Chen Changnian: ? Lou of Huan of Cao of ⒍   slaughters far  ?AFTL)

  • Time:
  • Click:154
  • source:WEDEMEYER CNC Machining
The first car makes it may be said of engine production equipment equipment, it is contemporary car component of compositive production technology classical. Those who start mechanism key component is nimble and flexible transfer matic (AFTL) attributes the 3rd acting automatic product line, 95% or so entrance. From 20 centuries end up to now, according to not complete count, had had make an appointment with 200 installation or will install, average unit price restrains 20 million dollar. Be like, only 2008 ～ of company of Italian horse stalking or branch offerred 20 AFTL namely 2010. According to statistic of association of Chinese machine tool, "925 " during dimensions of market of engine production equipment is 75 billion yuan about. The crucial technology of AFTL is the digitlization design of product line above all. This requirement supplier according to seed profit, nimble concept, use emulate a technology in coordination---Make the user can choose the plan that technology, economy optimizes. After using this kind of digitlization to design a technology, its are new the product pushs the speed to the market to be able to be accelerated 30% , repeat a design to decrease 65% , manufacturing program flow is compact 40% . AFTL still should be had can reframe the high speed machining center of module (RMT) , as new generation treatment cylinder body, crock covers the core technology of product line. Its feature is: Modular, high speed is changed, dry cutting. Only modular ability implementation can reframe; has only modular ability is reduced substantially make and use cost. AFTL still needs online detect. The online nicety that to realize large quantities of amounts tall productivity condition issues detects, the requirement detects the resolution of equipment amounts to 1 μ M, whole the measurement that measures form appearance is periodic in tens of second less than, measure a dot to achieve millions of above. Count an import completely at present. Additional, flexible in AFTL the design of clamping apparatus is crucial. Flexible clamping apparatus design needs workmanship of perfectness spare parts, this also is the hang of the core technology that foreign enterprise blocks to our country and gain, also be the soft costal region of enterprise of our country machine tool. Invite public bidding of FTL of one steam engine is medium recently, german company is versed in flexible clamping apparatus price makes an appointment with 200 thousand euro, comparative with price of horizontal machining center! Content shedding system is regarded as " the 2nd kind of production " , include automatic fluctuation makings, workpiece to transmit store matter of plant of carry, real time sheds a system, but great the efficiency that increases contemporary engine production and dependability. Offer a possibility for 0 inventory. Advanced plant matter sheds a system is profit of seed of implementation of contemporary engine production and nimble key. Automatic fluctuation expects newest development is to use a robot (manipulator) automatic fluctuation makings, so that increase,versatility is mixed flexible. In AFTL, information system is attached most importance to especially should, especially transfer matic CNC controls a system, its are complex degree is not to control individual machine tool to be able to be likened to only. There are a few a few top class companies to have this capacity only on the world, our country is current and blank. Finally is the requirement of two index, technology of transfer matic dependability: Need satisfies Cpk of index of process capability of whole transfer matic to be worth ≥ 1.

67, the requirement of 3000h of ≥ of MTBF of mean time between failure. Nimble and flexible the basic technology requirement of transfer matic is contemporary housing kind transfer matic of spare parts machining is belonged to " nimble and flexible transfer matic " , so that satisfy housing of contemporary motivation assembly kind spare parts product line " much breed, big crop, efficient, low cost " need. Nimble and flexible the machine tool type that transfer matic uses is " firm soft mix " model -- satisfy product line with high speed machining center requirement of Gao Rou sex, satisfy with numerical control private plane efficient requirement, can reduce investment cost. Strong soft mixture pitch (deepness, medium degree, spend gently) should from use the number that emulates a technology in coordination to design choose in the case with all possible means. Compositive application is the following in AFTL line technology: FA technology, say again " nobody or light-off production " technical; housing kind housing of; of technology of dry cutting of; of technology of cutting of spare parts high speed, MLQ cutting kind smart other people of; of technology of mixed flow of work of much breed of product line of; of processing technique of spare parts nicety sheds information of systematic; product line to collect, technology of analysis, feedback, compositive control. 1.

Nimble and flexible the craft of high speed treatment of transfer matic and equipment (basis of craft of cutting of 1) high speed the historical data of Japanese automobile manufacturing industry, automobile manufacturing industry is average 5 every years cutting efficiency should rise 28% , among them cutting rate rises on average 19% , the scope that feed rate rises 8%; on average and efficiency of cutting of the last few years increases is in 30% above. Production engine is at present main the manufacturing metre of the spare parts had shortened 30 ～ 40s, before comparing ten years, shortened 50% . Start production enterprise to machine efficiency to rise, undertook the technology is improved. Be like, shanghai masses car passes use HSK knife handle, cutting tool of coating hard alloy, cermet, CBN, PCD, add speed of rotate speed of contented tall main shaft, tall feed, high / decelerate (3) requirement -- only " 3 tall " ability realizes efficient treatment (HPC); Shanghai general motors, the CBN300 razor blade that passes use SECO company undertakes plane of casting pig cylinder body do type milling, cutting speed achieved 1600m/min, cutting tool life promoted 4 times. (Machine tool of type of module of 2) high speed is used at aluminium alloy housing kind top rotate speed is main shaft of spare parts product line commonly 15000 ～ 20000r/min, workpiece feed top speed 40 ～ 60m/min, fast and floating rate is as high as 60 ～ 90m/min; acceleration to achieve 1.

