Clamping module for machine tool and method of determining curvature of guide face of clamping module

A method of determining a curvature of a guide face of a clamping module, which determines a uniform radius of curvature of a first guide face of a clamping module

• that includes:
• a body having a mount hole that a pull stud enters;
• a plunger configured to clamp or unclamp the pull stud by sliding forward or backward radially from a center of the mount hole;
• a plunger pin protruding from a side of the plunger and configured to freely rotate;
• and a clamp a guide configured to move up and down inside the body and having a guide groove having the first guide face for moving forward the plunger to a clamping position by interfering with the plunger pin and a second guide face for moving backward the plunger to an unclamping position,
• the method comprising:
• constructing a cycloid curve according to a diameter of the plunger and a triangle having a required operation value, which is determined as a horizontal movement distance of the plunger to a vertical movement distance of the clamp plunger, as a hypotenuse;
• selecting an available section that is a curved section satisfying the required operation value, by moving the cycloid curve in a plane such that two end points of the hypotenuse of the triangle intersects the cycloid curve;
• and
• selecting a radius of a circle satisfying a movement distance similarity of 85% or more to the curve selected as the available section of circles all passing both end points of the hypotenuse and any one point on the curve of the available section, as the radius of curvature of the first guide face.