PRO E DESIGN

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CAM Tutorial CREO PARAMETRIC 1.0 week 2 Part 3

Revised by Tomas Benzon DTU MEK March 2012 on basis of original COACH material Page 1

PART 3: PROFILING

CREATING A BASIC PATH

Profile the outside of the bracket which you used in the Basic Machining Lesson.

If you do not have the file open from the previous Lesson, you can open lesson2_basic.asm.

1. Create a Machine Tool / Work Center.

Choose Work Center, and create a Machine Tool / Work Center In the Milling Work Centerdialogue, choose: Millfor machine typeand 3Axisfor

number of axes (default settings). Leave the dialogue with an OK. TheMILL 01 now

shows on the Model Tree

2. Create an Operation

Choose Operation, .To define a Machine Zero Coordinate system,select theCS0 Coordinate system. Leave the dialogue with an OK. TheOP020 [MILL 01]nowshows on the Model Tree

The Mill top pane is now accessible.Choose it, and below it choose Profile

Milling.The Profile Milling topribbon dialogue displays:

Before starting this tutorial:

Ensure that you have downloaded all CAM files from the write-protected drive

(R:\Kurser\CAM-42817\cam1_mm\) and placed them on your own drive (I:\)Set the Working Directory to the directory on your own drive where you placed the CAMfiles.


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Select the outer vertical faces of the partl, one by one, using the mouse and the CTRLbutton. - The Surface Setsdialogue will list the selected faces.

Close the Surface Setsdialogue with an OK

This dialogue is a replacement of the Menu Managerwalk-through menus. It contains several

variables, which all must be defined in order to run an NC sequence. The yellow color signalswhich entries are still missing. The first is Tooldefinition:

Choose the Tool icon .The familiar Tools setup appears:

For Type, choose MillingFor tool length, type 75

For tool diameter, type 25To exit, chooseApply, followed by OK -The profile Milling top dialog replaces the No Toolwith

01: T0001for Tool name

The next entry is the Referencetab, defining which faces on the model are to be machined:

Choose the Reference tab and chooseDetails :

Exterior vertical faces are selected

The Details button will open the

Surface SetsdialogueSurface


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Now all the variables necessary for executing the Profile Millinghave been defined. The Tool

Path can be displayed: Click theDisplay Tool Path icon in the Profile Millingdialogue

Run Play Path

The Parameterpane is the last entry:

Choose it, and choose the EditMachining Parametersicon bottom right

Choose it, and the well-known Edit Parametersdialogue

opens

In the Param Tree window,click with the mouse cursor in thefield to the right of the textCUT_FEEDand type 75

Click with the mouse cursor inthe field to the right of the textSTEP_DEPTHand type 6

Click with the mouse cursor inthe field to the right of the textCLEAR_DISTand type 2.5

Click with the mouse cursor in the

field to the right of the text

SPINDLE_SPEEDand type 500

Click OKto save and exit


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The system displays

the tool path as shown

Step Depth 25

Step Depth 100

3. Now use a step depthof 100.

In the Profile Millingdialogue choose theParameterstabIn the list below changeStep Depthfrom 25to100 and press Return

4. Play the tool path.

Click theDisplay ToolPath iconRun Play Path

Choose the Closebutton from the PLAY

PATHdialog.

Since the Step Depthis greater (in this case, much greater) than the depth of the part, the system generates a

single pass at the bottom of the part (as defined by the height of the surfaces being profiled). steps.

Use several different Step Depthvalues to profile the outside of the part.

1.Modify the Step Depthparameter to 25.

In the Profile Millingdialogue choose the ParameterstabIn the list below change Step Depthfrom 6to 25 and press Return


Click theDisplayTool Path iconRun Play Path

Choose the Closebutton from the PLAYPATHdialog.

SPECIFYING STEP DEPTH

Choose Closebutton from the PLAY PATH dialog

Note: In a little while you will change this NC Sequenceto give you a more optimal output. So let the Profile Millingtab

remain open.


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The system displays the tool path as

shown to the left.

