Scientific

Original tooth profile angle error of gear hobbing hob

The linear part of the side edge of gear hobbing hob mainly completes the generation of gear tooth profile, but there are inevitable errors in the manufacturing of gear hobbing hob, which will produce the original tooth profile angle error of gear hobbing hob. When the gear crown angle...

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Formation mechanism of gear hobbing profile error

Gear hobbing processing and application practice show that the manufacturing errors of machine tools, cutting tools and gear blanks are reflected on the processed gears to varying degrees, resulting in gear motion error, stationarity error and tooth contact error. In gear hobbing, the normal distance between the actual tooth...

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Stress analysis of gear hob shaft

According to the stress analysis of gear hobbing hob, further analyze the stress of gear hobbing hob shaft, as shown in the figure. From the stress of gear hobbing hob shaft, it can be seen that all parts of the torque on the gear hobbing hob shaft at a...

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Vibration caused by automobile gear assembly error

The speed of driving wheel is 1200 R / min, the meshing frequency of automobile gear is 160 Hz, the rotation frequency of driving wheel is 125 Hz and the rotation frequency of driven wheel is 25 Hz. (1) The vibration refinement spectrum of automobile gear under normal assembly...

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Forming method of gear hobbing tooth profile

The forming method of gear hobbing tooth profile is shown in the figure. Starting from the contact cutting between gear hobbing hob and workpiece, the number of cutter teeth involved in cutting gradually increases, and will not increase after reaching a certain degree. When the cutting is about to...

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Vibration caused by natural frequency of automobile gear

All defective automobile gears will produce high-level pulses in operation, which will usually arouse the natural frequency (also known as natural frequency) of automobile gears. The test diagram of vibration amplitude spectrum caused by natural frequency is shown in the figure. Substitute N1 = 624 R / min and...

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