04 advanced mold tooling go!2008

8/3/2019 04 Advanced Mold Tooling GO!2008

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© 2008. Siemens Product Lifecycle Management Software Inc. All rights reserved

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Advanced SE Mold ToolingDoug Stainbrook / Solid Edge Field Support




Siemens PLM Software

Advanced General Topics

Part Orientation

Using Faces & Edges

Creating Ref. Planes

Automatic Parting Split

When, and When Not, to use? Vertical Faces

How are they sorted?

Symmetry Molds

Workaround for Adding Components

Workflow for Placing Cooling Components

Three Plate Molds and Different Injection Plane How to Create a Single Slide on a Multi Cavity Mold





Part Orientation

User Can Select Edge and Part Faces to Align with a Specific

Coordinate Direction

In this case, the user selects near the end of the edge that they

wish to align in the Positive ³X´ Direction

Selecting a Part Face aligns its Normal to the Selected Positive

Plane Direction





Part Orientation

What about a case where there is NO planer face or part edge normal

to the Direction of Pull?

IPA into the Plastic Part

Create Necessary Constructions

to Add a Ref. Plane Normal to theDirection of Pull

Plane Normal to

Direction of Pull





Part Orientation

Use New Ref. Plane to Orient the Part in Z Direction

Part is Now Oriented

to Pull Direction

Pick the Pull Direction

Ref. Plane to Align

Normal to Positive Z





Optional Automatic Parting Split

Users Should Enable this when there are large cross-over faces that

need to be split

Automatic Split Line





Optional Automatic Parting Split

The user should disable this option if the split line is along an obvious

edge

This option may introduce very small sliver faces in areas where the

model may have slight imperfections

(slight cross-over faces)

Obvious

Split Line





Vertical Face Sorting

Vertical Faces Attached to ONLY Injection OR Ejection Faces are

Automatically Sorted to Adjacent Face Side

Vertical Faces Attached to BOTH Injection AND Ejection Faces are Set

to Injection Side

Vertical Face Adjacent to BOTH

Injection & Ejection Faces

Will be Sorted to Injection Side

Vertical Face Adjacent to ONLY

Ejection Faces. Will be Sorted to

Ejection Side





Part Orientation

DEMO





Ejection

Parts and Runner Being Ejected from the Mold





Symmetry Molds

Common in the Automotive Industry

Same Plastic Part for the Left Hand driven cars and the Right Hand

driven cars

Avoids duplication of the same work

Create the complete core/cavity inserts for one side only Mold Tooling Pattern command

create the mirrored counterpart

for the other side





Symmetry Molds

Start By Creating a C ore/ C avity Insert Mold for a single part

Keep in mind, it will be patterned later and use a runner bar for the

injection

Do Not Apply Rounds on the Corners

XY Dimension Step > Options > Tool's vertical fillet radius: 0 mm

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Note: As a general rule for mirror patterns, you should always save the

project before creating a pattern

including mirrored occurrences





Symmetry Molds

In the Pattern Ribbon Bar, Select Edit Pattern Occurrence Icon

Pick the Coordinate Systems for the Symmetric Occurrences





Symmetry Molds

Select the Symmetry Option by setting the Symmetry

About the X or Y Direction

Note: The coordinate system for the

selected occurrences do not reflect

symmetry, but rotation and translation only





Symmetry Molds

User Will Finish the Mold Design by Creating the Parting Zone and

Adding a Mold Base

Note: Save the project now.It is important to save the

project before creating

components which are local

to a mirrored pattern, like the

parting zone pattern, and

which need to be trimmed by

the parting surface.