You may sometimes find that the point

at which the tool enters and exits the

material is different than shown

here....


Choose Play Path- Screen Play-Play Forward

Choose Closefrom the Play Pathdialog

Choose the Allaction buttonin the upper left corner of the

ParameterSetup window

Click once on the parameter

Name to sort the list alphabeti-cally

You will have to scroll down thelist to find the settings

you are about to change.....

Click with the mouse cursor in

the field to the right of the textCUT_ENTRY_EXTand chooseLEAD_INon the pull - down

menuClick with the mouse cursor in

the field to the right of the textCUT_EXIT_EXTand

choose LEAD_OUTon the pull -down menu

Click with the mouse cursor in

the field to the right of the text

LEAD_RADIUSand type25Exit from the ParameterSetup

window by choosing OK

LEAD IN & LEAD OUT

Add a Lead In and Lead Outto the current tool path. Also change the Step Depthagain to seehow this affects the Lead Inand Lead Out.

1. Add Lead In, Lead Outand Lead Radius.

Choose the Parameterstab -The system displays the ParameterSetup window.....in the bottomof the list, choose the Edit Machining Parameters icon


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3.Set the Step Depthback to 6, by re-entering the Parameterstab dialog.

4. Play the updated tool path.

Choose Play Path- Screen Play- Play Forward

Notice that the Lead Inand

Lead Outare applied to

each Cut Level.

Choose Closefrom the Play Pathdialog

5. Set Tangent_Lead_Stepto 50and play updated path.

Choose Closefrom the PlayPathdialog

6. Set Normal_Lead_Step to20, andplay updated path.

Click with the mouse cursor inthe field to the right of the textTANGENT_LEAD_STEPandtype 50. Close the ParameterSetup Dialogue box the usualway - with an OKin the bottom.

Choose Play Path- ScreenPlay- Play Forward

Click with the mouse cursor inthe field to the right of the textNORMAL_LEAD_STEP andtype 20. Close the Parameter

SetupDialogue box with an OKin the bottom.

Choose Play Path- ScreenPlay- Play Forward

Tangent_Lead_Step

with a value of 50

50


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You may want to spend some time trying out different combinations of the above parameters.

ATTENTION

The final step of the above exercise must be REVIEWEDandAPPROVEDby yourINSTRUCTORto make you eligible for a signature on your approval sheet confirming yoursuccessful completion of this tutorial.

Choose Closefrom thePlay Pathdialog

7. Set Overtravel_Distanceto 40and play updated path.

Overtravel_Distance

with a value of 40 40

Normal_Lead_Stepwith a value of 20

20


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PART 4: MANIPULATING A MILL PATH

SCAN TYPE

Using the provided manufacturing model, try several scan types to rough the electrode (shown

below) out of a block of graphite..

2. Proceed ahead to where you can play the path using the default scan type of TYPE_1.

On the Model Tree, find Volume Milling(OP010), right-click on it and choose Play path

Play the tool path - Play Forward

1. Open the manufacturing model called: vol5.asm

The NC Sequence was

pre-programmed to run

with Scan Type 1


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3. Change the scan type to TYPE_2.

Close the Player On the Model Tree, find Volume Milling(OP010), right-click on it again and chooseEdit Definition. -The Menu Managerappears in the upper right corner of the screen

Choose Seq Setup-The Seq setupwishing list appears

Choose Parameterson the list or use to open the Edit Parameters dialoque box

Click with the mouse cursor in the field to the right of the text SCAN_TYPEand Click

on TYPE_2 Exit the Parameter Setupwindow


Choose Play Path - Screen Play - Play Forward

The NC Sequence running

with Scan Type 2

The NC Sequence runningwith Scan Type 3

6. Change the scan type to TYPE_3.

Choose


on TYPE_3 Exit the Parameter Setupwindow



8. Change the scan type to TYPE_SPIRAL

Choose


on TYPE_SPIRAL Exit the Parameter Setupwindow




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APPROACH WALL

Specify approach walls to machine the part using scan types TYPE_2and TYPE_ONE_DIR.

