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Home Engineering Mechanics Machine Drawing Lab Drafting of flanged coupling (butt muff coupling)
Machine Drawing Lab Lab Experiments

Drafting of flanged coupling (butt muff coupling)

Drafting of flanged coupling (butt muff coupling)



To draft a butt muff coupling by using auto CAD 2016 software

Software used:

Auto cad 2016

Commands used:

Draw commands:Line, Rectangle, Poly line, Polygon, Circle, Construction line, Arc, Spline, Ray, Hatch.

Modify commands:Erase,Copy,Mirror,Array,Move,Rotate,Trim,Extend,Stretch,Fillet,Join, Chamfer.

Dimension command:

  • Radius dimension
  • Linear dimension
  • Diameter dimension
  • Angular dimension


  1. Specify units by using units command unit change the insertsents by given and click on OK button
  2. Now you have to specify drawing size using LI enter command First enter 0, 0 and enter 420,297 and click enter
  3. Reset model space limits
  4. Specify lower left corner or [on/off] <0, 0>0, 0
  5. Specify upper right corner <12, 9> 420,297 Refit the screen by using zoom command
  6. Select the circle command and draw the muff with circle command
  7. Draw the shaft circle by using the circle command and draw the key by using rectangle command on the shaft
  8. Project all lines from the side view Draw the muff by using auto cad feature
  9. Draw the shaft and place the key on the shaft by given dimensions
  10. Hatch the muff by sing hatch command angle 45 degrees and distance between lines of hatch is 2mm
  11. Give the dimensions so that muff coupling and change the required dimensions style


The required muff coupling is drafted in auto cad 2016 software.