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Backlash config question Mach3 Mill
- Thread starter scdiveteam
- Start date
HI,
Last year Jim Sickles told me how to tune in the backlash in the config area of Mach 3.
I did the procedure the other day and it seems everything is now very good.
What puzzels me is why where my parts and nestings were perfect with a .005 out on my X and .0035 out on my Y.
Since doing the backlash compensation the new parts I made are too tight for the other test pockets I made before the adjustment.
I guess that when making just parts and testing the pocket compensations the machine and program works with smallers geometries with the type of error I had.
Thanks for all of the help everyone has offered. It is appreciated.
If anyone needs any help in this area, or wants to check their machine, I am at your service for any help.
Like Jake said that these problems only make you smarter in the long haul. He was right! I also agree in have the machine very clean!!! LOL.
Good Cue Making,
Rick
Last year Jim Sickles told me how to tune in the backlash in the config area of Mach 3.
I did the procedure the other day and it seems everything is now very good.
What puzzels me is why where my parts and nestings were perfect with a .005 out on my X and .0035 out on my Y.
Since doing the backlash compensation the new parts I made are too tight for the other test pockets I made before the adjustment.
I guess that when making just parts and testing the pocket compensations the machine and program works with smallers geometries with the type of error I had.
Thanks for all of the help everyone has offered. It is appreciated.
If anyone needs any help in this area, or wants to check their machine, I am at your service for any help.
Like Jake said that these problems only make you smarter in the long haul. He was right! I also agree in have the machine very clean!!! LOL.
Good Cue Making,
Rick
Thanks Jim,
I could not remember what you told be last year but I quickly remembered when I did the test with the moves and the indicator.
Thanks for everything that you and Brian do with your great products and support,
Rick
RBC
Deceased
Rick
I hope you've solved your problem. If you have, please remember to post your findings here for all to see. The sharing part is whats great about AZ.
Your choice to not provide any of the additional information that I asked for tells me that either you fixed it, or felt that I was going in the wrong direction. I'm good either way. I am curious though what the outcome is.
I hope you've solved your problem. If you have, please remember to post your findings here for all to see. The sharing part is whats great about AZ.
Your choice to not provide any of the additional information that I asked for tells me that either you fixed it, or felt that I was going in the wrong direction. I'm good either way. I am curious though what the outcome is.
That is exactly what I was about to post. With new anti-backlash screws and nuts there should be no compensation needed unless the shaft thrust bearings or something is not connected tightly allowing some play. There is seldom anything in life that is free. What is acquired at one end is usually off-set on the other. When backlash compensation is needed in software it will almost always cause troubles in making arcs in a program.
I once had one of the thrust bearings, which on my machine are pre-loaded, start to go bad on my X-axis and it took me a little hunting to figure it out.
Dick
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RBC
Deceased
Rick
At least a few of us are curious about the outcome to your problem.
Collectively, we have come together to try to offer you advice and assistance based on all of our experiences. We would appreciate knowing what the results were so that we could add this scenario to that collective list of experiences.
Yet you have ignored multiple requests to share the outcome or current status of the issue you asked us to help you with.
It's your right to choose not to share that information, but don't be surprised if you don't get quite as much assistance with future requests.
At least a few of us are curious about the outcome to your problem.
Collectively, we have come together to try to offer you advice and assistance based on all of our experiences. We would appreciate knowing what the results were so that we could add this scenario to that collective list of experiences.
Yet you have ignored multiple requests to share the outcome or current status of the issue you asked us to help you with.
It's your right to choose not to share that information, but don't be surprised if you don't get quite as much assistance with future requests.
Royce,
Thanks you so much for your interest and all the help that you , Jim and others offer here. Your many years of experience and your willingness to offer help is truly appreciated by my myself and many others share that sediment.
Excuse me for being non responsive but I have been up to my ears in it over here.
I am going to have to write post as long as a novel to describe what I am experiencing and will do it today for sure. I just spent over 1/2 half hour listing the stuff I am seening and my internet dropped out and I lost it. So I will post tonight with the pics I have.
Again, I hope my non responsive behavior was not taken wrong. I am dealing with a big workload and was hoping to work my way through the problem myself. Not!!!!!!!
Thanks for your help and interest in helping someone out.
Rick
I am confused! Earlier you where thanking people for their help and offered help to others as your now an expert with no explanation to the fix. Now you respond with "you will post information on issues that you are now experiencing in a present tense.
Please stop the merry go round. I am getting off.
Good luck, Jim.
Hi Jim,
I am an expert at many things from my life's experience. Believe me CNC Troubleshooting is not and area of my expertise by a long shot. I am sorry if I gave you that impression as it was not my intention.
