Content tagged with "travel"
Results: 31
Article
June 8, 2004
Spraying it right
For coil-fed applications, spray cabinets can be mounted to the feeder to accommodate passline changes. Most stampers understand the need for lubricants, but many apply as little as possible so they don't have to deal with the mess. Others take an opposite approach and flood the tool... Read more...
Article
June 8, 2004
Selecting a shielding gas for joining stainless steel
The use of stainless steel has grown significantly over the past decade in North America. As its use has grown, so has the number of different consumables required to join it. Because stainless steels are used in applications that are different from carbon steels, it follows that their... Read more...
Article
March 11, 2004
Flying high with orbital welding
The first machines developed were large, upright, stationary systems that could be used only for workshop applications. These systems also had to make several rotations to complete a joint because only single-level power supplies were available. To make consistent welds, they had to make... Read more...
Article
January 29, 2004
Choosing the right robotic weld cell for your operation
If a company does much hand welding, it may have loose tolerances on the prints. However, a robot cannot work with these kinds of tolerances. A robot can maintain a good weld only if the parts are held to a tolerance of ± half the weld wire diameter. If this is not determined at... 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
December 11, 2003
Getting the best results in gas-shielded FCAW
The demand for flux cored arc welding (FCAW) has grown significantly over the past 10 years. Manufacturers who weld carbon, stainless, low-alloy, and high-alloy steel are turning to this process primarily because: It has a high deposition rate. It can be used to weld in all positions... Read more...
Article
October 9, 2003
Eliminating final trim shearing of hydroformed tube
An alternative to trimming a tube to establish tube length is to form the tube in the preform operation to a geometry that is close to the final product and to seal it during hydroforming with caps that match its formed shape. Generally, a round tube is bent on a rotary draw bender... Read more...
Article
July 24, 2003
Which wire do you require?
Many fabricators overlook the efficiencies they can gain by changing a wire or process. In fact, when you ask fabricators why they're using a particular electrode, some respond with "That's the way it's always been done here," even though another way might yield significant improvement.... Read more...
Article
June 26, 2003
The end of the (welding) world as we know it?
Many across the state whose livelihoods depend on welding—shop owners, instructors, and welding equipmentmakers—are waiting to hear if all but one of the state's vocational-technical welding programs will be eliminated as the result of state budget cuts. Vocational-technical... Read more...
Article
June 26, 2003
Selecting a table for abrasive jet machining
Editor's Note: This article is the third in a series intended to help a prospective user evaluate abrasive jet machinery. The first article, Buying an abrasive jet machine , compared the abrasive jet process with other cutting processes. The second article, Software for abrasive waterjet... Read more...
Article
June 12, 2003
Understanding weld discontinuities
A welder's primary concern in any kind of work is ensuring his weld is sound. For this reason, it's important for an inspector examining the weld to be able to spot a variety of weld discontinuities, including: Porosity. Incomplete fusion. Incomplete joint penetration. Unacceptable... Read more...
Article
May 29, 2003
Robots and dials and knobs—oh my!
It has been said that necessity is the mother of invention. You be the judge. In the late 1950s, the U.S. Navy wanted to find a way to join heavy aluminum structural sections used to fabricate motor torpedo boat hulls. Gas tungsten arc welding (GTAW) offered suitable process... Read more...
Article
May 15, 2003
Examining slit coil handling and packaging
Figure 1 A turret recoiler with two rewind drums and two overarm separators mounted on a 180–degree rotating base can save time by allowing coil tails to be taped or banded while the slitter is running. Today slit coil packaging systems are available for almost every operation,... 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
December 13, 2001
Hydraulic workholding from scratch
Hydraulic clamps can be used in place of manual or toggle clamps to hold a workpiece or tool in place during stamping. The foundation for effective hydraulic workholding is built on component selection and system connection. Whether the system is simple or complex, the job at hand basic... Read more...
Article
December 13, 2001
When sparks fly ...
While an arc welding unit was being used on the second floor in a Kaukauna, Wisconsin, warehouse, sparks dropped through an opening to cardboard boxes below, igniting the boxes. There was no fire watch on the first floor, and when the fire was discovered 15 minutes later, employees could... Read more...
Article
October 25, 2001
Achieving straight-side capabilities in a gap-frame press
Gap, or C-frame, mechanical stamping presses have undergone relatively few fundamental design changes since they were first introduced in the mid-1800s. The basic principle behind their operation, simply stated, is this: Inertial energy stored in a rotating flywheel is converted to a... Read more...
Article
October 25, 2001
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
September 4, 2001
Robotic arc welding gets smart in real time
Though robots probably are best-known for their ability to accomplish repetitive manufacturing tasks, it's no secret that, by themselves, they are unintelligent and must be told what to do. They are silent, unable to talk over problems with their controller, power sources, the robot in... Read more...
Article
September 4, 2001
Skiving strip edges for tube and pipe producing
Edge treatment of coil strip before it enters a tube and pipe mill, called skiving, is a rapidly advancing technology. Improving the coil edge before it is welded helps increase the quality of the seam join and helps prevent rejected tube or pipe. Traditional Skiving Equipment Edge skiving to... Read more...
Article
September 4, 2001
Standardizing finger tooling
Figure 1: Tooling is mounted to transfer rails by receivers, which provide mechanical, electrical, and pneumatic connections. Improvements in transfer press automation and the availability of used large-bed presses for retrofitting have accelerated the use of transfer presses with... Read more...
Article
July 12, 2001
Automated welding for job shops
A robotic welding system represents a significant capital investment for a job shop. The number and diversity of typical products that job shops produce may discourage any interest in automation, primarily because the company cannot figure out how to justify the system purchase and operation.... Read more...
Article
June 18, 2001
Big steel on the ropes
The story of the U.S. steel industry as of late reads a lot like the book of Job, whose misfortunes at the hands of the devil made his name synonymous with pain and suffering. Indeed, Chapter 11 might be an appropriate place to start reading, because that's where many of Big Steel's main... Read more...
Article
February 19, 2001
Article
February 19, 2001
Designing for successful robotic arc welding automation
This dual robot system uses a large "Ferris Wheel" positioner to give the robots access to the underside of the parts to be welded. Automated robotic arc welding systems are used in all types of manufacturing. They can provide several benefits in certain welding applications. The... Read more...
Article
February 19, 2001
Article
February 19, 2001
Article
February 19, 2001
Joining aluminum with GTAW: Advice for the novice
Aluminum: beautiful, lightweight, strong, versatile—and a real challenge to weld, especially for beginners. This article describes some of the new gas tungsten arc welding (GTAW) equipment available and its benefits, accessories required, points to consider before welding, and the... Read more...
Article
February 19, 2001
Article
February 19, 2001
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