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External spline cold beating tool

A technology of external splines and tooling, which is applied in the field of mechanical processing, can solve the problems of poor quality consistency, long processing cycle and low efficiency of torsion bar external splines, so as to improve processing efficiency, improve processing surface quality and spline accuracy, The effect of shortening the processing time

Pending Publication Date: 2020-01-24
BEIJING NORTH VEHICLE GROUP CORP
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Problems solved by technology

[0004] The invention proposes a cold forging tool for external splines to solve the technical problems of long processing cycle, low efficiency and poor quality consistency of torsion bar external splines

Method used

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Embodiment Construction

[0015] In order to make the purpose, content and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0016] This embodiment proposes a kind of external spline cold forging tooling, its structure is as follows figure 1 As shown, it mainly includes tooling rotating shaft 1, fixed sleeve 2, locking block 3, copper sleeve 4 and cold beating wheel 5. Wherein, the fixed sleeve 2 is fixed on the translation mechanism of the equipment, and the two fixed sleeves 2 are sleeved on the upper and lower ends of the tool shaft 1 respectively, and the tool shaft 1 can rotate axially in the fixed sleeve 2 . The tool rotating shaft 1 is provided with a groove between the two fixed sleeves 2, and the arc-shaped copper sleeve 4 is fastened on the cylindrical surface of the groove by threads. The cold beating wheel 5 is installed in the g...

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Abstract

The invention provides an external spline cold beating tool. The external spline cold beating tool comprises a tool rotating shaft, fixed sleeves, locking blocks, copper sleeves and a cold beating wheel, wherein the fixed sleeves are fixed on a translation mechanism; the tool rotating shaft can axially rotate in the two fixed sleeves; a groove is formed in the tool rotating shaft; the copper sleeves are fastened on the cylindrical surface of the groove through threads; the cold beating wheel is mounted in the groove; the detachable locking blocks are respectively mounted on the two fixed sleeves; and the shapes of the inner walls of the locking blocks are matched with the shaft part of the cold beating wheel, so that the cold beating wheel can rotate along the cylindrical surface consisting of the inner walls of steps on the inner sides of the fixed sleeves and the inner walls of the locking blocks. The external spline cold beating tool is synchronously used on two sides of a workpiece, can realize symmetric force application in the cold beating process of a torsion rod, enables the torsion rod to be uniformly stressed in the diameter direction, and meanwhile, adopts the integral cold beating wheel to greatly improve the surface machining quality and the spline precision; and meanwhile, compared with such traditional milling modes, the external spline cold beating tool can greatly shorten the machining time and improve the machining efficiency.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a cold forging tool for external splines. Background technique [0002] The torsion bar is made of low-alloy ultra-high-strength steel 45CrNiMoVA. The common method for machining external splines of parts is to design corresponding external spline hobs for milling. The tool wear is reduced, the product quality consistency is poor, the cost is high and the benefit is low when the parts are processed in large quantities. Therefore, for the processing of torsion bar external splines, it is necessary to propose an external spline cold forming tool for precise cold extrusion of torsion bar external splines, so as to realize rapid processing and forming of torsion bar external splines, while ensuring that the splines Machining accuracy ensures product quality. Contents of the invention [0003] (1) Technical problems to be solved [0004] The invention pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D13/04
CPCB21D13/04
Inventor 王会龙王芳刘心藜郭晓龙王雪莲刘珍妮冯卫张晶晶
Owner BEIJING NORTH VEHICLE GROUP CORP
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