[seijack]

Hello All,

I am using the high speed core rough toolpath to rough out some 3d part shoots. I posted the program and it is very very long. It has a ton of short little x y moves..i looked at the parameter page and the total tolerance is set to .001 inch total. What is a good tolerance for a rough core program. I finish the shoots with a surface finish parallel ball mill. That the tolerance is also
.001 inch. It seems to be ok.

Thanks in advance...

[dcutler35]

try using waterline i did the other day and it made my program smaller by 10 times and gave a better tool path you may have to tweak the entry and exit

[dcutler35]

.003 tolerance for a rough program

[Superman]

That parameter page has a pull-down in it
OFF
1:1
1:2
1:3

OFF=do NOT filter the screen toolpath when posting, or give XY code

-the other values allow the post to fit arcs ( ie replace the small XY moves with arcs that lie within the set tolerance band- if tolerance band is 0.002", & an arc can replace the XY points and stay within ±0.001" of the original path, it will) - you also have to allow arcs in XY plane ( lower section of that "Tolerance" dialoge box ). "Filter" works in the same way.

PS- XY ( or "point to point" ) code is also generated if the profile is a spline
- you have to simplify a spline into 1 (or more arcs - break into smaller lengths before simplifing ) to be able to "Filter" the XY code into arcs.

[seijack]

Thanks Guys, I did change the tolerance to .003 and it helped. Superman I did not see the settings that you mentioned off, 1:1 etc on the arc/tolerance page

[CThomas715]

In X5, and I believe X6, on the arc filter/tolerance page the choices are in the "Filter Ratio" drop down. Off is default

[Rstewart]

When Roughing a part I always bump up the tolerance as much as possible.

My settings depend on how much stock you are leaving for the finish pass.
Usually 2:1 ratio on the filter also.

If I'm leaving .02" for finish I will bump my Cut tolerance up to about .006" or .007" This lets the machine run smoother and faster with less code.

[seijack]

Ureka...I did finally find the arc filter that was mentioned earlyier in this post. It is in the SURFACE ROUGH and SURFACE FINISH tool paths. What I am using is the SURFACE HIGH SPEED toolpaths which the options are a bit different.I opted to use the smoothing options so the options are different still.

[NW_Phil]

opti core one of my favs ya do .003 for roughing shortens the program length and runs quicker. upcut rocks too. waterline works wonders if u add cuts and set your stepover u may have to isolate some sections of the part depending on the angle or rad your cutting to help speed it up otherwise it runs a bunch of smaller z moves around the whole wall when/if you have straighter drops. and for finishing i usually use a 2:1 ratio for everything unless its a tight tolerance. good looking arcs then

[cadcam]

you are safe to use up to 1/3 the tollorence of what you are using for stock left. you loosen it up to much and you may over cut in some places.