Optimum BF20L CNC conversion.

[NeoTech]

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. ;)

[Rob.Wilson]

Looks like your off to a good start Andreas   

When did you get the Aciera ?  dam fine machine


Rob

[NeoTech]

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. ;)

[Rob.Wilson]

I your Aciera mill thread , very nice 


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


Rob

[NeoTech]

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

[NeoTech]

And a little bit more has happen on my BF20 CNC conversion - slow and steady she goes.

[NeoTech]

And well, better late than never.. Z axis done..

[loply]

Are those pulleys home made perchance?

[NeoTech]

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

[John Rudd]

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... Keen to see how it all turns out

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

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

[NeoTech]

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.