Milling accuracy Estlcam vs Fusion360

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stfnhmplr
Messages : 1
Enregistré le : 10 mars 2020 13:20

Milling accuracy Estlcam vs Fusion360

Message par stfnhmplr »

Hello,

I use the RSCNC32 GRBL32bits v1.5 board to control my self-built milling machine. Unfortunately, I have a problem where I can no longer get on alone and therefore ask for your help.

When milling I have a problem with the accuracy. I have always used Estlcam and the milled parts were usually 0.8mm too small regardless of the size of the cutter. I thought at first that it was due to wrong settings of the steps, but by chance I milled something with Fusion360. There the dimensions fit surprisingly.

So I made a test: A square with 100mm edge length, once with the gcode from Estlcam, the other time with the gcode from Fusion360. The milled square from Estlcam was again too small, the milled square from Fusion fits exactly.

Does anyone know what could be the reason for this? I have attached the two gcode variants.

Code : Tout sélectionner

(Projekt test_quadrat)
(Erstellt mit Estlcam Version 11 Build 11,235)
(Laufzeit ca. 00:00:41 Stunden)

(Benoetigte Werkzeuge:)
(6 Zweischneider)
G21
G90
G94
M03 S18000
G00 Z5.0000 F800


(Nr. 1: Teil 1)
G00 X100.0000 Y-3.0000 F2000
G00 Z0.5000 F800
G01 Z0.0000 F800 S18000
G01 Z-4.0000
G03 X103.0000 Y0.0000 I0.0000 J3.0000 F2000
G01 Y100.0000
G03 X100.0000 Y103.0000 I-3.0000 J0.0000
G01 X0.0000
G03 X-3.0000 Y100.0000 I0.0000 J-3.0000
G01 Y0.0000
G03 X0.0000 Y-3.0000 I3.0000 J0.0000
G01 X100.0000
G01 Z-8.0000 F800
G03 X103.0000 Y0.0000 I0.0000 J3.0000 F2000
G01 Y100.0000
G03 X100.0000 Y103.0000 I-3.0000 J0.0000
G01 X0.0000
G03 X-3.0000 Y100.0000 I0.0000 J-3.0000
G01 Y0.0000
G03 X0.0000 Y-3.0000 I3.0000 J0.0000
G01 X100.0000
G01 Z-10.0000 F800
G03 X103.0000 Y0.0000 I0.0000 J3.0000 F2000
G01 Y100.0000
G03 X100.0000 Y103.0000 I-3.0000 J0.0000
G01 X0.0000
G03 X-3.0000 Y100.0000 I0.0000 J-3.0000
G01 Y0.0000
G03 X0.0000 Y-3.0000 I3.0000 J0.0000
G01 X100.0000
G00 Z5.0000 F800
G00 X0.0000 Y0.0000 F2000

M05
M30

Code : Tout sélectionner

(Made in : Autodesk CAM Post Processor)
(G Code optimized for OpenBuilds OX CNC 1000 x 750 with GRBL V0.9j controller)

(Program Name : 1001)
(1 Operation :)
(1 : 2D Kontur2)
(  Tool : Schaftfr ser 2 Flutes, Diam = 6mm, Len = 25mm)
(  Spindle : RPM = 24000, set router dial to 4.4)
(  Machining time : 42 sec)

G90 G94
G17
G21

(When using Fusion 360 for Personal Use, the feedrate of)
(rapid moves is reduced to match the feedrate of cutting)
(moves, which can increase machining time. Unrestricted rapid)
(moves are available with a Fusion 360 Subscription.)
(Operation 1 of 1 : 2D Kontur2)

G53 G0 Z-2
G54
S24000 M3
G4 P1.0
X-4.8 Y49.4
Z15
G1 F2000
Z5
Z-3.4 F800
G18 G2 X-4.2 Z-4 I0.6 F2000
G1 X-3.6
G17 G3 X-3 Y50 J0.6
G1 Y100
G2 X0 Y103 I3
G1 X100
G2 X103 Y100 J-3
G1 Y0
G2 X100 Y-3 I-3
G1 X0
G2 X-3 Y0 J3
G1 Y50
G3 X-3.6 Y50.6 I-0.6
G1 X-4.2
G18 G3 X-4.8 Z-3.4 K0.6
G1 Z5
Y49.4
Z1 F800
Z-7.4
G2 X-4.2 Z-8 I0.6 F2000
G1 X-3.6
G17 G3 X-3 Y50 J0.6
G1 Y100
G2 X0 Y103 I3
G1 X100
G2 X103 Y100 J-3
G1 Y0
G2 X100 Y-3 I-3
G1 X0
G2 X-3 Y0 J3
G1 Y50
G3 X-3.6 Y50.6 I-0.6
G1 X-4.2
G18 G3 X-4.8 Z-7.4 K0.6
G1 Z5
Y49.4
Z-3 F800
Z-9.4
G2 X-4.2 Z-10 I0.6 F2000
G1 X-3.6
G17 G3 X-3 Y50 J0.6
G1 Y100
G2 X0 Y103 I3
G1 X100
G2 X103 Y100 J-3
G1 Y0
G2 X100 Y-3 I-3
G1 X0
G2 X-3 Y0 J3
G1 Y50
G3 X-3.6 Y50.6 I-0.6
G1 X-4.2
G18 G3 X-4.8 Z-9.4 K0.6
G1 Z15

G53 G0 Z-2
M5
G4 P1.0
G53 X-538 Y-568
M30
Thanks in advance!

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