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Coil feed line considerations when stamping HSS

December 13, 2005 | By John Heuring

With its higher tensile and yield strengths, HSS is stronger at any given gauge than conventional "mild" steels. Initially, lighter-gauge HSS was used to replace heavier-gauge mild steel to reduce weight in many automotive parts, and this continues to be the most widely used application for HSS. However, as a new trend to run thicker and thicker gauges of HSS continues, stamping fabricators are evaluating their press feeding and coil handling equipment, as well as press tonnage capacities and die designs to ensure that these harder parts can be formed effectively. The dynamics of HSS have a bearing on feeding, straightening, and coil handling equipment.

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Straight to the point

December 13, 2005 | By Brian Landry

The straightener, when set properly, removes the coil set, or curvature of the rolled material. If the machine is used or set incorrectly, the coil set can remain in the material, even after being struck in presses with capacities to hundreds of tons. This can cause a variety of problems: out-of-tolerance parts, difficult feed operations that can disrupt and slow performance, and, to some extent, additional wear and tear on feed line components and tooling.

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A need for speed

December 13, 2005

Currently, Dana's Chatham, Ontario division produces several heat shields for fluid-management systems including heat exchangers, valves, and coolers. With higher demand yields and new orders, the stamper needed an automated press line that could improve uptime, quality, and reliability.

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Achieving consistent stock lubrication with less oil

December 13, 2005 | By Ron Hawkins

Low-volume, low-pressure (LVLP) lubrication systems can offer stampers a way to maintain the most appropriate lubrication level for each job while reducing oil consumption.

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Die basics 101: Part V

December 13, 2005 | By Art Hedrick

Many specialty components can be used in dies, but the most commonly used are die plates, shoes, die sets, guide pins, bushings, heel blocks, heel plates, screws, dowels, and keys—all of which were explained in Part IV of this series. This article focuses on other common components—pads,...

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Cushioning the blow

November 8, 2005 | By Dan Davis

Hercules Machine Tool & Die Co. has intalled a fully programmable hydraulic cushion onto a mechanical press in hopes that it can cut down on try-out time and attract more business involving specialty stamped parts

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Quick die change and the trend toward larger presses

November 8, 2005 | By Mark Cairney

Through the use of such tools as T-tables, die carts, and rolling bolster systems, stamping companies can help increase the uptime of their pressroom operations, increase levels of operational safety, and improve their bottom lines.

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Okay with tool coating

November 8, 2005 | By Todd Earl

"Okay Industries, New Britain, Conn., serves diverse market segments including medical, automotive, electronics, defense, and specialty industrial. The stamper produces a roller finger follower for automotive applications. There are 14 stations on the die. The TD process is used on three of them," DeVecchis said. "It has given us better product quality, less scrap, faster throughput, longer die life, and reduced die dressing."

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Knockout punch

November 8, 2005 | By Scot Stevens

The system Sanmina-SCI uses to produce rails for Sun Microsystems' large servers is a key factor in Sanmina-SCI's competitiveness when it comes to processing a large, heavy-gauge, complet part, delivered in large volume on an as-needed basis for computer server systems and other similar applications.

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Die maintenance. Die repair.

November 8, 2005 | By Art Hedrick

Unnecessary die repair stems from several basic shortcomings, namely poor die design, setup procedures, tool design, and maintenance techniques.

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R&D Update: Evaluating dry film lubricants for automotive applications Part III

November 8, 2005 | By Taylan Altan, Ph.D.

In recent studies, dry-film lubricants have been shown to give better lubrication conditions when compared to oil-based liquid lubricants. This factor, as well as savings in the amount of lubricant used, has helped increase the use of dry-film lubricants in the automotive industry for forming of aluminum and high-strength steel stamped parts

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Blanking questions have you on the edge?

October 11, 2005 | By Young Seo

Reducing the damaging effects of fractures, burnishing, burrs, and rollover improves subsequent forming processes. The blanked edge condition can be improved by adjusting the punch and die clearance tolerance, shaving the area of the defected blanked edge, designing an appropriate contact profile of the tool and die, and understanding the mechanical properties of the sheet metal used.

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Collaboration in the stamping industry

October 11, 2005 | By Mark Rasmussen

What is the best way to determine the optimum combination of application, design, and costs? An effective collaborative process makes the difference. Teamwork and open communication throughout the process — from prototyping to production — ensure the best design and most efficient manufacturing process, which can save millions of dollars in large projects.

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Die basics 101: Part IV

October 11, 2005 | By Art Hedrick

Stamping dies can comprise many components. This article discusses the basic components, including die plates, shoes, die sets, guide pins, bushings, heel blocks, heel plates, screws, dowels, and keys. This article is one of a 16-part series on the fundamentals of stamping. Descriptions of all the articles in this series, and links to them, can be found at the end of this article.

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Total transfer knowledge

October 11, 2005 | By Dennis Boerger

Transfer systems can deliver flexibility to perform a variety of tasks for current requirements, yet deliver the capability to carry the company at a competitive level over the long haul.

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