CNC machining using low speed range applies to which?

In modern manufacturing, CNC machining technology has become a key technology to improve productivity and product quality. In the process of CNC machining, it is important to choose the right cutting speed to ensure the quality of the workpiece, extend tool life and reduce production costs. In this paper, we will explore the scenarios applicable to CNC machining using a low speed range.

Cutting speed is the linear velocity of the contact point between the tool and the workpiece in a unit of time. The choice of cutting speed directly affects parameters such as cutting force, cutting temperature and surface roughness. Generally speaking, the higher the cutting speed, the higher the cutting temperature, the smaller the cutting force, and the larger the surface roughness. Therefore, when selecting the cutting speed, it is necessary to consider it comprehensively according to the specific situation.

In the following cases, CNC machining using a low speed range is applicable:

1. Machining higher hardness materials: When machining higher hardness materials, such as carbide, hardened steel, etc., the use of lower cutting speeds can reduce the cutting temperature, reduce tool wear and improve tool life. At the same time, low-speed cutting helps to reduce cutting force, reduce vibration and improve machining accuracy.

2. Roughing: In the roughing stage, the main goal is to remove excess material as soon as possible, at which time a larger depth of cut and a larger feed rate can be used. Due to the greater depth of cut, the tool and workpiece contact area is larger, the cutting force is larger, so you need to use a lower cutting speed to reduce the cutting temperature, reduce tool wear.

3. The use of high-speed steel cutting tools: high-speed steel cutting tools at high temperatures in the hardness and wear resistance is poor, so in the use of the need to choose a lower cutting speed. At the same time, high-speed steel tools are suitable for low-speed cutting, which can give full play to its advantages of good cutting performance and strong impact resistance.

4. Processing thin-walled parts: in the processing of thin-walled parts, due to the poor rigidity of the parts, easy to produce deformation. The use of lower cutting speed can reduce the cutting force, reduce the risk of deformation of the parts.

5. Improve surface quality: in the processing of higher surface quality requirements, such as mirror processing, high-precision bearings, etc., the use of lower cutting speed can effectively reduce the surface roughness and improve surface quality.

6. Processing complex surfaces: in processing complex surfaces, due to the complexity of the tool trajectory, cutting speed changes, the use of lower cutting speed can reduce the cutting temperature, reduce tool wear and improve machining accuracy.