Need help to read and understand machine drawings

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Discussion Overview

The discussion revolves around understanding and interpreting machine and assembly drawings, particularly the challenge of visualizing 2D drawings in a 3D context. Participants share their experiences and suggest methods for improving drawing skills and comprehension.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant expresses difficulty in visualizing 2D drawings into 3D and seeks effective methods for understanding machine drawings.
  • Another participant suggests that visualization methods are unique to individuals and emphasizes the importance of familiarizing oneself with symbols and practicing reading drawings.
  • A participant advocates for practice and experience as key to improving drawing skills.
  • One suggestion includes sketching and drawing as a hobby to train the brain, along with exercises from drafting texts to enhance understanding of different views.
  • Another participant highlights the value of drawing by hand rather than relying solely on software, proposing practical exercises like drawing everyday objects from multiple perspectives.

Areas of Agreement / Disagreement

Participants generally agree on the importance of practice and familiarity with symbols in understanding machine drawings, but there is no consensus on a single effective method for visualization, as experiences and suggestions vary among participants.

Contextual Notes

Some suggestions depend on individual creative abilities and may not apply universally. The discussion does not resolve the effectiveness of different methods or the best practices for learning to read machine drawings.

hemal1972
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i am a mechanical engineer. but, i am not good in machine drawings. i can not understand the assembly drawings. i can not visualize the 2d drawings into 3d drawings. if anybody knows the perfect method to understand and read machine/assembly drawings then please inform me.
 
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hemal1972 said:
i am a mechanical engineer. but, i am not good in machine drawings. i can not understand the assembly drawings. i can not visualize the 2d drawings into 3d drawings. if anybody knows the perfect method to understand and read machine/assembly drawings then please inform me.

There's not really a method for visualization. I find that it is very unique to each person and their natural creative ability.

As far as the machine and assembly drawings, you just need to familiarize yourself with the symbols and practice reading the drawings. It takes a bit of time to get used to them at first and they can vary from OEM to OEM.

CS
 
Practise and experience.
 
hemal1972 said:
i can not visualize the 2d drawings into 3d drawings.

Sketch and draw as much as you can (make it a hobby) - train your brain.

Do exercises from drafting texts:
Draw isometric views from orthographic.
Draw orthographic from isometric.
You should be able to start with iso, convert to ortho then convert back again to iso without distortion of the object.

Solid modelling programs make projections far too easy. Drawing with a pen and paper will help greatly.
 
Good point about actually DRAWING things rather than letting the computer do the work.

How about trying to draw plans of things you see? Look at your coffee cup...I just happen to have mine handy here...with one eye, square on, and draw the outline. Rotate it 90deg and draw. Then look directly down on it and do the same. See if you can line up each drawing so the common visible edges are parallel. You've made an engineering drawing.
 

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