CN213195456U

CN213195456U - Screw thread processing device for fastening bolt

Info

Publication number: CN213195456U
Application number: CN202021400438.6U
Authority: CN
Inventors: 蒋杨英; 王立顺; 林志峰; 陈彦霖
Original assignee: ZHOUSHAN 7412 FACTORY
Current assignee: ZHOUSHAN 7412 FACTORY
Priority date: 2020-07-15
Filing date: 2020-07-15
Publication date: 2021-05-14
Anticipated expiration: 2030-07-15

Abstract

The utility model provides a fastening bolt's screw thread processingequipment, includes the screw plate the distribution has the thread rolling arch that can thread on fastening bolt's the body of rod on the thread rolling face of screw plate, its characterized in that: and a plane with thread rolling bulges removed is arranged in the upper area of the thread rolling surface of the thread rolling plate, and an angle rolling bulge capable of rolling a cone angle on the cold heading section of the fastening bolt is convexly arranged in the plane. The utility model has the advantages that: the special machine tool for twisting the cone angle is omitted, the cone angle at the top end of the bolt is directly twisted out through the cone angle protrusion on the thread rolling plate while the thread is twisted, the integrated processing of the thread and the cone angle is realized, the processing efficiency is high, the processing effect is good, the production cost is saved, and the maintenance cost of the processing device is greatly reduced.

Description

Screw thread processing device for fastening bolt

Technical Field

The utility model relates to a bolt preparation technical field especially indicates a fastening bolt's thread processing device.

Background

The existing Chinese patent application with the application number of CN201510985679.9 entitled "a screw plate" discloses a screw plate, which comprises a screw plate body, wherein the upper surface of the screw plate body is provided with an anti-falling block and a plurality of threads, the upper surface of the screw plate body is provided with jacks arranged in a rectangular shape, one end of the anti-falling block is seamlessly connected with the jacks, the other end of the anti-falling block is arranged in a corrugated shape, the wavelength direction is parallel to the length direction of the threads, the wave troughs of the corrugations are lower than the heights of the threads, the wave peaks of the corrugations are higher than the heights of the threads, the corrugations are provided with two wave crests and one wave trough, and the distance between every two adjacent wave crests and the wave trough is 3-7 mm. The invention has the following beneficial effects: the thread rolling plate body is arranged to be a cuboid, the thread rolling plate is simple to manufacture and convenient to assemble, the anti-falling parts are arranged on the oblique opposite angles of the upper surface of the thread rolling plate body, two bolts can be machined simultaneously in work, and the utilization rate and the working efficiency of materials are improved. However, when the screw plate is used for machining a fastening bolt with a taper angle, a special lathe is required to lathe the taper angle at the end of the bolt, and the machining efficiency is low, so that the structure of the screw plate needs to be further improved.

Disclosure of Invention

The utility model aims to solve the technical problem that a fastening bolt's thread machining device that screw thread and cone angle once processed is realized to above-mentioned prior art current situation and provide a thread machining efficiency height.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: this fastening bolt's screw thread processingequipment, including the screw plate it is protruding that the thread rolling that can go out the screw thread on fastening bolt's the body of rod distributes on the thread rolling face of screw plate, its characterized in that: and a plane with thread rolling bulges removed is arranged in the upper area of the thread rolling surface of the thread rolling plate, and an angle rolling bulge capable of rolling a cone angle on the cold heading section of the fastening bolt is convexly arranged in the plane.

As an improvement, the angle-twisting bulge is an oblique strip body, one end of the angle-twisting bulge is low, the other end of the angle-twisting bulge is high, the end of the angle-twisting bulge, which is low in height, is closer to the lower area of the thread rolling surface relative to the end of the angle-twisting bulge, and therefore a cone angle can be twisted on the cold heading section when the cold heading section of the fastening bolt rotates relative to the thread rolling surface.

In a further improvement, the vertical distance between the projection from the high end to the low end on the rubbing angle protrusion is the same as the vertical height from the high end to the plane of the plane area.

As an improvement, the corresponding thread rolling plate on the plane is provided with a thread rolling plate gap, the angle rolling bulge is connected to an angle rolling plate, and the angle rolling plate is embedded and fixed in the thread rolling plate gap.

