Analysis of Three Machining Routes for Machining Groove of Precision Parts
In precision parts processing, there are plane processing, hole processing, etc., but do you know the groove processing? The groove processing should be difficult to process and also requires high cutting tools.
1. For grooves with relatively small width and depth values and low accuracy requirements, a tool with the same width as the groove can be directly cut into a one-time molding method. After the tool cuts into the low groove, the delay command can be used to make the tool stay for a short time. The low roundness of the groove can be trimmed, and the tool feed speed can be used when withdrawing the tool.
2. For deep groove parts with small width value but large depth value, in order to avoid too high forward pressure of the tool and tool damage due to poor chip removal during grooving, feed by stages shall be adopted. In this method, after the cutter cuts into the workpiece to a certain depth, the precision part processing stops feeding and returns to a certain distance to achieve the purpose of chip breaking and chip removal. At the same time, try to select a tool with higher strength.
3. For wide groove cutting, in order to cut a wide groove, a groove wider than the tool width is usually called a wide groove. The width and depth of the wide groove have relatively high precision requirements and surface quality. When cutting wide grooves, generally use a row of tools for rough machining, and then use a fine grooving knife to cut one side of the groove until the groove is low, while the height of the finishing groove is the same as that of the other side of the groove, and then exit along the side.
Therefore, when precision parts are processing part grooves, the most important thing to pay attention to is the coaxiality and symmetry of the groove. Some problems about the groove depth are not serious, but the width of the keyway must be guaranteed, and the width must not be large.