626 Mill Z Axis Feed Nut - Printable Version

626 Mill Z Axis Feed Nut - Printable Version

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+--- Thread: 626 Mill Z Axis Feed Nut (/thread-842.html)

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626 Mill Z Axis Feed Nut - doubleboost - 09-16-2012

Hi
Lads
The Z axis nut on my 626 is badly worn . I have heard tales of the nut failing and the table dropping (narrowly missing the bollocks of the operator) Jawdrop

I stripped the screw and nut out and was pleased to see a brass sleve in the cast iron nut housing
Simple repair machine a new nut from some propper bronze Smiley-dancenana

My mill is fitted with a 6 inch riser block (it is possible to wind the table up untill the feed nut disengages
Rob Wilson took one look at it and said "Do a propper job and make a longer screw as well"
The pictures tell the story so far
[Image: IMG_4302.jpg]

Next job the new nut
John

RE: 626 Mill Z Axis Feed Nut - stevec - 09-16-2012

John looks like a good job! I was gonna ask how do you get the nut on the screw Slaphead

but then I realized you just haven't cut the right end of the screw yet.:17428
Right?

RE: 626 Mill Z Axis Feed Nut - DaveH - 09-16-2012

John,
Well done mate that is a fine job

Was it ordinary mild steel you used?

DaveH

RE: 626 Mill Z Axis Feed Nut - doubleboost - 09-16-2012

(09-16-2012, 03:19 PM)DaveH Wrote: John,
Well done mate that is a fine job
Was it ordinary mild steel you used?

DaveH

Hi
Dave
I used stainless (even i can make that look shiney) Drool

The thread is 8 tpi acme
John

RE: 626 Mill Z Axis Feed Nut - EdK - 09-16-2012

That's an interesting tool bit holder you've got there John. Is that bought or did you make it. I know, there's probably a thread on the forum about it but I'm too lazy to go hunting. Blush

RE: 626 Mill Z Axis Feed Nut - doubleboost - 09-16-2012

(09-16-2012, 03:31 PM)EdK Wrote: That's an interesting tool bit holder you've got there John. Is that bought or did you make it. I know, there's probably a thread on the forum about it but I'm too lazy to go hunting.

Ed

Hi
Ed
That is propper old school
I borrowed it off Rob
After using it i will make my own
It takes all the nasty vibration out of the cut
John

RE: 626 Mill Z Axis Feed Nut - Micktoon - 09-16-2012

Hi John , all I can say is QUALITY JOB Worthy

, looks the dogs B******** , I noticed the tool holder too, glad it works so well ........ Oh no , not another thing to add to my do list Chin

I look forward to seeing the nut getting done
Cheers Mick

RE: 626 Mill Z Axis Feed Nut - EdK - 09-16-2012

(09-16-2012, 03:38 PM)doubleboost Wrote: Hi
Ed
That is propper old school
I borrowed it off Rob
After using it i will make my own
It takes all the nasty vibration out of the cut
John

Thanks John. I see a tool project coming up including the required pictures, I assume. Big Grin

RE: 626 Mill Z Axis Feed Nut - stevec - 09-16-2012

Hey! I have one like that! I don't remember ever using it. It was too big for the lantern TP holders or even the first turrets I had.
Here's a pic.
[attachment=2986]

It's got an insert in the opening that is probably removable if more spring is required.
If John says "It takes all the nasty vibration out of the cut" then it's good enough for me to dust it off and give it a try.
Thanks John. Thumbsup

And Thanks Ed, for making me go back and have a look Thumbsup

(I told you guys I NEVER throw anything out)
Steve

RE: 626 Mill Z Axis Feed Nut - krv3000 - 09-16-2012

well dun john a brill bit of work ther and a well set out post