The improved structure is characterized in that the angle twisting plate and the thread rolling plate are detachably connected to the same positioning plate, or the angle twisting plate is bonded in the notch of the thread rolling plate through glue.

Further improved, the thickness of the angle twisting plate is the same as that of the thread rolling plate.

In a further improvement, the top surface of the angle twisting plate is divided into an upper plane and a lower plane by the angle twisting protrusion, and the height of the upper plane is lower than that of the lower plane.

In a further improvement, a second thread rolling surface is arranged at one end of the lower plane, and second thread rolling bulges capable of rolling threads on the cold heading section are distributed on the second thread rolling surface.

As an improvement, the plane is divided into a transition plane without bulges and a rubbing angle plane provided with rubbing angle bulges.

As an improvement, the plane is positioned in the right upper area of the thread rolling surface, and the left end of the angle rolling bulge is higher than the right end of the angle rolling bulge

Compared with the prior art, the utility model has the advantages of: the special machine tool for twisting the taper angle is omitted, the taper angle at the top end of the bolt is directly twisted out through the taper angle bulge on the thread rolling plate while the thread is twisted, the integrated processing of the thread and the taper angle is realized, the processing efficiency is high, the processing effect is good, the production cost is saved, and the maintenance cost of the processing device is greatly reduced; the vertical distance between the projection of the high end of the rubbing angle protrusion and the projection of the low end of the rubbing angle protrusion can be preferably the same as the vertical height from the high end to the plane of the plane area, so that a conical surface with an inclined plane of 45 degrees can be processed at the end part of the fastening bolt, a conical angle with a plane projection included angle of 90 degrees is manufactured at the end part of the fastening bolt, the manufacturing process requirement of the fastening bolt with a large conical angle of 90 degrees is met, the yield is high, and the production cost is further reduced.

Drawings

Fig. 1 is a perspective view of an embodiment of the present invention;

FIG. 2 is an exploded view of the structure of FIG. 1;

FIG. 3 is a side elevational view of FIG. 2;

FIG. 4 is a bottom view of FIG. 2;

FIG. 5 is a view showing the effect of the fastening bolt of FIG. 1 in the process;

FIG. 6 is an exploded view of the structure of FIG. 5;

FIG. 7 is an enlarged view of portion I of FIG. 1;

fig. 8 is a front projection view of the fastening bolt machined in fig. 5.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 8, the thread processing apparatus for fastening bolt of the present embodiment includes a screw plate 1, wherein thread rolling protrusions 111 capable of rolling threads on a rod body 21 of a fastening bolt 2 are distributed on a thread rolling surface 11 of the screw plate 1, a plane 12 with the thread rolling protrusions 111 removed is disposed in an upper region of the thread rolling surface 11 of the screw plate 1, and a corner rolling protrusion 121 capable of rolling a taper angle 23 on a cold heading section 22 of the fastening bolt 2 is convexly disposed in the plane 12. The fillet protrusions 121 are slanted bars having one end with a low height and the other end with a high height and the other end with a relatively high height closer to the lower region 13 of the thread rolling surface so as to twist the taper angle 23 on the cold heading section 22 when the cold heading section 22 of the fastening bolt 2 rotates relative to the thread rolling surface 11. The vertical distance S between the projection from the high end to the low end on the rubbing angle protrusion 121 is the same as the vertical height H from the high end to the plane of the plane area. This enables a taper angle of 90 ° to be twisted out.

The corresponding screw plate 1 of the plane 12 is provided with a screw plate gap 14, the angle twisting bulge 121 is connected to the angle twisting plate 3, and the angle twisting plate 3 is embedded and fixed in the screw plate gap 14. The angle twisting plate 3 and the screw plate 1 are detachably connected on the same positioning plate, or the angle twisting plate 3 is bonded in the screw plate notch 14 through glue. The thickness of the angle twisting plate 3 is the same as that of the screw plate 1. The top surface of the corner twisting plate 3 is divided into an upper plane 31 and a lower plane 32 by the corner twisting protrusion 121, and the height of the upper plane 31 is lower than that of the lower plane 32. The chips generated by the cone angle can move from the upper plane 31 to the outside of the screw plate 1, and the cleaning efficiency is improved.

