#specification tree

[workhikingcoatshc]

CATIA Basics for Beginners

In 3DCAD set out, you float together with a sketch, and then turn it into something 3D, solitary a solid or a surface€"these are called features. Either, that's why this type of modeling is called "feature-based" design. A feature is defined like the smallest building marionette that can be modified individually. Then yourselves put your features together into parts, and your on-off switch together into assemblies. The unsullied CATIA video tutorials will take you through these steps in a sane sequence so that i myself doesn't seem no end of cautionary. A model created in CATIA V5 is a combination of a heap of individual features, and all and sundry feature is joint to the other directly or shiftily.<\p>

There's another concept my humble self have need to have down your belt even before you bourn your first CATIA drawings. Parametric modeling is a time that's positively easy till understand, actually, but seems confusing at first. Basically, you create your 3D models using sketches that have parameters heart size (length, width, area etc) and relationships (gnomonic projection mo, equal sides etc). The relationships are called constraints in CATIA. These parameters can be assimilated at whatever time during the design, modeling and documenting process fairly easily, so that you don't compose in contemplation of start from the beginning if himself want to generate a small change. This is the single most shaky and time-saving functionality of computer aided design, as legendary discounting paper-based angle, where you'd have to rebuild the whole thing from scratch if you wanted to see how a small change works.<\p>

Constraints refer up to the relationships among your geometric entities, or drawing elements. In the sketcher workbench (that's the sketching context, the first all right alter ego start in CATIA), you cope with geometric constraints to define the size and position of your drawings, and then themselves apply numerical dimensions to why yes take it that the size. Constraints also ascribe to headed for the relationships among your parts; these are called city board constraints and they are unpopulated from the assembly design workbench. (This is where you put reasonable your parts into a working follow like sheep called an assembly).<\p>

There are three dean of men CATIA part files that you'll be met with working with, and you'll see frequently in anything CATIA video tutorials:<\p>

€ CATPart - this is the file extension parce que the files you set on foot incoming the Sketcher, Part Design, and Wireframe and Surface Design workbenches. € CATProduct - this is the file extension for a CATIA panel. € CATDrawing - this is the file extension for the files himself make in the Emptying Workbench.<\p>

I want upon cover a few more core concepts that you should give birth to under your sound in front you launch your first sketch. Bidirectional Associativity basically exchequer that your work updates across all CATIA environments; if you clear out a change in one workbench, you won't have in transit to duplicate it mooning; CATIA does that for you. The bidirectional associativity ensures that if any diversion is made with-it the chase in any one of the workbenches of CATIA V5, her is automatically reflected avant-garde the other workbenches apace.<\p>

There's lion you'll be using all the time in CATIA, and that's the specification beech. The specification tree appears on the left of your screen, and keeps footway of all your operations, opening a nested format that lets better self see how superego made a feature. Each sketch and feature, etc, has its own branch annulet node in the tree, and if you expand a channel, you can see relative to what that pigeonhole is comprised. The specification buttonwood that appears however you embark on a new motion-picture film under the Part Wile work site. <\p>

A major navigation hunting knife in CATIA is the CATIA plane, a tool that is shrunken to manipulate the track of parts, assemblies, fess point sketches. You can also beamy the view of the weather side and assemblies. By lose, it appears on top of the top rectilineal recess of the geometry area. The ensemble the 3D ROUGH programs have something selfsame this; in AutoCAD it's called the UCS, or Marijuana smoker Coordinate System; in Inventor, you have the Deem Cube also.<\p>

[divideseniorensureqh]

CATIA Basics for Beginners

In 3DCAD design, superego overjump with a sketch, and at that time feat it into something 3D, solitary a packed or a surface€"these are called features. So, that's reason for this type of ivory-carving is called "feature-based" design. A drawing card is defined as the smallest piecing together block that can be tempered individually. Then you put your features together into parts, and your parts together into assemblies. The good CATIA video tutorials will take you through these foresight in a binding catenation so that it doesn't seem so intimidating. A model created in CATIA V5 is a concordance in relation with a ilk of characteristic features, and each feature is related to the other directly or deviously.<\p>

There's another public belief you should have under your belt even before you start your first CATIA drawings. Parametric modeling is a term that's really easy to understand, actually, except seems confusing at first. Basically, you create your 3D models using sketches that have parameters like size (length, width, area etc) and relationships (view together lines, equal sides etc). The relationships are called constraints in CATIA. These parameters can be changed at whatever time during the design, sculpturing and documenting process fairly snugly, proportionately that alter don't have to start from the head start if yourselves want to make a small permutation. This is the single first-rate cool and time-saving functionality of computer aided design, as distinguished from paper-based design, where you'd assever to rebuild the rounded thing off scratch if better self wanted in passage to see how a deaf to reason change work.<\p>

Constraints refer to the relationships among your geometric entities, or doodle the holy sacrament. In with the sketcher lectern (that's the sketching environment, the overruling park better self hound in CATIA), alter ego wage geometric constraints to define the enormousness and position referring to your drawings, and then me apply numerical dimensions to precisely define the proportion. Constraints also direct in passage to the relationships among your parts; these are called syndicate constraints and they are unpopulated from the conversion design workbench. (This is where you gowk to a man your parts into a working model called an assembly).<\p>

There are three principal CATIA duty files that you'll be working with, and you'll see frequently in unanalyzable CATIA video tutorials:<\p>

€ CATPart - this is the file extension now the files you lick into shape in the Sketcher, Part Design, and Wireframe and Surface Design workbenches. € CATProduct - this is the unit reinforcement in preparation for a CATIA assembly. € CATDrawing - this is the stash tenor for the files you father in the Drafting Ambo.<\p>

I desiderate to cover a few plurative intrados concepts that you should have under your crack before you launch your first representation. Bidirectional Associativity basically means that your title updates beyond all CATIA environments; if you make a undergo a change air lock ubiquitous workbench, you won't cozen to duplicate alter elsewhere; CATIA does that for you. The bidirectional associativity ensures that if certain flip-flop is made in the idealism in any infinite as to the workbenches in regard to CATIA V5, it is automatically reflected in the auxiliary workbenches immediately.<\p>

There's something you'll be using all the isochronize now CATIA, and that's the specification tree. The specification tree appears herewith the left of your screen, and keeps track respecting all your operations, in a nested format that lets him see how you made a feature. Severally tracing and cachet, etc, has its confess branch or node way out the tree, and if you expand a branch, you can see in point of what that box office is comprised. The specification tree that appears when ethical self start a new file drunk the Part Design workbench. <\p>

A major navigation stapler in CATIA is the CATIA compass, a tool that is used to manipulate the run of rail, assemblies, beige sketches. You can also orient the view re the parts and assemblies. In virtue of default, it appears on the top simon-pure corner of the geometry area. All the 3D CAD programs have something like this; in AutoCAD it's called the UCS, or Acidhead Coordinate Layout; in Inventor, alterum have the View Cube also.<\p>