Application skills of end mills in jewelry processing

Application skillsThe application skills of end mills in jewelry processing mainly include tool selection, clamping processing, optimization of cutting parameters and selection of cutting methods, etc. The following is a specific analysis:

Tool selection

Material and coating: Select the appropriate material and coating for the end mill based on the material of the jewelry, such as jade, metal, etc. For instance, for materials with high hardness such as jade, it might be necessary to select cutting tool materials with higher hardness and wear resistance, and consider using appropriate coatings to enhance the durability of the cutting tools.

Number of cutting edges and edge profile: Select the appropriate number of cutting edges and edge profile based on processing requirements. For instance, when processing jewelry with complex shapes or fine patterns, it might be necessary to select end mills with a larger number of edges and finer edge profiles.

Clamping processing

Cleaning and drying: End mills are usually coated with anti-rust oil when leaving the factory. If non-water-soluble cutting oil is used during cutting, a layer of misty oil film will adhere to the inner hole of the tool holder, making it difficult for the tool holder to firmly hold the tool holder and causing the end mill to loosen and fall off during processing. Therefore, before clamping, the shank part of the end mill and the inner hole of the tool holder should be thoroughly cleaned with cleaning solution, dried and then clamped.

Side locking: When the diameter of the end mill is large, even if the tool holder and the tool holder are very clean, a tool drop accident may still occur. At this point, a tool holder with a flattened notch and the corresponding side locking method should be selected to ensure the stable clamping of the tool.

Cutting parameter optimization

Cutting speed: The cutting speed should be reasonably selected based on factors such as the material of the jewelry and the material and coating of the end mill. Excessive cutting speed may lead to accelerated tool wear or a decline in the surface quality of the workpiece. If the cutting speed is too low, it may reduce the processing efficiency.

Feed rate: The selection of feed rate should comprehensively consider the material of the workpiece, the diameter of the tool and the processing requirements. Excessive feed rate may cause excessive tool load or vibration marks on the workpiece surface. A feed rate that is too slow may reduce production efficiency.

Cutting depth: Select the cutting depth reasonably based on the workpiece requirements and tool performance. Excessive cutting depth may lead to excessive tool wear or workpiece deformation. If the cutting depth is too small, it may increase processing time and cost.

Selection of cutting methods

Climb milling and reverse milling: Select the appropriate cutting method based on the processing requirements and the material of the workpiece. Climb milling is beneficial for preventing the damage of the cutting edge and improving the tool life. However, it is necessary to pay attention to eliminating the clearance of the feed mechanism and use reverse milling when there is an oxide film or hardened layer remaining on the workpiece surface. of end mills in jewelry processing