Messages

11

General Mach Discussion / Re: G31 Probe problem

« on: August 02, 2011, 09:49:44 PM »

My accel setting it 15 and the screw is 12 TPI. The motor is a 287 ozIn with a G540 and 48 volt PSU.
The rapid jog stops almost instant, and it is set to 150 IMP

12

General Mach Discussion / Re: G31 Probe problem

« on: August 02, 2011, 11:46:05 AM »

ok, my script is as follows

Code: [Select]

PierceHeight = GetUserDRO(1000)
CutHeight = GetUserDRO(1001)
PierceTime = GetUserDRO(1002)

If GetOEMLed(825) = 0 Then
Code "G31 Z-4 F30"
While IsMoving()
Wend
CurrentZ = getDRO(2)
ProbeTrip = GetVar(2002)
SetDro(2,-((ProbeTrip - CurrentZ) + 0.15))

Code "G0 Z" & PierceHeight
While IsMoving()
Wend
DoSpinCW()
While Not isActive(Input1)
Wend

Code "G4 P" &PierceTime 'Pierce Delay
Code "G0 Z" & GetUserDRO(1001)
While IsMoving()
Wend

Else
Code "(Torch is On Surface Hit STOP and Fix)"
End If
Here is the video
http://www.youtube.com/watch?v=2CPgk_kCH20

It does the same thing if I just issue a G31 command by itself


Thank
Dave

13

General Mach Discussion / Re: G31 Probe problem

« on: July 31, 2011, 05:02:42 PM »

I will not be able to post it untill monday. But I will also post a video of what the machine is doing.

Thanks
Dave

14

General Mach Discussion / Re: G31 Probe problem

« on: July 31, 2011, 04:12:02 PM »

This sounds kind of like my problem
http://www.machsupport.com/forum/index.php?topic=2965.0
"Here is the real problem ,if I Ref'd Z 0.0 say 1" to 8 " off of the plate the Z Axis starts to  move down trying to find the switch or 8 " and it does ,then once the switch closes the Z Axis takes forever to come to a stop(say about 1") ,"

15

General Mach Discussion / Re: G31 Probe problem

« on: July 30, 2011, 08:04:25 PM »

rrc1962 and DaveCVI, could you post your probe script?

16

General Mach Discussion / Re: G31 Probe problem

« on: July 30, 2011, 12:45:19 AM »

I will give that a try on monday and make a video if the problem still happens.
Would using G28.1 in a macro work better then G31?

17

General Mach Discussion / Re: G31 Probe problem

« on: July 29, 2011, 11:27:55 PM »

I understand that it will not stop on a dime. But over 1" of overshoot seems quite excessive.
When I job the Z at 150 ipm and let go of the jog button, it stops near instant.
I don't see why the G31 can not use this same deaccel rate.

18

General Mach Discussion / Re: G31 Probe problem

« on: July 29, 2011, 12:34:41 PM »

I have accel set to 15.
It stops fast when I am using rapid.

With a slower probe feed it does not over shoot as much, but then I am waiting longer for each cut.

The probe trip is working fine. I have a M3 macro that reads the trip point DRO and uses that to zero the Z dro and then move up to the cut height.

The overshoot will sometimes hit the limit switch on thin plates... So I was looking for a solution.

19

General Mach Discussion / G31 Probe problem

« on: July 28, 2011, 05:10:12 PM »

I have a plasma table with a floating head. I have it set to go a G31 probe with a feed rate of 60 ipm.
The problem is that the motion is ignoring the accel / decel rates that is set it motor turning.

This causes the stop point to overshoot the sensor by almost 1 inch...

Any ideas?


Thanks
Dave

20

Galil / Re: Mach with galil reliability

« on: November 19, 2010, 09:00:52 AM »

Thank you. It sounds like I don't have to worry much about damaging any work pieces once everything is setup then.