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Welding technology of differential mechanism assembly

A technology of welding process and differential gear, applied in welding equipment, laser welding equipment, welding/welding/cutting items, etc., can solve the problems of difficult processing, light weight, high cost, etc., to improve production efficiency and processing accuracy , light weight and easy production

Inactive Publication Date: 2018-09-07
CHONGQING LIANHAO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a welding process of differential gear assembly to solve the problems of traditional differential gear assembly, which are difficult to process, high in cost, low in precision, and difficult to reduce weight

Method used

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  • Welding technology of differential mechanism assembly
  • Welding technology of differential mechanism assembly
  • Welding technology of differential mechanism assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A welding process for a differential gear assembly, comprising the following steps:

[0039] (1) The differential case 2 and the differential gear 1 that can be matched with each other are prepared, and the outside of the differential case 2 is a stepped shaft;

[0040] (2) Remove oil stains and carbon layers on the differential case 2 and the differential gear 1, and perform laser cleaning until the contact surfaces of the differential case 2 and the differential gear 1 are free of foreign matters and impurities;

[0041] (3) Set the shaft hole of the differential gear 1 on the stepped shaft portion with a smaller diameter of the differential case 2, and press the step between the differential gear 1 and the stepped shaft portion;

[0042] (4) Fix the differential gear 1 and the differential case 2 with a clamp, and fill the axial contact surface of the differential case 2 and the differential gear 1 with 1mm iron-nickel alloy welding wire using a welding wire filling ...

Embodiment 2

[0048]The difference between this embodiment and Embodiment 1 is that in step (4), a welding wire filling mechanism is used to fill the axial contact surface of the differential case 2 and the differential gear 1 with a 0.6 mm iron-nickel alloy welding wire In the gap, the contact surface between the differential case 2 and the differential gear 1 is evenly divided into 3 points for spot welding.

[0049] According to the commonly used dimensions of the differential case 2 and the differential gear 1, the three points of the contact surface of the differential case 2 and the differential gear 1 can be spot welded, and the two can be well connected. Preliminary fixation; using 0.6mm iron-nickel alloy welding wire can make the welding process faster.

Embodiment 3

[0051] The difference between this embodiment and Embodiment 1 is that in step (4), a 1.3mm iron-nickel alloy welding wire is used to fill the axial contact surface of the differential case 2 and the differential gear 1 by using a welding wire filling mechanism In the gap, the contact surface between the differential case 2 and the differential gear 1 is evenly divided into 6 points for spot welding.

[0052] Spot welding the 6 points of the contact surface between the differential case 2 and the differential gear 1 can be applied to many differential assemblies. Using 1.3mm iron-nickel alloy welding wire can make the welding process more efficient. firm.

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Abstract

The invention belongs to the technical field of car spare part manufacturing and particularly discloses a welding technology of a differential mechanism assembly. The welding technology comprises thefollowing steps that 1, a differential mechanism shell and a differential mechanism gear which can be matched mutually are prepared; 2, laser washing is carried out; 3, press fitting is carried out; 4, welding wire filling and laser spot welding are carried out; 5, ring welding is carried out; 6, weld seams are cleared; 7, ultrasonic flow detection is carried out; and 8, tooth milling is carried out. Compared with the prior art, the technology is easy to operate, and the produced differential mechanism assembly is simple in structure, low in machining cost, high in precision and lighter in total mass.

Description

technical field [0001] The invention belongs to the technical field of auto parts manufacturing, and specifically discloses a welding process for a differential gear assembly. Background technique [0002] The differential assembly is an important and indispensable part in the car to realize the turning and direction change of the car, and it is mainly composed of the differential case and the differential gear. At present, most of the differential housings on automobiles are ductile iron (such as QT500, QT600), and most of the differential gears are low-carbon steel (such as 20CrMoH, 20MnCr5). Usually, the difference between the differential gear and the differential housing The connection method is to connect the differential gear to the differential case with bolts or rivets. The differential assembly of traditional screw or rivet connection has the following disadvantages: [0003] 1. The differential case and the differential gear require complicated processing techni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/14
CPCB23P15/14B23P2700/50B23K26/22B23K26/242B23K26/282B23K26/32B23K26/211B23K2101/006B23K2101/04B23K2103/06B23K31/125
Inventor 邱丽娜王小金
Owner CHONGQING LIANHAO TECH CO LTD
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