Research on the Cutting Performance of End Mills in the Processing of Lock Parts

In the processing of lock parts, the research on the cutting performance of opposite milling cutters can be carried out from aspects such as the improvement of tool structure, the application of coating technology, the optimization of cutting parameters and the adjustment of processing strategies. The following is a specific analysis:

Tool structure improvement

Improving the design of the cutting edge and tooth part of the end mill can produce sharper and stronger positive rake Angle cutting edges and special groove shapes, which can reduce cutting resistance and enhance the rigidity of the tool. For example, the special slot shape design is more conducive to chip removal, while suppressing the formation of burrs and improving the processing quality of the slot.

By adopting the helical groove design with unequal pitch and unequal lead, a series of anti-vibration end mills are formed, which improves the surface quality of the processed parts and achieves stable and efficient processing.

Improving the structure of the cutting edge tip, such as designing an anti-vibration right-angle flat end mill with an enhanced edge band structure, can produce a more vertical wall surface and improve the processing accuracy.

Coating technology application

The application of composite multi-layer structure coatings with lubricity, wear resistance and high-temperature oxidation resistance, such as AE coating, can suppress the generation and propagation of cracks and stabilize the processing of high-hardness materials.

Selecting the appropriate coating for specific materials, such as using AlCrN coating when processing titanium alloys, can increase the surface hardness of the tool and its high-temperature oxidation resistance, thereby extending the tool’s service life.

Cutting parameter optimization

Optimize the cutting parameters, including cutting speed, feed rate and cutting depth, based on the material properties of the lock parts (such as hardness, thermal conductivity, etc.). For instance, when processing high-hardness materials, it is advisable to appropriately reduce the cutting speed and feed rate to minimize tool wear.

Determine the optimal combination of cutting parameters through experiments or cutting databases to improve processing efficiency and surface quality.

Adjustment of processing strategy

Select the appropriate type and diameter of end mills based on the shape and size of the lock parts. For example, when processing small and complex-shaped parts, small-diameter end mills are selected; When processing large planes, large-diameter face milling cutters should be selected.

Adopting a stratified processing strategy, controlling the cutting depth of each time, reducing tool load and vibration, and improving processing accuracy and surface quality.

Optimize the tool path, reduce idle travel and tool change time, and improve processing efficiency. For instance, plane milling can be carried out by using the row cutting method or the ring cutting method, and the surface can be processed by feeding or retracting the tool along the tangent direction of the surface.