Test table for five-function test of driving shaft assembly of constant velocity universal joint

Abstract

The invention relates to a test table for a five-function test of a driving shaft assembly of a constant velocity universal joint. The test table comprises a rack, a fixing end and a slippage end, wherein the fixing end and the slippage end are located on the rack; the fixing end comprises a guide rail and a sliding block, a swinging bedplate, a linear displacement driving assembly, a sliding bedplate, a torque rotating speed sensor, a spindle supporting base, a spindle, a clamp, a swinging and driving assembly, a spindle driving assembly, a linear displacement sensor and the like; the slippage end comprises a swinging bedplate, a clamp, a rotating shaft, a supporting base, a pull pressure sensor, a rear sliding board, a front sliding board, a guide rail and a sliding block, a swinging and driving assembly, a linear displacement sensor and the like; and the rack comprises a guide rail and a sliding block, a linear displacement sensor, a linear displacement driving assembly and the like. With regard to the driving shaft assemblies of the constant velocity universal joint with the different structures and sizes of the working pieces, the test table can test working pieces with various specifications and structures by replacing the clamps, and adjusting the position of the clamp at the fixing end and the position of the clamp at the slippage end, and the size of a rotary center distance.

Description

technical field [0001] The invention relates to a mechanism in the technical field of testing components of constant velocity universal joint drive shaft assemblies for automobiles, in particular to a five-function test bench for constant velocity universal joint drive shafts. Background technique [0002] In the vehicle drive system, the constant velocity universal joint drive shaft assembly is the only important component that transmits the power output from the gearbox to the wheels. It is mainly composed of three parts: the fixed end universal joint, the mandrel, and the moving end universal joint. In addition to the clearance, the assembly has displacement and swing angle, starting torque, dynamic and static sliding force, fixed end swing torque and swing angle, and sliding end swing torque and swing angle. These characteristics are also used to evaluate product design, manufacturing and assembly quality. Key indicators. At present, due to the test and research of con...

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Problems solved by technology

Among them: 1 Regarding the swing angle test, this article only discusses the test method on the swing angle of the fixed end and the sliding end of the assembly, but does not explain the conditions under which the project is tested and the relationship between the project and the swing torque , because no matter what the test is, it must be carried out under certain conditions, and there is a certain correspondence between the swing angle and the swing torque; The magnitude of the measured force is multiplied by the distance from the tension sensor to the swing center to obtain the swing torque value. This test method is an indirect measurement, which is not as accurate as the direct test. At the same time, the test of this project also does not indicate the condition of the swing angle. 3. For the test of the displacement of the sliding end, the paper uses a stepping motor to drive the screw to rotate, then the nut linearly moves to drive the movable headstock to move on the linear guide rail, and the chuck drives the drive shaft to slide The end moves in a straight line, and the displacement is measured by the linear displacement sensor. However, the range of the displacement of the test, how to judge whether the test is in place, and whether the workpiece is rotating are not clearly given, and the stepper motor will appear out of step during use. , affects the test accuracy, and whether the workpiece rotates has a greater impact on the test; 4. Regarding the test of the sliding force, this article directly tests the size of the sliding force through the tension and pressure sensor, whether the workpiece rotates, and what is the sliding range There is no explanation, because the sliding force may be different in different sliding ranges; 5 Regarding the starting torque, this article is to make the fixed end and the sliding end form a certain angle, and load the torque measured when the rotating end is 0-150Nm and the fixed end and sliding end. When the end is shifted to zero, the torque difference measured by the loading rotation is used as the starting torque value, which is not given for the single-ended starting torque test; 6 Finally, the article does not explain whether workpieces with different structures or lengths can be tested

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