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.
Tool steel diagram

Cutting tooling costs: Part II

August 1, 2007

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To stay competitive in today’s market, stampers must build dies from materials that adequately perform with as little maintenance as possible. Appropriate tool steels can be cold-rolled steel to solid carbide. The key is to know when to use a lower-grade steel and when to use a higher-grade tool steel.

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Toolmaker

Cutting tooling costs: Part I

July 10, 2007

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To reduce tooling costs, key items such as high-quality tool steel and quality die components some companies ignore or substitute which usually results in premature tool failure, excessive downtime, and scrap. Sometimes you have to invest a little more in your tooling to be successful.

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Developing forming dies Part III

June 12, 2007

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Editor's Note: This is third installment of a three-part series that discusses die development for producing nonuniform, contoured parts by breaking the process down into eight steps. Part I covers the part material, its form, and its function. Part II discusses length-of-line analysis and tip...

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Conventional cutting

Die Basics 101: Part XIV

June 12, 2007

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Although fineblanking and GRIPflow® often are categorized as metal cutting operations, they more closely resemble a cold metal extrusion process that creates what appears to be a blanked part. The processes can be defined simply as methods in which a part is squeezedfrom the strip.Unlike parts...

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Developing forming dies

June 12, 2007

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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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Developing forming dies Part II

May 8, 2007

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Editor's Note: This is first installment of a three-part series that discusses die development for producing nonuniform, contoured parts by breaking the process down into eight steps. Part I covers the part material, its form, and its function. Part II discusses length-of-line analysis and tip...

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Developing forming dies Part I

April 10, 2007

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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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Die Basics 101: Part XIII

April 10, 2007

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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

Tips for grinding and wire machining tool steel

March 13, 2007

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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

Die Basics 101: Part XII

February 13, 2007

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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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Solving punch breakage problems - Part III

February 13, 2007

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Numerous factors contribute to the premature failure of piercing and cutting punches. In addition to problems with the punches, such as tool steel or problems caused by EDM and grinding, the press can cause problems through deflection, and bridge strippers also can cause punch breakage.

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Cutting shear

Solving punch breakage problems - Part II

January 9, 2007

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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

Solving punch breakage problems - Part I

December 12, 2006

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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

Die Basics 101: Part XI

December 12, 2006

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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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Solving punch breakage problems

December 12, 2006

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

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