Stanko 3G71 surface grinder - partial restoration.. just table and saddle cross slide ways

  Рет қаралды 7,013

Jan Sverre Haugjord

Jan Sverre Haugjord

3 жыл бұрын

Sometimes I am called in for some outside help. This time to evaluate the wear on a surface grinder. It turned out to have the normal amount of wear / wear pattern but also a quite bad pitting on these sliding surfaces. Quite possibly the result of the design allowing an amount of grinding dust and grime to mix in with the coolant, but also because of (the usual) general lack of maintenance. Anyway, the new user was eager to get it going and happy for "any improvement". It was more of a "there and then decision to make an effort" and "with whatever means available for me" with short notice. I brought only the most needed equiment but as I had no Kingway or a suitable sled for this machine I knew it would be a little tricky and quite possibly not the "best practise" job.. It was a "stunt project really, starting in the late evening and finishing in the early morning hours.. so the results were the outcome of "what was possible to do in this "space of time", needing some "out of the box thinking" and also cutting some corners.. What can you do.. it was "free of charge" .. haha!

Пікірлер: 27
@dimooonz
@dimooonz Жыл бұрын
забавно! 3г71!!!! из СССР! лучше конечно 3е711 или 3е721
@lukerickert5203
@lukerickert5203 3 жыл бұрын
Having recently spent a good bit of time rebuilding my slightly smaller but similar East German grinder it is cool to see your process.
@jansverrehaugjord9934
@jansverrehaugjord9934 3 жыл бұрын
Thnks Luke. But I would say this "job" hence video is not descriptive of "best practise" or "how to do it". It was more or less "a stunt project" and the process followed suit, ie. what was done in a "night shift". The obvious addition I would have done was to plan ahead and build/use5 a level "sled"/Kingway tool instead of building up a combination of cylinders, beam straightedge and blocks and shims
@lukerickert5203
@lukerickert5203 3 жыл бұрын
Stunt or not so long as you don't make it worse it is a good thing
@jansverrehaugjord9934
@jansverrehaugjord9934 3 жыл бұрын
@@lukerickert5203 Of course.. it should be much better now
@somebodyelse6673
@somebodyelse6673 3 жыл бұрын
@@jansverrehaugjord9934 - Too bad that time was such a limit. I would be interested to see a reference part ground before and after the work. Good job on getting things started!
@jansverrehaugjord9934
@jansverrehaugjord9934 3 жыл бұрын
@@somebodyelse6673 Thanks. We did some grinding of a piece before, but no footage, sorry. I guess there will be ample time to view results on pieces in the future though, so can update later. PS! The shop is a bit of a distance away, and my friend is also there all the time.. the main thing I do there is having my Myfords ground 😀 so this was a "sidetrack" project really.. thatbjust evolved as we went along, but I thought it was nice to share anyhow
@elanman608
@elanman608 3 жыл бұрын
One method I have seen for accessing awkward areas for scraping is to set up trestles and boards just above the ways and scrape kneeling down.
@jansverrehaugjord9934
@jansverrehaugjord9934 3 жыл бұрын
True. I also tried that on this machine (and others).. trouble is I am getting old (and stiff.. in the wrong places)
@elanman608
@elanman608 3 жыл бұрын
@@jansverrehaugjord9934 aren't we all :)
@fabioth283
@fabioth283 3 жыл бұрын
Nice job.if i can say,you can check the flat slideway with a level,on step by step.
@jansverrehaugjord9934
@jansverrehaugjord9934 3 жыл бұрын
Thanks for the comment! Yes, I know what you mean. Normally I would do a ot more measurements, but this was , as I wrote, something of a stunt project that was done in the matter of some late night hours, so all was not optimal
@TheMudfly80
@TheMudfly80 Жыл бұрын
Is it possible to scrape in the table, making sure there is vertical alignment between flat and V with a kingway type tool, and then use the table to spot the saddle? This is how it was suggested to me to do a similar grinder.
@jansverrehaugjord9934
@jansverrehaugjord9934 Жыл бұрын
Sure. We ground the table as a bed-grinder was available. Many ways to get this done, I suppose. If RK makes/sells more of these Kingway tools I will also buy one!
@MrMeuchelmord
@MrMeuchelmord 3 жыл бұрын
Sorry for the background noise 😅
@jansverrehaugjord9934
@jansverrehaugjord9934 3 жыл бұрын
That's OK... sounds like it should to me!
@taunusmechanics3121
@taunusmechanics3121 3 жыл бұрын
Thank you very much for the explanation ! Do you think the cause for the scoring was lack of lubrication or dirt ?
@jansverrehaugjord9934
@jansverrehaugjord9934 3 жыл бұрын
Thanks for the comments! Both, I would guess, but also mixing the grinding dust in the coolant and this getting on the ways
@somebodyelse6673
@somebodyelse6673 3 жыл бұрын
I don't think there was any lack of dirt.
@jansverrehaugjord9934
@jansverrehaugjord9934 3 жыл бұрын
@@somebodyelse6673 I guess not 😁
@jakobmrk526
@jakobmrk526 Жыл бұрын
Hello Jan. Did you find any litterature / manuals for the stanko Surface grinders? I recently Purchased a Stanko 3E710v-1 surface grinder and are looking for info for this machine.
@jansverrehaugjord9934
@jansverrehaugjord9934 Жыл бұрын
Hello there. I didn't see any manuals, sorry. This is not my machine, so possible the owner has elsewhere. I wouldn't go there anymore, but maybe you can seek out info on chipmaker.ru ?
@jakobmrk526
@jakobmrk526 Жыл бұрын
@@jansverrehaugjord9934 Thank you. I found some documents in there, but only photocopies in russian..
@anelpasic5232
@anelpasic5232 2 жыл бұрын
Does the table rely on gravity and it's weight to keep it in place or is there something like a gib to keep it from lifting up? I know that grinders don't tend to lift up the workpiece like a milling machine does, but I just want to make sure.
@jansverrehaugjord9934
@jansverrehaugjord9934 2 жыл бұрын
As far as I remember it is only gravity
@anelpasic5232
@anelpasic5232 2 жыл бұрын
@@jansverrehaugjord9934 Thank you very much for the reply.
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