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Introduction to Machining Processes

SKTR 113

Introduction to Machining Processes

SKTR 113

Course Description

Introduces the manufacturing facility. Utilizes safety, materials, hand-tools, precision instruments, drill presses, lathes, mills, grinders, and saws. Credit may be earned in MS 113 or SKTR 113 but not both. (30-30)

Outcomes and Objectives

Practice safe working habits.

Objectives:

  • Identify proper work attire and personal protection items
  • Demonstrate safe work habits when operating equipment.

Operate a milling machine correctly.

Objectives:

  • Demonstrate a variety of different machining skills by completing assigned projects to specifications.
  • Select proper speeds for specific machining operations.
  • Select proper work holding devices.
  • Use precision measuring instruments to measure to tolerances of .002”.
  • Describe the various components of the mill and their roles.
  • Identify different types of mills.
  • Identify the components of the vertical column and knee milling machine.
  • Describe the relationship of the speed controls on the mill head.
  • Describe the relationship of the feed controls on the mill head.
  • Describe the components used to adjust spindle depth.
  • Describe the components of the mill table.
  • Identify the different types of toolholders used on the mill.

Demonstrate knowledge of semi-precision and precision measuring tools.

Objectives:

  • Demonstrate the proper use and care of measuring tools.
  • Measure accurately to a tolerance of .0001" given a set of mic's.
  • Select and stack Gage blocks to a given dimension.
  • Select and use indicators for specific task.

Demonstrate an understanding of and perform basic layout and benchwork techniques.

Objectives:

  • Select proper layout tool for a given task.
  • Demonstrate proper care and handling of layout tools.
  • Describe the purpose of layout and benchwork operations.
  • List common benchwork operations.
  • Describe the advantages of layout.
  • Match the type of layout tools with their descriptions.
  • Describe the procedures for the following bench operations for the sample part.

Identify various kinds and uses of sawing machines.

Objectives:

  • Select the proper blade for a particular material to be cut.
  • Cut various shapes using power band saws and hand hack saws.
  • Describe the basic sawing process.
  • Name the parts of a saw blade and a saw blade tooth.
  • Describe the properties needed for saw blade materials.
  • Demonstrate an understanding of the factors that determine tooth spacing.
  • Explain the importance of blade break-in.

Identify various kinds of drilling machines.

Objectives:

  • Select the best machine for the job.

Identify and perform various drilling operations.

Objectives:

  • Drill holes with a center line tolerance of 1/64”.
  • Adjust the speed to the desired setting on belt drive, geared drive, and variable speed drive drill press.
  • Select proper tools for various drilling applications.
  • Describe hand tapping.
  • Explain the purpose of the sequence of hand taps.
  • Describe the steps necessary to perform the following operations on the sample workpiece.

Perform common operations on an engine lathe.

Objectives:

  • List four of the basic operations done on an engine lathe.
  • Identify proper types of lathe work holding devices.
  • Calculate the correct rpm, given the material, operation, and the diameter, using the cutting speed formula.
  • Demonstrate how to properly set a quick-change gear box for a particular feed or thread.
  • Set up and turn diameters, shoulders, undercuts and threads.
  • Describe the lathe using proper terminology.
  • Identify the different types of lathes.
  • Describe the dimensions that determine the size of the lathe.
  • Describe the role of the various parts of the machine.
  • Describe common types of toolholders.
  • Describe common types of cutting tools.
  • Describe common types of workholding devices.
  • List common types of OD cutting operations.
  • List common types of ID cutting operations.
  • Describe the following common engine lathe operations.
  • Describe common factors to consider when setting up stock in the lathe.
  • List the steps necessary to drill the sample part with a 3/4 inch drill.
  • Describe how to establish tool location on the sample part during the boring operation.

Recognize a variety of milling machines.

Objectives:

  • Identify the different types of mills.
  • Describe the mill.
  • Identify the components of the vertical column and knee milling machine.

Identify various milling cutters.

Objectives:

  • Identify types of milling cutters.
  • Select proper milling cutter for operation.