Aviation aluminium alloy of 10 thousand tons of class board tensional drawing machine

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The national science and technology that by China joint-stock company of heavy-duty and mechanical academy develops weighs big special task " aviation aluminium alloy of 10 thousand tons of class board tensional drawing machine " , already was in in November 2011 Chongqing southwest aluminous course of study (group) put into production of limited company complete. Aviation aluminium alloy of 10 thousand tons of class board tensional drawing machine basically machines company place to use for large aluminium, think aerospace, war industry, traffic is carried and shipping is made wait for an industry to offer high quality beforehand drawing is clement makings of aluminium alloy plank, service product includes: The airframe of large transport, helicopter and air bus and wing, and ship vessel board. This aluminium alloy board the tensile force of the biggest design of tensional drawing machine is 120MN, it is current home the first, also be opportunity of the Asia's greatest drawing of aluminium alloy plank. As use the first at our country to have international advanced level can specialization aviation aluminium alloy of production is thick board the crucial equipment in product line, tonnage of the limiting load of this drawing machine, big drawing falls to take protection and the multinomial function index such as moving precision to all be achieved international is at present banner level. Current, outside the drawing machine that except American aluminium estate company amounts to factory of article baud rolling to have 136MN, the chance of drawing of aluminium alloy plank that 10 thousand tons of above still obtain without real tensile force on international receives application of put into production. The development of this drawing machine is successful, fill domestic aluminium alloy is thick board reach especially thick board the blank of drawing machine, for our country aviation " big airlines " the raw material of project and national defence war industry is supplied provided strong safeguard. Aviation aluminium alloy of 10 thousand tons of class board the main advantage of machine of drawing of tensional drawing machine and performance data this aviation aluminium alloy of 10 thousand tons of class board tensional drawing machines and tools has the following and significant advantage: Multiple break take passive amortize to protect a function, can prevent the damage that the workpiece in drawing process ruptures suddenly and causes to equipment effectively; Enough frame tigidity and reasonable gate beforehand clamp system, the even clamp that can realize plank reachs homogeneous deformation; Can measure automatically by the initiative length of drawing plank, with the outspread rate precision of accurate control board; The real time that has manufacturing data is collected, show with memory function, can realize man-machine interface to be able to inspect an input; Can show and the tensile force in memory drawing process, and curve of drawing rate trends; From aluminium board on expect drawing ends, the whole drawing process of aircrew undertakes programme controll by PLC entirely. This aviation aluminium alloy of 10 thousand tons of class board the basic performance data of tensional drawing machine is: But drawing the aluminium alloy plank of 7 departments of 2 ～ , tensile force of the biggest design amounts to 120MN, but drawing board is the 4000mm of the biggest width, biggest ply 250mm and 30000mm of the biggest length, gate opens degree of 300mm, 63kN/mm of gate load coefficient, full negative charge is the smallest plank width 1900mm, 6mm/s of speed of the biggest drawing, stepless is adjustable. The equipment composition of drawing machine and function this aviation aluminium alloy of 10 thousand tons of class board equipment composition includes machinery of tensional drawing aircraft: Mobile collet, fixed collet, advocate assembly of the drawing crock device, frame that press bridge and amortize restoration system, orbit and auxiliary bear put material equipment to wait. Electrical system includes: All of transmission control system, PLC control system, computer science department and testing system. Hydraulic pressure system includes: Have servo pilot advocate drawing system, mobile head and system of fixed head hydraulic pressure. 1.

