HELP! Rotating a Pacific universal head (in 2D)

[philbert]

Hi all,

I'm new here, so sorry if this is the wrong forum.

I am using a Pacific universal mill (not sure of the model - it's very similar to the photo below), I want to machine a 10 degree face on a part along the X axis. Up until now I have been able to machine chamfers in the Y axis, so a simple 'vertical' rotation of the head has worked.

I can see that a combination of movements of the vertical and 45deg settings would rotate the tool in the Y axis whilst remaining perpendicular to the X axis, but I'm not sure how much to move each.

Please help!

Thanks in advance,
Phil

[David101]

Hi Phil
I'm new to this too. I'm faced with the same problem on our 3 axis milling machine. We are supplied with a table of angles in degrees & minutes but it makes no sense to me.

Did you get any useful replies that you can pass on, as I really need to solve this.

Many thanks
David
New Zealand

[Kiwi]

Originally Posted by philbert I want to machine a 10 degree face on a part along the X axis...........I can see that a combination of movements of the vertical and 45deg settings would rotate the tool in the Y axis whilst remaining perpendicular to the X axis, but I'm not sure how much to move each.

I guess by now Phil will have completed his job but thought this may bring someone to offer some more information.
I have never used this type of head so I am not familiar with the calibration format.
I have written a VB program to calculate these angles but unsure how the different manufactures have the degrees marked, cw or ccw?
My calculation for your 10 deg. along the X axis is Miter Face 130 Deg. 45 min. and Mount Face 327 Deg. 3 min. These may need to be inversed with 360deg.
Any confirmation will be appreciated.