在磨削加工中,磨削液不仅具有冷却、润滑作用、而且能抑制与消除砂轮堵塞现象发生。在高速磨割加工时,砂轮表面紧贴着一层随砂轮转动的强空气流。用普通喷嘴向磨削区喷射磨削液时,磨削液往往不能冲断这种空气流,空气贴着砂轮表面进入磨削区,于是出现磨削区的磨削液供给量不足的问题,使高速磨削、超高速磨削的优点不能得以充分发挥。日本丰田工机开发的凸轮磨床,采用了如图所示的直角喷嘴,磨削液喷射在砂轮工作面上,隔断空气流,磨削液贴在砂轮表面随砂轮转动,取代了上述的强空气流。实验证明,采用普通喷嘴时,随着砂轮线速度的提高,的磨削液压力呈下降趋势;当线速度超过80m/s时, In the grinding process, the grinding fluid not only has the cooling, lubrication, but also inhibit and eliminate the phenomenon of wheel blockage. Grinding in the high-speed grinding, the wheel surface close to a layer of strong air flow with the wheel rotation. When the grinding fluid is jetted to the grinding zone by a common nozzle, the grinding fluid often can not break the air flow, and the air sticks to the grinding zone on the surface of the grinding wheel. Therefore, there is a problem that the amount of grinding fluid supplied in the grinding zone is insufficient, So that the advantages of high-speed grinding, ultra-high-speed grinding can not be fully exploited. Japan Toyota machine developed cam grinder, using a right-angle nozzle as shown, the grinding fluid jet on the working face of the wheel, cut off the air flow, the grinding fluid attached to the wheel surface with the wheel rotation, replacing the above-mentioned strong air flow. Experiments show that, with a common nozzle, with the grinding wheel line speed increases, the grinding fluid pressure shows a downward trend; when the line speed exceeds 80m / s,