Evaluating the accuracy of machining an acsimometer screw using the contact mark standard

Abstract

Normally, after manufacturing, screws are often heat-treated and ground to achieve accuracy according to technical requirements. There are many types of screws, each with different processing methods, so after machining, it is necessary to evaluate the accuracy. to ensure technical requirements before being put into use. In this article, we use contact traces to evaluate the accuracy after machining 40Cr alloy steel Acsimet screws based on contact vets standards when engaging.