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Lookup NU author(s): Dr Jishan Zhang
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In this study, advanced computerized numerical control worm gear oil test rig and standard test programs were developed to enable the laboratorial efficiency evaluation of worm gear oils. It uses specially designed full size worm gear box, which is easy for observation, dismantle and reassemble. Worms and worm gears are both standardized and strictly quality controlled. An AC motor powers this test rig. Load can be applied through a magnetic powder brake and automatically maintained by computer at high accuracy. The input and output torque, oil temperature, speed of the motor are measured on line, data are streamed into computer for efficiency calculation and further analyses. The efficiency evaluation procedure of worm gear oil follows a standard computer program to simulate the practical working condition of worm gear transmission. A strict running-in process was conducted first to ensure the same initial condition of worm gear pairs before any test. Efficiency evaluation of worm gear oil was designed to continuously run the lubricated worm gear box under stable load condition until the setting up of its thermal balance, it is a 20-hour one-stage test. Overall 35 worm gear oils are tested using this rig. Some key lubricant manufacturers of China supplied most of these oils. Test results showed that the performance of worm gear oils with different additive packages or base oils could be clearly distinguished, and results were with good compatibility and repeatability. These test results can be beneficial to both the worm gear oil manufacturers and users.
Author(s): Wu X, Zhang J
Editor(s): Huang, T
Publication type: Conference Proceedings (inc. Abstract)
Publication status: Published
Conference Name: Proceeding of the 11th World Congress in Mechanism and Machine Science
Year of Conference: 2004
Publisher: China Machine Press
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