CN211778853U

CN211778853U - Knurled worm shaft

Info

Publication number: CN211778853U
Application number: CN202020383781.8U
Authority: CN
Inventors: 陶涛
Original assignee: Shenzhen Wanbo Worm Products Co ltd
Current assignee: Guangdong Wanbo Worm Gear Co ltd
Priority date: 2020-03-23
Filing date: 2020-03-23
Publication date: 2020-10-27
Anticipated expiration: 2030-03-23

Abstract

The utility model relates to the technical field of worms, in particular to a knurled worm shaft, which comprises a shaft body, wherein the two ends of the shaft body are respectively connected with a first connecting shaft and a second connecting shaft, the front end of the first connecting shaft is connected with worm teeth, the outer wall of the first connecting shaft and the outer wall of the second connecting shaft are both provided with knurls, and the outer wall of the shaft body is provided with a plurality of grooves which are distributed at intervals along the circumferential direction of the shaft body; the outer wall of first connecting axle and the outer wall of second connecting axle all are equipped with the annular knurl, can increase the friction between first connecting axle and second connecting axle and other assembly structure, make worm axle assembly back more stable.

Description

Knurled worm shaft

Technical Field

The utility model relates to a worm technical field, concretely relates to annular knurl worm axle.

Background

The worm transmission is a gear transmission between staggered shafts formed by meshing worm teeth of a worm wheel and worm shafts, is widely applied to machinery or equipment such as machine tools, automobiles, instruments and the like, and has the characteristics of large transmission ratio, stable transmission, compact structure, no noise, self-locking property and the like. In practical use, some worm shafts and worm teeth are complex to process and inconvenient to install, and the worm shafts are easy to shake during assembly, so that the overall assembly stability is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to the not enough among the prior art, and provide a knurling worm axle that the assembly is more stable.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a knurling worm axle, includes the axis body, and the both ends of axis body are connected with first connecting axle and second connecting axle respectively, and the front end of first connecting axle is connected with the worm-gear, the outer wall of first connecting axle with the outer wall of second connecting axle all is equipped with the annular knurl, the outer wall of axis body is equipped with along a plurality of recesses of its circumference interval distribution.

The four grooves are uniformly distributed on the outer wall of the shaft body, and the extending direction of the grooves is parallel to the axial direction of the shaft body.

The rear end of the second connecting shaft is connected with a third connecting shaft, and threaded through holes are formed in the first connecting shaft and the third connecting shaft.

The rear end of the third connecting shaft is connected with a fourth connecting shaft, and a clamping part convenient to install and debug is arranged on the fourth connecting shaft.

The clamping parts are two, and the two clamping parts are correspondingly arranged on the outer wall of the fourth connecting shaft.

Wherein, the clamping part is a flat-plate-shaped groove.

The rear end of the fourth connecting shaft is provided with a fifth connecting shaft, the circumferential outer wall of the fifth connecting shaft is provided with an external spline, and the end part of the fifth connecting shaft is provided with a chamfer.

The worm shaft is made of 40Cr, and the worm teeth are subjected to quenching and carburizing treatment.

The utility model has the advantages that: knurls are arranged on the outer wall of the first connecting shaft and the outer wall of the second connecting shaft, so that friction between the first connecting shaft and the second connecting shaft and other assembling structures can be increased, and the worm shaft is more stable after being assembled; the outer wall of the shaft body is provided with grooves distributed at intervals along the circumferential direction of the shaft body, and the grooves enable the outer wall surface of the shaft body to be a concave-convex structural surface, so that the assembled worm shaft is more stable; the whole worm shaft is simple in structure and convenient to process and install.

Drawings

The present invention is further explained by using the drawings, but the embodiments in the drawings do not constitute any limitation to the present invention, and for those skilled in the art, other drawings can be obtained according to the following drawings without any inventive work.

Fig. 1 is a schematic structural view of the knurled worm shaft of the present invention.

Fig. 2 is a cross-sectional view taken from a-a in fig. 2.

Fig. 1 and 2 include:

the connecting shaft comprises a shaft body 1, a first connecting shaft 2, a worm gear 3, a second connecting shaft 4, a third connecting shaft 5, a fourth connecting shaft 6, a fifth connecting shaft 7, knurls 8, grooves 9, through holes 10, clamping portions 11 and external splines 12.

Detailed Description

The invention will be further described with reference to the following examples.

