Precise forging device for threaded pin shaft

Abstract

The utility model relates to a precise forging device for a threaded pin shaft, which comprises an upper die fixing plate, an upper die and a lower die, the upper die comprises an upper die main plate, a square boss, a pressing lug boss, an upper die preformed hole and a fastener, and the upper die is fixed on the upper die fixing plate through the upper die preformed hole and the fastener; the lower die comprises a bottom plate, a lower die cavity, a lower die wing plate and a lower die cushion block, the lower die cavity is of a hollow cavity structure, the lower portion of the hollow cavity is a circular die cavity, and the lower die cushion block is installed in the circular die cavity; and a pin shaft die cavity matched with the pressing lug boss for use is arranged above the circular die cavity. The thread pin shaft machining tool is ingenious in design, simple in structure, convenient to machine and form and easy to operate, saves time and labor, greatly improves production efficiency, and solves the technical problems that when an existing thread pin shaft is machined, machining procedures are complex, machining allowance is large, raw materials are wasted, time and labor are wasted, and production cost is increased. Good market prospects and development space are realized.

Description

Technical Field

[0001] This utility model relates to the field of precision forging technology, and in particular to a precision forging device for threaded pins. Background Technology

[0002] Threaded pins are commonly used connecting components on hydraulic supports. Most existing threaded pins are machined directly from round steel, a complex process with large machining allowances. This not only wastes raw materials but also is time-consuming and labor-intensive, increasing production costs. Designing a sophisticated, simple, easy-to-manufacture, and efficient precision forging device for threaded pins, which saves time and labor and significantly improves production efficiency, is a problem that needs to be solved. Utility Model Content

[0003] To address the technical problems of complex processing procedures, large processing allowances, waste of raw materials, and increased production costs in existing threaded pin processing, this utility model provides a precision forging device for threaded pins. This device features ingenious design, simple structure, convenient processing and forming, easy operation, time and labor saving, and significantly improved production efficiency.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a precision forging device for threaded pins, comprising an upper die fixing plate, an upper die, and a lower die. The upper die includes an upper die main plate, a square boss, a pressing protrusion, an upper die pre-drilled hole, and fasteners. The square boss is disposed on the upper part of the upper die main plate, and the upper die is fixed to the upper die fixing plate through the upper die pre-drilled hole and fasteners. The lower die includes a base plate, a lower die cavity, a lower die wing plate, and a lower die pad. The base plate is fixedly disposed on the lower platform of the press, and the lower die cavity is fixedly welded to the base plate. The lower die cavity has a hollow cavity structure, the lower part of which is a circular die cavity, and the lower die pad is installed in the circular die cavity. The upper part of the circular die cavity is a pin die cavity that matches the pressing protrusion.

[0005] As a further optimization of the above-mentioned precision forging device for threaded pins, an ejection hole is provided on the base plate at the center of the lower die cavity. The diameter of the ejection hole is smaller than the diameter of the circular cavity of the lower die cavity, so as to facilitate ejecting the pin from the bottom to the top after forging.

[0006] As a further optimization of the above-mentioned precision forging device for threaded pins, the lower die wing plate is fixedly welded to the top outer edge of the lower die cavity along the circumferential direction to form a pressure-bearing part for bearing pressure.

[0007] As a further optimization of the above-mentioned precision forging device for threaded pins, a triangular rib for reinforcement is provided between the outer side of the lower die cavity and the base plate.

[0008] As a further optimization of the above-mentioned precision forging device for threaded pins, both the pressing protrusion and the pin cavity in the upper part of the lower die cavity are regular hexagonal structures.

[0009] As a further optimization of the above-mentioned precision forging device for threaded pins, the upper die fixing plate is a rectangular thick plate structure. The upper die fixing plate includes a fixing groove, a square hole, a fixing plate reserved hole, and a lifting hole. The fixing groove is located at the four corners of the upper die fixing plate and is fixed to the press by fasteners. The square hole is located at the center of the upper die fixing plate and matches the shape of the square boss on the upper die. The fixing plate reserved hole is located around the square hole and matches the upper die reserved hole. The upper die is fixed below the upper die fixing plate by inserting fasteners.

[0010] As a further optimization of the above-mentioned precision forging device for threaded pins, the number of fixed long slots is four.

