云母片冲压工艺及模具设计外文翻译大学论文.docx

1、云母片冲压工艺及模具设计外文翻译大学论文Overview of stamping die Stamping die - in the cold stamping, material (metal or non-metallic) processed into parts (or semi-finished) a special process equipment, called cold stamping die (commonly known as cold die). Punching - is at room temperature, the use of a mold mounted

2、on the press to exert pressure on the material, to produce a separation or plastic deformation, thereby obtaining a pressure processing method of the required parts. Stamping die in the form of many, the general categories according to the following main features: 1. Classification under the craft n

3、ature(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 certain angle and s

4、hape 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 material itself,

5、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 process combination classification (1) single process model in a press tour, just completed a die stamping process. (2

6、) 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, at the press of a visit,

7、 work in different places on the completion of two or two successive Road over stamping die process. The rushing Die called the cold stamping die. Cold stamping die used in cold stamping die mold industry and its accessories required for the preparation of high-performance structural ceramic materia

8、ls, high-performance ceramic mold and its accessories material zirconium oxide, yttrium oxide powder and aluminum, praseodymium elements,the preparation process is zirconia solution, a solution of yttrium oxide, praseodymium oxide solution, alumina sol by mixing dubbed the mother liquor, was added d

9、ropwise ammonium bicarbonate, the synthesis of the raw materials required by the mold and its accessories ceramic material by co-precipitation method, and the reaction the resulting precipitate was separated by filtration, drying, calcining high-performance ceramic mold and its accessories material

10、ultrafine powder, and then after molding, sintering, finishing, they get a high-performance ceramic mold and its accessories material.An advantage of the present invention is a long service life of the present invention is made of cold stamping mold and its accessories, molds and its accessories sta

11、mpings bonding phenomenon does not appear in the stamping process, stamping parts surface is smooth, no glitches, can completely replace the traditional high-speed steel, tungsten steel. Cold stamping die used in cold stamping die mold industry and its accessories required for the preparation of hig

12、h-performance structural ceramic materials, high-performance ceramic mold and its accessories material zirconium oxide, yttrium oxide powder and aluminum, praseodymium elements,the preparation process is zirconia solution, a solution of yttrium oxide, praseodymium oxide solution, alumina sol by mixi

13、ng dubbed the mother liquor, was added dropwise ammonium bicarbonate, the synthesis of the raw materials required by the mold and its accessories ceramic material by co-precipitation method, and the reaction the resulting precipitate was separated by filtration, drying, calcining high-performance ce

14、ramic mold and its accessories material ultrafine powder, and then after molding, sintering, finishing, they get a high-performance ceramic mold and its accessories material.An advantage of the present invention is a long service life of the present invention is made of cold stamping mold and its ac

15、cessories, molds and its accessories stampings bonding phenomenon does not appear in the stamping process, stamping parts surface is smooth, no glitches, can completely replace the traditional high-speed steel, tungsten steel.Die with major parts Die stamping and processing is main process equipment

16、, stamping parts is rely on, under the relative movement of the mold to complete. Processing because of lower die, constantly division, if the fingers continue to enter or remain in the mold closed area, will bring the serious threat to their personal security. (A) of the mold main parts, function a

17、nd safety requirements 1. Working parts is a 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: (1) be of sufficient strength, can not be broken or destroyed during stamping. (2

18、) should be appropriate to its material and heat 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

19、 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 discharg

20、ing parts binder components are blank holder, binder board. Clamping ring for drawing blank holder force of pressurized, thereby preventing blank in the tangential direction under the action of pressure arch and formation of wrinkles. The pressure plate role is to prevent the billet moving and jumpi

21、ng. Ejector, stripper plate s role is to facilitate a and cleaning up waste. They consist of spring, rubber and equipment on the air cushion rod support, can move from top to bottom, top design should have sufficient ejecting force, motion to limit. Stripper plate should be minimized the closed regi

22、on or in the operating position empty slot milling. Exposure of the stripper plate around should be equipped with protective plate, preventing the finger or foreign bodies into the exposed surface to be blunt, edges and corners. 4.Guide elements guide pillar and the guide sleeve is one of the most w

23、idely used guide parts Its role is to ensure that the punch and die stamping in the work with a precise fit clearance. Therefore, a guide column, a guide sleeve gap should be less than the blanking clearance. Guide pillar in the lower die seat, to ensure the stroke of the lower dead point, the upper

24、 end of the guide column template above the top surface of a minimum of 5 to 10 mm. Guide pillar should be arranged in away from the module and the pressure plate part, so that the operator arm over the guide column without feeding and taking 5. Supporting and clamping the upper and lower parts whic

25、h includes 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 be compatible with the workpiece, too large or too small are n

26、ot 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 pre

27、vail, not too much, so as not to break the template. 6. Fastening parts which 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 avo

28、id exposure to the surface fastener operating position, the staff and impede operation to prevent bumps. The development of die Since the reform and opening up, with the rapid development of national economy, the market of cold stamping mold growing demand. In recent years, cold punching mold indust

29、ry has been around for 15% growth rate of rapid development, die industrial enterprise ownership composition also produced tremendous change, besides factory of state-owned and professional mold, collective, joint venture, owned and private development has been rapid. Along with the development and

30、internationalization pace is accelerated ceaselessly, market competition intensifies, more and more people have realized that product quality, cost and new product development ability. And die manufacturing is the most basic element of the chain, cold stamping die manufacturing technology has become

31、 the measure of a countrys level of manufacturing industry an important sign, which to a great extent decides the enterprise survival space. Die with enterprises to increase in recent years many technological advances for investment, technological progress will be seen as an important driving force

32、for enterprise development. Some domestic enterprises have popularized the two-dimensional 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 MAGMASOF

33、T etc. CAE software, and successfully applied in stamping die design. A car cover 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 cove