In recent years, the respect is machined in the metal, machine tool of high accuracy numerical control and large muti_function machining center got applied extensively; Shape in the metal respect, press of high speed machinery, hydraulic press, efficient multitask press and full automatic the treatment facilities with the mechanical and electrical products that changes product line to already became dimensions to change and automobile indispensable manufacturing industry. As one of among them delegates, of a kind of 21000kN that can get used to different punch to manufacture technology large muti_function high speed " 3 move " hydraulic press has begun to apply at the car to create a field. Developing punch of development metal plate to shape is first working procedure of car workmanship. Because punch production facilities is very high, the car makes engineers must improve punch to manufacture technology ceaselessly, in an attempt to reduces manufacturing cost, make manufacturing benefit the greatest change. Produce technical limitation as a result of the mould before, double move craft of stamping workpiece drawing to hold the mainstream, but the progress that makes a technology as the ceaseless promotion application of automation product line and mould, stamping workpiece sheet is moved turn over drawing to produce craft to be accepted by place of more and more automobile factory home. But the change that punch produces the change of craft to mean punch to produce facility construction again, regard long-term a huge sum as the punch equipment of investment, any cars produce manufacturer to not be willing to change prematurely to have facility and raise investment cost. Have for give attention to two or morethings double move pull Yan Hexin to add sheet to move turn over drawing the production of mould of craft of two kinds of different punch (see a picture 1) , development of company of German Schuler compressor developed a kind to be able to use sheet / double use two kinds of patterns have inside slide block, outside pull below the hydraulic pressure inside slide block and base of mat muti_function " 3 move " hydraulic press. Say for " 3 move " , compare because of it just about normally machine of double dynamic pressure increased fall inside a base play mat function. Although the efficiency of the mechanical press of coequal norms wants,compare hydraulic press tall, but the structural character of system of mechanical press connecting rod decided its cannot realize this function. Graph 1 sheet moves mould and double movable mould to provide assemble characteristic of structure of manufacturing technology sketch map to construct in the machinery of press respect, this hydraulic press is had inside slide block and outside slide block structure, in order to suit double move draw the manufacturing demand that extends a pattern, at the same time this hydraulic press is configured again have at 8 o'clock (also but at 4 o'clock or at 6 o'clock) pull below hydraulic pressure of high speed of type of module of independent programmed control mat, move the production that returns drawing mould in order to get used to sheet. In addition, move in sheet when turning over drawing mould to produce, to prevent inside / outside the opposite shift of slide block, inside / outside installed between slide block dynamoelectric and adjustable mechanical chain unit (see a picture 2) , make underside of slide block of inside and outside is in same plane getting power thereby, made sure force of slide block of inside and outside is even action at the pattern plate on the mould. Graph 2 inside / outside chain of slide block machinery and pull delay Nextpage of deepness regulating unit to be in of mould clamp choose a side, its are advanced the gender depends on inside slide block clamp is used rotate litre fall type mould clamp (see a picture 3) , when so that be in,odd movable mould has producer type, clamp of slide block mould can promote systole inside less than of the underside below slide block inside, do not affect sheet to move the outfit that turns over the pattern plate on type of drawing model an organic whole to place thereby. Slide block used clamp of movable type mould outside (see a picture 4) , the outfit that can get used to different measurement mould is placed, avoided to swing the pattern plate on clamp requirement or the defect that the circle that approach a limit must agree with dimension of slide block underside. Graph 3 rotate litre fall type mould clamp pursues movable mould of 4 movable type report provide clamp to command systematic respect in hydraulic pressure, control of slide block hydraulic pressure used Schuler company to have patent dynamic force to control a system. This system can be pulled according to the spare parts delay shape phase getting power shapes differently in the process the crock of working hydraulic pressure that automatic switch enables different amount (see a picture 5) , pull differently in order to obtain delay shape speed, reduce specific power consumption thereby, raise significant production to rush second. For example: Phase of low-pressure power demand starts crock of a job in order to obtain taller pull delay speed; Phase of medium pressure demand starts crock of 2 jobs hydraulic pressure; In shape the level with pressure higher demand, if the spare parts shapes pressurization, protect press level to wait, automatic switch goes to 3 or more many jobs crock works at the same time condition, assure a spare parts in order to get higher pressure to shape not spring back. This function is pulled at different spare parts or a spare parts applicably delay shape the different level in the process. Graph 5 slide block are pulled delay parameter of specifications of Nextpage of sketch map of distributinging citing of switch of working process phase dimension of mesa of workbench of this hydraulic press is 4500mm × 2400mm, gross tonnage is 21000kN, can use at the inside and outside of large automobile body such as car whole side wall to enclothe produce or try a model. This press differs according to manufacturing mould, can make machine of double dynamic pressure or machine of odd dynamic pressure use respectively. When working with machine of double dynamic pressure, inside / outside the force of slide block is 13000kN respectively (3 crocks) , 8000kN (4 crocks) ; When working with machine of odd dynamic pressure, inside / outside chain of slide block machinery composes single slide block, slide block force is 21000kN, inside / outside the head office Cheng of slide block can achieve 2175mm, 1750mm respectively, the journey of slide block locates precision is as high as 0.
