A four-degree-of-freedom self-positioning high and low temperature tensile compression and durability testing machine

Abstract

The invention discloses a four degrees of freedom self-positioning high-and-low temperature resistant tension, pressure and durability testing machine. The testing machine includes a base plate for the testing machine, wherein a front support plate and a back support plate are arranged below the base plate for the testing machine; a roller and a foundation bolt are respectively fixed on the front support plate and the back support plate; a No.8 bearing is fixed on a front support plate; a No.9 bearing is fixed on the back support plate; the front support plate and the back support plate are arranged at two sides of the base plate for the testing machine; the front support plate, the back support plate and the base plate for the testing machine are connected through a No.3 bolt; one end of a No.1 triangular guide rail and one end of a No.2 triangular guide rail are connected with the front support plate; and the other end of the No.1 triangular guide rail and the other end of the No.2 triangular guide rail are connected with the back support plate. The four degrees of freedom self-positioning high-and-low temperature resistant tension, pressure and durability testing machine moves back and forth by using the triangular guide rails, and can bear large load and is not deformed easily so that the deflection for the whole column and crossbeam in the horizontal direction becomes smaller; the testing machine is provided with the roller so that a high-and-low temperature box can be conveniently pushed into and out; and the testing machine is provided with the foundation bolt so that the testing machine can be leveled and fixed conveniently and shaking of the whole testing machine can be avoided.

Description

technical field [0001] The invention relates to the technical field of auto parts testing equipment, in particular to a four-degree-of-freedom self-positioning high and low temperature tensile pressure and durability testing machine. Background technique [0002] At present, the stiffness tests of door panels and instrument panels in auto parts in high and low temperature environments at home and abroad are mostly carried out by single-degree-of-freedom electric cylinders or industrial robots. Single-degree-of-freedom electric cylinders are used for testing. Finally, you need to open the door of the temperature test chamber, adjust it to another point, close the door of the temperature chamber, and wait for the temperature to reach the test temperature before performing the test. This is both troublesome to operate and wastes power resources, but this design is relatively It is simple, and the cost of the testing machine is low; use an industrial robot to test the stiffness....

AI Technical Summary

Problems solved by technology

[0002] At present, the stiffness tests of door panels and instrument panels in auto parts in high and low temperature environments at home and abroad are mostly carried out by single-degree-of-freedom electric cylinders or industrial robots. Single-degree-of-freedom electric cylinders are used for testing. Finally, you need to open the door of the temperature test chamber, adjust it to another point, close the door of the temperature chamber, and wait for the temperature to reach the test temperature before performing the test. This is both troublesome to operate and wastes power resources, but this design is relatively It is simple, and the cost of the testing machine is low; use an industrial robot to test the stiffness. Before the experiment, you can input the information of all the test points into the industrial robot, close the door, and after the temperature reaches the industrial robot will finish the test one by one. The test method is more efficient and saves resources, but industrial robots with high and low temperature resistance are quite expensive, and the operation of industrial robots is also relatively complicated; carry out high and low temperature fatigue durability tests on the handles, armrests and map pockets of automobile door panels, that is, through the , armrest or map bag, apply a certain pulling force or pressure for a period of time, then unload the test force, and then proceed to the next test cycle. At present, cylinders are mainly used as power sources at home and abroad. The connection is relatively simple, the cost is low, and the control circuit is also comparative. Simple, due to the fluctuation of air pressure, the test force changes greatly. At the same time, the cylinder will move slowly or even freeze in the low temperature environment. It is necessary to heat the cylinder block with a heating belt. Generally, the low temperature of the test using the cylinder as the actuator will be limited. The curve records of the strength and displacement of the durability test of the cylinder, when the test part is damaged can only be observed by human

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