Engineering drawings 2

[finesse]

I have searched the forum but no luck.

I am looking for examples of professional high quality engineering drawings.

Please also critique the engineering drawing I have attached, I would like to improve it.

Thanks

 

[drawoh]

finesse,

This does not appear to be a SolidWorks question. Questions about drafting should go into forum1103.

Have you taken a drafting course anywhere? Formal training really does help.

JHG

 

[TheTick]

Really struggling to contain my inner Simon Cowell. Get help. Lots of it.

 

[ctopher]

I agree with drawoh.
It will save you time and $$ to get formal training in drafting, GD&T and SolidWorks (if SolidWorks is what you are using).

Chris
SolidWorks/PDMWorks 08 2.0
AutoCAD 06/08
ctopher's home (updated 10-07-07)

 

[JMirisola]

While not complete, here's an example. You should follow the advice from drawoh and ctopher, though. The drawing you supplied would not allow for the part to be created. For example, I had to guess where the circular cutouts went, as well as their depth. There's no GTOL or material callouts.

Jeff Mirisola, CSWP
Certified DriveWorks AE

http://designsmarter.typepad.com/jeffs_blog

Dell M90, Core2 Duo
4GB RAM
Nvidia 3500M

 

[fcsuper]

JM, you dim'd to a hidden line! tsk tsk.



Matt Lorono
CAD Engineer/ECN Analyst
Silicon Valley, CA
Lorono's SolidWorks Resources
Co-moderator of Solidworks Yahoo! Group
and Mechnical.Engineering Yahoo! Group

 

[JMirisola]

You weren't supposed to notice that... :-(

Jeff Mirisola, CSWP
Certified DriveWorks AE

http://designsmarter.typepad.com/jeffs_blog

Dell M90, Core2 Duo
4GB RAM
Nvidia 3500M

 

[ctopher]

Can you give negative stars?

Chris
SolidWorks/PDMWorks 08 2.0
AutoCAD 06/08
ctopher's home (updated 10-07-07)

 

[looslib]

Use of the abbreviation TYP is not covered in ASME Y14.5. Section 1.9.5 covers methods of repetetive features or dimension practices.

Repetetive dimensions should called out with a number and an X, to indicate how many times that feature or dimension is on the part.


"Wildfires are dangerous, hard to control, and economically catastrophic."

Ben Loosli

 

[fcsuper]

looslib,

ASME doesn't preclude TYP. "Should" not "shall"

Matt Lorono
CAD Engineer/ECN Analyst
Silicon Valley, CA
Lorono's SolidWorks Resources
Co-moderator of Solidworks Yahoo! Group
and Mechnical.Engineering Yahoo! Group

 

[Standing]

Matt is right ASME Y14.5M-1994 uses "may" in 1.9.5 Repetitive Features or Dimensions. That being said I do not let our people use TYP.

Bradley
SolidWorks Pro 2008 x64 SP3.0
PDMWorks Workgroup, Dell XPS Intel(R) Pentium(R) D CPU
3.00 GHz, 5 GB RAM, Virtual memory 12577 MB, nVidia 3400
e-mail is Lotus Notes

 

[Eltron]

I'm sure I'm going to ruffle some feathers here, but not all engineering drawings need to conform exactly to ASME Y14.5. I'm sure larger companies that have a lot of people handling the drawings see a benefit. However, with smaller companies the benefit can be lost all together. Probably about half of the time I end up on the phone with the shops anyways, even if the drawing is in compliance with GD&T standards. The other half of the time they f it up because they missed a .05" chamfer on the inside of a part. I've worked with outside engineering firms in other countries that don't even know what GD&T is, yet somehow they get parts manufactured and put food on their table.

Having said that, I absolutely understand the need for the standard when you are apt to get removed from your design. I just don't believe that every drawing needs to be held to the same standard, especially if I'm handling it from cradle to grave, as long as you have provided all of the necessary information on the print and in the model.

I'll be hiding in the conference room now...

Dan

http://www.eltronresearch.com

 

[Standing]

Eltron,
You are absolutely right, a star for you. We pick and chose what we want to follow. Usually it is the engineer with the most power that wins.
Who gets hurt here is the new young kid starting out that learns none standard way of doing things and then moves on. It is tough sometimes retraining a young kid, “That’s not the way my old company did it”. The one I dislike the most is “That’s not how AutoCAD does it”.


Bradley
SolidWorks Pro 2008 x64 SP3.0
PDMWorks Workgroup, Dell XPS Intel(R) Pentium(R) D CPU
3.00 GHz, 5 GB RAM, Virtual memory 12577 MB, nVidia 3400
e-mail is Lotus Notes

 

[fcsuper]

ASME Y14.100 states under 1.2 Application:

Application of this Standard may necessiate tailoring to exclude unnecessary requirements.

Have at it! I would say that your company standards should explicitly stated in terms of what does not apply within the Standard, with some general comment like::

Exclude from practice any portions of any standards that differ from instructions within this document.

Matt Lorono
CAD Engineer/ECN Analyst
Silicon Valley, CA
Lorono's SolidWorks Resources
Co-moderator of Solidworks Yahoo! Group
and Mechnical.Engineering Yahoo! Group