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박근석,변영철,강이석,강배희,이동욱,차원준 忠南大學校 産業技術硏究所 1997 산업기술연구논문집 Vol.12 No.2
For the endurance test, it is necessary to test the portable electric tools under the same condition as the actual operation condition. It is also essential that the test equipment is convenient to fix the tool. Those are necessary to control the loaded torque and to acquire and analyze the test data with a computer. In this study, we have developed an endurance test equipment for portable electric tools, where a hydraulic control system with a proportional relief valve was applied to control the load for the test. The developed test equipment used an industrial hydraulic pump as a load supplier to ensure a firm endurance of the test equipment itself. The data acquisition system has been automated by composing with a personal computer and RS-232C communication nets. This test equipment reduced the manhour for the test and also improved the reliability of the tested data which were measured and graphed.