Hybrid programs blend both competency- and time-based strategies,
using a minimum and maximum range of hours for each major job
function and the successful demonstration of identified competencies.
using a minimum and maximum range of hours for each major job
function and the successful demonstration of identified competencies.
CNC Machinist
Anonymous
North Carolina (SAA)
Documents
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Personal and employer info redacted
Individual state requirements may vary. Please contact your local apprenticeship office to ensure this version is suitable to your state’s requirements.
Work Process Content
On the Job Training
Anonymous
132
Skills
Orientation to Machine Trades
3
Orientation to Machine Trades
3
- Identify and explain opportunities, functions, and requirements of the machining trade.
- Describe the duties and responsibilities of a machinist in your company.
- Define terminology related to the machining trade.
Industrial safety and environmental protection
8
Industrial safety and environmental protection
8
- Perform safety and housekeeping tasks
- Follow OSHA, EPA, and MSDS requirements
- Identify safety rules and regulations in the machine shop
- Carry out assignments while adhering to safety and OSHA guidelines
- Read and interpret MSDS sheets and handle hazardous materials accordingly
- Dispose of petroleum products according to EPA guidelines
- Keep duty station clean and safe for work
- Explain the causes of fires and methods of preventing and extinguishing
Mathematics
5
Mathematics
5
- Perform technical mathematics calculations
- Perform addition, subtraction, multiplication and division of whole numbers fractions and decimals with or without a calculator
- Convert to metric, decimal or fractional measurements
- Use formulas and arithmetic operations to solve for unknown
- Perform right triangle and Trig calculations for unknown
Measurement
4
Measurement
4
- Indentify, describe and use measuring tools
- Indentify, label, and care for measuring instruments such as calipers, height, gage, micrometer, gage blocks, protractor, precision square, gage pins, surface plates, and coordinate measuring machines
- Follow proper measuring procedures using precision measuring equipment
- Apply precision tools and instruments for surface plate work such as angle blocks, tool blocks, transfer gages, parallels and adjustable parallels
Engineering drawings and job planning
7
Engineering drawings and job planning
7
- Interpret and plan job processes from engineering drawings
- Interpret orthographic drawings
- Develop a job process plan and operation sheet for machining processes
- Demonstrate proper sketching techniques for orthographic representation
- Apply proper symbology and notation on orthographic sketches
- Interpret GD&T symbology
- Demonstrate the ability to interpret both 1st angle and 3rd angle projection
Benchwork
16
Benchwork
16
- Identify and use basic hand tools for benchwork
- Identify layout tools and equipment including scribe, center punch, surface plate, dividers, caliper, scale, layout dye
- Layout the location of holes and surfaces to a specified tolerance
- Apply proper scribing techniques
- Apply proper chiseling techniques
- Apply proper saawing techniques including hack saw, horizontal and vertical band saws, and cut-off saws
- Use charts to determine speeds and feeds for various materials and blades
- Choose, mount and weld saw blades
- Set up and perform scroll and contour sawing to a layout
- Apply proper polishing techniques for individual purposes and materials
- Apply proper riveting techniques
- Identify thread types and gauging techniques
- Apply proper tapping techniques using various taps and predrill sizes
- Demonstrate bending techniques calculating stretch length for various materials and thickness
- Use proper hand stamping techniques for letters and numbers
- Hand file radii and chamfers to size
Basic Shop Machinery
6
Basic Shop Machinery
6
- Identify basic power tools for benchwork
- Identify, label and determine safe practices in using various shop machinery including bench grinder, tool grinder, cut-off grinder, drill press
- Apply proper techniques in grinding various tools to proper geometry using the bench grinder and the tool grinder
- Demonstrate ability to dress various grinding wheels
- Demonstrate proper care of grinders and drill press
- Apply calculations for determining speeds and feeds for drilling
Metallurgy and Material Properties
9
Metallurgy and Material Properties
9
- Describe and test characteristics of materials
- Describe common materials and their principal properties relavent to machining tasks
- Explain the changes which heat-treatment imparts to materials
- Test materials hardness using Rockwell, Brinell, Vickers
