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.

Die building

June 13, 2006

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In any stamping process including progressive dies, transfer dies, or line dies, three factors are essential to consider when processing a piece of flat metal into a finished part: What is the metal? What is the metal's thickness? What are the part tolerances?

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Die Basics 101: Part VIII

June 13, 2006

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Figure 1 Part VII of this series introduced two basic types of metals used to manufacture stamped parts—ferrous, metals that contain iron, and nonferrous, metals that do not contain iron. This article discusses the specific mechanical properties of these metals in more detail.The metal's...

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Defining material specifications

May 9, 2006

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The root cause of splitting problems in deep-drawn parts often is that the process is not designed and engineered to accept the full range of mechanical properties within the ASTM specifications.

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Guidelines for forming high-strength material

April 11, 2006

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High-strength materials are becoming more common in stamping, especially for the aircraft and space industries. Although they all have their own specific features, they have some common characteristics and typical reactions to stretching and drawing.

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Die Basics 101: Part VII

April 11, 2006

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Previous articles in this series focused on stamping dies and production methods. This article discusses stamping materials—both ferrous and nonferrous.To process, design, and build a successful stamping die, it is necessary to fully understand the behavioral characteristics of the specific...

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Die basics 101: Part VI

February 7, 2006

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Previous articles in this series discussed common stamping die components. This article focuses on less common specialty components found only in certain dies, most of which are available from various suppliers.Figure 1Inidie Tapping UnitsImage courtesy of Danly IEM.In-die Tapping UnitsMany dies...

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Die basics 101: Part V

December 13, 2005

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Many specialty components can be used in dies, but the most commonly used are die plates, shoes, die sets, guide pins, bushings, heel blocks, heel plates, screws, dowels, and keys—all of which were explained in Part IV of this series. This article focuses on other common components—pads,...

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Die maintenance. Die repair.

November 8, 2005

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Unnecessary die repair stems from several basic shortcomings, namely poor die design, setup procedures, tool design, and maintenance techniques.

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Die basics 101: Part IV

October 11, 2005

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Stamping dies can comprise many components. This article discusses the basic components, including die plates, shoes, die sets, guide pins, bushings, heel blocks, heel plates, screws, dowels, and keys. This article is one of a 16-part series on the fundamentals of stamping. Descriptions of all the articles in this series, and links to them, can be found at the end of this article.

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Die Basics 101: Part III

August 9, 2005

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Many factors come into play when choosing a production method for stamping. This article discusses and explains the advantages and disadvantages of line dies, transfer dies, and progressive dies. This article is one of a 16-part series on the fundamentals of stamping. Descriptions of all the articles in this series, and links to them, can be found at the end of this article.

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Die Basics 101: Part II

June 14, 2005

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Figure 1EmbossingAll forming operations deform sheet material by exposing it to tension, compression, or both. Most part defects, such as splits and wrinkles, occur in forming operations. Successful sheet metal forming relies heavily on the metal's mechanical properties. The metal being formed must...

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Die Basics 101: Part I

April 11, 2005

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This article is one of a 16-part series on the fundamentals of stamping. Descriptions of all the articles in this series, and links to them, can be found at the end of this article.

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Solving pierce punch breaking and chipping problems

February 8, 2005

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Figure 1Having a pierce or perforating punch chip, or worse yet break, can cause severe die damage. It also can result in nonconforming parts because of burrs or undersize holes. Broken punch pieces can fall into the die and crush pads, as well as forming and cutting sections. This article...

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Listening to your parts

January 11, 2005

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Figure 1Even if the scoring is the reason for the split, that doesn't mean that resolving the galling issue will ensure a robust process.I recently had the chance to engage in some very interesting conversation with the head of the sheet metal formability lab for a very large automotive stamper....

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Cams, cams, and more cams

December 7, 2004

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How do you choose a store-bought cam for your stamping operation? Hundreds of cam designs are available today from numerous suppliers. Choosing the one that best fits your needs, as well as your budget, sometimes can be very confusing.

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