Tapered Surfaces

Tapered surfaces are precision-machined conical interfaces on collet bodies and gripper jaws that create self-centering, high-friction clamping forces when mated with corresponding tapers. These surfaces convert axial motion into radial clamping force through wedge action, ensuring concentric gripping of cylindrical workpieces with minimal runout. The taper angle (typically 5-15 degrees) determines the mechanical advantage and clamping force distribution.

The tapered surface operates on the wedge principle: when axial force is applied (via drawbar or actuator), the mating tapers generate radial force through geometric interference. This creates uniform pressure distribution around the workpiece circumference, with the taper angle providing mechanical advantage (Force_clamp = Force_axial / tan(θ)). The self-locking effect maintains clamping without continuous external force.