Draw Die Development

2-Day Course

Learn the thought process of how to create a draw development. This course provides the basic rules and concepts needed to understand how to design a draw development for quality stampings. Applications for outer and inner panels, and reinforcements are used to illustrate the effects of tip angle, drawbars, overdraw, etc. Students will work in-groups to determine and evaluate draw developments.


Process, Manufacturing, Tooling and Development Engineers and Tool and Die Makers.


1.0 Overview of Draw Die Development

1.1 Overview of Draw Development Process

1.2 Definition of Terms

2.0 Establishing the Tip Angle

2.1 Tip Angle for Outer Panels

2.2 Tip Angle for Inner Panels

2.3 Unfolding Flanges for Inner and Outer Panels

Exercise: Determining the Tip Angle of an Inner Panel

3.0 Understanding the Addendum

3.1 Introduction

3.2 Punch Opening Line

3.3 Draw-Walls

3.4 Drawbars

3.5 Punch Extensions

3.6 Gainers or Take-Up Beads

3.7 Summary of Addendum Development

Exercise: Determining the Addendum

4.0 Understanding Binder Design

4.1 Understanding Binder Design

4.2 Classification of Binder Shapes

4.3 Blank Shape in a Closed Binder of a Single Action Press

4.4 Blank Shape in a Closed Binder of a Double Action Press

4.5 Details of Drawbeads

Exercise: Evaluating a Draw Development

5.0 Draw Die Development Applications

5.1 Introduction

5.2 Draw Die Development - Hood Outer Example

5.3 Draw Die Development - Trunk Lid Inner Example

5.4 Draw Die Considerations

5.5 General Guidelines

Exercise: Creating a Draw Development

6.0 An Engineering Based Approach to Draw Die Development

6.1 Engineering Perspective of a Draw Die Development

6.2 An Application of the Engineering Approach