By Lucas Rivers, TECH 4945 S23
Executive Summary
This project developed a robust, adjustable tapping head that reduces or eliminates damage caused when excessive torque is applied to taps. The tool’s output is adjustable from 20 to 300 inch-pounds, and can drive taps from size #0 to 1/2-inch. It can be driven by a variety of machine tools using a set of custom adapters.
The device was designed in CAD and rapid prototyped with 3D printing. The finalized design was machined from O1 tool steel and 17-4 PH stainless. Careful insert selection and machining techniques were required to complete the fabrication. CNC operations proved challenging, but were ultimately successful.
The prototype tapping head met or exceeded its initial requirements. It successfully met its torque specifications, and the adapters worked correctly.
