Edu Cat en Lmg Fs v5r19

CATIA Training

COPYRIGHT DASSAULT SYSTEMES Version 5 Release 19 January 2009 EDU-CAT-EN-LMG-FS-V5R19

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Lathe Machining Detailed Steps

COPYRIGHT DASSAULT SYSTEMES 2

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Master Exercise: Crankshaft ................................................................................................................... 3 Step 1A: Open the V5 CATProduct..................................................................................................... 3 Step 1B: Define parameters of the Part Operation ............................................................................. 5 Step 2A: Define a Drilling Operation ................................................................................................... 7 Step 2B: Define a Rough Turning Operation..................................................................................... 10 Step 3: Define a Groove Turning Operation...................................................................................... 14 Step 4: Define a Recess Turning Operation...................................................................................... 18 Step 5: Define a Profile Finish Turning Operation............................................................................. 21 Step 6: Define a Thread Turning Operation ...................................................................................... 24 Step 7: Define a Sequential Turning Operation ................................................................................ 26

Added Exercises: .................................................................................................................................. 30 Step 8: Create a Ramp Rough Turning Operation............................................................................ 30 Step 9: Modify the Design Part.......................................................................................................... 34 Step 10: Generate Outputs................................................................................................................ 36


Master Exercise: Crankshaft Step 1A: Open the V5 CATProduct

File/Open Open the Set-Up.CATProduct

Access the Lathe Machining Workbench: Start Lathe Machining workbench

The PPR Tree is displayed in the left of the CATIA Window Process: The Part Operation & NC Cycles


Product: The Geometry necessary for NC such as Stock, Part, Fixtures, Machine-Tool table, Safety Planes, Starting points, etc

Resources: The shop floor resources such as Tools, Tool assemblies and Machine-tools


Step 1B: Define parameters of the Part Operation

Use the result of previous step or Open Define_PartOperation_Start.CATProcess 1.1 - Define the Stock

Double-click on the Part Operation to edit it (1) Click on Stock icon (2) Double-Click on the Stock model (3) Activate the Automatic Stock Selection for Turning Operations using MB3 on the Stock field

1.2 - Define the Machine-Tool (4) Select a Horizontal Lathe machine-tool

Select the LATHE.pptable as Post Processor Words table in the Numerical Control tab page Click OK

1.3 - Define the Machining Axis System Click on Reference Machining Axis System icon (5) Select the origin point in the Machining Axis System panel and select the center point of the

stock


Select the Z axis in the Machining Axis System panel and key 1, 0, 0 as spindle orientation Select the X axis in the Machining Axis System panel and key 0, 0, -1 as profile orientation

Click OK to create the Machining Axis system

In Simulation tab page of the Part Operation: Define a Stock Accuracy of 0.05mm to have a better Video Simulation

Click OK to create the Part Operation


Step 2A: Define a Drilling Operation

Use result of previous step or Open Drilling_Operation_Start.CATProcess

Select Manufacturing Program and click on Drilling icon 1.4 - Define the geometry to machine In Geometry tab page:

Select No Point in the panel Select the frontal hole on the part (put stock in no show )

1.5 - Define machining parameters In Strategy tab page:

Enter 3 mm as Approach Clearance value to take into account the stock

1.6 - Define the tool In tool tab page:

Select external tool database icon Select Personal_tools_catalog as tools catalog

(check whether Personal_tools_catalog file is copied in intel_a) Key 3.5 as nominal diameter for the query Select the candidate tool (tool number 2401)

In tool change assembly panel: Key a name for the assembly (ex: DrillAssembly) Set the Power value to Fixed (the part is turning not the tool)


1.7 - Replay the tool path Simulate the tool path using the video capability

1.8 - Simulate the tool path using the Video capability The Stock accuracy can be better by modifying the Stock Accuracy default value on the Part Operation in the Simulation tab page (key 0.02)



Step 2B: Define a Rough Turning Operation

Use result of previous step or Open Rough_Turning_Operation_Start.CATProcess

Click on Rough Turning Operation icon 1.9 - Define the geometry to machine

Select the Part element in the Geometry panel (1) Select a white point of the blue profile on the Part in order to select the full profile (2)

It is not necessary to select the stock as it has already been selected on the Part Operation Key 0.5mm as Part offset

1.10 - Define the Tool Assembly Select the Tool Assembly tab page in Insert tab:

Select the default diamond insert (1)

