Design module according to Pro/E meal gold, what elaborated pair of makings below Ban gold with example is automatic spread out, spread out length to provide academic basis to Ban gold. The foreword flying development as the industry such as car, communication, increase with each passing day to the demand of meal gold structural member, be in in view of Pro/E home's relatively popular current situation, the article discussed the implementation course that is based on Pro/E technology to assist the makings below Ban gold. As a kind of commonly used structural member, ban gold spare parts is in the industry such as machinery of communication, electron, car, agriculture is having apply widely. Its are commonly used treatment form has bend, figuration, punch. The appearance after treatment and dimension precision interchangeability are better, can satisfy general assembly to reach use requirement. After be out of shape through plasticity, metallic interior organization is able to improve, mechanical intensity rises somewhat, have weight good, precision mixes light, stiffness high the characteristic with smooth and beautiful shell, with solder, the craft such as adhesive bonding cooperates, can make spare parts structure more hasten is reasonable, treatment is more convenient, it is the main method that makes complex form structural member. Although domestic most company has introduced CAD technology, but umbriferous to expecting computation still uses divide into equal parts mostly below Ban gold law, with traditional handiwork computational method photograph is compared, although the process simplifies somewhat, pledge actually and did not get fundamental change, just changed drawing board " electronic drawing board " . At present the three-dimensional CAD software such as the SolidWorks of industry popularity, Solid Edge, Pro/E all has Ban gold to design module, finish Ban gold OK and conveniently to design, get place to need next makings to develop a plan, improve design quality and efficiency. The article will be platform with Pro/E, carry a typical case, to its design process tries brief introduction. The design length of 1 Ban gold and exhibit gold of smooth length Ban to be in the process that tear open a turn, producing plasticity to change model the one Ban gold in inside of Ban gold neutral line is compressed, drawing of the side outside neutral line. The arc length that neutral line loses curved share namely and exhibit the circular arc with equal length of gold of the Ban after making the same score. Ban gold neutral line is not in certainly of material in the middle of, wait for many elements to concern with the angle that fold a turn with Ban gold material, ply however. The architect does not know when the design where the neutral line of Ban gold is, although know, want to consider these factors, also can bring extra workload to the design. After founding gold of a Ban that fold a turn, if the architect was opposite technically,the configuration file of Ban gold module undertakes installing, should extending smooth length is the length of according to the parameter with acquiescent Pro/E numerate. Ban gold architect does not pay close attention to the length after Ban Jin Ping commonly, care the design length of Ban gold only, (Design length points to the dimension of form of form of Ban Jin Zaicheng and appearance) . To Ban gold maker, to give Ban gold next material, the length after getting figuration Ban Jin Zhanping is crucial. Carry setting Ban gold " Bend Allow " (the license that fold a turn) can be in what Ban gold controls on the graph to extend smooth length. "Bend Allow" has the length after two kinds of means control Ban Jin Zhanping, the first kind is to install K factor to calculate extend smooth length, (Or Y factor, formulary conversion can be passed between Y factor and K factor, they are an invariable) of by the position of the neutral line that fold a turn decision; The 2nd kind is to pass a setting to change curved table (the parameter in Bendtable) will calculate extend smooth length. In machining a process actually, the character such as the attribute of material of gold of technologist basis Ban, ply installs Ban gold " Bend Allow " in parameter, reach thereby of Ban gold extend smooth length. But the parameter of these settings is experience value only, not certain as complete as actual condition correspondence. Normally the practice is; exhibits smooth length to fall according to Pro/E software calculative above all makings; Pass trial-produce next a few appearance, quantity sampling the difference between dimension, make the same score length to undertake correction to exhibiting again. 2 45 ° is inclined hand in ° of 3 1 45 tubal a group inclined hand in 3 canals structure to if pursue,pursue 1 is shown, this workpiece by the canal 1 with the canal 2 into 45 ° inclined hand in seam to form. Design stage is as follows: (1) builds Ban gold part, set pattern plate is " Mmns_part_sheetmetal " . (Menu is pulled below 2) choice " insert a person / thin plate extends item of expenditure / rotate " command, in draft of the scale on Top datum plane, set runner shaft coming back is Front, bilateral and symmetrical rotate, obligate mental allowance is 1 ° , affirmatory corner coming back is spent for 359 ° , set is corresponding material ply. If pursue,2 are shown. Graph 2 canals 1 draft is designed (3) chooses " insert a person / cutting / rotate " command, set draft datum plane is Front, if the graph is shown 3 times, scale draft, 45 ° fiducial axes is set runner shaft coming back, bilateral and symmetrical 360 ° rotate except makings. Graph 3 canals 1 interface draft is designed (4) chooses " insert a person / the operation that fold a turn / spread out " command, choose Ban gold to spread out fixed face to be in obligate juncture for 359 ° , after regulation spreads out whole face, can obtain a canal next makings of 1 develop a plan. If pursue,4 are shown. Graph 4 canals 1 makings develop a plan (5) Alexandrine place is narrated, be in charge of next 2 makings to if the graph is shown 5 times,develop a plan. In this exemple, use drawing cutting or bore order, all can achieve same result. Graph 5 canals 2 makings develop a plan the 3 length that spread out length to design Ban Jin Zhanping are to point to the length that should change material curved place to need by plane, computational formula is as follows: L=(0. × of T) of × of coefficient of R+Y of 5 π × (θ / in 90) type: L- Ban gold spreads out length;R- to fold θ of; of ply of material of;T- of the radius inside curved place - coefficient of;Y of the angle that fold a turn - the constant that decides by the central line that fold a turn, its acquiesce is worth for 0.
54 last words (1) is when solid Wu of Ban gold design, ban gold exhibits smooth computation formula is it is main basis with K coefficient, the limits of this coefficient is 0-1, in order to is in on behalf of material when folding a turn by the counteractive degree of drawing. The default that should rectify Pro/E to offer according to actual condition changes curved table, in order to achieve accurate result, among them π of Y coefficient =(/ coefficient of 2) × K. (2) obligate mental allowance (<360 ° ) should according to the spare parts real measure tries to decide. (3) is based on the unified database concept of Pro/E, use Top-down method to finish each Ban gold in assembling package assemble a design, make project technology personnel casts off the limitation of 2 dimension plane and trival design work thereby, improve the automation degree of the design and design quality. CNC Milling
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