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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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Quorn tooling grinder questions
I'm looking for advice on my latest acquisition. It's clearly capable
of more than I know how to do, but I'd like to know if anyone else here is familiar with the "Quorn" as designed by Professor D.H. Chaddock, and published in Model Engineer magazine in at least December 1976. Pictures of a similar if not identical unit here (the one on the right) http://www.lawm.freeserve.co.uk/quorn.htm Anyone have one of these beasties, or something similar, who can give me any advice at all? My limit of experience sharpening tools, is twist drills on the grinder with a guide, and they come out fine to my eye. I'm comfortable with geometry and related math, which seems to me I'm going to need. So it's pretty intimidating right now, all those adjustments. How do I make this baby work to, say, sharpen a 4-flute endmill? Obviously I need to order the book, but any advice is welcome. Oddly enough, if you google for "Quorn", you get a bunch of hits for some synthetic meat substitute. Amazing what you find on the Internet. Thanks, Dave Hinz |
#2
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Quorn tooling grinder questions
I bet if you ask this on uk.rec.models.engineering you will find a dozen or
more users of the Quorn. Adam Smith Midland ON "Dave Hinz" wrote in message ... I'm looking for advice on my latest acquisition. It's clearly capable of more than I know how to do, but I'd like to know if anyone else here is familiar with the "Quorn" as designed by Professor D.H. Chaddock, and published in Model Engineer magazine in at least December 1976. Pictures of a similar if not identical unit here (the one on the right) http://www.lawm.freeserve.co.uk/quorn.htm Anyone have one of these beasties, or something similar, who can give me any advice at all? My limit of experience sharpening tools, is twist drills on the grinder with a guide, and they come out fine to my eye. I'm comfortable with geometry and related math, which seems to me I'm going to need. So it's pretty intimidating right now, all those adjustments. How do I make this baby work to, say, sharpen a 4-flute endmill? Obviously I need to order the book, but any advice is welcome. Oddly enough, if you google for "Quorn", you get a bunch of hits for some synthetic meat substitute. Amazing what you find on the Internet. Thanks, Dave Hinz |
#3
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Quorn tooling grinder questions
Here's a general guide on endmill resharpening. Very well written.
http://www.hanita.com/hanita_protect...info_start.htm -- (©¿©) An apple a day keeps the doctor away. Two apples a day gets the doctor's OK. Five a day makes you a fruit grower like me. |
#4
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Quorn tooling grinder questions
Dave Hinz wrote:
I'm looking for advice on my latest acquisition. It's clearly capable of more than I know how to do, but I'd like to know if anyone else here is familiar with the "Quorn" as designed by Professor D.H. Chaddock, and published in Model Engineer magazine in at least December 1976. Pictures of a similar if not identical unit here (the one on the right) http://www.lawm.freeserve.co.uk/quorn.htm Anyone have one of these beasties, or something similar, who can give me any advice at all? My limit of experience sharpening tools, is twist drills on the grinder with a guide, and they come out fine to my eye. I'm comfortable with geometry and related math, which seems to me I'm going to need. So it's pretty intimidating right now, all those adjustments. How do I make this baby work to, say, sharpen a 4-flute endmill? Obviously I need to order the book, but any advice is welcome. Oddly enough, if you google for "Quorn", you get a bunch of hits for some synthetic meat substitute. Amazing what you find on the Internet. Thanks, Dave Hinz There's a Yahoo group for this. Randy |
#5
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Quorn tooling grinder questions
On Fri, 5 May 2006 08:53:28 -0400, Adam Smith wrote:
I bet if you ask this on uk.rec.models.engineering you will find a dozen or more users of the Quorn. Will do, thank you! |
#6
Posted to rec.crafts.metalworking
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Quorn tooling grinder questions
"Dave Hinz" wrote in message ... I'm looking for advice on my latest acquisition. It's clearly capable of more than I know how to do, but I'd like to know if anyone else here is familiar with the "Quorn" as designed by Professor D.H. Chaddock, and published in Model Engineer magazine in at least December 1976. Pictures of a similar if not identical unit here (the one on the right) http://www.lawm.freeserve.co.uk/quorn.htm Anyone have one of these beasties, or something similar, who can give me any advice at all? My limit of experience sharpening tools, is twist drills on the grinder with a guide, and they come out fine to my eye. I'm comfortable with geometry and related math, which seems to me I'm going to need. So it's pretty intimidating right now, all those adjustments. How do I make this baby work to, say, sharpen a 4-flute endmill? Obviously I need to order the book, but any advice is welcome. Oddly enough, if you google for "Quorn", you get a bunch of hits for some synthetic meat substitute. Amazing what you find on the Internet. Thanks, Dave Hinz Dave, Yes a very capable machine - I have one. They were originally described in a series of articles in Model Engineer, kits are still available as is the book "The Quorn Universal Tool and Cutter Grinder" by Prof Chaddock published by Tee publishing ISBN 0 905 100 91 3 which covers the building and use of the machine. There are two very similar models - the Mk1 & the Mk2 There is a yahoo group for quorn owners called quorn_owners and I can conform it has nothing to do with the meat substitute that I can remember suffering when times were hard when we bought our first house, but rather is named afeter the village in Derbyshire where Prof Chaddock lived ! AWEM |