In Insert-Holder tab page: Click on more button (2)



1.11 - Define the strategy to machine In strategy tab page:

Key 1.5 as new Max depth of cut Add a part contouring path at the last path only

In Option tab page: Key 3mm as new Lift-off distance Tag Min Machining Radius option and key 1mm



1.12 - Define the macro

Activate Approach macro (1) Select a predefined macro: Axial-Radial (2)

Define the start point: Click on start point in the panel (3) Select the red point on the part (4)



1.13 - Replay the tool path

1.14 - Simulate the tool path using the video capability



Step 3: Define a Groove Turning Operation

Use result of previous step or Open Groove_Turning_Operation_Start.CATProcess

Click on Groove Turning Operation icon 1.15 - Define the geometry to machine

Select the Part element in the panel (1) Select the edge on the part (2) Key 0.0 mm as Part offset (3)

1.16 - Define the Strategy In strategy tab page:

Key 1.5 mm as Max Depth of Cut Select Center as First plunge Position Activate Part contouring Activate Change output point option



In Option tab page: Key 1.5mm as Lift-off distance Key 45deg as Lift-off angle Key 0 deg as Gouging Safety angle

1.17 - Define the Tool Assembly In Insert tab page:

Select a Groove Insert Key R1=R2=0.2 mm



In Insert-Holder tab page: Click on More>> Key 2.5mm as Insert Width (la) Select Compensation tab page Select P9R Key a value=10 for the corrector Number using MB3 on the P9R field

1.18 - Define the macro Create the same Axial-radial approach macro as in Rough Turning operation




1.20 - Simulate the tool path thanks the video capability



Step 4: Define a Recess Turning Operation Use Result of previous operation or Open Recess_Turning_Operation_Start.CATProcess

Put in Show mode the following sketch: Crankshaft/PartBody/Remove.2/Sketch.12

Click on Recess Turning Operation icon

1.21 - Define the geometry to machine Select the Part element in the panel Select the 3 edges on the Part belonging to the Sketch.12 (1)

1.22 - Define the strategy In strategy tab page: Set the following parameters

1.23 - Define the Tool Assembly In Tool Assembly tab page:

Click on the button Select the same tool assembly as for the Rough Turning operation



1.24 - Define the macro Create the same Axial-radial approach macro as in Rough Turning operation 1.25 - Replay the tool path

Simulate the tool path using the video capability

NB: You have to create another Recess Turning operation to machine the remaining material of the previous Recess Turning operation



Step 5: Define a Profile Finish Turning Operation

Use Result of previous operation or Open Profile_Finish_Turning_Operation_Start.CATProcess

Click on Profile Finish Turning Operation icon 1.26 - Define the geometry to machine

Select the Part element in the panel Select the two first elements of the dark blue profile and click on Navigate on Belt of

Edges(as shown)

Click again on this icon to select also the following edges because by default the navigation take only 10 edges OR click on the Option icon of the Edge Selection tool bar to increase the Max Step Forward

Select End limit mode plane on the tab Select the limit surface (1) MB3 on None and select: In (2)

1.27 - Define the strategy In Machining tab page:

Key -45 as Lift-off angle Key 0 as Lead-in angle Key 0 as Leading Safety angle



1.28 - Define local strategy MB3 on the part element Select Add local information Deselect Global feedrate and key 0.4 as local value Key 0.1mm as local offset

In the same way put the same thickness on the next element of the profile MB3 on one of a profile element and select Properties. The selected elements are highlighted

1.29 - Define the Tool Assembly Select the Turning Tooling Assembly.1 in the list 1.30 - Define the macro Create the same Axial-Radial approach macro as in previous operation



Step 6: Define a Thread Turning Operation

Use Result of previous operation or Open Thread_Turning_Operation_Start.CATProcess

Click on Thread Turning Operation icon 1.33 - Define the geometry to machine

Select the Part element in the panel Double-click on the edge to select it (shown in Red) Key 15 mm as Length to thread

1.34 - Define the strategy In thread tab page:

Key 0.5 as Pitch Select Trapezoidal Profile

In option tab page: Key 0.5 mm as Clearance on crest diameter. Key 90 degrees as Lift-off angle Do not select Change output point option Do not select Output CYCLE syntax option



1.35 - Define the macro Create the same Axial-Radial approach macro as in previous turning operation 1.36 - Replay the tool path




