X2 belt drive conversion

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spuddevans:

--- Quote from: craynerd on June 08, 2009, 02:05:12 PM ---Nice job Tim - did you get your grub screws online, I need to find a supplier.

--- End quote ---

--- Quote from: CrewCab on June 08, 2009, 02:11:43 PM ---Have a look Here

--- End quote ---

Would you believe it, that's the exact place I got my grub screws from :thumbup:

CC beat me to it :thumbup:

Tim

CrewCab:
Chris,

Before you melt the plastic have a look at this link

I've dealt with each of them and in my experience they are both good people :headbang:

CC

spuddevans:
Not a lot done today, just hacked off a bit of round ali bar, chucked it in the 4jaw and turned down a section, drilled and tapped it M6.

Then I turned it around and gripped it by the smaller diameter that I just turned down, faced the other end and then knurled the body. This is where it fits

I loctited a M6 stud into the "ear" for the Knurled knob to attach to. Then I just cleaned up the faces of the belt-drive componants.

Tim

spuddevans:
I got a bit more done yesterday, I started on a spring-loaded spindle lock.

I started by finding a suitable reclaimed spring that had an inner diameter that was the same as the width of the slot milled into the large pulley (about 8mm). I then rigged up the belt-drive base on an angle plate on the mill to drill it and found that I didnt have enough headroom on the z-axis to use a conventional drill-chuck :bang: It then occurred to me to try the ER32 collet chuck as its a lot shorter than a drill chuck and there was just enough room if I held most of the drill in the chuck and only had about 40mm of the drill showing.

(ps. this photo is a mock up of my setup as I had taken off the clamps before realising I hadnt taken a picture, that's why it's held with just one engineers clamp.)

So I drilled 9.5mm(the outer diameter of the spring plus a tiny bit for clearance) to 15mm depth, then swapped out for a 8mm bit and drilled through the final few mm.

Then I drilled and tapped 2 M5 holes either side of the locking pin hole.

Then it was back onto the lathe and I chucked up a short length of some unknown steel and turned it down to 7.5mm on one end, a small 9.4mm section and then turned the piece around and turned the other end down to 7.5mm. Then I rounded the ends over with files, and then sanded it smooth.

Then I just took a small piece of 2mm thick ali, drilled 2 M5 clearance holes and a 8mm hole (which I also reamed 8mm as the drill left a slightly triangular hole) and mounted the whole lot onto the base.

Tim

Darren:
Very nicely done, I wish I had a spindle lock on my mill.... :thumbup:

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