MFG 250 - Engine Lathe Theory

1. Explain the parts of the Turning Machines
   1. Identify the most important parts of a lathe and their functions
   2. List all of the lubrication points for a given type lathe
   3. Identify standard, quick-change and turret-type toolholders mounted on a lathe carriage
   4. Describe the type of tooling used on the tailstock
2. Demonstrate an understanding of work holding devices
   1. Explain the uses and care of independent and universal chucks
   2. Explain the limitations and advantages of a collet
   3. Describe how a collet is setup for use on a lathe
   4. Explain the uses of, and differences between, drive and face plates 
3. Demonstrate an understanding of the carriage
   1. Describe the relationship between longitudinal feeds and cross feeds
   2. State the differences in types of cross feed screw micrometer collars
   3. Describe the use of various feed levers
   4. Explain how to set up to make facing cuts to a given depth and how to measure them 
4. Demonstrate knowledge of the proper care and use of pedestal grinding machines for tool grinding purposes
   1. Describe how the pedestal grinder is used
   2. Explain the term “ring test” on grinding wheel
   3. Discuss the safety steps in using a pedestal grinder
5. Demonstrate a knowledge of cutting tools
   1. Explain the purpose of rake and relief angles
   2. Explain the purpose of chip breakers
   3. Describe the function of form tools
   4. Name the advantages of using high-speed steel for tools
   5. Explain when zero or negative rake should be used
6. Demonstrate knowledge of center drilling in a lathe
   1. Determine proper speed and feed for a given material and size
   2. Name two reasons for center drilling a work piece in the lathe
   3. Explain two causes of center drill breakage
   4. Describe what happens when you drill too deeply with a center drill
7. Demonstrate knowledge of turning in a lathe
   1. Describe the correct setup procedure for turning between centers
   2. Select correct feeds and speeds for turning operation
   3. Detail the steps necessary for turning to size predictably
   4. Explain the procedures for drilling, boring, reaming, knurling, recessing, parting and tapping in a lathe