Stamping Articles

Whether you're using a high-speed stamping press to make simple parts at breakneck speeds or doing something really tricky, like deep drawing a material that puts up a lot of resistance, the information in this technology area is sure to help. The articles, case studies, and press releases cover stamping presses, lubricants, and materials.

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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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Clean straightening head

For flawless cosmetic finish, start at the head

October 9, 2007

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Stamping cosmetic parts in coil feed lines can be challenging. Cleaning the coil feeding head properly can eliminate waste or scrapped parts caused by debris and contamination.

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Retrofit Rxfor automaker's aging press

October 9, 2007

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An automotive OEM's 4,000-ton transfer press produces parts with difficult draws, such as pickup door panels, in the 1,600-ton first station. Facing problems finding obsolete parts for repair and also considering crucial performance requirements in that first drawing operation, the automaker had Schuler Inc. upgrade the press with a modular hydraulic bed cushion.

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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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Stamping manufacturing

6 ways to focus on slitting lines

September 11, 2007

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By improving entry coil storage, coil inside diameter (ID) changes, slitter tooling changeover, scrap handling, and strip tensioning, you can slitting line efficiency.

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Roller Leveler

Leveling flat-rolled strip

September 11, 2007

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Operating a leveler requires training and skill, but computers are making the task much easier. A computer can quickly set the machine to a good starting point and allow very fine adjustment of the back-ups. Once the leveler is delivering good results on a particular coil, the settings can be saved and called up later. That saves setup time when coils are partially run and then sent back to stock.

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Shear zone geometry characteristics

Blanking developments

September 11, 2007

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Editor's Note: This is Part IIIof a three-part series on blanking developments. Part I, which appeared in the July issue, focused on fineblanking and tool design. Part II, which ran in the August issue, covered fineblanking part and process design guidelines.This column was prepared by Serhat Kaya,...

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Blanking developments - Part III

September 11, 2007

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During high-speed blanking, press stroking rate and punch speeds, are higher than in conventional blanking. As a result, the shear zone has a higher strain rate, which affects a workpiece's sheared surface temperature and the tool surface.

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Ridin' the storm out Part II

September 11, 2007

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Automotive Tier II supplier of ride control parts Tennessee Stampings makes extensive use of sensors to mistake-proof its stamping, and clear the way for its 23 percent annual growth. Before the dies ever hit the presses, they are properly sensored so you don't incur downtime associated with troubleshooting the sensor in the press.

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Springback

Clearing the springback hurdle

September 11, 2007

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Springback is a fact of life for stampers, but knowing what causes it and how to deal with it— through stabilization, compensation, and verification—can help them overcome the problem.

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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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Punches

12 ways to boost punch life

August 8, 2007

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High-strength, low-alloy (HSLA) steels require new ways of thinking about extending punch life. At the same time, there are many tried- and-true techniques that still work.

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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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Fastblanking cycle diagram

Blanking developments - Part II

August 8, 2007

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Fineblanking in various forms is increasingly becoming accepted by the automotive industry for producing sheet metal components with smooth edges that don't require additional finishing operations.

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Uni-Roller?

Maintain precise control of fluids and lubricants application

August 8, 2007

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UNIST Metalforming Lubrication Systems provide precise control of fluids and lubricants applied to coil and blank stock. Companies interested in evaluating UNIST's stock lubrication in their facilities can request a 30 day trial from the factory.The uni-Roller™ is used to place an even,...

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