Art Hedrick

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.

Stamping | Articles | STAMPING Journal

Developing forming dies

June 12, 2007 | By Art Hedrick

Determining the best die geometry to produce multicontoured formed parts can be difficult. A full understanding of the drawing and stretching process is necessary, as well as a good understanding of all tooling factors to make complex geometries.

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Stamping | Articles | STAMPING Journal

Die Science: Developing forming dies - Part I

April 10, 2007 | By Art Hedrick

Determining the best die geometry to produce multicontoured formed parts can be difficult. A full understanding of the drawing and stretching process is necessary, as well as a good understanding of all tooling factors to make complex geometries.

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Stamping | Articles

Die Basics 101: Part XIII

April 10, 2007 | By Art Hedrick

Figure 1 Pinch trimming die design Various specialty metal cutting methods are used in stamping operations. Among them are pinch, breakout, and shimmy. Pinch Trimming Pinch trimming is a special method in which the vertical walls of a drawn or stretched vessel are cut by pinching...

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Tool steel damage

Stamping | Articles | STAMPING Journal

Die Science: Tips for grinding and wire machining tool steel

March 13, 2007 | By Art Hedrick

How tool steel is machined can make a big difference in its performance and life. A poor grinding job might look good, but unseen stress can cause premature failure.With the correct grinding and wire burning techniques, tool steel results can be optimized.

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spring pins

Stamping | Articles

Die Basics 101: Part XII

February 13, 2007 | By Art Hedrick

Slug pulling, which occurs when scrap metal—the slug—sticks to the punch face upon withdrawal and comes out of the button, or lower matrix, is a serious problem that can damage parts and dies. Various methods can help reduce the occurrence of slug pulling. Air Vents Putting air vents in...

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Cutting shear

Stamping | Articles | STAMPING Journal

Die Science: Solving punch breakage problems - Part II

January 9, 2007 | By Art Hedrick

Cutting shear, or the angle ground into the end of a punch, has a big effect on punch deflection and breakage, as well as press tonnage required. Retainers, which hold the punch to the die shoe, also are important. The backing plates, ball lock punch retainers, and headed styles of punches and retainers all require careful consideration.

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Piercing punch burr

Stamping | Articles | STAMPING Journal

Die Science: Solving punch breakage problems - Part I

December 12, 2006 | By Art Hedrick

Numerous factors contribute to the premature failure or breakage of piercing and cutting punches. Two common factors are operator error and incorrect die cutting clearance.

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Slug pulling diagram

Stamping | Articles

Die Basics 101: Part XI

December 12, 2006 | By Art Hedrick

Slug pulling is a serious problem in a stamping operation. Addressing the issue requires first understanding why the slugs are pulling. What Is Slug Pulling? When a pierce punch creates a hole, it also produces scrap, usually referred to as a slug. Slug pulling occurs when the slug sticks to the...

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Stamping | Articles | STAMPING Journal

Solving punch breakage problems

December 12, 2006 | By Art Hedrick

This series of articles investigates the many causes of premature punch breakage in stamping operations.

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Stamping | Articles | STAMPING Journal

Die Science: Setting up progressive dies - Part II

October 10, 2006 | By Art Hedrick

Proper feeding, scrap removal, and shut height calibration are essential for good die setup.

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Stamping | Articles

Die Basics 101: Part X

October 10, 2006 | By Art Hedrick

Cutting is the most severe metalworking process that takes place in a die and shouldn't be taken lightly. Cutting Basics Cutting metal requires great force. For example, it takes approximately 78,000 lbs. of pressure to cut a 10-in.-diameter blank from 0.100-in.-thick mild steel. Consequently,...

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Stamping | Articles

Die Basics 101

October 10, 2006 | By Art Hedrick

Editor's Note: "Die Basics 101" is a 17-part article.

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Stamping | Articles | STAMPING Journal

Die Science: Setting up progressive dies - Part I

October 3, 2006 | By Art Hedrick

Editor's Note: "Setting Up Progressive Dies" is a two-part article. Part I discusses press and die cleanness, die alignment, clamping procedures, and preliminary shut height calibration. Part II discusses the process for getting metal into the die, setting the pitch, feed release, and other factors...

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Stamping | Articles | STAMPING Journal

Die Science: Unique forming short cuts

August 8, 2006 | By Art Hedrick

Die designers often are faced with how to make a part feature that is unique and possibly difficut to form. Short cuts are discussed for twisting a part, creating a return flange, and making a 90-degree bend.

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Stamping | Articles | The FABRICATOR

Die basics 101 starts with eight basic components

August 8, 2006 | By Art Hedrick

A stamping die is a special, one-of-a-kind precision tool that cuts and forms sheet metal into a desired shape or profile. Most dies are constructed of several basic components, including die plates, shoes, die sets, guide pins, bushings, heel blocks, heel plates, screws, dowels, and keys. Dies also need stripper, pressure, and drawing pads, as well as the devices used to secure them—spools, shoulder bolts, keepers, and retainers; and gas, coil, or urethane springs.

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