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Topics - Doddy

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Newfangled Mill Wizard / New user, confused by feed and plunge rates
« on: January 02, 2014, 05:35:20 AM »
I bought/registered MillWizard today, having taken a step into CNC over Christmas, and wanting a SIMPLE utility to allow GCode to be quickly and easily created.

I've created a project to cut a rectangular shape from a piece of perspex, thinking that I'd created suitable feed and plunge settings (800mm/min, 60mm/min, respectively). What happens with the generated g-code is that the feed rate is set correctly for the plunge, but never set again for the x/y feed, resulting in a very slow x/y feed into the work (which, with perspex, is likely to burn the stock material). G-Code extract given below with the plunge feed-rate highlighted (*****) :-

(MillWizard 1.0.13)

Any clue as to what I'm doing wrong?

Code: [Select]
(***New File Started***)
(created by NFS Mill, V4)
(New File Started 01/02/14 09:42:40)
(posted for Perspex3mm )
(Strategy:  As Entered)
(Rapid height: 1.0000  Clearance height: 1.0000 )
G98 G80 G17 G90 G54 G64 G91.1

G21 G90
(***New Tool Selected***)
(ToolNum: 02  Diameter: 2.3825  )
(Feed: 800.0000  SFM: 168.0000  Plunge: 60.0000  ChipLoad: 0.0318  )
M9
M5
M06 T2 (Green CornCob)
G43 H2
M03 S16843
(***Cut Rectangle***)
(Xorign: 0.0000  Yorign: 0.0000  Length 200.0000  Width: 160.0000  CorR: 0.3000  InOut: 01  )
(Ztop: 0.0000  Zdepth: -2.9000  Zstep: 1.0000 )
(will make  3.9000  cuts of:  1.0000 )
G00 Z1.0000
X0.3000 Y162.6208
X-0.8913
G01 Z-1.0000 F60.00             (*************** FEED SET HERE ****************)
X-2.0825
G03 X-0.8913 Y161.1913 I1.1671 J-0.2385
G01 X200.8913
G02 X201.1913 Y160.8913 I0.0000 J-0.3000
G01 Y-0.8913
G02 X200.8913 Y-1.1913 I-0.3000 J-0.0000
G01 X-0.8913
G02 X-1.1913 Y-0.8913 I-0.0000 J0.3000
G01 Y160.8913
G02 X-0.8913 Y161.1913 I0.3000 J0.0000
G03 X0.3000 Y162.6208 I0.0241 J1.1910
G00
Z1.0000
X-0.8913
G01 Z-2.0000

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