CN202883790U

CN202883790U - Cross axle of universal joint

Info

Publication number: CN202883790U
Application number: CN 201220539259
Authority: CN
Inventors: 帅涛
Original assignee: Zhejiang Industry and Trade Vocational College
Current assignee: Zhejiang Industry and Trade Vocational College
Priority date: 2012-10-18
Filing date: 2012-10-18
Publication date: 2013-04-17
Anticipated expiration: 2022-10-18

Abstract

The utility model relates to the technical field of automobile spare parts, in particular to a universal joint of an automobile transmission mechanism and a cross axle of the universal joint. The cross axle of the universal joint comprises a middle green body and four axle heads arranged on the outer side of the middle green body. The four axle heads are arranged in the same plane. The middle green body is divided into a front end face and a back end face with the plane where the four axle heads are located as a boundary, the middle green body and the axle heads are arranged in an integrated molding mode by adopting cold extruding, the middle green body is of a sphere shape, the front end face and the back end face are molded to be round planes, and pits concaved inwards are arranged in the center positions of the front end face and the back end face. Compared with the prior art, the cross axle of the universal joint has the advantages of being simple and attractive in structure and quick in production speed, and saving materials, and mold designing and processing are convenient.

Description

A kind of cross axle of universal joint

Technical field

The utility model relates to the auto parts machinery technical field, is specifically related to the universal joint in the vehicle transmission mechanism, particularly relates to the cross axle of universal joint.

Background technique

At present, transfer of torque mode between the spatial intersecting axle commonly used mainly is to realize by the cross universal joint.Existing universal-joint cross trunnion generally adopts the method for heat forged to be processed into, and large, the follow-up amount of machining of this process energy consumption is large, stock utilization is low, cost of production is high, and timid production environment and noise do not meet environmental requirement.Old friends have designed the employing cold extrusion processing technics and have processed universal-joint cross trunnion, be the Chinese patent " a kind of cold-extrusion universal joint crossing shaft " of CN200820163464.4 such as the patent No., base substrate and four spindle noses that are positioned at the external side of intermediate blank in the middle of comprising, spindle nose and middle base substrate are connected as a single entity, root between two adjacent spindle noses is provided with the right angle shoulder, the orthogonal setting of middle base substrate.The extroversion joint cross axle of said structure increases in stock utilization and manufacturing efficiency, but this shape arranges down, Mould Machining inconvenience, required precision is high, irregular because of its blank shape simultaneously, metal fluidity is poor, and can produce burr after the die wear, difficult the removal is large to the loss of mould.

Summary of the invention

For the deficiency that prior art exists, the purpose of this utility model is to provide the manufacturing of a kind of employing cold extrusion method, and shape arranges rationally, and it is simple to have processing, the universal-joint cross trunnion of the fast and saving material advantage of speed of production.

For achieving the above object, the utility model provides following technological scheme: a kind of cross axle of universal joint, base substrate and four spindle noses that are positioned at the external side of intermediate blank in the middle of including, four spindle noses are positioned at same plane, both sides end face before and after base substrate is divided into middle base substrate take four spindle nose planes of living in as the boundary in the middle of described, middle base substrate and spindle nose adopt the one-body molded setting of cold hobbing, it is characterized in that: base substrate balling-up body shape in the middle of described, both sides, described front and back end face is shaped to circular plane, is provided with the pit that concaves in the central position of both sides, front and back end face.

The utility model further is set to: described pit bottom surface is the plane, the pit bottom surface and described in the middle of between the end face of base substrate successively through inclined-plane, the first cambered surface, the second cambered surface transition.

Further be set to: the axial end of described spindle nose is the setting of evagination hemisphere face again.

Further be set to: described spindle nose root is provided with into the conical surface of cone angle again, and the described conical surface adopts arc surface to be connected transition with middle base substrate.

Further be set to: described cone angle is that 25 degree are to 27 degree again.

