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#1 2010-03-31 11:16:48

sae
Member
From: Sweden
Registered: 2005-04-26
Posts: 20

Optipath plungemilling

Hi!
Anyone know how to optimize plungemilling( volume removal )
or is this impossible ?

Regards/sae

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#2 2010-07-26 07:05:55

paehv
Senior Member
From: Eindhoven, Netherlands
Registered: 2005-01-17
Posts: 167
Website

Re: Optipath plungemilling

Optipath will NOT optimize cycles, so if you make sure that the plunge motion is written as normal G1/G0's or GOTO's optimizing shouldn't be a problem.


Patrick Delisse
KMWE Aerospacehttps://www.kmwe.com
(Vericut V9.5, Siemens NX2206, Campost)

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#3 2010-08-16 07:26:28

sae
Member
From: Sweden
Registered: 2005-04-26
Posts: 20

Re: Optipath plungemilling

No cycles , it's only G1 G0 , radial cut width is changing but feedrate
is not changing when running Optipath , maybe i missing something here ?

Regards/sae

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#4 2010-08-31 05:53:44

paehv
Senior Member
From: Eindhoven, Netherlands
Registered: 2005-01-17
Posts: 167
Website

Re: Optipath plungemilling

Be sure that the setting "Add more cuts" is checked. Usually a plunge motion is 1 G1 going down. When option "Modify existing cuts only" is checked, Optipath will not adjust anything on this one line motion. Add More cuts allows optipath to divide this motion into several portions (See "resolution") all with their own feedrate.
[attachment=0:22yy7ov9]<!-- ia0 -->vericut-optipath.JPG<!-- ia0 -->[/attachment:22yy7ov9]


Patrick Delisse
KMWE Aerospacehttps://www.kmwe.com
(Vericut V9.5, Siemens NX2206, Campost)

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#5 2010-09-01 22:43:36

BillH
VERICUT Specialist
From: Irvine, CA
Registered: 2004-10-08
Posts: 146
Website

Re: Optipath plungemilling

Optipath has no optimization method for plunge (parallel to tool axis) milling.

Optipath looks at the radial and axial engagement during the cutter's motion along the path trajectory. Axial engagement is meaningless for motion along the tool axis. It could be argued that radial engagement is meaningless too, or at least poorly defined or insufficient for determining feed rates. One function of axial and radial engagement is the contact area, which produces a volume removal rate. Another is its effect on feed-per-tooth, also known as chip thinning. Both of these are used when OptiPath calculates feed rates.

While volume removal rate may have some effect on plunge cuts, it seems chip thinning is undefined, at least in the conventional sense. Probably more important is the cutter's design for plunge cuts (tooth rake, chip clearance, web thickness, etc) and how close or far the material contact is from the cutter's center.

We've not really seen a simple and proven method to determine feed rate for a plunge cut, given various contact scenarios and tool designs. Of course we're open to learn and if you have some good information, or know of some useful reference materials, please post it here and we'll take a look. It could be a nice addition to OptiPath's abilities.

Thanks for starting this discussion on the forum.
Bill

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