What are the processing principles for mechanical processing in Changzhou? What are the safety precautions during mechanical processing?
1. Processing principles for Changzhou mechanical processing:
(1) To ensure machining accuracy, rough and fine machining should be separated. Due to the large cutting amount during rough machining, the workpiece is subjected to high cutting and clamping forces, generates more heat, and exhibits significant work hardening on the machining surface. There is a significant internal stress in the workpiece. Assuming that rough and rough machining are carried out consecutively, the precision of the precision machined part will be quickly lost due to the de novo distribution of stress. Regarding certain parts that require high machining accuracy. After rough machining and before precision machining, low-temperature annealing or aging treatment should also be arranged to eliminate internal stress.
(2) Reasonably select 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 machine tools with high power and low precision, while precision machining requires the use of larger machine tools. Rough and fine machining are processed on different machine tools, which can fully utilize the equipment's capabilities and extend the service life of fine machine tools.
(3) During the mechanical processing process, heat treatment procedures are often arranged. The arrangement of heat treatment process direction is as follows: to improve the cutting function of metal, such as annealing, normalizing, tempering, etc., it is generally arranged before mechanical processing. To eliminate internal stress, such as aging treatment, quenching and tempering treatment, etc., it is generally arranged after rough machining and before precision machining. In order to advance the mechanical function of the 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 in Changzhou mechanical processing:
(1) Easy to operate, reduces back and forth movement, and prevents unnecessary bending and tiptoe movements.
(2) Secure positioning to prevent accidental movements if there is a slight tremor.
(3) The movement direction of the operating parts and the movement direction of the operated parts of the machine tool equipment must comply with 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 the handle, handwheel, and button should comply with regulations. The initiation button should be installed inside the casing or equipped with a protective ring to prevent accidental triggering. The handwheel and handle installed on the shaft will roll with the shaft and cause injury during automatic feeding, so the equipment should be automatically removed.