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Articles tagged with "model"

Results: 31

Successful tube hydroforming: Watching parameters, accurately simulating the process yield good results

A typical tube hydroforming system is shown in Figure 1. Within this system, a host of factors must be taken into account, from starting tube geometry and material properties to the quality of the final part (such as thickness distribution and dimensional accuracy).

Publish date: June 15, 2001

Tech cell: Hydroforming


Effective simulation of hydroforming: Current capabilities and requirements for the future

Simulation is used in the hydroforming process to replace the experimental investigation and tests required in a real tryout process.

Publish date: February 19, 2001

Tech cell: Hydroforming


Pressure-sequence and high-pressure hydroforming: Knowing the processes can mean boosting profits

Pressure-sequence hydroforming can form complex parts as well as forming most ductile metals, including high-strength, low-alloy, and stainless steels with sharper corners, thick-walled tube, and other difficult features.

Publish date: February 19, 2001

Tech cell: Hydroforming


Dealing with internal pressure in free hydraulic bulging: Predicting results with FEA

For hydraulic tube bulging, direct pressure control is the most commonly used process. Pressure control allows engineers to determine the correct capacity hydraulic system and, more importantly, prevent tube rupture. However, inflow control, or control of the volume of fluid inside the tube, theoretically could be another viable hydroforming process. Finite element analysis has shown that inflow control could allow engineers to more accurately predict deformation behavior and therefore enhance the hydroforming process.

Publish date: June 12, 2003

Tech cell: Hydroforming


Hydroforming heats up: New techniques and equipment push industry forward

Hydroforming was one of the fastest-growing metal forming technologies during the 1990s. Most of U.S. industry cooled down during and after the recession of 2001, but things have been heating up lately, and the world of hydroforming is no exception. The North American Hydroforming Conference and Exhibition (Sept. 29 – Oct. 1 in Dayton, Ohio), which was sponsored by the Tube & Pipe Association, International® (TPA), and the Society of Manufacturing Engineers (SME), showcased new techniques, equipment, and applications that are moving the industry forward.

Publish date: January 13, 2004

Tech cell: Hydroforming


Handling metal stamping wastes: Protecting the environment - - and your business

Metal stamping companies are required to comply with a number of regulations relating to the collection, transport, treatment, and disposal of the wastes they generate. As a result, each company must learn which materials are classfied as hazardous and how to comply with detailed regulations.

Publish date: February 19, 2001

Tech cell: Materials Handling


Predicting the service life of galvanized steel

Zinc, which has been used to hot-dip-galvanize steel for 250 years, provides 50 to 75 years of corrosion protection in many environments. Empirical data collected about hot-dip galvanized (HDG) steel field performance from 1940 to 1980—in environments ranging from industrial to marine to suburban—indicates that zinc can prevent base steel corrosion more than other surface treatments. Because of zinc's long-lasting protection, projects require no maintenance and therefore no maintenance costs.

Publish date: May 29, 2003

Tech cell: Metals/Materials


Safeguarding machines with an ergonomic spin: The importance of human factors in indstrial safety standards

Human factors contain elements of psychology, engineering, statistics, and observation. Safety codes and standards often are written based on some aspect of human factors, and it may be critical to have a full understanding of the human factors behind the code or standard before applying the same concept to other equipment.

Publish date: June 8, 2004

Tech cell: Safety


Building a better business model: Strategic planning basics for automotive stampers to improve profit

Just what is a strategic business model, and how can it be developed and used by an automotive stamping supplier wanting to boost its bottom line?

Publish date: October 11, 2001

Tech cell: For CEOs


Family business going strong after 100 years

The average lifespan of a family-owned business is 24 years, and 60 percent of family-owned businesses do not have a clear succession plan. Tell that to the Peddinghaus Corporation and you might be in for a big "Oh really?" In business for 100 years and with a Peddinghaus still at the helm, the family-owned manufacturer of steel construction industry equipment clearly is a statistical exception.

Publish date: December 11, 2003

Tech cell: Fab Stories


Steel industry anything but status quo: Next generation of distributors set to lead wave of change

As the market demands change, the steel distribution industry will take up the gauntlet and change with the times. Contrary to some speculation, the steel manufacturing industry is neither going away nor reluctant to embrace the innovations necessary to survive.

Publish date: July 12, 2001

Tech cell: Industry Trends and Analysis


Common barricades on the road to lean

The number of opportunities to steer your company wrong during a move toward lean manufacturing are myriad. Knowing a few of the common ones may help you achieve your goals without a lot of headaches.

Publish date: Array

Tech cell: Shop Strategies


Tips on Lean Manufacturing: How to purge weight from your manufacturing operation

All manufacturing operations need to reinvent themselves to compete in today's marketplace. What can you do to change? Try going lean.

Publish date: February 19, 2001

Tech cell: Shop Strategies


Tips on Lean Manufacturing: Mastering the stop 'n' go of your shop's work flow

Mastering the flow of work through your shop is your most important taks if you are attempting Toyota's approach to lean manufacturing.

Publish date: August 16, 2001

Tech cell: Shop Strategies


Taking a look at performance appraisals

If you make continuous feedback part of your managerial style, the annual performance appraisal becomes an affirmation of a positive working relationship.

