hat
Active Member
Posts: 48
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Post by hat on Jul 30, 2007 13:14:28 GMT
When I reverse the jaws on my 3 jaw chucks I always have the problem of getting them back into the right order so that they grip true - yes the jaws and the body are numbered and what I do is to turn the key in reverse until all the jaws have clicked then I turn them to close up. Its trial and error getting them in correctly.
Am I missing a basic trick??
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Post by dickdastardly40 on Jul 30, 2007 13:54:56 GMT
Hat,
This method works for me:
Turn the scroll until the opening at the outward extremity is just before slot number 1. Put in jaw one and turn to latch it, rotate the scroll 1/3 turn until it is just before slot number 2. Put in jaw two then repeat for jaw three.
Close to ensure all meet in the middle and are concentric.
Hope this works for you
Al
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steam4ian
Elder Statesman
One good turn deserves another
Posts: 2,069
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Post by steam4ian on Jul 30, 2007 14:08:51 GMT
G'day Hat.
Al's method works for me too.
Regards
Ian
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simonwass
Part of the e-furniture
Cecil Pagets 2-6-2 of 1908. Engine number 2299. Would make a fascinating model....
Posts: 472
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Post by simonwass on Jul 30, 2007 16:13:59 GMT
When I reverse the jaws on my 3 jaw chucks I always have the problem of getting them back into the right order so that they grip true - yes the jaws and the body are numbered and what I do is to turn the key in reverse until all the jaws have clicked then I turn them to close up. Its trial and error getting them in correctly. Am I missing a basic trick?? Just do as you are doing now but wait until no.1 jaw drops then tighten. To do this with outside jaws I put a big elastic band round the jaws to pull them in whilst turning key. |
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SteveW
Elder Statesman
Posts: 1,399
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Post by SteveW on Jul 30, 2007 21:19:03 GMT
Guys,
This one has be answered before. I'm not getting at anyone just want to say you might get a more extensive answer quicker by searching the back threads.
Update: It was a struggle but I found it. Look for "Help with chuck jaws please" back in 22 Jan 07 for more ideas.
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Post by Tim Bayliss on Jul 31, 2007 11:24:15 GMT
I'm going to put the cat amongst the pigeons here!
I once had an aged English 3 jaw sc chuck (made by a company called George I think) with 3 sets of jaws, inside,outside and plain. I had trouble with all 3 sets until I worked out by trial and error that I had to insert the jaws in the order 2/3/1 to get them to align properly, it was extremely worn by the way but I don't know if this was a factor.
I no longer have this chuck, an adventurous sole liked the look of it and bought it off me and I replaced it with a new Toolmex that follows the rules.
Tim.
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Post by teakfreak on Jul 31, 2007 12:56:29 GMT
I too have a 3-jaw chuck where the jaws need to be inserted in the order 2-3-1 although in my case its the original Burnerd check supplied with my Myford - its because the first "thread" of the no.1 jaw (the bit that engages with the scroll) has broken off, therefore the first one to pick up is the second one, if you see what I mean! It is a minor inconvenience compared to the price of a new set of jaws!
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steam4ian
Elder Statesman
One good turn deserves another
Posts: 2,069
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Post by steam4ian on Jul 31, 2007 13:17:26 GMT
G'day all.
I've marked the slots with centre pop marks according to the jaw number. Makes it easy, don't even need a rubber band!
Regards,
Ian
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Post by modeng2000 on Aug 1, 2007 8:41:57 GMT
I used a set of number stamps to mark the jaw positions.
John
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Post by spurley on Aug 1, 2007 12:33:10 GMT
Does that mean you use a metal band then??? ;D ;D ;D
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abby
Statesman
Posts: 927
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Post by abby on Aug 1, 2007 18:45:24 GMT
Nah - heavy metal band !!!
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steam4ian
Elder Statesman
One good turn deserves another
Posts: 2,069
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Post by steam4ian on Aug 1, 2007 22:28:46 GMT
No! Just blow my own trumpet!
Nobody else does.
Ian
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