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Messages - BR549

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1311
General Mach Discussion / Re: Perfect Lathe threading
« on: April 11, 2015, 02:21:20 PM »
I think you missed the point  8)

(;-) TP

1312
General Mach Discussion / Perfect Lathe threading
« on: April 11, 2015, 12:14:32 PM »
Finally someone has threading on a small lathe down to a science.  They have the Z synced to the spindle as it should be by encoder. AND it works(;-)

https://www.youtube.com/watch?v=_PVYLCoFoK8

1313
You are correct(;-) I have no idea what you are planning. Without seeing the mach3 screen when the machine is in motion to see what code you are running it all looks the same from here.

(;-) TP


1314
KRW, I did check and it IS theoretically possible to do it . But doing kinematics in Mach3 really ONLY has an advantage when working with rotary jointed arms such as robotic arms.  The only advantage it serves that I can see in normal CNC work is you can world point jog.

Normally the CAM does all the kinematics calculations and applies it to the Gcode output. SO to do most 5axis work you will still have to Cam it.

Waiting to see the demo, (;-) TP


1315
General Mach Discussion / Re: Using Mach 3 Pulsing Engine
« on: April 05, 2015, 04:28:11 PM »
Servo frequency generator : Diagnostics page

1316
General Mach Discussion / Re: bolt circle pattern problem
« on: April 04, 2015, 11:15:12 PM »
OK a simpler test code.  Set your center point to X0 Y0

g90
G0 X0 Y0
G81 X0 Y0 Z-.250 R.250 F10 (drill center point)
x2.5 y0
X0 Y2.5
X-2.5 Y0
X0 Y-2.5

This does 4 holes on a 5"bolt circle  . Based at X0Y0 the math is easy to do. 2.5 " each direction from center. Change teh values to suit the size of the bolt circle. 

(;-) TP

1317
General Mach Discussion / Re: bolt circle pattern problem
« on: April 04, 2015, 11:09:18 PM »
Actually it was only .0003 off. That is due to step resolution. That is not your problem.

(;-) TP

1318
General Mach Discussion / Re: bolt circle pattern problem
« on: April 04, 2015, 10:23:22 PM »
YES you can.  You do need to add a feedrate at the beginning say F10 or so. I did look at teh Wizards gcode for the same setup and it is correct. (;-) You may have a gantry that is out of line with the X axis.

(;-) TP

1319
General Mach Discussion / Re: bolt circle pattern problem
« on: April 04, 2015, 10:03:23 PM »
Here is a simple G16 routine where MACH3 does all the math. Try it. It drills a center hole and  a bolt circle of 5" radius 4 holes 90 deg apart.


G90
G0 X0.00 Y0.00
G0 X6.00 Y6.00 (move to center point of bolt circle)
G81 X6.00 Y6.00 Z-.250 R.250 F10   (drill the center point hole)
G16  (X will set a radius from the center point, Y sets the angle)
G81 X5.00 Y0 Z-.250 R.250 F10   ( Drill first drill point at 5.00"radius and at zero deg:3 oclock)
X5.000 Y90          ( rotate to 90 degress and drill hole)
X5.000 Y180        ( rotate to 180 deg)
X5.000 Y270         (rotate to 270 deg)
G80  (cancel cycle)
G15  ( cancel G16)
M30
%

1320
General Mach Discussion / Re: bolt circle pattern problem
« on: April 04, 2015, 09:40:06 PM »
how far off are the holes ? Are they off in the radial mode.  4hole mode = 4 holes 90 deg apart radially.

Have you tired drilling a test hole instead of milling ??

When you say mill wizard is that the one that comes standard with Mach3 or one of the NFW ones ?

(;-) TP

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