Cage hardness testing apparatus

Abstract

The invention discloses a cage hardness testing apparatus, comprising a base plate, wherein a bracket is mounted on the bottom of the base plate; motors are mounted on the bracket, and altogether fourgroups of the motor are arranged; the top of the base plate is provided with clamping devices and a shelving bench; the top of the shelving bench is provided with a mounting groove with a circular cross section; and altogether four groups of the clamping device are arranged. Each clamping device comprises one motor, a threaded sleeve, a first screw, a lifting plate, two guide columns, guide sleeves, an extruding head, a second screw, a spring, a fixed shaft, a rectangular block, a knob and a spacing ring, wherein the two guide columns are fixed on the top of the base plate; both guide columnsare slidably sleeved by the guide sleeves; the lifting plate is arranged between and connected with the two guide sleeves; the first screw is installed on the bottom of the lifting plate and downwardly penetrates the base plate; and the threaded sleeve sleeves the first screw. The cage hardness testing apparatus of the invention is very convenient and flexible to clamp, so hardness testing can beaccurately performed and the stability and precision of the testing are improved.

Description

technical field [0001] The invention relates to the technical field of ball cages, in particular to a hardness testing device for ball cages. Background technique [0002] The ball cage (cage), also called "constant velocity universal joint", is an important part in the transmission system of a car. Its function is to transmit the power of the engine from the transmission to the driving wheels to drive the car to drive at high speed. There are many types of constant velocity universal joints used in cars, among which the most widely used are ball cage type constant velocity universal joints and tripod type constant velocity universal joints, which mainly include sliding sleeves, three-way shafts, transmission shafts, star It is composed of the main parts of sleeve, cage and bell shell. Because the constant velocity universal joint transmits heavy driving torque, the load is heavy, the transmission precision is high, the demand is large, and it is a safety part, so its main ...

AI Technical Summary

Problems solved by technology

[0003] Since the hardness of the ball cage has a great influence on the use of the ball cage, it is generally necessary to select some samples for hardness testing when the parts leave the factory. Generally, a professional hardness tester is used for testing. However, in actual testing, the ball Cage clamping is very troublesome, and the clamping is not tight enough to cause large deviations in the measurement results

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