Standard

 

MCA 207 – Advanced Lathe Operations II

Course Description

Provides instruction in advanced lathe operations and procedures. Emphasis is placed on skill development through laboratory experiences. Topics include: eccentric turning, special setups, tolerance turning, and safety.

 

Competency Areas

Hours

 

Eccentric Turning

Class

3

Special Setups

D. Lab

4

Tolerance Turning

P. Lab/O.B.I.

3

Safety

 

 

 

Credit

6

 

 

 

Prerequisite:

MCA 205

Corequisite:

 

 

Course Guide

 

Competency

After completing this section, the student will:

Hours

Class

D.Lab

P.Lab/

O.B.I.

ECCENTRIC TURNING      

 

 

 

Setup

Describe independent chunks and the types of work they are designed to be used for.

 

 

 

 

Center workpieces in a four jaw chuck using a cutting bit in the tool post, a dial indicator, and a wiggler.

 

 

 

 

Demonstrate reversing the jaws of a four jaw chuck to accommodate odd shaped workpieces.

 

 

 

Application

Complete the following operations at specified points on a square workpiece: center drill, drill holes of specific size, cut internal threads, ream, counter bore, countersink, and bore over sized holes.

 

 

 

SPECIAL SETUPS                           

 

 

 

 

Define mandrel turning, follower and steady rest, and milling and grinding on the lathe.

 

 

 

 

Explain form turning and demonstrate tool grinding techniques.

 

 

 

 

Prepare the lathe and a workpiece for turning using a mandrel, follower rest, steady rest, milling, and grinders.

 

 

 

 

Explain the use of a hydraulic tracing attachment.

 

 

 

 

Demonstrate using cut off tool.

 

 

 

TOLERANCE TURNING               

 

 

 

 

Explain tolerance, actual size, given size, unilateral tolerance, types of fit, and where specifications for tolerance and fit can be found.

 

 

 

 

Demonstrate the ability to turn to tolerance size, and locate features on a round workpiece and eccentric features on a square workpiece.

 

 

 

SAFTY

 

 

 

 

 

 

 

 

 

Suggested Resources

 

Books

 

ASM International. (1987). Tool materials for high-speed machining. Materials Park, OH: Author.

ASM International. (1988). Machining source book. Materials Park, OH: Author.

ASM International. (1989). Machining metals handbook (Vol. 16). Materials Park, OH: Author.

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

Brown, W. C., et al. (1985). Modern general shop. South Holland, IL: Goodheart-Willcox.

Business Communications Staff. (1986). Advanced high technology machining systems. Norwalk, CT: Author.

Feirer, J. L. (1986). General metals. New York: McGraw-Hill.

Gingery, D. J. (1982). The milling machine. Springfield, MO: Author.

Kibbe, R. A. (1985). Milling machine operations. New York: John Wiley & Sons.

Kibbe, R. A., et al. (1991). Machine tool practices (4th ed.). Englewood Cliffs, NJ: Prentice Hall.

Matt, S. R. (1985). Machine tool operations: An introduction. Belmont, CA: Wadsworth.

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

Rizzo, L. (1984). Milling machine explained. Garden City, NJ: Bergwall.

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