Content tagged with "wall"
Results: 24
Article
January 10, 2006
Cutting to the chase - Integrating secondary operations
Many tube cutoff machines have evolved to integrate end forming and bending capabilities that normally are considered secondary operations. Considering the tube industry's need to reduce costs to stay competitive, the concept of integrating more operations may sound appealing. An inline system... Read more...
Article
March 11, 2004
Article
January 13, 2004
Troubleshooting compression bending
Most compression bending problems are one of three types: Flattening or collapsing on the outside of the bend. Crimping or wrinkling on the inside of the bend. Dimpling on the inside of bend. Generally you can prevent these problems by implementing these standard solutions:... Read more...
Article
October 23, 2003
Tube Hydroforming Design Flexibility—Part IV
Editor's Note: This article is Part IV in a series about tube hydroforming design flexibility. Please read Part I , Part II , Part III , and Part V .
Material selection is a very important aspect of design flexibility when striving to fulfill part functionality requirements.... Read more...
Article
September 25, 2003
The wrinkle-wiper for tube bends
Figure 1 Here's a quick quiz for you to take: What "wipes" the wrinkles from the bend in a tube and is one of the five pieces of tooling in a die set? If you guessed wiper die, you're right. A piece of tooling used to keep the inside bend of a tube from wrinkling, a wiper die... Read more...
Article
August 28, 2003
Die geometry for embossing and stretching
Embossing usually refers to the stretching of metal into a shallow depression. Unlike drawing, embossing entails little or no inward metal flow. Some automobile hoods and parts are made using a stretching operation, while others use a combination of drawing and stretching (see Figure 1 ).... Read more...
Article
August 28, 2003
Washington women weld at the 'Y'
It's a drizzly, blustery Pacific Northwest morning in November with the gray light of dawn coming up behind the Cascade Mountain Range. Crew Leader Cheryl Boxx, clad in Carhartts®, squares her hard hat in place and begins checking scaffolds, rigging, welding equipment, and her... Read more...
Article
August 28, 2003
Minimizing wall thickness variation in seamless tubing
Reducing the amount of variation, or achieving more wall thickness consistency, can be the difference between meeting a customer's requirements or not. It also helps to reduce or even may eliminate the customer's need for subsequent processes such as machining. Seamless tube typically is... Read more...
Article
July 24, 2003
Tier 1 supplier builds four-stage competitive strategy
F & P Manufacturing Inc., a Tier 1 automotive supplier, is no stranger to competitive and financial pressures. Unrelenting competitive pressures come from the many other Tier 1 suppliers looking for opportunities to increase their slice of the automotive pie. Financial pressures come from... Read more...
Article
July 10, 2003
Article
May 29, 2003
Article
May 15, 2003
Solving the mysteries of the fin pass—Part 2
First, some ground rules (assumptions) for the arrangement before we discuss some possible reasons for poor-quality seam welding and their solutions:
1. You are working with a new set of rolls and spacers. We assume that the rolls are manufactured correctly. This eliminates from the equation... 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
April 24, 2003
Tube Hydroforming Design Flexibility—Part III
Editor's Note: This article is Part III in a series about tube hydroforming design flexibility. Please read Part I , Part II , Part IV , and Part V .
The last article in this series noted that variable periphery design, or cross-section expansion, often is thought to be the most... Read more...
Article
May 16, 2002
Tube Hydroforming Design Flexibility—Part I
Editor's Note: This article is Part I in a series about tube hydroforming design flexibility. Please read Part II , Part III , Part IV , and Part V .
Design flexibility is something that all automotive designers want, but too often they lack a thorough understanding of what that... Read more...
Article
December 13, 2001
Sawing structural and architectural tubing
Figure 1 The circular saw is a commonly used option for cutting structural materials, including (top) solid H beams, and both round (middle) and rectangular (bottom) hollow materials. Architectural tubing is something of a mixed blessing: On the one hand, the material is... Read more...
Article
November 15, 2001
Using hydroforming aluminum components versus steel stampings
As the name implies, hydroforming is a metal forming process that uses water as a forming medium. In the case of tube hydroforming, a tubular workpiece is placed between two mating die halves. The tube is sealed, normally by metal mandrels inserted under pressure in each end of the tube. Water... Read more...
Article
October 11, 2001
The importance of the n value in sheet forming
Figure 1: Magnitudes of elongation at the onset of necking vary with the n value. Editor's Note: This column was prepared by the staff of the Engineering Research Center for Net Shape Manufacturing (ERC/ NSM) , The Ohio State University, Professor Taylan Altan, director. Strain... Read more...
Article
July 26, 2001
Article
April 24, 2001
Increasing productivity on your cutoff saw
If you are sawing tube or pipe in substantial quantities, you most likely have a cutoff saw to do the work. As with all of your machinery, your goal is to get the most out of it, and that takes some special consideration. Tubes and pipes are hollow workpieces, so each cut consists of three... Read more...
Article
February 19, 2001
Article
February 19, 2001
Article
February 19, 2001
Article
February 19, 2001
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