3D PARAMETRIC SPLINE

[Michael Reynolds]

Hi again all! I was reading a thread about breaking up g1 x,y & z moves into g2/3 moves, which would severly cut down program lengths.

My partner and I are working on a fly fishing reel as a class project in one of the cnc courses, and one of the assy parts has 4 helical contours (used the thelix c-hook). It could be programed by using g2/3 xyzijk, but mcam spits it out as a &*()*) load of xyz moves. I tried the filter/create arcs, but when I reposted, it didn't change. It's at the bottom of the following web page..

http://cadfree.corning-cc.edu/~reynolds/mastercam_parts.htm

Any ideas?

Thanks all!

Mike R.

[gstephens]

I dont think that filter creates helixes. I'm not sure whether or not Northwood's filter does either. The only way you could get that toolpath out of Mastercam would be to do a contour ramp around the circle.

 

[Michael Reynolds]

How is that done? And can it do multiple depths of cut?

Thanks fer gittin back to me!!

Mike R.

[BernieT]

Mike,

gstevens suggested probably the best way - use contour-ramp. I was also able to do it with 'pocket - helix entry'. In both cases though you end up with an extra circular toolpath at the bottom that has to be hand edited out.

BerTau

(I am sending an e-mail that shows a sample of both toolpaths)

[cadcam]

Bertau you are were in Newbery park?

What Company do you work for if i may ask..

Cadcam is vary curues can't you tell.

thanks

------------------

jay/ aka cadcam

Precision Programming

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Predator reseller

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[This message has been edited by cadcam (edited 06-08-2001).]

[CycleTimeCharles]

Another way is to contour an arc and using change at a point in the chain manager change the ending Z value

Thanks to Jay you can get the a sample file here called Arcramp.zip:

ftp://[email protected]/Mastercam%20forum/

PS: beacuse of a space in the directory on the ftp site you cannot douple-click on the file to download, Right click and specify "Copy to Folder..."

[This message has been edited by CycleTimeCharles (edited 06-08-2001).]

[BernieT]

""Bertau you are were in Newbery park?""

Cadcam - I'm about one mile due west of Cad Cam Consulting's offices. On Old Conejo Rd just across the 101 fwy. Wilson Sporting Goods has a 5 person prototype mold shop and machine shop for golf club research. (also,we are just starting to make some prototype tennis racquet molds for the tennis dept.)

Great place to work!!

BerTau

 

[cadcam]

Hey thats great someone local.

i take it those folks at Cad-Cam are your dealer?

Is chris your contact?

thanks for replying back.

------------------

jay/ aka cadcam

Precision Programming

cnc programming &

Predator reseller

email: [email protected]

web: www.ppcadcam.com

Mastercam forum FTP free file support

ftp://www.ppcadcam.com

User: mastercam

Pass: forum

[BernieT]

Yes

[Michael Reynolds]

Hi again. Bertau, I tried to find a way to get the countour "ramp" selectable, but it wasn't happenen'. Is it because it's a 3d curve? If i just create a flat 2d circle, then break it into 4 arcs, it becomes selectable, but that would mean I'd have to do 4 tool paths? Zaat right?

Thanks all!!!!

Mike R.

[BernieT]

Mike,

Yep, that's right.

Also try Cycle Time Charlie's method, it looks like that might be the easiest way yet.

BerTau

[Michael Reynolds]

Coooooooolll....You peoples is my new best freinds!

Thanks for all your help!

Mike R.

[cadcam]

Ok i didnt know that one eather and that is great.

good going cycletime.

------------------

jay/ aka cadcam

Precision Programming

cnc programming &

Predator reseller

email: [email protected]

web: www.ppcadcam.com

Mastercam forum FTP free file support

ftp://www.ppcadcam.com

User: mastercam

Pass: forum