1. Inspects and tests finished grinding wheels for adherence to specifications: Inserts spindle in wheel, and mounts spindle on tripod. 2. Spins wheel and examines it for defects, such as heavy spots, uneven faces, and cracks. 3. Measures diameter and width of wheel, using calipers and tape measure. 4. Mounts …
1. Performs any combination of following tasks in motion picture or television studio or set location: Moves control levers and wheels to guide cranes, booms, and dollies that move cameras and other equipment. 2. Sews canvas and other materials to make and repair tents, tarps, scrims, and backings, using sewing …
1. Assembles gripping units that hold bobbins in wooden shuttles and inserts assembled units in shuttles: Removes burrs from edges of slots inside shuttles, using small knife. 2. Fastens T-shaped shim to bobbin holder with leather straps and fits grip assembly into slots in shuttle chamber. 3. Inserts tapered rod …
1. Operates panelboard to control machinery and equipment, such as conveyor belts, vibrating feeders, rod and ball mills, centrifugal separators, distributors, magnetic separators, and pumps, to grind ore and scrap metal and to separate iron particles from gangue: Sets and adjusts automatic controls on panel to regulate feed flow of …
1. Tends ball mill that grinds ore and classifier that separates coarse from fine particles: Turns pump valves and moves conveyor-control levers to feed soda ash, starch, lime, water, ore, and other materials into ball mill to make slurry. 2. Adds chemical reagent to slurry that causes fine particles to …
1. Tends grinding machines that grind internal and external surfaces of metal workpieces to specifications: Starts machine, places workpiece in holding fixture or hopper, and engages automatic feeding device. 2. Observes machine operation, and removes and inspects finished workpiece to verify conformance to specifications, using measuring instruments, such as preset …
1. Tends machine that removes bark from back of pearl button blanks, and levels back and face of blanks: Places blanks face-down on conveyor belt that feeds blanks between steel plate and abrasive wheel. 2. Inverts blanks by hand, and repeats operation to level faces. 3. May tend machine that …
1. Dresses and reshapes worn or damaged railroad switch points and frogs, using portable power grinder: Starts gasoline engine that activates grinding wheel. 2. Holds face or rim of wheel against steel rail parts to remove imperfections and impart appropriate shape, restoring rail for safe, smooth operation. 3. Performs running …
1. Grinds and chips workpiece to groove, bevel, round, or straighten edges or remove excess stock from metal as specified by drawings, job orders, or guidelines or to remove defects, such as shrink cracks and holes, using portable grinders, chipping hammers, pedestal grinders, and hand files: Positions workpiece manually or …
1. Grinds and chips weld splatter, high spots, burrs, slag, and rust from surface of fabricated metal structures and parts to improve appearance or prepare for painting, using portable or pedestal grinders, chipping hammers, and wire brushes: Positions workpiece on worktable manually or using jib or crane. 2. Inserts specified …
1. 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: Reads blueprint or machining instructions to determine fixtures and grinding wheel to use, machine settings, and gear dimensions and tolerances. 2. …
1. Controls steam cooker and grinding machines to reduce wood chips to felt: Installs and adjusts grinding plates, using rule and handtools. 2. Starts machines and conveyors and regulates steam pressure, cooking temperature, and spray or flow of water, wax, resin, and material. 3. Observes cooking, grinding, and felting of …
1. Tends lapping machine that grinds flat watch parts to specified thickness: Secures parts, shellacked onto surface of metal blocks, to holding fixture that rotates blocks on surface of revolving wheel. 2. Spreads oil and abrasive powder over wheel, and adjusts automatic timer to permit grinding for specified period. 3. …
1. Sets up and operates jig grinding machine to locate and precision-grind holes and contours in metal objects, such as tool, die, and machine parts, on custom basis, analyzing blueprints and specifications and selecting tooling according to knowledge of jig grinding procedures: Studies blueprint, layout on workpiece, or written or …
1. Sets up and operates thread-grinding machine to grind internal or external threads on metal objects, such as worm gears and leadscrews, on custom basis, analyzing specifications and selecting tooling according to knowledge of thread grinding procedures: Studies blueprint to visualize grinding to be done and plans sequence of operations. …
1. Sets up and operates combination external- and internal- grinding machine to grind external and internal cylindrical and tapered surface of rotating workpieces, such as tool, die, and machine parts, usually for limited runs, analyzing blueprints and specifications and selecting tooling according to knowledge of external and internal grinding procedures: …
1. Tends machine that grinds and blends coke according to specifications: Sets mill gauge to specified fineness of grind. 2. Starts conveyors and screening and grinding equipment. 3. Moves gate levers to regulate flow of raw coke into machine, and processed coke to mixer or packing-material hopper. 4. Turns valve …
1. Sets up and operates internal grinding machines to grind internal cylindrical and tapered surfaces of rotating metal workpieces, such as tool, die, and machine parts, usually for limited runs, analyzing blueprints and specifications and selecting tooling according to knowledge of internal grinding procedures: Studies blueprint or layout on workpiece …
1. Sets up and operates grinding machines to grind threads on metal objects, such as screws, bolts, and micrometer spindles, and to grind internal and external surfaces of metal workpieces to specifications, following tooling instructions, standard charts, blueprints, and job orders, applying knowledge of grinding procedures: Reads blueprint and job …
1. Sets up and operates one or more centerless grinding machines to grind external or internal cylindrical or tapered surfaces of metal workpieces to blueprint specifications, following tooling instructions and standard charts and applying knowledge of grinding procedures: Reads blueprint and job order for product specifications, such as dimensions, tolerances, …
1. Sets up and operates precision gear grinding machine with special indexing equipment to grind master and precision gears, usually on custom basis, analyzing specifications and selecting tooling according to knowledge of gear grinding procedures: Studies blueprints and machining instructions to determine grinding operations and to plan sequence of operations. …
1. Tends machine that pulverizes solid or semisolid materials used in manufacturing chemicals and related products: Installs screens of specified type and mesh in machine, using handtools, or starts auxiliary shakers that size ground particles. 2. Starts feed conveyors, or shovels or dumps materials into machine hopper. 3. Starts grinder …
1. Tends machine that grinds and hones blades and blade edges of articles, such as razors, knives, and garden tools: Loads blades in machine hopper or positions blades in holding fixture. 2. Starts machine that automatically feeds blades to abrasive wheel or belt. 3. Verifies dimensions of blades and keenness …
1. Sets up and operates external grinding machines to grind external cylindrical and tapered surfaces of rotating metal workpieces, such as tool, die, and machine parts, usually for limited runs, analyzing blueprints and specifications and selecting tooling according to knowledge of external grinding procedures: Studies blueprint or layout on workpiece …
