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rcordova10-Marble
10-Marble
June 10, 2015
Solved

Can Creo machine a helix bore?

  • June 10, 2015
  • 5 replies
  • 5293 views


Anybody out there know to do a helix bore tool path in Creo?  I want to use a high speed machining to rough out a large bore.


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Best answer by SteveLucas

Rick,

What version of Creo are you on? You can do a helix cut in a bore with trajectory milling.There are a couple of nice improvements in the latest build of Creo 3.0 M040 where you can set the helical cut depth right from the trajectory tab.

5 replies

S
SteveLucas1-VisitorAnswer
1-Visitor
June 10, 2015

Rick,

What version of Creo are you on? You can do a helix cut in a bore with trajectory milling.There are a couple of nice improvements in the latest build of Creo 3.0 M040 where you can set the helical cut depth right from the trajectory tab.

R
rcordova10-MarbleAuthor
10-Marble
June 10, 2015

Steve, I'm using Creo 2.0 M120.

I'm need to cut a 2.87" bore about 2.75" deep (thru hole).  Normally we would use a large insert drill to hog out the material then chase it with a boring bar but my machine has limits when pushing a large drill through 316L SS.
My tool vendor is suggesting I try their high-feed end mill in a helical motion to hog out material.

Can you provide a little more detail on how to setup a trajectory milling sequence?

I use custom trajectory milling sequences in programs now.

S
SteveLucas1-Visitor
1-Visitor
June 10, 2015

Rick,

Not sure I can help you it's been a while since creo 2.0 and I am having a serious lapse in memory on how to helical mill in creo 2.

I know it can be done if you give me a while so I can look up some stuff in my archives when I get a minute free  I will send it to you or if some one else can help please feel free to jump in.

Steve

Patriot_1776
Patriot_177622-Sapphire II
22-Sapphire II
June 10, 2015

Not sure what you mean by "helix bore" tool path.  Do you mean for the "bore" of a firearm or heavy gun?  If so, you could easily use a VSS (Variable Section Sweep).

KenFarley
KenFarley21-Topaz II
21-Topaz II
June 10, 2015

Frank,

He's trying to define a toolpath to move a cutting tool along a helical path. The variable section sweep is to create a feature, but doesn't really apply to toolpath creation. Unless, of course, you are trying the cut the resulting geometry. Egads.

Patriot_1776
Patriot_177622-Sapphire II
22-Sapphire II
June 10, 2015

Right.....but isn't the toolpath derived from the geometry created by the designer?

The problems I've had with helical or swept cuts, is that it doesn't actually remove material like a rotary cutter would, you're just sweeping a 2D section.

That is one area where Solidworks has an edge, the ability to remove material using solid bodies......

E
EricVidra1-Visitor
1-Visitor
June 10, 2015

couple of tutorials on Learning Exchange....

Tutorial: Helical 3-Axis Trajectory‌

Tutorial: Helical Machining of Complex Holes in Cutline Milling

R
rcordova10-MarbleAuthor
10-Marble
June 10, 2015

Thanks

R
rcordova10-MarbleAuthor
10-Marble
June 11, 2015

Thank you to all who responded to my post.  I appreciate the quick replies too.

R
razmosis13-Aquamarine
13-Aquamarine
June 15, 2015

I would use an extruded mill surface and cutline milling vs. trajectory milling.  The only issue I have with it is that occasionally it doesn't make a constant Z swipe at the bottom to complete the hole's bottom.  More often than not, it works fine.

S
SteveLucas1-Visitor
1-Visitor
June 15, 2015

Matt,

It is a matter of preference as far as cutline vs. trajectory. I prefer the trajectory method because I don't have to make an extruded mill surface and I can set the depth of my trajectory cut with a plane that goes deeper than the bore if it is through the part which is nice for a drift pass to get beyond the used cut portion of an end mill.

Steve

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