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
We shared our list, now Design News readers tell us which artificial intelligence movies they watch again and again.
Researchers have been working on a number of alternative chemistries to lithium-ion for next-gen batteries, silicon-air among them. However, while the technology has been viewed as promising and cost-effective, to date researchers haven’t managed to develop a battery of this chemistry with a viable running time -- until now.
Norway-based additive manufacturing company Norsk Titanium is building what it says is the first industrial-scale 3D printing plant in the world for making aerospace-grade metal components. The New York state plant will produce 400 metric tons each year of aerospace-grade, structural titanium parts.
Researchers have simplified the fabrication of the geometric requirements for fluid motion in microrobots for in vivo medical applications.
The National Aeronautics and Space Administration’s recently announced plan to put an electric airplane in the air by 2018 is forward-looking, but hardly unique.
More:Blogs|News
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Jul 11 - 15, Embedded System Design Techniques™ - Debugging Real-time Embedded Software – Hands on
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7 | 8 | 9 | 10


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.
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Technology Marketplace

Copyright © 2016 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service