search

CauldronDevelopmentLLC / CAMotics

Open-Source Simulation & Computer Aided Machining - A 3-axis CNC GCode simulator
Other
602 stars 140 forks source link

Set tool origin/start point to workpiece center at toolpath's max Z #317

Closed kfmut closed 4 years ago

kfmut commented 4 years ago

Hi,

I'm pretty sure that this question was asked before but I'm having troubles to find related "issues", so...

Why not to set default tool origin/start point to workpiece center at toolpath's max Z? It will allow to remove first moves right thru workpiece if part origin is set at bottom face of workpiece.

Screen-2020-01-10_23-00-38

test_project.zip

jcoffland commented 4 years ago

Usually, the way to fix this is to have the tool move to a safe z-height at the start and end of program. Wouldn't the real CNC have this same problem? If the simulator automatically moved the tool it would not catch this type of error.

kfmut commented 4 years ago

@jcoffland

Sometimes it's done with G28 G91 Z0 move, but Camotics have no idea about G28 safe position so I think it simply skips it.

`N00001 G17 N00002 G21 N00003 G94 N00004 G28 G91 Z0 N00005 G90

N00006 T1 M6

...

N00046 G0 X53.506 Y11.025 S12000 M3 N00047 Z18.000 N00048 Z13.000 N00049 G1 Z9.000 F456 N00050 X53.299 Y11.348 Z8.954 N00051 X52.425 Y11.731 Z8.838`

jcoffland commented 4 years ago

CAMotics does understand G28 but the position has to be set first. G28 defaults to zero. Unfortunately, there is currently no way to set this before the simulation starts. I'm working on adding a machine configuration that could allow you to set up the initial state of the machine.

kfmut commented 4 years ago

Yep, detailed machine configurations would be nice addition.