How are automotive moulds classified?

Automotive moulds can generally be classified according to the following main features.

1. Classification according to the nature of the process

a. Punching die: a die that separates materials along a closed or open contour line. Such as drop die, punching die, cutting die, notching die, cutting edge die, cutting die, etc.

b. Bending die: make plate blank or other blanks along the straight line (bending line) to produce bending deformation, so as to obtain a certain angle and shape of the workpiece of the mold.

c. Forming die: is the blank or semi-finished workpiece according to the figure convex, concave mold shape directly copy forming, and the material itself only produce local plastic deformation of the mold. Such as expansion moulds, indentation moulds, flaring moulds, undulation moulds, flanging moulds, shaping moulds, etc..

d. Deep-drawing mould: it is the mould to make the sheet blank into open hollow parts, or make the hollow parts further change the shape and size.

2、According to the processing method of the product classification

According to the different processing methods of the products, the moulds can be divided into five categories: punching and shearing moulds, bending moulds, drawing moulds, forming moulds and compression moulds.

a, bending mould: is the flat embryo bent into an angle shape, depending on the shape of the parts, precision and production volume, there are a variety of different forms of mould, such as ordinary bending die, cam bending die, roll edge die, arc bending die, bending punching die and twist punching die, etc..

b, Punching and shearing dies: the work is done by shearing, the common forms are shearing dies, undercutting dies, punching dies, trimming dies, edge punching dies, pulling dies and punching and cutting dies.

c. Forming dies: These are used to change the shape of the embryo by means of various local deformations, and are in the form of a convex forming die, a rolled edge forming die, a necking forming die, a hole flange forming die and a round edge forming die.

d. Compression dies: These are used to deform the metal blank into the desired shape by using strong pressure.

e. Extraction dies: Extraction dies are used to make flat blanks into seamless containers with a bottom.

3. Classification according to the degree of process combination

a. Single process die: a die that completes only one stamping process in one stroke of the press.

b. Progressive die (also called continuous die): a die with two or more stations in the direction of feeding the blank, completing two or more stamping processes one by one at different stations in one stroke of the press.

c. Compound die: a die with only one station, in which two or more stamping processes are completed simultaneously at the same station during one stroke of the press.