forging hammer is schematically shown; Figure 2 The side view structure of the die frame of the integral throwing die for a forging hammer is schematically shown; Figure 3 The diagram schematically shows the closing of the upper and lower dies of the integral throw die for a forging hammer.

[0020] An integral die for a forging hammer includes a die frame 1, an upper die 2, and a lower die 3, wherein the upper die 2 or the lower die 3 is fixed in a single die frame 1, and then the die frame 1 with the lower die 3 is fixed below, and the die frame 1 with the upper die 2 is fixed to the forging hammer, and the forging process is completed by driving the upper die 2 to approach and move away from the lower die 3 by the forging hammer.

[0021] like Figure 3 As shown, the upper mold 2 and lower mold 3 are each provided with a curved working surface 4 on opposite sides. The curved working surfaces 4 on the upper mold 2 and lower mold 3 have the same shape. The shape of the curved working surface 4 is described in detail below. The curved working surface 4 includes a first arc segment 5 and a second arc segment 6. The second arc segment 6 is provided at both ends of the first arc segment 5, in an opposite direction to the first arc segment 5, and has a smaller radius than the first arc segment 5. By means of the second arc segments 6 arranged at both ends of the first arc segment 5, the deformation requirements of the cylindrical blank during the forging process can be met, the forging efficiency can be effectively improved, and materials can be saved. The arc working surface 4 formed by the first arc segment 5 and the second arc segment 6 can avoid damage to the surface of the forging, thereby affecting the surface structure of the forging; the arc working surface 4 at a fixed size can meet the forging process of the cylindrical blank slightly larger than the diameter of the first arc segment 5, and there is no need to remake the upper die 2 and the lower die 3 of the corresponding size to complete the forging process.

[0022] Specifically, the radius of the first arc segment 5 is set to 120 mm, and the radius of the second arc segment 6 is set to 50 mm, wherein the first arc segment 5 is formed by the upper die 2 and the lower die 3 being recessed upward to form an arc segment, while the second arc segment 6 is formed by the upper die 2 and the lower die 3 being recessed downward to form an arc segment, and the second arc segment 6 is tangent to the first arc segment 5 at one end close to the first arc segment 5, while the second arc segment 6 is tangent to the horizontal plane at one end away from the first arc segment 5. After the upper die 2 and the lower die 3 are forged through a forging block, the forging block is sawed apart according to the height dimensions of the upper die 2 and the lower die 3, and the arc-shaped working surface 4 is processed on the sawn forging block, the upper die 2 and the lower die 3 are fixed to a separate mold frame 1, wherein the height of the upper die 2 is greater than the height of the lower die 3.

[0023] The mold frame 1 includes a fixed section and a fitting section, into which the upper mold 2 or lower mold 3 is fixed by fitting. Both the fixed section and the fitting section are open frame structures. The fixed section is provided with a first fitting groove 7 that mates with the anvil, which secures the mold frame 1. The fitting section is provided with a second fitting groove 8 for the upper mold 2 or lower mold 3 to fit into. The centers of the first fitting groove 7 and the second fitting groove 8 are coaxial. The fitting section of the mold frame 1, which is fixed by the anvil, is fitted with the lower mold 3. A through hole for the entry and exit of the blank is provided along the axial direction of the curved working surface 4 of the lower mold 3. The upper mold 2 is fitted into the fitting section of the other mold frame 1 and secured to the forging hammer via the fixed section of the other mold frame 1. The forging hammer drives the upper mold 2 toward or away from the lower mold 3 to complete the forging process of the cylindrical blank. It is worth mentioning that a slot hole is opened on the fixing section of the mold frame 1 and the connecting section of the engaging section, which runs through the thickness direction thereof. The center of the aforementioned slot hole is located on the same axis as the center of the first embedding groove 7 or the second embedding groove 8. The slot hole is provided to facilitate the cooling and demolding process of the upper mold 2 or the lower mold 3.

[0024] The technical scope of the present invention is not limited to the contents described above. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical concept of the present invention, and these deformations and modifications should all fall within the scope of protection of the present invention.

Claims

1. An integral throwing die for a forging hammer, characterized in that: include: A mold frame (1), the mold frame (1) comprising a fixed section and an embedded section, the upper mold (2) or the lower mold (3) being embedded in the embedded section; The upper mold (2) and the lower mold (3) are both provided with arc-shaped working surfaces (4) on opposite sides of the upper mold (2) and the lower mold (3), and the arc-shaped working surfaces (4) provided on the upper mold (2) and the lower mold (3) are of the same shape; The arc-shaped working surface (4) comprises a first arc segment (5) and a second arc segment (6), wherein the second arc segment (6) is arranged at both ends of the first arc segment (5), and the edge of the second arc segment (6) is tangent to the edge of the first arc segment (5).

2. The integral hammer die for forging hammer according to claim 1, characterized in that: The second circular arc segment (6) is in the opposite direction to the first circular arc segment (5), and the radius of the second circular arc segment (6) is smaller than the radius of the first circular arc segment (5).

3. The integral hammer die for forging hammer according to claim 2, characterized in that: The height of the upper mold (2) is greater than the height of the lower mold (3).

4. The integral hammer die for a forging hammer according to claim 1, characterized in that: The fixed section and the engaging section are both open frame structures, a first engaging groove (7) cooperating with the anvil is provided on the fixed section, and a second engaging groove (8) for the upper mold or the lower mold to be embedded is provided on the engaging section, the center of the first engaging groove (7) and the center of the second engaging groove (8) are located on the same axis, and a through hole for the blank to enter and exit is provided through the engaging section along the axial direction of the arc-shaped working surface.

5. The integral hammer die for a forging hammer according to claim 1, characterized in that: A slot hole is provided on the connecting section of the fixing section and the engaging section and passes through the thickness direction thereof, and the center of the slot hole and the center of the first embedding groove (7) or the second embedding groove (8) are located on the same axis.

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