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.

Developing forming dies Part II

May 8, 2007

By:

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...

Continue Reading

Developing forming dies Part I

April 10, 2007

By:

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.

Continue Reading

Die Basics 101: Part XIII

April 10, 2007

By:

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...

Continue Reading

Tool steel damage

Tips for grinding and wire machining tool steel

March 13, 2007

By:

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.

Continue Reading

spring pins

Die Basics 101: Part XII

February 13, 2007

By:

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...

Continue Reading

Solving punch breakage problems - Part III

February 13, 2007

By:

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.

Continue Reading

Cutting shear

Solving punch breakage problems - Part II

January 9, 2007

By:

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.

Continue Reading

Piercing punch burr

Solving punch breakage problems - Part I

December 12, 2006

By:

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.

Continue Reading

Slug pulling diagram

Die Basics 101: Part XI

December 12, 2006

By:

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...

Continue Reading

Solving punch breakage problems

December 12, 2006

By:

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

Continue Reading

Designing dies 2-D or 3-D?

November 7, 2006

By:

Both 2-D and 3-D die design packages have advantages and disadvantages, which are discussed here, but true success lies in the designer's ability, not the software's.

Continue Reading

Setting up progressive dies - Part II

October 10, 2006

By:

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

Continue Reading

Die Basics 101: Part X

October 10, 2006

By:

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,...

Continue Reading

Die Basics 101

October 10, 2006

By:

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

Continue Reading

Setting up progressive dies - Part I

October 3, 2006

By:

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...

Continue Reading