CN212311073U

CN212311073U - Gear grinding tool for mechanical spline expansion

Info

Publication number: CN212311073U
Application number: CN201922145360.1U
Authority: CN
Inventors: 宋福晨; 刘远志; 冯晓明; 刘德庆; 胡昌向; 刘忠铎
Original assignee: Yantai Eddie Precision Machinery Co Ltd
Current assignee: Yantai Eddie Precision Machinery Co Ltd
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2021-01-08
Anticipated expiration: 2029-12-04

Abstract

The utility model discloses a gear grinds frock for mechanical type spline is bloated tight, including top, round bar body and work piece, its characterized in that, the round bar body is cavity tubular structure, and the both ends of its round bar body are equipped with interior cone angle, interior cone angle and top mutually support, the one end processing of round bar body has the external splines, and wherein the external splines is used for cooperateing with the work piece internal spline, and wherein round bar external splines department is equipped with the regulation seam, adjust the seam and be used for bloated tight external splines, compare with prior art, the utility model provides a hydraulic pressure, atmospheric pressure frock cover sealing protection device that rises, simple structure, it is better accurate to the fixed effect of work piece internal gear, and the finished product assembly benchmark keeps unanimous, has guaranteed the positioning accuracy of clamping many times, and work piece processingquality is obviously improved, and machining efficiency also correspondingly promotes.

Description

Gear grinding tool for mechanical spline expansion

Technical Field

The utility model relates to a gear grinds frock for mechanical type spline is bloated tight belongs to the frock clamp field.

Background

The processing problem of parts with internal spline characteristics is an important subject in the field of machining, the internal spline connection is often a connection mode of a central axis in the gear transmission process, and the processing mode of internal spline positioning has important influences on tooth profile errors, tooth direction errors and circumferential section accumulated errors of the outer tooth surface of a workpiece, so that transmission precision, service life and working noise are influenced. Secondly, the machining positioning datum of the gear workpiece is consistent with the assembly datum of a finished product, the repeated positioning precision of repeated clamping is high, and the machining efficiency is improved.

The current processing mode is as follows:

firstly, a mandrel with a cone is tightly matched with a spline hole of a workpiece, and the precision of the workpiece is influenced because the mandrel is provided with the cone and the spline hole is positioned in a line contact manner;

secondly, hydraulic fixture divide into two kinds of modes again:

1, equipment is provided with a hydraulic interface, the hydraulic pressure of the equipment is used as power to realize the tensioning of a hydraulic tool to clamp a workpiece, the tool cost is high, and the equipment is required to have the condition of reserving the hydraulic interface;

2 the hydraulic mandrel body has the function of hydraulic tensioning, and the defect is that hydraulic tensioning and pressure relief are required to be manually realized, so that the processing efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gear grinds worker device for mechanical type spline expands tightly to solve above-mentioned existence problem, improve machining efficiency.

The utility model discloses the technical problem that will solve adopts following technical scheme to realize:

the gear grinding tool for the mechanical spline expansion comprises a tip, a round bar body and a workpiece, and is characterized in that the round bar body is of a hollow tubular structure, inner cone angles are arranged at two ends of the round bar body, the inner cone angles are matched with the tip, an external spline is machined at one end of the round bar body, the external spline is used for being matched with the internal spline of the workpiece, an adjusting seam is arranged at the external spline of the round bar body, and the adjusting seam is used for expanding the external spline.

Further, the angle of the inner cone angle is 60 °.

Further, the tooth direction of the external spline is provided with a 1:500 taper during machining.

Further, the number of the adjusting seams is 6-8.

The utility model has the advantages that:

the utility model provides a gear grinds frock for mechanical type spline is bloated tight, simple structure, it is better accurate to the fixed effect of work piece internal gear, and finished product assembly benchmark keeps unanimous, has guaranteed the positioning accuracy of clamping many times, and work piece processingquality obtains obviously improving, and machining efficiency is also corresponding to be promoted.

Drawings

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

fig. 2 is a schematic view of the overall structure of the present invention.

In the figure, 1, a tip, 2, a round rod body, 21, an inner cone angle, 22, an outer spline, 23, an adjusting seam, 3 and a workpiece.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand, the present invention will be further explained below with reference to the following embodiments and the accompanying drawings, but the following embodiments are only the preferred embodiments of the present invention, and not all embodiments are included. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.

As shown in the figure, the gear grinding tool for mechanical spline expansion comprises a tip 1, a round rod body 2 and a workpiece 3, and is characterized in that the round rod body 2 is of a hollow tubular structure, inner cone angles 21 are arranged at two ends of the round rod body 2, the inner cone angles 21 are matched with the tip 1, an external spline 22 is machined at one end of the round rod body 2, the external spline 22 is used for being matched with an internal spline of the workpiece, an adjusting seam 23 is arranged at the position of the external spline 22 of the round rod body, and the adjusting seam 23 is used for expanding the external spline 22.

Further, the angle of the inner cone angle 21 is 60 °.

Further, the tooth orientation of the male spline 22 is tapered with a 1:500 taper during machining.

Further, the number of the adjusting slits 23 is 6-8.

Two ends of a round bar are machined into 60-degree inner cone angles 21, then an external spline 22 is machined at one end, in order to ensure that the tooth direction is vertical after the tool is expanded, the tooth direction of the external spline 22 has a 1:500 taper during machining, and finally the external spline 22 is uniformly cut in 6 parts. When the tool is used, a workpiece penetrates into the tool, and the upper part and the lower part of the tool are respectively compressed by the center 1, so that the workpiece 3 can be expanded and positioned.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The gear grinding tool for the mechanical spline expansion comprises a tip, a round bar body and a workpiece, and is characterized in that the round bar body is of a hollow tubular structure, inner cone angles are arranged at two ends of the round bar body, the inner cone angles are matched with the tip, an external spline is machined at one end of the round bar body, the external spline is used for being matched with the internal spline of the workpiece, an adjusting seam is arranged at the external spline of the round bar body, and the adjusting seam is used for expanding the external spline.

2. The gear grinding tool for mechanical spline expansion according to claim 1, wherein the angle of the inner taper angle is 60 °.

3. The gear grinding tool for mechanical spline expansion according to claim 1, wherein the tooth direction of the external spline is provided with a 1:500 taper during machining.

4. The gear grinding tool for mechanical spline expansion according to claim 1, wherein the number of the adjusting slots is 6-8.