Author Topic: Optimum BF20L CNC conversion.  (Read 14984 times)

Offline NeoTech

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Optimum BF20L CNC conversion.
« on: October 21, 2012, 11:26:14 AM »
So after a year and a half after i bought the BF20L machine and figured i couldnt do crap without another mill ive come around to do the CNC milling.
The small Aciera F3 mill in conjunction with the small lathe allows me to produce all the parts needed for doing this conversion..

So so far weve made alteration to the base of the BF20L mill to fit ballnuts and clear space for clamping blocks and other whatnots, brass nuts is made for the ballscrews, and basemounts for the Y-axle is in place..



The idea for this cnc conversion is that i wanna be able to make casting moulds for rubber and silver parts by injecting rubber directly or making wax parts for a casting tree. I hope this time around it will get finished as well. ;)
Machinery: Optimum D320x920, Optimum BF20L, Aciera F3. -- I have not failed. I've just found 10,000 ways that won't work. http://www.roughedge.se/blogg/

Rob.Wilson

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Re: Optimum BF20L CNC conversion.
« Reply #1 on: October 21, 2012, 11:52:32 AM »
Looks like your off to a good start Andreas  :thumbup: 

When did you get the Aciera ?  dam fine machine :thumbup:


Rob

Offline NeoTech

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Re: Optimum BF20L CNC conversion.
« Reply #2 on: October 21, 2012, 04:30:38 PM »
Oohh i got the Aciera, 3-4 weeks ago or so. There is some posted question thread on it, and its move here on the forum. Its a nice little machine.. can run a 20mm cutter 15mm deep in full "throttle" straight through a alu block. its stable enough i guess. Tried with steel, not that tough or well the machine are the cutters isnt. ;)
Machinery: Optimum D320x920, Optimum BF20L, Aciera F3. -- I have not failed. I've just found 10,000 ways that won't work. http://www.roughedge.se/blogg/

Rob.Wilson

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Re: Optimum BF20L CNC conversion.
« Reply #3 on: October 21, 2012, 04:38:58 PM »
I your Aciera mill thread , very nice  :headbang:


Just out of interest , what are you going to be casting ?


Rob

Offline NeoTech

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Re: Optimum BF20L CNC conversion.
« Reply #4 on: October 21, 2012, 04:41:43 PM »
Out of rubber, fishing lures - "jigs".. rubber lures..  =)

And out of wax, mostly jewelry designs for my girlfriends projects i guess.

Im more interested in making the tooling surrounding the processes than the.. final result itself ;D
Machinery: Optimum D320x920, Optimum BF20L, Aciera F3. -- I have not failed. I've just found 10,000 ways that won't work. http://www.roughedge.se/blogg/

Offline NeoTech

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Re: Optimum BF20L CNC conversion.
« Reply #5 on: October 28, 2012, 06:59:30 AM »
And a little bit more has happen on my BF20 CNC conversion - slow and steady she goes.


Machinery: Optimum D320x920, Optimum BF20L, Aciera F3. -- I have not failed. I've just found 10,000 ways that won't work. http://www.roughedge.se/blogg/

Offline NeoTech

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Re: Optimum BF20L CNC conversion.
« Reply #6 on: March 05, 2013, 08:46:51 AM »
And well, better late than never.. Z axis done..


Machinery: Optimum D320x920, Optimum BF20L, Aciera F3. -- I have not failed. I've just found 10,000 ways that won't work. http://www.roughedge.se/blogg/

Offline loply

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Re: Optimum BF20L CNC conversion.
« Reply #7 on: March 05, 2013, 03:35:06 PM »
Are those pulleys home made perchance?

Offline NeoTech

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Re: Optimum BF20L CNC conversion.
« Reply #8 on: March 06, 2013, 06:03:18 AM »
They are home made..
The procedure is quite simple, calculate the pitch and pitch compensation, drill holes... mill the same holes.. Ream the holes.. (and yes its nescessary for precision). And then put the blank in the lathe and turn it down until you are in the correkt depth of the hole or measure from OD of your stock to the pitch centerline you just have drilled, milled and reamed holes on..

That belt is a HTD 5M not the kind with completely round teeth more like a "boob" profile.. (if you have ever stared down a womens blouse out of mistake .. you know what im talking about) ;D
Machinery: Optimum D320x920, Optimum BF20L, Aciera F3. -- I have not failed. I've just found 10,000 ways that won't work. http://www.roughedge.se/blogg/

Offline John Rudd

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Re: Optimum BF20L CNC conversion.
« Reply #9 on: March 06, 2013, 06:41:23 AM »
They are home made..
The procedure is quite simple, calculate the pitch and pitch compensation, drill holes... mill the same holes.. Ream the holes.. (and yes its nescessary for precision). And then put the blank in the lathe and turn it down until you are in the correkt depth of the hole or measure from OD of your stock to the pitch centerline you just have drilled, milled and reamed holes on..

That belt is a HTD 5M not the kind with completely round teeth more like a "boob" profile.. (if you have ever stared down a womens blouse out of mistake .. you know what im talking about) ;D

Quite a nice machine you got there Neo... :thumbup: Keen to see how it all turns out

I like the way you made the pulleys... :bow: No special ground up cutter needed...

Not sure what you mean about the boob job.... :lol: :lol: :lol:  I never mistakenly look down a woman's blouse. (Good job 'Er indoors aint around while I type...)
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Offline NeoTech

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Re: Optimum BF20L CNC conversion.
« Reply #10 on: March 06, 2013, 09:01:54 AM »
Here we go.. A Excel file with pitch od and pitch compensation for 5mm pitched belt pulleys..
its the same for HTD, T5 and M series belts, tooth profiles differ though.. my image above is for M5.

https://docs.google.com/spreadsheet/ccc?key=0AsAT2DIhIrU0dGVCSXBmaGpzWjVLX002SEM2Q2hVWFE&usp=sharing#gid=0

Enjoy. :coffee:
Machinery: Optimum D320x920, Optimum BF20L, Aciera F3. -- I have not failed. I've just found 10,000 ways that won't work. http://www.roughedge.se/blogg/