Messages

881

General Mach Discussion / Re: Cutting a Circle - Figures don't add up!

« on: July 23, 2020, 05:42:21 AM »

this code from Graham:

Code: [Select]

%
G21 G40 G00 G99 G17

N1 (8MM DIA END MILL)
G54 G00 G90 G43 X0 Y0 Z5. H3 S8000 M3
Z1.
G01 Z-52. F100.
X44.375 F200.
G02 I-44.375 Z-54.
I-44.375 Z-56.
G00 X0 Y0
Z5.
M30
%

will start at Z -52
1st circle cut will bring Z to -54
2nd circle cut will bring Z to -56

so the pitch will be 2mm, it is not depending on Speed, it is depending on hight differenc (Z).

882

General Mach Discussion / Re: Cutting a Circle - Figures don't add up!

« on: July 23, 2020, 03:20:15 AM »

i assume in Config -> General config  the I/J Mode is set to absolute.

so your starting coordinate in X is 44,375

by using

G2 I-44,375

you are telling the System, that the Center X coordinate of your circle is absulute -44,375

so your start is at +44,375 and the Center is at -44,375 makes a radius of 88,75 and a
diamater of 177,5. exactly what your ruler Shows.

about the Min/Max:

Max X := X-Start = 44,375
Min X:= X-Start - Diameter = 44.775 - 177,5 = -133,125

Y is nowhere specified, so it takes the startvalue = 0

Max Y := 0 + Radius  = +88,75
Min Y := 0 - Radius = -88,75

so the entire Problem is the Absolute I/J Mode insteed of incremental.

with incremental Mode we will have the following situation

so your starting coordinate in X is 44,375

by using

G2 I-44,375

you are telling the System, that the Center X coordinate of your circle is incremental -44,375 witch
makes the Center going to absolute X = 0

so your start is at +44,375 and the Center is at 0 makes a radius of 44,375 and a
diamater of 88,75.

about the Min/Max:

Max X := 44,375
Min X:= -44.375

Y is nowhere specified, so it takes the startvalue = 0

Max Y := 0 + Radius  = +44,375
Min Y := 0 - Radius = -44,375







   

883

General Mach Discussion / Re: Mach3 Conveyor belt

« on: July 21, 2020, 07:35:40 AM »

Servus,
M98 braucht kein spezielles Makro.
hier ein Code Beispiel:

Code: [Select]

F1000 (i.e. faster than possible but Mach3 will limit speed)
G20 G90 (Inch and Absolute)
M98 P1234 L50 (run subroutine 50 times)
M30 (stop)
O1234
G1 X4
G1 X0 (do a feed rate move and move back)
M99 (return)


884

General Mach Discussion / Re: Mach3 Conveyor belt

« on: July 21, 2020, 06:54:18 AM »

for stopping the x-axis by a photocell i would use the G31 probing, because it is very precise.
you have to set up your photocel as the probe Input and a G31 X200 F200 will run you X-axis for
200 in positive direction and stop as soon probe Input Comes up.

by using the Getvar(2000) you can even go back to the exact Point of hitting the photocell, because you will
allways have a overrund due slow down ramp.

for running more Loops you can use M98

885

G-Code, CAD, and CAM discussions / Re: Randomly stopping on G4 P0.1 Command

« on: July 20, 2020, 02:13:41 AM »

Code: [Select]

G01 X10 F300
G04 P0.1
G01 X0
G04 P0.1
G01 X10
G04 P0.1
G01 X0
G04 P0.1
G01 X10
G04 P0.1
G01 X0
G04 P0.1
M30


886

G-Code, CAD, and CAM discussions / Re: Randomly stopping on G4 P0.1 Command

« on: July 18, 2020, 03:10:27 AM »

try to copy this code in a Textfile like test.tap and the load/run this file.

887

General Mach Discussion / Re: Are G33 & G76 supported in Mach3?

« on: July 17, 2020, 05:27:51 AM »

i am affraid G76 will only work on in turn mode, but i am not a specialist.

888

General Mach Discussion / Re: Are G33 & G76 supported in Mach3?

« on: July 17, 2020, 05:03:43 AM »

here:

https://www.youtube.com/watch?v=xO-GHEIIOQQ

is a Video, where he demonstrates how it works.

889

General Mach Discussion / Re: Are G33 & G76 supported in Mach3?

« on: July 17, 2020, 04:58:24 AM »

for thread milling i am using a cam Programm called Estlcam.
it is cheap and easy to handle, also for other parts to create cnc code.

https://estlcam.de/

sorry the side is in German, but the Software can be switched to english.

890

General Mach Discussion / Re: Are G33 & G76 supported in Mach3?

« on: July 17, 2020, 04:42:37 AM »

here:
http://www.helmancnc.com/mach3-turn-g76-threading-canned-cycle/

is something about G76