Abstract
With the development of gears towards high temperature, high pressure, high speed and high stress, gear measurement, in which only the static geometric accuracy is considered, is unable to meet the current application requirements. While, the low precision and single function gear tester constrains the measurement of gear dynamic performance. For the resolution of this problem, based on the principle of gear system dynamics and several precision mechanical design techniques, a gear dynamic testing machine has been developed, providing new instruments for gear testing. On the basis of research of the principle of dynamic performance test, the primary measurement items of the testing machine have been determined. The measuring principles of each item and the driving and loading form of the testing machine have been examined. The measurement and control system of the testing machine and its corresponding software have been developed. The instrument can not only obtain the static precision index of the gear, but also obtain the dynamic performance index of the gear in variable working conditions. According to the actual test, the uncertainty of instrument is 3.8 μm and the external disturbance caused by the shaft vibration is less than 0.6 μm, which can meet the 5–6 grade precision gear testing requirement.
Highlights
The advantages of gear transmission are accurate driving, range of application, high bearing capacity, long life, high reliability, high transmission efficiency, compact structure and much more
Gear transmission is the most widely used of all mechanical transmission parts, which are essential to manufacturing equipment
The modern industrial production takes the development in the direction of high precision, high speed and multiplefunctions, so only inspecting the geometric accuracy of the gear cannot meet the requirements of gears in the conditions of high temperature, high pressure, and high speed and high stress [5]
Summary
The advantages of gear transmission are accurate driving, range of application, high bearing capacity, long life, high reliability, high transmission efficiency, compact structure and much more. Gear testing tests the conventional gear static strength, gear tooth bending fatigue strength, tooth surface wear and gear bonding test, and contains gear parameters Requirements and methods of the test, there are many different forms of gear testing equipment Their loading methods, operating methods and structural patterns are often very different. These test equipment are generally designed for specific test purposes or meeting a certain requirement, and the accuracy of some equipment is relatively low. The test results show that the instrument can meet the requirements of dynamic performance testing of 5–6 grade precision gears
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