Milling insert machining accuracy requirements: how to improve quality?

Milling insert machining is a common method of metal machining, and its accuracy requirements are critical to the quality of the process. In order to improve the accuracy of insert machining, the following are some suggestions:

Milling insert machining is a common method of metal machining, and its accuracy requirements are critical to the quality of the process. In order to improve the accuracy of insert machining, the following are some suggestions:

1. Choose the right tool material: the choice of tool material has an important impact on machining accuracy. Commonly used tool materials include high-speed steel, carbide and ceramics. For higher precision requirements of cutting, you can choose carbide or ceramic tools, these tools have better hardness and wear resistance, and can provide higher cutting accuracy.

2. Optimize tool structure: the structural design of the tool directly affects the cutting quality. When designing the tool structure, the rigidity and stability of the tool need to be considered. Higher rigidity can reduce tool vibration and improve machining accuracy. Stable tool structure can reduce the fluctuation of cutting force, thus improving cutting accuracy. In addition, accessories such as tool preloading devices and vibration-damping bushings can be used to further improve cutting accuracy.

3. Accurate tool installation: Tool installation is a very critical step in cutting. Incorrect tool installation may lead to tool deflection or tilt, which in turn affects machining accuracy. Therefore, when installing the tool, it is necessary to ensure the precision of the fit between the tool and the toolholder or shank, and a suitable fixture should be used to fix the tool and operate in strict accordance with the requirements of tool installation.

4. Select the appropriate cutting parameters: the choice of cutting parameters for machining accuracy also has a great impact. When machining inserts, you need to reasonably select the cutting speed, feed rate and depth of cut and other parameters. Usually, higher cutting speed and smaller feed rate is conducive to improving cutting accuracy. However, when selecting cutting parameters, it is also necessary to consider the material and hardness of the tool, as well as the material and shape of the workpiece and other factors.

5. Tool grinding and maintenance: Tool grinding and maintenance are important steps to maintain machining accuracy. Tool grinding can repair the cutting edge of the tool to maintain good cutting quality. At the same time, regular tool inspection and maintenance, timely replacement of badly worn tools can maintain cutting accuracy and workpiece quality.

6. Fine adjustment of processing parameters: in actual processing, may also need to make some fine adjustments according to the specific circumstances. For example, when vibration or noise problems are encountered in cutting processing, cutting parameters can be adjusted appropriately to minimize vibration and noise. In addition, it can also be combined with processing experience and continuous testing to gradually improve and adjust the processing parameters to achieve higher processing accuracy.

To sum up, to improve the precision of insert machining, it is necessary to choose suitable tool materials, optimize the tool structure, accurately install the tool, choose appropriate cutting parameters, carry out tool grinding and maintenance, and make fine adjustments according to the actual situation. These methods can help improve the quality and accuracy of semi-fine milling insert machining and achieve better machining results.