Question on machinist term

Started by Crosley.In.AZ, April 25, 2010, 02:56:48 PM

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Crosley.In.AZ

Looking in Enco  catalog...  

Horizontal - Vertical Rotary table.

One spec listed is gear ratio 90:1 ...  accuracy within 40 seconds

40 seconds of what?  is my question

:?
Tony

 Plutophobia (Fear of money)

tomslik

Quote from: "Crosley"Looking in Enco  catalog...  

Horizontal - Vertical Rotary table.

One spec listed is gear ratio 90:1 ...  accuracy within 40 seconds

40 seconds of what?  is my question

:?

my guess is that it's less that 1 degree,less that 1 minute kinda thing.
as in really accurate BUT i have no idea what "really" accurate means as it's knida relative...
The last thing I want to do is hurt you. But it\'s still on my list

2rods


tomslik

Quote from: "2rods"40 seconds of a degree

where do minutes come in?
The last thing I want to do is hurt you. But it\'s still on my list

PeterR

Quote from: "tomslik"
Quote from: "2rods"40 seconds of a degree

where do minutes come in?

360 Degrees to a full circle
60 minutes to one degree
60 seconds to one minute

40 seconds = (40/60)minutes =(40/60)x(1/60)degree = 0.01degree

chimp koose

By the way a minute of TIME in the last machine shop I worked at would cost you $2.

unklian

Quote from: "PeterR"
360 Degrees to a full circle
60 minutes to one degree
60 seconds to one minute



Yes, that is correct.

Glen

Tony, I have a very nice rotary table if you need to use it.  It is already mounted to the Mill, I was using it today for these blocks.