Tài liệu Core and cavity design

Core and Cavity Design Version 5 Release 11 Core and Cavity Design Site Map Preface Using this Guide What's New Getting Started Importing the Molded Part Defining the Main Pulling Direction Defining a Direction for the Slider Transferring faces to the slider Basic Tasks Importing a Part Defining the Main Pulling Direction Pulling Direction for Sliders Transferring Elements Splitting a Face Aggregating Surfaces Sectioning Surface Boundaries Workbench Description Menu Bar Description Tool Bar Description Annotations Import Part Pulling Direction Parting Line Parting Surface Page 1 Core and Cavity Design Wireframe Operations Advanced Replication Tools Specifications Tree Glossary Index Version 5 Release 11 Page 2 Version 5 Release 11 Core and Cavity Design Page 3 Preface Core and Cavity Design defines the core and cavity sides of a part, including any sliders or loose cores that may be required, so as to produce a MoldedPart ready to be used with Mold Tooling Design. It includes functions that define: The pulling directions, the parting line the parting surface, the splitting surface, along with analysis and fine tuning capacities. Using this Guide Core and Cavity Design Version 5 Release 11 Page 4 Using this Guide Prior to reading the Mold Tooling Design user's guide, you are recommended to have a look at the Infrastructure User's Guide for information on the generic capabilities common to all products. Version 5 Release 11 Core and Cavity Design Page 5 What's New? New Functionalities Display functions You can now choose to display the boundaries of surfaces by a click in the associated icon. Sectioning Aggregate Aggregates the surfaces contained by an OpenBody into one or several surfaces. Enhanced Functionalities Defines pulling direction: several functionalities have been added to improve productivity The action generates no longer Joins, but Surfaces, visible in the specification tree, resulting in higher performances in the action itself and in the actions "Defines slider lifter direction", "Transfer an element" and "Split Mold Area". An exploded view of the core and cavity areas is available. Faces can be transferred from one area to another. Cast shadows can be taken into account for a better definition of the areas. The definition of the core and the cavity areas can be inverted. A Cancel button is available in the progress bar that indicates the advancement of the computation. Defines sliders pulling direction: several functionalities have been added to improve productivity The action generates no longer Joins, but Surfaces, visible in the specification tree, resulting in higher performances in the action itself and in the actions "Defines pulling direction", "Transfer an element"and "Split Mold Area". An exploded view of the core and cavity areas is available. Faces can be transferred from one area to another. The definition of the core and the cavity areas can be inverted. A Cancel button is available in the progress bar that indicates the advancement of the computation. Transfer an element The action removes the faces transferred from the initial surface and creates a surface for all the faces transferred in the destination OpenBody. A progress bar indicates the advancement of the transfer. Core and Cavity Design Version 5 Release 11 Split Mold Area It generates splits computed in Datum mode. Shape fillet A tritangent fillet option as been added. Page 6 Core and Cavity Design Version 5 Release 11 Page 7 Getting Started This is a short tutorial that will help guide you through the key functionalities in the Core & Cavity workbench. You will learn how to take a part and define its core, cavity and slider surfaces. The tutorial should not take you more than 15 minutes to complete. Importing the Molded Part Defining the Main Pulling Direction Defining a Direction for the Slider Transferring faces to the slider Core and Cavity Design Version 5 Release 11 Page 8 Importing the Molded Part This task shows you how to enter the Core & Cavity Design workbench and how to import a part to use there. Ensure that you have a product (and not a part) in the viewer. 1.Start the application with Start > Mechanical Design > Core & Cavity Design. 2.Click the Import Model icon and import GettingStarted.CATPart from the samples directory. Click the Affinity Shrinkage icon. Core and Cavity Design 3.Press OK. Version 5 Release 11 Page 9 Core and Cavity Design Version 5 Release 11 Page 10 Defining the Main Pulling Direction This task teaches you how to define the main pulling direction which, in turn, defines the core and cavity surfaces. 1.Click the Defines pulling direction icon . 2..Once the dialog box is open, click the part in the viewer. Core and Cavity Design Version 5 Release 11 Page 11 The surface that you see is green because it corresponds to the cavity surface. Turn the part over and you will see the core surface in red: However, as you turn the part round you will notice that there is an area that is neither red (core) nor green (cavity). This area will require another pulling direction for the slider that will be needed to ensure that the part can be correctly unmolded. Core and Cavity Design Version 5 Release 11 3.Press OK to create the core and the cavity sides. You are now going to define the slider pulling direction. Page 12 Core and Cavity Design Page 13 Version 5 Release 11 Defining a Direction for the Slider This task shows you how to define a pulling direction for a surface that is a slider or a loose core. 1.Click the Defines slider lifter direction icon . 2.Drag the compass into the middle of the hole in the blue face so as to define the pulling axis for the slider like this: Core and Cavity Design Version 5 Release 11 Page 14 You could also enter the coordinates for the direction in the dialog box like this: Core and Cavity Design 3.Click on the blue face. The blue face turns green. 4.Press OK. The face now turns yellow: Version 5 Release 11 Page 15 Core and Cavity Design Version 5 Release 11 We are now going to deal with the round hole in the part. Page 16 Core and Cavity Design Version 5 Release 11 Page 17 Transferring Faces to the Slider You are now going to see how to transfer the faces on the inside of the hole to the slider. 1.Expand the tree. Hide the core, the cavity and the slider by selecting them, one at a time, in the tree and using the Hide/Show option in the contextual menu. 2.Click the Transfer Element icon . 3.Choose Slider/Lifter.1 as the destination. 4.Select the faces that are displayed. Core and Cavity Design Version 5 Release 11 Page 18 5.Press OK. The selected faces are transferred to the slider/lifter, and as the slider is hidden, the faces vanish from the screen. Core and Cavity Design Version 5 Release 11 Basic Tasks Importing a Part Defining the Main Pulling Direction Pulling Direction for Sliders Transferring Elements Splitting a Face Aggregating Surfaces Sectioning Surface Boundaries Page 19 Core and Cavity Design Version 5 Release 11 Page 20 Importing a Part This task shows you how to open the workbench and to import a part. You can also use scaling and affinity functions to take account of shrinkage. There is also an explanation of the parameters in the dialog box. Ensure that you have a product (and not a part) in the viewer. 1. Open the workbench via Start > Mechanical Design > Core & Cavity Design.