the geometry of shearing punch design
2007-11-10 22:37:48 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
Typically, the punch and die hole diameters are chosen so that the clearance between the 2 is 1/3 the thickness of the sheet metal. (A little more for more brittle materials and a little less for more malleable ones.)
The inverse tangent of 1/3 is 18.43 degrees.
2007-11-11 04:47:06 · answer #1 · answered by Tim C 7 · 0⤊ 0⤋
shearing angle of the punch is the method to reduce the load on the punch without reducing the capacity of the punch to shear a given thickness of material.normally the punch face is parallel to the surface of the die,in shearing angle punch face is at an angle which reduces the forces acting on the face of the punch.
2007-11-13 00:21:15 · answer #2 · answered by Anonymous · 0⤊ 0⤋
15 to 20 degree will work better
2007-11-15 03:20:00 · answer #3 · answered by bongards 2 · 0⤊ 0⤋
I would like to see the correct answer on this.
2007-11-11 06:42:08 · answer #4 · answered by jimmybond 6 · 0⤊ 0⤋