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Job Description:

  • 1) Sets up and operates one or more gear hobbing machines to machine splines or gear teeth on metal blanks according to specifications, machining instructions, and knowledge of gear hobbing procedures: Reads machining instructions or blueprints to determine machine settings, fixtures and hobs to use, and gear specifications, such as dimensions and tolerances.

  • 2) Clamps workpiece in fixture or presses it on arbor and mounts arbor between centers.

  • 3) Positions and secures specified hob on arbor in relation to workpiece, using wrenches.

  • 4) Moves levers or mounts gears in machine to set feed rates and rotation speeds of hob and workpiece following machining instructions.

  • 5) Turns handwheel to feed hob to workpiece or vice versa, and engages automatic feed.

  • 6) Turns valve handle and directs flow of coolant against hob and workpiece.

  • 7) Verifies conformance of hobbed gears to specifications, using micrometers, gear measuring wires, master gears, and involute checker.

  • 8) May compute data, such as gear dimensions and machine settings, applying knowledge of shop mathematics.

  • 9) May machine plastic or other nonmetallic materials.

  • 10) May be required to have experience with custom or production work, or with particular material, product, or size, type, or trade name of machine.




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End Of Job Description for: "GEAR HOBBER SET-UP OPERATOR"
DOT:   602.382-010

Job Number: 4463