CN218134699U

CN218134699U - Core rod ring line rolling tool

Info

Publication number: CN218134699U
Application number: CN202221992623.8U
Authority: CN
Inventors: 王健; 黄亮; 施富荣; 杨萍
Original assignee: Guizhou Hangrui Science & Technology Co ltd
Current assignee: Guizhou Hangrui Science & Technology Co ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2022-12-27
Anticipated expiration: 2032-07-29

Abstract

The application relates to a titanium alloy blind rivet rolling tool, and particularly discloses a mandrel ring-thread rolling tool which comprises a main shaft and a thread rolling wheel, wherein the thread rolling wheel comprises an outer thread rolling wheel and an inner thread rolling wheel, the outer thread rolling wheel is provided with a circumferential surface, the outer thread rolling wheel is fixed on the main shaft, the main shaft is connected with a driving device, the main shaft can rotate along a central shaft through the driving device, and ring threads are arranged on the circumference of the outer thread rolling wheel; the inner thread rolling wheel is horizontally arranged outside the outer thread rolling wheel, an inward concave arc surface is arranged on the inner thread rolling wheel, the arc surface is parallel to the circumferential surface of the outer thread rolling wheel, and annular grains are also arranged on the arc surface. The small-diameter ring groove rolling processing of the self-plugging rivet can be adapted to the scheme.

Description

Core rod ring line rolling tool

Technical Field

The utility model relates to a titanium alloy self-plugging rivet roll extrusion process, concretely relates to core rod ring line roll extrusion frock.

Background

The traditional thread rolling machine is not suitable for rolling the small-diameter ring groove. Mainly embodies the following aspects: 1. the existing thread rolling machine mostly adopts a rolling mode that two thread rolling wheels rotate simultaneously, and adopts hydraulic rotation control, so that the size control is unstable due to hydraulic expansion and contraction caused by heat and cold; 2. the diameter of the thread rolling wheel is too large, the diameter reaches 150mm to 170mm, and the rolled small product is not easy to position; 3. the processing quantity is large, the use frequency is high, and the wear resistance is required to be high; 4. the equipment installation space is limited, the required thread rolling wheel has small size and simple structure, and is convenient to process, produce, process and manufacture. Therefore, depending on the size requirement of the actual product and the actual processing environment, a new improvement solution is needed to solve the existing problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a core rod ring line roll extrusion frock to adapt to self-plugging rivet's minor diameter annular roll extrusion processing.

The utility model discloses a basic scheme does: a mandrel ring grain rolling tool comprises a main shaft and a thread rolling wheel, wherein the thread rolling wheel comprises an outer thread rolling wheel and an inner thread rolling wheel, the outer thread rolling wheel is provided with a circumferential surface, the outer thread rolling wheel is fixed on the main shaft, the main shaft is connected with a driving device, the main shaft can rotate along a central shaft through the driving device, and ring grains are arranged on the circumference of the outer thread rolling wheel; the inner thread rolling wheel is horizontally arranged outside the outer thread rolling wheel, an inward concave arc surface is arranged on the inner thread rolling wheel and parallel to the circumferential surface of the outer thread rolling wheel, annular grains are also arranged on the arc surface and protrude out of the arc surface and the circumferential surface, and the annular grains are positioned at the upper ends of the arc surface and the circumferential surface and are close to the upper surface of the thread rolling wheel.

The beneficial effect of this basic scheme does: compared with the traditional rolling mode of relative movement of two rollers of the thread rolling wheel in positive and negative rotation, the tool principle of the scheme adopts the rotation of the external thread rolling wheel, the semi-circular internal thread rolling wheel is static to roll the product, the structure is simpler, the rivet can automatically roll along the external thread rolling wheel, and the gap is two parallel cambered surfaces, so that the self-positioning effect is realized on the rivet, and the rivet does not need to be positioned; the size of the tool is smaller, the inner thread rolling wheel does not need to be used as a complete wheel, and compared with a double-roller wheel, the size can be reduced by more than 1/3; the stability of length when keeping processing, the length of interior tooth thread rolling wheel is certain, and the rivet rolls after the certain distance and discharges from the gap, and time control is accurate, and the product size that the above frock advantage made this frock roll is more stable.

Furthermore, the interior thread rolling wheel is internally provided with vertical threaded holes, the interior thread rolling wheel is fixed on an external rack through the threaded holes, and the number of the threaded holes is at least 2.

Furthermore, a main shaft hole is formed in the middle shaft of the external thread rolling wheel, and the external thread rolling wheel is connected with the main shaft through the main shaft hole key. The key-type connection has higher bearing capacity, and centering accuracy is high, and the guide performance is good.

Furthermore, the external thread rolling wheel is disc-shaped, the diameter of the external thread rolling wheel is 50-70 mm, and the thickness of the external thread rolling wheel is 10-20 mm. The equipment installation space is limited, the thread rolling wheel has small size and simple structure, and is convenient to process, produce, process and manufacture.

Furthermore, the thread pitch of the ring grains is 0.5 mm-0.7 mm. The fine teeth have better self-locking property

Furthermore, the tooth form angle of the ring grain is 50-70 degrees. To make uniform contact between the workpiece and the ring

Furthermore, the tooth height of the ring grain is 0.1-0.3mm. The design is carried out according to the production requirement of the pretightening force of the rivet core rod.

Drawings

Fig. 1 is a schematic diagram of an embodiment of the present invention.

Fig. 2 is a schematic front view of an external thread rolling die according to an embodiment of the present invention.

Fig. 3 is a schematic side view of an external thread rolling die according to an embodiment of the present invention.

Fig. 4 is a schematic front view of an internal thread rolling die according to an embodiment of the present invention.

