Load noise testing tool

Abstract

The invention discloses a load noise testing tool including a transmission air cylinder assembly, a position sensor assembly and a machine body fixing assembly connected in sequence. The transmissionair cylinder assembly, the position sensor assembly and the machine body fixing assembly are all mounted fixedly on a bottom board. The transmission air cylinder assembly includes an air cylinder base, a transmission air cylinder and a transmission rod. The position sensor assembly includes a sensor mounting board, a first adapter board, a position sensor and a lead screw pair. The machine body fixing assembly includes a toggle clamp cushion, a toggle clamp, a second adapter board, a press board and a limit base. According to the invention, an air source is introduced as a load, so that load change time is reduced substantially. The load force can be changed conveniently through regulating a pressure valve according to different indexes of a product. Flexible material connection of the tool is self-adaptive to rigid contact between the product and the tool, so that good denoising and damping effects are achieved. Through operation on an air cylinder by an electromagnetic valve, automation is realized and the working efficiency is achieved at the same time.

Description

technical field [0001] The invention relates to the technical field of testing tooling, in particular to a loading noise testing tooling. Background technique [0002] Cars have become one of the main means of transportation that is essential to modern life. Human needs are no longer as simple as means of transportation. Performance improvements, ride comfort, massage chair functions, sunroofs, and sound insulation effects have all become new markets. demand, and the production testing of corresponding auto parts manufacturers is closer to the actual vehicle state. A large number of power boosting and transmission devices used in vehicles are completed by motors. The noise of the motor itself is the main factor that will directly lead to the environmental noise in the cabin, so In the case of traditional no-load detection, it is difficult to guarantee the noise impact under actual load conditions. [0003] At present, most automotive motor manufacturers use the traditional ...

AI Technical Summary

Problems solved by technology

[0002] Cars have become one of the main means of transportation that is essential to modern life. Human needs are no longer as simple as means of transportation. Performance improvements, ride comfort, massage chair functions, sunroofs, and sound insulation effects have all become new markets. demand, and the production testing of corresponding auto parts manufacturers is closer to the actual vehicle state. A large number of power boosting and transmission devices used in vehicles are completed by motors. The noise of the motor itself is the main factor that will directly lead to the environmental noise in the cabin, so In the case of traditional no-load detection, it is difficult to guarantee the noise impact under actual load conditions

[0003] At present, most automotive motor manufacturers use the traditional counterweight method to realize loading detection, which has two disadvantages: 1. The detection operation is cumbersome; 2. The production capacity is not high; so automation and new load forms can solve the existing problems. The disadvantages of the traditional scheme, but there are two difficulties in the noise loading test: 1. In the free field environment, the noise generated by the mechanical action of the automation itself cannot affect the characteristics of the motor itself; 2. The volume of the load is too large to change the free field. environment, causing sound diffraction

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