In order to achieve the precise surface of the processed parts, the hardware parts processing technology needs to adopt ideal processing principles and precise forming movements. However, in actual work, precise machining process principles are difficult to achieve, and there is a big gap between the ideal value. If the pursuit of precise theories is solely for the pursuit of precise theories, it will often seriously affect the processing efficiency and fail to achieve the expected economic benefits.
The main factors affecting the cold work hardening of hardware parts are as follows:
1. Factors of the processed material: the hardness of the processed material is small, and the greater the degree of cold work hardening of the material with greater plasticity.
2. The shape factors of the tool: the rake angle of the tool, the fillet of the cutting edge and the amount of wear behind the tool have a great influence on the cold work hardened layer. When the rake angle decreases and the amount of wear on the cutting edge and the back increases, the depth and hardness of the cold work hardened layer also increase.
3. Cutting parameters for hardware parts processing: changes in cutting speed and feed have a greater impact on cold work hardening. When the cutting speed increases, the contact time between the tool and the workpiece is short, the degree of plastic deformation is small, and the hardened layer and hardness are reduced. As the feed speed increases, the degree of plastic deformation increases, and the degree of surface cold work hardening increases.