CN217748915U

CN217748915U - Punching needle

Info

Publication number: CN217748915U
Application number: CN202221710777.3U
Authority: CN
Inventors: 钭俊龙
Original assignee: Zhejiang Qunying Vehicles Co Ltd
Current assignee: Zhejiang Qunying Vehicles Co Ltd
Priority date: 2022-07-01
Filing date: 2022-07-01
Publication date: 2022-11-08
Anticipated expiration: 2032-07-01

Abstract

The utility model discloses a needle punches a hole belongs to mechanical technical field, and aim at overcomes the current needle that punches a hole's effective pore wall is shallower defect. The punching needle comprises a cylindrical upper section and a conical lower section, the lower end face of the lower section is circular or polygonal, and the lower section is provided with an inclined side face which smoothly transitions from the lower end face to the upper end. The punching needle firstly enables the target metal piece to deform in a small range, the size of the hole is gradually increased from bottom to top along the inclined side face, the hole wall can be better attached to the punching needle, the hole is expanded into a round hole by the upper section, and the longer effective hole wall is attached to the punching needle, so that the length of the effective hole wall is increased.

Description

Punching needle

Technical Field

The utility model belongs to the technical field of machinery, a needle punches a hole is related to.

Background

The existing punching needle head part is generally cylindrical, as shown in fig. 1, the sinking range of a punched hole is large, an effective hole wall h capable of being provided with threads is shallow, and the formed threaded hole is not favorable for being firmly and stably matched with a screw.

In the prior art, the hole is drilled through hot melting drilling, the effective hole wall which can be formed is long, but the hot melting drilling is low in hole drilling efficiency, the drill bit is high in cost, and the loss is large.

Disclosure of Invention

The utility model discloses the problem to prior art existence provides the needle that punches a hole, and aim at overcomes the current defect that effective pore wall is shallower in the hole that punches a hole needle.

The utility model discloses a realize like this:

the punching needle is characterized by comprising a cylindrical upper section and a conical lower section, wherein the lower end face of the lower section is circular or polygonal, and the lower section is provided with an inclined side face which is in smooth transition from the lower end face to the upper end.

The polygon is a triangle, a square or a rectangle.

The upper end of the lower section is provided with a columnar connecting part extending upwards, the lower end of the upper section is provided with a connecting groove with a downward opening, the connecting part is inserted into the connecting groove, the top of the connecting groove is provided with a first magnet, and the connecting part is adsorbed on the first magnet.

The top of connecting portion is equipped with the second magnet, connecting portion pass through the second magnet and adsorb on the first magnet.

The outer diameter of the connecting groove is larger than the outer diameters of the first magnet and the second magnet.

The lower end of the upper section has an annular inclined wall that joins the inclined side surface and the vertical wall of the upper section.

The utility model provides a punching needle makes the target metalwork form minim deformation earlier, and the size in hole increases gradually along the inclined side from bottom to top for the pore wall can laminate better on punching needle, expands into the round hole with the hole by the upper segment at last, has longer effective pore wall laminating this moment on punching needle, thereby improves the length of effective pore wall.

Drawings

FIG. 1 is a schematic view of a prior art punching process;

FIG. 2 is a schematic view of the punching process of the present invention;

FIG. 3 is a schematic structural view of a punching pin with a circular lower end face;

FIG. 4 is a schematic structural view of a punching pin with a rectangular lower end surface;

FIG. 5 is a schematic structural view of a punching pin with a triangular lower end surface;

FIG. 6 is a schematic structural view of a punching pin with a square lower end surface;

FIG. 7 is a cross-sectional view of the punching pin;

fig. 8 is a schematic sectional structure diagram of the upper section.

Reference is made to the accompanying drawings in which: 100. an upper section; 110. connecting grooves; 120. a first magnet; 130. an inclined wall; 140. a vertical wall; 200. a lower section; 210. a lower end face; 220. a beveled side; 230. a connecting portion; 240. a second magnet; 300. a metal piece.

Detailed Description

The following detailed description is made of specific embodiments of the present invention with reference to the accompanying drawings, so as to make the technical solution of the present invention easier to understand and master. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The present embodiment provides a punching needle, as shown in fig. 2 to 8, comprising a cylindrical upper section 100 and a conical lower section 200, wherein the lower end surface 210 of the lower section 200 is circular or polygonal, and the lower section 200 has an inclined side surface 220 that smoothly transitions from the lower end surface 210 to the upper end. When the lower end surface 210 is circular, the lower segment 200 is in the shape of a circular truncated cone, the lower end surface 210 is polygonal, and the smooth transition gradually changes from the polygonal shape to the circular shape.

