Asistente de Preparacion Al Mecanizado Prismatico

7/25/2019 Asistente de Preparacion Al Mecanizado Prismatico

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Prismatic Machining Preparation Assistant

Copyright DASSAULT SYSTEMES 1

CopyrightDASSAULTSYSTEMES

Prismatic MachiningPreparationAssistant

CATIA V5 TrainingFoils

Version 5 Release 18September 2007

EDU_CAT_EN_MPA_FF_V5R18


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About this course

Objectives of the courseUpon completion of this course you will be able to:

- Define 2.5 Axis Milling operations in CATIA V5

- Create prismatic machinable features- Form a link between Design and Manufacturing

Targeted audience

NC Programmers

PrerequisitesStudents attending this course should have knowledge of CATIAV5 Fundamentals, Numerical Control Infrastructure, PrismaticMachining 0.5 day


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Table of Contents

Introduction 4

About Prismatic Machining Preparation Assistant 5

Accessing the Workbench and the Toolbar 6

Prismatic Machining Preparation Assistant: User Interface 7

Global Feature Recognition 8

Global Feature Recognition: General Process 9

Global Feature Recognition: Basic Options 10

Global Feature Recognition: Advanced Options 18

Global Feature Recognition: Automatic Pattern Creation 19

Local Feature Recognition 20

Local Feature Recognition: General Process 21

Automatic Pattern Creation for machinable Axial Features 22

Results of the Global/Local Feature Recognition 23


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IntroductionIn this lesson, you will learn basics of Prismatic Machining PreparationAssistant.


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Using its Machinable Features Recognition technology, Prismatic MachiningPreparation Assistant allows Prismatic Machinable Features creation for all kinds of

CATIA Design Parts, even those with no Design Feature specifications.

It is totally integrated with the Prismatic Machining and Advanced Machining products.

Prismatic Machining Preparation Assistant offers the following main capabilities:Automatically creates all Prismatic Machinable Features of a Design Part

Locally creates a Prismatic Machining Feature of a Design Part

Machinable Features integration in Prismatic Machining product

Management of recognized Prismatic Machinable Features in Manufacturing View(Presentation, Edition, Highlight)

About Prismatic Machining Preparation Assistant


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Accessing the Workbench and the Toolbar

Blank Manufacturing CATProcess to startB

A Start Menu

You will become familiar with different methods to access the workbench and the toolbar.

See Tools + Customize + Start menu forthe content of this Welcome Box

C

from A - Start menu

or B - File menu + New

or C - Workbench Icon

For accessing toolbar:

View > Toolbars > Prismatic Machining Preparation


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Global feature recognition

Local feature recognition

Automatic pattern creation for machinable axial features

Prismatic Machining Workbench

Prismatic Machining Preparation Assistant: User Interface

Prismatic Machining Product

Prismatic Machining PreparationAssistant Product

Point To Point Operation Creation

Prismatic Roughing Operation Creation

Drilling Operation Creation

Pocketing Operation Creation

Facing Operation Creation

Profile Contouring Operation Creation

Curve Following Operation CreationGroove Milling Operation Creation

4 Axis Pocketing Operation Creation


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Global Feature RecognitionThis lesson will show you how to prepare a design part for manufacturing, byautomatically creating all recognizable prismatic machinable features.


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Global Feature Recognition: General Process

Click the Global Feature Recognition icon

The Global Feature Recognition dialog boxappears.

The Selection Type option allows you to run thefeature recognition on:

One or several bodies

One or several selected faces


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Global Feature Recognition: Basic Options (1/8)

Tapered HoleTapered hole is characterized by:

origin point and directionhole depth, diameter andangle

extension type: blind orthrough.

Counterdrilled Hole

Counterdrilled hole ischaracterized by:

origin point and directionhole depth and diametercountersink anglecounterbore depth anddiameter

Counterbored HoleCounterbored hole ischaracterized by:

origin point and directionhole depth and diametercounterbore depth anddiameterextension type: blind orthrough.

