Reading volume:22 发表时间:2019/5/15 8:57:44
Today's sprocket manufacturers share: The profile of gears is processed by the profiling method. Friends who want to understand this problem quickly come to understand with the editor.
When processing the gear tooth profile, the shape of the cutting edge of the tool is the same as the profile shape of the tooth groove of the cut gear. This method of processing the tooth profile is called the profiling method to process the gear tooth profile.The profiling method is divided into two types: single tooth profiling method and whole tooth profiling method.The single-tooth profiling method uses a modular disc milling cutter, a template planer or a forming wheel to process one tooth groove one tooth groove.The whole-tooth profiling method is to draw the gear with a broach, which can process all the gear teeth at the same time.
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Analyze the fault characteristics of gears:
Using vibration theory and experimental research to analyze the tooth profile error in the gearbox, uniform gear wear, box resonance, mild shaft bending, broken teeth, shaft imbalance, severe shaft bending, axial movement, bearing fatigue peeling and pitting corrosion Vibration characteristics of nine typical faults.
In the case of tooth profile error, the frequency spectrum is generated by the meshing frequency and its higher harmonics as the carrier frequency, and the gear shaft rotation frequency and its multiplier are the modulation frequency. The meshing frequency modulation phenomenon is generated near the meshing frequency and its multiplier on the spectrogram. Sidebands with small amplitude and sparse; less frequency conversion orders appear on the demodulation spectrum.Generally the first order is the main one.When the tooth profile error is serious, the gear resonance frequency modulation phenomenon occurs with the gear's natural frequency of each order as the carrier frequency, and the gear's shaft rotation frequency and its multiplier as the modulation frequency.
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