The main differences between a ball screw and a ball spline are:
Function: A ball screw converts rotary motion into linear motion, typically used in applications requiring precise linear positioning. In contrast, a ball spline allows for both rotary and linear motion, enabling components to slide along the spline while also rotating.
Design: A ball screw consists of a screw shaft and a nut that contains ball bearings, facilitating smooth linear movement. A ball spline features a shaft with grooves and a spline nut, allowing for movement in multiple directions while maintaining alignment.
Applications: Ball screws are commonly used in machinery and CNC equipment for precise linear actuation. Ball splines are often found in robotics, automotive applications, and machinery that requires combined motion.
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