0 ～ 1.

5g, the time that change a knife (knife - knife) 1.

5 ～ 3.

5s, even 0.

8 ～ 0.

Precision of 9s; fixed position / repeat fixed position precision -- workbench 1m is the following, ) of standard of M (VDI of μ of 8 μ M/4, workbench 1m above, ) of M/M (VDI standard of μ of 10 μ M/5. The capability index of machine tool project of crucial working procedure / Cmk/Cpk of process capability index is worth ≥ 2.

0/1.

67. Have can reframe the high speed machining center of module (RMT) , as new generation treatment cylinder body, crock covers the core technology of product line. Its feature is: Modular, high speed is changed, dry cutting. Current, the newest development of this kind of machining center is, advocate motion uses electric main shaft generally, feed motion uses linear electric machinery generally. Use structure of the box in type of 3 coordinate module and box generally. At the same time the requirement contains a knife to detect, inside machine measure automatically, automatic compensation system, right knife device. 2.

Nimble and flexible the intelligent other people of transfer matic sheds system, information system (1) intelligence other people sheds a system to be expected by raw material processing, memory, fluctuation transform device of the workpiece between device, machine tool is comprised. Workpiece library is provided in machine tool of only station numerical control or raw material library and device of automatic fluctuation makings (contain manipulator, robot) below the condition, be in namely with stock memory and deferent reach the condition with its compositive automata to fall, form flexible production unit (FMC) . Automatic fluctuation is deployed to makings and stock store and convey in machine tool of much stage numerical control reach the condition that with production planned dispatching maneuver calculates machine is compositive to fall, form flexible production system (FMS) . Containing planned dispatching system and workpiece when one-way flow, composition is flexible product line. (2) intelligence other people sheds a part -- what nobody carry marked characteristic of car AGV(Automatic Guided Vehicle)AGV is nobody drive, the equipment on AGV has automatic oriented system, can ensure a system to be below the situation that does not need artificial pilotage can the course that the edge books is automatic travel, carry goods or stock automatically destination from initial drop. Another characteristic of AGV is flexible good, automation rate changes a standard high with intelligence tall, the travel method of AGV is OK wait for a change according to technological process of requirement of storage freight lot, production and change neatly, and run the charge that method changes and traditional conveyer belt and rigid deferent line photograph compare very cheap. AGV matchs stock to assemble and unassemble commonly orgnaization, can sort equipment with other other people automatic interface, content of solid merchandise on hand and stock assemble and unassemble with carry whole process automation. In addition, AGV still has the characteristic of clean production, AGV support provides power from the accumulator of the belt, noise, free from contamination is not had in moving process, OK in the place of cleanness of a lot of requirement work environment applying. The AGV application in automatic product line -- color piece AGV is in the product line of manufacturing industry can of the stock of efficient, accurate, agile ground that finish carry the mission. Can comprise flexible content to flow by much stage AGV carry a system, carry a course to adjust and can be adjusted in time as what produce technological process, make can be made on a product line give ten kinds of products, what increased production greatly is flexible the competition ability with the enterprise. Volvo Kalmar car of Sweden assembled a factory to carry systematic flexibility to rise 1974, introduce the automatic car assembly line that is based on AGVS to be carry tool, this assembly line is laded by Duotaike the AGVS composition of car bodywork, after introducing this assembly line, assembled time to decrease 20% , assemble breakdown to reduce 39% , investment reclaims time is reduced 57% , labour force was reduced 5% . Current, AGV is in plant of world main car, wait for car plant like general, Feng Tian, Kelaisile and masses make and got applied generally on assembly line. (System of 3) intelligence information basically includes product line control, cutting tool to change, tool and add change, workpiece attempers, quality of automatic process designing, automatic monitoring, automatic compensation, workpiece detects automatically, cutting tool wears away or after damaged change automatically and call the police automatically etc. The requirement has CAD/CAM function, long-range product line manages and safeguard, breakdown is diagnosed and automatic rehabilitate function. Workshop intelligence makes administrative system (Manufacturing Execution System, abbreviation MES) is the United States is in what 20 centuries put forward at the beginning of 90 time, aim to strengthen the executive function of MRP plan, plan MRP to be controlled with workshop exercise spot, through implementing a system connection rises. The spot control here includes PLC program controller, data to collect implement, form code, all sorts of metric reach testing instrument and manipulator to wait. MES system installed necessary interface, build cooperation with the firm that provides manufacturing site to control establishment. MES achieves the whole production process that the product completes to undertake optimizing administrative to falling from order, make in time to factory incident answer, report, dog reach processing, make to be being answered of manufacturing condition quickly MES can optimize technological process, improve administrative efficiency, the production of effectively directive factory runs a course. MES is the ligament with enterprise CIMS compositive information, it is implementation the; of basic technology measure that workshop production changes adroitly is close will 10 years develop quickly in the world, the manufacturing management technique that faces workshop layer and system of real time information. MES can provide a quick response, bouncy, manufacturing industry environment that changes subtly for the user, cost of help business cut, deliver the goods on schedule, improve product quality. CNC Milling