Step 7: Define a Sequential Turning Operation

Use Result of previous operation or Open Sequential_Turning_Operation_Start.CATProcess

Click on Sequential Turning Operation icon 1.38 - Define the Tool Assembly In the insert tab page:

Select a Groove Insert Set the following values

In the Insert-Holder tab page: Select Groove Internal Insert-Holder Set the following values

In the assembly tab page: Key 90 deg as Setup angle



1.39 - Define the motions In the strategy tab page:

a) Create a Go to point motion: Click on Standard Go or Go-Go icon Select the first check element on the panel and select the first check element on the part Select the second check element on the panel and the second check element on the part Set the first and the second check mode to To using contextual menu Create the tool motion

b) Create a Go in direction motion: Select the created tool motion

Click on Go InDirV icon Select the driving element on the panel and select the Drive element on the part Select the First check element on the panel and select the Check element on the part Set the First check mode to To Create the tool motion

c) Create a Follow motion: Click on Follow icon Select the First check element on the panel and select the Check element on the part Set the First Check mode to Past Create the tool motion



d) Create a Go in direction motion:

Click on Go InDirV icon Select the driving element on the panel and select the Drive element on the part Select the First check element on the panel and select the Check element on the part Set the First check mode to Past Create the tool motion

1.40 - Define the macro Create an approach macro in direct mode starting from the standard start point





Close all the CATIA documents



Added Exercises: Step 8: Create a Ramp Rough Turning Operation 1.1 - Create an New CATProcess

Select File / New in the top menu bar Select Process in the type of new document to create

1.2 - Go to Lathe Machining Workbench

1.3 - Create a Machining Process including a Ramp Rough Turning Operation

Select the Machining Process View icon

Click the Machining Process icon

Select the Ramp Rough Turning operation icon In Strategy / Rework tab page:

Activate Rework Mode option

In Feeds & Speeds tab page:



Activate Replace RAPID by Air Cutting Feedrate

In Macro tab page: Create a linking macro with interrupt motion On Time = 500s Create Linking Axial-Radial Approach & Radial-Axial Retract

1.4 - Define the Tooling query Double-click on Tooling query in machining process view. In the Holder query tab page:

Select External Insert-Holder Select the catalog to look in: LatheInsertsAndHoldersSample.catalog Define the 2 following constraints: Insert Length 1.4*Ramp Rough Turning. Max depth of cut



In the Insert query tab page: Select the catalog to look in: LatheInsetrsAndHoldersSample.catalog Define the 2 following constraints: Nose Radius >1.5*Ramp Rough Turning.Max depth of cut Nose Radius



1.9 - Define Geometry elements Edit the Ramp Rough Turning operation Select the dark blue profile along the part as Part Element profile Select Round Insert in Tool tab Define the Start & End points for the linking Approach and Retract macro

1.10 - Replay the tool path Simulate the tool path using the video capability

Close all the CATIA documents



Step 9: Modify the Design Part Open the DesignChange_GenerateOutputs_Start.CATProcess MB3 on the Manufacturing Program then Compute Stock and Tool Path

1.11 - Change parameters to modify the Part Double-click on the CATPart: Crankshaft to go to Product Structure Workbench Open the Relation node

(if Relations node is not active, go to Tools-Options-Part Infrastructure-Display and make Relations node active.)

Double click on Design Table to go to Knowledge Advisor Workbench Expand it

Select Configuration 2 in the Design Table Update manually the Crankshaft.CATPart if necessary Click OK to update the impacted operations by the modification Double-click on the Part operation to go back to LMG Workbench Select the Manufacturing Program

1.12 - Replay the Operations on new geometry Select the Last Machining Operation Click on Tool Path Replay icon

Simulate the complete new program

Click on Video icon Click Forward Replay to replay all the manufacturing Program



Step 10: Generate Outputs

Open DesignChange_GenerateOutputs_Start.CATProcess

1.13 - Processing a NC documentation

Click on the Generate Documentation icon Define the path for the output Generated files Click on OK to generate the NC Documentation Click on Yes in the VBScript panel to open the HTML document



1.14 - Processing an APT Source

MB3 on Manufacturing Program.1 Select Generate NC code interactively In the NC Data Type, Select APT Make sure that Associate output NC file to the program tab is active Click on Execute A Pop-up window appears at the end of the APT computation Browse the result, using MB3 on the Manufacturing Program and Display NC File

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