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Determine safe operations for computer numeric controlled equipment
Assessment Strategies
Demonstration
Criteria
Demonstrate proper lockout/tagout procedures for CNC equipment before maintenance or troubleshooting
Identify and explain required personal protective equipment (PPE) for specific CNC operations
Execute proper emergency stop procedures in simulated hazardous situations
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Classify CNC equipment and machines according to their function
Assessment Strategies
Oral, Written and/or Skill Assessment
Criteria
Differentiate between 3-axis, 4-axis, and 5-axis CNC machines and their applications
Compare and contrast the capabilities of CNC mills, lathes, and routers
Categorize CNC machines based on their control systems (open-loop vs. closed-loop)
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Explore CNC tools
Assessment Strategies
Oral, Written and/or Skill Assessment
Criteria
Identify appropriate cutting tools for specific CNC applications based on material and desired finish
Evaluate tool wear patterns and determine when replacement is necessary
Select optimal tool holders based on machine specifications and cutting requirements
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Determine CNC machine set-up
Assessment Strategies
Oral, Written and/or Skill Assessment
Criteria
Establish proper machine home positions and work coordinate systems
Calibrate tool offsets using appropriate measurement devices
Configure machine parameters according to manufacturer specifications for different materials
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Identify workholding devices
Assessment Strategies
Oral, Written and/or Skill Assessment
Criteria
Select appropriate fixtures and clamps based on workpiece geometry and cutting forces
Demonstrate proper installation and alignment of vises, chucks, and custom fixturing
Design workholding solutions that minimize vibration while maintaining adequate access for tool paths
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Compute cartesian coordinates
Assessment Strategies
Oral, Written and/or Skill Assessment
Criteria
Convert engineering drawings into X, Y, and Z coordinate points for CNC programming
Calculate coordinate transformations for different work offset positions
Troubleshoot coordinate errors in existing programs
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Compare CNC controls
Assessment Strategies
Oral, Written and/or Skill Assessment
Criteria
Distinguish between the user interfaces of major CNC control manufacturers (Fanuc, Haas, Siemens)
Identify which control features are best suited for specific manufacturing applications
Demonstrate the ability to navigate and operate at least two different CNC control systems
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Write programs including G-codes and M-codes
Assessment Strategies
Oral, Written or Graphic Assessment
Criteria
Create complete CNC programs with proper structure including setup and tool change commands
Implement canned cycles to increase programming efficiency
Modify existing G-code programs to optimize operation
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Simulate tool paths
Assessment Strategies
Demonstration
Criteria
Verify tool paths using CNC simulation software to identify potential collisions
Analyze simulated cutting operations to optimize cycle time
Generate performance reports based on simulation data
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Relate feeds and speeds to CNC operations and machines
Assessment Strategies
Oral, Written and/or Skill Assessment
Criteria
Calculate appropriate cutting speeds and feed rates based on material properties and tool specifications
Adjust feeds and speeds to achieve specified surface finishes
Diagnose to resolve issues related to improper feed and speed settings