钻尖数控刃磨中的尾隙角研究

通过对尾隙角的分析研究,提出了作用尾隙角的概念,给出了作用尾隙角的计算方法,研究了刃磨参数对作用尾隙角的影响.给出了作用尾隙角在数控刃磨求取刃磨参数中的应用方法.研究表明,尾隙角是关系到钻头钻削性能的重要参数,数控刃磨中的几个刃磨参数对它的影响程度由大至小的次序为θ、C_y、σ、ω、C_x.

Study on Effect Tail Clearance Angle in NC Sharpening of Twist Drills

Through studying the flank face geometry of twist drills, a new concept of effect tail clearance angle is proposed. A method for calculating the effect tail clearance angles is given. The relations between grinding parameters and the effect clearance angles are studied.This paper also shows how to use the new concept as a further criterion to arrive at a solution to the conical grinding method for a drill of given specification. The results show that the tail clearance angle is a very important parameter to drills performance, and the sharpening parameters determine the tail clearance angle. Five sharpening parameters have different effect on the tail clearance angle, θ has the most significant influence and the order of the significance of the other four is C_y、σ、ω、C_x.