Dongguan CNC machining on the workpiece bending deformation

Dongguan CNC machining metal stamping parts are more common deformation refers to those who use the punch and die will be iron, aluminum, copper and other sheet and other materials to deformation or fracture. Of course, there are more deformation of the thin plate, thick plate due to the thickness of the increase in resistance, deformation is not clear. Here we take a look at the bending deformation of what the situation.

1. Dongguan CNC machining tortuous deformation occurs mainly in the center of the zigzag angle range, the farther away from the straight side, the smaller the deformation.

2. Strain neutral layer: close to the die outside the fiber tangential elongation, Dongguan CNC processing close to the inside of the punch by the compression of the tightening, between stretching and tightening is not a shortened or shortened center The fibrous layer, called the strained neutral layer.

3. Deformation of the section: the inner layer by the tightening, the width of the inner layer by the stretch, the width decreases.

Torsional deformation of the stress situation:
① thin plate twists and turns is the plane stress state, three-dimensional strain condition;
② wide plate twists and turns are three-dimensional stress state, plane strain condition.


Dongguan CNC processing twists and turns when the strain situation:
A. Length direction: lateral elongation strain, medial tightening strain;
B. Thickness direction: the outer side of the sheet: the thickness direction of the tightening strain; sheet inside: the thickness of the direction of elongation strain;
C. Width direction: narrow plate: lateral tightening strain, the inside of the elongated strain; wide plate: the outside, the inner strain is approximately zero.