How to choose carbide shim for threading inserts

Threading Inserts inclination angle and the processing of the lift angle, blade angle should be consistent with helix angle, in order to avoid interference and as far as possible to avoid shortening the service life of the carbide insert flank wear. The helix angle can be calculated, the blade angle mainly adjust by the carbide shim, shim tilt angle different corresponding to the different. The most commonly used tilt angle is 1 °, dip MT standard knife pad for 1°.