High-temperature alloy dodecagonal flange plate bolt hot upsetting precision forming die

Abstract

The utility model discloses a high-temperature alloy dodecagonal flange plate bolt hot upsetting forming die assembly which comprises an upper die cushion (1), an ejector rod sleeve (2), a forming female die ejector rod (3), a forming female die (4), a lower die guide sleeve (5), a forming lower die (6), an upper die installing cavity (11) and a forming female die chamfer (12). A forming female die chamfer (12) is arranged on the forming female die (4), the upper die cushion (1), the ejector rod sleeve (2), the forming female die (4) and the lower die guide sleeve (5) are respectively mounted in the upper die mounting cavity (11), the forming female die ejector rod (3) is respectively inserted into the ejector rod sleeve (2) and the forming female die (4), and the upper end of the forming lower die (6) is inserted into the lower die guide sleeve (5). The machining time is short, the speed is high, the number of procedures is small, tool abrasion is slow, machining allowance does not need to be reserved, and cost is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, and in particular relates to a hot upsetting forming mold for high-temperature alloy twelve-angle flange bolts. Background Art

[0002] For a long time, the hot upsetting of twelve-point flange bolts made of high-temperature alloys and other materials has been rough processing, and machining allowances need to be left. After the hot upsetting is completed, the length of the twelve-point head shape and the chamfering of the end face of the twelve-point head shape need to be mechanically supplemented. In the process of mechanically processing the length of the twelve-point head and the chamfering of the end face, there are flange burrs in the twelve-point groove. It is time-consuming and laborious to remove the flange burrs generated by the mechanical processing, and a lot of high-temperature alloy raw materials are wasted. The tool wears quickly when machining the end face chamfer and the length of the twelve-point bolt made of high-temperature alloy, resulting in a long time, slow speed, many processes, fast tool wear, much waste of raw materials and high cost. Summary of the invention

[0003] The utility model aims to overcome the above disadvantages and provide a high-temperature alloy twelve-angle flange bolt hot upsetting forming die which has short processing time, high speed, few processes, slow tool wear, no need to leave machining allowance and saves costs.

[0004] The utility model discloses a hot upsetting forming die for high-temperature alloy twelve-point flange bolts, comprising an upper die pad, a push rod sleeve, a forming die push rod, a forming die, a lower die guide sleeve, a forming lower die, an upper model cavity, and a forming die chamfer. The utility model is characterized in that a forming die chamfer is arranged on the forming die, an upper die pad, a push rod sleeve, a forming die, and a lower die guide sleeve are respectively installed in the upper model cavity, the forming die push rod is respectively inserted into the push rod sleeve and the forming die, and the upper end of the forming lower die is inserted into the lower die guide sleeve.

[0005] The ejector pin of the forming die is T-shaped and can move up and down in the ejector pin sleeve and the forming die.

[0006] An adjusting gasket is installed on the forming die top rod.

[0007] A lower die gasket is installed under the molding lower die, the lower end of the molding lower die and the lower die gasket are installed in the lower mold cavity, and the lower die ejector rod passes through the lower mold cavity and the lower die gasket and is inserted into the molding lower die.

[0008] The lower molding die can move up and down in the lower die guide sleeve.

[0009] The lower die ejector rod can move up and down in the molding lower die, the lower mold cavity and the lower die gasket.

