Milling flat machines represent a direction in the development of engraving and milling machines, characterized by their high speed and precision. Cutting tools are a crucial factor in CNC machining processes, influencing both the efficiency of machine tools and the direct quality of the parts being processed. How should one choose cutting tools for milling flat machines? Join us as we explore this topic.
Select cutting tools based on the machinability of the part material.
For machining high-strength steel, titanium alloys, or stainless steel parts, it is recommended to choose wear-resistant, indexable carbide cutting tools.
Select cutting tools based on the processing stage of the parts.
During the rough machining stage, the focus is on removing excess material, so it is advisable to choose tools with good rigidity and lower precision. In the semi-finishing and finishing stages, the priority is to ensure the machining accuracy of the parts and product quality, thus high durability and higher precision tools should be selected.
If coarse and fine machining use the same cutting tools, it is recommended to use the tools discarded from fine machining for coarse machining. This is because the worn condition of these discarded tools is mostly minor edge wear and coating wear, which can be polished off. Continuing to use them may affect the quality of fine machining, but has a lesser impact on coarse machining.
3. Select cutting tools and geometric parameters based on the characteristics of the processing area.
When the part structure permits, it is advisable to use tools with larger diameters and smaller length-to-diameter ratios. The end cutting edge of the over-center milling cutter for thin-walled and ultra-thin-walled parts should have sufficient radial angle to reduce cutting force between the tool and the cutting area. When machining parts made of softer materials like aluminum and copper, choose a face mill with a slightly larger rake angle, and do not exceed 4 teeth.
4. The size of the cutting tools corresponds to the surface dimensions of the workpiece being processed.
During production, the processing of the peripheral contours of flat parts commonly uses face milling cutters; for planar milling, select hard alloy blade milling cutters; for processing bosses and grooves, choose high-speed steel face milling cutters; for roughing or finishing the blank surface or holes,镶硬质合金刀片的玉米铣刀 can be selected; for the processing of some three-dimensional surfaces and variable-angled contour shapes, ball-end, ring, cone, and disk milling cutters are often used.
