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David laser scanner and reverse engineering

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Re: David laser scanner and reverse engineering

Postby micr0 » Fri Jul 31, 2015 4:22 pm

Nice work. You make it look simple. :D

A question about your work flow.
After you have a part scanned and aligned what is the first thing you do to the fusion result mesh before trying to bring it in to Solidworks? I know you are using Geomagic studio first. Are you re-topologising the mesh or just decimating to reduce it's size?
I'm producing huge scan files and am not really sure about the best way to proceed.

thanks
µ
µ
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Re: David laser scanner and reverse engineering

Postby NARMELLA » Fri Jul 31, 2015 9:51 pm

micr0 wrote:Nice work. You make it look simple. :D

A question about your work flow.
After you have a part scanned and aligned what is the first thing you do to the fusion result mesh before trying to bring it in to Solidworks? I know you are using Geomagic studio first. Are you re-topologising the mesh or just decimating to reduce it's size?
I'm producing huge scan files and am not really sure about the best way to proceed.

thanks
µ


Hi micr0,

As you know it varies according to the geometry of scanned part.
But as usual in geomagic studio :

1- Aligning to the main coordinate system.
2- Using decimate command
and some others depending to the geometry of scanned parts

REV_010.png


NARMELLA
Data projector : NEC VE 281
Camera(s) : Canon eos 600D (3x)
Software : Lets scan 2.5 + David laser scanner 3.9
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Re: David laser scanner and reverse engineering

Postby sdiguana » Fri Aug 07, 2015 9:35 pm

Narmella,

Can you give some time estimates of how long it takes to complete a part? E.g. say your shovel head... 1 hr to scan and 3 hrs to post process into a parametric model?

I am thinking of doing an Engine/Trans/Diff on a classic car and was thinking I'd scan things as I dismantle the car I'd scan it to have a full cad model of the car for building brackets on this project, and for doing future projects. But that is a function of hours invested whether I would do so or not.
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Re: David laser scanner and reverse engineering

Postby NARMELLA » Sun Aug 09, 2015 7:02 pm

sdiguana wrote:Narmella,

Can you give some time estimates of how long it takes to complete a part? E.g. say your shovel head... 1 hr to scan and 3 hrs to post process into a parametric model?

I am thinking of doing an Engine/Trans/Diff on a classic car and was thinking I'd scan things as I dismantle the car I'd scan it to have a full cad model of the car for building brackets on this project, and for doing future projects. But that is a function of hours invested whether I would do so or not.


It is not so easy to answer this question :wink:

Lots of possibilities !

In total :
If we divide it to three sections ( Scanning + Preparing + Modeling ) ;
Scanning = 30 %
Preparing = 5 %
Modeling = 65 %

For me , it is not important that how long may it take ;
This is a part of my occupation and the main parameter is to have enough precision .

NARMELLA
Data projector : NEC VE 281
Camera(s) : Canon eos 600D (3x)
Software : Lets scan 2.5 + David laser scanner 3.9
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Re: David laser scanner and reverse engineering

Postby sdiguana » Fri Aug 14, 2015 11:21 pm

Hi Narmella,

For me, it would be for a hobby, and I am essentially trying to weigh the cost of taking it on. If I had to invest 2000 hrs to scan all the bodywork, frame & major assemblies in my car plus a few dozen details, id do it. If i have to spend 20,000 hrs... I'll throw this on the backburner for another 5 years until scanning/post-processing becomes further automated.

The reason i ask the specific item (e.g. shovel head or handle) is then I can estimate a level of effort for a part that has that amount of complexity. I do engineering/CAD work in my day job, so seeing a number against a specific item has a reasonable bit of meaning for me. Since some of the items I plan on reversing / modifying are mechanical assemblies, they require fairly tight tolerances, probably reasonably comparable to your level of detail in work.

