针对不锈钢阀体零件中小深孔加工的问题,分析了不锈钢小深孔高速钻削加工技术难点。针对切削热和排屑问题2个关键问题,分别讨论了切削热、切屑的产生与钻削速度的关系,提出利用高压大流量切削液解决上述问题。对比实验证明,在使用高速内冷钻头和高压大流量切削液的情况下钻头寿命、加工效率与普通钻削相比都有显著提高。 Aiming at the problem of small deep hole machining of stainless steel valve body parts, the technical difficulties of high speed drilling of small deep hole of stainless steel are analyzed. According to the two key issues of cutting heat and chip removal, the relationship between cutting heat, chip generation and drilling speed was discussed respectively, and the use of high pressure and high flow cutting fluid was proposed to solve the above problems. Comparative experiments show that the use of high-speed internal cooling drill and high-pressure high-flow cutting fluid in the case of bit life, processing efficiency compared with conventional drilling have significantly improved.