- Industry: Government; Labor
- Number of terms: 77176
- Number of blossaries: 0
- Company Profile:
A professional who 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. Respnsibilities include:
* Reads machining instructions or blueprints to determine machine settings, fixtures and hobs to use, and gear specifications, such as dimensions and tolerances.
* Clamps workpiece in fixture or presses it on arbor and mounts arbor between centers.
* Positions and secures specified hob on arbor in relation to workpiece, using wrenches.
* Moves levers or mounts gears in machine to set feed rates and rotation speeds of hob and workpiece following machining instructions.
* Turns handwheel to feed hob to workpiece or vice versa, and engages automatic feed.
* Turns valve handle and directs flow of coolant against hob and workpiece.
* Verifies conformance of hobbed gears to specifications, using micrometers, gear measuring wires, master gears, and involute checker. May compute data, such as gear dimensions and machine settings, applying knowledge of shop mathematics.
* May machine plastic or other nonmetallic materials.
* May be required to have experience with custom or production work, or with particular material, product, or size, type, or trade name of machine.
Industry:Professional careers
A professional who 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. Respnsibilities include:
* Reads machining instructions or blueprints to determine machine settings, fixtures and hobs to use, and gear specifications, such as dimensions and tolerances.
* Clamps workpiece in fixture or presses it on arbor and mounts arbor between centers.
* Positions and secures specified hob on arbor in relation to workpiece, using wrenches.
* Moves levers or mounts gears in machine to set feed rates and rotation speeds of hob and workpiece following machining instructions.
* Turns handwheel to feed hob to workpiece or vice versa, and engages automatic feed.
* Turns valve handle and directs flow of coolant against hob and workpiece.
* Verifies conformance of hobbed gears to specifications, using micrometers, gear measuring wires, master gears, and involute checker. May compute data, such as gear dimensions and machine settings, applying knowledge of shop mathematics.
* May machine plastic or other nonmetallic materials.
* May be required to have experience with custom or production work, or with particular material, product, or size, type, or trade name of machine.
Industry:Professional careers
A professional who sets up and operates one or more spiral-bevel gear generating machines to cut and shape spiral or hypoid teeth on metal bevel-gear blanks according to specifications, machining instructions, and knowledge of gear types and generating procedures. Respnsibilities include:
* Reads blueprint or machining instructions to determine gear type, dimensions, and number of teeth, and machine settings and cutter to be used.
* Clamps workpiece in fixture or presses it on arbor, and positions it to cutting angle.
* Positions and secures cutter on spindle in relation to workpiece, using wrenches and turning handwheels.
* Moves levers to set cutter and workpiece rotation speeds in relation to each other.
* Mounts gears, cams, or templates in machine to control indexing of workpiece and rolling motion of cutter.
* Starts machine, turns valve handle, and directs flow of coolant against cutter and workpiece.
* Verifies conformance of machined gear to specifications, using micrometers, master gears, and special gear inspection equipment.
* May compute data, such as gear dimensions and machine settings, applying knowledge of shop mathematics.
* May machine plastics or other nonmetallic materials.
* May be required to have experience with custom or production work, or with particular material, product, or size, type, or trade name of machine.
Industry:Professional careers
A professional who sets up and operates one or more straight-tooth bevel-gear generating machines to cut and shape straight teeth on metal bevel-gear blanks, according to machining instructions and knowledge of gear generating procedures. Respnsibilities include:
* Reads blueprint or machining instructions to determine machine settings, fixtures and cutters to use, and gear type, dimensions, tolerances, and number of teeth to be generated.
* Mounts workpiece on arbor and positions it to cutting angle.
* Positions and clamps two cutters in toolheads, and positions cutter cradle to specified angle, using wrenches.
* Mounts gears and cams in machine to control rotation speed and indexing of workpiece, cutting speed, and rolling motion of cutter cradle.
* Starts machine, turns valve handle, and directs flow of coolant against reciprocating cutters and workpiece.
* Verifies conformance of machined gear to specifications, using micrometers, master gears, and special gear inspection equipment.
* May compute such data as gear dimensions and machine settings, applying knowledge of shop mathematics.
* May machine plastics or other nonmetallic materials.
* May be required to have experience with custom or production work, or with particular material, product, or size, type, or trade name of machine.
Industry:Professional careers
A professional who sets up and operates one or more gear milling machines to machine splines or gear teeth on metal blanks, according to machining instructions and knowledge of gear milling procedures. Respnsibilities include:
* Reads blueprints or machining instructions to determine machine settings, fixtures and milling tools to use, and gear specifications, such as dimensions and tolerances.
* Clamps workpiece in fixture or presses it onto arbor.
* Positions and secures cutter on spindle in relation to workpiece, using wrenches.
* Moves levers or mounts gears in machine to set feed rates and rotation speeds of cutter and workpiece in relation to each other.
* Starts machine, turns valve handle, and directs flow of coolant against cutter and workpiece.
* Verifies conformance of machined gears to specifications, using micrometers, gear measuring wires, and special gear inspection equipment.
* May compute data, such as gear dimensions and machine settings, applying knowledge of shop mathematics.
* May machine plastics or other nonmetallic materials.
* May be required to have experience with custom or production work, or with particular material, product, or size, type, or trade name of machine.