[0010] Compared with the prior art, the utility model has obvious beneficial effects; it can be known from the above technical scheme that: by arranging a forming die chamfer on the forming die, an upper die pad, a push rod sleeve, a forming die and a lower die guide sleeve are respectively installed in the upper model cavity, the forming die push rod is respectively inserted into the push rod sleeve and the forming die, and the upper end of the forming lower die is inserted into the lower die guide sleeve. An independent special twelve-point forming die is one of the key parts of the closed cavity of the forming die. Its shape is cylindrical, the outer layer is a stress ring made of material H13, the middle mold core is a cavity alloy, which is used to manufacture the mold cavity, and the mold cavity of the mold core is a transition between the inner inner surface of the twelve-pointer and the inner circular surface. The position where the inner surface of the twelve-pointer and the inner circular surface transition is manufactured with a surface that is the same as the chamfer of the end face of the twelve-pointer, which is used to form the chamfer of the end face of the twelve-pointer. The circular surface is used to assemble the special ejector rod of the forming die, so that the twelve-pointer surface and the twelve-pointer chamfer surface form a closed cavity during forming; secondly, the mold core and the outer stress ring are interfered by 0.3-0.4 on both sides for interference pressing, and the overall outer circle is positioned to install the mold cavity to ensure the coaxiality of the mold cavity and the mold cavity, and indirectly ensure the coaxiality of the head rod of the formed twelve-pointer bolt. The special ejector pin for the forming die is in the shape of a circular step. The large circular step is a shoulder, which is mainly used to hold the ejector pin from falling and bear part of the forming force during upsetting, and evenly distribute the forming force to the adjusting gasket and the upper die pad; the small circular step cooperates with the small gap of the circular hole of the special twelve-corner die, and plays a role in forming a closed forming cavity with the twelve-corner inner cavity of the special twelve-corner die and transmitting the forming force to the large circular step shoulder, which is also one of the key parts of the closed cavity of the forming die. The ejector sleeve is cylindrical in shape, with an outer layer of stress ring made of material H13, and the middle mold core is a circular hole cavity alloy, which is used to manufacture the sliding cavity and bear and transmit the forming force of the special twelve-corner die during forming; secondly, the mold core and the outer stress ring have an interference fit of 0.2-0.3 on both sides for interference pressing. The upper die pad is cylindrical in shape, with an outer layer of stress ring made of material H13, and a solid alloy in the middle die core, which is used to withstand all the forming forces transmitted to it by the special twelve-point die and the special ejector rod of the forming die during the forming process, and evenly disperse the forming force to protect the die base; secondly, the die core and the outer stress ring are interfered by 0.2-0.3 on both sides for interference pressing. A lower die gasket is installed under the forming lower die, and the lower end of the forming lower die and the lower die gasket are installed in the lower model cavity. The lower die ejector rod passes through the lower model cavity and the lower die gasket is inserted into the forming lower die. The lower die guide sleeve is annular in shape, and its material can be general mold wear-resistant steel. Generally, the heat treatment hardness needs to reach HRC58-62. Its outer circle is positioned in the model cavity, and the inner hole guides the lower die, thereby ensuring the coaxiality of the formed twelve-point bolt head rod.The lower die has a truncated cone shape, with a hole in the middle for placing the die ejector pin and upsetting the blank. The alloy hole (upper section) is mainly used to place the heated upsetting blank to prevent deformation and strain on the die, and the non-alloy hole is mainly used to pass the lower die ejector pin. The forming die ejector pin is T-shaped, with the large truncated cone as the shoulder, which is mainly used to assemble and fix the lower die and disperse the upsetting forming force. The present application solves the problem of fast tool wear when machining the end face chamfer and the length of the twelve-pointer in high-temperature alloy twelve-pointer bolt, saving the cost of using special tools for machining high-temperature alloy materials; solves the problem that the flange burrs generated when machining the end face chamfer of the twelve-pointer turn into the twelve-pointer groove, and it is difficult to remove the flange burrs later, saving manpower and material resources; in terms of process, the end face chamfer machining process and the deburring process introduced by removing the end face chamfer are directly omitted, shortening the production cycle and improving the processing capacity of this type of product; using this forming method, the twelve-pointer bolt has a fuller shape and better appearance quality; because the twelve-pointer head length and the twelve-pointer end face chamfer of the bolt are accurately formed, no machining allowance is required, thus saving high-temperature alloy raw materials and saving costs. In short; the utility model has short processing time, fast speed, fewer processes, slow tool wear, no machining allowance is required, and cost is saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 It is a structural schematic diagram of the forming concave die of the utility model;

[0013] Figure 3 yes Figure 2 Enlarged view of a;

[0014] Figure 4 It is a bottom view of the concave die of the utility model;

[0015] Figure 5 yes Figure 4 b is an enlarged view;

[0016] Figure 6 It is a usage state diagram of the utility model;

[0017] Figure 7 It is a structural schematic diagram of the rough slope part of the utility model;

[0018] Figure 8 It is a structural schematic diagram of the molded parts and end face chamfering of the utility model;

[0019] Fig. 9 It is a left view of the molded part of the utility model.

[0020] Marking in the figure

[0021] 1. Upper die pad; 2. Ejector sleeve; 3. Forming die ejector; 4. Forming die; 5. Lower die guide sleeve, 6. Forming lower die; 7. Lower model cavity; 8. Lower die gasket; 9. Lower die ejector; 10. Adjusting gasket; 11. Upper model cavity; 12. Forming die chamfer; 13; Rough slope parts; 14. Forming parts; 15. End face chamfer. DETAILED DESCRIPTION

[0022] The specific implementation methods, structures, features and functions of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0023] The purpose of the utility model and the solution of its main technical problems are achieved by adopting the following technical solutions:

