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Mach3 doing something different from f360 simulation on ellipse

matt.petrie
Contributor

Mach3 doing something different from f360 simulation on ellipse

matt.petrie
Contributor
Contributor

Hi, I've been trying to make a ellipse shape bread board. I've drawn it in f360 - simple sketch, 2 ellipses. extrude the outside one, the inside one being for the groove. Then in manufacture I do a project for the groove - this is fine. For the outside I just do a 2d contour for a 10mm straight bit. This looks fine and runs fine on the simulation. However when I open the file in mach3 i can see a couple of circles in the board so it cuts the outline and also cuts in the 2semi circles. Unfortunately I didn't see this until i'd actually cut it out. 

Is there a bug that anyone is aware of? Should I be aiming this question on a mach3 forum? I have tried in manufacture to delete the contour and redo - same issue. I've then done a drawing from scratch and i'm still getting the same issue. It's not the lead in - this is outside the contour and in a different position. The 2 holes are just below centre on the ellipse and symmetrical in position - any help much appreciated

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Anonymous
Not applicable

try to disable lead-in and lead-out arcs in linking tab (set them 0 or better uncheck all lead params)

or uncheck smoothing

then look, how it works now in mach3

 

also mach3 have a simulate pass function in 3rd tab from left

 

if issue remains then try to adjust arc parametrs in postprocessor dialog

 

try to change : radius arcs,allow helical moves,maximum circ radius, minimum circ radius

 

 

if it not works you can check end edit your toolpath with cimco edit or similiar cnc editor

 

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matt.petrie
Contributor
Contributor

Hi, thanks for the quick response. I've given that a try, but still to no avail. I've attached a pic to show what was actually cut out, not sure if this helps? The holes are much larger than the lead in/out on the leftIMG_0313.jpg

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matt.petrie
Contributor
Contributor

Thanks jonny, smoothing was not ticked - i ticked and changed to 0.0001 and all looks like it will work now - i'm going to go and try now

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Anonymous
Not applicable
Accepted solution

looks like that there is a g41 g42 radius comp in your code

maybe problem in it

attache fusion file

look on it later

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matt.petrie
Contributor
Contributor

many thanks, here's the old file - actually it doesn't seem to allow me to add the attachment

 

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