Newsgroup sci.engr.mech 26343

Directory

Subject: Question about Creep -- From: X@X.X (GX)
Subject: WTB: Structural Design Software -- From: X@X.X (GX)
Subject: aluminum on steel linear bearings? -- From: felice@pioneer.net (Felice Luftschein & Nicholas Carter)
Subject: HIGH SPEED RIP-OFF -- From: crosshar@ix.netcom.com(J.C. Vines)
Subject: Re: Locating logs underwater? -- From: alanh@widomaker.com (Alan Horowitz)
Subject: Re: PE Liability -- From: Sam
Subject: New MFGR Hyperlinks -- From: sarbrook@airmail.net (Lance Keene)
Subject: Assistance needed with o-ring problem -- From: jflester@phoenix.net (Jeff Lester)
Subject: Re: Human Powered Vehicles - looking for a news group -- From: Mike Eland
Subject: Re: mechanical design solid modeling -- From: zagz@ix.netcom.com(Ken Zagzebski )
Subject: Re: Locating logs underwater? -- From: allent@mnsinc.com (David Allen)
Subject: Re: Publishing Scholarly Work on the Web -- opinions? -- From: Chad English
Subject: Micro thermo sensor -- From: tcwynsen@ccgate.hac.com (Thomas Wynsen)
Subject: Re: mechanical design solid modeling -- From: Dean Taylor

