MECH 120 - Computer Numerical Control (CNC) Programming I (Mill)

3 Credits: (2 lecture, 2 lab)

Course Description
This course will provide the knowledge and skills necessary for developing two-dimensional (2D) and three-dimensional (3D) Computer Numerical Control (CNC) milling programs. Emphasis will be on the use of computer aided manufacturing (CAM) milling software to generate tool paths from part geometry. CNC Code structure and modification will also be addressed for developing well organized and effective programs. This course will benefit the working machinists, tool and die makers, students entering the manufacturing field, and entry-level CNC programmers.

Credit for this course can be granted through verification of the following National Institute for Metalworking Skills (NIMS) certifications: Measurement, Materials, & Safety (MMS), CNC Milling-Setup/Programming Level I, and CNC Milling Level II credentials.

Butler County Community College does not offer NIMS Certification.

Note Spring semester only.

Prerequisite MECH 114 or permission of instructor.

Text
Mastercam® 2018 Training Guide Mill 2D & 3D/Lathe. Kitchener, ON: CamInstructor, 2018. Print.

Objectives
The student will be able to:

A. Identify appropriate safety procedures in accordance to industrial standards.

B. Create 2D and 3D part geometry using Computer-Aided Drafting and Design (CADD) and CAM software.

C. Use CAM software to generate tool paths from part geometry.

D. Document calculated machining and setup parameters.

E. Modify part geometry and CNC programs.

F. Apply cutter compensation.

G. Perform machining operations from generated CNC code safely.

Content
A. CADD and CAM software usage

B. Milling speeds, feeds, and setup parameters

C. Cartesian coordinate usage

D. Contouring, facing, drilling, pocketing, re-machining, and tapping tool paths

E. Cutter compensation

F. Machine parts from software generated G & M codes

G. Safety and flow processes

Student Evaluation
All students must score a minimum of 90% on the departmental safety exam before using any laboratory equipment.

Objectives B, C, and E are assessed through programming assignments and examinations.

Objectives B, C, D, E, and G are assessed through machined projects.

Objective F is assessed through several specific cutter compensation assignments.