Simple HoleSimple hole is characterizedby:

origin point and directionhole depth and diameterextension type: blind orthroughbottom type: flat or V.

Countersunk HoleCountersunk hole is characterizedby:

origin point and directionhole depth and diametercountersink angle anddiametercounterbore depthextension type: blind orthrough.


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The blue hole will generate a single holeif the option is activated or 4 separateholes if the option is not activated.

Tab HolesThe purpose of this option is to recognize complexholes (multi-diameter holes) that are not Standard PartDesign Features (Counterbored Holes, Countersunk

Holes).

If the option is activated, several simple holes will becreated to fit with the tab holesIf the option is not activated, the holes belonging to thetab holes are not created (default behavior)

Merge of Co-Axial HolesThis option is used to automatically mergeco-axial holes that share the sameparameters (Diameter, Tolerance).In Global Feature Recognition, the holeextremity has to be blind to be recognized.In Local Feature Recognition, full throughholes can be recognized.


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Complex StepA complex step is an open multi-sided recess.Specifications on part:

A bottom stamp as a hard stamp

A top element as a top limitA boundary comprising a series ofordered faces with hard and softqualifications

Results in Prismatic Machining Area:A depth from top to bottomA top planeA bottom planeA wireframe contour with a series ofelements qualified as soft and hardA Minimum Corner RadiusA Minimum & Maximum Channel Width


Minimum Corner

Radius

Minimum ChannelWidth

Maximum ChannelWidth


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Complex CutoutA complex cutout is a multi-sided opening through the part.Specifications on part:

A bottom element as a bottom limit

A top element as a top limitA boundary comprising a series of ordered faces

Results in Prismatic Machining Area:A depth from top to bottomA top planeA bottom planeA wireframe contourA Minimum Corner Radius

A Minimum & Maximum Channel Width

Complex PocketA complex pocket is a closed multi-sided recess.Specifications on part:

A bottom stamp as a hard stampA top element as a top limitA boundary comprising a series of ordered faces

Results in Prismatic Machining Area:A depth from top to bottomA top planeA bottom planeA wireframe contourA Minimum Corner RadiusA Minimum & Maximum Channel Width


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Through SlotA through slot is a specific step whose contour is two parallelfaces as a hard boundary and two other faces as limits.

Specifications on part:A bottom stamp as a hard stampA top element as a top limitA boundary comprising a series of 4 ordered faces withhard and soft qualifications

Blind SlotA blind slot is a specific step with two parallel lines and acorner between them. It has an open boundary.Specifications on part:

A bottom stamp as a hard stampA top element as a top limitA boundary comprising a series of 4 ordered faces withhard and soft qualifications

Results in Prismatic Machining Area:A depth from top to bottomA top planeA bottom plane

A wireframe contour with 4 elements: 2 lines, 1 half circleand one other elementA Minimum Corner RadiusA Minimum & Maximum Channel Width


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Results in Prismatic Machining Area:A depth from top to bottomA top planeA bottom plane

A wireframe contour with 4 elements: 2 lines and two otherelementsA Minimum Corner RadiusA Minimum & Maximum Channel Width

Islands Management

Islands can be recognized and associated toPocket and Step machinable features.

Specifications on part:A bottom stamp as a hard stamp

A top element as a top limitA boundary comprising a series ofordered faces

Results in Prismatic Machining Area:

A depth from top to bottomA top plane

A bottom planeA wireframe contour

As islands are relimited by the Top of thePrismatic Machining Area, you need to becareful when you create the operation. Macroscan go through Islands

Top

Linking motion upper thanthe top plane but incollision with the Island

Bottom

Island


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The machining features can be recognized, in which:

Top face is not parallel to bottom face (inclined)

Top face is non-planar

Improved Milling Feature Recognition

The milling areas (with non-planar or inclined top

element) are now taken into account for featurecreation (Prismatic Machining Area). The feature

recognition is done with respect to the bottomface only.

