Extend Y-axis handle on 833TV?

rronald

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I was out in shop today starting to install a front way cover on my 833TV. Pretty easy to attach the material to the front of the sliding table. So I did that first which let me play around with the other end to see how to best attach it.

My key problem is that there's almost no room left for the way cover to fold into. Crank Y all the way out (towards me) and the handle has precious little clearance.

And....as I messed with this, it occurred to me that the "closeness" of the handle to the table already costs me something. Y travel is the most limited dimension on the 833 and I've lost some (perhaps an inch) with the safety switch for the x-axis power feed. The travel is lost because the ball end of the handle starts to intersect with said switch....preventing further movement of the table outward. There may be possibilities for moving that safety switch (although the back end of my table has a DRO track in place) or finding an alternate switch that would have a lower profile.

But, it occurs to me that I could move the handle further out from the table. Placing it 1.5" to 2"further out would allow me to regain some Y-axis travel and provide space for the landing of the way cover.

I use a DRO, so I don't absolutely need to move over the scale markings. But it might be that the easiest extension would be an adapter that slipped over the existing shaft and then was turned down to match the shaft so that the existing handle could move over. If I thru drilled the new piece, I could attach everything with a longer version of the existing M8 bolt that is used now. It would stick out more, but I don't think it's likely to be a problem for me.

Thoughts?
 
Or you could just remove the X limit switch, mine is dangling from it's cord on the floor below the power feed soon to be removed. Also moved the X axis DRO scale up front freeing up more Y travel.
 
Or you could just remove the X limit switch, mine is dangling from it's cord on the floor below the power feed soon to be removed. Also moved the X axis DRO scale up front freeing up more Y travel.
I'm not sure I understand.

My X-Axis DRO scale is mounted behind the table, but it doesn't restrict the table moving all the way back (away from operator). And if I moved the DRO scale to the front (the side close to the operator), it would definitely restrict moving the table outward (towards the operator). Quite a bit more than the X-limit switch does.

But, even if you convince me that I'm understanding you wrong, removing the limit switch would not give me any more space for "landing" the way cover bellows. In fact, since the table would move further out......it would reduce the amount of space for the attachment.
 
Good idea. This shows the interference between switch and handle ball. If I take the handle off, there's close to a full inch of additional travel possible. You can push the ball past the switch for one more revolution of the handle since the plastic "gives", but that's it (unless the handle is removed.)
tightFit.jpg
 
I do like those handles, but with my smaller round handwheels everything (DRO scale, read head etc.) all clears over the top of the handwheel. Y comes all the way out until it hits the mechanical stop on the feed screw.
 
I'm looking at extending the handle 40 to 50mm. 20 to 25mm would support recovery of the travel. The balance would provide room to fix the way cover bellows to the base of the mill.
 
I'm looking at extending the handle 40 to 50mm. 20 to 25mm would support recovery of the travel. The balance would provide room to fix the way cover bellows to the base of the mill.
What's your handwheel look like?
 
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My 833 didnt even come with that way cover. i just try to keep it clean in use. I also would prefer to mount the limit switch on the back of the table, but am waiting to get the DRO scales to try and get it all mounted on the rear of the table neatly. Anyone done that?
 
My 833 didnt even come with that way cover. i just try to keep it clean in use. I also would prefer to mount the limit switch on the back of the table, but am waiting to get the DRO scales to try and get it all mounted on the rear of the table neatly. Anyone done that?
I mounted my X scale on the back...then moved it to the front. If for no other reason than the rear is under assault by chips and cutting oil it's a big nasty mess back there. Relatively clean up front. On my mill this also freed up more Y travel to the rear, it's not an 833 though.
 
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