catia钣金设计教程PPT学习课件.ppt

Click to edit Master title style,Click to edit Master subtitle style,Second level,Third level,*,1,钣金设计,CATIA,培训教程,2,课程介绍,先修课程,:,Catia V5,基础,Catia V5,零件设计,Catia V5,装配设计,Catia V5,工程图设计,:,课程目的,本课程研究利用,CATIA V5,建立和编辑修改钣金特征和零件的方法。,学员对象,从事,Catia V5,钣金设计的用户,3,目錄,鈑金設計基礎,1,鈑金設計概述,工作臺介紹,:,使用者介面、術語、一般過程,2,鈑金參數3,鈑金壁板（,Walls,）,4,鈑金,彎曲,（,Bends),和凸緣,(Flanges),5,鈑金,沖孔（,Cut Outs,），平面陣列模式及特徵,6,生成,2D,鈑金展開視圖,7,修改鈑金零件,4,进入工作台,用户接口,术语,了解一般过程,介绍钣金设计工作台,钣金,设计概述,5,进入工作台,可以从,1-,开始菜单,2-,档菜单,3-,工作台工具,进入钣金设计工作台，建立一个包含几何元素的,Part Body,1-,2-,3-,6,文件扩展名,.,CATPart(,与普通零件设计相同,),钣金,设计工具,.,钣金,参数,零件树,标准工具栏,特征,.,钣金设计用户接口,:,进入草图器,.钣金,参数,7,I,nsert,菜单或工具栏,钣金设计用户接口,:,钣金,设计工具,扫掠壁板（,Walls,）,冲压（,Stampings,）,展开（,Unfold,）,钣金,工具,弯曲（,Bend,）,数组（,Patterns,）,增强复制（,Power Copy,）,8,术语,零件,由一个或多个壁板、弯曲和特征组成,参数,通常是指设计零件的壁板厚度、弯曲半径和起伏类型的值,起始壁板,用草图（轮廓）生成，可以是一个或一组拉伸壁板,特征,施加在零件上的形态，如：冲孔、数组和冲压等,9,General Process,From Assembly,create a new part,(Top-down approach),or,Create a new part,insert in assembly,(Bottom-up approach),Assign Material Parameters,Create different types of walls,Add,冲孔,and 3D Features,Add different types of,弯曲,Modify Wall Thickness and Wall Sizes,Creating a Flat View of the part,10,钣金,Parameters,In this lesson,you will see how to start a,钣金,part by assigning the basic parameter needed to create the part.,Defining,钣金,Parameters,11,Before starting to create any,钣金,part,define the,钣金,Parameters of the part.These are common characteristics that when defined will make creation easier and thus limit your need to supply data during creation of the part.,Defining Parameters,Parameters Tab,Bend Extremities Tab,12,Parameters are the common characteristic used in the creation of the part.They are as simple as stating the dimensional requirement of the material and bend radius,What are Parameters?,It is important to note here that only one set of parameters can be assigned in a CATPart,therefore you are limited to one part per document.,13,In order to start there are three basic parameters that need to be assigned:,Material Thickness,Bend Radius,Bend Relief Type,What Parameters need to be defined?,Bend Radius,Types of different Bend Reliefs,Square Relief,Minimum with,no relief,Round Relief,Linear,Tangent,Maximum,Material Thickness,Remember,the Bend Radius assigned here is the standard Bend Radius to be used on the part.This will be used to create all Bend Radii unless specified otherwise during the creation.,14,Defining Material Thickness,Select the,钣金,Parameter Icon,1,Activate the Parameters tab in the,钣金,Parameters window,2,With the Thickness field active,key in the new value,3,If the Material Thickness is all you are changing,select OK to end the modification,4,Create parts,15,Defining Material Bend Radius,Select the,钣金,Parameter Icon,1,Activate the Parameters Tab in the,钣金,Parameters window,2,Key in the new Bend Radius,Bend radii can be as small as,0.01 mm,.0 Radius is not available yet.,3,4,Select OK,Create parts,16,Selecting the Bend Relief Type,Select the,钣金,Parameter Icon,1,Select the Bend Extremities Tab in the,钣金,Parameters window,2,Select the type of Bend Relief displayed in the window,3,The relief with its dimensions are displayed,4,If the Bend Radius is all you are changing,select OK to end the modification,5,Where possible bend relief values,L1 and L2 can be modified to suit your special needs,Create parts,17,In this lesson,you will see how to start a,钣金,part and different ways to define walls,钣金,Walls,Defining Walls from Scratch,Defining Walls on Existing Parts,钣金,Walls recap exercise,18,You will learn how to create the 5 basic types of walls offered in the,钣金,workbench,Defining Walls from Scratch,Profile,wall,Wall on Edge,Extruded Wall,Rolled Wall,Pierced Wall,19,To start a,钣金,part,create some type of wall first to start from.It can be as little as one line that you can extrude a wall from or a complex profile to create many walls from or a profile to make an individual wall.,What are walls?,Be aware that where you select edges,top vs bottom will drive a different proposal for your wall.For example,a top selection may force your wall to go in an upward direction while a bottom selection may force your wall in a downward direction.,An example of how different ways could be used to create this part is as follows:,Wall 1 could have been created first as a flat profile wall and then walls 2,3,and 4 could have been done as walls on edge,Wall 1,2,and 3 could have been created with an extrude and then wall 4 could have been done as a wall on edge,1,2,3,4,20,The Profile wall is used to create a wall of a specific shape.Often used as a first wall of a part,When to use the various types of walls?,The Extruded walls are used to create a group of walls using a specific profile.Here it is used to build a simple“U”shaped chassis or a hat section used to strengthen other parts.,The Wall on Edge is used to create a wall on an edge of an existing wall.,You can also select an edge,click on the wall icon and draw the sketch you want,21,Profile