In order to improve the processing efficiency of the aluminum alloy hole, measures for increasing the machining allowance and increasing the feed rate have been adopted in the design of the drilling process, and as a result, the chip becomes thick and long. This thick and long chip wound on the drill bit may cause the tool to break; in addition, the “biting†of the chip into the surface of the workpiece will impair the surface roughness and dimensional accuracy of the hole; and the introduction of these defects into the next process will result in downtime trimming and increase. The trouble of cleaning. In order to maintain a large margin, fast-feed drilling, and eliminate the drawbacks of thick and long chips, the Japanese company developed a PCD drill with secondary chip breaking. By designing the cutting edge of the drill tip into a shape capable of secondary chip breaking, the generated chips can be finely shredded, thereby effectively solving the chip control problem of the aluminum alloy hole processing.
Heilongjiang Junhe Building Materials Technology Co., Ltd , https://www.junhejiancai.com