Content tagged with "piercing"
Results: 26
Article
December 15, 2009
Sheet Metal Stamping 101
The author of the "Die Science" column in STAMPING Journal®, Art also has written several other series that appear at www.thefabricator.com, including:
Solving Punch Breakage Problems Die Basics 101 Cutting Tooling Costs
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Article
October 27, 2009
Sheet Metal Stamping 101, Part IV
Figure 1
Editor's Note: This series presents an overview of metal stamping. Part I of this series focused on the various careers in the metal stamping industry. Part II discussed stamping materials and equipment; Part III focused on dies and cutting and Part IV offers more detail... Read more...
Article
April 29, 2008
Getting the most from your cutting punches: Part II
Many factors influence tool steel selection. Part I of this article focused on selecting the right cutting clearance. Part II discusses properties to look for in tool steel and the importance of heat treating, preparation for production, coatings, lubricants, and the press on which the tool... Read more...
Article
February 12, 2008
Getting the most from your cutting punches: Part I
Figure 1 Image courtesy of Dayton Progress. It seems as though stamping challenges run in cycles or groups. A few weeks ago, I spent a great deal of time helping solve formability problems. You know… splits, wrinkles, springback—typical issues. More recently I have been... Read more...
Article
December 11, 2007
Getting into the thick of high-powered lasers
Figure 1 High-powered resonators have made laser cutting a suitable technology choice for processing thick plate. Laser cutting originated for processing of sheet materials, but new, high-powered lasers, capable of processing heavier-gauge and plate materials, are moving lasers into the... Read more...
Article
August 8, 2007
Jet cutting accessories
Many shops today, from R&D companies that make a few parts per week to production shops that run 24/7 making hundreds of parts per day, use waterjet cutting. Part sizes range from a fraction of an inch to many feet. These shops have differing needs, so they need different accessories... Read more...
Article
June 12, 2007
Recent developments in abrasive jet software
Figure 1
Jet Lag at High Feed Rate
Software serves two functions in abrasive waterjet machining. First, software generally referred to as CAD/CAM is used to transform the design intent into a tool path. This type of software has improved rapidly, and multiple vendors serve this... Read more...
Article
April 10, 2007
Die Basics 101: Part XIII
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... Read more...
Article
April 10, 2007
Article
February 13, 2007
Die Basics 101: Part XII
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... Read more...
Article
December 12, 2006
Die Basics 101: Part XI
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... Read more...
Article
October 10, 2006
Die Basics 101: Part X
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,... Read more...
Article
April 11, 2005
Die Basics 101: Part I
Figure 1 When I conduct conferences, it isn't unusual to have one or two attendees who are new to the stamping die and pressworking world. Some are young new hires trying to learn about stamping, and others are individuals who have been transferred from a different department and... Read more...
Article
May 4, 2004
Designing for abrasive waterjet fabrication
Designers need to be familiar with some abrasive waterjet machining features to minimize overall cost. Some of these concepts also may apply to laser, plasma and oxyfuel cutting. Drafting Practices All projects begin with a design, which usually is prepared with a CAD program. Almost all... Read more...
Article
February 12, 2004
Cutting through five myths about modern lasers
The following five myths about modern laser cutting machines can help the experienced user stay on top of the game and give the prospective laser user a few things to keep in mind. Myth 1: Automated laser cutting systems are too complicated, expensive, and big for small and medium-sized... Read more...
Article
December 11, 2003
Selecting a stamping die pressure system, Part I
Selecting the stamping die's pressure system can be a critical decision. Many questions must be answered to determine what type of pressure system best suits your application. Controlling Factors 1. Pressure requirements Simple conventional metal cutting dies, such as those used in blanking... Read more...
Article
September 25, 2003
Making the most of hydroforming
Figure 1 To help ensure successful part development, it is necessary to establish a multitask project team. Designers, hydroforming technologists, and material specialists should be involved in the component stage. To achieve possible economic benefits from this process, it is... Read more...
Article
May 15, 2003
Producing holes in tubing
Producing holes in tubing with punch press tooling can be divided into two main processes: punching and piercing (see Figure 1 ). Tube Piercing Tube piercing is different from traditional hole punching in that a die is not employed on the underside of the material. Instead, external... Read more...
Article
November 15, 2002
Equipping Your Press With the Right Tonnage Monitor
Tonnage monitoring equipment has been around for several decades. The early models were sometimes finicky, hard to use, and susceptible to outside electrical interference. Today's tonnage monitors are easier to install, simpler to use, and more reliable. Many types are available to meet the... Read more...
Article
September 17, 2001
Making seamless tubing with a floating mandrel mill
Every six seconds, a single, 32-foot length of oil country tubular goods (OCTG) production tubing used in the exploration and production of oil and/or gas is produced. More than 20,000 miles of tubular product a year can be produced using the floating mandrel mill seamless tubular production... Read more...
Article
September 17, 2001
Designing progressive dies
Figure 1: This part was rotated in the strip to maintain critical tolerances better. The decision to produce a part progressively is usually determined by two factors: the volume of production and the complexity of the part. These two factors are instrumental in the design and... Read more...
Article
May 30, 2001
Article
May 30, 2001
Protecting dies against press system faults
Mechanical switches and grounding switches were among the first devices to be used for automated die protection. Early sensing systems based on mechanical switches simply opened the top stop circuit of a press when a fault was detected. These systems, however, offered no protection from faulty... Read more...
Article
May 15, 2001
Hydroforming of tubes, extrusions, and sheet
Hydroforming tubes, extrusions, and sheet metal is a state-of-the-art enterprise and is just now becoming more popular in the industrial production of frames for light trucks and vans. Figure 1: Hydroforming tubes with outer pressure, though not the norm in the industry, has several... Read more...
Article
February 19, 2001
Article
February 19, 2001
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