The shock absorption performance of the shock absorber shall be evaluated through the shock absorption test. Damping test is usually carried out only when the shock absorber is newly designed and manufactured, and it is not necessary to test the shock absorber one by one after mass production; Only type test is needed. However, the shock absorbers that are particularly important or must be adjusted in the shock absorption test to meet the technical requirements shall be tested one by one.
The vibration reduction test should be carried out on the whole machine, so that the test conditions are the actual working conditions; The vibration reduction test can also be carried out on a special vibration reduction test bench, that is, the actual working conditions are simulated, the vibration source is artificially manufactured, and the difference between the shock absorber without the shock absorber and the shock absorber installed is compared to evaluate the advantages and disadvantages of the shock absorber.
According to different situations, various vibration excitation methods can be used to artificially produce vibration sources, such as using eccentric wheel rotation to drive the slider to generate reciprocating displacement excitation, using centrifugal force generated by unbalanced rotor to excite, using compressed air blower to excite, using loudspeaker to excite, using electromagnetic induction to excite, or using special vibration table to excite, etc. The parameters to be measured during vibration test include frequency, amplitude, velocity, acceleration, etc., and sometimes the stress or strain of some parts of the machine is measured. Different industrial departments and different machine products have different requirements for vibration.