- Apply calculations to determine tensile-strength, stress-strain, ductility, and yield strength
- Demonstrate knowledge of the steel numbering system
- Apply knowledge of material conditioning techniques such as Quenching, Annealing, Tempering, Flame Hardening, Through Hardening, Case Hardening
- Describe the difficulties associated with hardening
- Apply proper techniques for rust protection
Coordinate Drilling
6
Coordinate Drilling
6
- Perform various precision drilling operations on a coordinate drill
- Identify, label and apply proper safety and care coordinate drill machine
- Calculate feeds and speeds for various materials, drills and other tools
- Demonstrate the ability to perform various operations on a coordinate drill including drilling, counter sink, counter bore, reaming, tapping, boring, milling, and drilling hard material
- Perform proper setup of coordinate drill for various tasks
- Apply knowledge of tool selection and holding devices
Conventional Milling
17
Conventional Milling
17
- Identify milling processes and milling machines
- Identify internal and external milling processes
- Compare differences between horizontal and vertical mills
- Identify, label and apply proper safety and care for mills
- Set up and align machining tools, head, and work holding device
- Select proper tooling and appropriate speeds and feeds
- Operate a vertical mill
- Operate a horizontal mill
- Set up and perform precision milling operations to specified tolerance
- Identify and demonstrate different types of indexing
- Select proper tools for various materials and finishes
- Apply proper surface finish specified on prints and verify using scratch chart and surface measuring device
- Apply sizing and fitting techniques
- Use proper measuring procedures
- Perform operations such as counter sink, counter bore, tapping
- Clean, fill reservoir, and measure coolant for proper balance
- Dispose of used coolant properly
CNC Machining
24
CNC Machining
24
- Identify CNC processes and machines
- Identify CNC control panels
- Use CNC machines in an efficient manner
- Develop an understanding of incremental and absolute positioning
- Identify, label, and apply proper safety procedures for CNC turning centers
- Identify, label, and apply proper safety procedures for CNC milling centers
- Set up and align machining tools, and work holding device
- Select proper tooling and appropriate speeds and feeds
- Operate a CNC milling center
- Operate a CNC turning center
- Develop CNC programs using G and M code
- Identify and demonstrate various types of indexing
- Apply tool offsets
- Perform machine set-up
- Set up and perform precision machining operations to specified tolerance
- Select proper tools for various materials and finishes
- Apply proper surface finish specified on prints and verify using scratch chart and surface measuring device
- Apply sizing and fitting techniques
- Use proper measuring procedures
- Perform operations such as counter sink, counter bore, tapping
- Clean, fill reservoir, and measure coolant for proper balance
- Dispose of used coolant properly
- Develop programs using CAD/CAM software
- Use CAN cycles
Heat Treating
6
Heat Treating
6
- Identify methods and proper heat treating techniques and procedures
- Identify, label, and apply proper safety procedures for heat treating ovens
- Perform hardness testing
- Identify properties of various types of metal
- Develop understanding of hardening processes such as quenching, annealing, normalizing, tempering, flame hardening, case hardening, induction, carburizing, carbonnitriding, nitriding
- Identify numbering system for steel
Electric Discharge Machining
7
Electric Discharge Machining
7
- Identify EDM machines and practices
- Identify, label, and apply proper safety procedures for EDM machines
- Set up and align machining tools, and work holding device
- Demonstrate knowledge of electrode designs and principles
- Demonstrate knowledge of wire EDM practices
- Use software to generate programming for various parts
- Perform general machine maintenance
Surface Grinding
14
Surface Grinding
14
- Identify surface grinding machines and processes
- Identify, label, and apply proper safety procedures
- Set up and align work holding device
- Select proper speeds and feeds
- Select, dress and balance various grinding wheels
- Use proper measuring procedures
- Select proper wheel for various materials and finishes
- Set up and perform precision grinding operations to specified tolerance
- Grind various radii
- Grind angles
- Use sine bar for set up and measurement
- Set up and grind compound angles
- Grind various forms and shapes
- Perform general machine maintenance
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