Job Description:

• 1) Sets up and operates thread-milling machine to mill threads on external and internal surfaces of metal workpieces, applying knowledge of thread types and thread-milling methods: Studies blueprints, charts, drawings, and work orders to determine pitch and depth of thread, and type of tooling specified.

• 2) Lifts workpiece to fixture and bolts or clamps it in place, using handtools.

• 3) Selects and inserts cutting tool in machine spindle.

• 4) Sets and adjusts speed of cutting tool and feed rate of workpiece.

• 5) Positions cutting tool and workpiece to computed angles, and installs gears, cams, and stops to control multiple movements of workpiece and cutting tool.

• 6) Starts machine and inspects workpiece during and on completion of milling operation, using measuring instruments, such as thread gauge and thread measuring wires.

• 7) Removes milled workpiece from fixture.

• 8) May compute thread dimensions, using standard formulas.