Articles

Subject: Question about Creep
From: X@X.X (GX)
Date: 17 Sep 1996 03:26:18 GMT
I have been trying with little success to find data on mechanical creep
of various materials.  I am trying to identify a good material to use for
a spring, that must exhibit very little creep after the spring tension
is relieved.  Any help would be greatly appreciated.
Thanks, Greg Leyh
Return to Top
Subject: WTB: Structural Design Software
From: X@X.X (GX)
Date: 17 Sep 1996 03:19:24 GMT
I am looking for a structural design program such as RISA-3D or Multiframe.
Are there any good 'shareware' equivalents in existence?  
Alternatively, I am interested in buying an older copy of some commercial
software package.
-Greg Leyh
Return to Top
Subject: aluminum on steel linear bearings?
From: felice@pioneer.net (Felice Luftschein & Nicholas Carter)
Date: Tue, 17 Sep 1996 01:46:22 GMT
The two inexpensive machine tools (Taig, Sherline) use aluminum
linear bearings on dovetailed steel beds, with either bronze(Taig) or
plastic(Sherline) Gibs. Yet in none of the texts I have, can I find out
about the characteristics of Steel on Aluminum Linear Bearings.
Anyone know of any references??
Return to Top
Subject: HIGH SPEED RIP-OFF
From: crosshar@ix.netcom.com(J.C. Vines)
Date: 17 Sep 1996 00:14:10 GMT
Hello, my name is James C. Vines.
	 P.Bx.28504, San Jose, Ca. 95159
	e-mail Crosshar@ix.netcom.com		
	I am an independent  service support specialist, for dicing saws
and grinders in California.
	I would like to tell you a story of broken trust, with a company
named High Speed Technologies. Then I would like to hear your opinions,
if you are so inclined.	
	High Speed Technologies Inc. purport themselves to be a
professional, air bearing spindle repair facility. They have not
demonstrated this to me, by their actions.
	It started with a seized spindle motor, in a clients dicing saw, 
which  had to be removed for repair.
	Multiple warranty failures of my primary vendor caused the client
to loose faith and patience in the ability of that vendor, (and was
damaging  my relationship with this client, to the point of his
granting one last chan
ce, to repair this spindle permanently.) so I was forced to try a new
shop.  The name of this shop was HIGH SPEED TECHNOLOGIES, IN
MANCHESTER, NEW HAMPSHIRE.
	After explaining the critical situation to my contact there, (Mr.
Ron Girard, assured me that he clearly understood the gravity of the
job, and that there would be no second chance to get this right.) he
assured me that 
I could rely on High Speed as a professional company, with many years
of experience. He did not hesitate to accept the job under the
conditions as they were presented to him. He even  agreed to a 30 trial
period, as a sho
w of confidence in High Speed’s workmanship. (They already offered a
one year warranty, but this was not going to help the confidence of 
this customer. )
	A few days later, I got a call from the credit dept. of High
Speed, asking for credit information, for credit I did not ask for, nor
wished to apply for. When I declined, I just told them to send it
C.O.D. (So much for t
he 30 day trial period.) 
	I received the spindle a few days later, and installed it in
front of the anxious customer, (who’s saw had been down for four
months) After checking for air supply, and mechanical freedom, I
applied power from the machin
e, and..... nothing. It would not respond to power, which had never
been a problem before, even while seized.
	After I paid an outside shop for the spindle supply to be
diagnosed,  (No  problems.), the customer decided to call the factory
to fix the problem. The factory, Disco Hi-tec America, made the same
diagnosis.
The customer bought a new spindle from them, and the saw has been
running ever since.
	SO NOW, I AM OUT OF A GOOD CUSTOMER, AND I AM OUT THREE THOUSAND
DOLLARS FOR THE SPINDLE, PLUS SEVEN HUNDRED MORE FOR THE SUPPLY TO BE
DIAGNOSED, BECAUSE I COULDN’T BELIEVE THAT A REPUTABLE COMPANY WOULD
SEND ME A DEAD S
PINDLE UNIT. 
ALL THIS, BECAUSE Mr. GIRARDS BOSS, (LOU) SAID THEY DIDN’T GET A SECOND
CHANCE TO DO THE JOB RIGHT!
	He offered to replace the spindle, (Which the customer now
doesn’t  need, or want. ) He offered to credit me for a spindle job,
(That shouldn’t come out of my pocket, while waiting for the next
spindle job. ) So they jus
t refuse to refund the money that I trusted them for, on a C.O.D.
basis.
	Do you think this is fair and professional treatment??  I am a
hard working, self employed, individual. I am  financially repairing my
customer, while this out of state corporate deadbeat,  feels that 3
thousand dollars 
is more important than their reputation in the market place, and more
important than the satisfaction, and repeat business of their
customers.
	Am I the bad guy here, (as Lou told me I was ,before I hung up on
him?) 
	I welcome your opinions.
Return to Top
Subject: Re: Locating logs underwater?
From: alanh@widomaker.com (Alan Horowitz)
Date: 16 Sep 1996 21:29:38 -0400
They are doing this right now in one of the great lakes to recover the
old-growth logs that were lost during transport during the 1910's. The
cold water has preserved them perfectly asnd they are worth lots and lots
of money. I think I heard about it on National 
Public Radio - ask them.
Return to Top
Subject: Re: PE Liability
From: Sam
Date: 17 Sep 1996 03:31:20 GMT
This is an interesting topic, as I am about to graduate in mechanical
engineering.  This raises some questions and comments that I have.  (We just
finished a 2 week session on P.L. in Mechanical Systems Design class).
Don't most companies' insurance policies usually cover employees even if they
have a PE?
Also, most of the PL cases in the US involve 'strict liability'.  What this
means is that the only thing that need to be proved is a faulty product and not
negligence on the part of the engineer.  There are two results from this.
#1 - Most companies take responsibility for thier products.
#2 - Most people suing will sue with the 'deep pocket' theory.  Or, sue anyone
that can pay-up.  Most don't care about the engineer.  Except in the case of
gross negligence.
--Sam Brandt
Return to Top
Subject: New MFGR Hyperlinks
From: sarbrook@airmail.net (Lance Keene)
Date: Tue, 17 Sep 1996 03:58:36 GMT
WE DID IT!
We've finally finished the second pass at our Packaging and
Manufacturing Resource page.  Come check out Sarbrook's site and see