[0011] As a further optimization of the above-mentioned precision forging device for threaded pins, the fasteners include high-strength bolts, nuts, and washers.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] I. This utility model includes an upper mold fixing plate, an upper mold, and a lower mold. Through the pre-designed upper and lower molds, threaded pins can be processed conveniently and quickly. It features a simple structure, easy processing and forming, simple operation, saves time and labor, and greatly improves production efficiency. II. The lower mold cavity has a hollow cavity structure. The lower part of the hollow cavity is a circular mold cavity. Lower mold pads are installed inside the circular mold cavity to control the length of the threaded pin. For threaded pins of the same specification but with different shaft lengths, different pads can be used to control the length. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the longitudinal section structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the upper mold fixing plate from below.

[0016] Figure 3 This is a side view of the upper mold structure;

[0017] Figure 4 This is a top view of the upper mold structure;

[0018] Figure 5This is a schematic diagram of the longitudinal section structure of the lower mold; the markings in the diagram are: 1. Upper mold fixing plate, 101. Fixing long groove, 102. Square hole, 103. Fixed plate reserved hole, 104. Lifting hole, 2. Upper mold, 201. Upper mold main plate, 202. Square boss, 203. Lower pressing protrusion, 204. Upper mold reserved hole, 3. Lower mold, 301. Base plate, 302. Lower mold cavity, 303. Lower mold wing plate, 304. Lower mold pad, 305. Ejection hole, 306. Triangular rib. Detailed Implementation

[0019] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0020] like Figure 1 As shown, Figure 1 This is a schematic diagram of the main structure of this utility model; it is used for precision forging of threaded pins, including an upper die fixing plate 1, an upper die 2, and a lower die 3. The upper die 2 includes an upper die main plate 201, a square boss 202, a pressing protrusion 203, an upper die reserved hole 204, and fasteners. The square boss 202 is disposed on the upper part of the upper die main plate 201, and the upper die 2 is fixed to the upper die fixing plate 1 through the upper die reserved hole 204 and fasteners. The lower die 3 includes a base plate 301, a lower die cavity 302, a lower die wing plate 303, and a lower die pad 304. The base plate 301 is fixedly disposed on the lower platform of the press, and the lower die cavity 302 is fixedly welded to the base plate 301. The lower die cavity 302 has a hollow cavity structure, and the lower part of the hollow cavity is a circular die cavity. The lower die pad 304 is installed in the circular die cavity. The upper part of the circular die cavity is a pin die cavity that matches the pressing protrusion 203.

[0021] An ejector hole 305 is provided on the base plate 301 at the center of the lower mold cavity 302. The diameter of the ejector hole 305 is smaller than the diameter of the circular cavity of the lower mold cavity 302, so as to facilitate the ejection of the pin from the bottom to the top after forging.

[0022] The lower mold wing plate 303 is fixedly welded to the top outer edge of the lower mold cavity 302 along the circumferential direction, forming a pressure-bearing part for bearing pressure. A triangular rib 306 for reinforcement is provided between the outer side of the lower mold cavity 302 and the bottom plate 301.

[0023] Both the pressing protrusion 203 and the pin shaft cavity on the upper part of the lower mold cavity 302 are regular hexagonal structures.

[0024] The upper mold fixing plate 1 is a rectangular thick plate structure, including a fixing groove 101, a square hole 102, a fixing plate reserved hole 103, and a lifting hole 104. The fixing groove 101 is located at the four corners of the upper mold fixing plate 1 and is fixed to the press by fasteners. There are four fixing grooves 101. The square hole 102 is located at the center of the upper mold fixing plate 1 and matches the shape of the square boss 202 on the upper mold 2. The fixing plate reserved hole 103 is located around the square hole 102 and matches the upper mold reserved hole 204. The upper mold 2 is fixed below the upper mold fixing plate 1 by inserting fasteners.

[0025] The fasteners include high-strength bolts, nuts, and washers.

[0026] like Figure 1 As shown, the usage process of this utility model is as follows: In use, first connect the upper die fixing plate 1 to the upper die 2, then fix the upper die fixing plate 1 to the press slide, and then fix the lower die 3 to the lower worktable of the press. Place the heated forging raw material into the lower die cavity 302, start the press, and the downward pressing protrusion 203 presses down on the forging raw material. The pin die cavity matches the downward pressing protrusion 203, and the head and rod of the threaded pin can be forged. After forging, push the lower die pad 304 upward through the ejector rod to eject the formed threaded pin, thus completing the forging process.