[0024] The utility model discloses a hot upsetting forming die for a high-temperature alloy twelve-point flange bolt, comprising an upper die pad 1, a push rod sleeve 2, a forming die push rod 3, a forming die 4, a lower die guide sleeve 5, a forming lower die 6, a lower model cavity 7, a lower die gasket 8, a lower die push rod 9, an adjusting gasket 10, an upper model cavity 11, and a forming die chamfer 12, characterized in that: the forming die 4 is provided with a forming die chamfer 12, the upper die pad 1, the push rod sleeve 2, the forming die 4, and the lower die guide sleeve 5 are respectively installed in the upper model cavity 11, and the forming die push rod 3 is respectively inserted into the push rod sleeve 2, the forming die 4, and the lower die guide sleeve 5; ... The forming die 4 is a die-forming die, the upper end of the forming lower die 6 is inserted into the lower die guide sleeve 5, the forming die ejector pin 3 is T-shaped, and can move up and down in the ejector sleeve 2 and the forming die 4, an adjusting gasket 10 is installed on the forming die ejector pin 3, and a lower die gasket 8 is installed under the forming lower die 6, the lower end of the forming lower die 6 and the lower die gasket 8 are installed in the lower model cavity 7, the lower die ejector pin 9 passes through the lower model cavity 7 and the lower die gasket 8 and is inserted into the forming lower die 6, the forming lower die 6 can move up and down in the lower die guide sleeve 5, and the lower die ejector pin 9 can move up and down in the forming lower die 6, the lower model cavity 7 and the lower die gasket 8.

[0025] When using, Figure 6As shown, the blank part 13 to be formed is heated and put into the die hole of the forming lower die 6, and the upper model cavity 11 moves downward with the upper die pad 1 under the action of the press. Under the action of the lower die guide sleeve 5, the forming lower die 6 is aligned with the forming concave die 4 for special forming of twelve angles and closed. After the heated blank part 13 enters the forming concave die 4 for special forming of twelve angles, it contacts the forming concave die push rod 3. Under the action of the forming concave die push rod 3, the heated blank part 13 begins to deform and form in the forming concave die 4 for special forming of twelve angles. When the forming is completed, The forming die 4 for special forming of the twelve corners, the forming die push rod 3, the forming lower die 6 and the lower die push rod 9 form a closed mold cavity, the relative displacement of all mold tooling stops, the press reaches the bottom dead center, the forming die 4 for special forming of the twelve corners is completely filled, and the upsetting blank part 13 is formed into a forming part 14 with exactly the same internal dimensions as the forming die 4 for special forming of the twelve corners and an end chamfer 15 in this process, the press moves upward, the formed part 14 exits, the press reaches the top dead center, and a working cycle is completed.

[0026] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A hot upsetting forming die for a high-temperature alloy twelve-point flange bolt, comprising an upper die pad (1), a push rod sleeve (2), a forming die push rod (3), a forming die (4), a lower die guide sleeve (5), a forming lower die (6), an upper mold cavity (11), and a forming die chamfer (12), characterized in that; A forming die chamfer (12) is provided on the forming die (4); an upper die pad (1), a push rod sleeve (2), a forming die (4), and a lower die guide sleeve (5) are respectively installed in the upper mold cavity (11); the forming die push rod (3) is respectively inserted into the push rod sleeve (2) and the forming die (4); and the upper end of the forming lower die (6) is inserted into the lower die guide sleeve (5).

2. A hot upsetting die for high temperature alloy twelve-point flange bolts as claimed in claim 1, characterized in that; The forming die ejector rod (3) is T-shaped and can move up and down inside the ejector rod sleeve (2) and the forming die (4).

3. A hot upsetting die for high temperature alloy twelve-point flange bolts as claimed in claim 1, characterized in that; An adjusting gasket (10) is installed on the forming die top rod (3).

4. A hot upsetting die for high temperature alloy twelve-pointed flange bolts as claimed in claim 1, characterized in that; A lower die gasket (8) is installed below the lower molding die (6); the lower end of the lower molding die (6) and the lower die gasket (8) are installed in the lower mold cavity (7); and the lower die ejector rod (9) passes through the lower mold cavity (7) and the lower die gasket (8) and is inserted into the lower molding die (6).

5. A hot upsetting die for high temperature alloy twelve-pointed flange bolts as claimed in claim 1, characterized in that; The lower molding die (6) can move up and down in the lower die guide sleeve (5).

6. A hot upsetting die for high temperature alloy twelve-pointed flange bolts as claimed in claim 4, characterized in that; The lower die push rod (9) can move up and down in the lower molding die (6), the lower mold cavity (7), and the lower die gasket (8).

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