Dieology LLC

Art Hedrick

Contributing Writer
Dieology LLC
8730 10 Mile Rd. SE.
Rockford, MI 49341


Phone: 616-894-6855
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.

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

Psychology for the tool room

March 13, 2003

By:

As a consultant for the sheet metal stamping industry, I have had the opportunity to visit numerous stamping plants, die shops, and engineering facilities. One comment I often hear during these adventures is how arrogant or "know-it-all" some of the toolmakers or engineers are.

Continue Reading

Why use sheet hydroforming dies?

February 13, 2003

By:

Most automobile manufacturers have looked for alternatives to the steel traditionally used in car production; hence, the introduction of high-strength steel.

Continue Reading

Grip flow parts

Reducing Negative Tonnage

November 21, 2002

By:

Over time negative tonnage can cause significant press and die damage. Understanding the factors that influence the amount of negative tonnage can help you control it.

Continue Reading

One step forming simulation

Taking advantage of simulation technology

October 24, 2002

By:

One of the most valuable high-tech tools introduced in the last decade has been finite element analysis (FEA) simulation software that stamping tool makers can use to test forming conditions and design dies in the virtual world. This reduces tooling and product design time and saves costs of prototyping and experimentation to find the right design. Training the tool designer or process engineer how to use simulation software can provide a quick ROI and improve the bottom line.

Continue Reading

Aluminum car design figure 1

Deep drawing aluminum—not as hard as it looks

October 10, 2002

By:

Keeping a couple key tips in mind can help you turn aluminum stamping from a source of frustration to a source of income and satisfaction in a hurry.

Continue Reading