Objectives

The objectives of the training course on “Introduction to CNC” are to

• to enable students learn the fundamentals of CNC system used on different types of machine tools and its versatility
• to prepare them for further study of machining systems and factors affecting the versatility of CNC
• to make them understand the requisite competency for operating the machining systems
• to give them an exposure to CNC programming

Course Contents

• Conventional machine tools versus CNC machine tools
• Requirements of CNC machine tools
• Pre-requisite for use of CNC on machine tools
• Introduction to essential components of CNC
  • data storage
  • drive motors, drives, motion, feedback
  • axes and their relationship to control
• History, trends and difference between N/C and CNC
• Common types and basic operations of CNC machines
  • machine parts and tooling [tool and job holding fixtures]
  • machine parameters viz. cutting speed, feed [rate and depth of cut ]
  • machine setting and accuracies
• Advantages and disadvantages of CNC
• Parameterisation of CNC
• Machine dependent software development
• Programming [including shop (part) programming ]
• Simulation
• Interfacing with machine tools
• Diagnostics
• Factors affecting the versatility of CNC [Variation in machine operation and product specification]

Methodology

Theoretical inputs through instructional sessions for 40 % of course time, Practical and hands-on work for 60 % of course time.
Note : The depth and scope of coverage, both theory and practical will vary proportionally  to the  total duration of the course.