1、 Die CAD / CAE's basic concept
CAD: (Computer Aided Design) is the use of computer hardware and software systems supporting the people of product or project design, graphics, engineering analysis and design of technical documentation and other activities collectively, is a comprehensive technology.
CAE: (Computer Aided Engineering) is computer-aided engineering, mechanical calculation is based on modern, computer simulation as a means of engineering analysis technology, is optimized to achieve the main support die module. For die CAE speaking, the present limited to the numerical simulation, die in the future the work of state and conduct mock operation, early detection of design flaws.
2、CAD / CAE technology development process 3
2.1 CAD technology development (1) 50 in the late 20th century to the early 1970s, this stage of the initial stage - wire-frame modeling technology. (2) the early 1970s to the early 1980s, this stage is the first CAD technology revolution - surface (surface) modeling technology. (3) the early 1980s to the mid-1980s, this is the second stage of CAD technology revolution - solid modeling stage. (4) the mid-1980s to the early 1990s, this stage is the third time CAD technology revolution - Parametric Technology. Parametric design using geometric constraints, engineering equation and relations between the product model to define the shape of features, which is part of the characteristics of the various constraints imposed various forms so as to meet the design in the shape of a group or have similar functions of the design Programme. At present the geometric constraints to deal with the type of product is basically the geometric shape public entities that relations between the size and dimensions of relations between the project, the parameters of technology, also known as the geometric dimensions drive technology. 20 since the early 1990s, this stage is the fourth time CAD technology revolution - variable technology. Variable design (Variational Design) is bound by solving a set of equations to determine the size and shape of products. Constraint equations can be geometric, it can also be a condition of calculation. Bound by the results of the modified driven by the constraint equations. Variables technology while maintaining the original parameters of the advantages (such as feature-based, full-size constraints, all data related to the size of drive to amend the design, etc.), but also to overcome its many disadvantages (such as surface entities to solve problems ). Variable application of technology representative of the software is SDRC / I-DEAS.
3、 CAE technology development process
(1) in the 20th century, 60 to 70 years in the exploration stage, finite element analysis for major technical issues of development, to address the aviation and aerospace technology development encountered in the process of structural strength, stiffness and simulation experiments and analysis. (2) the 20th century is 70 to 80 in the period of vigorous development of CAE, a large number of machinery software, soft-focused on the development of accuracy, speed and hardware platform for the match, the effective use of computer memory and disk space on the use of And finite element analysis of market structure and technology in the field of access to a lot of success. (3) 20 CAE technology in the 1990s gradually mature growth, the development of software to the CAD software interface and enhanced software for the home before and after handling capacity of direction.
Currently, CAE software system is a feature common with the integrated use of CAD software, that is, using CAD software components to complete assembly of parts or design, automatically generate finite element mesh and computing or structural dynamics, such as kinematics In the calculation, if the calculation of the results do not meet design requirements, revise modeling and calculation, to meet demand until the date, thus greatly enhancing the design and efficiency.
4、CAD / CAE technology development trends
In recent years the software developers around the world has invested enormous human and material resources, for the characteristics of various molds, a common CAD / CAM system of industry-specific mold for the system, and achieved great results. Have been put into use in the United States UGS's Progressive Die Design System NX-PDW, plastic injection mould design system Mold Wizard, Israel Cimatron's mold design and manufacturing system Quick, the United Kingdom DELCAM company's plastic mould design and manufacturing systems PS-Moldmaker , France Misslel software company's software for Injection Mould and Top Mold Progressive Die special software Top Progress, Japan UNISYS Corporation plastic mould design and manufacturing systems, such as CADCEUS. The technical characteristics of such software is in the unified system environment, the use of a unified database, to complete the design of a particular mold. NX-PDW initial realization of the mold parts of the structure of association, CADCEUS the characteristics of 2D and 3D design view of the linkage, PS-Moldmaker to the processing of information automatically package, these features make the software more pleasant.
At present, some software developers have been able according to the actual production process of functional products, in the network system under CAD / CAE / CAM integration, to solve the traditional hybrid CAD / CAM system can not meet the actual production process collaboration division of the requirements . DELCAM companies such as the United Kingdom in the original software DUCT5 on the basis of the latest software to adapt to the development of industrial production and the actual launch of the CAD / CAM integrated system Delcam's Power Solution, the system covers the geometric modeling, reverse engineering, industrial design, engineering Mapping, simulation, rapid prototyping, data programming, measurement and analysis and other fields. System of each module can operate independently, but also through the data interface compatible with other systems, and to require the use of the combination, in order to develop specialized CAD / CAE / CAM system, to open, compatibility And the unity of specialization. It can be expected, Die CAD / CAE / CAM system in the next few years will be gradually developed to support the design, analysis, management of the entire process of processing the product of the integrated management information system.
