MECH 114 - Computer Numerical Control (CNC) Programming

3 Credits: (3 lecture, 1 lab)

Course Description
This course will provide the students with the necessary skills to interpret and or develop a CNC program from conception through application using basic FANUC G and M codes as related to milling and turning.  More advanced topics of canned cycles and subprograms are introduced in addition to basic programming procedures and machining operations in accordance with industrial standards.

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

Butler County Community College does not offer NIMS certification.

Corequisite MATH 117 or MACH 117 or permission of instructor.

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

B. Describe the fundamentals of metal removal processes.

C. Identify the various components of CNC turning and machining centers.

D. Develop process plans for machining operations including the calculation of machining parameters, part home determination, workholding, and tooling selection.

E. Calculate individual cutter specifications including, speeds, feeds, and positional locations using technical mathematics principles and the Cartesian coordinate system.

F. Create CNC word address programs using industry-standard FANUC G and M codes, canned cycles, and subprogram routines.

G. Operate CNC machine tools by transferring, verifying, and editing CNC programs and performing basic setup functions.

Content
A. CNC machine tool design/construction/operation, including Cartesian coordinate system application, computer-based controllers, tool changers, drive and control systems

B. Basic work and tool holding methods, part setup, tool length and machine offsets

C. Machining safety practices and protective equipment

D. Feed and speed calculations, including constant cutter speed for arcs

E. Basic cutting tool geometries and materials

F. Cutter offset calculation for cutter compensation

G. Basic word address programming of features (milling): holes, threads, pockets, circular profiles, linear profiles, and subroutines

H. Basic word address programming of features (turning): turning, facing, profiling, cut-off, and grooving

I. Development of written process plans for machining operations

J. Basic measurement approaches and instruments

K. Introduction to computer-aided manufacturing (CAM) software for CNC programming

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

Objectives A, B, C, E, & F will be assessed through quizzes and assignments.

Objectives A, D, E, F, & G will be assessed through tests and projects.