Screw cold heading punch mounting structure

Abstract

The utility model discloses a screw cold heading punch mounting structure which comprises a mounting plate, a mounting column and a punch. The mounting plate and the mounting column are fixedly connected through a fixing bolt, and the whole mounting plate is in a rectangular plate shape; the mounting column comprises a connecting plate and a cylindrical part which are integrally formed, and a mounting hole is formed in the center of the front end of the mounting column; the punch is mounted in the mounting hole; the punch comprises a mounting part and a punch part, the whole mounting part is cylindrical, and the diameter of the mounting hole is larger than that of the mounting part; four positioning threaded holes are formed in the side wall of the mounting column in a circular array; the rear side of the mounting hole is of a solid structure and is difficult to deform during use, so that the precision of the mounted punch is ensured; and the position of the punch can be adjusted through the set screw, so that the precision of the punch during cold heading is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of screw processing, in particular to a cold heading punch installation structure for screws. Background Technique

[0002] The cold heading process is one of the new processes of metal pressure processing with little or no cutting. It is a processing method that utilizes the plastic deformation generated by metal under the action of external force and, with the aid of a die, redistributes and transfers the metal volume to form the required parts or blanks.

[0003] For example, the patent with the authorization announcement number of 2022.09.16 discloses a cross-slot punch assembly for cold heading screw processing, including a mounting plate, a fixed tank, a transmission mechanism, a lubrication mechanism, and a clamping mechanism. The mounting plate is fixedly connected to one side of the fixed tank, the transmission mechanism is arranged inside the fixed tank, the lubrication mechanism is arranged on the top of the fixed tank, and the clamping mechanism is arranged inside the fixed tank.

[0004] The above patent is more convenient to replace the cross punch block during use; however, the disadvantage of the above patent is that since a relatively large cavity needs to be opened in the fixed tank to install the transmission mechanism, this will reduce the structural strength of the fixed tank. Although the punch can be replaced, the fixed tank is prone to deformation after long-term use, resulting in a reduction in processing accuracy.

[0005] Therefore, it is necessary for us to improve such a structure to overcome the above defects. Content of the Utility Model

[0006] The purpose of the utility model is to provide a cold heading punch installation structure for screws to solve the problems put forward in the above background technique.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] A cold heading punch installation structure for screws includes a mounting plate, a mounting column, and a punch; the mounting plate and the mounting column are fixedly connected by fixing bolts, and the mounting plate is integrally in the shape of a rectangular plate; the mounting column includes a connecting plate and a cylindrical part formed integrally, and a mounting hole is opened at the center of the front end of the mounting column; the punch is installed in the mounting hole; the punch includes a mounting part and a punch head part, the mounting part is integrally cylindrical, and the diameter of the mounting hole is larger than the diameter of the mounting part; four positioning threaded holes are arranged in a circular array on the side wall of the mounting column; a set screw is threadedly connected in the positioning threaded hole, the set screw is an internal hexagonal flat-end set screw, and a locknut is also threadedly connected to the set screw; at the same time, a positioning surface corresponding to the set screw is also arranged on the side wall of the mounting part; the locknut abuts against the positioning surface.

[0009] Further, first through holes are formed at the four corners of the mounting plate.

[0010] Further, first threaded holes are formed at the four corners of the rear side of the connecting plate, and fixing bolts pass through the first through holes and engage with the first threaded holes.

[0011] Further, the diameter of the mounting hole is one-half of the diameter of the cylindrical portion.

[0012] Further, the width of the positioning surface is greater than the diameter of the body of the set screw.

[0013] Further, the positioning surface is inclined inwards.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] The rear side of the mounting hole is a solid structure, and during use, it is difficult to deform, thus ensuring the accuracy after the punch is installed;

[0016] In this solution, the position of the punch can be adjusted by the set screw to ensure the accuracy of the punch during cold heading;

[0017] The punch can be easily pulled out from the mounting hole for replacement by loosening the four set screws;

[0018] The positioning surface is inclined inwards. This setting enables the set screw to apply a force towards the bottom of the mounting hole to the punch when tightened, preventing the punch from slipping out of the mounting hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of a screw cold heading punch mounting structure.

[0020] Figure 2 is a front view of a screw cold heading punch mounting structure.

[0021] Figure 3 is a side view of a screw cold heading punch mounting structure.

