Hello Guest it is March 28, 2024, 02:47:46 PM

Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - XLR84x4

Pages: « 1 2 3 4 5 6 7 »
21
G-Code, CAD, and CAM discussions / Re: reset home with G code
« on: December 17, 2008, 10:04:55 PM »
Thanks TP,

I have sent you an email

22
G-Code, CAD, and CAM discussions / Re: reset home with G code
« on: December 16, 2008, 10:10:59 PM »
Thanks TP

I only wish to reference the A axis.

Yes it would be great to have a macro and use M codes throughout the code.

I have never written a macro so I would certainly like some help

C

23
G-Code, CAD, and CAM discussions / Re: reset home with G code
« on: December 16, 2008, 07:38:51 PM »
Hi All,

I found this little gem. I have tried adding G28.1 A0 after a cycle of a specific cut before moving on to the next as a way of picking up of lost steps by referencing the A axis. I have found that the program stalls/stops at the addition of this code.

Is there somthing I have missed?

24
SmoothStepper USB / Velocity FIFO Ran Dry
« on: December 16, 2008, 05:42:38 AM »
Like the title says

What does it mean when this is flagged in SS monitoring??

25
General Mach Discussion / Re: A axis speed limiting in Tangential Mode
« on: December 03, 2008, 07:08:49 AM »
Hi Jim,

Thanks for the reply.

The knife is mounted directly on the end of the stepper and my tests have been dry runs. I have an optical homing switch on the A axis.
Yes the pattern/cuts are the same with as few as  20 up to 50 items. As far as accuracy I would like my machine accuracy to be 0.5mm but would settle for 1mm in tangential mode. I have also reduce feed rate to 5000mm/min with same lost steps

I have one file with +15 parts that runs great with no missed steps. I rescaled these parts and did a run of 20 with up to 8 deg lost at the end of the cycle. I rehome the A and run the original 15 parts for no lost steps. I have even set the linerisation tolerance on my iges file to 2mm up from 0.005mm to reduce the amount of lines and angle changes however this file still looses step. I have even stopped the cycle after each part and ran a A0 to check the a postion and it does lose postion after each cut. This has been tested with no cutter in place so no load on the stepper. the Gcode file Top large is the good file with the top small having issues. This is prior to rescale

I have a smooth stepper and have set the max step frequencies as such
A axis steps/deg 5.55555 with a feed rate of 10000mm/min = 166.66mm/sec x 5.55555 =925 steps/second set to 32khz

With Controller frequency at 2mhz.

I'm using Gecko 203V's and in motor tuning set step/dir pulses to 5us. The A is a vextra stepper 1.8deg wired as  unipolar with current set to 2 amps. It does get warm to touch

There is limited to no threads on tangental control so it would be great to hear from other users

Thanks
Jason


26
General Mach Discussion / A axis speed limiting in Tangential Mode
« on: December 01, 2008, 06:00:08 AM »
Hi All,

Ok I have been tuning my fabric cutting table to get the most from it in terms of speed.

As the A axis has to rotate first to align to the x-y trajectory it is the speed of this A move that dictates the overall speed of the machine. I have wound up my A axis Velocity and accell values to the point where it is loosing steps at best I can acheive a feedrate of 6000mm/min cutting air

So what to do is the question. The A axis only has to move a few degree's at a time however it has to do it fast.

My A axis steps/deg is 5.55555 this is worked out as 2000/360 deg and my vel/acc is currently 15000 and 15000. which is where it starts to loose a few degress over the period of a large file run.

Also the machine runs it best/smoothest n Plasma Mode with G64 on but no CV settings ticked

Should I start to look for a servo??
Jason


27
General Mach Discussion / What was upgraded in R3.042.015
« on: October 25, 2008, 09:43:55 PM »
I can seem to find what bug fixes were done in version R3.042.015n

Iam hoping that CV for tangential axis has been implemented.

Jason

28
SmoothStepper USB / Re: Strange behavior
« on: September 17, 2008, 06:32:21 AM »
Yes I to do not have the SS grounded, it is only connected to my PC via the USB cable and I'm using the PC power supply.

You will nead to assign your estop to your input.

When do did the wiring change to the SS how did you configure the port header to a terminal strip to terminate your cabling??

29
SmoothStepper USB / Re: Strange behavior
« on: September 16, 2008, 08:19:13 AM »
Hey there,

I have done a very similar swap over as you have. I have my SS connected directly to the G203 also and have installed the Grex plugin to work as I/O only on Port 3. I am running SS 13C plugin and just upgraded to the latest beta test Mach but was running 3.041 with no problems.

My only querks were random Estops however a few resistors/capacitors and the new plugin took care of the gremlins. I have steppers on the Y and A and a servo on the X axis and can run my little machine up to 10000mm/min as a three axis machine with X-Y gcodes as you suggested with no issues.

It was very easy to setup the new mach for the SS by creating a new profile etc I did have a few minor querks getting the Grex loaded with the new plugin but it was a matter of re-reading the manual.

All I can suggest is re-visiting your motor setup ensuring you have the step pulses correct. My vel is 20000 with Accell of 1250 on the X and Y and vel25000 with acell of 20000 on the A Axis stepper. No stepper losses with these high settings. My only quirk is the tangentail control not running CV hence the high A axis, just waiting on the new Mach release to hopefully fix this.

If you need any other setup info from my machine, I would be happy to assist as the guys on this forum have passed on the same help when I started out. Geez it made life easy asking all the dumb questions and getting good help

Jason


30
General Mach Discussion / Re: Version 3.042.003 Ready for testing.
« on: August 27, 2008, 04:17:19 AM »
We I gave the new rev a run tonight.

Did not see any major differences in the way the tangential A axis operated.

One bug however was that the A Axis rotated prior to the Z being lifted on the move to the next cut. It still seems that the A axis in Tangential mode is running in exact stop.

Brain what changes in this rev was made that may make the A axis run in CV

Jason

Pages: « 1 2 3 4 5 6 7 »