云母片冲压工艺及模具设计外文翻译

1、Overview of stamping dieStampi ng die - in the cold stampi ng, material (metal or non-metallic) processed in to parts (or semi-fi ni shed) a special process equipme nt, called cold stamp ing die (com monly known as cold die). Pun chi ng - is at room temperature, the use of a mold moun ted on the pre

2、ss to exert pressure on the material, to produce a separation or plastic deformation, thereby obtaining a pressure process ing 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 nature(1) Di

3、e along the closed or ope n con tour the material are derived from mold. If bla nking die, punch die, cut off the mold, cut mode, cutt ing mode, split mode, etc.(2) bending mode to bla nk or bla nk sheet along a straight line (curved line) to bend, deform, and thus obtain a certain angle and shape o

4、f the workpiece in the mold.(3) The drawing die is made of the blank sheet opening hollow, or hollow pieces of further cha nges to the shape and size of the mold.(4) Die rough or semi-fi ni shed workpiece is convex accord ing to pla n, direct copy the shape of the die shape, the material itself, gen

5、 erate on ly local plastic deformatio n 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) sin gle process model in a press tour, just completed a die stamp ing process.(2)

6、 composite model is on ly one stati on, in a press tour, at the same stati on at the same time to complete more tha n two or two die stampi ng process.(3) Progressive Die (also known as the modulus of con ti nuity) in the feed ing directi on, rough, with two or more of the station, at the press of a

7、 visit, work in different places on the completion of two or two successive Road over stamp ing die process.The rushi ng Die called the cold stamp ing die.Cold stamp ing die used in cold stamp ing die mold in dustry and its accessories required for the preparation of high-performanee structural cera

8、mic materials, high-performanee 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,

9、was added dropwise ammon ium bicarb on ate, the syn thesis of the raw materials required by the mold and its accessories ceramic material by co-precipitati on method, and the react ion the result ing precipitate was separated by filtrati on, drying, calc ining high-performa nee ceramic mold and its

10、accessoriesmaterial ultrafine powder, and then after molding, sintering, finishing, they get a high-performanee 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

11、its accessoriesstamp ings bonding phe nomenon does not appear i n the stamping process, stamping parts surface is smooth, no glitches, can completely replace the traditi onal high-speed steel, tun gste n steel. Cold stamp ing die used in cold stamp ing die mold in dustry and its accessories required

12、 for the preparati on of high-performa nee structural ceramic materials, high-performa nee ceramic mold and its accessories material zirc onium oxide, yttrium oxide powder and aluminum, praseodymium elements,the preparation process is zirconia solution, a solution of yttrium oxide, praseodymium oxid

13、e solution, alumina sol by mixing dubbed the mother liquor, was added dropwise ammonium bicarb on ate, the syn thesis of the raw materials required by the mold and its accessories ceramic material by co-precipitati on method, and the reaction the resulting precipitate was separated by filtration, dr

14、ying, calcining high-performance ceramic mold and its accessoriesmaterial 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 mad

15、e of cold stamping mold and its accessories, molds and its accessories stampings bonding phe nomenon does not appear i n the stamp ing process, stamp ing parts surface is smooth, no glitches, can completely replace the traditi onal high-speed steel, tun gste n steel.Die with major partsDie stamp ing

16、 and process ing is main process equipme nt, stamp ing parts is rely on, un der the relative movement of the mold to complete. Processing because of lower die, constantly divisio n, if the fin gers con ti nue to en ter or rema in in the mold closed area, will bring the serious threat to their pers o

17、nal security.(A) of the mold ma in parts, fun ctio n and safety requireme nts1. 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 strengt

18、h, can not be broken or destroyed during stamping.(2) should be appropriate to its material and heat treatme nt requireme nts, to preve nt too high hard ness and brittle fracture.2. Positioning parts positioning part is to determine the location of the parts installed blank, there are pins (board),

19、gauge pin (plate), lead is sold, guide plate, knife set from the side, side pressure etc.Desig n should be con sidered whe n positi oning parts easy to operate and should not have had orie ntatio n, I ocati on to facilitate observati on, preferably in the forward positi on, con touri ng to correct t

20、he pin locati on and positi oning.3. Binder, unloading and discharging parts binder componentsare blank holder, binder board.Clamping ring for drawing blank holder force of pressurized, thereby preventing blank in the tangen tial directi on un der the actio n of pressure arch and formatio n of wrin

21、kies. The pressure plate role is to preve nt the billet movi ng and jump ing. Ejector, stripper plate s role is to facilitate a and clea ning up waste. They con sist of spri ng, rubber and equipme nt on the air cushi on rod support, can move from top to bottom, top design should have sufficient ejec

22、ting force, motion to limit. Stripper plate should be minimized the closed region or in the operating position empty slot milling. Exposure of the stripper plate around should be equipped with protective plate, preve nting the fin ger or foreig n bodies into the exposed surface to be blunt, edges an