1. Change back to scan type TYPE_2.

2. Play the path..

The NC Sequence runnig

with Scan Type SPIRAL


with Scan Type ONE

DIRECTION

The NC Sequence running

with Scan Type 1_CONNECT

10. Change the scan type to TYPE_ONE_DIR.


12. Change the scan type to TYPE_1_CONNECT.



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with Scan Type 2

Approaching wal lchosen

The arrow indicates where

the tool passes through the

approaching wall

3. Define anApproach Wallon the left side of the volume.

Choose Seq Setupfrom the NC SEQUENCEmenuIn theSeq Setup wishing listChooseAppr Walls

Choose Done

Select the left edge of the milling window as shown below

Choose OK in the Select dialogueChoose Done

4. Play the path.


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MODIFYING A VOLUME

Remove a block of material from the volume and replay the path.

1. Modify the milling window to remove the material.

The tool passes through

both the left and the right

approaching wall

5. Change the scan type to TYPE_ONE_DIR

ChooseClick with the mouse cursor in the field to the right of the text SCAN_TYPE and click

on TYPE_ONE_DIR Exit the Parameter Setupwindow

6. Add another approach wall.

Choose Seq SetupChooseAppr Walls

Choose Done Select the right edge of the milling window as shown below

Choose Seq Setup

In theSeq Setup wishing listChoose Window Choose Done Choose Redef Wind- On the top menu, these icons will now appear:

Choose the one to the right: (Edit Internal Sketch)

Choose OK in the Select dialogueChoose Done

7. Play the path.


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The Sketcher opens and is

ready for input

The original sketch vs. the

changed one (Thin green

line)

Using familiar tools, edit the sketch so it appears like this:

Click the greenOK button in the Sketchertab followed by the greenOK button whensketch editing is finished:


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The revised Milling Window

- How will it affect the actualmilling?

2. Rotate the view to a 3D appearance.3. Change back to scan type TYPE_1.

4. Play the Path.

5. Return to the main menu and erase all files.


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OPTIMIZING REGIONS

Generate a tool path to machine the inside of the support bracket shown below. Reorder theregions to force the system to process each one individually.

1. Open the manufacturing model called: vol6.asm

2. Skip ahead to where you can play the path using the default scan type of TYPE_1.

In the model Tree, right-click on 1. Volume Milling (OP010) and choose Edit definition

In the Menu Manager, Choose Play Part / Screen Play

3. Play the path.

4. Add a new path driven by Regions(and not slices). The current path will still remain and willbe dealt with later.

Choose Customize

The system displays the Customizedialog and the CL Data window as shown below. The CL Data window

contains the cutter information for the tool path that was just completed. The CL Data window sometimes hides

behind the graphics window

The result would look approximately like

this. Please notice that the tool cuts a slice

in the left pocket, jumps over the cross

wall, cuts a slice in the middle pocket,

jumps again and cuts in the right pocket.The process is then repeated one level

deeper, and so on, gradually carving all

three pockets by Slices. This is one of

two basic methods of cutting. The alterna-

tive one is by Regions, where each hole

(Region) is cut from top to bottom before

moving on to the next.

The Customize

dialoguebox and

the CL(Cutter

Location data)info

box


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6. Play the cut. Choose Play PathThe new optimized cutter path is displayed on top of the existing cutter path as shown below.

7. Now it would be convenient to remove the original cutter path so double cutting is avoided:

Choose Customize

In the Customizebox take a look once again:

When you wil have completed the following section there will be multiple cutter paths machining the same areas. Ina later section you will learn how to delete the unwanted cutter paths and keep only the one you want.

In the Customizeboxchoose the Insertaction button In theVOL/PROF CUTmenu chooseAutomat ic Choose Done Choose Build Cut- and verify that By Region is active

Choose Order Regions- which allows you to point out which hole to dig first

Choose Done Order Choose Done/Return Choose Done Cut - You will now notice that that the listings in the customizebox grew from 4to 7.

