Pneumatic spot welding tooling for passenger car axle housing and leaf spring backing plate

Abstract

The invention relates to a tool for pneumatic spot welding of a passenger bus axle housing and plate spring base plates. The tool comprises a base, a turning mechanism, a turning platform, supporting and pressing mechanisms, a centering mechanism, leveling mechanisms and plate spring base plate supporting mechanisms. The turning mechanism is arranged on the base and drives the turning platform to turn. The position of the passenger bus axle housing is adjusted through the centering mechanism and the leveling mechanisms. Each of the two ends of the turning platform is provided with one supporting and pressing mechanism. The supporting and pressing mechanisms support and press the passenger bus axle housing. Two through holes are formed in the turning platform. The four plate spring base plate supporting mechanisms are oppositely arranged on the two sides of the through holes in pairs and support and position the plate spring base plates. By the adoption of the tool for pneumatic spot welding of the passenger bus axle housing and the plate spring base plates, spot welding machining of the passenger bus axle housing and two sets of plate spring base plates can be achieved, and spot welding of the axle housing and the upper plate spring base plates and the lower plate spring base plates of different specifications can be achieved, so that the type and number of tools required by production of the passenger bus axle housing are reduced, production management is facilitated, and the production cost is lowered.

Description

Technical field: [0001] The invention relates to the technical field of production equipment for passenger car axle housings, in particular to a tool for pneumatic spot welding of passenger car axle housings and leaf spring backing plates. Background technique: [0002] Passenger car drive axle housing The drive axle housing is one of the important parts of the car, which supports the load of the car and transmits the load to the wheels. The traction force, braking force, lateral force and vertical force acting on the driving wheels are also transmitted to the suspension or chassis through the axle housing. Therefore, the drive axle housing of a bus is not only a load-bearing part, but also a force-transmitting part, and it is also the carrier and shell of the main reducer, differential and transmission of a bus. Automobile leaf spring is the most traditional elastic element in automobile suspension system. It is widely used because of its good reliability, simple structure...

AI Technical Summary

Problems solved by technology

In addition to the buffering effect in the suspension system, when it is placed longitudinally in the vehicle and one end is connected to the frame as a fixed hinge, it can be responsible for transmitting all directions of force and moment, as well as determining the trajectory of the wheel movement. It acts as a guide. The connection between the leaf spring and the axle is usually by welding and fixing the backing plates at the upper and lower ends of the axle housing. The leaf spring and the axle are connected by U-shaped bolts passing through the upper and lower backing plates. For the function of connecting the automobile leaf spring and the axle, the welding position of the upper and lower backing plates of the leaf spring on the axle housing and the installation position of the U-shaped bolts on the upper and lower backing plates of the leaf spring are very important. If the machining error is too large, it will cause the rear axle to be damaged. and the whole vehicle cannot be installed

[0003] At present, the traditional tooling for the spot welding of the upper and lower backing plates of leaf springs and the axle housing can only be used for the spot welding of a single type of axle housing, and most of them are mechanically clamped and positioned, and the operation is cumbersome. For the production of multiple varieties of axle housings, it is necessary to design Manufacture multiple sets of tooling corresponding to various types of axle housings to meet production requirements

In this way, the investment in tooling is relatively large, and it takes up a lot of production space in the workshop.

and imprecise positioning

At the same time, because the finished parts are welded to the upper and lower backing plates of the leaf spring, there is no processing after welding, so the processing accuracy after welding cannot meet the design requirements

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