[kluppy]

hi,

i have recently bought one of the Chinese 6040 cnc routers. i am producing the drawing and G codes in bobcad V24 and using mach3 to run the machine.
i am engraving 316 stainless steel and have got my spindle rpm and cutting feed rate dialed in to where i am happy. the question i have though is how do i speed up the rate for lifting from the job and traversing from one letter to the next? is this a setting i need to change in bobcad before it creates the code or is it a setting in mach3?

sorry if i have posted this in the wrong area, just thought it was a good place to start.

[John S.]

If the command in Bobcad is G0 or G00 [ both the same ] then the setting lies in Mach.

The velocity figure in the motor tuning window is the fastest speed the machine can go.
If metric and set to say 2,000 than that is 2,000mm / min or 2 metres per minute.

[aldepoalo]

BobCAD will set 2 speeds for cutting.

1) As the tool enters the material / or cut

2) The rate in which the tool is cutting alone in the cut.

The G00 speed is set on the machine not set in BobCAD.

[aldepoalo]

(PROGRAM NAME: BOBCAD1.NC)
(DATE: MON. 05/07/2012)
(TIME: 10:52AM)

G90 G80 G40 G20 G17

(FEATURE PROFILE)

(TOOL #1 0.5 ENDMILL ROUGH)
T1 M06
M00
S10000 M03
G54 X-0.1164 Y0.7099
G00 G43 H1 D1 Z0.1 M08
G01 Z-0.5 F25. <<<< Plunge Feed Rate
Y0.4599 F75.<<<<<<<Cutting Feed Rate
G17 G03 X0.1336 Y0.7099 R0.25


This link talks about where to set the rapid rate in mach 3 : http://www.machsupport.com/forum/ind...=16724.10;wap2

[mvarcani]

Not sure if this will help but in V21 when opening insert nc your tool depth settings allows you to input your normal and your plunge feed rate. otherwise I would normally edit in program after dry run.

[kluppy]

thanks very much guys, i'll try a few of these and get back to you.