Mechanisms — twist drill

Recent Blogs

Portable Drill diagram
Portable Drill Power Train: Declared Ratio, Torque and Speed
How a Portable Drill works — chuck, motor, gearbox, torque clutch. Real RPM, feed, and torque numbers from construction, MRO, and fabrication shops.
Drilling Machine diagram
Drilling Machine: Spindle Rotation, Quill Feed and Cutting-Speed Calculator
Explore a drill press with spindle rotation and adjustable quill position. Calculate target RPM, actual cutting speed and tool-tip position below the work.