Fig. 5 is a schematic side view of an internal thread rolling die according to an embodiment of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the thread rolling die comprises an outer thread rolling die 1, an inner thread rolling die 2, a circumferential surface 3, a ring grain 4, an arc surface 5, a spindle hole 6 and a threaded hole 7.

Embodiments are substantially as shown in figures 1 to 5 of the accompanying drawings:

a mandrel ring thread rolling tool comprises a main shaft and a thread rolling wheel, wherein the thread rolling wheel comprises an outer thread rolling wheel 1 and an inner thread rolling wheel 2, a circumferential surface 3 is arranged on the outer thread rolling wheel 1, a main shaft hole 6 is formed in the middle shaft of the outer thread rolling wheel 1, and the outer thread rolling wheel 1 is fixed on the main shaft through a main shaft hole 6 key. The main shaft is connected with a driving device, the main shaft can rotate along the central shaft through the driving device, and the circumferential surface 3 of the external thread rolling wheel 1 is provided with annular grains 4. Vertical threaded holes 7 are formed in the inner thread rolling wheel 2, the inner thread rolling wheel 2 can be horizontally installed outside the outer thread rolling wheel 1 through threaded connection, an inward concave circular arc surface 5 is formed in the inner thread rolling wheel 2, the circular arc surface 5 is parallel to the circumferential surface 3 of the outer thread rolling wheel 1, annular patterns 4 are also arranged on the circular arc surface 5, the annular patterns 4 protrude out of the circular arc surface 5 and the circumferential surface 3, the annular patterns 4 are located at the upper ends of the circular arc surface 5 and the circumferential surface 3 and are close to the upper surface of the thread rolling wheel, the circumferential surface 3 of the outer thread rolling wheel 1 is parallel to the circular arc surface 5 of the inner thread rolling wheel 2, and products to be rolled can be just placed in the distance between the circumferential surface 3 and the circular arc surface 5.

Compare the mode that traditional thread rolling wheel two-wheeled just reverse relative motion rolled, the frock principle of this scheme adopts outer tooth thread rolling wheel to rotate, and tooth thread rolling wheel static rolls the product in the semicircle. Compared with the traditional rolling mode of two-wheel forward and reverse relative motion rolling, the structure is simpler, the rivet can roll along the outer rolling wheel in a self-transmission way, and the gap is two parallel cambered surfaces, so that the rivet has a self-positioning effect and does not need to be positioned; the size of the tool is smaller, the inner thread rolling wheel does not need to be used as a complete wheel, and compared with a double-roller wheel, the size can be reduced by more than 1/3; the stability of length when keeping processing, the length of interior tooth thread rolling wheel is certain, and the rivet rolls after the certain distance and discharges from the gap, and time control is accurate, and the product size that the above frock advantage made this frock roll is more stable. The external thread rolling die 1 is disk-shaped and has a diameter of 60mm and a thickness of 15mm. The thread pitch of the ring 4 is 0.5 mm-0.7 mm. The tooth form angle of the ring grain 4 is 50-70 degrees. The tooth height of the ring 4 is 0.1-0.3mm.

The specific implementation process is as follows:

the main shaft hole 6 of the external thread rolling wheel 1 is sleeved on the main shaft of the equipment, the external thread rolling wheel is fixed on the main shaft by a compression nut, the semicircular internal thread rolling wheel 2 is installed on the installation seat and is locked by a fixed screw hole, the internal thread rolling wheel 2 and the external thread rolling wheel 1 are adjusted to be horizontal, the driving equipment is started, and the external thread rolling wheel 1 rotates according to an arrow shown in figure 1. And placing the product at the position shown in the figure, rotating and revolving along the outer thread rolling wheel 1 under the rotating extrusion of the outer thread rolling wheel 1, and dropping out from the other opening between the thread rolling wheels to finish the ring groove processing procedure of the product.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the schemes is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The utility model provides a core rod ring line roll extrusion frock, includes main shaft and thread rolling wheel, its characterized in that: the thread rolling wheel comprises an outer thread rolling wheel and an inner thread rolling wheel, the outer thread rolling wheel is provided with a circumferential surface, the outer thread rolling wheel is fixed on the main shaft, the main shaft is connected with a driving device, the main shaft can rotate through the driving device, and the circumference of the outer thread rolling wheel is provided with annular threads; the inner thread rolling die is horizontally arranged outside the outer thread rolling die, an inward concave circular arc surface is arranged on the inner thread rolling die and is parallel to the circumferential surface of the outer thread rolling die, annular grains are also arranged on the circular arc surface and protrude out of the circular arc surface and the circumferential surface, and the annular grains are located at the upper ends of the circular arc surface and the circumferential surface and are close to the upper surface of the thread rolling die.

2. The mandrel ring rolling tool according to claim 1, wherein: the internal thread rolling wheel is internally provided with vertical threaded holes, the internal thread rolling wheel is fixed on an external rack through the threaded holes, and the number of the threaded holes is at least 2.

3. The mandrel ring rolling tool according to claim 1, wherein: the central shaft of the external thread rolling wheel is provided with a main shaft hole, and the external thread rolling wheel is connected with the main shaft through the main shaft hole key.

4. The mandrel ring rolling tool according to claim 1, wherein: the external thread rolling wheel is disc-shaped, the diameter of the external thread rolling wheel is 50-70 mm, and the thickness of the external thread rolling wheel is 10-20 mm.

5. The mandrel ring rolling tool according to claim 1, wherein: the thread pitch of the ring grains is 0.5 mm-0.7 mm.

6. The mandrel ring rolling tool according to claim 1, wherein: the tooth form angle of the ring grain is 50-70 degrees.

7. The mandrel ring rolling tool according to claim 1, wherein: the tooth height of the ring grain is 0.1-0.3mm.