By adopting technique scheme, the utility model provides a kind of employing cold hobbing one-time formed cross axle, have following advantage: middle base substrate adopts spherical setting, then be that larger outer convex arc surface connects between adjacent two spindle noses, two ends are showed off and are designed to circular flat simultaneously, this structural design had both met the flowability of metal, can save material again, simultaneously also can satisfy its mechanical property, because its both ends of the surface are circular flat, it is just passable only to need to cut out a hole at mould, greatly facilitate design and the manufacturing of mould, even die wear occurs, it is just passable also only to need to change a little bigger supporting drift of an end, the utility model not only has simple and beautiful structure, the advantage that material is economized, and Design of Dies is easy to process, the advantage that speed of production is fast; The spindle nose root is provided with the conical surface, and the conical surface adopts arc surface to be connected transition with middle base substrate, and the joint intensity between Effective Raise spindle nose and the middle base substrate is set down like this.

Below in conjunction with accompanying drawing the utility model is further described.

Description of drawings

Fig. 1 is the three-dimensional view of the utility model implementation;

Fig. 2 is the structural representation of the utility model implementation.

Embodiment

Referring to accompanying drawing 1, accompanying drawing 2, the cross axle of the disclosed a kind of universal joint of the utility model, base substrate 1 and four spindle noses 2 that are positioned at middle base substrate 1 outside in the middle of including, four spindle noses 2 are positioned at same plane, base substrate 1 is divided into both sides, front and back end face take four spindle noses, 2 planes of living in as the boundary with middle base substrate in the middle of described, and middle base substrate 1 adopts the one-body molded setting of cold hobbings with spindle nose 2.The axial end of wherein said spindle nose 2 is the setting of evagination hemisphere face.1 one-tenth sphere-like of base substrate in the middle of described, both sides, described front and back end face is shaped to circular plane, is provided with the pit 10 that concaves in the central position of both sides, front and back end face; Described pit 10 bottom surfaces are the plane, pit 10 bottom surfaces and described in the middle of between the end face of base substrate 1 successively through inclined-plane 100, the first cambered surface 101, the second cambered surface transition 102; , wherein inclined-plane 100 is more shallow, and the first cambered surface 101 is darker, and the second cambered surface 102 is placed in the middle, and such structure more is conducive to the demoulding in the course of working, so that processing is more convenient, has also saved material simultaneously.

For improving the intensity between spindle nose 2 and the middle base substrate 1, described spindle nose 2 roots are provided with into the conical surface 20 of cone angle, and cone angle is that 25 degree are to 27 degree.The described conical surface 20 adopts arc surface to be connected transition with middle base substrate 1.

During use, with loading onto oil sealing between the root of cross axle and the bearing, load onto bearing at four spindle noses of cross axle again, used in the Motor Vehicle of just universal joint assembly that assembles can being packed into.

Claims

1. the cross axle of a universal joint, base substrate and four spindle noses that are positioned at the external side of intermediate blank in the middle of including, four spindle noses are positioned at same plane, both sides end face before and after base substrate is divided into middle base substrate take four spindle nose planes of living in as the boundary in the middle of described, middle base substrate and spindle nose adopt the one-body molded setting of cold hobbing, it is characterized in that: base substrate balling-up body shape in the middle of described, both sides, described front and back end face is shaped to circular plane, is provided with the pit that concaves in the central position of both sides, front and back end face.

2. the cross axle of described universal joint according to claim 1, it is characterized in that: described pit bottom surface is the plane, the pit bottom surface and described in the middle of between the end face of base substrate successively through inclined-plane, the first cambered surface, the second cambered surface transition.

3. the cross axle of described universal joint according to claim 1 and 2, it is characterized in that: the axial end of described spindle nose is the setting of evagination hemisphere face.

4. the cross axle of universal joint according to claim 1 and 2, it is characterized in that: described spindle nose root is provided with into the conical surface of cone angle, and the described conical surface adopts arc surface to be connected transition with middle base substrate.

5. the cross axle of described universal joint according to claim 3, it is characterized in that: described spindle nose root is provided with into the conical surface of cone angle, and the described conical surface adopts arc surface to be connected transition with middle base substrate.

6. the cross axle of described universal joint according to claim 4, it is characterized in that: described cone angle is that 25 degree are to 27 degree.

7. the cross axle of described universal joint according to claim 5, it is characterized in that: described cone angle is that 25 degree are to 27 degree.