×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

standard metric tolerance in title block?

standard metric tolerance in title block?

standard metric tolerance in title block?

(OP)
I am in the process of adding the standard tolerance for metric parts in the sheet format. The company I work for does not have a standard tolerances for metric in thier current sheet format. I don't want to add tolerances to every dimension. Can anyone help me? Thanks

LuisAlberto

RE: standard metric tolerance in title block?

You can use ISO tolerance description, like
js10 (JS10)
These tolerances are nominal size dependent, it means that
10mm js10 has smaller tolerance than 100mm js10.
You would have to educate a lot of people if you want to go this way.
More about the ISO tolerances / fits is in Machinery's Handbook.
gearguru

RE: standard metric tolerance in title block?

Standard tolerances can be added to the titleblock the sane as english dimensions are. The restriction comes if you say your drawing meets the requirements of ASME Y14.5m. This says that you cannot use trailing zeros to hold decimal places which would change the tolerances.

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

Ben Loosli
CAD/CAM System Analyst
Ingersoll-Rand

RE: standard metric tolerance in title block?

(OP)
I do want to use ANSI Y14.5 for adding the tolerance in the title block. How do I solve the problem on the trailing zeros to hold the tolerances? Is there another option but staying with ANSI standards? Thanks for the answers.

Luis Rivera

RE: standard metric tolerance in title block?

One solution might be to invoke ANSI B4.3-1978 (R1999), "General Tolerances for Metric Dimensioned Products" rather than specifying tolerances in the title block.  ANSI B4.3 shows how to specify the general tolerances for metric dimensions without a tolerance designation.

You could replace the existing block tolerance data in the title block with a statement such as "SEE ANSI B4.3 FOR GENERAL TOLERANCES" or simply "X" out the existing tolerance data and send the user to B4.3 via a general drawing note.

GDTGUY

RE: standard metric tolerance in title block?

OOPS!!!

I need to retract the second part of my last posting.

You do not invoke ANSI B4.3 on the drawing!!!  ANSI B4.3 simply provides options for specifying the tolerance on the drawing for metric dimensions. (I got my standards crossed up and was thinking of ANSI B4.2 Preferred Metric Limits and Fits!!!!..........sorry!)

Take a look at the options shown in ANSI B4.3.  One of them will probably meet your needs.

GDTGUY

RE: standard metric tolerance in title block?

(OP)
Thank you for your answers. I will look into ANSI B4.3 and see what is suitable for us. Thank you again.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Resources

White Paper - Strategies to Secure Connected Cars with Firewalls
White-hat hackers have demonstrated gaining remote access to dashboard functions and transmissions of connected vehicles. That makes a firewall a vital component of a multilayered approach to vehicle security as well as overall vehicle safety and reliability. Learn strategies to secure with firewalls. Download Now
White Paper - Model Based Engineering for Wire Harness Manufacturing
As complexity rises, current harness manufacturing methods are struggling to keep pace due to manual data exchanges and the inability to capture tribal knowledge. A model-based wire harness manufacturing engineering flow automates data exchange and captures tribal knowledge through design rules to help harness manufacturers improve harness quality and boost efficiency. Download Now
White Paper - What is Generative Design and Why Do You Need It?
Engineers are being asked to produce more sophisticated designs under a perfect storm of complexity, cost, and change management pressures. Generative design empowers automotive design teams to navigate this storm by employing automation, data re-use and synchronization, and framing design in the context of a full vehicle platform. Download Now
eBook - Simulation-Driven Design with SOLIDWORKS
Simulation-driven design can reduce the time and cost of product development. In this engineering.com eBook, we’ll explore how SOLIDWORKS users can access simulation-driven design through the SOLIDWORKS Simulation suite of analysis tools. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close