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深孔加工技术是指使用特殊的切削头(深孔钻)、采用高压冷却润滑液对长径比L/d≥5的深孔进行加工的方法。它的长径比大都能达到50～100,极深孔可达到300以上。深孔加工切削头的主要特点是:切削头的钻尖位于轴线的一侧,且常为一个内切削刃,一个或若干个外切削刃,并在主切削刃的下方和对称位置分别有支承和导向的垫块(一般称导向条)。切削头依据三点定圆的原理自行导
Deep-hole processing technology refers to the use of special cutting head (deep hole drilling), the use of high-pressure cooling fluid on the aspect ratio L / d ≥ 5 deep hole processing methods. Its aspect ratio than most can reach 50 to 100, very deep hole can reach 300 or more. Deep hole machining cutting head is characterized by: the cutting tip is located on one side of the axis of the drill, and often an inner cutting edge, one or several outer cutting edge, and the main cutting edge and symmetrical position below the support And the guide pad (generally known as the guide bar). Cutting head according to the principle of three-point round-based self-guided