1、 Automobile manufacture stamping process of new development Automobile manufacture has a 60-70% of metal parts must be approved by the plastic processing forming, stamping process is complete metal plastic forming a kind of important means, it is the most basic, the most traditional, the most import
2、ant one of metal processing method. Such as vehicle body all kinds of covering parts, car support pieces, structure strengthen pieces, theres plenty of auto parts, such as engine exhaust muffler, hollow tube bending and camshaft, the oil pan, engine stents, frame structure, horizontal longeron etc,
3、it is by stamping technology positively precision, multi-function, high efficiency and energy saving, safe cleaning production direction, stamping workpiece manufacturing technology level and quality, in great degree of automobile manufacturing quality and cost has direct impact. So-called stamping
4、technology refers to the adaptability of the stamping to handicraft, namely the design of stamping in size, size accuracy and benchmarks, structure shape stamping processing of compliance with technological requirements. Automotive stamping parts should be good technological characteristics, and the
5、 economy, measure the level of the important symbol has stamping process number, body assemblies block number and size, stamping structure, and other factors. Reduce the number of punching process procedure, that means less stamping tooling quantity, number of packages, save simplified punching proc
6、ess of conveyors, Narrows the operators and stamping area, is to save investment and energy consumption extremely good measures, so stamping manufacturers can put punching process reduce vehicle number design as the important way to manufacture cost, even ? Modern stamping development and research o
7、f the major subjects include: (1) module type and control； stamping (2) new material and composite stamping processing new craft； (3) special stamping technology； (4) computer simulation stamping mold testing technology； and virtual (5) die & mould manufacturing technology, (6) stamping process of a
8、utomatic monitoring and instability mechanism analysis and so on . Module type stamping Module type of prominent advantages in stamping the stamping processing system of the flexible and efficient production of organic unifies in together. Flexible meaning a broader, such as stamping the geometry of
9、 the various demands, so long as can be obtained through the freedom to programming, which reflects the processing shape of flexible. And as both to be suitable mass single variety stamping production, more for small batch multi-species processing play advantage, and also show flexibility. In a nuts
10、hell, module type stamping water-holding point is: (1) the stamping process can be replaced rapidly segment mold to improve production efficiency； (2) due to its strip for belt and masking belt device, can save another set feeding blanking process, (3) achieved great work pieces the non-stop machini
11、ng, (4) can both independent and can become series of control combination dies action can continually stamping processing； (5) dies with programmable and the flexible characteristics. A module type stamping processing system by a with control function module type of cold stamping press, coil strip s
12、end into outfit porch, strip correction machines and programmable feeding device, etc. The stamping system at run-time can undertake stamping transverse displacement, strip feeding positioning, die repeat operation and automatic adjustment work step punching adjustment etc multiple functions. Becaus
13、e the stamping process programmable stamping, make this kind of module type stamping system can adapt production requirements, flexible in same strip on March different workpiece and batch production, realizing mixed non-stop string &joint processing, also in two sides stamping workpiece machining,
14、which has greatly enhanced the work efficiency, have data show that the module type stamping makes processing cost can fall to 40% - 50%. The current module type stamping device integration is very high, in width is 300MM size range can arrange of 35 mold, through the roof top of stamping die for in
15、dependent type series of control, is formed namely die of integrated control. The whole system programmable in WINDOWS user interface and menu under implementation, programming involves mould along the lateral positioning shaft servo drive positioning, strip inspection correction and longitudinal fe
16、eding positioning, stamping quality follow-up inspection, punching machine； the adjustment and Condition monitoring and versatility. When stamping reconfigure or alteration, these changes would be parameters and controlled system to store, next time query and invoke. Declarations Die data include th
17、e punch and their combination tags, punch combination in X, Y of die and mould shaft Numbers coordinates and other information. Figure 3 shows programmable punching system, figure in A standard mould transverse axis, can undertake servo dynamic to stamping area, B for the supporting shaft with punch
18、ing die, C, D for spare axis to orange roll type with material are feeding. And submillimeter stamping project And submillimeter stamping refers to the automotive stamping accuracy control at 0 to 1.0 MM within the scope of the traffic in the past, and manufacturing error of 2MM compared, is a very
19、big enhancement. This is an improving punching quality and manufacturing technology as the goal of integrated project. The project with 2MM engineering are all in the late 1990s America QiCheJie conduct large-scale research project. So-called the car is 2MM engineering knowledge, body assembly size
20、changes within 2MM quantity control, greatly in strict in the original 8MM error range. Stamping processing forming technology affect auto body manufacturing level is one of the key factors, the American experts worked in a car assembly line to over 50 cases field analysis shows that, cause body siz
21、e error change many reasons, stamping itself size caused by error accumulation 23 percent, its main reason is that the traditional based on experience and original technology based on low level of mold design and manufacturing. And submillimeter stamping is the center of precision stamping with incr
22、easing agility two goals, precision is to make the stamping size accuracy control in 0 mm or and submillimeter level, the key is to control body stents, pillar on the pieces of the feet, and make changes in body covering parts, such as partitioned degrees by whole left-right side plate and the top c
23、over plate, etc. Increasing agility meaning is refers to reduce stamping prajapati was preparation time up to 30%, including tooling design, manufacturing and tooling, sample preparation time, in order to achieve greatly shorten the purpose of the new models manufacturing cycle, this project diet ar
24、e die-cutting and assembly integration design, stamping system agile design and manufacturing, stamping process of intelligent detecting and monitoring, whole system integration four subsystems project. Through a study of the program and submillimeter stamping, stamping technology has witnessed prog
25、ress, including: (1) the stamping process and component assembly process design by based on experience and the traditional craft to science and data process of transformation, (2) stamping design to CAD and simulation test mode transformation, rejected traditional attempt method, (3) to implement the mould design manufacture serial manner by the past to parallel transformation, (4) realized process monitoring and equipment maintenance from passive response to
