Creo Parametric 2.0: Sheet Metal Design

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Creo Parametric 2.0:

Sheet Metal Design

Creo Parametric 2.0: Sheet Metal Design

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Table of Contents Class Files ...................................................................................... vii Chapter 1 Introduction to Sheet Metal Modeling....................... 1-1

1.1 Sheet Metal Environment................................................ 1-3 1.2 Display of Sheet Metal Parts........................................... 1-4 1.3 Parameters ....................................................................... 1-5 1.4 Orienting a Sheet Metal Part ........................................... 1-6 1.5 Developed Length of Sheet Metal Bends ...................... 1-7 1.6 Designing in Sheetmetal Mode....................................... 1-8

Sheetmetal Mode............................................................... 1-8 Assembly Mode ............................................................... 1-11 Convert Parts................................................................... 1-12

Chapter 2 Primary Walls .............................................................. 2-1 2.1 Primary Walls ................................................................... 2-3

Extruded............................................................................. 2-4 Planar................................................................................. 2-4 Revolved............................................................................ 2-5 Blended.............................................................................. 2-5 Offset ................................................................................. 2-6

2.2 Creating a Primary Extruded Wall .................................. 2-7 Add Bends to Sharp Edges................................................ 2-9

2.3 Capturing Design Intent in Sketcher............................ 2-10 Exercise 2a Primary Extruded Unattached Wall ............... 2-12 Exercise 2b Primary Planar Unattached Wall.................... 2-17 Exercise 2c Primary Extruded Unattached Wall ............... 2-21 Exercise 2d Creating the Project Part................................ 2-24

Chapter 3 Secondary Walls ......................................................... 3-1 3.1 Selecting an Attachment Edge ....................................... 3-3 3.2 Flat Wall ............................................................................ 3-7 3.3 Flange Wall ..................................................................... 3-13 3.4 Twisted Wall ................................................................... 3-22 3.5 Extended Wall ................................................................ 3-26 3.6 Unattached Walls........................................................... 3-28 3.7 Wall Section Reuse ....................................................... 3-31

3.8 Bend Relief .................................................................... 3-32 No Relief.......................................................................... 3-32 Rip Relief ......................................................................... 3-33 Stretch Relief ................................................................... 3-34 Rectangular Relief ........................................................... 3-35 Obround Relief ................................................................ 3-36 Relief on Both Sides ........................................................ 3-37

Exercise 3a Secondary Walls ............................................. 3-38 Exercise 3b Unattached Wall.............................................. 3-45

Creo Parametric 2.0: Sheet Metal Design

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Exercise 3c Flange Walls I.................................................. 3-51 Exercise 3d Flange Walls II................................................. 3-55 Exercise 3e Adding Walls to the Project Part ................... 3-60 Exercise 3f (Optional) Extrude and Reuse ....................... 3-64

Chapter 4 Regular Unbends, Bend Backs, and Cuts................ 4-1 4.1 Unbending Sheet Metal Geometry ................................. 4-3 4.2 Bending Back Unbent Geometry ................................... 4-5 4.3 Solid and Sheet Metal Cuts ............................................ 4-7

Dimension Scheme and Feature Order........................... 4-14 4.4 Creating a Cut Requiring Unbend and BendBack

Features.................................................................................. 4-15 Exercise 4a Creating a Sheet Metal Cut ............................ 4-19 Exercise 4b Projected Curve and a Cut............................. 4-24 Exercise 4c Create a Cut on the Project Part.................... 4-30

Chapter 5 Notches and Punches................................................ 5-1 5.1 Corner Relief .................................................................... 5-3 5.2 Introduction to Notches and Punches........................... 5-9 5.3 Creating Notch and Punch UDFs ................................. 5-11 5.4 Placing Notch or Punch UDFs...................................... 5-17 Exercise 5a Create a Corner Relief .................................... 5-24 Exercise 5b Create a Notch for Bend Relief I.................... 5-31 Exercise 5c Create a Punch Feature.................................. 5-40 Exercise 5d Create a Notch for Bend Relief II................... 5-44

Chapter 6 Bend Features............................................................. 6-1 6.1 Bend Features.................................................................. 6-3

Bend .................................................................................. 6-3

Edge Bend ......................................................................... 6-5 Planar Bend ....................................................................... 6-5