[0022] Figure 4 is Figure 2 a cross-sectional view taken along line A-A in

[0023] Figure 5 is Figure 2 a cross-sectional view taken along line B-B in

[0024] Figure 6 is an exploded view of a screw cold heading punch mounting structure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. Components of the embodiments of the present utility model typically described and illustrated in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0026] Please refer to Figures 1-6 , a screw cold heading punch installation structure, including a mounting plate 1, a mounting post 2, and a punch 3;

[0027] The mounting plate 1 and the mounting post 2 are fixedly connected by fixing bolts 4. The mounting plate 1 is integrally in the shape of a rectangular plate, and first through holes 101 are provided at the four corners of the mounting plate 1;

[0028] The mounting post 2 includes a connecting plate 201 and a cylindrical portion 202 formed integrally. First threaded holes 203 are provided at the four corners on the rear side of the connecting plate 201. The fixing bolts 4 pass through the first through holes 101 and engage with the first threaded holes 203;

[0029] An installation hole 207 is provided at the center of the front end of the mounting post 2. At the same time, the diameter of the installation hole 207 is one-half of the diameter of the cylindrical portion 202; the punch 3 is installed in the installation hole 207; the punch 3 includes an installation portion 301 and a punching portion 302. The installation portion 301 is integrally cylindrical. At the same time, the diameter of the installation hole 207 is larger than the diameter of the installation portion 301;

[0030] Four positioning threaded holes 204 are arranged in a circular array on the side wall of the mounting post 2; a set screw 205 is threadedly connected in the positioning threaded hole 204. The set screw 205 is an internal hexagon flat end set screw. A locknut 206 is also threadedly connected to the set screw 205. The locknut 206 and the positioning threaded hole 204 form a double-nut anti-loosening structure to prevent the positioning threaded hole 204 from loosening;

[0031] At the same time, a positioning surface 303 corresponding to the set screw 205 is also provided on the side wall of the installation portion 301; the locknut 206 abuts against the positioning surface 303; at the same time, the width of the positioning surface 303 should be greater than that of the set screw 205; so that when the punch 3 is adjusted in position, the set screw 205 can always abut against the positioning surface 303;

[0032] In this solution, the position of the punch can be adjusted by tightening the screw 205 to ensure the accuracy of the punch during cold heading;

[0033] During the cold heading screw processing, a punch block is required to process the screw. However, after long-term use, the punch 3 is easily damaged and needs to be replaced. At this time, the four set screws 205 can be loosened by tightening the screws 205, and the punch 3 can be easily pulled out from the mounting hole 207 for replacement.

[0034] Put the new punch back into the mounting hole 207. At this time, the bottom of the mounting portion 301 of the punch abuts against the bottom of the mounting hole 207. The rear side of the mounting hole is a solid structure, which is difficult to deform during use, thereby ensuring the accuracy of the punch after installation.

[0035] The punch is fixed in the axial direction, and in the radial direction, the punch can be fixed by tightening the set screw 205;

[0036] As certain embodiments of this solution, the positioning surface 303 is tilted inward. This setting enables the set screw 205 to apply a force toward the bottom of the mounting hole 207 to the punch when tightening, thereby preventing the punch from falling out of the mounting hole 207.

[0037] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "left," "right," and the like indicate positions or locations based on the positions shown in the accompanying drawings, or the positions or locations in which the product of the present invention is typically placed when in use, or the positions or locations commonly understood by those skilled in the art. These terms are intended solely to facilitate the description of the present invention and simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific position, be constructed, or operate in a specific position. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, terms such as "disposed" and "connected" should be understood broadly. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection, an indirect connection through an intermediate medium, or internal communication between two components. A person of ordinary skill in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

Claims

1. A cold heading punch mounting structure for screws, comprising a mounting plate, a mounting post and a punch; characterized in that, The mounting plate and the mounting post are fixedly connected by fixing bolts, and the mounting plate is integrally in the shape of a rectangular plate; the mounting post includes a connecting plate and a cylindrical portion that are integrally formed, and a mounting hole is provided at the center of the front end of the mounting post; the punch is installed in the mounting hole; the punch includes a mounting portion and a punching portion, the mounting portion is integrally cylindrical, and the diameter of the mounting hole is larger than the diameter of the mounting portion; four positioning threaded holes are arranged in a circular array on the side wall of the mounting post; a set screw is threadedly connected in the positioning threaded hole, the set screw is an internal hexagon flat end set screw, and a locking nut is also threadedly connected to the set screw; at the same time, a positioning surface corresponding to the set screw is also provided on the side wall of the mounting portion; the locking nut abuts against the positioning surface.

2. The installation structure of a screw cold heading punch according to claim 1, characterized in that First through holes are provided at the four corners of the mounting plate.

3. The installation structure of a screw cold heading punch according to claim 2, characterized in that, First threaded holes are provided at the four corners of the rear side of the connecting plate, and the fixing bolts pass through the first through holes and engage with the first threaded holes.

4. A screw cold heading punch installation structure according to claim 1, characterized in that, The diameter of the mounting hole is one-half of the diameter of the cylindrical portion.

5. A cold heading punch mounting structure according to claim 1, characterized in that The width of the positioning surface is larger than the diameter of the curved portion of the set screw.

6. The installation structure of a screw cold heading punch according to claim 1, characterized in that, The positioning surface is inclined inwards.

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