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
A middle school team from Rochester, Mich., has again nabbed the grand prize in the annual international Future City Competition, which drew students from 37 regions of the United States, as well as from England and China.
The actor captured imaginations and inspired scientists and engineers all over the world in his role as Star Trek's Mr. Spock.
You know you're an engineer if you chuckle whenever anyone says "centrifugal force," or you find yourself at the airport studying the baggage handling equipment.
The word “smart” is becoming the dumbest word around. It has been applied to almost every device and system in our homes. In addition to smartphones and smart meters, we now hear about smart clothing and smart shoes, smart lights, smart homes, smart buildings, and every trendy city today has its smart city project. Just because it has a computer inside and is connected to the Web, does not mean it is smart.
Are you being paid enough? Do you want a better job? According to a recent survey Manpower released just before Engineers Week, employers and engineers don't see eye-to-eye about the state of US engineers' skills and experience.
More:Blogs|News
Design News Webinar Series
2/25/2015 11:00 a.m. California / 2:00 p.m. New York
12/11/2014 8:00 a.m. California / 11:00 a.m. New York
12/10/2014 8:00 a.m. California / 11:00 a.m. New York
11/19/2014 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.
Mar 9 - 13, Implementing Motor Control Designs with MCUs and FPGAs: An Introduction and Update
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  67


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

Sponsored Content

Technology Marketplace

Copyright © 2015 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service