Author Topic: Floating end mill holder.  (Read 41414 times)

Offline Doc

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Floating end mill holder.
« on: November 21, 2013, 08:21:06 PM »
  Well I decided to get a floating end mill holder made so I can sharpen some end mills up before starting up on my V-8 project again. Been wanting to build a sharpening set up for awhile so I'm going to give it a try. I'll be building or using the drawings for the book The Shop Wisdom Of Philip Duclos. I'll try to post some build info as I go along.
George

Offline Doc

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Re: Floating end mill holder.
« Reply #1 on: November 22, 2013, 07:19:44 PM »
Well the first thing to work on is the spindle housing. I just happened to have a piece of 2 x 2 steel not sure what type though. So after cutting a chunk off I spark tested it and I believe it to be so 4320 and the way it cut was not in a normalized state so this may be a treat drilling the small holes.

Ok squared up small holes next

Ok next mount in lathe and do the main bore, next time.
George

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Re: Floating end mill holder.
« Reply #2 on: November 23, 2013, 11:39:34 AM »
Ok dialed in spindle housing block and proceeded to bore out spindle dia.






 Bore finished out at 1.25 with about .0004 tapper in it. plans call for no more than .0002 so I am about double so if I run into trouble I'll finish hone it to get the tapper out. We shall see I'll turn up a practice spindle to check it out.
  Next will be the air grooves for this I will have to make a tool. I'm thinking I can grind up a piece of scrap carbide (don't throw scrap pieces of carbide away they come in handy) for the width and silver solder to a shank of some type. We shall see.
George

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Re: Floating end mill holder.
« Reply #3 on: November 23, 2013, 01:57:26 PM »
Ok ground up a piece of carbide and grabbed a 1/2 dia dowel pin.



Set up on welding table after a good cleaning with some alcohol.




All soldered up ready to be sharpened.





Ready to give her a try.

George

Offline Doc

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Re: Floating end mill holder.
« Reply #4 on: November 23, 2013, 03:30:51 PM »
Well that went really well cutter cut great not trouble at all.
 Now to run up a practice spindle just to make sure things will work ok.




finished grooves.





George

Offline Doc

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Re: Floating end mill holder.
« Reply #5 on: November 23, 2013, 06:22:25 PM »
Well turned up a spindle out of a piece of 17-4 stainless I had on hand (not what I'm using for the final piece) and I turned it between centers and .0015 under the housing bore size. I put it in the housing and applied air and at 25 PSI I has success it floated and will work.
 So now I feel a little better about being able to get where I want to be with this.
  So now I will start on the sharpening pedestal it will be attached to. After that I will attempt to make up some cross slides and an adjustable grinding head. With some luck I'll be able to sharpen some of my dull end mills when I get things done.


PS
  Not sure anyone is interested in this or not but I'll keep chugging along.  Someone maybe thinking of or has done one before.
 Until tomorrow then, I'll get started on the rest of the build.
George

Offline philf

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Re: Floating end mill holder.
« Reply #6 on: November 23, 2013, 06:28:11 PM »
PS
  Not sure anyone is interested in this or not but I'll keep chugging along.  Someone maybe thinking of or has done one before.
 Until tomorrow then, I'll get started on the rest of the build.

Doc,

I'm interested!

Cheers.

Phil.
Phil Fern
Location: Marple, Cheshire

Offline dsquire

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Re: Floating end mill holder.
« Reply #7 on: November 23, 2013, 09:15:04 PM »
George

It looks like people aren't saying much but looking at the numbers, they are watching. Even though I may not build one I am sure that I will pick up some tips that will come in handy on some project.  :D :D

Cheers  :beer:

Don
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Offline Sid_Vicious

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Re: Floating end mill holder.
« Reply #8 on: November 23, 2013, 09:51:44 PM »
With over 250 views you can be sure there is a lot of people following what you are making.
I don't have enough experience with machining yet so I just keep my mouth shut and try to learn from others.
Nothing is impossible, it just take more time to figure out.

Offline Pete W.

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Re: Floating end mill holder.
« Reply #9 on: November 24, 2013, 05:25:48 AM »
I'm looking.   :thumbup:   :thumbup:   :thumbup:  Be encouraged.
Best regards,

Pete W.

If you can keep your head when all about you are losing theirs, you haven't seen the latest change-note!

Offline awemawson

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Re: Floating end mill holder.
« Reply #10 on: November 24, 2013, 05:41:16 AM »
I'm here, I've read every post, looked at every picture and I am here for the full event - keep them coming  :thumbup:

Andrew
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Offline paulmo101

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Re: Floating end mill holder.
« Reply #11 on: November 24, 2013, 09:21:20 AM »
Hi

Great project I`m following and learning as we go.

Thanks for sharing

Paul

Offline Doc

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Re: Floating end mill holder.
« Reply #12 on: November 24, 2013, 10:54:20 AM »
Ok I started the day by changing the way I'm going to make the pedestal and tilting mechanism. Instead of using square 2x3 tube I'm going to be using some aluminum 7075 t651. And putting in some hard bushings for the steel balls to ride in. One of the reasons if I were to use tubing I wouldn't be able to put in some bushings for the balls to ride in and the plan I have in mind I'll use the bushings to adjust the height so things will set level when put together. Not sure if this would matter but with a floating spindle it would most likely advance or retract when let go of. Not sure this would matter or not but to be on the safe side doing it this way I will be able to adjust the height of the bushing easily thus making the spindle run true and level.
 SO off to the shop and make some chips.
  And thanks for the come backs guys some times when I post and I see not response I start to thinking no one is all that interested in this so maybe I should quit bothering them.
George

Offline flutedchamber

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Re: Floating end mill holder.
« Reply #13 on: November 24, 2013, 12:53:42 PM »
I'm watching, and learning.  You're never too old to learn. 

