Abstract describes the current situation and the technological level of domestic stamping equipment , and according to technology trends and market dynamics forging machine at home and abroad , the prospect of the development direction of punching machine .
Forging Machine as an important part of the industrial base of equipment, aerospace , automobile manufacturing , transportation , metallurgy and other important industrial sectors are widely used. Especially in recent years , the rapid development of the automobile industry as the leading , greatly promoted the progress of China stamping production . China-made large-scale precision and efficient equipment, automated production lines , F MC, FMS and other high-tech and high value-added stamping equipment is equipped with China’s manufacturing industry .
A stamping device status quo
In the automotive , aerospace , electronics and home appliances , require a lot of metal plate and shell parts , especially in the automotive industry requires production scale, vehicle personalization and cover large integration. In the 21st century , the rapid development of China’s automobile industry , in the face of this situation, our plate stamping process and the corresponding device has made great strides .
1 . Heavy mechanical press and its coverage of the production lines, large multi-station presses
Peugeot car cover is the most important quality sheet metal parts , is a typical piece of large stampings , its production is mainly in two ways : first, accompanied by a number of NTU robotic automation of heavy mechanical presses , stamping production line consisting of flexible automation ; the second is the application of large multi-station press production .
( 1 ) single connection automated stamping production line to meet the needs of automated stamping production line , the domestic well-known enterprises in the press late 20th century , they were high-performance single connection vigorously press development and production . Among Jinan Machine Tool Group Corporation, Shanghai forging machine tool plant , Qiqihar Second Machine Tool Plant as the representatives , has developed a four-point closed J47-1250/2000 type double action deep drawing presses , S3P-630 closed -type four-point presses , PE4 - HH-600 - 2TS four o’clock single action press , PD4-HH - 800/600 - 2TS four o’clock double- action press , 30000kN closed two-point automobile frames presses, into a series of single- link drive action Press and other specifications of the large double action deep drawing presses . Composed of them automated press line with a large tonnage, large stroke , high tops, and large tonnage air, robot automatic loading and unloading system, automatic die change systems and fully functional touch-screen control systems , production speed, high accuracy. These stand-alone connection has been successively equipped with a number of large-scale automated stamping production line of the first automobile factory, Chongqing Changan Automobile Factory and other automotive industry , and is the more automobile plant and the expansion of foreign companies . August 2006 , Jinan Second Machine Tool Company in Thailand Sa Schmidt offers a 32000kN large stamping production line, fully meet the car fast , high-precision and high production requirements.
Typical configuration and use of such production lines : open single point press retrofit roller feeder ( or pneumatic feeder ) into the line, can be used as a single ( multi- ) processes for stamping , good operability ; open two-point press installation of multi-station feeding device , uncoiling device and leveling devices , consisting of multi-station stamping production line. Due to small footprint, inter-process handling small , so is increasingly optimistic about stamping ; install high-speed presses cam split type feeder, uncoiling leveling device into the line, punching special parts , such as motors , such as silicon steel .
( 2 ) In a large multi-station presses Stamping areas , a large multi-station press is the most advanced and efficient stamping equipment is highly automated , high flexibility typical. Usually consists Destacker , large presses , conveyor system and workpiece coordinate palletizing station and so on. Tact up to 16 ~ 25 times / min, 4 to 5 times the manual feed line , 2 to 3 times to connect single automated production line . Is the world’s automotive industry should be preferred to the most advanced stamping equipment , the world has been able to produce 95000kN large multi-station press .
Industrialized countries such machines in the past but unique to the late 20th century to the early 21st century, China has also been developed and achieved success.
Jinan Second Machine Tool Group in 1999 in cooperation with the German company made ten thousand Garton two 20000kN large mechanical multi-station presses , and in early 2005 with the world ’s largest auto parts supplier --- American Dana (DANA) Company signed a supply contract , to provide a 50000kN heavy multi-station presses . The machine uses electronically controlled synchronous , electronic servo coordinate feeding, multi-link , fully automatic die change , die protection and fieldbus control and other international advanced technology, remote diagnostics , remote control and network communications and other automation functions for automobile manufacturing sheet metal parts deep drawing, bending , punching and forming , such as cold stamping process . Is by far our largest export tonnage , the highest technical content, the highest degree of automation stamping equipment. Jinan Machine Tool Company for strong R & D and manufacturing capabilities and good market performance, was hailed as foreign users ’ world’s top five manufacturers of CNC equipment . " To date , this type of multi-station press has not been widely used in the domestic auto industry , but the market is very promising.
2 CNC plate punching , cutting, folding machines and flexible manufacturing production line
Our CNC punch ( scissors \ \ fold ) machine began in 1982 , after 20 years of development, has been to 4 -axis control , increased accessibility , die -digit increases and with two rotation mode bits , and further development of the hydraulic drive 4, 5 -axis control , and now the network has emerged CNC turret punch press . From the earliest production enterprises in Jinan Foundry and Metalforming Machinery Research Institute to develop a number of companies , there are quite powerful CNC engineering company Zimmer Jinan , Qiqihar Machine Tool Group Corporation, Jiangsu Yawei company Yangli Corporation, Hubei Tri-ring Group Company and Jiangsu Jinfangyuan companies.
( 1 ) CNC punch Currently, many users tend to use complex CNC punching machine ( CNC punching and shearing can be composed of flexible manufacturing line ) , but the market is still a great stand-alone CNC punch press . CNC punch advanced features are: the use of special high-performance servo- hydraulic system hydraulic drive ; nibbling times higher ( when step 0.5mm, the frequency of 600 to 1000 times / min), good punching stability ; smart clamp reduce red cut dead zone ; using brush -type table to ensure the surface quality of the sheet ; table speed high ( axial 80m/min, synthetic 120m/min); has two to four automatic indexing stations ( large diameter die set its on reducing the turret retooling inertia ) ; adoption of open CNC system , user-friendly , highly scalable , and is equipped with highly efficient automatic programming software . Board is mainly used with a variety of sizes pass the stamping process , in large electrical control cabinet processing industry has a wide range of markets , can also be used for other high-volume plate stamping processing.
( 2 ) CNC punching and shearing machines and flexible manufacturing line CNC punching and shearing machines by CNC punching and CNC cutting angle collection is made of sheet metal punching, forming and cutting can be completed on it, the most suitable for the sequence there are processes of plate bending process . Multiple processes share a set of numerical control system, hydraulic system and feeding robot , the connection angle compared with CNC punch and shear machine alone can not only reduce investment in equipment , saving floor space, reduce the failure rate , but also as a host composed of punching and shearing flexible manufacturing line.
Domestic advanced CNC punching and shearing flexible manufacturing lines are: Zimmer Jinan CNC manufactured CI -type flexible manufacturing line , which consists of PS31250 CNC punching and shearing machines , sheet metal warehouse, sucker -type feeder, stacking and sorting devices control system , complex machines nominal force ( punching / shearing ) 300/280kN, processing sheet size 1250mm × 5000mm, machine 5 -axis control , the entire line productivity ( steel ) 8 / h; Jiangsu Jinfangyuan manufactured APSS type flexible machining line, by a punching and shearing machines , positioning tables and automatic feeding robot composed of nominal force 300kN, processing sheet size 1250mm × 2500mm. The above two lines have reached the international advanced level.