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The correction of the length direction of the contact zone is performed by changing the radius of curvature of the cutter head. The position of the contact zone is usually controlled by machine tool adjustment parameters. The correction of the contact area can be determined according to the model of the machine or the system, gear size and modulus of the cutting teeth. After inspection, the tooth surface contact area meets the requirements, and the gear is also installed on the universal gear measuring instrument to check the pitch.
The final inspection final inspection includes dimensional inspection, magnet powder inspection and other special inspection items. Whether the contact area meets the requirements is an important indicator of whether the gear is qualified. For this reason, the Zhangjiagang mill gear pairing inspection is an important inspection item. However, the pairing check limits the interchangeability of the gears. Several problems should be paid attention to in the machining of hard tooth surface of spiral bevel gear.
Control of the heat treatment process In the heat treatment, many factors affect the deformation, such as the material, the shape of the wheel blank, and the fixed installation of the workpiece during the heat treatment. Where possible, some test pieces are made to help finalize the design. Too much deformation is not enough, it will cause various problems in the hard tooth surface processing. In the case of single-piece small batch production, the deformation of the large and small gears should be checked before finishing.