Offline kayz1

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Re: Floating end mill holder.
« Reply #14 on: November 24, 2013, 01:58:20 PM »
Me to watching, and learning I hope. Keep on keeping on. :ddb:
  Lyn.

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Re: Floating end mill holder.
« Reply #15 on: November 24, 2013, 02:01:53 PM »
Ok first block squared up to size.




put in transfer screws in housing block to transfer hole pattern to the top mount block.


holes drilled and counter bored from back side.


Things were going good until oops I started to drill the hole for the finger mount and was on the wrong side darn! Now I have a scar so I went to work to fix it. turned up a little plug fro some scrap.


Put plug in place and peened it over good.


After I milled down the repair it was not to noticeable.


Wel grab a bite to eat and back out to the shop.
George

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Re: Floating end mill holder.
« Reply #16 on: November 24, 2013, 04:42:40 PM »
Well I have the top mount block near completed put the bushing holes in set the heights and put the spring pocket in only thing left is a hardened slug for the cam pin to push against


Setting height of the 2 balls unit will swivel on.


Spring pocket done.



Bottom mount base squared up and roughed out.


So that will be it for today my wife wants to go out for supper so I suppose I'd better go get ready. Don't get a lot of shop time during the week so probably won't get back to it until next week end.
Thanks for the comments and looking hope I'm not boring everyone.
George

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Re: Floating end mill holder.
« Reply #17 on: November 28, 2013, 10:39:24 AM »
Ok got an early start before turkey time  :beer: and got the holes put in the bottom block for the bushings and the cam pin and also the cam leaver hole.


Setting the bushing heights.


Here I'm transferring spring hole from top block to bottom with transfer punch.


Here is the cam blank turned up.


Ok coffee break is over back out before the turkey is done.

George

Offline dsquire

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Re: Floating end mill holder.
« Reply #18 on: November 28, 2013, 11:00:39 AM »
George

I'm still here following along. Looks like your making steady progress.

We had our turkey over a month ago but you talking about it makes me hungry for another one. Guess I'll have to wait till Xmas. Hope you enjoy yours.  :D :D

Cheers  :beer:

Don
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Offline Doc

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Re: Floating end mill holder.
« Reply #19 on: November 28, 2013, 02:00:52 PM »
Going to be a late turkey seems wife claims she got a late start :coffee: so it will be more around supper time for me but thats ok. A little more shop time for me because you know after the turkey it will be re coop time :D

 Anyway I put in a key way slot and clamp slot in bottom block.



Then I set up cam in collet block and set in vise at about 8 degrees to drill handle hole to press fit a a handle in place.



Handle pressed in place I knurled up a knob for the end of it and pressed in place.


Now to figure out location of stop pins I'll press in a couple dowels for stops once I figure out the amount of rotation I'll allow the cam to move.


George

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Re: Floating end mill holder.
« Reply #20 on: November 28, 2013, 07:30:04 PM »
Ok we had turkey is it to late in the day to take a nap  :)?

Here is some of what got done before the turkey.

Drilled and installed cam stops.


Then when I was putting things together I noticed I made an error and a simple error couldn't believe I made such an error but there it was. How was I going to attach the mandrel block to the tilt mechanism I had drilled and counter bored holes to mount it but when you have the spring installed you can not get to the bottom of to install if you install the mandrel block first then you can not attach spring.  Well anyway I changed the spring counter bore to a milled pocket. And then decided to make a couple saddle clamps to hold mandrel block in place.

A short vid showing cam action forward tilted up for grinding back tilted down for indexing to next flute.








George

Offline dickda1

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Re: Floating end mill holder.
« Reply #21 on: November 28, 2013, 09:54:50 PM »
This is very nice work indeed. Have wanted to build one ever since I  saw a floating tool holder in  in an industrial shop.  :thumbup:
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Offline Doc

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Re: Floating end mill holder.
« Reply #22 on: November 29, 2013, 10:24:36 AM »
This is very nice work indeed. Have wanted to build one ever since I  saw a floating tool holder in  in an industrial shop.  :thumbup:

Thanks for the comments.
I have used one but not one that would move the cutter into and away from the grinding wheel like this one will.
I no longer work in the tooling shop I have been a tool design engineer for the past 10 years I'm coming up to the 40 years in the tooling trade in one way or another and still learning things.
 Thanks again.
George

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Re: Floating end mill holder.
« Reply #23 on: November 29, 2013, 07:26:04 PM »
Ok milled out a couple saddle clamps to hold top block in place.

I grabbed a couple pieces of 1/4 thick aluminum and squared up to over all width and height and scribed out the inside cut. I made 2 cuts for the sides I milled up to scribe line had my y axis set and just flipped part and repeated 4 times then unlocked y axis and connected cuts.



Here is a short vid of that cut being made.

video

Then milled sides down to size leaving tabs.

 

then drilled holes in tabs






George

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Re: Floating end mill holder.
« Reply #24 on: November 30, 2013, 11:33:43 AM »
Here are the clamps finished and in place.





George