Machinist, Maintenance (23550): The Machinist, Maintenance produces replacement parts and new parts in making repairs of metal parts of mechanical equipment. Work involves most of the following: interpreting written instructions and specifications, planning and laying out of work, using a variety of machinist's hand tools and precision measuring instruments, setting up and operating standard machine tools. This incumbent is responsible for the shaping of metal parts to close tolerances, making standard shop computations relating to dimensions of work, tooling, feeds, and speeds of machining; knowledge of the working properties of the common metals, selecting standard materials, parts, and equipment required for this work; and fitting and assembling parts into mechanical equipment. In general, the machinist's work normally requires a rounded training in machine-shop practice, usually acquired through a formal apprenticeship or equivalent training and experience.
Typically works from blueprints, technical data and/or engineering specifications, 3-D models, incorporates Aircraft service changes and other technical directives.
Repairs, modifies, fabricates and fits aircraft metal structures. Performs precision handwork to fit, finish machined items.
Utilizes universal machines to perform the work required to accomplish technical directives.
Sets up and operates special and universal/ CNC machines and their accessories to perform complex machining tasks to aircraft components and their structures.
Programs and models utilizing CAD/CAM software.
Selects appropriate tool paths, cutting tools, installs and aligns the tool to the workpiece to accommodate precision specifications as required by blueprint and/or technical data.
Machines aircraft structures and components to tolerances of .0005” or less.
Uses conventional measuring tools such as micrometers, precision indicators, depth gauges, height gauges, inside micrometers, bore gauges, and others required by the job.
Uses available equipment to manufacture bushings, tubs, straps, angles, and radii in accordance with a blueprint and/ or technical directive specifications.
Typically works from blueprints, technical data, IPB, MIMS, SRM manuals, written instructions, and verbal directives.
Performs bench and floor assembly of complex components consisting of machine parts that require precision alignment.
Frequently lays out work to drill, ream, and bore holes to repair modify and rework aircraft structural parts to restore, condition, or incorporate an aircraft change.
Removes and installs helicoils, keenserts, rosans, and other fastener devices.
Typical work is “one-off” single job parts however there will be occasions that require full production runs.
Uses shop mathematics to make all calculations as needed.
Uses universal machines such as engine lathes, turret and vertical turret lathes, shapers, general purpose milling machines, CNC vertical mills, CNC lathes, Wire EDM, to include 5-Axis tables capable of being set up to perform many different types of work and grinders capable of both external and internal grinding.
Supervised by a QAR/ Machinist crew leader for new procedures or special problems.
Works independently with little or no supervision.
Responsible for the quality and accuracy of his/her own work and for the work of other employees of the same trade who may be assigned by the supervision to assist the Machinist.
Complies with accepted safety practices and procedures.
May be required to use heavy exertion for short periods of time.
Work requires standing, kneeling, crouching, stooping and/ or working in strained and awkward positions.
Work requires hand and eye coordination.
Required to work closely with and be supervised by Active Duty military personnel.
Technical Dire ctive compliance and modific ations.
Perform general housekeeping and organization of workstation(s), shop(s), maintenance facility to provide a clean, safe, and FOD free environment.
Perform shift work and/or overtime as required.
Other duties as assigned.
Preferred Personnel Qualifications:
Ten or more years Manual Machinist experience.
Seven or more years Computer Numerical Control (CNC) experience.
Minimum (Basic) Personnel Qualifications:
Navy Machinery Repairman (MR) “A” school or civilian equivalent.
Must be able to read and work from blueprints, 3-D models, technical data, manufacture specifications, sketches, sample parts, templates, jigs, and fixtures, written and verbal instructions.
Must have broad trade knowledge of mechanical principles, standard shop practices and special techniques in the machinist trade.
Must possess the ability to set up and operate several types of machinery and and be capable of machining aircraft structures and component to tolerances of .0005” or less.
Must have a good working knowledge on aircraft materials including tool steels, titanium, aluminum, brass, copper, and non-metals.
Incumbent is required to be aware of machining effect on heat treatment of materials and, conversely the effect of heat treatment on materials.
Must be able to designate the type, size and peculiar characteristics of special tool required to do complex tasks in the trade.
Knowledge of Mastercam or similar programs and Fanuc G-code required.
Must be able to operate all machines ensuring safety of user and safety of all within work area.
Must comply with accepted safety practices and procedures.
Full physical capability is required for this position and employee may be required to pass a physical exam to ensure they are physically able to perform duties without hazard to themselves or others.
Must be able to lift regularly up to 35 pounds.
Occasionally may be required to lift weights over 45 pounds; however dollies, hoists, hand trucks, etc. are available.
Must be familiar with the removal and installation of helicoils, keenserts, rosans, and other fastener devices.
Employee must be able to work long hours in excess of eight hours per day and forty hours per week.
Must be able to work 1st or 2nd shift or as required.
All Contractors are required to have a Common Access Card (CAC) and shall be required to pass the equivalent of a trustworthy National Agency Check plus Written Inquiries with Credit Check (NACI), IAW DTM-08-003 “Next Generation Common Access Card (CAC) Implementation Guidance”, or latest guidance, prior to being allowed to work under task order PWS.