Symmetry Molds ± Adding Components

Create a Sketch for Ejector Pin Placement Like Usual on the Pattern

Reference Set

The best way to create a component placement sketch is always to

create them parallel to one of the reference planes, as they never

change






Copy the sketch into the first PartingZone assembly and hide the

Original Top Level Sketch to avoid selecting the wrong sketch during

ejector pin placement

Note the Sketch Pattern will only

Appear Over the non-Symmetric Parts






Place the Standard Ejector Pin Relative to the Sketch

Preview will ONLY show the Ej Pins on the Original Plastic Parts and

Not the Symmetric Instances






Selecting Finish will Copy the Mirrored Components to the Symmetric

Instances

The pins in the mirrored location are trimmed by the parting surface






Note: There is a problem, when deleting components, which are local

to a mirrored pattern in V20

The instances created on the mirrored pattern occurrence don't get

deleted and need to be removed manually from the Solid Edge

Assembly Pathfinder

Holes in the plates are removed correctly





Symmetry Molds

DEMO





Adding Components

Ejector Pins being put into the Mold





Placing Cooling Components

Select Cooling Component

from the Mold Components

In Placement Step Select

X or Y Position

Use Cylindrical Face Filter

Select the Cylindrical

Face of the CoolingChannel to Apply

the Component Too






Next Select the Z Position

Select the Edge of the Cooling Channel to Select the Center of the

Circle






For Multi-Cavity Tools Transfer the Components to the Reference

Pattern Assembly






Core Cavity Set with

Cooling components in place





Three Plate Molds

Used when it is desirable to directly gate into the top of a part ±

especially for round parts

Used when traditional runners and gates are not feasible

When there are slides on both sides of a part

When there are high

volumes of core/cavity sets





Three Plate Molds

Select Three Plate Mold Base from standards





Three Plate Molds

Injection Channel Parting surface will be automatically projected and

created between the 3rd Plate and the Cavity Plate

In the case of a Trapezoid, Arcoid or semi-circle runner, it will only be

cut into the Cavity Plate

Top Clamp PlateTop Clamp Plate

3rd Plate3rd Plate

Cavity PlateCavity Plate

Core PlateCore Plate

Top Clamp Plate

3rd Plate

Cavity Plate

Core Plate





Three Plate Molds - Gating

The gate will cut the Cavity Plate (Stripper Plate) and the Cavity Block

based on the Gate Options entries

Measuring distance will

be required to determine

the Gate and Connector

Heights






In the Gate creation steps, the user must select ALL of the gate

locations as they are not instanced like in a traditional mold






³Sucker ́ Pins are Sometimes Used To Break the Gate from the Part

and to Pull the Gate Drop out of the Mold





Three Plate Molds

Shoulder Bolts and Die

Springs are used to control

the Mold Action and

Sequence of Mold Opening





1st Split

2nd Split

3rd Split

Sucker PinGate Compressed

Die SpringRunner Drop

Three Plate Molds

Support PlateSupport Plate


Stripper PlateStripper Plate

Stripper Fixing PlateStripper Fixing Plate

Injection

Clamp Plate

Injection

Clamp Plate





Three Plate Molds

The 1st split is forced at moldopening by the die spring

This breaks the Gate from thepart and Sucker Pin pulls theRunner Drop out of the plate





Injection

Clamp Plate

Injection

Clamp Plate





Three Plate Molds

When the Blue Shoulder Bolt

bottoms out at 3.50´, it forces the

2nd and/or 3rd Split to occur.

The 2nd Split pulls the Sucker Pin

out of the Runner Drop and allows

the Runner to fall away





Injection

Clamp Plate

Injection

Clamp Plate





Three Plate Molds

The 3rd Split allows the

Core/Cavity to open, pulling the

slides out of the parts, and

enabling the parts to be ejected

The Yellow and Green Shoulder

Bolts bottom out to ensure that all

three splits occur at the maximum

mold opening





InjectionClamp PlateInjectionClamp Plate





Three Plate Molds

Part and Injection Channel from a Three Plate Mold

4 Injection Points





Single Slide on a Multi Cavity Mold


Add First Part and Perform Linear Move to Position Part

off center in the Mold Project






DO NOT add Second Plastic Part

through Mold Tooling ³ Add Part´

Command

Create a NEW Part File

Insert Part Copy of the Same Part Scale with the same Shrink Factor

Save with a Unique Name






Position New Part using Normal Assembly Relationships

Create Slide In Place that Creates the Holes for Both Parts

Original

Part

Second Part(Scaled Part Copy)

Slide Covering

Both Parts






Use the second part as a "slide" of the first together with the actual

slide






Two parts and the single slides are fused together and treated as a

single part with a single parting loop






Each Slide makes the 2 Parts Shown Sitting on Top of Each of the Four

Slides





Advanced PARTING SURFACE Topics

If Features Fail«. Then What?

