CN215431895U

CN215431895U - Simple indexing broaching auxiliary appliance

Info

Publication number: CN215431895U
Application number: CN202121139042.5U
Authority: CN
Inventors: 成钢; 袁剑平; 阳仁奇; 苟磊
Original assignee: Jianglu Machinery and Electronics Group Co Ltd
Current assignee: Jianglu Machinery and Electronics Group Co Ltd
Priority date: 2021-05-25
Filing date: 2021-05-25
Publication date: 2022-01-07
Anticipated expiration: 2031-05-25

Abstract

The utility model discloses a simple indexing broaching auxiliary appliance, which is applied to machining of an inner key groove in machining, mainly guides a single-tooth broaching tool to perform indexing broaching and realizes broaching forming of multiple teeth and splines, and relates to the technical field of broaching auxiliary appliances; the tool comprises a tool body, wherein a central hole communicated with the center of the tool body is formed in the center of the tool body, a convex edge is arranged at one end of the tool body, the tool body and the convex edge are coaxial and concentric, and key grooves are uniformly formed in the circumferential edge in the axial direction; the utility model adopts the bottom hole positioning of the broaching part, the single tooth orientation is carried out after broaching, other uniformly distributed teeth outside broaching are evenly distributed, and the one-step forming of the integral spline broach is realized by multiple times of broaching forming, the efficiency is obviously higher than that of gear shaping and linear cutting key grooves, and meanwhile, the cost is low and the production period is short compared with that of the integral spline broach, and the utility model is mainly suitable for medium and small batch production and scientific research trial production of spline processing with special tooth shapes.

Description

Simple indexing broaching auxiliary appliance

Technical Field

The utility model discloses a simple indexing broaching auxiliary appliance, which is applied to machining of an inner key groove in machining, mainly aims to guide a single-tooth broaching tool to perform indexing broaching and realize broaching forming of multiple teeth and splines, and relates to the technical field of broaching auxiliary appliances.

Background

In machining, a plurality of transmission parts are connected by a spline, and the precision of the spline not only influences the stability and safety of transmission, but also has very important influence on the service life of the transmission parts; the spline is generally formed by broaching, and the spline forming method has the advantages of high efficiency and high precision; the integral spline broach is mainly suitable for mass production due to higher material, production process period, precision and manufacturing cost, when the production is carried out in small batch and the production progress is tighter, a low-cost and high-efficiency production mode is adopted, and technical personnel need to research and develop the integral spline broach, and a simple indexing broaching auxiliary appliance required by implementing the low-cost and high-efficiency production is obtained through research and development.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: the simple indexing broaching auxiliary tool adopts the single-tooth spline broaching tool to realize one-step forming of the integral spline broaching tool by multiple times of broaching forming.

The technical scheme adopted by the utility model is as follows: the utility model provides a simple and easy graduation broaching appurtenance, includes the utensil body, the centre bore of well expert is seted up at utensil body center, and one end is provided with protruding edge, and utensil body and protruding coaxial concentricity in edge, the keyway has been seted up along axial direction equipartition to the circumference.

The broaching auxiliary appliance is also provided with a positioning pin, the diameter of the positioning pin is the same as the width of the key groove, when in use, the single-tooth spline broaching tool firstly broaches a single tooth to the groove, then inserts a positioning pin phi C, then broaches another tooth, and repeats the procedure to finish the broaching and forming of all teeth, wherein the positioning pin phi C is equal to the width dimension B of the key groove, and the fit clearance is less than or equal to 0.01 mm; the positioning size phi A of the simple indexing broaching auxiliary tool and the broaching part hole is matched to be phi A-H6/H7, and the maximum gap is not more than 0.03 mm; meanwhile, the symmetry degree of the groove width dimension B of the simple indexing broaching auxiliary tool relative to the matched phi A-H6/H7 reference is less than 0.015 mm.

The tool body is made of wear-resistant alloy steel materials, and is quenched by 45-52 HRC.

