New mold-design tools at AutoFact.This year's AutoFact Show, held in Detroit by the Society of Manufacturing Engineers The Society of Manufacturing Engineers  (SME) is dedicated to bringing people and information together to advance manufacturing knowledge. SME is internationally recognized by manufacturing practitioners, companies and other organizations as a source for information, , saw plenty of design software developments, including both new and improved packages for plastics molds. The show was also a forum for significant introductions of mold-filling simulation software Simulation software is based on the process of imitating a real phenomenon with a set of mathematical formulas. It is, essentially, a program that allows the user to observe an operation through simulation without actually running the program. from AC Technology of Louisville, Ky., and Cray Research See Cray. of Eagan, Minn. (see PT, Dec. '94, p. 9 for an initial report).
in full computer-aided design/computer-aided manufacturing.
Integration of design and manufacturing into a system under direct control of digital computers. FOR MOLD DESIGN
Pro/Engineer software from Parametric Technology Corp. of Waltham, Mass., has token on some new functionality of interest to mold designers. Among the 700 enhancements found in new Release 14 are more types of draft features added to the mold-design module. Roman Bukary, application engineer for the Pro/Moldesign module, explains that the previous version contained only regular and split draft features while the new version offers curve-driven and tangent tangent, in mathematics.
1 In geometry, the tangent to a circle or sphere is a straight line that intersects the circle or sphere in one and only one point. drafts as well.
Release 14 also features a new module, Pro/Legacy, for bringing existing CAD data into the Pro/Engineer environment. And it boasts an interface to STEP, a new international standard (ISO (1) See ISO speed.
(2) (International Organization for Standardization, Geneva, Switzerland, www.iso.ch) An organization that sets international standards, founded in 1946. The U.S. member body is ANSI. 10303) for exchanging product model data.
Matra Datavision of Trumbull, Conn., came out with Moldmaker, a stand-alone software package for mold design. Moldmaker includes feature-based solid and surface modeling, parametric mold-base libraries, and integrated drafting capabilities. At present, the object-oriented mold components library comprises parts catalogs from D-M-E, Hasco, and others. The system can also accommodate non-standard mold bases. According to according to
1. As stated or indicated by; on the authority of: according to historians.
2. In keeping with: according to instructions.
3. Matra marketing v.p. George LeBlanc, Mold-maker can automate previously time-consuming design tasks. For example, after users select the mold base and components, Mold-maker will create positioning holes subject to predefined tolerances from the library or from the user. The program also generates bills of materials automatically.
Matra also announced a mold tooling module for its Euclid 3 CAD/CAM/CAE software. Using existing Euclid 3 part models, the module either creates non-standard tooling components or delves Delves is a village in County Durham, in England. It is situated a short distance to the south of Consett. into the parts library for standard components.
In other CAD news, IBM/Dassault of White Plains, N.Y., demonstrated its new Version 4 Release 1.3 of Catia Solutions. Among its eight new enhancements are part-stress analysis for users who are not expert in finite-element analysis (FEA (Finite Element Analysis) A mathematical technique for analyzing stress, which breaks down a physical structure into substructures called "finite elements." The finite elements and their interrelationships are converted into equation form and solved mathematically. ), as well as an assembly fitting simulation and the ability to capture user-defined design rules in the system. This last product, known as Catia Knowledge Engineering, is an expert system that can embrace an organization's collective design knowledge.
Autodesk of Sausalito, Calif., showed off AutoCAD Release 13, which features enhancements that simplify the creation of drawings and 3-D models. Autodesk has also upgraded Auto-CAD Designer, its 3-D solid-modeling product. Most of the changes also revolve around Verb 1. revolve around - center upon; "Her entire attention centered on her children"; "Our day revolved around our work"
center, center on, concentrate on, focus on, revolve about ease-of-use features, including more documentation, an improved interface, and beefed-up feature/constraint editing.
3D Technology Inc. of Trumbull, Conn., brought out a Windows-based 3-D solids modeler called Visi-CAD Solids. It includes a mold-design module that automatically calculates sectional views and highlights any potential collisions between cooling lines. Visi-CAD uses the EDS (Electronic Data Systems, Plano, TX, www.eds.com) Founded in 1962 by H. Ross Perot (independent candidate for the President of the U.S. in 1992), EDS is the largest outsourcing and data processing services organization in the country. Unigraphics Para-solid Modeler and is priced at just under $4000.
NEW ANALYSIS TOOLS
Cray Research entered the flow-analysis arena in a big way with new supercomputer-based software that combines multiple melt-flow simulations with Design-of-Experiments (DOE) methodology. Called CMLogic 2.0, the software was developed in conjunction with General Motors, which has used CMLogic to simulate lost-core molding of the Cadillac Northstar engine intake manifold Noun 1. intake manifold - a manifold consisting of a pipe to carry fuel to each cylinder in an internal-combustion engine
fuel system - equipment in a motor vehicle or aircraft that delivers fuel to the engine .
To determine injection molding injection molding
A manufacturing process for forming objects, as of plastic or metal, by heating the molding material to a fluid state and injecting it into a mold. process capabilities and process windows for either existing or future molds, CMLogic software performs multiple Moldflow or C-Mold simulations in a DOE framework. (C-Mold software comes from AC Technology and Mold-flow is from Moldflow Inc., Shelton, Conn.) Each simulation reflects changes in key processing variables. These include cavity fill time, melt and mold temperatures, holding pressure and time, and mold-closed time. Varying these six process parameters according to DOE principles would require 45 simulation runs, explains Mike Obermier, Cray polymer processing specialist. He estimates that the supercomputer can often do all 45 simulations in about the same time as a computer workstation can do just one simulation.
Once CMLogic has run a "virtual DOE," its Molding Simulator lets users explore the results interactively in a way that may foster a better understanding of the multivariate The use of multiple variables in a forecasting model. relationships inherent in injection molding. For example, one screen has sliding button bars corresponding to the process parameters for a given job. Changing the setting on one of these bars will update all other affected parameters. This way, molders can run through several "what-if" scenarios to optimize process windows.
CMLogic licenses cost $18,000, not including the mold-filling analysis software. The software runs only on Cray's supercomputers, which cost $150,000 and up. But Cray will soon offer supercomputer time through service bureaus in North Carolina North Carolina, state in the SE United States. It is bordered by the Atlantic Ocean (E), South Carolina and Georgia (S), Tennessee (W), and Virginia (N). Facts and Figures
Area, 52,586 sq mi (136,198 sq km). Pop. and Minnesota. Prices for that service are expected to start at roughly $5000 on top of the software license.
Other plastics-related software developments included the release of a new C-Mold flow-analysis package from AC Technology. The new release features a whole new Motif-compliant interface for the program and a slew of accuracy-related improvements. Most notably, C-Mold has added a preliminary design tool called Rapid Designer. Its pulldown menus let users quickly select from 4500 polymers and 2500 molding machines, as well as from mold coolants and mold bases, which together yield a rough idea of processing characteristics before launching the full C-Mold analysis.
Moldflow Inc. has integrated its flow-analysis software into IBM/Dassault's Catia. Now users can generate the finite-element model, perform the analysis, and view the results from within the Catia CAD environment.
The company also ported its software to high-speed, "moderately parallel" Power Source computers from Silicon Graphics, Mountain View, Calif.