This is a Gem again, Gennady! :) Thank You for paving the way, we would have to spend time and efforts to investigate (and with uncertain luck). I have missed Your previous video, somehow, although I have subscribed. I am happy to see them both now. I also have a lot of scraping to do with my old machines. Your presentations are enlightening and encouraging, a recipe to get it well done if only simply followed with care and attention. It is hard to imagine a process more efficient than Yours. Thanks again! Btw You have not removed the information about the sale from Your last video yet, so I hope it is still relevant and will try to get in touch with You again with that regard :) /Grzegorz
Excellent Grzegordz! I have already gained my first experience in repairing a guide with an autocollimator. You see, I'm working with the same as yours, 1 arc second. Already with this autocollimator you can do the job perfectly and get excellent accuracy on the guide. If you add a good camera and display the image on the monitor, the sensitivity of the device will significantly increase.
Thanks Gena, maybe You are right and 3-5 microns per meter is enough for me at the moment. My mill is also worn out at as much as around 0.1 mm on the main axis. The tricky part being that I have 45deg dovetails on table parts weighing hundreds of kilos
Excellent presentation of an accurate and systematic measuring process. I'm wondering one thing: did you check beforehand whether the machine was still exactly level everywhere?
I don't know how the foundation is equipped. Everything below is filled with concrete. I hope that the requirements of the technical manual are met, and everything is firmly fixed on a solid foundation.
If I did the math right (no guaranty ;-), the total out of tram vertical angle of arctan(0.26/2/300) ~= 1.48969017 arc minutes means dropping B1/B1 by about 0.43 microns. And moving back toward tram is generally a good idea. Since C1/C2 can not rise up then B1/B2 need to drop, but only if D1/D2 have an excess of greater than 0.86 microns above flat, else the whole run will need to drop and that is a lot of work, especially when it only corrects a cosine error in the vertical measurement of ~=94 nanometers per meter! Great work, thank you for sharing!
Hello! I use GPТ chat for translation. Of course, I checked the play. That is, what freedom of displacement is available that has arisen as a result of wear.
wonderful explanation of the thinking behind the process !!! thank you , best regards , Steve
This is a Gem again, Gennady! :) Thank You for paving the way, we would have to spend time and efforts to investigate (and with uncertain luck). I have missed Your previous video, somehow, although I have subscribed. I am happy to see them both now. I also have a lot of scraping to do with my old machines. Your presentations are enlightening and encouraging, a recipe to get it well done if only simply followed with care and attention. It is hard to imagine a process more efficient than Yours. Thanks again! Btw You have not removed the information about the sale from Your last video yet, so I hope it is still relevant and will try to get in touch with You again with that regard :) /Grzegorz
Are you Grzegordz from Poland, whom I know?
Yes :) You have my precision plates ;)
Excellent Grzegordz! I have already gained my first experience in repairing a guide with an autocollimator. You see, I'm working with the same as yours, 1 arc second. Already with this autocollimator you can do the job perfectly and get excellent accuracy on the guide. If you add a good camera and display the image on the monitor, the sensitivity of the device will significantly increase.
Thanks Gena, maybe You are right and 3-5 microns per meter is enough for me at the moment. My mill is also worn out at as much as around 0.1 mm on the main axis. The tricky part being that I have 45deg dovetails on table parts weighing hundreds of kilos
Your care and precision are admirable
Well done 👏
Excellent presentation of an accurate and systematic measuring process. I'm wondering one thing: did you check beforehand whether the machine was still exactly level everywhere?
I don't know how the foundation is equipped. Everything below is filled with concrete. I hope that the requirements of the technical manual are met, and everything is firmly fixed on a solid foundation.
If I did the math right (no guaranty ;-), the total out of tram vertical angle of arctan(0.26/2/300) ~= 1.48969017 arc minutes means dropping B1/B1 by about 0.43 microns. And moving back toward tram is generally a good idea. Since C1/C2 can not rise up then B1/B2 need to drop, but only if D1/D2 have an excess of greater than 0.86 microns above flat, else the whole run will need to drop and that is a lot of work, especially when it only corrects a cosine error in the vertical measurement of ~=94 nanometers per meter!
Great work, thank you for sharing!
Hello! I think you calculated everything correctly. Of course, I use the data received to the extent that it is rational.
Thank you Gena, Im making a surface grinder and was wondering about the best method to align the axes.
Another wonderful video.
Is it possible that in this case you mean 'play' instead of 'backlash'? Not important, really. Thanks for the video!
Hello! I use GPТ chat for translation. Of course, I checked the play. That is, what freedom of displacement is available that has arisen as a result of wear.
Will you also verify that the left to right travel along the bed ways (x axis?) is square to the in-out (y axis?) travel?
Slava Ukraini ❤
😀👍