Unit of airplane of drawing of drawing airplane unit uses complete float design, solved produce drawing to break the problem that huge impact creates attaint to the foundation when makings. Drawing is broken when makings, whole set equipment can produce certain displacement along orbit, break the aircrew after makings to issue rapid restoration in the action of amortize restoration device. Mobile collet and the clamp that secure collet to be used at drawing plank and fixed, function of the drawing that finish. Collet combines system of component of bridge type frame, gate, synchronous clamp and wheel to bear the weight of by prestressing force respectively the composition such as device. Lead plane of drawing aircraft nose is worn to set frame of bridge type prestressing force, the airframe in reducing drawing process effectively thereby is out of shape, assured the dependability of the even clamp of aluminium board and clamp. In the meantime, gate load coefficient (unit width tensile force) bigger, satisfied especially thick board drawing demand. Synchronous beforehand clamp system uses clamp means 2 times, in make sure gate position is synchronous while, of every groups of gate beforehand clamping force is consistent, make gate right thereby the clamp of aluminium board is even, assured the homogeneous deformation of plank effectively. Gate clamp system sets pressure sensor, can undertake monitoring to gate clamping force. Mobile collet and the front that secure collet contain aluminium board to be opposite buy of traditional Chinese clothes, in can realizing the left and right sides of aluminium board, fluctuation to be opposite. All undertake detecting by positional sensor to medium adjustment, realized width to decide position control function automatically. Advocate drawing crock is used at providing power for plank drawing. Installation is in compress two between column and mobile collet advocate drawing crock, it is crock of a kind of muti_function assorted hydraulic pressure, have drawing drive, shift to collet moves and be broken take the multiple function such as amortize damping. The assembly that press bridge includes: Two side are compressed column and the pedestal that press bridge. Two side compress column to be propped up by a group of pedestal each, distributing along length direction the plug opening that has equidistance, in order to secures collet. Compress column to be able to move relative to pedestal along drawing direction, when assuring to take, do not damage pedestal foundation. Pedestal makes the same score direction and perpendicular direction to go up to have spacing function to pressing Liang Jun in water, increased to press the stability when Liang Shouli. The one aspect of the matter that press bridge and advocate join of lever of piston of crock of the operation inside drawing crock, another end relies on amortize restoration to device is propped up and locate. Amortize restoration system installs the tail end that reduces post in frame, its function is the collet after amortize breaks belt hind and the impact that control bridge, be in after taking impact, make frame presses bridge restoration. Amortize restoration device is the main component that this drawing act on one's own judgment in an emergency brings amortize to protect. 2.

System of control of hydraulic pressure of system of hydraulic pressure control is main by advocate system of drawing hydraulic pressure, fixed end hydraulic pressure system and activity carry composition of hydraulic pressure system. Among them, advocate system of drawing hydraulic pressure used servo to control system and multinomial innovation technology, use at controlling two side advocate synchronism of drawing crock high accuracy moves, made sure mobile collet moves smoothly in drawing process, realized the even drawing of plank. Secure system of upright hydraulic pressure and activity to carry hydraulic pressure system to be used at the hydraulic pressure actuator such as the gate on drive nose. Two systems all use scale servo to control a system, can be adjusted conveniently on work station and control all sorts of parameter. 3.

Electric control and detect the system of whole and electric control of this drawing machine used supervisory system control of technology of set of PLC of distributing center type and technology of long-range communication network, through two class of machine of network general drawing for distribution, AC motor system of system of control, PLC, long-range I/O is mixed man-machine interface (HMI) couplet is an organic whole, and the interface between each system all is unified design, the integral automation that made drawing machine jointly controls a system. Electrical system includes: All of system of power supply system, transmission, automation system, computer science department and monitoring system. Main control function of the system includes: Drawing speed control, tensile force control, outspread rate control, synchro control and plank width and the control in be opposite highly. Main innovation technology and patent this aviation aluminium alloy of 10 thousand tons of class board the ground used creativity of tensional drawing machine multinomial new technology, include: Nose of drawing of combined-type prestressing force, solved the nose below large tensile force to be out of shape problem; The compound function that has amortize function advocate the innovation application of crock of drawing hydraulic pressure, solved the major problem of nose amortize; The innovation of set of drawing of complete float tension applies, solved break take the damage issue that pounds pair of equipment bases; System of compound cant clamp reachs gate 2 times beforehand clamp system, solved especially thick board clamp and wide board even clamp problem; Large flow, high pressure is electro-hydraulic servo controls a system, assured the moving precision of integral equipment. Debug reach use circumstance to be mixed by joint-stock company of academy of Chinese heavy machinery user unit -- southwest aluminium course of study (group) the combination that limited company comprises debugs a group, finished pair of aviation 2011 aluminium alloy of 10 thousand tons of class board of tensional drawing machine no load debug with bear test-drive, at present equipment already put into production is used. In debug and using a process, when this drawing machine endured 8500t tensile force stop the test of the belt suddenly, it is normal to break the equipment after the belt to move, without unusual attaint, proved drawing machine is multinomial break the effectiveness that brings amortize technology. After this, the actual negative charge of this drawing machine achieves 10500t, achieved the important assessment target of machine of drawing of 10 thousand tons of class. End at present, this drawing aircraft already moved more than one year normally, the aluminium alloy that production gave large quantities of amounts is thick board. CNC Milling