Discussion on the handling principles and safety precautions of Changzhou mechanical processing

1. Processing principles for Changzhou mechanical processing:

(1) In order to ensure machining accuracy, rough and finish machining shall be conducted separately. Due to the large cutting amount, large cutting force and clamping force on the workpiece, high heat generation, and significant work-hardening phenomenon on the machined surface during rough machining, there is a large internal stress inside the workpiece. Assuming that rough and rough machining are carried out in succession, the accuracy of the finished part will soon be lost due to the ab initio distribution of stress. Regarding certain parts with high machining accuracy requirements. After rough machining and before finishing, low-temperature annealing or aging treatment should also be arranged to eliminate internal stress.

(2) Reasonable selection of equipment. Rough machining mainly involves cutting off most of the machining allowance and does not require high machining accuracy. Therefore, rough machining should be carried out on a machine tool with high power and low accuracy, while the finishing process requires using a higher machine tool for processing. Rough and fine machining are processed on different machine tools, which can not only fully utilize equipment capabilities, but also extend the service life of fine machine tools.

(3) During the machining process, there are often heat treatment procedures arranged. The orientation of the heat treatment process is arranged as follows: In order to improve the cutting and processing functions of metals, such as annealing, normalizing, tempering, etc., it is generally arranged before mechanical processing. In order to eliminate internal stress, such as aging treatment, tempering treatment, etc., it is generally arranged after rough machining and before finishing. In order to advance the mechanical functions of parts, such as carburizing, quenching, tempering, etc., it is generally arranged after mechanical processing. If there is significant deformation after heat treatment, a final processing procedure must also be arranged.

2. Safety precautions during machining in Changzhou:

(1) Easy to operate, reduce walking back and forth, and prevent unnecessary bending and tiptoe movements.

(2) Securely positioned to prevent misoperation if there is a slight tremor.

(3) The movement direction of the operating parts of the machine tool equipment and the movement direction of the operated parts shall comply with the regulations, and be marked with simple symbols.

(4) Install necessary interlocking arrangements to prevent uncoordinated actions of operating components and incidents of uncoordinated operation by multiple people.

(5) The structure and placement orientation of handles, handwheels, and buttons should comply with regulations. The start button should be installed inside the casing or equipped with a protective ring to prevent accidental actuation. The handwheel and handle installed on the shaft can roll with the shaft and injure people during automatic feed, so it should be equipped with an automatic release device.