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21-04-2012 #1
Hi All,
I bought a 260VMC a little while ago and converted it to Mach3. The problem was, The door of my workshop is only 65cm wide.
far too narrow to get the 260VMC thru it.... :(
I thought, no problem, I'll just take the mill out of its enclosure.... Nah! Boxford had the brilliant idea to cement the base and the back of the mill to the enclosure! Call Boxford, How do I get the mill out of the cabinet? ==>> Not possible sir!
Well, this was enough for me to give it a go.
1- move the table along the Y axis to both extreme position to expose the 5 M10 cap head screws. Take these off.
2- Place a scissor jack between the base of the mill (with a large piece of wood to protect and distribute the pressure) and the cabinet side.
3- start turning the screw a little bit at the time, slowly but surely! Crack!!! it's off! :-)
Now we have a 260VMC on the bench... :-) run a few test, run nicely!
Time to start the cleanup before doing anything serious with it...
First, full disassemble!
I'll add some pictures of the electronic if any interest... :)
Laurent
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21-04-2012 #2
Well i have more than a little interest, so post away i look forward to reading..
Always bear in mind that your own resolution to succeed is more important than any other - Abe Lincoln
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22-04-2012 #3
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22-04-2012 #4
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14-06-2012 #5
Hi there, did you manage to source some new screws for your 260 or did make do with the old, i only ask as my Z spat its balls out and im using a old lead screw as a temporary measure, but will replace all with new machined screws if i can find a reasonable priced source...
RickAlways bear in mind that your own resolution to succeed is more important than any other - Abe Lincoln
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15-06-2012 #6
Hi Ricardoco,
I found a company that makes 14mm ballscrew with a threaded nut but these were only rolled ballscrews not ground. But the original ballscrews on the VMC260 are rolled, so....
http://www.mooreinternational.co.uk/...6/FGI14X4.html
I keep my existing ballscrew for now, I can not detect much backlash so far, so should be OK untill I get enough money aaside to get some new ones...
An other option I found is a guy specialised in fixing damaged ballscrew. May worth a try?
http://cgi.ebay.co.uk/ws/eBayISAPI.d...:X:RTQ:GB:1123
RNRLast edited by rnr107; 15-06-2012 at 08:09 AM.
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15-06-2012 #7
wrong thread on the nut
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22-04-2012 #8
Here is the electronic...
Old stuff first:
Then the new stuff... I wanted to use rack mount 19" enclosure so it can be bolted underneath my bench, but could not find one big enough, so had to split spindle electronic in one box and steppers electronic in an other.
Got these nice rack mount enclosures from work. They've got extra holes on the front panel... I guess I will have to patch these at some point.
Laurent
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22-04-2012 #9
check the feel of the ballscrews, they are the weak link on that machine. Any notching or play they'll need to be replaced, i did one years ago and used ground 14x5mm pitch screws, also you'll need to sort out homing switches/sensors. Is your spindle R8, 30 int or coventry?
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22-04-2012 #10
Hi i2i,
The spindle looks very much like the EasyChange itself but without the grove for the balls.
It was a pain to take off! See picture bellow:
Where did you get your ballscrew from? did the new ballnut attach to the existing holders or did you make some new ones?
My X axis has no play at all, the Z got some play between the nut holder and the nut but not between the nut and the screw... How does the nut hold onto the holder? Is it screw in? I don't seems to be able to tight it...
The Y axis got some play.
Something else, I find the spindle a bit stiff. Is it supose to spin freely? I mean if I take the gear on the top of the spindle in my hand and give it a good twist, is it supose to spin a few turns? Cause right not, I can turn it easly, but it won't spin multiple turns if you see what I mean... The cap head screw on the top is it used to load the bearings?
LaurentLast edited by rnr107; 22-04-2012 at 09:51 AM.
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