Four pendulum drive shaft balancing machine

Abstract

The invention discloses a balancing machine for a four-swinging bracket transmission shaft, comprising a base, and a lathe head, a left swinging bracket, a right swinging bracket and two middle swinging brackets with same structures, which are sequentially arranged on the base, wherein the lathe head is connected with a main shaft of the left swinging bracket by a cardan joint, a sensor is respectively arranged on each of the four swinging brackets, the left swinging bracket and the right swinging bracket are vertically arranged, the sensors of the middle swinging brackets are horizontally arranged, and respective vibration measuring wire, rigidity piece and damping spring are formed into a cushion support mechanism with up-and-down freedom degree, so that when an upper electrode center and a lower electrode center of a projection welding machine are not coincident with the axis of a workpiece, the workpiece can not be impacted by a radial force, and the workpiece, the main shaft and a bearing can not be damaged. Furthermore, the width size of the middle swinging brackets is reduced, so that the clamping of the workpiece and a welding head can not be limited by the middle swinging brackets.

Description

technical field [0001] The invention relates to a special balancing machine for automobile drive shafts, and more specifically, relates to a four pendulum drive shaft balancing machine. Background technique [0002] In the automotive industry, four pendulum drive shaft balancing machines are generally used to detect and correct the balance of three-section drive shafts. see Figure 1 to Figure 7 As shown, the existing four pendulum drive shaft balancing machine is powered by the head box 110 located on the base 100, and is connected with the main shaft of the left pendulum 130 through the universal joint 120, the left pendulum 130, the right pendulum 140 And two intermediate pendulums 150 are equipped with fixtures, thereby driving the workpiece 1 to rotate, and sensors 160 are also installed on the lower part of each pendulum. When the workpiece 1 (three-section transmission shaft) is rotating, if the center of mass and the center of rotation are not on the same axis When ...

AI Technical Summary

Problems solved by technology

[0007] 1. When the transmission shaft in the middle of the workpiece 1 is short, the workpiece 1 cannot be clamped due to the interference of the middle swing frame 150, and finally it cannot be tested;

[0008]2. When the balance is corrected, the welding head of the projection welding machine 2 cannot extend into the middle of the two pendulum frames, resulting in the welding balance weight of the drive shaft in the middle. Manual electric welding operation seriously affects the quality and efficiency of balance correction

[0010] 1. It causes the bending of the workpiece 1 shaft tube, which affects the quality of balance correction, and even repeated corrections still cannot reach the balance technical index

[0011]2. The main shafts of the left and right swing frames 130 and 140 are bent and deformed and the main shaft bearings are damaged, which greatly increases the failure rate of the balancing machine and prevents normal production

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