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"ELECTRICAL-DISCHARGE-MACHINE SET-UP OPERATOR"
Job Description and Jobs

Job Description:

  • 1) Sets up and operates one or more electrical-discharge machines to shape metal workpieces to specifications, following standard charts and manuals, and applying knowledge of electrical-discharge machining processes and methods, electric currents and circuitry, metal properties, and shop mathematics: Examines blueprint of product and plans operations.

  • 2) Positions and secures workpiece on machine table with clamps, vise, or fixture.

  • 3) Positions and secures electrode in holder on surface plate, verifying concentricity, alignment, and depth, using measuring instruments, such as calipers and dial indicators.

  • 4) Mounts electrode and holder on machine spindle, using vernier dials on machine to verify alignment of electrode and workpiece.

  • 5) Positions gauge blocks, dial indicator, and spindle stop on machine so that descending electrode will stop at specified depth when indicator feeler point touches gauge blocks.

  • 6) Turns valve to adjust flow of dielectric coolant over electrode and workpiece or to immerse them in circulating bath.

  • 7) Turns controls to adjust machine setting, such as voltage, current, frequency, and electrode feed rate, according to information on charts or knowledge of electrical discharge machining procedures.

  • 8) Starts machine and observes beginning of operation.

  • 9) May move controls to rotate electrode or workpiece.

  • 10) May inspect completed workpiece visually and with templates and other measuring instruments.

  • 11) May compute settings from specifications and knowledge of machine capacities.

  • 12) May give TOOL MAKER specifications, such as allowances between blueprint dimensions and dimensions of electrode to be made.

  • 13) Important variables may be indicated by trade names of machine used.

 

 

 


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End Of Job Description for: "ELECTRICAL-DISCHARGE-MACHINE SET-UP OPERATOR"
DOT:   609.380-010

Job Number: 3412