Talking about the processing principles and safety precautions of mechanical processing

What are the processing principles of machining? What are the safety precautions during machining? To answer these two questions in detail, I hope it will be helpful to readers. The specific content is as follows. 1. The processing principle of mechanical processing The processing principle of mechanical processing has three specific points, as follows: (1) For processing accuracy, rough and fine processing are carried out separately. Because of the large amount of cutting during rough machining, the workpiece is subjected to large cutting force, clamping force, heat generation, and the machined surface has a significant work hardening phenomenon, and there is a large internal stress inside the workpiece. If rough and rough machining Continuously, the precision of the parts after finishing will be quickly lost due to the redistribution of stress. For some parts that require high machining accuracy. After rough machining and before finishing, low temperature annealing or aging treatment procedures should also be arranged to eliminate internal stress. (2) Choose equipment reasonably. Rough machining is mainly to cut off most of the machining allowance and does not require high machining accuracy. Therefore, rough machining should be carried out on a machine with greater power and less precision, and the finishing process requires higher precision. Machine tool processing. Rough and fine machining are processed on different machine tools, which can not only give full play to the equipment capabilities, but also extend the service life of precision machine tools. (3) In the machining process route, a heat treatment process is often arranged. The location of the heat treatment process is arranged as follows: In order to improve the cutting performance of the metal, such as annealing, normalizing, quenching and tempering, etc., it is generally arranged before mechanical processing. In order to eliminate internal stress, such as aging treatment, quenching and tempering treatment, etc., it is generally arranged after rough machining and before finishing. In order to improve the mechanical properties of parts, such as carburizing, quenching, tempering, etc., it is generally arranged after machining. If there is a large deformation after heat treatment, the final processing procedure must be arranged. 2. Safety precautions during machining (1) Easy to operate, reduce walking back and forth, and avoid unnecessary bending and tiptoe movements. (2) The positioning is accurate and reliable to prevent malfunctions due to slight vibration. (3) The movement direction of the operating parts of the machine tool equipment and the movement direction of the operated parts must comply with the regulations, and have simple symbols and signs. (4) Install the necessary interlocking mechanism to prevent uncoordinated actions of the operating parts and accidents caused by uncoordinated operation of multiple persons. (5) The structure and arrangement of handles, handwheels, and buttons must comply with regulations. The start button should be installed in the case or a guard ring to prevent accidental touch. The handwheel and handle installed on the shaft rod will hurt people when the knife is automatically moved along with the shaft rotation. Therefore, an automatic release device should be installed. Unless specified, the article is the original large-scale machining of Tiecheng Machinery, welcome to reprint! Please indicate the address of this article for reprinting, thank you. Article source: http://www.wxdtc.com/news.asp