1. Diamond cutting tools should be used on precision lathes or ordinary lathes with good general accuracy and low vibration, but the rotation speed with small and stable vibration must be selected.
2. When installing the tool, the tip must be at the same height as the rotation center of the steel part, and the polishing edge must be parallel to the direction of travel. Carefully check and test cut with a 5x magnifying glass, and cut after adjustment.
3. Diamond turning tool is a precision cutting tool, and large wear is not allowed. The arc radius of the cutting edge of the tool increases, which affects the surface quality of the workpiece after cutting, so pay attention to observation during the cutting process. When the blade is sharp, the chip is complete and small, and the workpiece surface is smooth. After the cutting edge is blunt, the chip deformation is large and there is extrusion and tearing, and there are obvious burrs on the workpiece at the cutting place of the tool.
4. After the workpiece rotates, the tool tip can contact the surface of the workpiece; Never stop the machine before the tool tip leaves the workpiece to avoid damaging the tool tip. In order to effectively control the cutting depth, a dial indicator can be placed on the middle carriage.
5. The cutting speed is generally (80-150) m/min. If the machine tool meets the requirements of precision cutting, a higher cutting speed can also be selected. The cutting depth is (0.01-0.2) mm. When the surface roughness of the workpiece is required to be less than ra0.05 microns, ap<0.01mm. The feed rate is generally (0.02-0.04) mm / R. During the cutting process, the workpiece and tool shall be fully cooled to remove chips.
6. Generally, in the rough turning process, the power and rigidity of the machine tool and the ability to form iron filings are often constraints. If the best cutting parameters are selected, the maximum metal removal rate will be greatly improved. We need to consider the combination of feed and low cutting speed, such as the effective power of machine tools. Sometimes, when the power of machine tools is too low, it will lead to the use of diamond turning tools is not smooth. We need to reduce the cutting speed to a certain extent to get the appropriate power when selecting feed and speed.