Publish date: March 28, 2002

Tech cell: Training and Retention


Examining press feeding options: Considerations that determine a feed's effectiveness

Press- and servo-driven roll feeds and gripper feeds are almost as common to the stamping industry as sheet metal and dies. Knowing how to use them effectively may not be so common.

Publish date: July 12, 2001

Tech cell: Press Feeding


Appliancemaker reduces downtime with stamping press feed system: Inconsistent feeds caused die jams, inconsistent parts

The Whirlpool Co. builds refrigerators at its facility in Fort Smith, Ark. The company stamps the appliance parts—large and small, galvanized, cold-rolled, and aluminum—on approximately 35 presses. The majority of its stamping presses are straight-side machines, although some are open-back inclinable (OBI), and a few are hydraulic.

Publish date: January 13, 2004

Tech cell: Press Feeding


Hydraulic workholding from scratch: How to select and set up components

Hydraulic clamps are used in place of manual or toggle clamps to hold the workpiece or tool in place during stamping. This article examines the four steps that comprise the selection and installation of a hydraulic workholding system: cylinder selection, cylinder force and stroke, power source selection, and system connection.

Publish date: December 13, 2001

Tech cell: Press Technology


Experimenting with flexible blank holder force control: Prototype shows promise for difficult-to-form materials

The quality of deep drawn sheet metal products is determined largely by the rate at which a sheet is drawn into a die. Varying blank holder force (BHF) as a function of time or the press stroke is of great importance.

Publish date: July 12, 2001

Tech cell: Press Technology


Dangerous curves: Jaguar successfully mass-produces the industry’s first aluminum body structure

Publish date: June 8, 2004

Tech cell: Press Technology


The problem with quality: A closer look at quality ratings

In May, automotive quality gurus J.D. Power & Associates released the results of its 2003 Initial Quality Study (IQS). As is the case every year, the winners will trumpet their scores while the losers will promise improvement. A closer look at the numbers, however, reveals some interesting observations.

Publish date: July 10, 2003

Tech cell: Testing and Measuring


Taking an integrated build approach to stamping tool tryout

Market pressures to reduce tooling costs are pressing the tool and die industry to seek lower-cost tooling solutions. This column discusses different build approaches and the merits of an integrated build for trying out stamping dies (and molds) as part of the manufacturing validation process.

Publish date: June 26, 2003

Tech cell: Tool and Die


Using finite element analysis to roll-form tubes

Roll forming is a common method for producing steel tubes. It is a continuous process in which a strip is guided through several sets of rolls that form the strip into the desired shape. After the final shape is achieved, tube edges are welded together to form a closed section. After the welding operation, the tube is sized through another set of rolls to obtain the required diameter.

Publish date: October 9, 2003

Tech cell: Tube and Pipe Fabrication


Whale watching: A doctor's love of whales leads to a complex welding project

Metal artist James Berry constructed a large whale display by making healthy use of Gas Metal Arc Welding. Here's how he did it, and why.

Publish date: June 15, 2001

Tech cell: Art and Sculpture


Riding on the cusp of something great: When Colorado artist's career hits plateaus, he climbs them

Kevin Robb's sculptures seem to defy gravity, arrest time, encroach space. Each sculpture is a moment freeze-framed; each element seems to be impossibly suspended.

Publish date: May 15, 2003

Tech cell: Art and Sculpture


Programming multiple robots: Operating two or more robots from a single point of control

In many applicatios -- such as large-component welding, press-tending lines, and multiprocess cells -- running multiple robots from a single point of control assists in preventing collisions, simplifying the programming structure, and reducing integration cost. This approach also meets the American National Standards Institute/Robotic Institute of America (ANSI/RIA) R15.06-1999 safety standard.

Publish date: October 23, 2003

Tech cell: Automation and Robotics


Shielding gas consumption efficiency-- Part I: Spend a penny, save a dollar

Installing a bulk delivery system in your welding shop is perhaps the best way to save money

Publish date: February 19, 2001

Tech cell: Consumables


Producing side-impact profiles: Automotive body part combines roll forming, punching, laser welding

The ramming machine bores into the side of the new automobile at a speed of 50 kilometers (31 miles) per hour. Within a fraction of a second, sensors situated all over the test dummy signal details of the stress load. Shortly afterward the overall results of the Euro-NCAP crash test will appear in all the specialized automobile magazines.

Publish date: January 13, 2004

Tech cell: Laser Welding


Revving up weld quality: Ford Development Center uses RW system to reduce costs, improve quality

Publish date: June 8, 2004

Tech cell: Resistance Welding


Press brakes: the quest for a happy ending: Manufacturers, users hope technology is the ticket

Screen some press brake owners and manufacturers these days, and it's like they're all reading from the same script:

Publish date: June 26, 2003

Tech cell: Bending


Job shop reduces costs, improves laser's output: Laser regulator minimizes gas contamination

Today's job shop market is characterized by unrelenting competitive pressure for laser processing services. Job shops are expanding into niche services such as multiaxis laser processing and thick plate applications to differentiate themselves from their competitors. Others are performing additional services such as forming, welding, painting, and assembly to add value.

Publish date: May 29, 2003

Tech cell: Laser Cutting