Dear John,
If you read the end of my message, I spoke about direct duplication through
layer-by-layer technologies or CNC machining.
my contribution was just to comment some ideas for the futur, about
obtention time for a copy of a physical object.
Of course, I know about reverse engineering and many applications in these
fields. But, it is very difficult to give a survey of this domain by just a
few words...
Best regards,
Prof. A. BERNARD
A 11:03 06/05/98 +0100, vous avez écrit :
>Prof . Bernard
>
>We dont always need scanning and part duplication.
>The first step is always - look at the job and simplify it - if you can
>measure it with a vernier - use a vernier. If you want to simply duplicate
>an item CAT scan it - pass it through Magics and build on an sla, fdm, lom,
>sanders etc. Whilst RE is used to duplicate some items, it is usually used
>as the basis of something new.
>
>Best Regards
>
>John Wright
>Response Associates Ltd.
>
>email: johnw@ra-ltd.co.uk
>
>Tel: 44 1747 822404
>Fax: 44 1747 822545
>-----Original Message-----
>From: Alain BERNARD <bernard@cran.u-nancy.fr>
>To: Volker Schillen <schillen@fzi.de>
>Cc: rp-ml@bart.lpt.fi <rp-ml@bart.lpt.fi>
>Date: 06 May 1998 08:57
>Subject: Re: Is there a defintion for Reverse Engineering?
>
>
>Dear Volker,
>
>I would like to propose the following :
>
>the way to go from physical to numerical model
>
>We need :
>- sensor (with support structure, numerical or manual) and softwares for
>filtering,adjustments, mapping,etc... (pixels, points, curves, polylines,
>etc...)
>- then : 3D modelling software (surface, volume, feature, etc...)
>- or : direct STL or ISO NC files for part manufacturing (very often you
>have to make offset of the surfaces you have scanned before STL generation.
>It depends on the case study. But for ISO NC files, it could be direct from
>scan to file generation. Some additionnal functions shoulb applied, like
>die lines modelling (using ruled surfaces for example obtained from point
>extention).
>
>An integrated software should do all these functions (like surfacer, CATIA
>Cloud, STRIM 100 RDS, ProScanTools, etc...).
>
>You need to define very carefully scanning strategies and the information
>you choose to scan in order to be efficient for 3D modelling. Very often,
>you have to scan some basic elements for general features modelling and
>high density point clouds for details definition or ergonomic or
>aerodynamic shapes definition.
>
>I think that reverse engineering should be the first step for 3D copy of an
>object in a futurist machine : you put your object at the entrance of the
>machine and you obtain a 3D physical copy of your object at the exit of the
>machine. We have already made such a process, but time and steps are a bit
>long (a few hours) and not yet compatible with the patience you should have
>waiting for your copy (like for paper copy, just a few seconds...)
>
>I hope these feelings should help.
>
>Best regards,
>
>Prof. A. BERNARD
>
>A 09:03 06/05/98 +0200, vous avez écrit :
>>Dear RP'ler
>>
>>I try to find a definition for "Reverse Engineering". What are the
>>necessary steps to do Reverse Engineering? Any suggestions?
>>
>>Regards,
>>
>>
>>Volker Schillen
>>
>>
>>Information Science Research Center at the University of Karlsruhe
>>
>>Mobility Management and Robotics Fon: ++49-721-9654-314
>>Haid-und-Neu-Str. 10-14 Fax: ++49-721-9654-309
>>D 76131 Karlsruhe (Germany) e-mail: schillen@fzi.de
>>
>>
>>Volker Schillen
>>
>> '''
>> (0-0)
>> +---oOO----(_)---------+
>> | email to: |
>> | schillen@fzi.de |
>> +----------------OOo---+
>> [__|__]
>> || ||
>> ooO Ooo
>>
>>For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/
>>
>------------------------------------------------------------------------
>Prof. Alain BERNARD Tel : + 33 (0)3 83 91 27 29
>Professeur des Universites + 33 (0)3 83 91 20 09
>CRAN ESA CNRS 7039 Fax : + 33 (0)3 83 91 23 90
>UHP Nancy I - ESIAL
>BP n° 239, 54506 - VANDOEUVRE Cedex - FRANCE
>ATTENTION ! NEW E-MAIL !
>e-mail : alain.bernard@cran.u-nancy.fr http://www.cran.u-nancy.fr
>------------------------------------------------------------------------
>
>For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/
>
>
------------------------------------------------------------------------
Prof. Alain BERNARD Tel : + 33 (0)3 83 91 27 29
Professeur des Universites + 33 (0)3 83 91 20 09
CRAN ESA CNRS 7039 Fax : + 33 (0)3 83 91 23 90
UHP Nancy I - ESIAL
BP n° 239, 54506 - VANDOEUVRE Cedex - FRANCE
ATTENTION ! NEW E-MAIL !
e-mail : alain.bernard@cran.u-nancy.fr http://www.cran.u-nancy.fr
------------------------------------------------------------------------
For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/
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