Design And Study Of Multifunctional Friction And Wear Testing Machine

The friction and wear testing machine is an essencial test equipment to study the phenomena and essence of the friction & wear and accurately assessing the impacts of various factors on the friction & wear performance of materials.The majority friction and wear testing machines only can conduct a single form of friction tribological test on market. For the diversity of friction touch and movement, several friction and wear testing machines are needed to meet different experimental requirements,thus increasing equipments investment costs. Therefore,a simple and low-cost multifunctional friction and wear testing machine was designed in this article,which can conduct several kinds of friction touch and movement test.This article mainly includes the main structure design of friction and wear testing machine,three-dimensional modeling and assembly by UG modeling module,structu- ral statics and dynamics analysis based on Ansys Workbench,mechanical system dynamics simulation and optimization of friction and wear testing machine by UG motion simulation module.The main contents are as follows:1.A new kind of multifunctional friction and wear testing machine was designed which can change different friction groups in the same rotating spindle and the friction connection seat to conduct reciprocating friction test, end-face friction test and pin(ball)-disk friction test.The maximum test load of 1000 N,reciprocating stroke of 60 mm and reciprocating frequency of 0.5~5Hz can be achieved in reciprocating friction test,the maximum test load of 500 N,rotating speed 30~3000rpm can be achieved in end-face friction test and the maximum test load of 500 N,line speed 0.15~15m/s can be achieved in reciprocating friction test.2.The major mechanical systems of testing machine are designed,including loading system, power system and clamping system. The three-dimension solid model of all parts has been established, and the structure assembly and interference inspection have been accomplished too by UG.3.The strength and stiffness of rotating spindle and vertical guide pillar is analyzed and checked by using the finite element analysis software ANSYS Workbench.In addition,for getting the inherent frequency and rotation speed range of the rotating spindle,modal analysis of rotating spindle was also carried out,4.The dynamic characteristics of reciprocating motion system is simulated under maximum operating conditions by UG motion simulation module,and the displacement,velocity,acceleration and force characteristic curve of moving stand were achieved.Then optimizing the reciprocating motion system according to the simulation result, and achieved good consequent.5.The dynamic characteristics of loading system in loading process is simulated and analyzed by UG motion simulation module,and the displacement,velocity and force characteristic curve of of loading support frame were achieved.the result shows loading system is well designed.