Push broach for machining tooth-missing nylon external spline

Abstract

The utility model relates to a push broach for processing a tooth-missing nylon external spline, which comprises a main body, spline push broaching teeth are arranged on the inner wall of the circumference of the main body, a first cutting edge is arranged at the front end of the spline push broaching teeth, tooth-missing push broaching teeth are further arranged on the inner wall of the circumference of the main body, and a second cutting edge is arranged at the front end of the tooth-missing push broaching teeth. And the second cutting edge is used for performing push broaching on a nylon layer at the tooth missing position of the nylon spline. According to the push broach, the tooth missing position push broaching teeth are additionally arranged at the positions, corresponding to the nylon spline missing teeth, of the push broach, so that push broaching force borne by the circumference of a spline nylon workpiece subjected to push broaching is more uniform, the stability of the push broaching process is effectively improved, and the spline size can be better controlled.

Description

TECHNICAL FIELD

[0001] The utility model relates to spline machining technical field, concretely relates to a push broach for toothless nylon outer spline machining. BACKGROUND

[0002] At present, nylon outer spline machining mainly adopts push broaching, uses special fixture positioning on the push plastic machine, and carries out push broaching through nylon push broach. When machining toothless nylon outer spline, the currently used push broach does not carry out push broaching at the toothless place, and the size tooth condition appears in the outer spline push broaching process due to the uneven circumferential stress.

[0003] Therefore, the push broach for toothless nylon outer spline machining is provided. SUMMARY

[0004] In view of the problem that the toothless nylon outer spline appears size tooth due to uneven stress in the push broaching process, the push broach for toothless nylon outer spline machining is provided, so that the circumferential push broaching force of the toothless nylon outer spline workpiece to be pushed is uniform, and the stability of the push broaching process is increased.

[0005] The push broach for toothless nylon outer spline machining comprises a main body, a spline push broaching tooth is arranged on the circumferential inner wall of the main body, a first cutting edge is arranged at the front end of the spline push broaching tooth, a toothless place push broaching tooth is further arranged on the circumferential inner wall of the main body, a second cutting edge is arranged at the front end of the toothless place push broaching tooth, and the second cutting edge pushes the nylon layer at the toothless place of the outer spline when toothless nylon outer spline machining is carried out.

[0006] Further, an installation hole for installing the push broach is further arranged on the main body.

[0007] Further, a limiting groove for limiting the push broach during push broaching is further arranged on the main body.

[0008] The push broach for toothless nylon outer spline machining has the following beneficial effects:

[0009] The toothless place push broaching tooth is arranged on the push broach, so that the push broaching force of the circumferential toothless nylon outer spline workpiece to be pushed is more uniform, the stability of the push broaching process is effectively increased, and the spline size can be better controlled. BRIEF DESCRIPTION OF DRAWINGS

[0010] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without the creative labor of the ordinary skilled in the art.

[0011] Figure 1It is the structural schematic diagram of the push broach for the missing tooth nylon external spline processing of the utility model.

[0012] Figure 2 It is the schematic diagram of the first cutting edge and the second cutting edge of the utility model.

[0013] Figure 3 It is the schematic diagram of the missing tooth nylon external spline in the embodiment.

[0014] In the figure: 1, main body;2, spline push broach tooth;3, missing tooth push broach tooth;4, mounting hole;5, limit slot;6, first cutting edge;7, second cutting edge;8, missing tooth nylon external spline;9, external spline missing tooth place. Specific embodiments

[0015] In the description of the utility model, it needs to be understood that the orientation or position relation indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relation based on the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.Thus, the features limited by "first", "second" and the like can explicitly or implicitly include one or more of the features.In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0016] The utility model provides the following specific implementation scheme:

[0017] As Figures 1-2 Indicated, the utility model provides a kind of push broach for the missing tooth nylon external spline processing, including circular ring columnar main body 1, main body 1 circumferential inner wall is equipped with spline push broach tooth 2, main body 1 circumferential inner wall is also equipped with missing tooth push broach tooth 3, the front end of spline push broach tooth 2 is equipped with first cutting edge 6, the front end of missing tooth push broach tooth 3 is equipped with second cutting edge 7, when processing missing tooth nylon external spline 8, second cutting edge 7 carries out push broaching to the nylon layer of external spline missing tooth place 9, corresponding, the number and position of missing tooth push broach tooth 3 correspond to the number and position of external spline missing tooth place 9 of missing tooth nylon external spline 8 to be processed.

[0018] Preferably, main body 1 is also equipped with mounting hole 4 for installing push broach, in the embodiment, mounting hole 4 has two, symmetrically arranged on the upper and lower sides of main body 1.

[0019] Preferably, the main body 1 is further provided with a limiting slot 5 for limiting the push cutter during push broaching.

[0020] In operation, the push cutter and the toothless nylon external spline 8 are installed on the push broaching machine. Figure 3 As shown in the figure, after the toothless nylon external spline 8 is installed on the push broaching machine, the position of the toothless push broaching tooth 3 corresponds to the position of the toothless external spline 9, the push cutter is pushed, the first cutting edge 6 pushes the nylon coating at the spline tooth of the toothless nylon external spline 8, and the second cutting edge 7 pushes the nylon coating at the toothless external spline 9.

[0021] The toothless push broaching tooth 3 is added to the push cutter, the toothless push broaching tooth 3 corresponds to the position of the toothless external spline 9, the push broaching force on the circumference of the toothless nylon external spline 8 workpiece is more uniform, the stability of the push broaching process is effectively increased, and the spline size can be better controlled.

[0022] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model. These changes and improvements all fall within the scope of the utility model claimed.

Claims

1. A toothless nylon external spline processing push broach, comprising a main body (1), a spline push broaching tooth (2) is arranged on the circumferential inner wall of the main body (1), the front end of the spline push broaching tooth (2) is provided with a first cutting edge (6), characterized in that: The main body (1) is further provided with a missing tooth place push shaving tooth (3) on the circumferential inner wall, the front end of the missing tooth place push shaving tooth (3) is provided with a second cutting edge (7), and the second cutting edge (7) pushes the nylon layer of the missing tooth place of the nylon spline during the nylon spline machining.

2. The push broach according to claim 1, wherein: The main body (1) is further provided with a mounting hole (4) for mounting the push knife.

3. The push broach according to claim 1, wherein: The main body (1) is further provided with a limiting groove (5) for limiting the push knife during push shaving.

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