MECH 121 - Computer Numerical Control (CNC) Programming II (Lathe)

3 Credits: (2 lecture, 2 lab)

Course Description
This course will provide the knowledge and skills necessary for developing Computer Numerical Control (CNC) turning programs. The practice and theory of straight, taper and radius turning, boring, grooving, threading, tapping, and contouring from geometry creation through generated CNC code will be covered. Emphasis will be on the understanding of CNC Code as well as the computer skills necessary for developing well organized and effective CNC machining operations. 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 Turning-Setup/Programming Machining Level I, and CNC Turning Level II credentials.

Butler County Community College does not offer NIMS Certification.

Note Fall semester only.

Prerequisite MECH 114 or permission of instructor.

Text
Manton, Matthew. Mastercam® 2018 Training Guide Mill 2D and 3D Lathe Combo. Kitchener, ON: CamInstructor, 2018. Print.

Objectives
The student will be able to:

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

B. Create geometry using Computer-Aided Manufacturing (CAM) and simulation software.

C. Generate tool paths based on constructed 2D or 3D part geometry.

D. Document calculated turning and setup parameters.

E. Machine lathe parts from generated CNC code safely.

F. Apply tool nose radius (TNR) compensation.

G. Modify CNC programs.

Content
A. Computer-Aided Drafting and Design (CADD) and CAM software usage

B. Turning speeds, feeds, and setup parameters

C. Facing, roughing, finishing, drilling, threading, boring, grooving, and cutoff tool paths

D. Tapping and drilling canned cycles

E. Cartesian coordinates

F. TNR compensation

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 D are assessed through programming assignments and examinations.

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

Objective F will be assessed through a specific TNR assignment.

Objective G is assessed through a machined thread assignment in addition to making any changes to any assignment or project