DEVICE FOR ZATYLOVANIYA hobs and dressing of abrasive wheels

摘要

The invention relates to mechanical engineering, in particular machine tool. Technically achievable result - improved accuracy zatylovaniya hobs. Device for zatylovaniya hobs comprises a pedestal on which are mounted a table longitudinally displaceable milling of controlled axes and table transverse displacement of the grinding wheel at a controlled coordinates cutter installed in the headstock having a rotatable along two controlled axes: rotation, carried out the cutter rotational actuator and rotation headstock around its axis, by rotating the headstock drive, and a grinding wheel having a rotatable, fitted ene spindle carrier headstock having a main drive - the rotation of the grinding wheel and the drive of the vertical displacement of the telescopic type. Edit abrasive grinding wheel for zatylovaniya hobs includes positioning the dressing tool in the form of a diamond needle, installed in the treated milling zone relative to the abrasive wheel with the further movement of the dresser against the rotating diamond wheel on a predetermined curved path in multiple passes, and moving the dressing tool is carried out along a trajectory identical trajectory zatyluemoy edge portion cutters. After completion of each pass is performed by applying the diamond needle by means of its rotation around the longitudinal axis z zatyluemoy cutter at an angle δ = 0,2 ÷ 1,5 ° and followed by its displacement with respect to the surface of the ruling wheel simultaneously parallel to the axis z-on value u = p · δ and z axis perpendicular to the - by the amount w = a · δ, wherein:; p = P _x · z _Zech / 360;; a = (k · z _3/360) · [(P _z + _zZech · P _x) / Pz]; where: P _z - axial pitch of the cutter;_Zech z - number of entries milling; k - value zatylovaniya; z ₃ - number of teeth of the cutter; P _z - step helical front surface.