In summary, due to the adoption of the technical scheme, the utility model has the beneficial effects that:

the utility model needs to be formed by repeated bolt indexing broaching and has certain accumulated indexing error, so the method has relatively low efficiency, but has obviously higher efficiency than gear shaping and linear cutting key grooves, and has low cost and short production period compared with the integral spline broach, and is mainly suitable for medium and small batch production and scientific research trial production of spline processing with special tooth shapes.

Drawings

The utility model will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view, semi-sectional view of the present invention in the condition of single tooth spline broach insertion;

FIG. 3 is a top view of a workpiece in a positioned state and a half sectional view of the workpiece in a broach inserted with a single tooth spline according to the present invention;

labeled as: 1-convex edge, 2-appliance body, 3-central hole, 4-key groove, 5-single-tooth spline broach, 6-broaching part and 7-locating pin.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

As shown in fig. 1-3, a simple indexing broaching auxiliary tool comprises a tool body 2, a central hole 3 is formed in the center of the tool body 2, a convex edge 1 is arranged at one end of the tool body, the tool body 2 and the convex edge 1 are coaxial and concentric, and key grooves 4 are uniformly formed in the circumferential edge in the axial direction.

The broaching auxiliary appliance is also provided with a positioning pin, the diameter of the positioning pin is the same as the width of the key groove 4, when in use, the single-tooth spline broach 5 firstly brows a single tooth to the groove, then inserts the positioning pin phi C, then brows another tooth, and repeats the procedure to finish the broaching and forming of all teeth, the positioning pin phi C is equal to the width dimension B of the key groove 4, and the fit clearance is less than or equal to 0.01 mm; the positioning size phi A of the simple indexing broaching auxiliary tool and the 6 holes of the broaching part is matched to be phi A-H6/H7, and the maximum clearance is not more than 0.03 mm; meanwhile, the symmetry degree of the groove width dimension B of the simple indexing broaching auxiliary tool relative to the matched phi A-H6/H7 reference is less than 0.015 mm.

The tool body 2 is made of wear-resistant alloy steel materials and is quenched by 45-52 HRC.

The working principle of the utility model is as follows: aiming at the problems of high cost and long production period of the integral spline broach for forming the connecting spline of the transmission part, the utility model adopts the single-tooth broach and the single-tooth spline broach 5 (low cost and precision and simple structure) for broaching the spline and the symmetrically distributed key slots 4, and realizes the one-step forming of the integral spline broach by multiple times of broaching forming (figure 2);

the simple indexing broaching auxiliary appliance adopts the positioning by the bottom hole of the broaching part 6, and the single tooth is broached and then oriented by the single-tooth bolt, so as to evenly divide other uniformly distributed teeth (figure 3) outside the broaching; when the broaching tool is used, a simple indexing broaching auxiliary tool is used, the single-tooth spline broach 5 firstly broaches a single tooth to the groove, then inserts the positioning pin phi C, broaches another tooth, and the process is repeated to finish broaching and forming of all teeth; during design, the locating pin phi C is equal to the width dimension B of the key groove 4, and the fit clearance is less than or equal to 0.01 mm; the positioning size phi A of the simple indexing broaching auxiliary tool and the 6 holes of the broaching part is matched to be phi A-H6/H7, and the maximum clearance is not more than 0.03 mm; meanwhile, the symmetry degree of the groove width dimension B of the simple indexing broaching auxiliary tool relative to the reference of the matching phi A-H6/H7 is less than 0.015 mm; the simple indexing broaching auxiliary device is made of wear-resistant alloy steel materials, and is quenched at 45-52 HRC.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.

Claims

1. The utility model provides a simple and easy graduation broaching appurtenance, includes utensil body (2), its characterized in that, utensil body (2) center is seted up well logical centre bore (3), and one end is provided with protruding edge (1), and utensil body (2) and protruding edge (1) coaxial concentricity, circumference edge axial direction equipartition have seted up keyway (4).

2. The simple indexing broaching assist device according to claim 1, further comprising a positioning pin having a diameter equal to the width of the key groove (4).

3. The simple indexing broaching aid of claim 1, wherein the tool body (2) is made of an abrasion-resistant alloy steel material.