OBJECTIVES

After completing this unit, you should be able to:

• Identify and describe an address in CNC Code
• Identify and describe a word in CNC Code
• Identify and describe an argument in CNC Code
• Identify and describe a block in CNC Code
• Identify and describe a line number in CNC Code
• Identify and describe a canned cycle for CNC code
• Identify basic functions within a canned cycle
• Identify and describe two types of R-planes used in CNC codes
• Identify the purpose of G98 and G99 CNC codes
• Identify and describe G81 Drill Canned Cycle for CNC code
• Identify and describe G80 Cancel Canned Cycle
• Identify Z-depth for a center drill
• Calculate Z-axis (part thickness + radius of drill) for thru holes
• Write a three part CNC program using G81 canned cycle code
• Identify a deep hole
• Identify and describe G83 Multi-Peck Drill Canned Cycle
• Identify and describe the G83 variables of I, J, and K
• Calculate the values for I, J, and K
• Calculate Speed and Feed reductions for use with deep holes
• Identify and describe G84 Tapping Canned Cycle
• Locate notes for tapping speed reductions on CNC Speed and Feed chart
• Find the appropriate drill size for a hole
• Calculate the feed rate for G84