1mm, speed of slide block light locomotive trip is as high as 750mm/s (and the speed of light locomotive trip of domestic general hydraulic press amounts to 400mm/s only) , inside slide block (double when moving) / slide block (when slide block of inside and outside interlinks sheet to move) the biggest pull delay speed to achieve 300mm/s (and the slide block of press of domestic congener body is pulled delay speed most it is 60mm/s about) , when nominal force inside slide block / of slide block pull delay shape speed can amount to 67/41mm/s (and the nominal force of domestic hydraulic press is pulled delay shape speed makes an appointment with 8 ～ 16mm/s only) . In addition, the dynamic force of the tall sensitivity that Schuler firm used in process of job of the slide block inside this press controls a system, its function behaves as follows: When function of machine of double dynamic pressure, slide block pulls inside delay shape working rate: The first phase (a crock works) press job rate: The biggest 300 Mm/s; The 2nd phase (2 crocks work) press job rate: The biggest 175 Mm/s; The 3rd phase (3 crocks work) press job rate: The biggest 115 Mm/s; When nominal force (3 crocks work) press job rate: The biggest 67 Mm/s. When function of machine of odd dynamic pressure, slide block (inside / outside slide block machinery interlinks) pull delay shape working rate: The first phase (a crock works) press job rate: The biggest 300 Mm/s; The 2nd phase (2 crocks work) press job rate: The biggest 175 Mm/s; The 3rd phase (3 crocks work) press job rate: The biggest 115 Mm/s; The 4th phase (7 crocks work) press job rate: The biggest 70 Mm/s; When nominal force (7 crocks work) press job rate: The biggest 41 Mm/s. The part that has in odd movable mould is pulled delay shape in the process, spacer of hydraulic pressure drawing has crucial effect. This machine configures the mat of hydraulic pressure drawing that can accuse independently at 8 o'clock, gross tonnage is 6000kN. Pull in the spare parts delay shape in the process, crock of hydraulic pressure of type of module of 8 independent pilot can adjust alone the force that approach a limit, improve a spare parts to shape the effect, reduce stamping workpiece to pull greatly delay those who shape is broken, knit wait for a phenomenon. Modular the adoption of hydraulic pressure crock makes hydraulic pressure crock makes standardization, facilitating maintenance changes, reduced manufacturing cost not only, and reduced equipment to maintain time greatly. The effective job journey that drawing of this hydraulic pressure fills up is as high as 350mm, and have in next dead center area but the extraction of the 20 ～ 100mm according to set of process designing of freedom of different spare parts the journey, namely the spare parts is pulled delay shape after finishing, hydraulic pressure mat carries the spare parts on the head first tall 20 ～ 100mm, with convenient manipulator or spare parts of jockey person collect, solved large stamping workpiece to pull delay after shaping, stamping workpiece drawing of patterns the difficult, a hard nut to crack that takes a difficult, changeful look. At present the hydraulic press of this type is in applied foreground home already had 3, mix in cup of China morning gold respectively devoted production uses one steam public, satisfied existing old model double move pull delay mould and new model sheet to move the production that returns drawing mould, achieved high yield is raised below the premise that change manufacturing technology and does not raise installation cost can purpose. In addition, 2005 second half of the year will have 2 to be the same as a type again " 3 move " hydraulic press is in Shanghai masses put into production. What move as a result of high speed of this hydraulic press is characteristic, assured to be close to the manufacturing metre of mechanical press. Above is used at trying a model except 1 in 5 press outside, the others all applies 4 times in automation punch product line. Of course, its advanced hydraulic pressure / electronic control technology and the value that muti_function rigid structure decided to its do not poor, nevertheless, can get used to the versatility of different production technology in view of its, this type hydraulic press is in abroad at the same time very the favour that accepts a mould to make manufacturer, what should face because of them is much furniture the user of automobile manufacturing industry that different production technology asks, must can satisfy the requirement with one multi-purpose machine. Above place is narrated, the hope can produce manufacturer to domestic hydraulic press in order to inspire, raise oneself to develop development ability ceaselessly, produce a sex to be able to satisfy domestic numerous car and mould manufactory valence comparing is higher as early as possible the high speed of domestic demand is muti_function hydraulic press, the car that allows home makes an enterprise also accomplish the car that makes his with his equipment, expand thereby our ethical economy, the competition ability that enhances our manufacturing industry to go up in international economy arena. CNC Milling