Adding 2 Vectors to a Vertex

Resolution of collinear vectors

Vector Rotation

Adding Inclusion

Small Offset vs. Large Offset for Loop Filling

Multiple or Single loop filling





If Features Fail«. Then What?

There is a website dedicated to SE Mold Tooling customers and

partners which is a great resource for all things Mold Tooling

http://www.semoldtooling.com

Click HERE

to open a Page

For Specific Failed

Features and PossibleSolutions





Adding 2 Vectors

Adding 2 Vectors to Yellow Vertices can be used to Eliminate Twist in

the Parting Surface

Make it more Manufacturable

TwistingSurface

Twisting

Surface





Adding 2 Vectors

Select Vertices Step in Parting Zone Edition command

Select the Vertex to Change to 2 Vectors

Select Preview

Reset Angle For Both Vectors





Adding 2 Vectors

Remember ± Outer Loop is Calculated Counterclockwise

Determine Vector Number to Corresponding Angles Using Top View

Vector 1Vector 2

V e c t o r 2

V e c t o r 1

0.00°-180.00°

9 0

. 0 0 °

9 0

. 0 0 °





Adding 2 Vectors

Result is a More Easily Manufacturable Part

TwistingSurface

TwistingSurface

Single Vectors Two Vectors





Resolution of Collinear Vectors

Collinear Vectors are Often the Cause of a Failed Parting Surface ±

Cannot Loft When Two sets of Vertices are Collinear






2 Methods to Resolve This Issue

Change One Vector Angle Slightly

Create an Inclusion

By Inclusion

If an Adjacent Vertices are in the same Plane as the Collinear Vector,

the User May Create an Inclusion Creates a Triangular Planer Patch






Change One Vector Angle Slightly





2 Vectors and Collinear Vectors

DEMO





Single Offset vs. Multiple Offset

Loop Filling

Single Offset

Create a single offset surface from the parting line of the part until the

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Loop Filling

Advantage of a Single Offset Surface is Less Solid Edge Features and

Less Complex

Disadvantage is that it is not always possible to have a Single Offset

Surface due to Parting Line Complexity (Concavity)

To Achieve a Single Offset, User Selects a Very Large Ex trusion Offset

for the Outside Loops on the Parting Surfaces tab in the Mold Tooling Options dialog

Value is 250 mm (or 10 in)

by Default






Loop Filling

User May Make the Offset Even Larger

Internally, Mold Tooling will find the minimum offset value for the

offset surfaces to cut completely the core/cavity blocks and use this, if

the preferred value is too Large

This Avoids unnecessary offset vector intersections during the

surface creation






Loop Filling

The filling type for this single offset surface is defined by the Start Loop

Filling Type for the Outside Loops and should be either Loft or Sweep

The E nd Loops Filling Type will not be used in the single offset surface

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Loop Filling

The V erte x Ex trusion Type is independent of the single or multiple

surfaces approach and will always create either one or two vectors on

vertices which connect two discontinuous edges on the parting line

The U se Projection for Loft option will determine, if the single surface

will be

extruded without any tiltor whether the end points

of each offset vector will

be projected on a plane

(Z C onst)