At this stage, die design and manufacture a large extent, still rely on the experience of the workers die alone computer numerical functions such as mold to complete the design of choice, process parameters and optimize the structure of the mold, molding defects in the diagnosis and die Forming the evaluation of performance is unrealistic. Mold a new generation of CAD / CAE / CAM system is using KBE (Knowledge-based engineering) technology for the transformation completely. UG-II as provided in the artificial intelligence module KF (Knowledge Fusion). KF use of knowledge can be designed into systems for pattern recognition and reasoning.
Numerical computation and artificial intelligence technology will be the combination for quite a long time, a very arduous and important task. Traditional simulation software are basically passive calculation tools, before the needs of users in advance of forming the design parameters of the programme and the identification process, the results are often difficult to directly used to guide production, in large measure the impact of simulation software and the promotion of universal,
Plastic injection mould CAD / CAE / CAM Development of
Plastic injection mould CAD / CAM is accompanied by a common mechanical CAD / CAM technology development and constantly deepening. From the 1960s on wire-frame model of the CAD system, to the 1970s to surface modeling as the core of the CAD / CAM system, 80 of the entity modeling the successful application of the 1990s, based on the characteristics of the parameters of the entities / surface modeling technology Perfect, plastic injection mould used for CAD / CAE / CAM technology to provide a reliable guarantee. At present overseas markets have emerged in a number of successful application of plastic injection mould of CAD / CAE / CAM system.
Now the commercialization of some well-known three-dimensional modeling software have a separate injection mould design modules, such as the United States PTC's Pro / E, UGS's UG-II, SDRC's I-DEAS system. The three CAD / CAM system is currently in the plastic mold industry in the most widely used. There is also the U.S. CV's CADDS system, France MATRA's EUCLID, France DASSAULT company's CATIA, the British company's DUCT DELCAM system, the Japanese shipbuilding Information Systems Inc. of Space-E system, and Japan UNISYS Corporation CADCEUS system And so unique, have their own user base.
CAE plastic injection mould the development of technology is also very rapidly, from the 1960s and the one-dimensional flow to the cooling of the two-dimensional movement of the 1970s and 1990s and then to the cooling of the quasi-three-dimensional flow and cooling analysis, the scope of its application has been extended To the packing of fiber orientation and warping elements in areas such as forecasts and the effectiveness of Chaplin.
Plastic injection molding CAE commercialization of software applications in the most extensive when the number of U.S. companies Moldflow simulation software MF, the main flow simulation software (MF / FLOW), cooling analysis (MF / COOL), warpage analysis (MF / WARP) , Gas-assisted analysis (MF / GAS) and stress analysis (MF / STRESS), and so on. The company was launched in 1998-the double-sided flow of 3D software (Part Adviser), 2002 launch of the true three-dimensional entities flow software modules.
CAD: (Computer Aided Design) is the use of computer hardware and software systems supporting the people of product or project design, graphics, engineering analysis and design of technical documentation and other activities collectively, is a comprehensive technology.
CAE: (Computer Aided Engineering) is computer-aided engineering, mechanical calculation is based on modern, computer simulation as a means of engineering analysis technology, is optimized to achieve the main support die module. For die CAE speaking, the present limited to the numerical simulation, die in the future the work of state and conduct mock operation, early detection of design flaws.
2、CAD / CAE technology development process 3
2.1 CAD technology development (1) 50 in the late 20th century to the early 1970s, this stage of the initial stage - wire-frame modeling technology. (2) the early 1970s to the early 1980s, this stage is the first CAD technology revolution - surface (surface) modeling technology. (3) the early 1980s to the mid-1980s, this is the second stage of CAD technology revolution - solid modeling stage. (4) the mid-1980s to the early 1990s, this stage is the third time CAD technology revolution - Parametric Technology. Parametric design using geometric constraints, engineering equation and relations between the product model to define the shape of features, which is part of the characteristics of the various constraints imposed various forms so as to meet the design in the shape of a group or have similar functions of the design Programme. At present the geometric constraints to deal with the type of product is basically the geometric shape public entities that relations between the size and dimensions of relations between the project, the parameters of technology, also known as the geometric dimensions drive technology. 20 since the early 1990s, this stage is the fourth time CAD technology revolution - variable technology. Variable design (Variational Design) is bound by solving a set of equations to determine the size and shape of products. Constraint equations can be geometric, it can also be a condition of calculation. Bound by the results of the modified driven by the constraint equations. Variables technology while maintaining the original parameters of the advantages (such as feature-based, full-size constraints, all data related to the size of drive to amend the design, etc.), but also to overcome its many disadvantages (such as surface entities to solve problems ). Variable application of technology representative of the software is SDRC / I-DEAS.
3、 CAE technology development process
(1) in the 20th century, 60 to 70 years in the exploration stage, finite element analysis for major technical issues of development, to address the aviation and aerospace technology development encountered in the process of structural strength, stiffness and simulation experiments and analysis. (2) the 20th century is 70 to 80 in the period of vigorous development of CAE, a large number of machinery software, soft-focused on the development of accuracy, speed and hardware platform for the match, the effective use of computer memory and disk space on the use of And finite element analysis of market structure and technology in the field of access to a lot of success. (3) 20 CAE technology in the 1990s gradually mature growth, the development of software to the CAD software interface and enhanced software for the home before and after handling capacity of direction.
