1、 Die Life of cold stamping die and mprovements Overview of stamping die Stamping Die - Stamping in the 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
2、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 th
3、e technical nature of (1) 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. (2) bending mode to blank or blank sheet along a straight line (curved line) to bend, deform, and thus obtain a ce
4、rtain angle and shape of the workpiece in the mold. (3) 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. (4) Die rough or semi-finished workpiece is convex according to plan, direct copy the shape of the die shape, the
5、material itself, generate only local plastic deformation of the mold. Such as the bulging mode, reducing the die, expansion die, forming die rolling, flanging mold, plastic mold. 2. According to the degree classification process combination (1) single process model in a press tour, just completed a
6、die stamping process. (2) 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. (3) Progressive Die (also known as the modulus of continuity) in the feeding direction, rough, with two or more of the station,
7、at the press of a visit, work in different places on the completion of two or two successive Road over stamping die process. Chong called cold stamping die Die-wide. Cold stamping die is used in cold stamping die mold industry, and accessories required for high-performance structural ceramic materia
8、ls, preparation methods, high-performance ceramic materials, molds and accessories from the zirconium oxide and yttrium aluminum powder increases, Pr element composition, Preparation is the solution of zirconia, yttria solution, praseodymium oxide solution, according to a certain percentage of alumi
9、na 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 pow
10、der, 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 d
11、ie bond generated the phenomenon of stamping surface is smooth, no glitches, can replace traditional high-speed steel, tungsten steel. Die with the main parts Die stamping tools is the main process equipment, stamping rely on the relative movement under the mold completed. Processing time because th
12、e 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. (A) of the mold main parts, function and safety requirements 1. Working parts is a di
13、rect 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: (1) be of sufficient strength, can not be broken or destroyed during stamping. (2) should be appropriate to its material and hea
14、t treatment requirements, 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 shoul
15、d 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, b
16、inder 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 to prevent movement and bounce blank. Top of the device, discharge boards role is to facilitate the pieces and clean
17、 up waste. Them by the spring, rubber and equipment, putting on the air-cushion support, can move up and down, knocking out 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 o
18、ut 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 pun
19、ch 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 10 mm
20、. 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 includes templates, die handle, fixed plate punch, plate, stopper, etc. U
21、p 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 be compatible with the workpiece, too large or too small are not conducive to action. Some molds (blanking, punching type mold) to the pi
22、eces 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 whi
23、ch includes screws, nuts, springs, 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 imped
24、e operation to prevent bumps. Die with the development of Since reform and opening, with the rapid development of the national economy, the market demand with the growing Die. In recent years, Die with the industry has been around 15% growth rate of the rapid development of industrial enterprises wi
25、th ownership Die components also changed dramatically, in addition to the professional mold factory outside of state-owned, collective, joint ventures, wholly-owned and private has been a rapid development. As with the accelerating pace of international integration, the increasing competition in the
26、 market, it has been increasingly recognized product quality, cost, and new product development capacities. The cold die manufacturing is the most basic elements of the chain, one of the cold die manufacturing technology to measure a countrys manufacturing sector has become an important symbol of th
27、e level, and largely determine the viability of enterprises. Die with enterprises to increase in recent years many technological advances for investment, technological progress will be seen as an important driving force for enterprise development. Some domestic enterprises have popularized the two-d
28、imensional mold CAD, and gradually began to use UG, Pro / Engineer, I-DEAS, Euclid-IS and other international common software, individual manufacturers have also introduced Moldflow, C-Flow, DYNAFORM, Optris and MAGMASOFT etc. CAE software, and successfully applied in stamping die design. A car cove
29、r mold as the representative of a large stamping die manufacturing technology has made great progress, Dongfeng Motor Corporation mold factory, mold manufacturers such as FAW mold center has been able to produce some car cover mold. In addition, many research institutions and universities to carry o
30、ut technology research and development of mold. After years of effort, in the mold CAD / CAE / CAM technology has made remarkable progress； in improving quality and reducing mold die design and manufacturing cycle, and so contributed. Although China Die with the industry over the past decade has mad
31、e remarkable development, but in many ways compared with the industrialized countries there is still a large gap. For example, the precision machining equipment, processing equipment in Die with the relatively low proportion； CAD / CAE / CAM technology penetration is not high； many advanced mold tec
32、hnology not widely so, resulting in a considerable number of large, sophisticated, complex and long Die life with dependence on imports. With the continuous progress of science and technology, modern industrial production of increasingly complex and diverse, product performance and quality is ever increasing, thus the cold stamping technology put forward higher requirements. In order to adapt to the cold stamping technology industry needs, cold stamping technology itself also in innovation and development. cold stamping technology idea is to improve
