Dividing plate

[Mogens KildeParticipant @mogenskilde92996]

Hello All
 
As I stated, I’m a total novice in clockmaking.
I have already got a lot of help from your guys.
 
Right now I’m working on a dividing device that should make me able to cut wheels and pinions.
 
The device I intend to build as a direct drive unit, i.e. the dividing plate i fix to the shaft chuck – øøeh hope this gives meaning.
 
Now I have made the plate with the following set of locating holes :
 
140-130-120-100-96-80-76
 
This should give a lot of dividing setup, but before I go on, I would like to know if I should ensure other numbers of locating holes, in my effort to make useful wheels and pinoins for clocks.
 

 
 
 

Edited By David Clark 1 on 25/01/2011 20:18:52

[Mogens KildeParticipant @mogenskilde92996]

[MICHAEL WILLIAMSParticipant @michaelwilliams41215]

There are several numbers which can’t be indexed directly with your plate but rather than build up a collection of plates for all purposes best wait until you know for certain which numbers you need and work from there .

 

There are other things that can be used for indexing such as gears . Also worm and gear set ups with simple plates which can be contrived to index almost anything .

 

When indexing small numbers such as for the teeth on a pinion it is usually better to make or find an index plate/gear with the actual number of counts in it – this avoids mistakes which readily arise when trying to count index advances of say ten holes in a seventy hole master to index seven teeth .

 

Accurate index plates for small numbers of divisions can be made directly without having another plate to copy .

[Mogens KildeParticipant @mogenskilde92996]

Hi Michael

 

Thank you for your reply.

Sorry to respond so late, but I was waiting for evntually more replies.

 

I do agree on the risk of mistakes with a dividing plate with many holes, and hope you will not be too right about this issue, when I start to make my wheels 

 

 Mogens

Edited By Mogens Kilde on 02/02/2011 16:30:06

[John OlsenParticipant @johnolsen79199]

Use a black marker pen to mark the holes you need to use before actually cutting metal. After you have finished wipe it off witha bit of meths. I do this with my Vertex worm dividing head, I am sure it has saved me from miscounting when it really matters.

 

regards

John

[Mogens KildeParticipant @mogenskilde92996]

Thank You John

 

Great trick – I’ll remeber that

[John HaineParticipant @johnhaine32865]

64?

[Mogens KildeParticipant @mogenskilde92996]

Hi John

Should I understand your post as a sugestion that I also should have a 64 hole serie in my dividing plate ?

 

Mogens 

Edited By Mogens Kilde on 02/02/2011 19:59:39

[adyParticipant @ady]

I think it was Sparey who recommended a 60 as the most useful bullwheel…or was that Westbury…

Edited By ady on 03/02/2011 00:00:20

[Mogens KildeParticipant @mogenskilde92996]

Hi Ady

 

I’m not sure what a bullwheel is, but my dividing tool is with no gear, the diving is direct from the plate.

 

I have a serie of 120 holes and can therefore make 60 dividings

 

Mogens

[John OlsenParticipant @johnolsen79199]

On a lathe will a backgear, the bullwheel is the large gear on the spindle that directly drives the work. It can be very convenient for direct dividing, provided it has a useful number of teeth. The one on the ML7 has 65, which is only useful for doing 5, 13 or 65 divisions. With 60 you can do 2,3,4,5,6,10,12,15,20,and 30 divisions. As well as 60 of course.

 

regards

John

[Mogens KildeParticipant @mogenskilde92996]

Hi All

 

I think it’s time to show my CAD of the intended tool

 

 

Mogens

Edited By Mogens Kilde on 03/02/2011 21:42:34

[Mogens KildeParticipant @mogenskilde92996]

Hi All

 

I now have finished my dividing tool

http://m_kilde.skysite.dk/

 

Edited By David Clark 1 on 18/04/2011 11:03:22

[Ian S CParticipant @iansc]

Morgens, do you have some way, other than the indexing pin to lock the shaft? It looks a very usful tool, and nicely made. Ian S C

[Mogens KildeParticipant @mogenskilde92996]

The main shaft is locked in the tool post after indexing

 

Edited By David Clark 1 on 18/04/2011 10:59:09

[Michael GilliganParticipant @michaelgilligan61133]

Morgens,
This looks a very neat device … will you be selling the plans through your website?

MichaelG.

[Mogens KildeParticipant @mogenskilde92996]

Hi Gillian

 

I hope to persuade David to print a build article in ME Magazine. I just have to write it some time soon I hope.

Edited By David Clark 1 on 18/04/2011 10:59:52

[Michael GilliganParticipant @michaelgilligan61133]

Mogens,

?
I hope to persuade David to print a build article in ME Magazine. I just have to write it some time soon I hope.

That’s good news, thanks.

By the way;
… sorry I spelled your name wrong first time.
… and mine is Michael.

MichaelG.

[VersabossParticipant @versaboss]

Ahem, cough, Michael, do you really need a plan to clone such a gadget? 

No big secrets here I think… But the clamping method for the detent arm is a nice solution; I hope to remember it when the need arises next time.

Greetings, Hansrudolf

[Michael GilliganParticipant @michaelgilligan61133]

Hansrudolf,

No, actually I do not … and I already have a selection of dividing equipment available.

I simply asked Mogens the question because he appears to sell nicely presented plans at a very reasonable price, and I think he deserves encouragement.

MichaelG.

[Richard ParsonsParticipant @richardparsons61721]

The real problem is making the division plates. Or is it? Make a two hole punch with one punch tool and one locating tool and get a length of the metal banding. Use the tool to punch 1 more hole than you need in the division plate. Now rough up a wheel (bits of wood etc) of the right diameter and away you go.

If you are going to make a complete plate start with the largest hole count and work your way down. I made one plate this way and then realised I had most of the plates I would ever need in the shape of my Myford change wheels.

[Author]

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