that is exactly correct for conventional 4/5 axis control

if you want to simplify the programming you can develop kinematics for the
machine
this will allow simple programs to do complicated motion - it is not
necessary for 5 axis motion - sometimes it is not desirable

to get where you need to go right now having the post processor do the
kinematic calculations is probably best

you will always be able to start the machine with separate ini files to use
posted kinematics or 'in the control' kinematics


On Tue, May 3, 2011 at 1:48 PM, Steve <[email protected]> wrote:

> Stuart Stevenson replied "agreed - the "kinematics" is in the g code
> program
> - just having the machine control the axes is enough to be able to cut 5
> axis parts"
>
> I was under the impression that the kinematics had to be written in EMC2
> for
> the coordinated movement between all the axes to function properly?
>  However
> what you say seems to make more sense.  When the tool path is generated by
> the CAM software, off the surfaces of the 3D model, the software uses the
> user selected post processor to output the G code for the desired tool
> path.
> So it is the writer of the post processor that will have to know the
> orientation of the axis of the machine being used (hence the kinematic
> calculations) so that the G code is correct to produce the desired tool
> path.  Am I understanding this correctly?  Then is it a matter of setting
> up
> the correct axis in the ini and other files of EMC2 to achieve motion of
> the
> XYZAB axes?
>
> Thank you for your help - Steve Van Der Loo
>
>
>
>
>
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