CNC Milling Machine Spindle

thingiverse

This is my first post! I created a CNC Spindle model for educational purposes, demonstrating a working spindle with a moving draw-bar that engages and releases tools in CNC machining. Note that this design doesn't directly reflect actual spindle design. The bearings are loaded with approximately 40 "3/16" delrin balls, providing smooth performance. Inside the shaft is an R8 collet with a 1/4-20 bolt threaded into it, clamping tools in place under an upward force from a spring. These parts were printed at school using a high-end machine for optimal detail, which resulted in large STL files and a 23-hour print time. Some extra holes may need to be drilled and threaded if you're mounting a motor or other components. Please ask any questions as I don't want to overexplain!