[0027] After precision forging, the head of the threaded pin can be directly formed without further machining. The allowance for the rod is very small, which facilitates machining, and the forged pin has higher strength and lower production costs.

[0028] In actual use, the pressing protrusion 203 is a regular hexagon, and its shape and size are consistent with the outer dimensions of the threaded pin head. If a special-shaped pin head is encountered, the pressing protrusion 203 and the lower mold cavity 302 of the corresponding shape can be replaced.

[0029] The lower die pad 304 is used to control the length of the threaded pin. For threaded pins of the same specification but with different shaft lengths, different lower die pads can be used to control the length.

[0030] This utility model features an ingenious design, simple structure, convenient processing and forming, and easy operation, saving time and labor, and greatly improving production efficiency. It solves the technical problems of complex processing steps, large processing allowances, waste of raw materials, and increased production costs associated with existing threaded pin processing. Compared to existing technologies, it has excellent market prospects and development potential. The preferred embodiments and examples of this utility model have been described in detail above with reference to the accompanying drawings. However, this utility model is not limited to the above embodiments and examples. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the concept of this utility model.

Claims

1. A precision forging device for threaded pins, characterized in that: The system includes an upper mold fixing plate (1), an upper mold (2), and a lower mold (3). The upper mold (2) includes an upper mold main plate (201), a square boss (202), a pressing protrusion (203), an upper mold reserved hole (204), and fasteners. The square boss (202) is located on the upper part of the upper mold main plate (201), and the upper mold (2) is fixed to the upper mold fixing plate (1) through the upper mold reserved hole (204) and fasteners. The lower mold (3) includes a base plate (301). The lower mold cavity (302), lower mold wing plate (303), lower mold pad (304), and base plate (301) are fixedly installed on the lower platform of the press. The lower mold cavity (302) is fixedly welded to the base plate (301). The lower mold cavity (302) is a hollow cavity structure. The lower part of the hollow cavity is a circular mold cavity. The lower mold pad (304) is installed in the circular mold cavity. The upper part of the circular mold cavity is a pin mold cavity that matches the lower pressing protrusion (203).

2. The precision forging device for threaded pins as described in claim 1, characterized in that: An ejector hole (305) is provided on the base plate (301) at the center of the lower mold cavity (302). The diameter of the ejector hole (305) is smaller than the diameter of the circular cavity of the lower mold cavity (302) so as to facilitate the ejection of the pin from the bottom to the top after forging.

3. The precision forging device for threaded pins as described in claim 1, characterized in that: The lower mold wing plate (303) is fixedly welded to the top outer edge of the lower mold cavity (302) along the circumferential direction to form a pressure-bearing part for bearing pressure.

4. The precision forging apparatus for threaded pins as described in claim 1, characterized in that: A triangular rib (306) for reinforcement is provided between the outer side of the lower mold cavity (302) and the bottom plate (301).

5. The precision forging apparatus for threaded pins as described in claim 1, characterized in that: Both the pressing protrusion (203) and the pin shaft cavity on the upper part of the lower mold cavity (302) are regular hexagonal structures.

6. The precision forging apparatus for threaded pins as described in claim 1, characterized in that: The upper mold fixing plate (1) is a rectangular thick plate structure. The upper mold fixing plate (1) includes a fixing long groove (101), a square hole (102), a fixing plate reserved hole (103) and a lifting hole (104). The fixing long groove (101) is located at the four corners of the upper mold fixing plate (1) and is fixed to the press by fasteners. The square hole (102) is located at the center of the upper mold fixing plate (1). The square hole (102) matches the shape of the square boss (202) on the upper mold (2). The fixing plate reserved hole (103) is located around the square hole (102). The fixing plate reserved hole (103) matches the upper mold reserved hole (204) and is fixed to the lower part of the upper mold fixing plate (1) by inserting fasteners.

7. The precision forging apparatus for threaded pins as described in claim 6, characterized in that: The number of fixed long slots (101) is four.

8. The precision forging apparatus for threaded pins as described in claim 1, characterized in that: The fasteners include high-strength bolts, nuts, and washers.

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