Macomb MTEC is now offering a CNC operation class that is scheduled to begin on Monday, March 11, 2013,  and they are in need of students to fill it. This class is funded through the Macomb Community College’s DOL defense grant. Students would need to contact the college to get tested and eligible by this Friday, March 8th.  In order to obtain more information, prospective students can call 586-498-4100 and mention that you are interested in the CNC Program.  See below for more information!

CNC Basic Operator

Course Objective:

This seven week program prepares students with the knowledge and skills to obtain an operator level position in a CNC milling and turning environment. Through lecture and hands-on lab assignments, candidates learn to perform basic operator level functions on CNC Machine Tools.

The first week of class will be a basic skills class.  The students that successfully complete this one week class, and are recommended by the instructor, will then begin the CNC class the following week.  You will be notified by the grant staff if you have been recommended to move on with that class.

This course combines knowledge with application. Students study in the classroom and apply theories on the shop floor. Students are exposed to every day manufacturing problems and learn to solve them one at a time, such as broken tools, eliminating chatter, deficient or imperfect process plans, changing inserts, compensating for tool wear, and editing programs.  Students perform the following tasks:


Debug CNC 2-axis Mill G&M code programs

  • Face, Profile, Chamfer, Engrave, Drill and Tap
  • Cutter Diameter Compensation

Machine Setup:

  • Align straight edges and pick up hole locations using an Indicator
  • Setup and define Work offsets and Tool Length offsets using an edge finder
  • Probe parts and tools


Cutting Tools (Mill & Lathe)

  • ANSI & ISO
  • Helix, Number of flutes, Solid vs. Indexable, CAT40 Holders
  • Rake angles

Basic Operator functions:

  • Power On & Home, Upload programs, Load tools into magazine, Simulate
  • Top off coolant & check concentricity using a Refractometer

Metrology: Micrometers & Dial Calipers

Applied Mathematics

  • Feedrate & spindle speed calculations
  • Depth of cut considerations
  • Drill point calculations
  • Threading calculations
  • Calculating Tap Drill size

Topical Outline:

  • Manufacturing Overview
  • Intro to Bridgeport milling, turning, and surface grinding
  • Intro to Inspection
  • Indicators & Edge Finders
  • Cutting Tool Technologies
  • Print Reading Overview
  • Shop Math
  • PC Fundamentals
  • CNC Mill G&M Code Programming Overview
  • CNC Mill Operation

CNC Mill Setup & Operation: Students learn the general concepts of CNC Mill setup and operation. Through lecture and lab assignments, students are exposed to machine setup using an indicator and edge finder to define work offsets (G54-G59), and tool height offsets (G43).  Students will also upload, debug, and run G&N code programs in a safe manner.

Mill Tooling: Review of basic mill and lathe tools used on CNC machines for high speed milling and turning. Style, shape and rake angles are discussed. Students setup machining centers and learn how to change indexable inserts. ANSI and ISO standards are discussed in class.

Basic Metrology: An introduction to reading micrometers, dial calipers, height gages, and basic inspection equipment used in the shop.

Shop Math: Students learn to use both Inch and metric units of measure. Fractions and decimals are used in everyday applications.

CNC Mill G&M Code Programming: Students learn the general concepts of CNC Mill programming. Through lecture and lab assignments, students are exposed to shop floor programming and principles of 2-1/2 axis CNC milling. Profiling, facing, drilling, reaming, tapping, and pocketing are emphasized, accompanied by demonstrations, student programming, and hands-on setup and machine operation.



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