| Job Title |
Screw-machine Set-up Operator, Swiss-type |
| Job Description |
Sets Up Swiss-type Automatic Screw-machines To Perform Series
Of Machining Operations, Such As Boring, Threading, And Facing
Metal Wire, Rod, Or Bar Stock To Specifications, To Produce
Small, Accurately Turned Parts For Clocks, Watches, And Other
Timing Devices: Studies Blueprint And Layout Sheet To Determine
Machining To Be Done, Dimensions Of Parts, And Permissible
Tolerances, And Plans Sequence Of Operations. Visualizes
Movements Of Machine Parts, Workpieces, And Tools In Each
Operation In Relation To Others And Decides On Station And
Timing Of Each Operation To Assure Efficient Use Of Tools And
Time. Selects Cutting Speeds, Feed Rates, Depth Of Cuts And
Cutting Tools To Be Used On Basis Of Experience And Knowledge Of
Metal Properties And Shop Mathematics, Or By Referring To
Tables, Charts, Or Instructions On Layout Sheet. Installs Stock
Feed Pushers, Collets, And Bushings, Using Wrenches. Inserts
Stock Into Stock Feed Mechanism And Sets Stock Stop To Control
Length Of Stock Fed. Installs Spindle Speed And Feed Change
Gears To Obtain Required Spindle Speeds And Tool Feeds. Installs
Cams That Control Movement Of Stock And Tools. Mounts Cutting
Tools In Toolholders And Mounts Them On Machine, Using Wrenches,
Verifying Their Position With Gauges And Other Measuring
Instruments. Cranks Machine Through Cycle, Stopping Machine And
Adjusting Tool Positions And Machine Controls To Allow For Such
Factors As Timing And Clearance Between Moving Parts. Starts
Machine, Observes Operation, And Verifies Conformance Of
First-run And Sample Workpieces To Specifications, Using Such
Instruments As Micrometers, Calipers, Limit Gauges, And Scales.
Replaces Worn Tools. May Operate Bench Grinder Or
Cutter-grinding Machine To Sharpen Tools. May Set Up And Operate
Machine To Machine First-run Workpiece Only. May Be Required To
Have Experience With Particular Product, Or Machine Of
Particular Size, Type, Or Trade Name.
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