(You just added 3). Unfortunately they are not renameable, but you can choose them one by one and seetheir influence of the cutter path

Exit the Customizebox with an OK

5. Repaintthe screen.

If it is hard to notice the differ-

ence from before, you may use

the NC Checkoption


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9. Now, force the system to cut the pocket all the way to left first, then the middle pocket, thenthe right pocket.

Choose Customize

In the Customizebox, choose 1: Automatic CutClick RedefineIn the Menu Managerchoose Build Cut

Choose Order Regions- The Regionson the Screen appear as blue (Black?) rectangles

Choose the top line: 1:Automatic Cut

PressSHIFT andChoose 2: Auto Plunge, 3: Follow Cutand 4: Retract. (4 lines selected)

Choose Delete, and accept Confirm deletionin the Confirmbox Exit the Customizebox with an OK

The Customizedialog lists the CurrentTool Motionsthat have been created.These consist of the original toolmotion, plus the customized toolmotion that ordered the regions to becut. Now you will learn how to delete

the paths you do not want to keep.

8. Repaint the screen and play the tool path.

Away they go...


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Select the region which lies at the bottom of the pocket which is farthest to the left of the part

Select the middle region

Choose Done/ReturnChoose Done cut


10. Play the cut.

Choose Play Path

the rectangles indicate Regions

This one...It will pre-highlight in

green(?)and then gets dark when

selected

Then this one...You will notice that

you do not have to select the last

region...the system assumes that it

is last.


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MULTIPLE CUTS

When you generated the tool path in the last section and optimized the regions, you may havenoticed that the cut angle used to machine down into the pockets did not really generate the

most effective path. You are going to fix this problem in this Demonstration. Create two CutMotionsfor the tool path you worked with in the previous section. You can then change theCUT_ANGLEfor the regions in both Cut Motionsto a more efficient angle and adjust how

much the tool cuts in each motion. The NC Sequenceis provided for you in the manufacturingfile.

1. Reopenthe manufacturing part: vol6.asm.

2. Activate the existing NC Sequence.

In the Model Tree, right-click on 1. Volume Milling [OP010] and choose Edit definition

In the Menu Manager Choose Play Path. When watching, you will notice that the tool runs Slices

(Yes, no Regions) in a uniform thickness (10 mm) each, all the way from top to bottom of the cavities.In the Menu Manager ChooseCustomize. You will now empty the content in the Tool Manger:

PressSHIFT andchoose 1: Automatic Cut- 3 lines will be selected automatically

Choose Delete, and accept Confirm Deletionin the Confirmbox - The box is now completely

empty and if you ran Play Pathnothing would happen...

PresstheInsertbutton

In the Menu Manager ChooseFrom-To-Depth :- You are about to create the first of two cuttingmotions, each in their own seperate height range.

Choose Done

Choose From Depth Choose Specify Plane

Rightclick, maybe repeatedly, until you pick the top surface of the part (Feature 6on

the workpiece) as shown below. Accept by left-clicking.

11. Return to the main menu, close and erase all files.


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Choose To Depth

Choose Z Depth

In the Enter Heightbox type -20and hit ENTER-A Datum plane appears in the specified level

to display the Tool Path depth

Choose Parameters

In the Edit Parametersbox, locate the Cut Angleentry and change it from 0 degreesto

45 degrees- Leave the box with an OK - 45 degrees is not optimal, but is chosen here for clarity In the Menu Manager,Choose Done Cut


RunPlay Pathto study the new tool motion

Now you will define the second, lower level Tool Motion :

Choose Customize

Press the Insertbutton

In the Menu Manager ChooseFrom-To-Depth

Choose Done Choose From Depth

Choose Z Depth

In theEnter Heightbox type -20and hit ENTERChoose To Depth

On the Model, choose the TDM2_TOPDatum plane (in the bottom of the model)- Yes,this Z-depth is more than enough...