Today I resolved all my problems with the CNC. My backlash numbers were insignificant. As they were .0004 on the X and .0003 on the Y. In a previous post I reported it in thousands not tenths.
After I changed my backlash at that time I made some large pockets that were 3.750 long and .670 wide .200 deep that were to accept some box geometry. When I tested them they seemed to be working and I thought the problem was fixed. The third time I did it however they were causing problems with a small stair step look of the -X side as I had 4 depth cuts of .050
The machine was still not going to the X home position after a routine was completed when I hit the Go To Home button. As was advise here, I rechecked the thrust bearing, lovejoys and everything that was mechanical and it was all tight. I even changed out my X for my Y motor and it did the same thing. I must have done 10 to fifteen tests and the repeatability was not good but all of my profiles were very good.
I also edited many G-Codes for tests using the G53 X0. at the end to no avail either.
Today I talked Jim Sickles and he had me go through all of the pins and ports buttons, numbers for the X,Y,Z and A in the motor area and we changed a bunch of stuff in the general config parameters.
My machine now goes back to the home position with accuracy, the large pockets are not stepping out on the X and I am overjoyed with the outcome.
From the beginning I was told by you guys that is was not my backlash and your guys were absolutely correct. Thanks very much.
I appreciate all of your suggestion and advise and my not responding was due to frustration and burn out trying things and drawing at straws for many days and long nights all the while I was getting behind of my production for cue orders. Burn out city for sure.
When I run my machine now the steppers sound very different like a more positive and deliberate feed back type of sound. Before the movements were more of a lazy or slower type reaction to the program. What a difference!!!
John Spitz was at my shop and the first words out of his mouth was that he thought that it was doubtless a few numbers and buttons were wrong in the Mach 3 set up because he saw some of my results. He was also here today and saw the positive outcome after making the changes to Mach 3 Mill.
Thanks again for your help and feed back. It is appreciated.
Also thanks to Jim Sickles who has taken my blood pressure down a peg by taking his time to go over this stuff on the phone.
I will get some sleep tonight and not have to worry about problems that I could not solve on my own and can get back to cue making.
One thing I have done today was to take screen shot pictures of all the Mach 3 windows so I can have an archive for the future.
Rick
I am an expert at many things from my life's experience. Believe me CNC Troubleshooting is not and area of my expertise by a long shot. I am sorry if I gave you that impression as it was not my intention.
Today I resolved all my problems with the CNC. My backlash numbers were insignificant. As they were .0004 on the X and .0003 on the Y. In a previous post I reported it in thousands not tenths.
After I changed my backlash at that time I made some large pockets that were 3.750 long and .670 wide .200 deep that were to accept some box geometry. When I tested them they seemed to be working and I thought the problem was fixed. The third time I did it however they were causing problems with a small stair step look of the -X side as I had 4 depth cuts of .050
The machine was still not going to the X home position after a routine was completed when I hit the Go To Home button. As was advise here, I rechecked the thrust bearing, lovejoys and everything that was mechanical and it was all tight. I even changed out my X for my Y motor and it did the same thing. I must have done 10 to fifteen tests and the repeatability was not good but all of my profiles were very good.
I also edited many G-Codes for tests using the G53 X0. at the end to no avail either.
Today I talked Jim Sickles and he had me go through all of the pins and ports buttons, numbers for the X,Y,Z and A in the motor area and we changed a bunch of stuff in the general config parameters.
My machine now goes back to the home position with accuracy, the large pockets are not stepping out on the X and I am overjoyed with the outcome.
From the beginning I was told by you guys that is was not my backlash and your guys were absolutely correct. Thanks very much.
I appreciate all of your suggestion and advise and my not responding was due to frustration and burn out trying things and drawing at straws for many days and long nights all the while I was getting behind of my production for cue orders. Burn out city for sure.
When I run my machine now the steppers sound very different like a more positive and deliberate feed back type of sound. Before the movements were more of a lazy or slower type reaction to the program. What a difference!!!
John Spitz was at my shop and the first words out of his mouth was that he thought that it was doubtless a few numbers and buttons were wrong in the Mach 3 set up because he saw some of my results. He was also here today and saw the positive outcome after making the changes to Mach 3 Mill.
Thanks again for your help and feed back. It is appreciated.
Also thanks to Jim Sickles who has taken my blood pressure down a peg by taking his time to go over this stuff on the phone.
I will get some sleep tonight and not have to worry about problems that I could not solve on my own and can get back to cue making.
One thing I have done today was to take screen shot pictures of all the Mach 3 windows so I can have an archive for the future.
Rick
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