El Beast - Initial design phase, comments and critique welcomed!

[charlieuk]

great work very nice , what motor mounts are you using?

[Zeeflyboy]

Cheers. They are MBA12-C mounts with FK12 bearing blocks and matching FF12 at the other end.

[Zeeflyboy]

Well, wasn't needed at work today so thought I'd be productive!

Machined one set of wings:

Initial setup for drilling/milling




Fastened down with m6 bolts:




I totally love adaptive clearing on fusion 360:




flipped over and machined on second side:




finished parts:




And some fitted pics:






I've ordered a new spindle, mine is definitely not quite happy and I'm concerned that soon it may start causing actual problems. There goes next months budget

[Zeeflyboy]

I'm using a carbide insert threading tool.





The actual cutting of the thread seems fine, just a bit of a faff setting up change gears if one wants to change between different thread pitches or go back to a longitudinal feed.

Both brass and stainless can cause galvanic corrosion with aluminium, not sure if brass is significantly worse or not. Was probably going to use a smidge of anti seize compound whatever material I end up using...

Do you have a good source of Info for final outer diameter and depth of cut for threading?

Edit - so I found this resource http://www.roymech.co.uk/Useful_Tabl...hread_tol.html

So if I understand correctly, for example with this m5x0.8 thread I need here:

- Turn the portion to be threaded to 5mm.

- Thread with 0.8mm pitch until a depth of 0.69mm

- Skim across to reduce the outer diameter to say 4.8mm

Is that the correct process?

[mekanik]

I always reduce the OD before screw cutting(H/8 in that link) then touch the tool on the OD, zero the dials and cut as mentioned earlier using the ofset topslide for infeed, if i have a lot to do i will usually knock up a gauge(of sorts) by tapping some stock with the taps i am using to make the matting holes, for anything large i have a couple of sets of thread parallels and some ovee's for some of the smallish stuff as well and just screw down till you get the effective dia in the ball park.
regards
Mike

[Zeeflyboy]

Cheers for the info.

[Zeeflyboy]

So, first things first - big delivery of eco-cast plate! Enough to keep me going for a couple of months I'm sure.

Managed to have the big bugger (the bed tool plate) fall over on my foot as I was moving the packages around. That hurt...




I also finished off a couple more shoulder screws for the X-axis slider plate, full set now... just waiting for a 1.5mm end mill to arrive to machine the slots in the top.




And I've designed this little setup for stop/limit switch on the Y-axis using hall effect proximity switches. The brass dial is threaded m6x1 to give 1mm movement fore-aft per rotation for simplicity's sake when setting up, and has a small magnet embedded in the face for the hall effect sensor. Small spring provides tension on the thread.

The mounts themselves will be 3d printed.




And they just tuck in behind the rail mount plates here (both front and back, only the back one shown).

[JoeHarris]

So, first things first - big delivery of eco-cast plate! Enough to keep me going for a couple of months I'm sure.

Managed to have the big bugger (the bed tool plate) fall over on my foot as I was moving the packages around. That hurt...




I also finished off a couple more shoulder screws for the X-axis slider plate, full set now... just waiting for a 1.5mm end mill to arrive to machine the slots in the top.




And I've designed this little setup for stop/limit switch on the Y-axis using hall effect proximity switches. The brass dial is threaded m6x1 to give 1mm movement fore-aft per rotation for simplicity's sake when setting up, and has a small magnet embedded in the face for the hall effect sensor. Small spring provides tension on the thread.

The mounts themselves will be 3d printed.




And they just tuck in behind the rail mount plates here (both front and back, only the back one shown).

Good to see you're spreading into the house!! Like your sensor setup - how will you lock them in place once set?

[tt_mikechandley9074]

New to fusion here...Truly admire your skills! All of them.

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[Chaz]

New to fusion here...Truly admire your skills! All of them.

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Agreed