Even as simple as 9 scans at 5 mins each, i can ratio that into your percentages. Not having used david before, i dont know how long even one scan takes.

cheers,
iguana
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Re: David laser scanner and reverse engineering

Postby NARMELLA » Sat Aug 15, 2015 4:24 pm

Hi Iguana,

Here are some samples :

Software :
Scanning : David laser scanner
Preparing : Geomagic studio
Modeling : Solidworks

CALC001.jpg

CALC02.jpg

CALC003.jpg
Data projector : NEC VE 281
Camera(s) : Canon eos 600D (3x)
Software : Lets scan 2.5 + David laser scanner 3.9
گشتاور صنعت تبریز
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Re: David laser scanner and reverse engineering

Postby NARMELLA » Sat Aug 15, 2015 4:25 pm

CALC004.jpg

CALC005.jpg


Good luck
NARMELLA
Data projector : NEC VE 281
Camera(s) : Canon eos 600D (3x)
Software : Lets scan 2.5 + David laser scanner 3.9
گشتاور صنعت تبریز
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Re: David laser scanner and reverse engineering

Postby sdiguana » Sat Aug 15, 2015 9:23 pm

Narmella,

That is above and beyond, thanks so much! I think i need to scale back what my goals are a bit, but its still within reach of getting David and doing some of the scans/mods I wanted to do.

Thanks again!

iguana
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Re: David laser scanner and reverse engineering

Postby dklassen » Sat Aug 29, 2015 7:08 pm

NARMELLA,

You do very nice work indeed. I just started exploring reverse engineering and finding it a bit of a learning curve especially given I'm not a CAD guy. I have ViaCad 9 Pro, DesignSpark and a couple others but I'm finding it challenging. I'd really love to have Geomagic Design but just need to decide when I can cough up the money.
Acer Aspire V15 laptop w/ 8g ram / Windows 10, Acer K132, DFK 42BUC03, Computar Megapixel 2/3 12mm, David 4.0, V-Slot 1000x20x40 linear rail, Cam and Projector mounts by JDM Dyno.
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Re: David laser scanner and reverse engineering

Postby hunkatibor2 » Sat Aug 29, 2015 11:07 pm

Hi
I also worked in a job.
Tibor
Attachments
2015-08-29_17-18-58.png
2015-08-29_17-19-04.png
2015-08-29_17-42-09.png
Intel Xeon E5410 2.33GHZ 16GB RAM Windows 7 64bit David 4.5.0
2 Basler A622F camera 2 Tamron Asfirical AF 28-80mm lense
LG DLP Projector PF1500G Canon D40 Tokina 17-70mm 1:2.8-4,5
Humanti Calibration panel system and Alignmed&Two camera
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Re: David laser scanner and reverse engineering

Postby NARMELLA » Mon Sep 07, 2015 12:41 pm

How to create a parametric model from a scan file

Part one : How to Choose 3D Point-Cloud Processing Software

HTO001.jpg

HTO002.jpg


Here in this link you will find some information about it

Link to part 1
Link to part 2

NARMELLA
Data projector : NEC VE 281
Camera(s) : Canon eos 600D (3x)
Software : Lets scan 2.5 + David laser scanner 3.9
گشتاور صنعت تبریز
User avatar
NARMELLA
 
Posts: 354
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Re: David laser scanner and reverse engineering

Postby hunkatibor2 » Mon Sep 07, 2015 2:43 pm

Hi Marnella
I walkable me a 90-day trip through the five Rhinoceros version of the solution. The price does not rise during this search, and I put up pictures how I go.
Tibor :D :D :D
Intel Xeon E5410 2.33GHZ 16GB RAM Windows 7 64bit David 4.5.0
2 Basler A622F camera 2 Tamron Asfirical AF 28-80mm lense
LG DLP Projector PF1500G Canon D40 Tokina 17-70mm 1:2.8-4,5
Humanti Calibration panel system and Alignmed&Two camera
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Re: David laser scanner and reverse engineering

Postby dklassen » Tue Sep 08, 2015 3:49 am

VRMesh Reverse looks interesting.
Acer Aspire V15 laptop w/ 8g ram / Windows 10, Acer K132, DFK 42BUC03, Computar Megapixel 2/3 12mm, David 4.0, V-Slot 1000x20x40 linear rail, Cam and Projector mounts by JDM Dyno.
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Re: David laser scanner and reverse engineering

Postby Tijs » Wed Sep 09, 2015 8:24 am

Interesting links. Is there anyone here who has expierence with INstep?
https://www.solveering.com/instep.htm
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Re: David laser scanner and reverse engineering

Postby NARMELLA » Wed Sep 09, 2015 3:52 pm

How to create a parametric model from a scan file

Part two : How long it takes to prepare a scan file

I asked some of my friends to do the preparation process for this piece by using their own softwares.

The part has scanned by using david laser scanner.

REV_014.png
Data projector : NEC VE 281
Camera(s) : Canon eos 600D (3x)
Software : Lets scan 2.5 + David laser scanner 3.9
گشتاور صنعت تبریز
User avatar
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