Operator Tool Machine:
Prepares and
operates variety of machine tools, such as radial drill press, lathes, milling machines, shapers, and grinders, to machine metal work pieces, such as patterns and machine, tool, or die parts, usually on custom basis.
Assesses specifications and determines...
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Operator Tool Machine:
Prepares and
operates variety of machine tools, such as radial drill press, lathes, milling machines, shapers, and grinders, to machine metal work pieces, such as patterns and machine, tool, or die parts, usually on custom basis.
Assesses specifications and determines tooling, applying knowledge of metal properties, machining, and shop mathematics.
Checks blueprint or layout on work piece to visualize machining required, and
figures sequence of operations. Selects method of holding work piece.
Lifts work piece manually or using hoist, and positions and secures it to holding device, such as machine table, chuck, centers, or fixture, using wrenches and aids, such as shims, parallel blocks, planter gauges, and clamps. Verifies work piece position, using instruments, such as surface gauges, height gauges, and dial indicator. Selects feed rate, cutting speed, depth of cut, and cutting tool (bar tool, rotary cutter, or abrasive wheel) for each operation, according to knowledge of metal properties, machining, and shop mathematics. Positions and secures tool in tool holder (chuck, collet, or toolpost). Moves controls to position tool and work piece in relation to each other, and to set feeds, speeds, and depth of cut. Starts machine, turns handwheel to feed tool in work piece or vice versa, and engages automatic feeding device. Turns valve handle to start flow of coolant against tool and work piece. Observes operation and regulates tool position and action. Verifies conformance of machined work piece to specifications, using instruments, such as micrometers, gauges, and gauge blocks. May measure, mark, and scribe work piece to lay out for machining. May devise ways of clamping work pieces and make special jigs and fixtures as needed. May work on nonmetallic materials. May operate bench grinder or cutter grinding machine to sharpen tools. (Source: eDOT Job Description)
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