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 Drawing process

Die Basics 101: Part XVII

December 11, 2007

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Part XVI of this series wrapped up the discussion of bending in stamping operations. This article focuses on drawing. What Is Drawing? Drawing is a metal forming process in which a product is made by controlling sheet metal flow into a cavity and over a punch. The process of deep drawing means...

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Compression deformation diagram

Piercing, cutting aluminum sans slivers

November 6, 2007

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Slivers are the result of the aluminum interfacing with the cutting sections or punches. To reduce the production of slivers the severity of friction at the point where the two surfaces interface must be reduced. The general rule for cutting materials is the softer the metal the smaller the cutting clearance.

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Rotary rocker benders

Die Basics 101: Part XVI

October 9, 2007

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Part XV of this series described several bending methods—wipe, coin, relief, pivot, and V. It also discussed springback and how to compensate for it when using these methods. This article focuses on other bending processes. Keep in mind that the key to success is to design the bending process so...

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Adhesive Galling

Finding, addressing the root cause of die galling failures

October 9, 2007

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There is no best tool steel type, coating, or way of keeping the punches from breaking. The best solution for each of these problems can be found by collecting specific data with respect to why each of the problems occurs

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Deep draw part

Stamping aluminum

September 11, 2007

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The reality is that aluminum is not steel. It doesn't behave like steel, it doesn't flow like steel, and it certainly doesn't stretch like steel. So does this make aluminum hard to form? No, not if you think like aluminum.

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Springback diagram

Die Basics 101: Part XV

August 8, 2007

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Part II of this series presented a basic overview of metal forming operations, such as bending, flanging, drawing, ironing, coining, curling, hemming, and embossing. This and future installments discuss these operations in more detail. We will look at factors controlling the success of each...

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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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