What great questions, I had never thought about it before.SteveM wrote:What kind of chuck is that?
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What is the purpose of angling the jaws inwards?
Steve
The chuck is labelled Chas Taylor' (Birm) Ltd TAYLOR CHUCK Made in England, so it comes from my home town
One of the Taylors I am aware of in Birmingham was Taylor and Challen, I wonder if this is the same Taylor.
I suspect we are looking at an evolutionary dead-end in chuck development here. To get that angle, there has to be a spiral cut conical scroll in the chuck, which must be a nightmare to make. Also, the chuck is a lot longer than a flat scrolled one, using up valuable length along the bed and putting the cutting forces further away from the headstock bearings (not a good idea)
The external jaws do seem to have more support than a flat scroll chuck
The internal ones are much the same as a 'normal' one, except there is a longer slideway supporting the jaw. Using the internal jaws as external ones (like every machinist the world over does) means that there is a much longer support to the material
Thanks for your comments chaps - er - guys, I'll put up some more threads like this as and when
Richard