Dieology LLC

Art Hedrick

Contributing Writer
Dieology LLC
8579 River Oak Circle
Greenville, MI 48838


Phone: 616-225-2170
www.dieology.com
Contact via email
Author of the "Die Science" column in STAMPING Journal®, Art also has written technical articles on stamping die design and build for a number of trade publications. A recipient of many training awards, he is active in metal stamping training and consulting worldwide.

Regaining flatness in stamped parts

December 7, 2004

By:

Of all the geometric tolerances that are difficult to achieve, flatness is one of the hardest. Most stampers probably would much rather try to make a complex-shaped, thin, high-strength steel deep-drawn part than hold a small-tolerance part requiring a tight flatness.Achieving part flatness is a...

Continue Reading

Successful stamping: It's a 'we' thing

November 9, 2004

By:

As a consultant and educator, I travel to numerous die shops and stamping plants, and almost all of them have the same basic request:"Can you show these tooling guys how to make the dies run better?"I hear comments like "We sure have a lot of downtime and scrap, not to mention the usual problems...

Continue Reading

Using forming assessment tools to make wise die-buying decisions

October 12, 2004

By:

Establishing a good buying procedure is a critical aspect of the tool purchasing process. All too often tool supplier expectations are not communicated and executed effectively. Miscommunication can cause you to purchase a die that doesn't produce good parts, needs constant attention, wears out prematurely, or has other problems.

Continue Reading

Tackling cutting and piercing problems in stamping operations

August 10, 2004

By:

Figure 1Poor cutting section designCutting problems, such as die sections breaking, slugs jamming and pulling, and burrs, are common stamping challenges. Many of these problems are caused by poor die design. Others are caused by poor maintenance techniques, improper setup, and poor scrap...

Continue Reading

Sink-making secrets

June 8, 2004

By:

Figure 1Double drawn stainless steel sinkSink photo courtesy of Polarware.Have you ever looked at a deep-drawn double-bowl sink and wondered how it's made? After all, one deep-drawn shell is right next to the other. Where does the metal come from to achieve the height?Figure 1shows a classic...

Continue Reading

Eliminating slug pulling during piercing operations

May 4, 2004

By:

Author's Note: Before I get into the meat of this article, I would like to let my readers know how much I appreciate their loyalty to STAMPING Journal® and the Die Science column.STAMPING Journalnow is published monthly, and I am delighted to announce that I will be writing the Die Science...

Continue Reading

Pitch notch or not? Factors to consider when designing progressive dies

April 6, 2004

By:

Figure 1In today's competitive global market, stampers are looking for ways to reduce tooling and stamping cost by any means possible. Pitch notches, often referred to as French notches, are used commonly to prevent overfeeding and mis-hits in progressive dies. More often than not, however, using a...

Continue Reading

Selecting a stamping die pressure system, Part II

February 12, 2004

By:

Selecting a stamping die's pressure system can be a critical decision. Many questions must be answered to determine what type of pressure system best suits your application. This article is Part II of a two-part series that focuses on the different systems available, as well as the advantages and...

Continue Reading

Selecting a stamping die pressure system, Part I

December 11, 2003

By:

This article is part one of a two-part series that focuses on the different stamping die pressure systems available, as well as the advantages and disadvantages of each. The article also discusses some of the controlling factors that contribute to system selection.

Continue Reading

Controlling bend angles

October 9, 2003

By:

Bend angles are among the most frustrating geometric features to control in metal stamping. This is due primarily to two factors – the inconsistency of the mechanical properties in the metal being bent and the die design.

Continue Reading

Die geometry for embossing and stretching

August 28, 2003

By:

Stretching or embossing, not to be confused with drawing, is the process in which the part's geometry is obtained by stretching the metal into a forming cavity.

Continue Reading

Toolmaker tricks

August 14, 2003

By:

It is not unusual for me to perform a few magic tricks when holding a conference on stamping die drawing, troubleshooting, or processing. Later on, I may disclose the magicbehind the trick. I do this for a couple of reasons: first, to entertain the conference attendees, and second, to show them that there is no such thing as magic, only physics.

Continue Reading

Designing high-strength steel stamped parts for formability

June 12, 2003

By:

The use of high-strength steel to manufacture automobiles and other transportation vehicles has increased dramatically. The material's strength allows manufacturers to reduce vehicle weight substantially and increase fuel efficiency, without sacrificing performance.

Continue Reading

Establishing a die setup recipe for progressive dies

April 10, 2003

By:

Setting up a stamping die is one of the most critical steps in a successful stamping process. It's a fact: More damage is done to a die, especially a progressive die, in the first 10 hits than in the next 10,000 hits. Most die damage happens during initial setup, when the material is being fed into the die. Mistakes such as misfeeds, pilot piercing, double metal, sheared cutting sections, and stock hang-ups often occur.

Continue Reading

Drawing on the strength of people

April 10, 2003

By:

During the recent economic downturn, sheet metal stampers, die shops, and some job shops experienced layoffs and some closed their doors. However, a few stampers have remained profitable despite uncertain economic times.

Continue Reading