Gallery, Projects and General > How to's

Milling machine tram tool

<< < (13/17) > >>

fatal-exception:
Great project Bogs! I've seen these around and have though about how handy they would be each time I have to tram the mills.

The bit about turning down the shank after it's installed in the bar is the chunk of the puzzle that makes it all good.  :D I wonder if this step could be avoided if the hole was bored on the lathe?

It seems that as your project list goes down, mine goes up!  :hammer:

Thanks for the writeup.

Paul

andyf:

--- Quote from: irishwoodsman on November 14, 2011, 10:20:23 AM ---Nice jig, but i have a question, i want to use this to cut morse tapers in a lathe. do i have to space the indicators the same distance as the length of the taper. i will be useing this to set the degree of my compound so i can machine the taper  ty for any info

--- End quote ---

A more convenient way to angle the compound might be to look up the taper per inch here http://littlemachineshop.com/Reference/Tapers.php, and angle the topslide so that a dial indicator bearing on the side of it exhibits the appropriate variation when the carriage is moved along by 1". Your topslide will probably be long enough to double, treble or quadruple the figures and measure over 2, 3 or 4" for greater accuracy.

Check by rough measurement of a similar taper whether the per inch figure is measured over the diameter or the radius. If the former, halve it or you will end up with a taper twice as steep as you require, as I once found out through carelessness  :bang:

Unless you can bring a morse socket up to work held in the chuck for a test fit with engineer's blue, it would be better to turn it between centres. Then, if some tiny adjustment is needed, you won't be troubled with chucking errors when returning it to the lathe.

Andy.

tel:
Like this

andyf:
Exactly, Tel, except that when working on a virgin length of barstock, you can centre drill both ends and use a regular centre direct in the tailstock, rather than the female one in a drill chuck you have had to use with your ready-made demo item.


Andy

PS I suppose this is all very  :offtopic: for Bog's tram tool thread, so I'd better say no more...

PPS ... Except that a dog will be needed to drive the item.

fatal-exception:
For those of you Canucks on here, I found some good quality, cheap dial indicators from Accusize Tools out of Ontario. $12 each + shipping. http://www.accusizetools.ca/products_details.asp?big=1&small=20&proid=15

I whipped up a variation of Bogs design in Solidworks and have attached it to this post. I'll post my results when it's done!

Happy chip making!  :)

Paul

Navigation

[0] Message Index

[#] Next page

[*] Previous page