HELIX BORE

[LFP]

I am having an issue with this toolpath. I am mill boring a .975" hole with a .750" end mill. At the bottom of the hole the tool does a loop around the arc and for about 1/4 of the arc the tool feeds about .010" into the wall. Below is the last few bits of code that was generated for the toolpath.

 

X3.3602Y2.0431Z-2.82I-.1039J.0431

X3.568Y1.9569Z-2.86I.1039J-.0431

X3.3602Y2.0431Z-2.9I-.1039J.0431

X3.568Y1.9569Z-2.94I.1039J-.0431

X3.3602Y2.0431Z-2.98I-.1039J.0431

X3.568Y1.9569Z-3.02I.1039J-.0431

X3.3602Y2.0431Z-3.06I-.1039J.0431

X3.568Y1.9569Z-3.1I.1039J-.0431

X3.4641Y2.1125Z-3.125I-.1039J.0431

Y1.8875R.1125F0.

Y2.1125R.1125

Y2.R.0563

G1Z-1.8F25.

G0Z.25

M5

G91G28Z0.

G28X0.Y0.A0.

M30

%

 

I have played around with the parameters but am having no luck. What am I doing wrong??

[MetalMarvels]

Which version of MC and what post are you using with this?

[LFP]

Mill9, Fadal VMC 4020, and Mpfan. I am new to this whole MC thing so learning as I go.

[MetalMarvels]

I would suggest switching to the MPFADAL1.pst or the MPFADAL2.pst (depending on whether your 4020 is in Format 1 or Format 2) or even better, obtain a copy of MPMASTER-FADAL.pst from your MC reseller. The MPFAN.pst is not really the best to use with a 4020.

 

You will also need to "setup" your post according to the equipment you have - for example, the 4th axis question at the end of the post processor needs to be set to "n" for no. Your reseller can certainly help you get your post operating more or less correctly.

 

Do you have "Start at Center" checked in the Helix Bore Parameters tab?

[crazy^millman]

+1 on the Posts to use. I use the MpMaster_Fadal here and I have not had a probelm posting code with it. We do very complex models and full 3d machining as well as 4th axsi machining on the Fadals with no problem.

 

Crazy Millman