all of the exciting links to places of interest to people in
manufacturing at http://www.sarbrook.com   If you don't see your
company listed, just click on Add URL and we'll add a link to you for
free!
By the way,  what is the state of your manufacturing document control
system?  You don't have one?  Are you still doing them in a word
processor?  There is a better way.
The Sarbrook Co., Inc. provides turn key solutions to managing
Packaging or Manufacturing specifications.  Sarbrook will spend time
with your staff to determine the types of information that need to be
managed. Then Sarbrook will custom configure our WinSPEX product to
exactly meet your business needs. We will then install it at your site
and train your people. 
 WinSPEX is a manufacturing information control system designed to
manage packaging specifications, bills of material, raw material
specs, standard operating procedures, label artwork, CAD drawings and
several other document types. The system runs on a network so authors,
engineers, approvers and general users can have access to
specifications and all of their associated documents. There is
electronic approval & routing and history. The data is kept in
industry standard databases (Paradox, Oracle or Sybase) so third party
tools (such as Crystal Reports) can be used to access the data. The
product is ideal for manufactures that have a diverse product line and
a need to track large amounts of product information. Industries that
use WinSPEX are: Pharmaceuticals, Food Companies, Automotive,
Chemical, Cosmetics and Consumer goods. 
For more information, call 1-800-875-5105 or go to our site directly
at http://www.sarbrook.com to see a detailed description (with lots of
screen capture examples) of our product line.
Return to Top
Subject: Assistance needed with o-ring problem
From: jflester@phoenix.net (Jeff Lester)
Date: Tue, 17 Sep 1996 03:38:14 GMT
I have an o-ring problem.  I have a radially compressed
o-ring with a 5/16" cross section diameter.  The joint
is a static one sealing primarily air.  The operating temp
is approximately 300 degF and operating pressure is
90 psig.  The o-ring is also exposed to water and small
concentrations of anhydrous ammonia.
Any ideas on material...?  What would the recommended
gland dimensions be?
Any assistance would be appreciated.
Sincerely,
Jeff Lester
Return to Top
Subject: Re: Human Powered Vehicles - looking for a news group
From: Mike Eland
Date: Mon, 16 Sep 1996 21:29:43 -0600
cruberg wrote:
> 
> I'm interested in human powered vehicles (planes, bikes, cars, etc).
> Are there any active groups on this topic...thanks in advance..Chris.
The International Human Powered Vehicle Association (IHPVA) has a web
page
at http://www.ihpva.org
Mike
Return to Top
Subject: Re: mechanical design solid modeling
From: zagz@ix.netcom.com(Ken Zagzebski )
Date: 17 Sep 1996 04:49:54 GMT
In <323CBFA0.477A@monte.net> LONNIE FLICKINGER 
writes: 
>
>what is the best mechanical solid modeling/drafting package
>available without spending a mint?
You might want to take a look at Solidworks for $4000.  That is what I
have recommended to my management.
Ken Z.
Return to Top
Subject: Re: Locating logs underwater?
From: allent@mnsinc.com (David Allen)
Date: Tue, 17 Sep 1996 04:46:04 GMT
alanh@widomaker.com (Alan Horowitz) wrote:
>They are doing this right now in one of the great lakes to recover the
>old-growth logs that were lost during transport during the 1910's. The
>cold water has preserved them perfectly asnd they are worth lots and lots
>of money. I think I heard about it on National 
>Public Radio - ask them.
They copped the story from a piece in the Washington Post travel
section, maybe 4-6 weeks ago.
Return to Top
Subject: Re: Publishing Scholarly Work on the Web -- opinions?
From: Chad English
Date: Mon, 16 Sep 1996 16:00:51 -0400
Kirk Kerekes wrote:
> Are all printed books readily available? No. Have some been lost forever?
> Yes. Does that mean that we should go back to memorization and
> calligraphy? I don't think so -- there is much better redundancy with
> printing, resulting in a higher percentage of survival.
> 
> Apply the same logic to printed matter VS the web -- redundancy leads to
> survival, and good stuff tends to get duplicated quickly on the net.
Agreed.  But that's not quite the issue I was bringing up.  A conference and a
journal issue are events that occur in time.  Even with a medium change, you
can (hopefully) find information from either of those by referencing the
event.  Using a URL is like referencing the library, not the event.  If the
URL is permanently associated with the paper, which doesn't make sense down
the road when things change (URL's change, storage mediums change), then it's
not a problem.  I was just looking for a way to permanently reference the
paper.  Perhaps if we approached the archive as a series of journals, give it
a permanent name, etc, and then use the dates, it may be better.
> How many 50-year-old academic papers have you _directly_ referenced?
Well, I can think of at least 2 greater than 50, and quite a few in the 25-30
years ago range, from my Master's thesis alone.  Some fundamental works will
be referenced for quite some time.
--
    ("`-''-/").___..--''"`-._         
     `6_ 6  )   `-.  (     ).`-.__.`)  Chad English
     (_Y_.)'  ._   )  `._ `. ``-..-'  cenglish@mae.carleton.ca
   _..`--'_..-_/  /--'_.' ,'       http://www.mae.carleton.ca/~cenglish
  (il).-''  (li).'  ((!.-'
Return to Top
Subject: Micro thermo sensor
From: tcwynsen@ccgate.hac.com (Thomas Wynsen)
Date: Mon, 16 Sep 1996 13:02:25 -0800
I am looking for a micro sensor on the magnitude of .3 in x .3 in x .3 in.
or smaller to attach to a circuit board.  The inside of the board are very
confining thus the need for a very small component.  I need it to turn off
or on between -55 C and 0 C. Any help would be greatly appreciated.
tcwynsen@ccgate.hac.com
Return to Top
Subject: Re: mechanical design solid modeling
From: Dean Taylor
Date: Tue, 17 Sep 1996 08:19:35 +0200
I believe that most manufacturing workers are "capitalized" at
6 times annual salary.  That is, the capital equipment provided 
so that they can do their jobs.  Even if you provide your designer
with only 3 times annual salary, you will see that you can choose
your CAD package based on features and productivity and not cost.
Return to Top

Downloaded by WWW Programs
Byron Palmer