The machining pocket feature can be recognized inwhich hole is intersecting with the pocket.

Feature recognition provides a Prismatic MachiningArea corresponding to a Complex Pocket. The

boundary can be defined by a hard boundary only. Animaginary contour at the intersection of Hole and Slot,is automatically defined to close the hard contour.

Inclined Top face Non-planar Top face

Hard boundary


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User Information after global feature recognition

A pop-up displays user information at the end of thefeature recognition process in Global or Local mode

The following information are displayed:List of input bodies selectedTotal Number of faces in all input bodies

Number of faces used for features creationNumber of machining features recognized &created by type

All recognized machinable features are added to the

Manufacturing View



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Global Feature Recognition: Advanced Options

Machining Direction

If needed, specify a preferred machining direction forthrough features by selecting a face, line or an edge.

The through features (Holes & Cutout) are created

according the selected direction (Top plane)

If the option Create Features only in this direction is

activated, all the created features will have the samemachining direction

Hole / Pocket or Cutout

If needed, specify a Hole limit diameter. If a diameterhas a greater value than this limit, a circular pocketor cutout is created rather a hole.

Tapered Holes

You can choose to ignore the fact that the hole typeis tapered during feature recognition.

In this way, you can force chamfered holes to berecognized as simple holes.


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Global Feature Recognition: Automatic Pattern Creation

Allows creating machinable axial features and machining patterns in a single step

During the creation of the machinable axial features,

machining patterns are automatically created to

group them according some parameters:DiameterDepthHole TypeHole Extension

Tolerance Value (H7, Min/max)Color

Thread parameters

The parameters have to be identical or in the samerange (between minimum & maximum values) to be

grouped automatically in the same machining pattern


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Local Feature RecognitionIn this lesson, you will learn how to prepare a design part for manufacturing bymanual machinable features creation.


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Local Feature Recognition: General Process

Select the Local Feature Recognition icon

The Local Feature Recognition dialog boxdisplays.

With the combo-box you can select the type of

feature to be recognized

In the 3D view, locally select one or severalfaces that will allow the feature to be

recognized

To deselect a selected face, just reselect it andto deselect all selected faces, click RemoveAll.


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Automatic Pattern Creation for Machinable Axial Features

This lesson shows you how to create automatically a machining pattern ofAxial Features

After the creation of the machinable axial features,machining patterns can be created to group themaccording some parameters:

Diameter

DepthHole TypeHole Extension

Tolerance Value (H7, Min/max, )ColorThread parameters

The parameters have to be identical or in the samerange (between minimum & maximum values) to begrouped them in the same machining pattern.


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Results of the Global/Local Feature Recognition (1/3)

All Machinable Features can be fully machined with Prismatic Machining strategies by creating elementaryMachining Operations or applying complex Machining Processes in both drilling and milling domains.

Select the Manufacturing View icon in the Machining Features toolbar

Right-click the Manufacturing View object and select the Sort by Machinable Features command

Double-click the feature in the tree

A dialog box appears showing all the characteristics of the feature

For through machining feature, use MB3 to reverse the machining direction


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For Prismatic Machining Area, computed parameters can be displayed to help the user to

choose the right tool or parameters manually or through knowledgeware.

Minimum CornerRadius

Minimum ChannelWidth

Maximum ChannelWidth


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The manufacturing view can be used todisplay the Machining features list, the

Machining patterns list,

All the created Prismatic Machining Areas,

Machinable Axial Features, MachiningPatterns can be easily deleted if they are not

used by any machining operation using thecontextual menu

Machining Patterns have to be deletedbefore the Machining Axial Features used bythem

Co-Axial holes sharing the same parameters(Diameter, tolerance) can be merged

manually after Global Feature Recognition.

Asistente de Preparacion Al Mecanizado Prismatico

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