HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Comments
View Comments: Newest First|Oldest First|Threaded View
Tim
User Rank
Platinum
Re: The failing spring clutch
Tim   10/30/2011 10:29:06 PM
NO RATINGS
I agree.  It is important to learn from your mistakes, but there is just as much importance to not be too complacent in your sucesses.  Just because something worked once does not mean it will always work in all applications.

William K.
User Rank
Platinum
The failing spring clutch
William K.   10/28/2011 10:09:30 PM
NO RATINGS
A unique presentation in Shelock Ohms segment!

Of course, the first failure was with those who assumed that since the application was similar, that the torques would be the same. That kind of thinking is lazy, with no excuses. Of course, there is a lot of lazy going around. Ignoring the deformed clutch spring is even worse, since that is such a very obvious indication of an overload.  Making your own torque sensor was certainly one way to find out what actually was happening, I guess that was what you had to do, because there did not used to be any source for torque sensors. But making your own sensors like that would be expensive. 

Probably it would have been useful to study the previous design that had a good track record and find out what was so different, since possibly it would be something that could be used in the newer design, (except that there were lots of them already in the field).

I have seen a few disasters caused by people thinking that something was the same as the previous version. 

ulav8r
User Rank
Iron
Cause of reduced life?
ulav8r   10/28/2011 12:18:16 PM
NO RATINGS
I did not see an answer as to why the clutch failed much sooner in the new application.  Was it being stressed more in the new application or had something else changed?

ulav8r
User Rank
Iron
Cause for Failure?
ulav8r   10/28/2011 10:45:19 AM
NO RATINGS
I may be having a slow day, but I saw no explanation about why the clutch that had worked for years was now failing.  I would infer that the new application required more start up torque and therefore overstressed the clutch more than previous applications.  Is that right?



Partner Zone
Latest Analysis
Hacking has a long history in the movies, beginning with Tron and War Games and continuing through The Girl with the Dragon Tattoo.
In a move that strengthens its 3D design business, Stratasys continued a 15-month buying spree this week by announcing its plan to acquire GrabCAD, a provider of a cloud-based collaboration environment for engineers.
Feature-advantage-benefit could help engineers in how we approach design problems, how we sell our ideas to management, and how we market ourselves when it comes to jobs.
Many diverse markets take advantage of semiconductor IP; so many that no one can recite the entire list without leaving off several. So why do we track all the vertical markets? They all have a unique set of requirements and value attributes differently. One major vertical market segment is automotive.
Adam Berger hacked a computer keyboard into a mini key-tar to play with his band.
More:Blogs|News
Design News Webinar Series
9/10/2014 11:00 a.m. California / 2:00 p.m. New York
7/23/2014 11:00 a.m. California / 2:00 p.m. New York
7/17/2014 11:00 a.m. California / 2:00 p.m. New York
6/25/2014 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Sep 22 - 26, MCU Software Development A Step-by-Step Guide (Using a Real Eval Board)
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Next Class: September 30 - October 2
Sponsored by Altera
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service