Thread-milling-machine Set-up Operator
Overall rating: (N/A)
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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. Lfits
workpiece to fixture and bolts or clamps it in place, using
handtools. Selects and inserts cutting tool in machine spindle.
Sets and adjusts speed of cutting tool and feed rate of
workpiece.
Positions cutting tool and wrokpiece to computed
angles, and installs gears, cams, and stops to control multiple
movements of workpiece and cutting tool. Starts machine and
inspects workpiece during and on completion of milling
operation, using measuring instruments, such as thread gauge and
thread measuring wires. Removes milled workpiece from fixture.
May compute thread dimensions, using stadnard formulas.
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Thread-Milling-Machine Set-Up Operator
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