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22nd September 2007, 11:02 PM #1Product designer retired
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- Nov 2006
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- Heidelberg, Victoria
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- 79
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- 2,251
Mini lathe/mill project No.3 Knurling tool
Dear members,
This little knurling tool works extremely well, even I was surprised. It was designed to fit onto the saddle of my Unimat 3 lathe via two screws and two tee nuts. Just change the body to suit your lathe.
It is of the clamping style, which has a few benefits over the conventional single sided style, plus, there is a bonus. With knurling rollers on each side of the work, very little strain is applied to the chuck spindle, and more importantly, the work.
This means that very small diameters can be knurled without bending anything.
I am not going into construction details, except to say that some improvisation took place.
The grooves for the circlips were cut with a small hardened screw driver bit. The sort that fits into your battery operated drill, just perfect.
Attached are a couple of drawings showing the assembly and details, and some pictures.
Knurling at low speed took very little pressure to produce a nice crisp knurl, even in mild steel.
I said there was a bonus, if the entire knurling tool is swung around on an angle, say 15 degrees, a diamond pattern will result. Not bad eh from a set of straight knurling rollers?
Might not be orthodox, but it works.
There are a few more projects to come, I just have to finish them,
were does the time go?
Regards,
Ken
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22nd September 2007 11:02 PM # ADSGoogle Adsense Advertisement
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22nd September 2007, 11:42 PM #2
Ken,
Well done. The drawings are a credit and very easy to follow.
Cheers
Graeme
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23rd September 2007, 12:49 AM #3Product designer retired
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- Nov 2006
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- Heidelberg, Victoria
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- 79
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Oops,
Have fixed a couple of dimensions, that were either missing, or were not correct.
The latest revised files should be OK.
Ken
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23rd September 2007, 10:00 AM #4
Very nice Ken.
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23rd September 2007, 10:13 AM #5
Thanks! A great project for the to do list!
Have a nice day - Cheers
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24th September 2007, 02:40 PM #6Intermediate Member
- Join Date
- Feb 2006
- Location
- Hobart,Tas
- Posts
- 28
Nice work Ken, very thorough, appreciated.
24 hours in a day, 24 beers in a carton ...Its no coincidence
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9th May 2009, 09:41 PM #7
Well, it took 18 months but I finished your design yesterday. It worked brilliantly, firstly on brass and then on steel. Thanks!
Cheers
Graeme
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10th May 2009, 06:15 AM #8Novice
- Join Date
- Feb 2009
- Location
- Tacoma
- Age
- 45
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- 11
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10th May 2009, 10:45 PM #9
No pictures as yet,but Ken's photos are pretty good. The only mod I've made was to attach the arms to a plate with a piece of 10x10mm steel on the other side which fits into my QCTP.
Cheers
Graeme
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12th May 2009, 06:21 PM #10Senior Member
- Join Date
- Nov 2008
- Location
- Canberra
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- 184
Good stuff Ken. So have you downsized from the Hercus?
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13th May 2009, 03:35 AM #11Product designer retired
- Join Date
- Nov 2006
- Location
- Heidelberg, Victoria
- Age
- 79
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- 2,251
Nah, got both the Unimat and the Hercus. Picked up the Hercus a long time ago in need of refurbishment, and as an interim, purchased the Unimat just to play with.
Turns out the Unimat is a bit more than a toy, in fact it's a precision made lathe with milling facilities, just scaled down a tad. Can be picked up in one hand! Just great for small stuff.
Ken
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14th May 2009, 09:33 PM #12
great tool
happy turning
Patrick
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19th May 2009, 06:15 PM #13
Thats a great little tool,
it would go great on my little C2 Lathe too
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3rd June 2012, 05:17 PM #14Dave J Guest
Nice work Ken, I thought I would bump it to the top since everybody is making them this week it seems, LOL
Dave
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4th June 2012, 05:34 PM #15GOLD MEMBER
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- Jul 2006
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- Adelaide
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