CNC porting
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Joined: May 2001
Posts: 82
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From: Trollhattan,Sweden
CNC porting
I have the opportunity to make the CNC job for free. My friend is a very skilled toolmaker with excellent equipment, but has no experience in head porting. Is there someone who has done this, written programs for head porting? (Way out, am I...)
Burning Brakes
Joined: Dec 2000
Posts: 1,023
Likes: 0
From: Marietta, South Carolina, USA
Re: CNC porting (tapper)
I have not done it but I know you dont write any program for that you have to port a intake and exhaust like you want it then you have the CNC machine log how it is done and then you have to copy that info so it will do it to the other intakes and exhaust.
Then you have to try it and hope that everything is ok.
Then you have to try it and hope that everything is ok.
Drifting
Joined: Feb 2002
Posts: 1,952
Likes: 2
From: Little Rock Arkansas
Re: CNC porting (MrJay)
Does your friend have a 5-axis CNC machine? Because in order to do ports that is what is required... My company is currently looking at Haas Automation 5-axis machines for this exact purpose so I have pretty decent knowledge on what it takes. First you need to have a EXCELLENT head porter do one intake port and then one exhaust port; if you have someone that has no experience with porting heads or someone that has no flowbench you need to stay away from. It is very easy to screw up a port, bigger isn't always better and it's best to have someone who knows what they're doing do it for you. After you have your two ports hand worked then you must plot the ports and chambers. Unfortunately this can't be done with simple measurements like typical 3-axis CNC uses; it must be digitized. A special digitizer is placed in the toolhead of the CNC machine and it follows the contours and makes a "map" of the port; from here the map is saved to the machine and it is able to duplicate it with a cutter. There are so many contours to a cylinder head that it has to be digitized to be reproduced.
-Jeb
-Jeb
Former Vendor
Joined: Jun 2001
Posts: 7,204
Likes: 6
From: St Marys PA
Re: CNC porting (jburnett)
Does your friend have a 5-axis CNC machine? Because in order to do ports that is what is required... My company is currently looking at Haas Automation 5-axis machines for this exact purpose so I have pretty decent knowledge on what it takes. First you need to have a EXCELLENT head porter do one intake port and then one exhaust port; if you have someone that has no experience with porting heads or someone that has no flowbench you need to stay away from. It is very easy to screw up a port, bigger isn't always better and it's best to have someone who knows what they're doing do it for you. After you have your two ports hand worked then you must plot the ports and chambers. Unfortunately this can't be done with simple measurements like typical 3-axis CNC uses; it must be digitized. A special digitizer is placed in the toolhead of the CNC machine and it follows the contours and makes a "map" of the port; from here the map is saved to the machine and it is able to duplicate it with a cutter. There are so many contours to a cylinder head that it has to be digitized to be reproduced.
-Jeb
-Jeb
