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Stamping 101: Anatomy of a Mechanical Press

January 15, 2008 | By Dennis Cattell

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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Komatsu H2F Series Servo Press

The science behind the servo press

January 15, 2008 | By Tim Heston

Flexibility sums up where the servo-driven mechanical press stands in its evolution. Early adopters are seeing that flexibility and asking, "What if?" What if I could control ram motion throughout the stroke and dwell for a certain period at bottom dead center (BDC)? According to sources, those "what ifs" have led to new ways of thinking about forming metal.

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Stamtec's sister company supplies blanking lines

January 15, 2008

Stamtec Mechanical Stamping Presses' sister company, Sumikura/Chin Fong Japan, has provided two blanking lines to Thyssen Krupp China. The lines consist of :Tonnage:800 metric tons (880 U.S. tons)Bed size:5000 mm x 2500 mm (196" x 98")Top Speed:20-60 spmCoil FeedlineStock WasherCut-to-length...

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Press brake features comprehensive bending database

January 15, 2008

The Beyeler Xpert press brake from Bystronic has the world's most comprehensive database related to material bend allowances and extensive empirical bending knowledge, according to the company. It can be operated independent of previous operator experience. The machine supports all major tooling...

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Bayloff appoints CEO

January 15, 2008

Bayloff Stamped Products, a third-generation, family-owned automotive stamping company, has appointed Tom Carey as CEO and president.Carey implements initiatives designed to enhance customer service and position the company for continued growth. He spent more than 20 years in various engineering...

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FABTECH hosts 31,000 visitors, covers 461,627 sq. ft.

January 15, 2008

The 2007 FABTECH® International & AWS Welding Show at McCormick Place in Chicago hosted more exhibiting companies and covered more exhibit space than any previous FABTECH. Filling 461,627 sq. ft. of booth space, the show attracted nearly 31,000 visitors from more than 75 countries, a 27 percent...

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ATI Industrial Automation opens new office in Beijing

January 15, 2008

ATI Industrial Automation, Apex, N.C., an engineering-based developer of robotic peripheral equipment, recently opened an office in Beijing.The new office houses sales, customer service, and training departments, along with areas for spare parts and product demonstration. The company says it...

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Controlling slug pulling

Controlling slug pulling with hole lapping

January 15, 2008 | By Wilson J Cubides

Diemakers have several options for slug-pulling problems, such as knockout pins, vacuums, punch or die dulling, oil viscosity, wire EDM hole slots, punch/die clearance changes, edge shearing, mechanical grippers, air jets, and cuped-shaped punches. Another method to help stop slug pulling is bell- mouthing the die, which essentially involves cutting a funnel shape around the hole.

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Transfer die rails

Die Science: Stamping 101 - Die basics

January 15, 2008 | By Art Hedrick

This article introduces beginning toolmakers, die maintenance technicians, engineers, and press technicians to tool and die components and their functions

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Leveler machine

New generation of levelers tames high-strength steels

December 11, 2007 | By Sascha Becker

A new generation of levelers is equipped to meet today's demands to flatten the high-strength materials.used more prevalently in the automotive industry than ever. To tame the coil set, crossbow, twist, and edge camber in high-strength steel (HSS) coil, higher leveling forces and new concepts are needed.

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Primary flux

Optimizing a single probe, gap-tolerant, double sheet detector system

December 11, 2007 | By Fred Goronzy

Detecting the presence of two sheets in a press feeding operation uses scientific principles, but the process is not an exact science. A typical press-feeding situation involves an air gap between the detector and the first sheet in the stack or an air gap between the top two sheets, and these air gaps reduce the detector's effectiveness. Understanding the capabilities of the detector and the limitations imposed by imperfect conditions can help stampers set up an effective double-sheet detector system.

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Oil sampling

8 Things you should know about your hydraulic press

December 11, 2007 | By Thomas Lavoie, Carl Jean

What should you do to keep your hydraulic press running? Know your press--when it is working properly or when it needs attention. You can extend press life and maximize your investment by keeping your eyes and ears tuned and by performing 8 preventative maintenance steps.

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Car bodies

Tooling for forming high-strength material

December 11, 2007 | By Brett Krause

The demands are increasing for forming with higher-strength work materials, particularly for automotive applications because of their lighter weights. It can be a challenge to find a tool steel material that does not chip, crack, or wear when used on high-strength steels. This article compares various tool steel materials and how they stand up to the challenge.

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Stamped component figure 1a

Dissecting defects - Part III

December 11, 2007 | By Taylan Altan, Ph.D.

Editor's Note: This article is part of a three-part series. Part I categorizes defect types and discusses the factors that affect formed part quality; Part II covers various destructive and nondestructive tests for evaluating incoming material; and Part III is an introduction to process monitoring systems.

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Choosing between feeding your new stamping line coil or blanks?

December 11, 2007 | By Bruce Bean

Stampers today need to process more grades and types of material than ever before, yet are under relentless pressure to reduce costs. They increasingly rely on systems integrators and equipment suppliers to design and install versatile stamping lines with quick-change capabilities. A notable case was that of a truck frame and chassis components manufacturer. It worked with vendors to develop a line that processes material up to 0.280 in. thick and 72 in. wide, in a range of yield strengths, in three forms – coil, blanks, or sheet.

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