Walls,Enter the Sketcher,on xy plane,and select the profile icon,Draw,the Sketch,Exit Sketcher,and select the profile Wall icon,Growth arrow defaults upward.If needed,invert button,3,1,2,4,Select OK to create the wall,5,Remember,the direction of growth effects how the wall will be modified if you change the Material thickness later,growth arrow,22,Profile Walls(with,冲孔,),Enter the Sketcher,on xy plane,and select the profile icon,Draw,the Sketch,Exit Sketcher,and select the profile Wall icon,Growth arrow defaults upward.If needed,invert button,3,1,2,4,Select OK to create the wall,5,Remember,the direction of growth effects how the wall will be modified if you change the Material thickness later,23,Walls on an Edge,Select the wall on edge icon,Select OK to create the wall,5,1,2,Key in the new values and select a dimension options,3,To reverse sketch profile direction,select this button,4,Select the edge to attach the wall too,6,Select the“With Bend”option to automatically create the bend,24,Walls on an Edge(with clearance),Note:the,reference wall is not impacted by the new wall,Select the wall on edge icon,Select OK to create the wall,1,2,Key in the new values and select a dimension options,3,Select the clearance option.The value is by default driven by bend radius,4,Select the edge to attach the wall to6,Select the“With Bend”option to automatically create the bend,5,25,Extruded Walls,Note:in the tree,each wall is created separately under the extrusion.No sketches for the walls are created;the sketch for the original profile is kept.,Key or select the,extrusion parameters.,Enter the Sketcher,on xy plane,and select the profile icon,Sketch the profile,1,2,Exit Sketcher,and select the,Extrusion wall icon,3,Select OK,4,5,The walls can be created on one or both sides of the sketch(,Second Limit).Also,the material thickness can be in either direction,or symmetrically around the profile,(symmetrical thickness checkbox),26,Isolate,Walls,MB3 on Extrusion or Edge Wall and select item object and Isolate,1,If an Extrusion,Select a wall,2,5 local axis,6 sketches and some coincidence constraints are automatically created for this extrusion.,Can be performed on:,extrusion walls,wall on edge,You cannot undo an,Isolate,action after having modified the wall.Isolating a Wall on Edge erases all updating data.,27,Rolled Walls,Enter the Sketcher,on xy plane,and select the profile icon,Draw,the Sketch,Exit Sketcher,and select the Extrude icon,Key or select the,extrusion parameters.,3,1,2,4,Select OK to create the wall,5,Remember the direction of growth effects how the wall will be modified if you change the Material thickness later,28,Defining Walls on Existing Parts,You will learn how to define walls on existing solid parts,29,Another way to start creating,钣金,walls is to take an existing solid and recognize(=change)the solid walls into,钣金,walls.,What is Wall Recognition?,Be aware that any cut outs in the part,when it is recognized,can only be modified in the Part Design workbench.,Reference Wall,30,Walls Recognition Definition dialog box,2 Wall creation modes:,Part body recognition:the whole solid is processed and walls are created wherever possible.,Only selected faces:only explicitly selected faces of the solid are processed and the corresponding walls are created.,Compulsory walls,-are faces from which the walls are to be generated when there might be an ambiguity.For example,if the initial part is a box,you will need to select two opposite inner faces and outer faces on the other two sides of the box,in order to avoid overlapping when generating the walls.,Internal profiles recognition mode:,As cut out wall:generates walls with inner contours(no cutout feature is generated)One cut out by wall:regardless of how many pockets there are on a face of the solid,only one cutout feature is generated per wall,One cut out by profile:for each inner contour on the sketch-based solid,a cutout feature is generated,None:whether there are pockets on the solid faces,or not,no cutout feature is created in the resulting,钣金,features.,31,Recognizing,Walls on Parts,Changes to Geometry will have to be done from the original creation geometry in the Part Design workbench,Select the Recognize icon,2,1,4,Select the Unfold icon,The Tree is updated with the New Walls,Select the Face of the Reference Wall,The thickness of the shell and the radius of the Fillet are taken as the default values in the SheetMetal Parameters.,5,3,Select the Definition parameters,32,钣金 弯曲,and,凸缘,In this lesson,you will see how to add,弯曲,to a part and also see some different type of,凸缘,that can be used when creating parts,Defining,弯曲,between Walls,Defining Different types of,凸缘,available,钣金 弯曲,and,凸缘,recap exercise,33,弯曲,can be created by four ways.If you choose,you can create your bend each time you create a wall on another wall or you can create a bunch of walls that show how your part will look and then use Automatic,弯曲,to create all of them at one time.,Defining,弯曲,for Walls,Singular