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Ⅰ THE STRUCTURAL DESIGN OF HIGH TEMPERATURE RECIPROCATING FRICTION TESTING MACHINE ABSTRACT The text relate to the friction of the pilot machine is high temperature reciprocating friction testing machine. Main measure of material in high temperature condition that a reciprocating sports wear performance. Designed primarily for smes. According to high temperature reciprocating the friction in designing the machine's main argumentsfriction, Set out the test of the structure of sports exercises and programmes. Drive mode used motor drivers , Clearing structure has chosen a simple and flexible mechanism of the crank rockers .Through the crank rockers institutions to implement the exercise of the connecting rod, connecting rods in the report of the device package achieved by their line of sports, the spring load a system stress the realization of the output , at the same time can be reduced to measure the impact, and to measure gage pressure. Heating element realise a test of the high temperature, and use the thermocouple for temperature measuring.Then to reciprocating the friction in various parts of the machine.The parts of the multiple choice, identify out of the pilot machine designed to the form and structure of a comprehensive and detailed design calculations. Finally, Autocad software will make use of a reciprocating the friction of the machine parts and components assembly drawing a map drawn. KEY WORDS: Structural design;Friction; Testing machine