The new Tool Pathwill now get its own unique parameters:

In the Menu ManagerChooseParameters

In the Edit Parametersbox, change the Step Depthfrom 10mm to 2mm and the Cut

Anglefrom 0degrees to 90degrees - Leave the box with an OK In the Menu Manager Choose Done Cut


The first 20 mm from the top and

downwards have been milled. The

parameters of this tool motioncan

be adjusted via the Model Treeat a

later time

The two Tool Motionsare easily

distinguished from each other


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You have now created an optimized and efficient tool path. In a later Lesson, you will learn how to use moreCustomizeoptions to specify even more control over a tool path.

11. Return to the main menu and close and erase all files.

End of demonstration

Machine the pocket areas of the aircraft door bracket shown below.

1.openthe manufacturing model called: vol7.asm

2. Skip ahead to where you can play the path using the default scan type of TYPE_1.


In the Menu Manager Choose Play Path.

3. Zoom up on the left end of the part.

4. Play the path.


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Which is the more efficient path?

7. Save the NC Sequenceand return to the MACHININGmenu.

Machine the pocket areas of the aircraft door bracket shown below

Choose Done Seq

8. Zoom up on the other end of the part.

9. Use the other existing volume milling sequence.


10. Play the path.

5. Open the Edit Parametersdialogue and change the scan type to TYPE_SPIRAL

6. Play the path.


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11. Reorderthe regions to remove all of the retracts.

Choose Customize

Choose the Insert action button

ChooseAutomatic Choose Done Choose Build Cut

Choose By Region- Yes, no response...until later

Choose Confirm

Choose Order Regions Select the largest region which lies near the top of the pocket

Select the region which lies at the bottom of the pocket which is farthest to the left of

the part

The system displays the Custom-

ize dialogwith the current tool

motion shown on the list. You will

create a new tool motion and then

delete the one shown.


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12. Play the cut.

Choose Play Cut

Select the region at the bottom of the upper right pocket

Choose Done Choose Done/Return Choose Done Cut

The system now displays the

Customizedialog with all the tool

motions listed. You want to keep

only the optimized tool motion you

just created....


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CAM Tutorial WF 5 week 2 Part 4

13. Delete the tool motionyou do not want and exit out of the Customizedialog.

Highlight the first four numbered items on the list as shown by holding down the CTRLkey on the keyboard and selecting each item with the mouse cursor

Choose the Deleteaction button

ChooseYes

to confirm the deletion Choose OKfrom the Customize dialog

Play the Tool Path

ATTENTION

The final step of the above exercise must be REVIEWEDandAPPROVEDby yourINSTRUCTORto make you eligible for a signature on your approval sheet confirming your

successful completion of this tutorial.


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Revised by Tomas Benzon DTU MAN july 2011 on basis of original COACH material Page 26

PART 5: TRAJECTORY MILLINGMachine the assembly fixture shown below using Trajectory Milling. You need to utilize a

standard tool and a sketched tool.

2. Create a new Sequenceto machine the two large corner cuts with a large shell (insert) cutter.

On the top ribbon choose The Millpane / TrajectoryChoose the Toolicon in the leftside of the top ribbon -The Tools Setupbox appears

3. Define a 100mm diameter by 50mm high Mil lingtool.-Not End millas this will not work..

Enter the Tool values and close the Tools Setupbox with an OK -The Edit Parameterbox now appears

4. Retrievethe parameters:

Choose theParameterpaneIn the lower right cornerchoosethe Edit Parametersicon-The familiar Edit Parametersdialog appears.Choose File / Open, and locate the traj1_shell.miland ignore the warnings by choosingClose.

Close the Parameterbox with an OK

5. Make the Retract Plane 25mm along the Z Axis. Choose theClearancepane For Reference, choose the top surface of the workpiece Type 25 forvalue(= distance).-The system now wants you to proceed to the Tool Motionspane

6. Define the first boundary for machining.

1.open the manufacturing model: traj1.asm.


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The system now displays the Tool

Motionsdialog. You will notice that there

are no existing tool paths...

The Curve Cutdialogue appears. The

Trajectory Curve action box is ready for

input...

Choose theCurve Cut

action button

Select the edge as indicated

Choose the (upper) Detailsbutton to customize the cutparameters

The system now displays an arrow onthe boundary to show you the direc-tion in which it intends to machine theedge....


