Improve the precision methods of gear hobbing processing technology.
The gear is the main component in the transmission, and the level of its machining precision directly affects the overall quality of the transmission.
Release time:
2025-03-07
The gear is the main component in the gearbox, and the level of its machining precision directly affects the overall quality of the gearbox. Currently, the tooth processing method we use is the gear hobbing and shaving method. To manufacture high-precision gears through hobbing and shaving processes, it is essential to fully utilize the levels of these processes. The shaving precision largely depends on the hobbing precision, so strict control of certain error items in hobbing is necessary to produce high-quality gears. Hobbing is a commonly used gear processing method, and on high-precision hobbing machines, using hobs can produce gears with precision levels of 4-5. On ordinary hobbing machines, using standard precision hobs can only produce gears with a precision level of 8. The precision requirement for the gearbox shaft gear is 8-7-7 levels, so analyzing the sources of errors in hobbing and mastering methods to ensure and improve machining precision is very important.
1 Hobbing Machining Precision Analysis
The precision of the shaft gear is mainly related to motion precision, stability precision, and contact precision. In hobbing processing, the control of the public normal line length and the radial runout of the tooth circle is used to ensure motion precision.
To ensure motion precision, the control of tooth profile errors and base pitch deviations is used to ensure stability precision, and the control of tooth direction errors is used to ensure contact precision. Below is an analysis of several common sources of errors that may occur in hobbing processing:
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Improve the precision methods of gear hobbing processing technology.
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2025-03-07
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