Processes and requirements for mould processing

Sat Apr 22 21:33:47 CST 2023

Mold Making refers to the processing of forming and blanking tools, in addition to shearing and die-cutting dies. Normally, a mould consists of an upper and a lower die. A steel plate is placed between the upper and lower dies and the material is formed under the action of a press. When the press is opened, the workpiece defined by the shape of the die is obtained or the corresponding scrap is removed. Workpieces as small as an electronic connector or as large as an automotive dashboard can be formed in a mould. A progressive die is a set of dies that automatically moves the machined workpiece from one station to another and obtains the formed part at the last station. The tooling process includes: cutting dies, blanking dies, compound dies, extrusion dies, four-slide dies, progressive dies, stamping dies, die-cutting dies, etc.

Mould types are:

1. Metal stamping moulds: continuous mould, single punching mould, compound mould, stretching mould

2. Plastic moulds: injection moulds, extrusion moulds, blister mouldsMould parts processing

3.Die-casting moulds

4.Forging moulds

5.Powder metallurgy moulds

6.Rubber moulds

Mould processing flow

Opening material: front mould material, back mould material, insert material, line material, slant top material.

Open frame: front die frame, back die frame.

Roughing: front die cavity roughing, back die cavity roughing, parting line roughing.

Copper male: front mould copper male, rear mould copper male, parting line clearing copper male.

Wire cutting: insert parting line, copper male, inclined top pillow position.

Computer gong: precision gong parting line, precision gong back die core.

EDM: front die coarse, copper male, male die line clearance, back die bone position, pillow position.

Drilling of holes, pin holes, ejector pins.

Rowing position, rowing position pressing pole.

inclined ejector

compound thimble, matching thimble.

Others: ①Keezers, die pits, rubbish pegs (limit pegs); ②Flying dies; ③Water spouts, braces, springs, water transport.

Die saving, polishing, front die, back die bone position.

Fine water structure, tie rod screw pull hook, spring

Heat treatment of important parts, quenching, surface nitriding of line positions.

Mould trimming and lettering.

In the choice of machine tools to meet the processing requirements as far as possible. Such as the function of the CNC system should be strong, the machine precision should be high, rigidity should be good, thermal stability should be good, with imitation function, etc.