Helical gear spiral induction heating simulation method based on ANSYS simulation platform

Abstract

The invention provides a helical gear spiral induction heating simulation method based on an ANSYS simulation platform. The number and spacing of the profiling coils in the geometric model are adjusted, and a local coordinate system DO cycle command is imported to automatically control the transformation process of the profiling coils, so the simulation of the flexible variable-speed motion process of the bevel gear relative to the profiling coils is achieved, and simulation is closer to reality. Meanwhile, ANSYS software serves as a platform in the whole simulation process, the simulation process runs automatically, operation is easy, and factory technicians can master and use the simulation process conveniently.

Description

technical field [0001] The invention belongs to the field of induction heat treatment research, and relates to a simulation method for helical gear spiral induction heating based on the ANSYS simulation platform. Background technique [0002] Gear transmission is one of the most widely used transmission methods in the field of mechanical transmission, and helical gears are widely used in the automotive industry, aerospace and shipbuilding industries due to their high transmission efficiency, stable transmission and strong bearing capacity. Taking the helical gear of a heavy-duty vehicle gearbox as an example, due to heavy loads and harsh road conditions, the gearbox as an important force-bearing unit will be subject to frequent impacts, and the gears are prone to failure forms such as tooth surface wear and tooth root bending fatigue fracture. In this case, the helical gear of the heavy-duty vehicle gearbox needs to have higher surface hardness, wear resistance and load-carr...

AI Technical Summary

Problems solved by technology

For example, helical gears used in heavy-duty vehicle gearboxes have a thick base and a small diameter. If the overall quenching method is used, the magnetic field generated by the traditional cylindrical inductor cannot be kept perpendicular to the tooth surface of the helical gear, and it is easy to appear Tooth top hardening, dedendum temperature is too low; if the method of quenching tooth by tooth along the alveolar is adopted, the tooth surface of the adjacent tooth is prone to overtempering, which will reduce the hardness of the adjacent hardened area, and when the sensor passes through When the upper and lower end faces of the helical gear, due to the end effect, the impedance of the sensor-gear system changes continuously, which causes a large temperature difference between the upper and lower end faces of the helical gear and the middle part, resulting in uneven hardness of the tooth surface

Due to the influence of the helical angle of the helical gear, when it is heated layer by layer, there will be a problem of short heating time at the local position

After the helical gear is pickled, the hardened layer in the local position is removed, and the hardness of the tooth surface is equivalent to the hardness of the core in the quenched and tempered state. The local under-quenched layer defect

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