A second thread rolling surface 321 is arranged at one end of the lower plane 32, and second thread rolling protrusions capable of rolling threads on the cold heading section 22 are distributed on the second thread rolling surface 321. The plane 12 is divided into a transition plane 122 without protrusions and a rubbing angle plane provided with rubbing angle protrusions 121. The plane 12 is located at the upper right region of the thread rolling surface 11, and the left end of the angle rolling protrusion 121 is higher than the right end of the angle rolling protrusion 121.

For the fastening bolt with the large taper angle of 90 degrees produced in large batch, the original forming process comprises cold heading, degreasing, taper angle turning and thread twisting, the taper angle turning uses a special machine or an instrument lathe, and the new forming process comprises the cold heading, the thread twisting and the taper angle forming together by improving the structural design of the thread rolling plate, so that the production efficiency of products is improved, the production period is shortened, the production cost is greatly reduced, and the management cost of purchasing, maintaining and maintaining special machine equipment is also reduced. The structural design of the thread rolling die mainly adopts the mode of embedding and combining the machine thread die and the cone rolling angle die together for molding, and meets the high technical requirements of the steam standard parts such as circular arc transition of thread roots, no folding of threads and the like while ensuring the appearance and the size requirements of products.

Claims

1. The utility model provides a fastening bolt's screw thread processingequipment, includes screw plate (1) it has thread rolling arch (111) that can go out the screw thread on body of rod (21) of fastening bolt (2) to distribute on thread rolling face (11) of screw plate (1), its characterized in that: the upper area of the thread rolling surface (11) of the thread rolling plate (1) is provided with a plane (12) without thread rolling protrusions (111), and the plane (12) is convexly provided with a thread rolling protrusion (121) capable of rolling a taper angle (23) on a cold heading section (22) of a fastening bolt (2).

2. The thread forming apparatus according to claim 1, wherein: the angle-twisting protrusion (121) is an oblique strip body, one end of which is low in height, the other end of which is high in height, and the end of which is relatively high in height is closer to the lower area (13) of the thread rolling surface, so that a taper angle (23) can be formed on the cold heading section (22) when the cold heading section (22) of the fastening bolt (2) rotates relative to the thread rolling surface (11).

3. The thread forming apparatus according to claim 2, wherein: the vertical distance (S) between the projection from the high end to the low end on the rubbing angle bulge (121) is the same as the vertical height (H) from the high end to the plane of the plane area.

4. A thread processing apparatus according to any one of claims 1 to 3, wherein: the thread rolling plate (1) corresponding to the plane (12) is provided with a thread rolling plate notch (14), the angle rolling bulge (121) is connected to the angle rolling plate (3), and the angle rolling plate (3) is embedded and fixed in the thread rolling plate notch (14).

5. The thread forming apparatus according to claim 4, wherein: the angle twisting plate (3) and the screw plate (1) are detachably connected to the same positioning plate, or the angle twisting plate (3) is bonded in the screw plate notch (14) through glue.

6. The thread forming apparatus according to claim 4, wherein: the thickness of the angle twisting plate (3) is the same as that of the thread rolling plate (1).

7. The thread forming apparatus according to claim 4, wherein: the top surface of the angle twisting plate (3) is divided into an upper plane (31) and a lower plane (32) by an angle twisting bulge (121), and the height of the upper plane (31) is lower than that of the lower plane (32).

8. The thread forming apparatus according to claim 7, wherein: and a second thread rolling surface (321) is arranged at one end of the lower plane (32), and second thread rolling bulges capable of rolling threads on the cold heading section (22) are distributed on the second thread rolling surface (321).

9. A thread processing apparatus according to any one of claims 1 to 3, wherein: the plane (12) is divided into a transition plane (122) without bulges and a twisting angle plane provided with twisting angle bulges (121).

10. A thread processing apparatus according to any one of claims 1 to 3, wherein: the plane (12) is located in the right upper area of the twisting surface (11), and the left end of the angle twisting bulge (121) is higher than the right end of the angle twisting bulge (121).