Industry:Professional careers
A professional who sets up and operates one or more gear milling machines to machine splines or gear teeth on metal blanks, according to machining instructions and knowledge of gear milling procedures. Respnsibilities include:
* Reads blueprints or machining instructions to determine machine settings, fixtures and milling tools to use, and gear specifications, such as dimensions and tolerances.
* Clamps workpiece in fixture or presses it onto arbor.
* Positions and secures cutter on spindle in relation to workpiece, using wrenches.
* Moves levers or mounts gears in machine to set feed rates and rotation speeds of cutter and workpiece in relation to each other.
* Starts machine, turns valve handle, and directs flow of coolant against cutter and workpiece.
* Verifies conformance of machined gears to specifications, using micrometers, gear measuring wires, and special gear inspection equipment.
* May compute data, such as gear dimensions and machine settings, applying knowledge of shop mathematics.
* May machine plastics or other nonmetallic materials.
* May be required to have experience with custom or production work, or with particular material, product, or size, type, or trade name of machine.
Industry:Professional careers
A professional who sets up and operates one or more gear shaping machines to machine splines or gear teeth in metal blanks, according to machining instructions and knowledge of gear types and gear shaping procedures. Respnsibilities include:
* Reads machining instructions or blueprints to determine machine settings, holding fixtures and cutters to use, and gear type, dimensions, tolerances, and number of teeth to be cut and shaped.
* Clamps workpiece in fixture or presses it on arbor.
* Positions and secures specified cutter on spindle in relation to workpiece and sets length of stroke, using wrenches.
* Moves levers or mounts gears in machine to set feed rates, cutting speeds, and rotation speeds of cutter and workpiece, according to machining instructions.
* Turns valve handle and directs flow of coolant against cutter and workpiece.
* Verifies conformance of machined gears to specifications, using micrometers, master gears, gear measuring wires, and special gear inspection equipment.
* May mount guides to control twisting motion of spindle for cutting helical gears.
* May compute data, such as gear dimensions and machine settings, applying knowledge of shop mathematics.
* May machine plastics or other nonmetallic materials.
* May be required to have experience with custom or production work or with particular material, product, or size, type, or trade name of machine.
Industry:Professional careers
A professional who sets up and operates one or more gear-shaving machines that utilize gashed, gear-shaped cutting tools to shape and smooth gear teeth or to correct distortions remaining from roughing (gear-cutting) operation, following machining instructions and knowledge of gear-shaving methods. Respnsibilities include:
* Reads blueprints or machining instructions to determine machine settings, fixtures and cutterheads to use, and gear dimensions and tolerances.
* Presses gear on arbor and mounts it between centers, using handtools.
* Mounts cutter on cutterhead.
* Moves controls to set feed rates, cutting speeds, reciprocating action, and angles of cutter and gear.
* Turns handwheel to feed gear to cutter.
* Verifies conformance to specifications, using micrometers, measuring wires, and involute checker. May compute gear dimensions and machine settings, applying knowledge of shop mathematics and gear formulas.
* May work on nonmetallic gears.
* May be required to have experience with custom or production work, or with particular material, kind of gear, or machine of particular type or trade name.
Industry:Professional careers
A professional who sets up and operates one or more gear grinding machines to grind surfaces of splines or gear teeth, following machining instructions and applying knowledge of gear grinding techniques. Respnsibilities include:
* Reads blueprint or machining instructions to determine fixtures and grinding wheel to use, machine settings, and gear dimensions and tolerances.
* Clamps workpiece in chuck or fixture, or presses it on arbor and mounts between centers.
* Positions and secures wheel on arbor in relation to workpiece, using wrenches.
* Moves levers or mounts gears in machine to set feed rates and rotation speeds of wheel and workpiece in relation to each other.
* Turns handwheels to feed wheel to workpiece or vice versa, and to index workpiece, and engages automatic feeding and indexing device.
* Turns valve and directs flow of coolant against wheel and workpiece.
* Sets up and operates wheel dressing device to dress and true abrasive wheel.
* Verifies conformance to specifications, using micrometers, gear measuring wires, and involute checker. May compute data, such as gear dimensions and machine settings, applying knowledge of shop mathematics.
* May work on nonmetallic materials.
* May be required to have experience with custom or production work or with particular material, gear type, or size, type, or trade name of machine.
Industry:Professional careers
A professional who sets up and operates gear-lapping machine to lap gears according to specifications, machining instructions, standard charts, and knowledge of gear lapping procedures. Respnsibilities include:
* Reads blueprint or instructions to determine gear dimensions, tolerances, and number of gears to be lapped, and machining instructions for lapping speeds and pressures, work-holding fixtures, and spindle angles to be used.
* Positions and secures pairs or trains of gears on spindles, using fixture and wrenches.
* Moves controls to set spindle angles, lapping speeds, tool pressure, and length of cycle.
* Brushes or sprays lapping compound on gears.
* Starts machine, examines gear contact area, and moves handwheels to adjust action of gears.
* Inspects lapped gears for conformance to specifications, using knowledge of gear design and surface finishing.
* May inspect finish and mechanical action of gears with gear inspection equipment.
* May be required to have experience with particular type of gear or machine.
* May lap gears against each other metal-to-metal without lapping compound and be designated Gear Burnisher.
Industry:Professional careers
