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11

General Mach Discussion / hickup at 12 and 6 oclock

« on: April 18, 2007, 05:04:48 PM »

Hi
We are developing a new machine and part of it is an XY table moving in a circular motion.

Using code listed below.

At 12 and 6 oclock on the graphics we can see a disturbance on the feedrate DRO. This shows in the servo motion as a blip and spoils the smooth motion we need.

I have tried faster PC's = makes no difference
Slowed feed speed down to 100mm/min - still present

It would appear as if at the point of calculating the G03 the pulse output gets disturbed

We are using version .062

Can you provide any ideas as to how to avoid this issue

Regards

Graham


G0 G49 G40  G17 G80 G50 G90
M6 T1 (TOOL DIA. 2)
G21 (mm)
M03 S100
G64

G00G90X0.Y0.
G00G90Z5.
G01G90Z0.F100.
G91G03Y19.Z-0.05R9.5F100.
G03J-19.Z-0.1 F1000
G03J-19.Z-0.1
G03J-19.Z-0.1
G03J-19.Z-0.1
G03J-19.Z-0.1
G03J-19.Z-0.1
G03J-19.Z-0.1
G03J-19.Z-0.1
G03J-19.Z-0.1
G03Y-19.Z-0.05R9.5
G00G91Z.254
G90Y0.
Z5.
M30
%