Metal Lathe Rubric

Identify the following tool features

  • Emergency stop, foot brake (if applicable)
  • Headstock, spindle
    • Spindle on/off and direction control
    • Spindle speed control
  • Chuck, chuck jaws, chuck key
  • Collets & draw tube
  • Bed and ways
  • Carriage/saddle, cross slide, and compound
    • Feed handles for each
    • Compound angle adjustment
  • Toolpost lock, rotation
  • Tailstock handle, locks
  • Turning, facing, and boring tools

Machine Safety: Identify and mitigate common hazards

  • Spinning/moving things - chuck and jaws, workpiece, lead screw
  • Stationary things that could accidentally move - esp workpieces, tools
  • Heavy things - chucks and workpieces
  • Sharp things - tools, chips, burrs on workpieces
  • Hot things - tools, chips, workpieces

Personal Protective Equipment

  • Knows what clothing and PPE should and should not be worn when operating the mill, such as:
    safety glasses, work gloves, rings, jewelry, open/closed toed shoes, long hair, long/short sleeves

Tool Selection

  • Select an appropriate cutting tool for a basic task
  • Understand how tool properties like tool geometry, tool material, etc. affect correct tool selection and setup
  • Determine correct feeds, speeds

Allowable Materials

  • Can name three materials allowed on the mill.
  • Can name three materials that are not allowed on the mill

Safe Operation

  • Demonstrates proper removal and mounting of chuck (cleans nose, correct force)
  • Demonstrates mounting/removing of collets
  • Demonstrates proper work-holding in 3 jaw
  • Demonstrates proper feed and speed selection
  • Demonstrates proper cutting tool selection
  • Demonstrates proper mounting of cutting tool in toolpost (orientation, height)
  • Demonstrates turning and facing
  • Demonstrates center drilling with tailstock
  • Demonstrates cleaning the lathe.

Limits of Knowledge

  • Demonstrates awareness of limits of own knowledge, and can identify when and where to seek additional information or help

Revision #4
Created Wed, Apr 7, 2021 4:07 PM by Machine Shop Lead
Updated Wed, Apr 7, 2021 6:54 PM by Machine Shop Lead