Foreword

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This document was prepared by Technical Committee ISO/TC 29, Small tools, Subcommittee SC 8, Tools for pressing and moulding.

This second edition cancels and replaces the first edition (ISO 20929:2018), which has been technically revised.

The main changes are as follows:

change of normative reference cited in Clause 6: ISO 683-1 replacing EN 10083-2;
change of surface roughness symbol;
addition of a text reference into Bibliography.

Any feedback or questions on this document should be directed to the user’s national standards body. A complete listing of these bodies can be found at www.iso.org/members.html.

Introduction

This document was developed using Guideline VDI 3387 “Sliding elements in large stamping dies”.

Heel guidings are used in medium and large stamping and forming dies for guiding the upper die towards the lower die.

The heel guidings offer a simple and affordable guidance system which is widely used in medium and large stamping and forming dies made from casting and steel plate in complement of round guiding pillars and bushes.

Heel guidings are designed to guide the upper and lower die to facilitate tool set-up and try out and to retain the clearance (bending or drawing gap) during the service life.

Unlike round guides, guiding plates can also absorb lateral shear forces, see also Figure 1.

1 Scope

This document specifies dimensions for heel guidings in large stamping and forming dies. It also gives example applications and an example for ordering.

2 Normative references

3 Terms and definitions

4 Example application

5 Dimensions

6 Material

7 Designation

Bibliography

ISO 20929:2025

Tools for pressing. Heel guidings in large stamping and forming dies

Current

Published:

18 Aug 2025

1 Scope