Die makers square

[Welderpaul]

Just seen this while browsing..

How is it used?.. doesnt look much like a square?

 

[brightspark]

Just seen this while browsing..

How is it used?.. doesnt look much like a square?

the same as a protractor for measuring fine graduations

 

[Hitch]

Guessing, is that for measuring the shear angle on the back of a die....?
Long arm exagerates the fine agles....

Theres a toolmaker here somewhere, i'm sure....

 

[Engineer1964]

Hi Paul

I used to have a CNC Turret Punch and the Dies used in that had the holes with a very fine taper to allow the Slug to pass once its punched, these are normally done under very fine conditions using a spark eroder, But if you fine yourself having to manufacturer a die, say for a Fly press, then you could use this to check the amount of taper your hole has,

You just lay it on top and make sure the arm is flush with the sides and then read the angle on the block

the reading is very fine, each one of those large marks is probably 1 degree

 

[Welderpaul]

Thanks fellas