How to determine the size and length of the positioning pin
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The attached picture shows that the ring gear is divided into two semi-circles and then fixed with positioning pins. The positioning pins are GB/T120.2 cylindrical pins 30×70-A. If you have any questions, please ask experts. 1. How to choose the size of the positioning pins and whether the diameter must be determined by calculation. and length, how to calculate it simply? 2. Is the structure of adding a cylindrical pin to the hole at the joint of the two semicircles reasonable? The pin hole is a blind hole. Do you need to consider the exhaust problem during installation? 3. The pin hole is processed after the two halves of the gear are combined together. How to fix the hole and is the tooth shape also fixed and then processed?
There is another question. The positioning pin is a standard part. Why do the general pin holes use the base hole system instead of the base shaft system as required? What is the relationship between the depth of the pin hole and the length of the cylindrical pin? Does the depth need to be greater than the length or equal to the length?