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The (upper) DetailsButton...

Not this...

Lead-in...

Options...

Flip...

Lead-out...

Select the edge as indicated

In the Chaindialogue,Accept the Standard Referencesand click the Optionstab

Enter a Lead-inand Lead-out value of 75to force the tool to

begin the cut slightly offset fromthe workpiece

Choose Flipto force the tool tobegin the cut from the left side(viewport relative)

Choose OKto close the Chaindialog

Choose the OffsetCut andMaterial To Remove action

buttonsto ensure that the tool

performs the cut correctly offsetfrom the workpiece. The offsetdirection is to be awayfrom themodel


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The modified curve trajectory...

New content in the

Tool Motionsbox

In order to fil in the the TrajectoryCurveaction box, select the edge asindicated-Yes, this is a repetition from before

Accept the Curve Trajectory Setup by clickingChoose OKto accept the Tool

Choose Play Pathand ScreenPlayto review the cut

In the Model Tree,right-click 1. Trajectory [OP010]

and choose Edit Definition

Choose the Tool Motionspane

Choose the Curve Cutaction button

7. Create another Sequenceto machine the other corner cut.


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The system completes the

second cut sequence and

displays the combined tool

paths

The modified curve trajectory...

In the Curve Cut dialogue click the (upper) Detailsbutton In the Chaindialogue,click the Optionstab Enter a Lead-inand Lead-outvalue of 75, similar to the first cut

Flipthe direction of the cut to force the tool to start the cut from the left Choose OKto close the dialog

Choose the OffsetCut andMaterial To Remove action like beforeClose the Curve Trajectory Setup dialog with the Yesbutton

8. Create another Sequenceto machine the groove which runs down the interior of the top faceof the part. In this case, you are going to use a sketched tool.

On the top ribbon choose Mill / Trajectory Milling -The Trajectory Dashboardappears...

Choose the Tool icon-The Tools Setupbox appears

9. Create a Sketched Toolto match the shape of the groove.

In the Tools Setupdialog start a new tool of the MillingType - Not End Mill

In the Tools Setupdialog, choose Edit Choose Sketchfrom the Editdrop down menu

Choose the Sketcheraction button in the Tools Setupdialog In the Sketcherwindow which displays, draw a Sketchwith these dimensions:

Choose OK to close theTool Dashboard (theTrajectory pane)

Choose Play Path


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Choose theParameterpaneIn the lower right cornerchoosethe Edit Parametersicon

Choose File / Open, and locate the traj1_shell.miland ignore the warnings by choosingClose.

Close the Parameterbox with an OK

10. Retrievethe parameters:

Dont forget the Centerline...

Choose theApplybutton in

the Tools Setupbox -The newtool will now be added to the tool list

in the left side of the box

Close the box with an OK-The new tool will now be the active

one.

When the sketch is correct,save and close it the normal way-The Sketchercloses


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Choose the Tool Motions pane / Curve Cut

In the Curve Cut dialogue, choose the upper Detailsbutton

In the Chain dialogue, under References, choose Rule-based, and verify that Ruleisset to Tangent

Select one of the bottom edges

in the curved channel as shown

11. Define theTool Motions

The System auto-selects the

whole bottom curve due to

the Tangent Rule setup...

Stillin the Chainbox, now choose the OptionsPane Enter a Lead-in andLead-out value of50 mm Check that the tool (the arrow) is running from right to left - use the Flipbutton if not

Choose OKto close the ChaindialogSince you are going to drive the cutter down the center of the slot, there is no offset required.

Choose to close the Curve Cutdialogprovided your trajectory matches the illustration

below


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ATTENTION

The final step of the above exercise must be REVIEWED and APPROVED by your

Close the Trajectory Dashboard with the Yesbutton

12. Use the CL Dataoption to play the entire Operation.

On the Model Tree locateOP010 [MACH01], rightclick it and choose Play Path-Thiswill play the whole operation in one continous motion

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