为了对PDC钻头水力结构及参数进行优化设计和优选,对不同喷嘴倾角下水射流钻头齿清洗力的影响进行了实验研究.实验装置的测量杆件是根据悬壁梁原理设计的.用均布于模拟钻头刀翼上的五根测杆,可以测出水射流对模拟钻头齿上的水力清洗力.实验结果表明,一般情况下.水射流对各测杆的清洗力随喷嘴倾角的增大而增大.倾角一定时,靠近喷嘴出口的测杆受力较大.钻头外缘上的测杆受力较小. In order to optimize the design and optimization of PDC bit hydraulic structure and parameters, the influence of different nozzle tilt angle on the tooth cleaning force was experimentally studied.The measuring rod of the experimental device was designed according to the principle of cantilever beams, The five measuring rods on the blade can simulate the hydraulic cleaning force of the water jet on the simulated drill bit.The experimental results show that under normal circumstances the cleaning power of the water jet to each measuring rod increases with the inclination of the nozzle Increase.When the angle of inclination, near the nozzle exit rod force larger drill bit on the outer edge of the rod force less.