Bend,Automatic,弯曲,Conical,弯曲,弯曲,from flat,34,A,钣金,part is created from one piece of metal that is cut to the shape needed and folded to create the part.These folds are what is call,弯曲,.,What are,弯曲,?,Bend,Bend Relief,Bend Relief is the material cut out(removed)to allow the folding of the part without tearing the material or causing it deform,35,In V5,the new methodology is to create groups of walls which have a common bend size.Allowing a group of walls to be created all at one time and save the steps of having to confirm the direction each time.,When to use Automatic,弯曲,?,In cases where you have non-standard,弯曲,you will have to use the singular bend capability and define direction.Therefore,it is important to make sure your standard bend is the most common bend size on your part.,Singular Bend Created first,All other,弯曲,are created with Automatic,弯曲,36,Using the Auto Bend Function,Today,the direction of the bend is chosen for you.,Display the part you wish to have the,弯曲,added too.,Select the Automatic Bend icon,1,2,All of the bend radii are created at the default value.,37,Using the Singular Bend function,Bend arrows can be selected to reverse them and the direction of the bend.,Select each of the walls involved in the bend,2,Select the Bend icon,1,The Bend Definition window is displayed indicating the Walls involved,radius value and angular value,3,The bend arrows are displayed showing the wall bend direction,4,The bend and reliefs are created as assigned in the original parameters window,38,Using the,Conical,Bend function,Bend arrows can be selected to reverse them and the direction of the bend.,Select each of the walls involved in the bend,2,Select the,Conical,Bend icon,1,The Bend Definition window is displayed indicating the Walls involved,radius,value,s,and angular value,3,The bend arrows are displayed showing the wall bend direction,4,39,Using the Bend,From Flat,function,Sketch a line on the future bend area,1,The Bend,From Flat,Definition window is displayed indicating the,Sketch,in,volved,radius,value,s,and angular value,3,Select OK,4,Select the,Bend,From Flat,icon,and the sketch,2,40,Modifying a Standard Bend Radius,This process can also be used to create a bend by selecting the equation icon,Select each of the walls involved in the bend,2,Select the Bend icon1,The Bend Definition window is displayed indicating the Walls involved,radius value and angular value,3,Key in the new value in the Bend definition window.Make sure the bend arrows are pointing in the proper direction,Right-click in the Radius field and select Formula/Deactivate,4,5,The bend and reliefs are created as assigned in the original parameters window,41,Using the Corner Relief function,2,You have several shapes for relieves:round,square,triangular.,Select the,More,button and switch to,Bend Corner Relief,Tab and activate the,Corner Relief,option,3,Double-click on the bend to edit it1,Click OK to validate,You can also define the Corner Relief in the SheetMetal Parameters,42,Using the,User,Corner Relief function,Select the Corner Relief Icon,the sketch and the three impacted,弯曲,directly on the geometry,3,Unfold the part;The User Corner Relief must be done on the unfolded part,1Sketch the desired profiles for the Corner Relief Area,2,Select OK,4,You can also have access to a catalog of pre,-defined,sketches instead of drawing your own sketch.,43,凸缘,come in four different types:Regular Flange,Hem Bend,Teardrop and Swept Flange.,Defining,凸缘,Regular,Flange,Hem Bend,Tear DropSwept Flange,44,凸缘,are different ways to form,钣金,into tabs,walls and edges that give functionality,beauty,strength and safety to the part.,What are,凸缘,?,45,Regular,凸缘,are used to create tabs in cut outs and simple,凸缘,around the edges of parts,When to use the various types of,凸缘,?,Tear Drops can also serve to create decorative edges as well as create things like hinge pins openings,Hem,弯曲,are used to strengthen long thin,钣金,parts and to also supply a smooth safe edge,Swept,凸缘,are used to sweep profiles around exterior edges of parts.,46,Simple,凸缘,Note:the edges selected can be one single edge,straight or curved or any number of either as long as they are connected.,Select the Flange icon,1,Select the edges,2,Key in an angle value,Key in the radius value,3,Key in the length value,4,5,Select OK to create the flange,6,47,The minimum radius accepted is,.01 mm,Key in a length,4,Select OK to create the Hem bend,Select the Hem Bend icon,Select the edge,Key in a radius value,As with any flange,multiple edges can be selected to wrap it around the part.,5,Hem,弯曲,1,2,3,48,Select the Tear Drop Bend icon,Key the length,Select an edge,2,Key in the radius,3,Select OK to create Tear Drop Bend,4,Tear Drop,凸缘,1,5,The length dimension cannot be less then the radius but it can be the same;allowing you to create a hinge pin opening.,49,Swept,凸缘,Only a single line profile needs to be created here.The flange key will add the thickness per the parameters characteristics,Select the Swept Flange icon,