CN216065373U

CN216065373U - Combined square punch for pin head forging

Info

Publication number: CN216065373U
Application number: CN202121163120.5U
Authority: CN
Inventors: 徐邦虎
Original assignee: Jiangsu Longsheng Drilling Machinery Manufacturing Co ltd
Current assignee: Jiangsu Longsheng Drilling Machinery Manufacturing Co ltd
Priority date: 2021-05-27
Filing date: 2021-05-27
Publication date: 2022-03-18
Anticipated expiration: 2031-05-27

Abstract

The utility model discloses a combined square punch for pin head forging, which comprises a punch seat and a punch, wherein the punch seat is designed in a circular structure, a circular punch mounting groove is formed in one side surface of the punch, the punch is designed in a square structure, a circular punch mounting part is arranged at the end, far away from a cutting edge, of the punch and is fixed in the punch mounting groove, a press cover is sleeved on the punch, a plurality of second threaded holes vertical to the end surface of the punch seat are formed in the punch seat, a plurality of third threaded holes vertical to the end surface of the press cover are formed in the press cover, the press cover is abutted against the punch seat, a second screw is connected between the second threaded holes and the third threaded holes, a circular through hole is formed in the press cover, and a connecting handle is arranged at the end surface, far away from the punch, of the punch seat. The utility model has the beneficial effects that: the split structure design is adopted, so that the punch cannot be twisted in the use process, the punch is easy to replace, and the production process, the working time and the manufacturing cost are reduced.

Description

Combined square punch for pin head forging

Technical Field

The utility model relates to the technical field of square punch processing, in particular to a combined square punch for pin head forging.

Background

The pin head is a part of a shockproof and damping facility applied to large facilities such as bridges, large-scale stadium buildings and the like, has strict performance requirements, is a forged product, and has no defects of cracks, folding, overheating and overburning of forgings. The production of pin head forgings usually adopts closed die forging to forge, so that a punch is required to be used. The punch is a metal part on a stamping die in a mechanical tool, is called a stamping rod, a stamping needle or a punch, and is arranged on the stamping die to perform continuous punching, stamping and breaking operation, so that a processed material is separated or plastically deformed, and a required finished product or a semi-finished product is obtained. In the prior art, the punch is usually designed into an integrated structure and is made of high-speed steel and tungsten steel, so that the processing cost is high. In the forging process, the punch is abraded greatly and needs to be replaced frequently, the using amount is very large, and the cost of the punch is high. After the integral type drift wearing and tearing, be difficult to restore, often be the whole change, cause very big waste, and increased the forged cost of round pin head. Further, the remanufacturing of the punch involves many and complicated steps.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a combined square punch for pin head forging, which solves the above problems of the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a square drift of combination formula for round pin head forges, includes drift seat and drift, the drift seat adopts circular structural design, and circular shape drift mounting groove has been seted up to its one side, the drift is square structural design, keeping away from the sword mouth end of drift and being equipped with circular shape drift installation department, the drift installation department is fixed in the drift mounting groove, the cover is equipped with the gland on the drift, set up a plurality of second screw holes of perpendicular to drift seat terminal surface on the drift seat, set up a plurality of third screw holes of perpendicular to gland terminal surface on the gland, gland and drift seat butt, be connected with the second screw between second screw hole and the third screw hole, set up circular through-hole on the gland, the terminal surface of keeping away from the drift of drift seat is equipped with the connection handle.

Further preferably, the connecting handle is designed to be a cylindrical structure, and the circumferential surface of the connecting handle is provided with threads.

Further preferably, a punch connecting portion is provided between the punch and the punch mounting portion.

Further preferably, the punch connecting part is in clearance fit with the through hole, and the punch mounting groove is in clearance fit with the punch mounting part.

Preferably, the circumferential surface of the punch holder is provided with a plurality of first threaded holes, and the first threaded holes are communicated with the punch mounting groove.

Further preferably, a first screw is screwed into the first threaded hole.

Preferably, the plurality of second threaded holes are uniformly arranged along the circumferential direction of the punch holder, and the second threaded holes are designed in a counter bore structure.

Further preferably, the punch is made of H13 steel material, and the punch seat and the gland are made of 42CrMo material.

Has the advantages that: the combined square punch for pin head forging adopts a split structure design, realizes the connection of the punch seat and the gland through the plurality of second screws, ensures the axial fixation of the punch, realizes the radial fixation of the punch through the plurality of first screws, and ensures that the punch cannot be twisted in the using process; the square punch is simple in structure and easy to produce, when the cutting edge of the punch is worn, the punch is easy to replace, the replacement cost of the square punch is reduced, the production process and the working hour are reduced, and the machining efficiency of the square punch is increased; meanwhile, the punch is made of H13 steel, the punch seat and the gland are made of 42CrMo material, the hardness of the punch seat and the gland is HRC36-HRC40, the phenomenon that the cost of the whole square punch is high because the H13 steel is adopted in the whole process is avoided, and the manufacturing cost of the square punch is reduced.

Drawings

FIG. 1 is an exploded view of a modular square punch for pin head forging according to an embodiment of the present invention;

FIG. 2 is another exploded view of the modular square punch for pin head forging according to the embodiment of the present invention;

FIG. 3 is a schematic front view of a combined square punch for pin head forging according to an embodiment of the present invention;

FIG. 4 is another schematic front view of a combined square punch for pin head forging according to an embodiment of the present invention;

fig. 5 is a schematic axial view of a combined square punch for pin head forging according to an embodiment of the present invention.