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Loop Filling

Multiple Offset

Create multiple offset surfaces to start from a complex parting line, to a

planar parting surface, leaving the block or plate with an intermediate

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Loop Filling

Advantage of the Multiple Surface approach is that the User will always

end up with a planar parting surface in the corners, where typically the

leader pins and bushings are placed in case of an integer plate mold

Disadvantage is Creates more Solid Edge features

Project will be ³Heavier ́






Loop Filling

In order to get multiple offset surfaces, you need to change the

Ex trusion Offset value for the Outside Loops to a small value

Value must be smaller than the minimum distance between the parting

line and the bounds

of the insert block or

plate

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Loop Filling

It is important to define both the Start Loop Filling Type and the E nd

Loop Filling Type

E nd Loop Filling Type should always be Z C onst\

Any other value does not make much sense and is ignored by Mold

Tooling Theimage cannotbe displayed.Your computer may nothaveenough memory toopen theimage,or the imagemay havebeen corrupted. Restartyour computer,and then open thefileagain.If thered x stillappears,you may havetodeletethe imageand then insertit again.Theimage cannotbe displayed.Your computer may nothaveenough memory toopen theimage,or the imagemay havebeen corrupted. Restartyour computer,and then open thefileagain.If thered x stillappears,you may havetodeletethe imageand then insertit again.






Loop Filling

The Start Loop Filling Type defines

how the first offset will be created

Sweep or Loft

The second offset is a transition

offset, which tries to join the first

offset surface to the end offsetsurface, which is typically a plane

The filling type for that loop filling will be inherited from the start loop

filling, but with the projection option checked

In the example above, the second offset surface would be a Sweep

with Projection on Z C

onst






Loop Filling

The offset for this transition step is determined by two preferences in

the General group on the Parting Surfaces tab of the Mold Tooling

Options dialog

Fill To Z C onst Minimum Offset

Defines the minimum offset to be used for this loop filling

Fill to Z C onst Minimum Angle Defines the minimum draft angle to be used for the projection

Mold Tooling computes the final offset used at all vertices of the

second loop to be not smaller than the minimum offset value and the

draft angle not smaller than the minimum angle






Loop Filling

After this transition surface, a planar surface will be created until the

bounds of the block/plate

There will never be more than three sub-fillings in a parting surface





Advanced PARTING SURFACE Topics

Where to Add Manual Features ± Manual Patch Fillings

Workflow for Creating a Manual Parting Surface

From Scratch

Copy Surface - Drop Parents

Loft Filling ±VS- Sweep Filling





Manual Patch Fillings

In Many Cases a Patch made by a Surface Boundary Does Not Give

the Correct Result

For Contoured Faces

For Cutout Features That Span Multiple Faces

Incorrect Result

Difficult to Manufacture






User should Select the Loop and Change the Filling Type to N one

Select Preview to Remove the Patch Filling Type






A Good Workflow is to Copy Part Surfaces

Remove External Boundaries

Ensures the ³patching surface´ exactly matches the adjacent faces






When Creating Surfaces for Fillings

by Selection, the User MUST place

the features to be used for the fillings

in the correct order in the

Feature Tree

Use ³Go To´ Functionality Directly after the Derived Curve

Features corresponding to the loops

Derived Curve Features Do Not

Change during the Joint Plane edition






Trim the Surfaces Against Each Other

Stitch the Surfaces Together

Trim the Stitched Surface To the Internal Loop Boundary

Make a Copy of the Trimmed Surface to be Used for

Selection Filling






Next the User Can Assign the Manual Surface to the Loop using

Selection Filling Type

Manual

Features






The End Result is a Perfect Surface Match to The Adjacent Surfaces

Patch Filling Selection Filling

(Manual Patch Filling)






Another Example of Where a Patch Filling Type Creates a

Bad Result > Non-Manufacturable Surface






Corrected by Manually Creating Surfaces and Using Selection Filling

Type for the Loop

Splitting Faces May beNecessary to Create the

Desired Loop

Splitting Faces Must Always

be Done in the PlasticPart

Document

Then Synchronize the

PlasticPart Object in MT






In this Case There are Several Loops Lying on the Same Surfaces

Patch Filling is Giving a Bad Result

User Should Reset Loops to Filling Type N one > Preview






Using Similar Workflow as Previously Described, the User can Use

Copy Surface, Trim, and Stitch Functionality to Create the Manual

Patching Surface






In a Case of Several Loops Lying on the Same Surface, it is not

necessary to Trim the Copied Surfaces by the Loops to Create

Individual Patches






Select ALL of these Internal Loops and Change their Fill Style to

Selection

Select the Single Stitched Surface as the Fill Surface





Manual Patch Fillings - DEMO

Demonstration





Manual Parting Surface

There are situations, where the automatic parting surface created by

Mold Tooling might be hard to manufacture, or the existing functionality

does not allow creating the desired result

Also There May Be Users That Are Not Yet Familiar With Solid Edge

Mold Tooling Parting Zone Edition Commands, Yet Are Very Confident

and Competent With Solid Edge Surfacing Functionality The Manual Edition Enables the User to Create Their Own Parting

