Grinding Methodology Research for Helical Drill Based on the Biglide Parallel Grinder

A new grinding method for the helical drill point based on a biglide parallel grinder was introduced in this paper. According to the mechanism description and kinematics analysis about the biglide parallel grinder, the mathematical models for the flank surface near the chisel edge was established in Cartesian coordinate frame and parametric form respectively. Moreover, the simulation of the flank surface was conducted. It was also discussed the effects of the velocity of the two glider and the distance between two gliders on determining the flank surface distribution near the chisel edge. Experiments have been implemented on the biglide parallel grinder and the helical drill point can be realized based on optimizing grinding parameters of the biglide parallel grinder. Therefore, the grinding helical drill can be obtained with the optimized parameters.