#7
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Quorn tooling grinder questions
Dave, I built one in the mid '80 and can vouch for its usefulness and VERSATILITY! In my experience the standard equipment is suitable for sharpening/ grinding all cutting tools in the model engineers workshop: I've sharpened dove-tail cutters to meet an existing 60 degree angle work piece (slightly off 60 deg.!) 4 and 6 flute end mills on the sides and ends, threading tool bits for acme and worm threads, etc. Because it is such a versatile little machine the individual set-ups can be tedius....I collect dull endmills of a given size and then have a production run of sharpening. The standard work holding mandrel works well for endmills up to 3/8" dia. For 1/2" dia. and larger an air bearing spindle would be a great help (I don't have one yet, it's high on my to-do list). The larger dia. work holding mandrels have too much friction which overcomes the "touchy-feely" necessary to keep the cutter flute on the tooth rest while pulling on the mandrel and rotating the cutter....3 simultaneous requirements! Getting a copy of the instruction book is probably the best way to go. If, after reading it you still have questions, just post them on this NG. Good luck! Wolfgang |
#8
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Quorn tooling grinder questions
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#9
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Quorn tooling grinder questions
Andrew Mawson wrote:
They were originally described in a series of articles in Model Engineer, kits are still available as is the book "The Quorn Universal Tool and Cutter Grinder" by Prof Chaddock published by Tee publishing ISBN 0 905 100 91 3 which covers the building and use of the machine. There are two very similar models - the Mk1 & the Mk2 Which version is described in that book? Mk1 or Mk2 or both, or are the Mk's different to the one in the book? And what's the difference between the two, please. I'm interested in the Quorn since longer, but it seems that there are more than one version around and I don't know which one is the best (read: most versatile). TIA, Nick -- Motor Modelle // Engine Models http://www.motor-manufaktur.de DIY-DRO // Eigenbau-Digitalanzeige http://www.yadro.de |
#10
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Quorn tooling grinder questions
Dave Hinz wrote:
I'm looking for advice on my latest acquisition. It's clearly capable of more than I know how to do, but I'd like to know if anyone else here is familiar with the "Quorn" as designed by Professor D.H. Chaddock, and published in Model Engineer magazine in at least December 1976. Pictures of a similar if not identical unit here (the one on the right) http://www.lawm.freeserve.co.uk/quorn.htm Anyone have one of these beasties, or something similar, who can give me any advice at all? My limit of experience sharpening tools, is twist drills on the grinder with a guide, and they come out fine to my eye. I'm comfortable with geometry and related math, which seems to me I'm going to need. So it's pretty intimidating right now, all those adjustments. How do I make this baby work to, say, sharpen a 4-flute endmill? Obviously I need to order the book, but any advice is welcome. Oddly enough, if you google for "Quorn", you get a bunch of hits for some synthetic meat substitute. Amazing what you find on the Internet. Thanks, Dave Hinz As the others have mentioned, Get the Book! The Quorn was designed to not only resharpen cutters, but to be used to make cutters in small sizes that were not available at the time. The book covers setups very well, and pretty much gives the step by step of setting up for a myriad of sharpening jobs. It pretty much qualifies as gross overkill, capabilities wise, if all you wanted to do was sharpen a few drills and endmills. I know that you bought yours, but one comment that I have seen in print read along the lines of "If you are not a competent machinist when you start building this tool, you will be by the time it's done" Cheers Trevor Jones |
#11
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Quorn tooling grinder questions
On Fri, 05 May 2006 17:36:38 -0600, Trevor Jones wrote:
Dave Hinz wrote: I'm looking for advice on my latest acquisition. It's clearly capable of more than I know how to do, but I'd like to know if anyone else here is familiar with the "Quorn" as designed by Professor D.H. Chaddock, and published in Model Engineer magazine in at least December 1976. (snip) How do I make this baby work to, say, sharpen a 4-flute endmill? Obviously I need to order the book, but any advice is welcome. As the others have mentioned, Get the Book! Absolutely. Hoping to find it, actually. This was built by my uncle, who unfortunately I can't ask technical questions of at this time. But he must have had the books when he built and used it, but there's tons (literally) of books to go through. The Quorn was designed to not only resharpen cutters, but to be used to make cutters in small sizes that were not available at the time. The book covers setups very well, and pretty much gives the step by step of setting up for a myriad of sharpening jobs. I found an article from 1976 by Chaddock, talking about sharpening center drills with it. So that's my first setup then, I think, given that it's the only actual instructions I have so far It pretty much qualifies as gross overkill, capabilities wise, if all you wanted to do was sharpen a few drills and endmills. Right now, I don't know enough about it to know how much I don't know about it. I know that you bought yours, but one comment that I have seen in print read along the lines of "If you are not a competent machinist when you start building this tool, you will be by the time it's done" It's a beautiful piece of work, I'll tell you that. So, yes, I don't get the benefit of making one, but hopefully my background in maths will help me understand how to use it. Thanks, Dave |