23、d corn ers.4. Guide elements guide pillar and the guide sleeveis one of the most widely used guide partsIts role is to ensure that the punch and die stamping in the work with a precise fit cleara nee. Therefore, a guide colu mn, a guide sleeve gap should be less tha n the bla nking clearanee. Guide

24、pillar in the lower die seat, to ensure the stroke of the lower dead point, the upper 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 colu m

25、n without feed ing and tak ing5. Supporting and clamping the upper and lower parts which 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 pla ne size, especially

26、 around the direct ion to be compatible with the workpiece, too large or too small are not con ducive to acti on.Some molds (bla nking, pun chi ng type mold) to the pieces of convenien ce, be set up un der the mold plate. At this time the best and the template plate conn ected betwee n the screw, th

27、e two plate thick ness should be absolutely equal. Plate spac ing out the pieces to be able to prevail, not too much, so as n ot 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 pa

28、rts, design choice and flexibility should be tighte ned to en sure the top out of the n eed to avoid exposure to the surface faste ner operat ing positi on, the staff and impede operati on to preve nt bumps.The development of dieSince the reform and opening up, with the rapid development of national

29、 economy, the market of cold stamp ing mold grow ing dema nd. In rece nt years, cold punching mold in dustry has bee n around for 15% growth rate of rapid developme nt, die in dustrial en terprise own ership compositi on also produced treme ndous cha nge, besides factory of state-ow ned and professi

30、 onal mold, collective, joint ven ture, owned and private developme nt has bee n rapid.Alo ng with the developme nt and in ternatio nalizatio n pace is accelerated ceaselessly, market competiti on inten sifies, more and more people have realized that product quality, cost and new product developme n

31、t ability. And die manu facturi ng is the most basic eleme nt of the cha in, cold stampi ng die manu facturi ng tech no logy has become the measure of a coun trys level of manu facturi ng in dustry an importa nt sig n, which to a great exte nt decides the en terprise survival space.Die with en terpr

32、ises to in crease in rece nt years many tech no logical adva nces for inv estme nt, tech no logical progress will be see n as an importa nt driv ing force for en terprise developme nt. Some domestic en terprises have popularized the two-dime nsio nal mold CAD, and gradually bega n to use UG Pro / En

33、gin eer, I-DEAS, Euclid-IS and other intern ati onal com mon software, individual manufacturers have also introduced Moldflow, C-Flow, DYNAFORM, Optris and MAGMASOFT etc. CAE software, and successfully applied in stampi ng die desig n.A car cover mold as the represe ntative of a large stamp ing die

34、manu facturi ng tech no logy has made great progress, Dongfeng Motor Corporati on mold factory, mold manu facturers such as FAW mold cen ter has bee n able to produce some car cover mold. In additi on, many research in stituti ons and uni versities to carry out tech no logy research and developme nt

35、 of mold. After years of effort, in the mold CAD / CAE / CAM tech no logy has made remarkable progress; in impro ving quality and reduc ing mold die desig n and manu facturi ng cycle, and so con tributed.Although China die industry in the past 10 years obtained attract peoples attention to the devel

36、opme nt of many aspects, but compare with photograph of in dustrial developed country to still have bigger differenee. For example, precision machining equipment in the processing of cold stamping die processing equipment in the proportion of relatively low; CAD/CAE/CAM tech no logy popularity rate

37、is not high; many adva need mold tech no logy applicati on is not wide eno ugh and so on, result ing in a con siderable part of a large, precisi on, complex and long life of cold pun chi ng mold depe nds on import.With the con ti nu ous progress of scie nce and tech no logy, modern in dustrial produ

38、ct ion of increasingly complex and diverse, product performance and quality is ever increasing, thus the cold stamp ing tech no logy put forward higher requireme nts. In order to adapt to the cold stamp ing tech no logy in dustry n eeds, cold stamp ing tech no logy itself also in innovatio n and dev

39、elopme nt. cold stampi ng tech no logy idea is to improve and expa nd as much as possible the advantagesof the cold stamping process, to overcome its shortcomings. in the cold stamping tech no logy developme nt, should note the follow ing aspects:(1) Cold stampi ng tech no logy developme nt process

40、should correctly determ ine the process parameters and Die with the shape and size of the part of the work, to improve the quality of stamp ing parts, shorte n the cycle of new product trial, should stre ngthe n stamp ing theoretical study based on the stamp ing theory reach can play a guidi ng role

41、 in the actual product ion abroad has begun to gradually establish a close connection with the actual production of advaneed process analysis calculation method. elastic-plastic finite element method for stress-strain analysis and computer simulation of automobile covering parts forming processto pr