Surface From Scratch and/or Reuse Any Parting Surfaces Created by

Mold Tooling





Manual Parting Surface ± From Scratch

First Add the Plastic Part to the Project and Orient it

Run the Parting Zone Command and Add X-Y Dimensions and

Thickness

It is Important to Check/Edit the Face Sorting to Get a Valid Parting

Loop and a Single Injection and Single Ejection Shell






It is Not Important That the User has a Valid Parting Surface as it Will

Be Removed When the Manual Edition is Invoked

From the Mold Tooling PathFinder the User can RMB Click on

PartingZone1 and Select Manual Edit






From the Manual Parting Surface Ribbon Bar The User Will Select the

Manual Parting Surface Creation Icon

The Following Warning Will Appear

Click Yes to Continue with Manual Parting Zone Creation






By Automatically Removing All of These Mold Tooling Features

BEFORE Adding any Manual Surfaces, the User Can Avoid Creating

Surfaces Associative to Mold Tooling Features that will be Removed

Avoids Failed Features When Switching to Manual Edit






This will Remove All of the Parting Zone Features Back to the Parting

Loop Creating By Mold Tooling






The Failed Features Shown Below WILL ONLY Occur

IF a Core/Cavity Block had been Created with the Original Automatic

Parting Surface

DO NOT DELETE THE FAILED

FEATURES

Use ³Go To´ to Navigate Just Below

the Derived Curve Feature

To Avoid Failed Features, Change the

Outer Loop to Filling Type to N one in

the Preferences Before Creating theInitial Parting Zone






Using Solid Edge Surfacing the User Can Create the ³Outer ́ Surfaces

User can use the Injection or Ejection

Part Prints and/or the Parting Loop to

Trim the Manual Surface






User Must Stitch All of the Manual Surfaces Together and Then Make a

Copied Surface of the New Stitched Body(Renamed InjectionManual and EjectionManual

in this example)






Next the User Needs to Stitch the Injection Part Print with the

InjectionManual Surface(Renamed InjectionPartingSurface)

Now the User Needs to Stitch the

Ejection Part Print with the

EjectionManual Surface(Renamed EjectionPartingSurface)

Note: Renaming Features is NOT

Required, But is useful to Identify

Their Mold Side






It is Very Important to Be Sure the Final Stitched Surfaces Do Not Have

Any Internal Loops

Use Show Non-Stitched Edges Functionality to Detect Internal Edges






The User May wish to Reduce the Solid Edge Features and so Can

Use the Drop Parents Functionality on the Final Stitched Surfaces and

Delete Parent Features(InjectionPartingSurface and EjectionPartingSurface features)






The Final Stitched Features Must Be Shown Before Re-entering the

Manual Edit Command

Finally the User Can Re-Enter the Manual Edit Command for the

Parting Surface

User Will Select the Injector Parting Zone

and Select the Final Stitched Surface

Corresponding to

This Side

This is Repeated for

the Ejection Side






When the User Selects Finish the Core/Cavity Blocks will be Re-

computed or Created






In Some Cases the User Might Want to Reuse

Surfaces Created Automatically by Mold Tooling

The User Can Copy These Surfaces

Before Selecting Manual Edit

User MUST Drop the Parents of the

CopySurface Features, as the Parentswill disappear when entering the

Manuel Edit of the Parting Zone

Not Dropping Parents will Result in

Failed Features






Now When the User Selects Manual Edit, the Mold Tooling Features

Will Be Removed Back to the Derived Curves

The Copied Surface Will Remain Also

The User Would Continue Creating

Surfaces as in the Previous Example




DEMO

04 advanced mold tooling go!2008

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