Tool vibration is a very harmful phenomenon, which seriously affects the surface quality and performance of parts. There will be relative displacement between the tool and the workpiece, which makes the tool easy to wear and even chip. Today we will learn about the measures in deep hole processing Can reduce knife vibration.
The first is to choose a reasonable blade and tool holder to reduce the cutting force. The length-to-diameter ratio of the tool holder for deep hole processing is greater than 10. It is necessary to use a cutter holder with a vibration-reducing function. When the main deflection angle is increased, the radial cutting force decreases. As the cutting force increases, without affecting the strength of the tool, the deep hole machining should increase the entering angle as much as possible.
The second is to adjust the cutting depth and feed rate. In deep hole machining, the feed rate affects the shape and length of chips. If the feed rate is too large or too small, it will lead to poor chip breaking; when the cutting depth increases, the cutting area increases. Larger cutting force increases proportionally, and it is necessary to comprehensively determine the size of each parameter according to the material of the part, the size of the inner hole, the surface quality of the part and the chip removal condition during the adjustment of the machine tool.
The third is to select the appropriate clamping position and datum surface according to the structure of the part. Under the condition of ensuring the accuracy of the two positioning datums, the rational use of over-positioning can increase the rigidity and reduce the relative displacement between the workpiece and the tool.
