(1) Punching die? Separate materials along closed or open contours. Such as blanking die, punching die, cutting die, cutting die, trimming die, cutting die, etc.

(2) Bending die? A mold that bends a blank or other blank along a straight line (bending line) to obtain a workpiece with a certain angle and shape.

(3) wire drawing die? It is a mold that makes the blank of metal plate into an open hollow part or further changes the shape and size of the hollow part.

(4) Forming mold? It is a mold that directly copies the blank or semi-finished workpiece according to the shape of the convex-concave die in the drawing, and the material itself only produces local plastic deformation. Such as expanding die, necking die, flaring die, wavy forming die, flanging die, shaping die, etc.

Second, according to the process combination points

(1) Single-process stamping die A die that only completes one stamping process in one stroke of the printing machine.

(2) The compound die has only one station, and in one stroke of the press, two or more stamping processes are completed at the same station at the same time.

(3) The progressive die (also called the continuous die) has two or more stations in the feeding direction of the blank, and in one stroke of the press, two or more stamping processes are continuously completed at different stations.

Extended data:

First, the mold parts

A key part of die fittings is die spring.

Die springs include: Japanese standard die springs, German standard die springs, springs and polyurethane springs. Usually, the die spring refers to a rectangular die spring.

Die springs are widely used in stamping dies, metal die-casting dies, plastic dies, other elastic motion precision mechanical equipment, automobiles and other fields.

Generally speaking, the material of die spring is chromium alloy steel. Chromium alloy spring steel has the characteristics of high temperature resistance, high hardness and long service life.

Rectangular die spring has the characteristics of small volume, good elasticity, high rigidity, high precision, rectangular material, surface color separation spraying (electroplating) to distinguish different loads, beautiful appearance and so on.

Second, the mold design

1. Discuss the material direction (product material, mold material).

2, concave-convex die gap size.

3. The position and quantity of guide pins are sufficient.

4. Whether to consider the rebound of waste and whether the discharging along the die is smooth.

5. Whether the monitor and waste rebound sensor are designed.

6, positioning plate and floating pin selection is appropriate.

7. Whether the number, size and position of bolts (including discharging bolts) are selected correctly.

8, considering the blanking force, choose the punch.

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