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Member postings for Roberto dasso

Here is a list of all the postings Roberto dasso has made in our forums. Click on a thread name to jump to the thread.

Thread: Disassembling of Minimill / X2-clone / XJ-12 Ballbearings
18/06/2010 10:07:24
Yesterday I have  checked the run out  of the stock spindle and bearings
 
This is the video

It seems very good (the dial indicator is metric 0.01 mm).
The accuracy report of the machine says 0.01 mm at the end of the spindle, and 0.02 mm 100 mm to the end of the spindle.
 

09/06/2010 21:03:55
Posted by Peter G. Shaw on 09/06/2010 20:37:26:

 
Does this help?
 


 
Hi Peter
 
Yes.. it helps a lot!!!!
ehehe
Thank you very much
 
Regards
Roberto

Edited By Roberto dasso on 09/06/2010 21:04:19

09/06/2010 14:18:26
Posted by Peter G. Shaw on 09/06/2010 12:48:52:
Hi Roberto,
 
Agree with the dials, but still difficult to use. I have a conversion table on my mill giving the number of divisions for varying amounts of travel, eg say 1mm and 0.25 mm. So if I want 1.25mm, I add the two numbers together. Job done.
 
Haven't checked spindle run out.
 
Regards,
 
Peter G. Shaw
 
Hello Peter
it is a very good idea.. i will do the same,  your table is very  helpful !
Thanks
Regards
Roby
08/06/2010 21:10:53
Ok.. i got the mini-mill today..
It is not bad, it seems a good  little machine
I measured the spindle runout (outside): less than 0.01 mm.. the report included  says 0.01 at the end of the spindle and 0.02 100 mm to the end of the splinde
 
Anyone has checked the spindle runout of this kind of milling machine?
 
About the dials.. on the cross table are graduated 0.02 mm.. 75 x revolution total 1.5 mm/rev (0.02*75)  
75 of course is the number of the minor graduations, not 0.75 mm /rev

the vertical fine feed.. 0.025  x 60 ..again 1.5 mm/rev
 
 
 
 

07/06/2010 07:52:01
Yes..for downloading that file, it is required to join the group..
05/06/2010 11:12:25
Very good link, John...
Thanks!

05/06/2010 06:21:46
Hello Neil
Thank you for your reply

About the belt conversion for the mini mill: yes, i think it is a much better solution than the gear drive, i will do that in the future.

Edited By Roberto dasso on 05/06/2010 06:29:40

04/06/2010 20:05:10
Hello my name is Roberto, i am from Italy
I just bought the same machine..i will get it next week i think.
I have a question:  is it necessary to change the ball bearings? because i have a mini lathe of the same producer (real bull) and the spindle is no too bad ( i  measured 0.005 mm runout on the spindle without the chuck)
Thanks
Roberto
 
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