What should be paid attention to in the customization of engine gears

The engine gear customization manufacturer tells you how to customize the engine gear. First, you need to determine whether the gear is straight or helical. The straight teeth have strong bearing capacity and large torque, but the noise is large when running at high speed. The helical tooth has a large coincidence degree, stable transmission and low noise. Suitable for high speed operation, but will generate axial forces. Then determine the module and number of teeth. In the case of the same number of teeth, the larger the module, the larger the gear. In the case of the same module, the more teeth, the larger the gear. When determining the gear size, the appropriate gear size should be selected according to the load. In the operation of rack drive, the smaller the gear, the smaller the load torque, but the number of teeth cannot be infinitely reduced, and it needs to be determined according to the actual use. Second, the accuracy of the gears needs to be determined. The uniform accuracy of our gears is grade 6. It is necessary to determine the bore diameter and tolerances of the gears. If fitted with a shaft, the dimensions of the shaft and the tolerance of the shaft should be provided.

The installation method also needs to be considered, whether it is a jack screw installation or a hot installation, as the tolerances between the holes and shafts vary depending on the installation method. The above are some parameters that need to be paid attention to when installing the gear according to the shaft output mode. The flange output and hollow shaft output need to be determined according to the design drawings.

Fan processing: The precision gear processing tool itself is a gear or a rack, and the gear hob can be regarded as a rack, which is a rack-type tool. In the process of processing and production, whether there is a "gear meshing" movement between the gear selection tool and the machined and gear mechanism. The tooth profile (tooth surface) of the gear design tool is the tooth profile (tooth surface) of a gear to be processed, which is an ideal involute, and the processing method has high precision. finishing work process).