How to digitize engine cylinder head combustion chambers?

[compfast]

Hi I have a Bridgeport Interact Mill that I did a Centroid Allin1DC conversion couple of years ago. The mill is fantastic! although I use it for simple 2D stuff such as car/motorcycle gear levers, engine plates etc. I use Fusion 360 CADCAM at a basic level. I would like to get into digitizing such as combustion chambers. Been looking at the DP-4 probe. I believe I will need to upgrade my CNC-12 ? I presume the probe will give me some form of point cloud file which would need processing in some way to ultimately convert to a CAD image to generate a tool path. I realise I have a lot of learning to do but any pointers would be greatly appreciated. Thank You Phil (UK)

[suntravel]

Fusion can not work with point clouds, I am using Rhino to generate a 3D model from point clouds and do the CAM in fusion.

Uwe

[cnckeith]

sample combustion chamber point cloud data attached. this was generated using the centroid radial digitizing cycle (this just one way of doing it)
Notes:

; Below is the Digitizing setup data that was used to digitize this Toyota 20R combustion chamber
; containment radius = 1.8750
; contour step = 0.0200
; z patch length = -1.0000
; z step = 0.0200
; full or partial = 0
; start angle = 0.0000
; end angle = 360.0000
; clearance height = 0.0100
; replay pattern = 0
; filename = 20R

this is what it looks like

the g code version of this same data is included with all CNC12 Mill installations the file name is "sample_20r.dig"

[compfast]

cnckeith Thanks for the info. My version of CNC12 is v 414 installed 2019. Cant find the sample file ?
There is good reference to Digitising in section 8 of the manual which refers to menu option that I dont have so presumably along with say the DP-4 probe I need a CNC12 or digitising software upgrade? However what I need to do is to replicate the head profile in CAD so I can edit if need be from which I can generate tool path. This does not seem easy to do in Fusion 360?? Phil

[tblough]

Centroid's digitizing routines generate a g-code compatible code directly on the control. As long as you digitize with a probe the same diameter as the cutter you use to finish, no further processing needs to be done.

CNC12 can also output a point cloud (without the g-codes). It is extremely difficult and time consuming to convert this cloud into editable CAD geometry. F360 does not work with point clouds. SolidWorks Pro can import them, as can Blender and Maya. You are better off sending the cloud data to a service to convert into surfaces.

[suntravel]

It is easy with Rhino:

viewtopic.php?f=66&t=9429&p=81434&hilit=Rhino#p81434

Uwe

[compfast]

Many thanks for the advice. I will try Rhino. Presumably you can get this for a trial period ?

[suntravel]

Yes 90 day trial perid:

https://www.rhino3d.com/

Uwe