Cutting corners for sure...

On 4/10/2013 6:10 AM, Claude Froidevaux wrote:
> Agree, for example this line to arc is NOT tangent:
>
> N300 G1 X4.121 Y88.649 Z-1.000
> N310 G1 X4.891 Y91.654 Z-1.000
> N320 G2 X8.045 Y101.818 I125.643 J-33.412
>
> I don't know what mach3 is doing to go full speed trough this, but it is
> theoretically not possible to go full continuous speed trough this
> without having infinite acceleration (assuming perfect position of course!).
>
> Claude
>
> Le 10.04.2013 11:22, andy pugh a écrit :
>> On 10 April 2013 08:24, Steve Blackmore <st...@pilotltd.net> wrote:
>>
>>> Do a line connected to an arc and vice versa then try. The slowdown is
>>> on the transition here.
>>>
>>> If you run the code you can actually see the slowdown on the feed
>>> display in the gui in Axis.
>> I put that down to the arcs and lines not being tangents, so there is
>> a sharp corner at each transition (I have checked in a CAD package,
>> the lines and arcs are _not_ tangents.)
>>
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