Introduction to CNC

I.     Course Prefix/Number: MFG 144

       Course Name: Introduction to CNC

       Credits: 4 (2 lecture; 4 lab)

II.    Prerequisite


III.   Course (Catalog) Description

Course provides hands-on training in G-code programming of computer numerical control (CNC) machines, including CNC mill (vertical machining center) and the CNC lathe (turning center), for purposes of program loading and operating CNC machines, using inspection equipment, and troubleshooting various production problems.  Programs are written, developed, simulated, run, and debugged on actual machine tools. Content includes reading, interpreting, and manually creating CNC programs.

IV.   Learning Objectives

This course will teach the basic understanding of a CNC control as well as the programming and hands-on experience on a machine tool with a CNC controller. Numerical control is an industrial technique that utilizes automatic controls to reproduce/replace the human functions/manipulations of various devices. This concept and technology covers many areas of the manufacturing process. It is the objective of this course to provide the student with the basic competencies needed to function in this type of industrial environment. It is not the purpose of this course to teach a specific Numerical Control device, but rather, to develop the student’s ability to adapt to any type of device that uses CNC as a control. Numerical Control is a precise process that has formats and rules of order to follow. It is the mastering of this process and the techniques that are common to all CNC systems, that is the focus of this course.

Upon Completion the student should be able to:
  • Write a "G" code program to control a CNC turning center to produce a part that matches the spec sheet and is within the tolerance level specified.
  • Write a "G" code program to control a CNC milling center to produce a part that matches the spec sheet and is within the tolerance level specified.
  • Up and down load programs to a CNC machining center.
  • Understand the safety concerns of operating a CNC machining center.

V.    Academic Integrity and Student Conduct

Students and employees at Oakton Community College are required to demonstrate academic integrity and follow Oakton's Code of Academic Conduct. This code prohibits:

• cheating,
• plagiarism (turning in work not written by you, or lacking proper citation),
• falsification and fabrication (lying or distorting the truth),
• helping others to cheat,
• unauthorized changes on official documents,
• pretending to be someone else or having someone else pretend to be you,
• making or accepting bribes, special favors, or threats, and
• any other behavior that violates academic integrity.

There are serious consequences to violations of the academic integrity policy. Oakton's policies and procedures provide students a fair hearing if a complaint is made against you. If you are found to have violated the policy, the minimum penalty is failure on the assignment and, a disciplinary record will be established and kept on file in the office of the Vice President for Student Affairs for a period of 3 years.

Please review the Code of Academic Conduct and the Code of Student Conduct, both located online at

VI.   Sequence of Topics

Session Description
  1. Introduction to NC & CNC
  2. History on NC and CNC
    1. Control Systems, Loop Systems
    2. Lab Milling Center
  3. Cartesian Coordinate
  4. Linear Interpolation
    1. Lab Project 1
  5. Methods of Setting up Tools in CNC Machines
  6. 2 Axis Programming
    1. Lab Project 2
  7. Downloading "G" code Programs from PC
  8. Midterm
  9. Circular Interpolation
    1. Lab project 3
  10. Open Lab
  11. Canned Cycles on Lathe
    1. Lab Project 4
  12. Canned Cycles on Mill
  13. Open Lab
  14. Review for Final Exam
  15. Final Exam

VII.  Methods of Instruction

Lecture, demonstration on Lab Machine Tools.
Course may be taught as face-to-face, hybrid or online course.

VIII. Course Practices Required

Will be determined by instructor
    Attendance required for success.
  • Completion of midterm and final exam.
  • Completion of 2 milling & 2 Turning Projects.

IX.   Instructional Materials

Note: Current textbook information for each course and section is available on Oakton's Schedule of Classes.

Textbook: The CNC Workbook
An Introduction to Computer Numerical Control.

X.    Methods of Evaluating Student Progress

Instruction will be in a lecture/lab format with time in class to work on projects and homework assignments. Course may be taught as face-to-face, media-based, hybrid or online course any late submissions will incur a 10% late fee.
A 90%
B 80%
C 70%
D 60%
F Below 60%

Attendance 10%

XI.   Other Course Information

If you have a documented learning, psychological, or physical disability you may be entitled to reasonable academic accommodations or services. To request accommodations or services, contact the Access and Disability Resource Center at the Des Plaines or Skokie campus. All students are expected to fulfill essential course requirements. The College will not waive any essential skill or requirement of a course or degree program.

Oakton Community College is committed to maintaining a campus environment emphasizing the dignity and worth of all members of the community, and complies with all federal and state Title IX requirements.

Resources and support for
  • pregnancy-related and parenting accommodations; and
  • victims of sexual misconduct
can be found at

Resources and support for LGBTQ+ students can be found at

Electronic video and/or audio recording is not permitted during class unless the student obtains written permission from the instructor. In cases where recordings are allowed, such content is restricted to personal use only. Any distribution of such recordings is strictly prohibited. Personal use is defined as use by an individual student for the purpose of studying or completing course assignments.

For students who have been approved for audio and/or video recording of lectures and other classroom activities as a reasonable accommodation by Oakton’s Access Disabilities Resource Center (ADRC), applicable federal law requires instructors to permit those recordings. Such recordings are also limited to personal use. Any distribution of such recordings is strictly prohibited.

Violation of this policy will result in disciplinary action through the Code of Student Conduct.