6.2 Creating a Bend Feature ................................................. 6-6 Transition ........................................................................... 6-6 Bend Relief ........................................................................ 6-6

6.3 Position of the Bend Line.............................................. 6-15 6.4 Bend Line Adjustment................................................... 6-18 6.5 Bend Line Notes............................................................. 6-21

Bend Note Orientation ..................................................... 6-23 Best Practices for Bend Features .................................... 6-24

Exercise 6a Bend Flat Geometry ........................................ 6-25 Exercise 6b Create a Bend Line Adjustment..................... 6-42

Chapter 7 Unbending Complex Geometry ................................. 7-1 7.1 Ruled and Non-Ruled Geometry..................................... 7-3

Ruled Geometry................................................................. 7-3 Non-Ruled Geometry ......................................................... 7-4

7.2 Unbending Non-ruled Geometry .................................... 7-5 7.3 Split Area Feature ............................................................ 7-7 7.4 Cross Section Driven Unbends ...................................... 7-8 7.5 Rip Features ................................................................... 7-10

Creo Parametric 2.0: Sheet Metal Design

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Sketch Rip........................................................................ 7-10 Edge Rip .......................................................................... 7-11 Surface Rip ...................................................................... 7-11 Rip Connect ..................................................................... 7-12

Exercise 7a Deform Surfaces ............................................. 7-13 Exercise 7b Cross-Section Driven Unbend....................... 7-16 Exercise 7c Rip Features and Deformation Control ......... 7-21 Exercise 7d Split Area Feature ........................................... 7-26

Chapter 8 Sheet Metal Forms...................................................... 8-1 8.1 Introduction to Form Features........................................ 8-3

Die...................................................................................... 8-3 Punch................................................................................. 8-3

8.2 Placing a Punch Form Feature ....................................... 8-5 8.3 Placing a Die Form Feature............................................. 8-9

Bending............................................................................ 8-15 8.4 Flattening Form Geometry ............................................ 8-16 8.5 Unstamp Edges Feature................................................ 8-18

8.6 Form Feature Restrictions............................................ 8-20 Exercise 8a Punch Form..................................................... 8-21 Exercise 8b Die Form .......................................................... 8-26 Exercise 8c Flatten Form Geometry .................................. 8-38

Chapter 9 Documenting a Sheet Metal Part............................... 9-1 9.1 Flat States ........................................................................ 9-3 9.2 Creating Flat States......................................................... 9-5 9.3 Opening Flat State Instances ......................................... 9-9 9.4 Adding a Flat State Instance to a Drawing.................. 9-10 9.5 Documenting the Bend Order ...................................... 9-13 Exercise 9a Sheet Metal Drawing....................................... 9-17 Exercise 9b Project Drawing .............................................. 9-32

Chapter 10 Converting Solid Parts........................................... 10-1 10.1 Converting Solid Parts.................................................. 10-3

Driving Surface ................................................................ 10-4 Shell................................................................................. 10-4

10.2 Conversion Feature....................................................... 10-6 Edge Rip.......................................................................... 10-7 Rip Connect..................................................................... 10-8 Edge Bends ..................................................................... 10-9 Corner Relief ................................................................... 10-9

Exercise 10a Convert a Solid Part.................................... 10-11 Exercise 10b Conversion Feature ................................... 10-17

Chapter 11 Sheet Metal Setup................................................... 11-1 11.1 Calculating the Developed Length............................... 11-3 11.2 Y-Factor and the Default Formula................................ 11-4 11.3 Bend Tables ................................................................... 11-6 11.4 Sheet Metal Parameters and Relations ..................... 11-10 11.5 Default Fixed Geometry .............................................. 11-15

Creo Parametric 2.0: Sheet Metal Design

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Exercise 11a Calculate Developed Length...................... 11-16 Exercise 11b Sheet Metal Parameters and Relations..... 11-23

Chapter 12 Investigating a Sheet Metal Part ........................... 12-1 12.1 Investigation Tools........................................................ 12-3

12.2 Sheet Metal Reports ...................................................... 12-5 Text Reports .................................................................... 12-8

12.3 Design Rules .................................................................. 12-9 Design Check................................................................. 12-10

Exercise 12a Use Information Tools ................................ 12-11 Appendix A Additional Exercises .............................................. A-1

Exercise A1 Create a Revolved Wall ................................... A-3 Exercise A2 Create an Offset Wall ...................................... A-5