Author Topic: "Cutting" knurling tool anyone ?  (Read 18587 times)

Offline earl

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Re: "Cutting" knurling tool anyone ?
« Reply #25 on: October 03, 2013, 09:11:50 AM »
Hi awe,  The HSM series was in 4 parts in M/A, M/J, J/A, & S/O 2010 issues.  Back issues are available:  https://secure.villagepress.com/store/items/list/group/292/page/2  Don't know if digital or reprints are available.  Village Press, the publisher can be reached here:  service@villagepress.com.

The knurls on this tool are geared together so it should be easier to adjust for differing diameters once set to center height.  Regards,  Earl

Offline awemawson

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Re: "Cutting" knurling tool anyone ?
« Reply #26 on: October 03, 2013, 10:04:55 AM »
Earl, many thanks for taking the trouble to find that - much appreciated.

There seem to be all sorts of designs out there, varying considerably in their ease of use and versatility. I certainly take your point John (S) that recessed knurls allowing you to work to a shoulder are probably the best concept. And for ease of adjustment, to have the knurl wheel mountings geared or otherwise linked makes a lot of sense.
Andrew Mawson
East Sussex

Offline awemawson

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Re: "Cutting" knurling tool anyone ?
« Reply #27 on: October 03, 2013, 11:14:46 AM »
I came across what looks like quite a nice implementation called the Boni cut knurler

http://www.bluechiptooling.co.uk/edit/files/brochures/Knurling.pdf

It gives the possibility of not only moving both wheels at the same time to adjust for stock diameter, it also allows both to be slid up and down together to adjust for centre height.

Pity there are so many zeros following the price  :(
Andrew Mawson
East Sussex

Offline unc1esteve

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Re: "Cutting" knurling tool anyone ?
« Reply #28 on: October 03, 2013, 11:26:39 AM »
What is the advantage of a cut knurl?

Offline awemawson

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Re: "Cutting" knurling tool anyone ?
« Reply #29 on: October 03, 2013, 11:37:48 AM »
Doesn't ruin your lathe spindle bearings by using enormous pressure like a push knurler, and cuts a better defined knurl. Mainly used on CNC lathes but equally applicable to manual ones
Andrew Mawson
East Sussex

Offline unc1esteve

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Re: "Cutting" knurling tool anyone ?
« Reply #30 on: October 04, 2013, 11:52:26 AM »
I use scissor type knurling tools.
I calculate the correct diameter, most of the time.
Only have manual machines, I can see the
advantage for cnc production.

Offline Arbalist

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Re: "Cutting" knurling tool anyone ?
« Reply #31 on: October 04, 2013, 05:30:27 PM »

Page 388 in the J&L catalogue, bottom of the page are two side knurling tools, these are the wheeels you want.
The wheels are on page 389 down the bottom, type 5.

http://www.mscdirect.co.uk/CGI/INPDFF?PMCTLG=00&PMPAGE=387&PMITEM=BMK-42080M

No idea what they are like, us mere mortals can't afford these.

I think I may have a pair of these. I bought them cheap at a show. They are a pair of plain German made Knurls with no champer on the corners. Now, where did I put them ...

Offline BillTodd

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Re: "Cutting" knurling tool anyone ?
« Reply #32 on: October 05, 2013, 04:57:30 AM »
You can just grind off the chamfer of a cheap knurl wheel.

Bill

Offline Arbalist

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Re: "Cutting" knurling tool anyone ?
« Reply #33 on: October 05, 2013, 03:14:37 PM »
Excellent! Guess mine will work fine then.

Offline AdeV

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Re: "Cutting" knurling tool anyone ?
« Reply #34 on: October 05, 2013, 03:17:23 PM »
How can you tell what wheel is a cut knurler vs as deforming knurler? I looked at the catalogue John linked to, found the right knurl wheels (I think), and they look exactly like every other knurl.... to my eyes anyway?

What am I missing?
Cheers!
Ade.
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Location: Wallasey, Merseyside. A long way from anywhere.
Occasionally: Zhengzhou, China. An even longer way from anywhere...

Offline awemawson

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Re: "Cutting" knurling tool anyone ?
« Reply #35 on: October 05, 2013, 04:10:40 PM »
The leading face is ground so that the exposed end of the knurl shape is sharp, whereas most squash type knurls have a bit of a bevel.

Andrew Mawson
East Sussex

Offline Sid_Vicious

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Re: "Cutting" knurling tool anyone ?
« Reply #36 on: October 14, 2013, 03:48:44 PM »
I have ordered a couple of straight cutting knurling wheels from this site: http://www.uxcell.com/search.php?keywords=knurling&sort=&page=1&view=  .The prices are included shipping so I will try to make a cutknurler as a future project. 
Nothing is impossible, it just take more time to figure out.

Offline stovebolt

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Offline Jonny

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Re: "Cutting" knurling tool anyone ?
« Reply #38 on: October 14, 2013, 06:06:20 PM »
Good link Jim I had a brisk browse to page 3 then noticed this piccy http://i461.photobucket.com/albums/qq336/gr8lifeLV/Cut%20Knurling%20Tool/100_0417.jpg

Is it me or is that knurling very poor.
Not only is the knurl not even, its got a flat and the pattern is irregular.
I can see the point of using these tools for long lengths, suppose it depends what your standards are and what its for, I wouldnt let that go.
Either its turned down after or the cut knurl has dimensionally gained like a conventional tool. I usually get a gain of 0.4 to 0.5mm on a coarse knurl, double that on round.