quantity directly.The modern design method is a design establish the product directly on the computer of three the model of ,According to the product three models proceed the molding tool construction the design and excellent turn the design,Design according to the molding tool construction again three models proceed to process to weave the distance and establishment crafts plan.This kind of method makes product model design, molding tool construction design, process to weave distance and technological designs regard a data as the foundation, realizing the data share,Can not only increases to design the efficiency quickly, but also can guarantee the quantity, decline low cost. a product model has three kinds of:Making use of the CAD system software proceeds the product model the design and make use of the real object measures fast anti in proceeding beg to set up the mold and make use of the standard format document of the other the system of CAD.Source method that aim at these three kinds of products model,Have studied every kind of technique now to the design efficiency that increases product model with quantity.The underneath further analyzes every kind of technical content with the characteristics.Making use of the CAD system software proceeds the product model design,Its technique includes primarily twos are several why the sketch draws, two the parameter ofs turn the design of the sketch, three entity shape design, three characteristic shape design, three the parameter ofs turn the entity shape the design, three curved face shape
design, free shape in space design, the external appearance of the product exaggerates, product of dynamic advertise to design the etc..These softwareses contain many typical representatives.Two the software ofs have:ME10, CADKEY, AUTOCAD, DHCAD, Genis, etc. of Sigraph; three the software ofs have:UGII, PRO/ E, IDEAS, CATIA, etc. of EUCLID; free shape in product and advertise the software of the design have:Alias, etc. of CDRS.Twos are several why the sketch draws is to make use of the flat surface CAD software draw the spare parts sketch, then replace the handicraft painting with the calculator; but two the parameter ofs turn,Then the calculator realizes the sketch changes the deal designs, making modification more convenient; three shape designs is a true shape that the product that the arithmetic figure turn design, it expressed completely product,Can be further to designs for the molding tool, analysis with processes the mathematics model of the necessity of offering; the free shape in space design is the art of the product shape to design, making product been not only is a function product, but also art article;It is every kind of need that the external appearance of the product exaggerate that product of the result designs, making product more beautiful, the color can attract people more; the dynamic advertisement design of the product is a result that design to make to promote the advertisement directly the product,Proceed the market expansion. It is an important technique that product imitate the type foundation go forward
a line of the product modification designs.Its basic principle is to passes three coordinateses measure the machine, laser measure machine or electronicses copy the few ò? to proceed to scan the diagraph to the real object,The data of large quantity that arithmetic figure turn that gets to measures the acquisition orders anti that send into the high class CAD software beg mold piece or appropriative anti beg the software inside, anti beg the software can read directly a data cluster,Combining can proceed the editor, filter, tidy up, beg the to a data cluster, row preface, part modification and reorganization, then automatic born curved face,It is end to acquire together the real object precision is consistent of or computer ?ü a product model that pass through reforms.This way can increases biggest new product design velocity.Current mature curved face anti beg to set up the mold software has: Surfacer,The CAD technique exchanges of the molding tool business enterprise with cooperate to have many pass the CAD document method proceed.Because the CAD system category is more, therefore documentary format must follow the international standard,Such as the DXF, IGES, STEP, VDA, etc. of STL.Pass to read standard format document to establish directly or establish the product model after modifying, since can quickly, deepen the customer and the exchanges of the molding tool factory house,Also can shorten the product the design the period.
3, the CAD design of the molding tool and analysis
The CAD design of the molding tool, analysis,Include to divide the type, certain type according to the product model molding tool of proceeding the design with the type D? , molding tool structural and detailed design, the plastics 3? fills process analysis etc. a few aspects.Make use of the advanced characteristic shape software,such as PRO/ E, etc. of UGII, the very easily certain dividing the type,Born top and bottom mold with mold D? , then the proceeding flows a way, sprinkle a people and cool off the pipe line of arrange etc..Made sure these designses data hereafter, then make use of the molding tool analysis software, Proceed such as the MOLDFLOW, CFLOW the plastics take shape the process nalysis.According to the software of MOLDFOLW with it of the material, craft database of plentifulness, pass the importation take shape the craft parameter,Can the development imitate the true analysis plastics to inject in note ?ü mold the process flows the circumstance the plastics with sprinkle a people more inject remits to flow the analysis of , analyze the temperature pressure variety circumstance and analyze to note ?ü a 2D remaining should dint etc.,According to analyze the circumstance to the rationality that check the molding tool construction, flow quantity problem etc. of the rationality, product of the appearance.For example whether the esse sprinkles to note the system not reasonable, appear to flow way with sprinkle a position size not appropriate,Can''t equilibrium alive with type ; whether to exsit product
construction absurdity or molding tool constructions or not is not reasonable, appearing the product 3? dissatisfied namely short shoot the phenomenon; whether to cool off asymmetry or not, the influence produces the efficiency with product quantity;Whether the esse notes the craft of ?ü wrong, appear the song of ?ì of the product transform etc..The molding tool passes the CAD the design with analyze, can dissolve mistake at design the stage, increase to try once the mold the success the rate.At plastics molding tool design with analyze to apply many new computer-aideds technique this stage, if the parameter turns technique, haracteristic shape technique, database technique etc..There is many standards piece in the plastics molding tool,Turn such as the standard mold a parameter for outing organization, sprinkling noting system, cooling systemetc. can adopting basing on database managing the characteristic shape design method proceed the design or establish the standard a ?a , like this since can realize the data share,Can satisfy the customer again to the at any time modifying of the design, make the design analysis of the molding tool fast, accurate, fficiently.The parameter turns the characteristic shape can not only describe the product completely then several why sketch information,And can acquire accuracy, material and assemble etc. informations of the product, its a product for establishing model is a kind of apting to handle and can reflect design intention with process the model of the characteristic.Therefore,The
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