#12
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Quorn tooling grinder questions
"Nick Müller" wrote in message ... Andrew Mawson wrote: They were originally described in a series of articles in Model Engineer, kits are still available as is the book "The Quorn Universal Tool and Cutter Grinder" by Prof Chaddock published by Tee publishing ISBN 0 905 100 91 3 which covers the building and use of the machine. There are two very similar models - the Mk1 & the Mk2 Which version is described in that book? Mk1 or Mk2 or both, or are the Mk's different to the one in the book? And what's the difference between the two, please. I'm interested in the Quorn since longer, but it seems that there are more than one version around and I don't know which one is the best (read: most versatile). TIA, Nick -- Motor Modelle // Engine Models http://www.motor-manufaktur.de DIY-DRO // Eigenbau-Digitalanzeige http://www.yadro.de IIRC the Mk2 has a head support column that is spiral grooved for ease of height adjustment, and a cast aluminium cover over the drice belt. The two versions though can prettywell do the same tasks. If you go to the quorn_user Yahoo group and look in the photos section you will see several of each. Don't forget that they were never commercially produced, all were made by hobbyists many of whom incorporated their own ideas. AWEM |
#13
Posted to rec.crafts.metalworking
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Quorn tooling grinder questions
Nick Müller wrote:
Andrew Mawson wrote: They were originally described in a series of articles in Model Engineer, kits are still available as is the book "The Quorn Universal Tool and Cutter Grinder" by Prof Chaddock published by Tee publishing ISBN 0 905 100 91 3 which covers the building and use of the machine. There are two very similar models - the Mk1 & the Mk2 Which version is described in that book? Mk1 or Mk2 or both, or are the Mk's different to the one in the book? And what's the difference between the two, please. I'm interested in the Quorn since longer, but it seems that there are more than one version around and I don't know which one is the best (read: most versatile). TIA, Nick -- Motor Modelle // Engine Models http://www.motor-manufaktur.de DIY-DRO // Eigenbau-Digitalanzeige http://www.yadro.de Direct quotes from the book. "The principle difference betwwen the Mk I and the Mk II wheelheads is the method of mounting the driving motor. By using a flat adapter plate bolted to the machined end of the Mk I wheelhead bracket casting, any suitable motor can be readily mounted on the Quorn grinder" and "This version of the machine, known as the Mk II and shown in Fig. 1, is functionally interchangeable with the Mk I and both will be described in detail in this book. Of the two the Mk II is certainly the neater and in this writers opinionthe better looking. On the other hand, the Mk I is the more versatile in that it will accept a wider range of suitable motors; the Mk II is designed for one specific motor only and, subject to not exceeding a safe wheel speed, a wider range of pulley ratios." They both utilise the spiral thread on the column to adjust wheel height. Motor specified for the MkII is a Parvalux S.D.13 2800 rpm 1/6 hp single phase permanent capacitor motor made by Parvalux Elecric Motors Ltd, Bournmouth, England Howzat? Cheers Trevor Jones |
#14
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Quorn tooling grinder questions
Trevor Jones wrote:
[differences between Mk I and Mk II snipped] Howzat? That explains it all. Thanks a lot for your answer! Nick -- Motor Modelle // Engine Models http://www.motor-manufaktur.de DIY-DRO // Eigenbau-Digitalanzeige http://www.yadro.de |
#15
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Quorn tooling grinder questions
Hey Dave,
Pretty sure Lindsay has a (re)printing of a book(let) by that name. Anyway, do a Google on "Quorn Tool and Cutter Grinder", and it's a bit better. Take care. Brian Lawson, Bothwell, Ontario. XXXXXXXXXXXXXXXXXXX b On 5 May 2006 12:00:09 GMT, Dave Hinz wrote: I'm looking for advice on my latest acquisition. It's clearly capable of more than I know how to do, but I'd like to know if anyone else here is familiar with the "Quorn" as designed by Professor D.H. Chaddock, and published in Model Engineer magazine in at least December 1976. Pictures of a similar if not identical unit here (the one on the right) http://www.lawm.freeserve.co.uk/quorn.htm Anyone have one of these beasties, or something similar, who can give me any advice at all? My limit of experience sharpening tools, is twist drills on the grinder with a guide, and they come out fine to my eye. I'm comfortable with geometry and related math, which seems to me I'm going to need. So it's pretty intimidating right now, all those adjustments. How do I make this baby work to, say, sharpen a 4-flute endmill? Obviously I need to order the book, but any advice is welcome. Oddly enough, if you google for "Quorn", you get a bunch of hits for some synthetic meat substitute. Amazing what you find on the Internet. Thanks, Dave |
#16
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Quorn tooling grinder questions
On Sun, 14 May 2006 23:20:51 -0400, Brian Lawson wrote:
Hey Dave, Pretty sure Lindsay has a (re)printing of a book(let) by that name. Anyway, do a Google on "Quorn Tool and Cutter Grinder", and it's a bit better. Excellent, thanks. |
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