Feed speed and cutting speed are two important parameters in the machining process of CNC machine tools. These two parameters affect the manufacturing efficiency of CNC machine tools, the quality of machined parts, and the service life of tools in real time. Cutting speed measures power consumption, while feed speed controls finished surface roughness and machining time. This article will introduce the knowledge of the speed and cutting speed of the CNC machine. Including concepts, different effects, how to choose the appropriate cutting speed and feed speed, the optimization method of cutting speed and feed speed, the selection strategy in practical applications, etc.
The basic concept of cutting speed and feed speed
The cutting speed refers to the length of the material cutting in the unit time, which is usually represented by m/min; The feed speed refers to the distance the tool moves in unit time, usually expressed in mm/min. Both are important factors affecting processing efficiency and processing quality.
The effect of cutting speed and feed speed
1. Thecutting speed
Cutting speed is an important factor that determines cutting effect and machining quality. In the machining process, the appropriate cutting speed can effectively improve the machining accuracy and machining surface finish, and reduce tool wear and processing temperature. When setting the cutting speed, we usually have to consider many factors, including the type of material, the shape, and size of the workpiece, and the type of props and materials. Generally speaking, high cutting speed should be used, but the cutting effect and the life of the tool should be ensured.
2. The feed speed
The feed speed is an important factor in determining processing efficiency and processing costs. During processing, the appropriate feed speed can effectively improve processing efficiency and reduce processing costs. There are many factors that need to be considered in the setting of feed speed, including the type of material, the shape of the workpiece, and the type and material of the tool. Generally speaking, high progress should be made as much as possible, but the processing effect and processing accuracy should be ensured.
How to choose the right cutting speed and feed speed
When choosing cutting speed and feed speed, we should consider the following factors. When selecting the cutting speed and feed speed, the following factors should be considered:
1. Type and hardness of processing materials
In General, the higher the hardness of the material the lower the cutting speed, and the smaller the feed speed.
2. Type and material of the tool
Generally speaking, the cutting speed of the tool is greater than the cutting speed of the workpiece, so that the tool can effectively sweep the metal dandruff after processing.
3. Theshape, and accuracy requirements of the workpiece
Different shapes and sizes of machining parts require different cutting speeds and feed speeds. For workpieces required for more accuracy, the cutting speed and feed speed should be appropriately reduced to avoid affecting the quality of processing.
How to optimize CNC machining cutting speed and feed speed？
In CNC cutting, optimizing the setting of cutting speed and feed speed can effectively improve processing efficiency and processing quality.
The specific method is as follows:
- Choosing suitable cutting tools and using high-speed cutting tools can greatly improve cutting efficiency and reduce cutting load.
- For workpieces with complex processing, the appropriate knife road strategy can optimize the cutting speed and the setting speed settings to achieve better processing results.
- Adopting advanced cutting theory, such as high-speed cutting technology, bridge processing centers, imitation processing, etc. can further improve the processing efficiency and processing quality of CNC milling machines.
The selection strategy in actual applications
Cutting speed: when selecting the cutting speed, it is necessary to consider the workpiece hardness, material, tool material, and other factors. For example, when machining alloy steel, the cutting speed of high-speed steel tools is usually lower, and the cutting speed of cemented carbide tools is usually higher
Feed speed: The selection of feed speed requires a balanced processing efficiency and the quality of the workpiece. In CNC programming, the feed rate is set by the programmer, and it needs to be adjusted according to the specific processing needs.
Conclusion
The cutting speed determines the cutting effect and processing quality, and the processing speed determines processing efficiency and processing costs. When selecting the cutting speed and feed speed, it is necessary to comprehensively consider the requirements of the workpiece, the material and shape of the tool, and the hardness of the processing material. Choosing the appropriate parameter can effectively improve the quality and efficiency of processing. In DMTC, our experienced engineers and mechanics can meet different processing needs to ensure the production of the parts and products you need.
(Learn How Shear Forces Affect Metal Cutting Results)
Common questions and answers
1. Is the cutting speed and feed speed the same?
Different, the cutting speed is the speed of the cutting tool through cut material. The feed speed is the speed of cutting material through the cutting tool.
2. Why should engineers consider cutting speed and feed speed during CNC processing?
In the process of CNC processing, engineers must consider cutting speed and feed speed, because this directly affects the quality of the finished product. If the cutting speed is too slow, the material will not cut cleanly, which can lead to burrs and other imperfections. (Learn more about the problem)
