| Job Title |
Grinder Set-up Operator, Thread Tool |
| Job Description |
Sets Up And Operates Thread-grinding Machine To Grind Internal
Or External Threads On Metal Objects, Such As Worm Gears And
Leadscrews, On Custom Basis, Analyzing Specifications And
Selecting Tooling According To Knowledge Of Thread Grinding
Procedures: Studies Blueprint To Visualize Grinding To Be Done
And Plans Sequence Of Operations. Selects And Computes Machine
Settings, Such As Positioning Angles, Rotation Speeds, Feed
Rates, And Gear Ratios, Using Knowledge Of Shop Mathematics.
Selects Grinding Wheel, Gears, And Cams, Using Knowledge Of
Thread Types, Metal Properties, And Abrasives, And Installs
Them, Using Wrenches. Positions And Secures Workpiece Between
Centers Or In Chuck Jaws. Sets Trip Stops Along Calibrated Rack
To Limit Workpiece Travel And Activate Wheel Withdrawal. Adjusts
Device To Dress Wheel To Computed Angles, And To Set For
Automatic Dressing During Operation. Moves Controls To Adjust,
Start, And Control Operation Of Machine. Verifies Conformance Of
Ground Workpieces To Specifications, Using Such Measuring
Devices As Thread Measuring Wires, Dial Indicator, Gauge Blocks,
And Optical Comparator (shadowgraph). May Be Required To Have
Experience With Particular Type Of Thread, Kind Of Computation,
Or Level Of Precision, Or With Machine Of Particular Type Or
Trade Name.
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