| Job Title |
Ball-truing-machine Operator |
| Job Description |
Sets Up And Operates Battery Of Ball-truing Machines To Grind
Bowling Balls Spherically To Size And Smooth Them Preparatory To
Finishing And Polishing: Installs Conical Grinding Rings On
Opposing Spindles And Adjusts Clearances And Angle Of Cut, Using
Wrenches And Gauges. Places Rough Cast Ball On Holding Pad
Between Grinding Rings And Turns Valve To Start Cooling Water To
Flow Over Ball. Starts Machine And Moves Dial Pointer To Preset
Running Time Cycle On Each Quadrant Of Ball. Removes Ball From
Holding Pad And Gauges It With Ring Or Calipers And Rule To
Ensure Specified Size Tolerances. May Mark Imperfections On Ball
To Be Drilled And Plugged, Using Crayon.
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