Although a specialist technique, machining using face and taper toolholding technology comes into its in applications where side thrust is a possibility – typically in heavy-duty milling operations. Here, side deflection could be detrimental to precision and consistency of cut. In such circumstances, the rigidity of the spindle/toolholder connection can impact positively on insert life.
Toolholders of this format also offer sustained precision and resistance to deflection when machining using tools with extended length or overhang, and in processes such as deep pocketing or deep-hole boring.
A Gewefa toolholder fitted in a suitable spindle offers two mating surfaces – on both the gauge line (taper) surface and horizontal flange (face) surface. This connection differs from conventional taper tools in that both of the contact surfaces between the toolholder and spindle are precision ground to the exact standard. When the drawbar is activated on the machine, the toolholder is secured in the spindle to contact on all surfaces, creating a rigid contact environment that is resistant to vibration and deflection.
