Views: 0 Author: Site Editor Publish Time: 2024-12-28 Origin: Site
CNC tool wear is an inevitable phenomenon during machining, and it usually affects machining quality, accuracy and production efficiency. The causes of tool wear can be very diverse and influenced by multiple factors. Here are some of the main causes and solutions.
1. Set the cutting speed and feed amount reasonably. According to the processing technology requirements, reasonably reduce the cutting speed and feed amount appropriately to avoid excessive load.
2. Standardize the amount of coolant put in, ensure adequate supply of coolant before processing, lower the temperature of the cutting area, and reduce thermal wear of the tool.
3. Maintain tools in time and choose appropriate tools. Reasonably select the cutting tools according to the product materials, and check the condition of the cutting tools regularly. When wear occurs, they should be repaired and replaced in time.
4. Select the appropriate cutting fluid and ensure adequate spraying or circulating cooling.
5. Ensure a safe and effective production environment, regularly check the quality of cutting fluid, and avoid the impact of environmental factors on cutting tools.
1. Cutting speed is too fast
The cutting speed is too fast, which increases the friction between the tool and the workpiece and intensifies the tool wear.
2. Unreasonable setting of cutting depth and feed amount
Excessive cutting depth or excessive feed rate will increase the load on the tool and cause excessive wear.
3. Improper use of coolant or lack of coolant
The function of coolant is to lower the cutting temperature, reduce friction, and keep the tool sharp. If the coolant is not used enough or is improperly selected, the temperature of the tool will be too high, which will accelerate the wear of the tool.
4. Selection of tool materials
When the tool quality is not good or the tool is improperly selected, the tool with poor hardness and toughness will cause wear during the cutting process. Some cutting tools use coatings (such as TiN, TiAlN, etc.) to improve wear resistance. If the coating is uneven or the coating material is of poor quality, it will also accelerate tool wear.
5. Characteristics of processed materials
Hardness, toughness and brittleness of materials: Hard materials (such as high-hardness steel, cemented carbide, etc.) cause greater wear on cutting tools because greater cutting forces are generated during cutting. Some brittle materials will cause the edge of the tool to crack and chip.
6. Tool life cycle and maintenance
If the tools are used for a long time and are not replaced or ground in time, the wear and tear of the tools will accumulate, affecting the processing accuracy and quality.
7. Use of cutting fluid
Cutting fluid can provide cooling and lubrication, helping to reduce friction between the tool and the workpiece. If used improperly or the concentration is too low, it may not be able to effectively reduce the cutting temperature, resulting in tool wear.
8. Environmental factors
Temperature changes in the CNC machining environment will also affect tool wear. For example, excessively high temperatures can cause the tool material to soften, reducing its wear resistance. In addition, dust and impurities in the processing environment will also adhere to the tool surface, further increasing wear.
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1. Set the cutting speed and feed amount reasonably. According to the processing technology requirements, reasonably reduce the cutting speed and feed amount appropriately to avoid excessive load.
2. Standardize the amount of coolant put in, ensure adequate supply of coolant before processing, lower the temperature of the cutting area, and reduce thermal wear of the tool.
3. Maintain tools in time and choose appropriate tools. Reasonably select the cutting tools according to the product materials, and check the condition of the cutting tools regularly. When wear occurs, they should be repaired and replaced in time.
4. Select the appropriate cutting fluid and ensure adequate spraying or circulating cooling.
5. Ensure a safe and effective production environment, regularly check the quality of cutting fluid, and avoid the impact of environmental factors on cutting tools.
Tool wear is caused by many factors. To solve the wear problem, cutting conditions, tool materials, workpiece materials, cooling methods, etc. need to be comprehensively considered. Reasonable processing parameters, appropriate tool selection and a good processing environment can effectively extend the service life of the tool and reduce wear.