The lower section 200 of conical shape can make target metal spare 300 form the deformation of minim scope earlier, and the horizontal deformation scope is less promptly, along with the increase of vertical deflection, the size in hole is crescent along inclined side 220 from bottom to top for the pore wall can laminate better on the punching needle, expands into the round hole by upper segment 100 with the hole at last, has longer effective pore wall H and laminates on the punching needle this moment, thereby improves the length of effective pore wall. For boring through the hot melt, the utility model discloses the needle of punching a hole can be used for directly punching a hole at a high speed to the metalwork, and efficiency is higher.

The polygon is a triangle, a square or a rectangle, and polygons with different shapes can adapt to metal pieces 300 with different hardness. The upper end of the lower section 200 has a column-shaped connecting portion 230 extending upward, the lower end of the upper section 100 has a connecting groove 110 with a downward opening, the connecting portion 230 is inserted into the connecting groove 110, the top of the connecting groove 110 is provided with a first magnet 120, and the connecting portion 230 is adsorbed on the first magnet 120. Can be so that hypomere 200 and upper segment 100 can dismantle the connection, be convenient for change the hypomere 200 of different models, the connection easy dismounting is inhaled to magnetism. The lower section 200 and the upper section 100 can be made of different materials, and the lower section 200 can be made of a more wear-resistant material, so that the cost increase is reduced when the service life of the punching needle is prolonged.

When the punching needle is used for the metal piece 300 with high hardness, the punching needle with the lower end surface 210 with fewer polygonal edges is preferably adopted, so that the edge of the lower section 200 is sharp, the punching needle can penetrate through the metal piece 300 quickly, and the metal piece 300 is prevented from being deformed in a large-scale downward depression manner. When the punching needle is used for the metal piece 300 with lower hardness, the punching needle with more edges of the lower end face 210 or the lower end face 210 being circular is preferentially adopted, so that the speed of the punching needle penetrating through the metal piece 300 is reduced, and the effective hole wall is prevented from being too short when the punching needle penetrates through the metal piece 300. The lower surface is rectangular and flat, which is suitable for the metal piece 300 with regular metal lines.

As shown in fig. 7, a second magnet 240 is disposed on the top of the connection part 230, and the connection part 230 is attracted to the first magnet 120 by the second magnet 240. Thus, the lower section 200 can be made of a material without magnetic attraction capability, and the material selection space of the lower section 200 is increased.

As shown in fig. 7 to 8, the coupling groove 110 has an outer diameter greater than that of the first and

second magnets

120 and 240. Thus, the top of the connecting part 230 and the top of the connecting groove 110 can be directly abutted, so as to avoid the stress of the magnet and avoid the deformation and damage of the magnet.

As shown in fig. 7-8, the lower end of the upper section 100 has an annular inclined wall 130, and the inclined wall 130 joins the inclined side 220 and the vertical wall 140 of the upper section 100. Therefore, the maximum outer diameter of the inclined side wall is smaller than the outer diameter of the upper section 100, the punching needle needs to be withdrawn from the hole site after the hole site is formed, the inclined wall 130 ensures that the punching process is smooth, and meanwhile, the smaller outer diameter of the lower section 200 prevents the metal piece 300 from contacting the lower section 200, and prevents the lower section 200 from being separated from the upper section 100 due to the fact that the metal piece 300 pulls the lower section 200 downwards.

Claims

1. The punching needle is characterized by comprising a cylindrical upper section (100) and a conical lower section (200), wherein the lower end surface (210) of the lower section (200) is circular or polygonal, and the lower section (200) is provided with an inclined side surface (220) which is in smooth transition from the lower end surface (210) to the upper end.

2. The punch needle of claim 1 wherein the polygon is a triangle, square or rectangle.

3. The punching needle according to claim 1, characterized in that the upper end of the lower section (200) is provided with a column-shaped connecting part (230) extending upwards, the lower end of the upper section (100) is provided with a connecting groove (110) with a downward opening, the connecting part (230) is inserted into the connecting groove (110), the top of the connecting groove (110) is provided with a first magnet (120), and the connecting part (230) is adsorbed on the first magnet (120).

4. The punching needle according to claim 3, characterized in that the top of the connecting part (230) is provided with a second magnet (240), and the connecting part (230) is attracted to the first magnet (120) by the second magnet (240).

5. The punching needle according to claim 4, wherein an outer diameter of the connecting groove (110) is larger than an outer diameter of the first magnet (120) and the second magnet (240).

6. The punching needle according to any of the claims 1 to 5, characterized in that the lower end of the upper section (100) has an annular inclined wall (130), the inclined wall (130) joining the inclined side (220) and the vertical wall (140) of the upper section (100).