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Messages - JamesC

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We finally think we have found the problem with the machine.  working with the service people,  we switched the y and z axis servo controllers and the error went away, so it seems to be a bad servo controller.  Taking a closer look at the controller we noticed soot on top of it :-(
Anyway,  the unit is a Delta ASD-A0721-AB,   it an older unit not being produced anymore.  If anyone knows a supplier in Canada or the US that has some of these,  please contact me with the info.   I have found then in china but would like to get them a little closer to home.
Thanks

James

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General Mach Discussion / Re: Positioning errors and out of round holes
« on: February 18, 2016, 03:55:21 PM »
Russ
  I am a bit out my league here :-)  where are those changes you referred to??

Thanks

James

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General Mach Discussion / Re: Positioning errors and out of round holes
« on: February 18, 2016, 02:28:02 PM »
Gary
  The Servo motors are Delta ECMA C30807PS  750W ac.   The Servo Drives are also Delta - ASD 0721-AB  750W.  All run through a eCut V1.1 breakout board.   The electrical cabinet is pretty good But with the long runs of cables I wouldn't know where to look for interference.   Here is a shot of the cabinet.  the cables have been tidied up since.

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General Mach Discussion / Re: Positioning errors and out of round holes
« on: February 18, 2016, 11:26:17 AM »
Hood
  I did a few more tests.  Using the procedure in the V3 config manual using the indicator and gauge block.  I ran the short program they used 50 times and I get an incremental error while testing the X and Y axis.

  With a back and forth movement of 4"(101.6mm) and a feed rate of F1000(mm) at the end of the 50 reps I was averaging 0.015"(0.381mm) on the Y axis and 0.035"(0.889mm) on the X axis.
  Backlash on the Y axis was 0.013"(0.3302mm) and 0.001(0.025mm) on the X axis.   
  I havn't tried to get the mechanical backlash out of the Y yet.  When I tried using the Backlash settings (putting in 0.3302mm) the accumulated errors on the Y went up to over 0.060" an the machine did not go back to the original zero point at the end of the program.  it went to 0.3302, the same as the backlash input.

  If this was just the motor tuning then the length of movement might be off but it should still return to the original zero and it is not doing that.

Any ideas?????

I would love to start using this giant paperweight.

thanks

James

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VB and the development of wizards / Re: Tool change macro help needed.
« on: January 19, 2016, 02:54:47 PM »
TP
  Thanks,  I will try it out tomorrow after they get the F**&ing tractor out of the garage so I can get at the machine :-)

James

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VB and the development of wizards / Re: Tool change macro help needed.
« on: January 19, 2016, 01:13:33 PM »
TP
  I don't want to change the axis configuration as it is now.  I just need to change the macro so when it approaches the tool changer it will offset in the x instead of the y for the safe distance.
  I can change the tool changer finger locations through the Ecut plugin control-Ecut cnc v1.0-other configurations-Misc- and using  dial indicator get my locations

James

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VB and the development of wizards / Re: Tool change macro help needed.
« on: January 18, 2016, 03:46:14 PM »
OK.  Our machine is set up with the y axis is reversed from most machines.  looking from the front of the machine Y runs right to left and the x front to back with the tool changer fingers at the back.  The way the macro is done it moves the tool a -100mm in the Y before putting the tool into the fingers.  I need the macro to have the tool move -100mm in the X to prevent it from smashing into the tool change fingers

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VB and the development of wizards / Tool change macro help needed.
« on: January 18, 2016, 02:48:33 PM »
We have a new 4x4 router with a six position gripper style tool changer.  the problem is the macro is set up to safe offset in the Y axis but our machine needs it on the X axis.  While I am a long time cnc programmer (mainly lathes) I am a newbie to macros of this sort and Mach3 in particular.
We are not getting a lot of support from the dealer on this and would like to get the machine up and running.
Attached is the tool change macro

Any help with this would be greatly appreciated

James

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