Reference numerals: 1-punch seat, 11-punch mounting groove, 12-first threaded hole, 13-second threaded hole, 2-punch, 21-punch mounting part, 22-punch connecting part, 3-connecting handle, 4-gland, 41-through hole, 42-third threaded hole, 5-first screw and 6-second screw.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1-5, a combined square punch for pin head forging comprises a punch holder 1 and a punch 2, wherein the punch holder 1 is designed in a circular structure, a round punch head mounting groove 11 is arranged on one side surface of the punch head, the punch head 2 is designed in a square structure, the end of the punch 2 far away from the cutting edge is provided with a round punch mounting part 21, the punch mounting part 21 is fixed in the punch mounting groove 11, the punch 2 is sleeved with a gland 4, the punch holder 1 is provided with a plurality of second threaded holes 13 vertical to the end surface of the punch holder 1, a plurality of third threaded holes 42 vertical to the end surface of the gland 4 are arranged on the gland 4, the gland 4 is abutted against the punch holder 1, a second screw 6 is connected between the second threaded hole 13 and the third threaded hole 42, a circular through hole 41 is formed in the gland 4, and a connecting handle 3 is arranged on the end face, far away from the punch 2, of the punch seat 1.

In this application, square drift adopts the split type structural design of drift seat 1, drift 2 and gland 4, realizes the connection of drift seat 1 and gland 4 through a plurality of second screws 6, guarantees the axial fixity of drift 2, realizes the radial fixation of drift 2 through a plurality of first screws 5, guarantees that drift 2 can not take place to twist reverse in the use. The square punch is simple in structure and easy to produce, when the cutting edge of the punch is abraded, the punch is easy to replace, replacement cost of the square punch is reduced, production procedures and working hours are reduced, and machining efficiency of the square punch is improved.

Preferably, the connecting handle 3 is designed to be a cylindrical structure, the circumferential surface of the connecting handle is provided with threads for connecting with a die holder of a pin head processing die, and the threads are conveniently connected.

Preferably, a punch connecting part 22 is arranged between the punch 2 and the punch mounting part 21 and is used for being matched with the gland 4.

Preferably, the punch connecting part 22 is in clearance fit with the through hole 41, and the punch mounting groove 11 is in clearance fit with the punch mounting part 21, so that the smooth installation of the punch 2 is ensured, and the replacement time of the punch 2 is reduced.

Preferably, a plurality of first threaded holes 12 are formed in the circumferential surface of the punch holder 1, and the plurality of first threaded holes 12 are communicated with the punch mounting groove 11; the first screw 5 is screwed in the first threaded hole 12, and the first screw 5 is screwed into the first threaded hole 12 to press the punch mounting part 21 and prevent the punch 2 from twisting in the use process. In this application, first screw hole 12 is three, and the spiro union has three first screw 5 in it, realizes the three point location of drift installation department 21, guarantees that the installation of first screw 5 is firm.

Preferably, a plurality of the second threaded holes 13 are uniformly arranged along the circumferential direction of the punch holder 1, and the second threaded holes 13 are designed in a counter bore structure. In this application, second screw hole 13 on punch holder 1 has six, through six second screw 6 locking gland 4, guarantees that punch 2's is fixed firm.

Preferably, the punch 2 is made of H13 steel material, and the hardness of the punch is HRC48-HRC 52; the punch holder 1 and the gland 4 are made of 42CrMo materials, the hardness of the punch holder is HRC36-HRC40, the phenomenon that the cost of the whole square punch is high due to the fact that H13 steel is adopted for machining is avoided, and the manufacturing cost of the square punch is reduced.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall be included in the contents of the present invention within the scope of the protection of the present invention.

Claims

1. A square drift of combination formula for pin head forges which characterized in that: including drift seat (1) and drift (2), drift seat (1) adopts circular structural design, and circular drift mounting groove (11) have been seted up to one side of it, drift (2) are square structural design, keeping away from the cutting edge of drift (2) and holding away from cutting edge and be equipped with circular shape drift installation department (21), drift installation department (21) are fixed in drift mounting groove (11) in, the cover is equipped with gland (4) on drift (2), set up a plurality of second screw hole (13) of perpendicular to drift seat (1) terminal surface on drift seat (1), set up a plurality of third screw hole (42) of perpendicular to gland (4) terminal surface on gland (4), gland (4) and drift seat (1) butt, be connected with second screw (6) between second screw hole (13) and third screw hole (42), set up circular through-hole (41) on gland (4), the end face, far away from the punch (2), of the punch seat (1) is provided with a connecting handle (3).

2. A unitized square punch for pin head forging according to claim 1, wherein: the connecting handle (3) is designed into a cylindrical structure, and the circumferential surface of the connecting handle is provided with threads.

3. A unitized square punch for pin head forging according to claim 1, wherein: and a punch connecting part (22) is arranged between the punch (2) and the punch mounting part (21).

4. A unitized square punch for pin head forging according to claim 3, wherein: the punch connecting part (22) is in clearance fit with the through hole (41), and the punch mounting groove (11) is in clearance fit with the punch mounting part (21).

5. A unitized square punch for pin head forging according to claim 1, wherein: the periphery of the punch head seat (1) is provided with a plurality of first threaded holes (12), and the first threaded holes (12) are communicated with the punch head mounting groove (11).

6. A unitized square punch for pin head forging according to claim 5, wherein: a first screw (5) is screwed in the first threaded hole (12).

7. A unitized square punch for pin head forging according to claim 1, wherein: the plurality of second threaded holes (13) are uniformly arranged along the circumferential direction of the punch head seat (1), and the second threaded holes (13) are designed in a counter bore structure.

8. A unitized square punch for pin head forging according to claim 1, wherein: the punch (2) is made of H13 steel materials, and the punch seat (1) and the gland (4) are made of 42CrMo materials.