The utility model discloses a concrete implementation mode of annular knurl worm axle, as shown in fig. 1 and 2, including axis body 1, the front end of axis body 1 has connected gradually first connecting axle 2 and worm gear 3, and the rear end of axis body 1 has connected gradually second connecting axle 4, third connecting axle 5, fourth connecting axle 6 and fifth connecting axle 7, whole worm axle simple structure, processing simple to operate.

The outer wall of the first connecting shaft 2 and the outer wall of the second connecting shaft 4 are both provided with knurls 8, so that the friction between the first connecting shaft 2 and the second connecting shaft 4 and other assembling structures can be increased, and the worm shaft is more stable after being assembled. The outer wall of axis body 1 is equipped with along its circumference interval distribution's recess 9, and the extending direction of recess 9 is parallel with the axis of axis body 1. Set up recess 9 and make the outer wall surface of axis body 1 be unsmooth structural plane for worm axle assembly back is more stable. The quantity of recess 9 is equipped with four, and four recess 9 evenly distributed are at the outer wall of axis body 1, and the worm axle is at the assembling-process, and the atress is even, further increases the stability of assembly.

Through-hole 10 has all been seted up on first connecting axle 2 and the third connecting axle 5, wherein in first connecting axle 2, annular knurl 8 is located the one end of first connecting axle 2, and through-hole 10 is located the other end of first connecting axle 2. During assembly, the connecting rod with the external thread is inserted into the through hole 10, so that the worm shaft and the power device can be further fixed, the worm shaft and the power device can be firmly connected together, and the worm gear worm rack is simple to assemble, firm to assemble and effectively prolongs the service life of a product.

The fourth connecting shaft 6 is provided with two clamping portions 11, the clamping portions 11 are flat grooves 9, and the two clamping portions 11 are correspondingly arranged on the outer wall of the fourth connecting shaft 6. When debugging is needed, the axial direction and the circumferential direction of the worm shaft can be adjusted by clamping the clamping part 11 by a tool, so that the position of the worm teeth 3 of the worm shaft can be conveniently adjusted, and the outer surface of the fourth connecting shaft 6 cannot be damaged.

The circumference outer wall of fifth connecting axle 7, the circumference outer wall of fourth connecting axle 6 all are equipped with external splines 12, and external splines 12 of fourth connecting axle 6 are located the one end that fourth connecting axle 6 is close to third connecting axle 5, utilize external splines 12 to connect and carry out the transmission to adopt other transmission methods such as flat key or threaded connection more reliable and more stable, the transmission is more steady. The end of the fifth connecting shaft 7 is provided with a chamfer.

The material of the worm shaft is 40Cr, and the worm teeth 3 are quenched and carburized, so that the hardness of the worm teeth 3 is higher, and the worm teeth are not easy to wear when being meshed with a worm wheel.

It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A knurled worm shaft, characterized in that: including the axis body, the both ends of axis body are connected with first connecting axle and second connecting axle respectively, and the front end of first connecting axle is connected with the worm gear, the outer wall of first connecting axle with the outer wall of second connecting axle all is equipped with the annular knurl, the outer wall of axis body is equipped with along its circumference interval distribution's a plurality of recesses.

2. A knurled worm shaft according to claim 1, characterized in that: the recess is equipped with four, four recess evenly distributed at the outer wall of axis body, the extending direction of recess with the axial direction of axis body is parallel.

3. A knurled worm shaft according to claim 1, characterized in that: the rear end of the second connecting shaft is connected with a third connecting shaft, and threaded through holes are formed in the first connecting shaft and the third connecting shaft.

4. A knurled worm shaft according to claim 3, characterized in that: the rear end of the third connecting shaft is connected with a fourth connecting shaft, and a clamping part convenient to install and debug is arranged on the fourth connecting shaft.

5. A knurled worm shaft according to claim 4, characterized in that: the clamping parts are two, and the two clamping parts are correspondingly arranged on the outer wall of the fourth connecting shaft.

6. A knurled worm shaft according to claim 5, characterized in that: the clamping part is a flat-plate-shaped groove.

7. A knurled worm shaft according to claim 4, characterized in that: the rear end of the fourth connecting shaft is provided with a fifth connecting shaft, the circumferential outer wall of the fifth connecting shaft is provided with an external spline, and the end part of the fifth connecting shaft is provided with a chamfer.

8. A knurled worm shaft according to any of claims 1-7, characterized in that: the worm shaft is made of 40Cr, and the worm teeth are subjected to quenching and carburizing treatment.