1. Reasonable structural design
The formation of burr is largely affected by the workpiece structure. The shape and size of burr at the edge after machining are also very different due to different workpiece structures. If the workpiece material and surface treatment are predetermined, the workpiece geometry and edges are an important factor to determine the formation of burrs.
2. Proper processing sequence
The machining sequence also has a certain influence on the shape and size of the end milling burr. The workload and related costs of deburring vary with the shape and size of the burr. Therefore, selecting an appropriate processing sequence is an effective way to reduce the cost of deburring.
3. Avoid tool exit
Avoiding tool withdrawal is an effective method to avoid burr formation, because tool withdrawal is the main factor of burr formation in the cutting direction. Usually, the burr produced by milling cutter when turning out the workpiece is large, and the burr produced when turning in the workpiece is small. Therefore, the milling cutter should be avoided as much as possible in the processing process.
4. Select the appropriate cutting route
According to the previous analysis, when the plane cut-out angle is less than a certain value, the burr size is small. The plane cut-out angle can be changed by changing the milling width, feed speed (size and direction) and rotation speed (size and direction). Therefore, the generation of burrs can be avoided by selecting an appropriate cutting route.
5. Select appropriate milling parameters
End milling parameters (such as feed per tooth, end milling width, end milling depth and geometric angle of the tool, etc.) have a certain impact on the formation of burrs.
The formation of end milling burr is affected by many factors, among which the main influencing factors are: tool exit / entry, plane cutting angle, tool tip exit sequence, milling parameters, etc. The final shape and size of burr is the result of the comprehensive action of various factors.
In production, the technologies, processes and methods to suppress or reduce milling burrs, such as the method of controlling milling cutter route, the method of selecting appropriate processing sequence and the method of structural design improvement, provide a feasible technical scheme for actively controlling burr size, improving product quality, reducing cost and shortening production cycle in milling processing.