Dennis Cattell


The Minster Machine Co.
240 W. Fifth St.
Minster, OH 45865


Phone: 419-628-2331
www.minster.com
Contact via email

Ask the Stamping Expert: Do we really need die safety blocks for die setting?

May 27, 2016

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Dennis Cattell answers this question with a resounding "Yes!"

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Ask the Stamping Expert: Do die repairs require full lockout/tagout?

April 18, 2016

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Editor’s Note: Regular readers of this column might recognize that Mr. Cattell answered a similar question in the May/June 2010 issue of STAMPING Journal®. Since this question reflects a common concern among stampers—and is asked of Mr. Cattell quite frequently in his work—we felt it would be beneficial to address the issue again.

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Ask the Stamping Expert: How can I get a die to run in two different presses?

April 11, 2016

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Q: When I move a die from one press to another, the die runs fine in the first press but will not run in the second press. The presses are the same size, stroke, and speed range, although one is a few years older than the other. What can I do to ensure the die runs in both presses. A: There are...

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Ask the Stamping Expert: Is there a check list for setting progressive dies?

April 1, 2016

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Q: We are new to die setting. Do you have a check list that could help us with different progressive dies? Can you recommend any literature on the subject? A: First, I do not know of any comprehensive literature. Most literature tends to focus on an individual subject rather than cover the overall...

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Ask the Stamping Expert: How can I reduce snap-through condition effects?

March 31, 2016

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In the May/June 2012 “Ask the Expert” column, you discussed the causes of the large vibrational energy wave that must be dissipated by the press structure beyond the shear loads. Is there any way to reduce the vibration? A: Many lamination and blanking dies incorporate moveable stripper...

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Ask the Stamping Expert: Why do press and die problems occur at lower-than-capacity press speeds?

March 31, 2016

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Q: To improve efficiency and reduce cost in our newly acquired high-speed blanking operation, we have increased press speeds from 225 SPM to 450 SPM. After several successful months, we are experiencing a high number of new press and die problems. The presses are capable of speeds higher than 500...

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How do I calculate tonnage in progressive stamping?

January 27, 2009

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This article the complete STAMPING Journal® Ask the Expert column, as answered by columnist Dennis Cattell of The Minster Machine Co., and published in the Jan/Feb 2009 issue:

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Mechanical press diagram

Stamping 101: Anatomy of a Mechanical Press

January 15, 2008

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Stamped components are made by forming, drawing, trimming, blanking, or piercing metal—in sheet or coil form—between two halves (upper and lower) of a press tool, called a die. The upper member (or members) are attached to slide (or slides) of the press, and the lower member is clamped or bolted to the bed or bolster. The die is designed to create the shape and size of a component. The two halves of the die are brought together in the press. Both force (load) and accuracy are required to achieve the repeatability and tolerance demands.

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