CN101337295B - Synchronizer toothed-ring abrasion blasting technique - Google Patents

Abstract

A sandblast technology for alligatoring rings of a synchronizer is used for performing sandblast to processed alligatoring rings, and has the advantages that tiny burrs on the surfaces of workpieces can be removed, thereby smoothing the surfaces of the workpieces, eliminating the harm brought by the burrs, and improving the grade of the workpieces; tiny and even concave and convex surfaces are generated on the surfaces of spare parts for storing lubricating oil, thereby improving the lubricating condition and reducing the noise; and the fatigue value and the wear resistance of the spare parts are enhanced remarkably.

Description

Synchronizer toothed-ring abrasion blasting technique

Technical field

The present invention relates to machinery manufacturing technology field, a kind of specifically synchronizer toothed-ring abrasion blasting technique.

Background technology

The automobile synchronizer tooth ring of domestic production at present all is to adopt forging, Vehicle Processing explained hereafter to finish, and after screw thread is finished in Vehicle Processing, does not carry out any processing again, and the product thread surface that processes has more burr etc.;

Simultaneously, because synchro converter ring is to play the synchronous effect of gear shift in automotive transmission, needs often contact with the gear cone, break-in, so its wearability is also had higher requirement, and synchro converter ring mainly is a Cu alloy material, wearability is relatively poor with respect to steel part, before matrix material does not improve, goes back the good way of neither one and improves its wearability.

Summary of the invention

The objective of the invention is to develop a kind of harmful burr that processing produces of removing, make the synchro converter ring surface passivation, improve the synchronizer toothed-ring abrasion blasting technique of wearability.

Synchronizer toothed-ring abrasion blasting technique of the present invention, method water by machinery sand grains with very high speed and certain angle impelling to working surface, allow the ball material impact working surface, then in the gasflow clean-up effect of machine intimate by supporting dust catcher, ball material and the impurity of clearing up are reclaimed respectively, and the technology that the ball material can be utilized once more.Step is as follows:

1) selects the wet blast machine;

2) the ring gear product clamping that processes to anchor clamps;

3) the quartzy sand grains of selection #180, setting blasting pressure: 290Kpa, setting sandblast distance: 150mm, setting sandblast time: 2 seconds, setting product rotating speed: 30～50RPM;

4) sandblast of ring gear all is to be undertaken by selected above-mentioned parameter.

The advantage of synchronizer toothed-ring abrasion blasting technique of the present invention is: the small burr of cleaning surface of the work, and make surface of the work more smooth, and eliminated the harm of burr, improved the class of workpiece; Produce evenly trickle male and fomale(M﹠F) at piece surface, make lubricating oil obtain storage, thereby lubricating condition is improved, and reduce noise; Because abrasive material to the impact and the shear action of surface of the work, makes the surface of workpiece obtain certain cleannes and different roughness, and the mechanical performance of surface of the work is improved, and has therefore improved the fatigue resistance of workpiece; Part is through after the liquid blasting, and surperficial little defective comes out easily, helps inspection and flaw detection to part crack; Part can significantly improve the fatigue strength of part, anti-wear performance through liquid blasting; It is low not have dust, no raw material loss, non-environmental-pollution, noise in the process, high efficiency.Greatly improved dust to the pollution of environment with to the harm of workers ' health.Can be directly installed on the production line, save and produce area, favourable workpiece turnover.Abrasive material recycles in the course of the work, and consumption is little.The main parts size long service life, and be convenient to maintenance.

The specific embodiment

A kind of synchronizer toothed-ring abrasion blasting technique comprises:

1) to Dongguan City Dongcheng hundred logical hardware machinery factory customization rotating disc type wet blast machines, model is: BT-ZP-1212W-4;

2) workpiece (ring gear product) clamping to anchor clamps;

3) the quartzy sand grains of selection #180, initial setting blasting pressure: 50～290Kpa sets sandblast distance: 150～200mm, sets the sandblast time: 2～4 seconds, set product rotating speed: 30～50RPM;

4) by above-mentioned parameter ring gear is carried out sand blast test;

5) detect the surface appearance of blasted part, roughness, and blasted part carried out abrasion test, reached target call;

6) according to above-mentioned test data, the technological parameter that sums up the ring gear sandblast is: quartzy sand grains #180, blasting pressure: 290Kpa, setting sandblast distance: 150mm, setting sandblast time: 2 seconds;

In the later production process, the sandblast of ring gear all is to be undertaken by selected parameter.

Claims (1)

1. synchronizer toothed-ring abrasion blasting technique, it is characterized in that: step is as follows:

1) selects the wet blast machine;

2) the ring gear product clamping that processes to anchor clamps;

3) the quartzy sand grains of selection #180, setting blasting pressure: 290Kpa, setting sandblast distance: 150mm, setting sandblast time: 2 seconds, setting product rotating speed: 30～50RPM;

4) sandblast of ring gear all is to be undertaken by selected above-mentioned parameter.