Restoration of my Schaublin SV52 toolroom milling machine

Thanks for the kind words everyone. Jan and his classmates made it very easy to teach. He and a few others stayed 2 extra days extra, so they had 5 days of training. Jan please tell the group a little more so your name and not mine to be at the top of the list...as you deserve the headline. Your doing a fantastic job. Maybe you should explain on here why you stepped scraped it, tip and blind scraped it. Those who took the classes know what your talking about but the others might be a bit confused with those terms. Your a computer expert and so are a couple of the other students, if it's not to hard to do add some sort of of internet drawing please. It might be easier to explain. Jan I understood when you used you hands to explain tip scraping, but it would be unclear to people who haven't taken the class. I haven't commented much lately as my uncle who was ill for so long finally got some peace and I am a bit preoccupied now.

Thanks Jan and I am very proud of you and I also feel the GA class was one of the great ones in my memory. The PA class looks like it will be a good one too. :)

Rich
 
I had filled up my quota on pics so I chose to make videos out of the "collection". I also added more material. Hopefully they can be useful for others, especially if they are doing the same milling machine. I also have many more other pictures/videos, details shots which are a must when re-assembly times comes around (contact me if needed). For a "story on the restoration up until I swopped to videos, see here:

1) Schaublin SV52 milling machine, at the dealer, then in garage at home
http://www.youtube.com/watch?v=aQ-N8lh6RdU

2) Schaublin SV52 milling machine, table and column way tests before dis-assembly
http://www.youtube.com/watch?v=z-Uv6HaDOGU&feature=youtu.be

3) Schaublin SV52 milling machine, functions and defects
http://www.youtube.com/watch?v=Y8xcyqJRCPg

4) Schaublin SV52 milling machine gearbox internals and mechanism in action, some wear/damage
http://www.youtube.com/watch?v=VcUPfYsBJDM&feature=youtu.be

5) Schaublin SV52 milling machine, saddle and table dis-assembly
http://www.youtube.com/watch?v=eF3dwqJzuDI

6) Schaublin SV52 milling machine rear side, motor clutch and gears, fuse box and wiring
http://www.youtube.com/watch?v=xK1SvGtPJO0

7) Schaublin SV52 milling machine, parting and moving, from garage to workshop
http://www.youtube.com/watch?v=PqVAjYj2V6s&feature=youtu.be
 
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Tip & step scraping instructions as asked of by Richard (also related to Ola's camelback thread)
 

Attachments

  • Drawing of the way system on the Schaublin SV52 milling machine.pdf
    188 KB · Views: 8
  • Tip scraping.pdf
    251.9 KB · Views: 17
Excellent write-up. I'll be following this thread as you rebuild and reassemble your machine. This will be an excellent machine once it is all put back together. :))
 
xalky said:
Excellent write-up. I'll be following this thread as you rebuild and reassemble your machine. This will be an excellent machine once it is all put back together. :))[/QUOTE

Thank you. I am in process of editing the remaining videos to catch up on documenting to my current status.

Yes, the Schaublin machines were/are really high-class tools, and were made to spec, not price.
Mine is of course no longer according to factory condition in any respect, but is a really good excersize, and will be as good as I can get it. A bit complicated, I'd say, and of course on the heavy/big side for a small hobby shop..
Click to expand...
 
Concluding the work on the column ways:

Inner guideways
http://www.youtube.com/watch?v=ELMdbLwoUoQ

Note: at 02:48 in the video
The straightedge markup was not exactly like this, I had "fingered" with it first..

This type of straightedge (solid, "railroad track" profiled) is also different from the usual scraped ones in that it is ground..and therefore smooth, and the only blue color that "sticks" is the Canode. Not Dykem nor Skavin (a Swedish bought special.. this is OK on the others, but a little more faint colored than Canode, so I prefer the latter)

My take on using gloves to prevent heat from the hands possibly distorting the straightedge is justa trial effort.. I could honestly not see a difference during my tests, but one of you pros could maybe prove me wrong here.

Note: at 10:25 in the video
Need to test that you work at 90 degrees. Some more scraping was needed.

Note: at 11:50 in the video
Within 1/100 mm (not 1/1000 as spoken), which is about 4/1000"

Rear ways, left side
http://www.youtube.com/watch?v=oJGFA8vIwpQ
It is important to be conscious about scraping straight down (in this case), so to maintain the parallelism to the front flats along the width of this way surface. I used both a micrometer and an indicator and more..) to get validate my measurements.
The wear pattern is as expected, and the hold down plates that ride onto the rear ways are probably more worn.

Note: at 05:45 in the video
Using the technique (or trying to) examplified by Herr Müller (Yes. Please see his excellent videos on scraping! Absolutely mandantory watching..) to make a groove in the 90 degree transition. The hold down plates doesn't go that far down, but anyway..

Use of a mirror was really helpful to get a good view!

Rear ways, right side
http://www.youtube.com/watch?v=zOm5iZt_mJA
I did make, and used, some handles to my other small straightedge whereas for this it may be bigger problem

Note: at 02:00 in the video
Thought first I could do the rear ways horizontal. This proved very ackward, even if I could somehow get the casting up to a comfortable height, the weigh tdistribution onto the ways would not have been an OK procedure to follow

Please note that it is preferrable to always use a straightedge longer than the area to be tested. In my case, I had to break it up. This means you have to be careful! First establish an area that is "true", then "move" from this at intervals.
 
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