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Roll reversal: From air feeds to servo roll feeds
The air-powered gripper feed was once the standard press feeding device in most stamping operations. It was simple and cost- effective. Servo-powered roll feeds have emerged as an attractive alternative, especially as the technology has proven...
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Coil processing equipment—new or retrofit?
If existing coil feeding equipment is functioning, but productivity needs a boost, stampers can achieve measurable gains in their production efficiency through various types of upgrades to their coil handling and feeding equipment, including...
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Precoated stainless steel improves tactile domes forming
Situation
Tactile domes are used in communication devices as the switch element incorporated into membrane switches and control panels. Generally, they are made of 301 stainless steel preplated with 3 to 7 microns of nickel or silver....
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Stamper rebuffs recession with retool
Richland Manufacturing, a subsidiary of Eagle Wings, a tiered automotive supplier, retooled with a new stamping press cell equipped with an electromagnetic die handling system. The retool effort also included installation of a 330-ton tie-rod type...
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What's up with scrap (besides price)?
Today's escalated metals prices have made scrap a hot issue. Multi source article covers new trends and old favorites in efficient scrap handling and in minimizing scrap
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Optimizing a single probe, gap-tolerant, double sheet detector system
Detecting the presence of two sheets in a press feeding operation uses scientific principles, but the process is not an exact science. A typical press-feeding situation involves an air gap between the detector and the first sheet in the stack or...
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Spec the correct feed line
Many factors are taken into consideration when ordering feed lines. To show how to spec this equipment could fill up this magazine, but this article is intended to show what information to supply to get the best possible results. Ordering the...
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Understanding press feeds
Major technology shifts in how stamping presses are fed have allowed press feed technology to evolve, enabling stampers to realize increased processing speeds, improved processing flexibility, easier setup, and better quality and reliability. Even...
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Coil feed line considerations when stamping HSS
With its higher tensile and yield strengths, HSS is stronger at any given gauge than conventional "mild" steels. Initially, lighter-gauge HSS was used to replace heavier-gauge mild steel to reduce weight in many automotive parts, and this...
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Appliancemaker reduces downtime with stamping press feed system
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...
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Maximizing a coil fed press
Coil-fed stamping presses are nothing new, but coil feeding processes have changed a lot since the days when press feeders were driven mechanically by crank motion. Influencing these processes are differences between transfer and progressive tooling.
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Handling the rush
Think delicate: an antique vase, velvet gloves, the sweet sound of string music. Then imagine a typical stamping operation: bam-bam, metal on metal, all day long.
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Adding flexibility to stamping operations
You're not afraid of automation. You already have automated several cells around high-volume parts. But now you have a new challenge: Integrate several large presses while still maintaining the flexibility to run lower-volume parts?
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High-speed feeding techniques
Gripper or roll-type feeds operate on the principle of feeding force, which is a product of the coefficient of friction between the grippers or feed rolls and the material being fed. Reviewing each force as a factor of the feeding equipment or...
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Press feed options for stampers
The two basic press feed types commonly in use today are roll feeds and gripper feeds. Roll feeds, as the name implies, use rollers to move the material into the tool, while gripper feeds employ gripping clamps and a linear motion to move the strip.
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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.
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