MachinistFull Time @Stefanini posted 6 months ago
GEAR HOBBER SET-UP/OPERATOR
- 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.
- Clamps work piece in fixture or on arbor and mounts arbor between centers.
- Positions and secures specified hob on arbor in relation to work piece, using wrenches.
- Moves levers or mounts gears in machine to set feed rates and rotation speeds of hob and work piece following machining instructions.
- Turns hand wheel to feed hob to work piece or vice versa, and engages automatic feed.
- Turns valve handle and directs flow of coolant against hob and work piece. Verifies conformance of hobbed gears to specifications, using micrometers, gear measuring wires, master gears, and involute checker.
- Compute and program data, such as gear dimensions and machine settings, applying knowledge of shop mathematics.
- Sets up and operates gear inspection equipment to measure curvature of gear tooth, distance between teeth, concentricity of gear, profile and surface dimensions, of production and prototype gears, utilizing knowledge of gear inspection techniques and procedures.
- Mounts master gears on testing machine and starts machine to calibrate machine instruments.
- Mounts and secures gear on spindle or arbor of machine, sets instrument stylus on gears.
- Starts machine and reads instrument results to determine dimensions of gear, and compares readings to specifications.
- Measures profile and surface dimensions of gear.
- Correct gear machine setup to eliminate defects.
Intermediate reading, writing, and arithmetic skills required. This is normally acquired through a high school diploma or equivalent, or a 2 degree program.
Computer literate with the ability to learn, and work statistical and manufacturing software applications. Duties require verbal and written communication skills.
Microsoft Office Professional, Word, Excel, statistical and manufacturer software a plus
Important Qualities for Successful Job Performance: (Y for Yes, N for No)
Problem Solving: Y Analytical Ability: Y Communication Skills: Y
Bilingual: N Interpersonal Skills: Y Dexterity: Y
Provide on-the-job training to employee on software application and use.
Physical Demands (By percentage of activity)
Standing: 90% Walking: 50% Sitting: 5% Balancing: 0%
Stooping: 5% Kneeling: 0% Crouching: 5% Crawling: 0%
Climbing: 0% Hearing: 40% Talking 25% Tasting or Smelling: 0%
Reaching/working overhead: 0% Keyboard use/repetitive Hand Motion: 1%
Pushing: 10% Weight: 50 lbs.
Pulling: 10% Weight: 50 lbs.
Lifting: 80% Weight: 50 lbs.
Carrying: 10% Weight: 50 lbs.
Work Environment (Percent of the on-the-job time exposed to each condition)
Vibration: 0% Radiation: 0% Explosives: 0%
Electricity: 0% Non-weather heat: 0% Non-Weather cold: 0%
Outdoor Weather: 0% Height: 0% Toxic/caustic chemicals: 0%
Moving mechanical parts: 0% Fumes or airborne particles: 90%
Non-weather wet, humid conditions: 0%