Currently, CAE software system is a feature common with the integrated use of CAD software, that is, using CAD software components to complete assembly of parts or design, automatically generate finite element mesh and computing or structural dynamics, such as kinematics In the calculation, if the calculation of the results do not meet design requirements, revise modeling and calculation, to meet demand until the date, thus greatly enhancing the design and efficiency.
4、CAD / CAE technology development trends
In recent years the software developers around the world has invested enormous human and material resources, for the characteristics of various molds, a common CAD / CAM system of industry-specific mold for the system, and achieved great results. Have been put into use in the United States UGS's Progressive Die Design System NX-PDW, plastic injection mould design system Mold Wizard, Israel Cimatron's mold design and manufacturing system Quick, the United Kingdom DELCAM company's plastic mould design and manufacturing systems PS-Moldmaker , France Misslel software company's software for Injection Mould and Top Mold Progressive Die special software Top Progress, Japan UNISYS Corporation plastic mould design and manufacturing systems, such as CADCEUS. The technical characteristics of such software is in the unified system environment, the use of a unified database, to complete the design of a particular mold. NX-PDW initial realization of the mold parts of the structure of association, CADCEUS the characteristics of 2D and 3D design view of the linkage, PS-Moldmaker to the processing of information automatically package, these features make the software more pleasant.
At present, some software developers have been able according to the actual production process of functional products, in the network system under CAD / CAE / CAM integration, to solve the traditional hybrid CAD / CAM system can not meet the actual production process collaboration division of the requirements . DELCAM companies such as the United Kingdom in the original software DUCT5 on the basis of the latest software to adapt to the development of industrial production and the actual launch of the CAD / CAM integrated system Delcam's Power Solution, the system covers the geometric modeling, reverse engineering, industrial design, engineering Mapping, simulation, rapid prototyping, data programming, measurement and analysis and other fields. System of each module can operate independently, but also through the data interface compatible with other systems, and to require the use of the combination, in order to develop specialized CAD / CAE / CAM system, to open, compatibility And the unity of specialization. It can be expected, Die CAD / CAE / CAM system in the next few years will be gradually developed to support the design, analysis, management of the entire process of processing the product of the integrated management information system.
At this stage, die design and manufacture a large extent, still rely on the experience of the workers die alone computer numerical functions such as mold to complete the design of choice, process parameters and optimize the structure of the mold, molding defects in the diagnosis and die Forming the evaluation of performance is unrealistic. Mold a new generation of CAD / CAE / CAM system is using KBE (Knowledge-based engineering) technology for the transformation completely. UG-II as provided in the artificial intelligence module KF (Knowledge Fusion). KF use of knowledge can be designed into systems for pattern recognition and reasoning.
Numerical computation and artificial intelligence technology will be the combination for quite a long time, a very arduous and important task. Traditional simulation software are basically passive calculation tools, before the needs of users in advance of forming the design parameters of the programme and the identification process, the results are often difficult to directly used to guide production, in large measure the impact of simulation software and the promotion of universal,
Plastic injection mould CAD / CAE / CAM Development of
Plastic injection mould CAD / CAM is accompanied by a common mechanical CAD / CAM technology development and constantly deepening. From the 1960s on wire-frame model of the CAD system, to the 1970s to surface modeling as the core of the CAD / CAM system, 80 of the entity modeling the successful application of the 1990s, based on the characteristics of the parameters of the entities / surface modeling technology Perfect, plastic injection mould used for CAD / CAE / CAM technology to provide a reliable guarantee. At present overseas markets have emerged in a number of successful application of plastic injection mould of CAD / CAE / CAM system.
Now the commercialization of some well-known three-dimensional modeling software have a separate injection mould design modules, such as the United States PTC's Pro / E, UGS's UG-II, SDRC's I-DEAS system. The three CAD / CAM system is currently in the plastic mold industry in the most widely used. There is also the U.S. CV's CADDS system, France MATRA's EUCLID, France DASSAULT company's CATIA, the British company's DUCT DELCAM system, the Japanese shipbuilding Information Systems Inc. of Space-E system, and Japan UNISYS Corporation CADCEUS system And so unique, have their own user base.
CAE plastic injection mould the development of technology is also very rapidly, from the 1960s and the one-dimensional flow to the cooling of the two-dimensional movement of the 1970s and 1990s and then to the cooling of the quasi-three-dimensional flow and cooling analysis, the scope of its application has been extended To the packing of fiber orientation and warping elements in areas such as forecasts and the effectiveness of Chaplin.
Plastic injection molding CAE commercialization of software applications in the most extensive when the number of U.S. companies Moldflow simulation software MF, the main flow simulation software (MF / FLOW), cooling analysis (MF / COOL), warpage analysis (MF / WARP) , Gas-assisted analysis (MF / GAS) and stress analysis (MF / STRESS), and so on. The company was launched in 1998-the double-sided flow of 3D software (Part Adviser), 2002 launch of the true three-dimensional entities flow software modules.
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