April 10, 2007 | By Taylan Altan, Ph.D.
Servo presses are classified into two main types based on their drive systems: direct drives with high-torque, low-speed servomotors, or low-torque, high- speed servomotors.
April 10, 2007 | By Todd Helms
The demand for lightweight, high-strength components is increasing at the expense of traditional steel parts. Emerging technologies, such as steel thixoforming, may help reverse this trend. Thixoformed steel parts are significantly lighter than equally strong parts formed by conventional means.
April 10, 2007 | By Art Hedrick
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...
Coil processors have several choices in the rolls they use to put tension on the coil. One of these choices is a pair of nonwoven rolls. They act like sponges in that they remove lubricants, dirt, and metal fines from the metal. Understanding how nonwoven rolls are constructed and how they work can help coil processors extend their service life.
April 10, 2007 | By Art Hedrick
Determining the best die geometry to produce multicontoured formed parts can be difficult. A full understanding of the drawing and stretching process is necessary, as well as a good understanding of all tooling factors to make complex geometries.
April 10, 2007 | By Lloyd Wolf
Coil optimization software is a valuable tool that fabricators can use to attack the problems of high scrap and high inventory. It offers the ability to quickly and easily make sound decisions regarding the purchase and use of master coil sizes. By using computers and specialized optimization algorithms, fabricators can minimize manual selection of coil sizes.
March 13, 2007 | By Taylan Altan, Ph.D.
A servomotor gives a press slide motion flexibility in terms of accurate speed, motion, and position control. This flexibility produces infinite slide motion variations that may improve part quality and operations such as painting and assembly during one press stroke.
March 13, 2007 | By Brownie Cox
Every metal coil has unique characteristics. Leveling is achieved by precisely bending metal strip back and forth as it's passed through a series of small-diameter offset rolls.
March 13, 2007 | By Art Hedrick
How tool steel is machined can make a big difference in its performance and life. A poor grinding job might look good, but unseen stress can cause premature failure.With the correct grinding and wire burning techniques, tool steel results can be optimized.
March 13, 2007 | By Dan Davis
Amidst the bad news associated with Ford Motor Co., good news is surfacing in Jeffersonville, Ind., home of Kasle Metal Processing. The company is using a software tool to ensure it is operating as efficiently as possible as it heads into one of its busiest months ever.
February 19, 2007 | By Tim Malarky
Traditional coil slinging and hoisting for vertical dereelers and positioning them in coil cradles requires extra personnel and is time consuming because production must be stopped. When a line isn't running—it's not making any money. To keep your line moving, consider a pallet uncoiler.
February 13, 2007 | By Edmund Herman
Setting the processing variables is different between the net shape and non-net shape processes. While non-net shape variables have to be programmed constantly to change the tool's position in space to follow the unique shape of the part being made, the shape of the part for the draw forming net shape process is built into the die.
February 13, 2007
Excessive fluid on finished parts, which required secondary cleaning operations, and additional cleaning of floors, aisles, and racks in the areas where parts were moved and stored were remedied by installing a roller system with a programmable controller.
February 13, 2007 | By Karen Keller
One of the most difficult problems to overcome in any die protection application is protecting the components from the environment in which they must function. In a typical stamping application, oils, coolants, and other liquids and lubricants often are present that can wreak havoc on components.
February 13, 2007 | By Art Hedrick
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 vents in...