What are the two common machining methods?
by：Foxron
2021-11-23
In the process of machining operations, cold heat treatment is often performed. According to the temperature of the parts during operation, the processing can be divided into two types: cold and hot. Cold processing is processing at room temperature, generally used for cutting operations; hot processing refers to the temperature is lower or higher than room temperature, through temperature changes to cause physical changes to the workpiece to complete the assembly.
In addition, we also need to pay attention to the problem of moving parts: the moving parts with inertial collision must take reliable buffer measures to prevent injury accidents caused by inertia. All moving parts that are likely to cause injury accidents should be closed or shielded, machined or other protective measures to avoid operator contact. Mechanical processing equipment should be equipped with reliable limit devices as required. To avoid crushing injuries, the distance between linear moving parts or between linear moving parts and stationary parts must comply with regulations.
Pre-bending
When the plate is rolled, there is a length at each end of the plate that does not bend because it cannot touch the upper roller. It is called the remaining straight edge. In the process, the small force arm at which the plate starts to bend is called the theoretical remaining straight edge. The structure of the equipment and its bending form (symmetrical bending, asymmetrical bending) are related. The purpose of centering is to make the generatrix of the workpiece parallel to the roller axis to prevent skew. Rolling is the main process of product forming. It is divided into two types: one feed and multiple feeds. Multiple feeds are commonly used for rolling thick plates.
Plane processing
The main surface of the box body, disc-shaped and plate-shaped parts is flat. In addition to the surface roughness, the technical requirements of the plane often have to consider its shape and position accuracy. The plane can be processed by turning, milling, planing and grinding methods. The end planes of bushings and disc parts are usually processed at the same time as the outer circle or inner hole after one clamping on a lathe. Planing is suitable for single-piece small batch production or processing long and narrow planes. Milling has high productivity, and milling is used instead of planing in mass production. Surface grinding is a method of surface finishing. If it is a flat surface of a hardened workpiece or a thin workpiece. Grinding is used.
In addition, we also need to pay attention to the problem of moving parts: the moving parts with inertial collision must take reliable buffer measures to prevent injury accidents caused by inertia. All moving parts that are likely to cause injury accidents should be closed or shielded, machined or other protective measures to avoid operator contact. Mechanical processing equipment should be equipped with reliable limit devices as required. To avoid crushing injuries, the distance between linear moving parts or between linear moving parts and stationary parts must comply with regulations.
Pre-bending
When the plate is rolled, there is a length at each end of the plate that does not bend because it cannot touch the upper roller. It is called the remaining straight edge. In the process, the small force arm at which the plate starts to bend is called the theoretical remaining straight edge. The structure of the equipment and its bending form (symmetrical bending, asymmetrical bending) are related. The purpose of centering is to make the generatrix of the workpiece parallel to the roller axis to prevent skew. Rolling is the main process of product forming. It is divided into two types: one feed and multiple feeds. Multiple feeds are commonly used for rolling thick plates.
Plane processing
The main surface of the box body, disc-shaped and plate-shaped parts is flat. In addition to the surface roughness, the technical requirements of the plane often have to consider its shape and position accuracy. The plane can be processed by turning, milling, planing and grinding methods. The end planes of bushings and disc parts are usually processed at the same time as the outer circle or inner hole after one clamping on a lathe. Planing is suitable for single-piece small batch production or processing long and narrow planes. Milling has high productivity, and milling is used instead of planing in mass production. Surface grinding is a method of surface finishing. If it is a flat surface of a hardened workpiece or a thin workpiece. Grinding is used.
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