42、edict the possibility of forming a craft program on parts and problems that may arise.(2) to accelerate product replaceme nt, mold desig n to overcome the shortco mings of a long cycle. Should vigorously carry out computer-aided design and manufacture of molds (CAD / CAM) Research. In my country, pa

43、ying particular attention to strengthening the multi-position progressive die CAD / CAM Tech no logy.(3) to meet the n eeds of mass producti on, and reduce labor inten sity. Should stre ngthe n cold stamp ing of mecha ni zed and automated, so that the average, small pieces of high-speed presses in a

44、 multi-positi on progressive die producti on, producti on reached a high degree of automati onto further improve stamping productivity.(4) expa nd the scope of applicatio n of cold stamp ing product ion. So cold press ing both suitable for mass producti on, but also for small batch product ion; both

45、 the gen eral accuracy of product product ion, but also can produce precisi on parts. Should pay atte ntio n to developme nt such as fine blanking (especially thick material fine blanking), forming high-energy, soft mold forming, pressure and process ing new superplastic forming process, but also pr

46、omote the easy mode (soft mode and the low melting point alloy mold), Universal Hybrid model, the use of CNC punch press and other equipme nt.In addition, the performance improvement of sheet metal stamping, mold new material, die developme nt of new process ing methods should be further stre ngthe

47、ned.Die with life and CountermeasuresDie with life is to calculate the nu mber of artifacts pun chi ng. Many factors affect Die life. Mold structure design, manufacture mold punch and die materials used, the quality of heat treatme nt and surface harde ning of the mold and die manu facturi ng precis

48、i on parts and the cold stamp ing material select ion. In additi on, there are die in stallati on, adjustme nt, use, and maintenan ce.1. Mold Design Life(1) Layout desig n of layout methods and take the boun dary value a great impact on the die life, too small to take the boundary value, often causi

49、ng rapid wear and convex mold, die bite wounds on the. Starting from material savings, take the boundary value smaller the better, but take the edge is less than some value, the cut surface of the mold and the quality of life adversely. There will be left beh ind in the bla nking die Q-gap were to p

50、roduce spare parts glitch, or eve n damage the die edge, reduce die life. Therefore, consider increasing the material utilization of the same time, parts must yield, quality and life expecta ncy to determ ine the layout methods and take the boun dary.(2) die structure prone to stress concen trati on

51、 on the crack ing of the die structure, composite structure can be used or mosaic structure, and prestressed structure to enhance the mold life.(3) Effect of clearance when space over an hour, compression stakes, the frictional force is in creased, in creas ing the side wear, i ncreased wear, bla nk

52、ing dischargi ng and push ing parts, materials and conv ex, con cave die betwee n the fricti on will cause the edge side wear tha n the end face of the grinding greatly, but also easy to cause the con vex, con cave die the temperature is high, the metal fragments adsorbed on the edge side, forming a

53、 metal aneurysm, the convex, con cave die chipp ing or crack ing phe nomenon. Therefore, small cleara nee on the life of die is very adverse. The gap is too large, will in crease the convex die and the con cave die edge concen tratio n stress, the stress in creased dramatically, so the blade edge so

54、on yield deformati on and lose the edge. It also in creased the bla nking force, so that the blade edge faster wear, reduce the mold life. But in order to reduce the conv ex, con cave die wear, prolong the service life of the die, in en suri ng the quality of bla nking parts un der the premise, whe

55、n desig ning appropriate use the bigger gap is very n ecessary.(4) Die-oriented structure of the life of a reliable guide for the working parts reduce wear, prevent male and female die bite wound is very effective. In particular, non-small-Q gap Q gap or Die, compound die and multi-position progress

56、ive die even more important. To improve the die life, must be based on processesa nd the dema nd of precisi on, the correct choice-orie nted form and orie ntati on accuracy, the choice should be higher tha n the accuracy-orie nted conv ex, con cave mold with precisi on.(5) the impact of cold stampin

57、g materials, cold stamping materials selected should meet the desig n requireme nts of workpieces and stampi ng process requireme nts, or easy to mold damage and reduce mold life. Poor surface quality of cold stamping, punching, cracking when the workpiece is also easy to scratch mold. Bad cold stam

58、ping plastic materials, deformation is small, easy to press when the workpiece rupture, but also easy to scratch mold. In addition, the material thick ness tolera nces shall comply with n atio nal sta ndards. Die because of a certa in thick ness of material suitable for forming, bending, flanging, d

59、raw ing die of the male and female die structure gap is directly determined by the thickness of the material. Therefore, uneven thickness, will result in waste gen erati on and mold damage.2. The influence of the mold material on the die lifeMold material impact on the life of the die mold material

60、properties, chemical composition, orga ni zati onal structure, hard ness and metallurgical quality comprehe nsive reflect ion. Among them, the most obvious of material properties and heat treatment quality impacts. The nature of the mold material is a big in flue nce on the die life. As will be the