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Die life of cold stamping die and improvement - Part One

Overview of stamping die

Stamping Die stamping in cold, the material (metal or non-metallic) processing into parts (or half) of a special technical equipment, called cold stamping die (commonly known as Die). Press is at room temperature, using the die installed in the press to put pressure on the material to produce a separation or plastic deformation, and thus to obtain the necessary parts of a pressure processing method.

Stamping die in the form of many, the general categories according to the following main features:

1. According to the technical nature of

a. Die along the closed or open contour the material are derived from mold. If blanking die, punch die, cut off the mold, cut mode, cutting mode, split mode, etc.

b. Bending mode to blank or blank sheet along a straight line (curved line) to bend, deform, and thus obtain a certain angle and shape of the workpiece in the mold.

c. The drawing die is made of the blank sheet opening hollow or hollow pieces of further changes to the shape and size of the mold.

d. Die rough or semi-finished workpiece is convex according to plan, direct copy the shape of the die shape, the material itself generate only local plastic deformation of the mold. Such as the building mode, reducing the die, expansion die, forming die rolling, flanging mold, plastic mold.

2. According to the degree classification process combination

a. Single process model in a press tour, just completed a die stamping process.

b. Composite model is only one station, in a press tour, at the same station at the same time to complete more than two or two die stamping process.

c. Progressive Die ( also known as the modulus of continuity) in the feeding direction, rough, with two or more of the station, at the press of a visit, work in different places on the completion of two or two successive Road over stamping die process.

Cold stamping die is used in cold stamping die mold industry, and accessories required for high-performance structural ceramic materials, preparation methods, high-performance ceramic materials, molds and accessories from the zirconium oxide and yttrium aluminum powder increase, Pr element composition, Preparation is the solution of zirconia, yttria solution, praseodynium oxide solution, according to a certain percentage of alumina solution when mixed liquor, ammonium bicarbonate infusion, by co-precipitation synthesis of ceramic materials, molds and accessories needed for raw materials, reaction precipitate generated by the treatment, drying, calcining and accessories by high performance ceramic mold material superfine powder, and then after forming, sintering, finishing, they will have high-performance ceramic materials, molds and accessories. Advantages of this invention is the invention made of cold stamping dies and parts and long service life, the process does not appear in the press and its parts and stamping die bond generated the phenomenon of stamping surface is smooth, no glitches, can replace traditional high-speed steel, tungsten steel.

Die with main parts

Die stamping tools is the main process equipment, stamping reply on the relative movement under the mold completed. Processing time because the upper and lower mold between the constant division and, if continued operation of the fingers of workers to enter or remain in the mold closed, there will certainly pose a serious threat to their personal safety.

Of the mold main parts, function and safety requirements

1). Working parts is direct punch to blank forming the working parts. Therefore, it is the key to mold parts. Punch not only sophisticated and complex, it should meet the following requirements:

a. Be of sufficient strength, can not be broken or destroyed during stamping.

b. Should be appropriate to its material and heat treatment requirement, to prevent too high hardness and brittle fracture.

2). Positioning parts positioning part is to determine the location of the parts installed blank, there are pins (board), gauge pin (plate), lead is sold, guide plate, knife set from the side, side pressure etc..

Design should be considered when positioning parts easy to operate and should not have had orientation, location to facilitate observation, preferably in the forward position, contouring to correct the pin location and positioning.

3). Binder, unloading and discharging parts binder components are blank holder, binder board.

Blank holder pressure can drawing blank holder force, thereby preventing billets under the action of the tangential pressure arch formed folds. The role of pressure plate is to prevent movement and bounce blank. Top of the device, discharge boards role is to facilitate the pieces and clean up waste. They by the spring, rubber and equipment, putting on the air-cushion support, can move up and down, knocking our pieces of the design should have enough top output, movement to the limited spaces.

Stripper plate area should be minimized or closed position in the operating groove milling our empty-handed. Exposure of the stripper plate should have protection around the plate, to prevent finger inserted into or foreign objects inside, exposed surface edges should be blunt down.

4). Guide parts and guide sleeve guide pin is the most widely used part of a guide. Its role is to ensure punch the punching clearance when accurate match. Therefore, the guide posts, guide cover the gap should be less than the blanking clearance. Guide Post located next mold base, to ensure that the stroke bottom dead center, the lead column in the template on the face over the top for at least 5 to 10mm. Guide columns should be arranged far away from the module and the pressure plate in the area, so the operators arms do not get to take over the lead column material.

5). Supporting and clamping the upper and lower parts which include templates, die handle, fixed plate punch, plate, stopper, etc.

Up and down the template is the basis of the cold die parts, other parts are respectively fixed at the top. Template plane size, especially around the direction to the compatible with the workpiece, too large or too small, is not conducive to action.

Some molds ( blanking, punching type mold) to the pieces of convenience, be set up under the mold plate. At this time the best and the template plate connected between the screw the two plate thickness should be absolutely equal. Plate spacing out the pieces to be able to prevail, not too much, so as not to break the template.

6). Fastening parts which includes screws, nuts, spring, pins, washers, etc., are generally used standard parts. Die more with the amount of standard parts, design choice and flexibility should be tightened to ensure the top out of the need to avoid exposure to the surface fastener operating position, the staff and impede operation to prevent bumps.



Shenzhen Changdong Stamping Dies CO., LTD. © copyright Add:NO. 56-B, Fuming South Road, Dalang, Dongguan, P.R.C 

E-mail:sales@chang-dong.com Tel:0086-769-8106 1256 0086-181-1876-8847 Sales Manager: Ms. Alice Fax:0086-769-8106 1926

Changdong is one of professional metal stamping die maker in China more than 10 years. We provide metal stamping dies to the customers in 16 countryies.
The company makes the progressive dies and transfer dies. As a stamping die manufacturer, also we provide the prototype dies and metal prototype parts for the short-run production.

Our main products: Stamping Die | Drawn Die | Metal Stampings | Checking Fixture | Progressive Die | Transfer Die | Metal Prototypes | Metal Stamping Tools| Prototype Parts | Prototype Die

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