Standard

 

MCA 217 – CNC Practical Applications

Course Description

Provides instruction in specialty tooling and multi-axis machining. Students will also gain experience in process control. Topics include: EDM/ECM, specialty tooling, multi-axis machining, process control, safety and laboratory practice.

 

Competency Areas

Hours

 

EDM/ECM

Class

4

Multi-Axis Machining

D. Lab

0

Process Control

P. Lab/O.B.I.

6

Specialty Tooling

Credit

6

Safety

 

 

 

 

 

Prerequisite/Corequisite:

MCA 213, MCA 215

 

Course Guide

 

Competency

After completing this section, the student will:

Hours

Class

D.Lab

P.Lab/

O.B.I.

EDM/ECM

 

 

 

 

 

 

 

 

MULTI-AXIS MACHINING

 

 

 

Servo motors

Explain what servo motors are and how they are used to measure table movement in CNC machining.

 

 

 

 

Define two and three axis machine tools and list examples of each.

 

 

 

Axis definitions

Define the Z-axis and how it is determined on any machine tool.

 

 

 

 

Define the following axis: X, Y, A, B, C, R, S, T.

 

 

 

 

Explain the relationship that the A, B, and C axis have to the X, Y, and Z axis.

 

 

 

 

List the machine accessories needed to be able to machine in the A, B, and C-axis.

 

 

 

Applications

Set up a CNC end mill to machine the A, B, and C axis.

 

 

 

PROCESS CONTROL

 

 

 

Definitions

Define quality control, statistical quality control, sampling, adaptive control, and self correcting machines.

 

 

 

Data collection

Explain in-process sensing, tool lift predictions, feed back from workpiece, cutting process and tool, and how this information is used by self correcting machines.

 

 

 

 

Describe the systems that collect feedback information during CNC processes.

 

 

 

Tool wear

List the problem areas that are caused by tool wear in automated production machines.

 

 

 

SPECIALTY TOOLING

 

 

 

Tool materials

List the types of cutting tool materials, the advantages of each and the types of materials they were developed for.

 

 

 

 

Define hardmetal tooling, hard metal insert tooling, sintered carbides, coated carbides, cemented carbides, cermets, ceramic cutting tools, and diamond cutting tools.

 

 

 

Shaped tools

Describe how shaped tools are used in many CNC processes such as EDM, gear cutting, shaping unusual parts and cutting die blocks.

 

 

 

Jigs and fixtures

Explain the difference between jigs and fixtures and how each are used in machining processes.

 

 

 

Automation

Discuss automation and robots and explain how robotic arms are used in automated machine centers or cells.

 

 

 

 

Describe automatic feed methods for various CNC machines.

 

 

 

SAFETY

 

 

 

 

 

 

 

 

 

Suggested Resources

 

Books

 

Baril, R. (1987). Modern machining technology. Albany, NY: Delmar.

Luggen, W. W. (1986). Introduction to NC-CNC operation. Englewood Cliffs, NJ: Prentice Hall.

Machining metals handbook. (1989). Materials Park, OH: ASM International.

McMcGeough, J. A. (1988). Advanced methods of machining. New York: Routledge Chapman & Hall.

Smith, G. T. (1989). Advanced machining. New York: Springer-Verlag.

Walker, J. R. (1989). Machining fundamentals. South Holland, IL: Goodheart.