Numerical Tool and Process Control Programmers

Develop programs to control machining or processing of parts by automatic machine tools, equipment, or systems.

Job Task

• Draws machine tool paths on pattern film, using colored markers and following guidelines for tool speed and efficiency.
• Revises numerical control machine tape programs to eliminate instruction errors and omissions.
• Enters computer commands to store or retrieve parts patterns, graphic displays, or programs to transfer data to other media.
• Aligns and secures pattern film on reference table of optical programmer and observes enlarger scope view of printed circuit board.
• Moves reference table to align pattern film over circuit board holes with reference marks on enlarger scope.
• Depresses pedal or button of programmer to enter coordinates of each hole location into program memory.
• Loads and unloads disks or tapes and observes operation of machine on trial run to test taped or programmed instructions.
• Reviews shop orders to determine job specifications and requirements.
• Sorts shop orders into groups to maximize materials utilization and minimize machine setup.
• Prepares geometric layout from graphic displays, using computer-assisted drafting software or drafting instruments and graph paper.
• Writes instruction sheets, cutter lists, and machine instructions programs to guide setup and encode numerical control tape.
• Analyzes drawings, specifications, printed circuit board pattern film, and design data to calculate dimensions, tool selection, machine speeds, and feed rates.
• Determines reference points, machine cutting paths, or hole locations and computes angular and linear dimensions, radii, and curvatures.
• Compares encoded tape or computer printout with original program sheet to verify accuracy of instructions.

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