Content tagged with "stamping-presses"
Results: 35
Article
November 20, 2009
Mild steel to HSS: Not just a spec change - Part II
Figure 1
Conventional systems require more equipment and downstream operations than a servo press with slide motion control because functions such as joining, threading, punching, piercing, and laser marking can be integrated in the press or performed in-die..
Editor's Note: This... Read more...
Article
September 25, 2009
Mild steel to HSS: Not just a spec change - Part I
Figure 1
This schematic shows what happens to a press when cutting high-strength material.
Editor's Note: This is Part I of a two-part article. This installment focuses on the press technology available to form and cut high-strength steel. Part II outlines cost efficiencies that... Read more...
Spanish
August 4, 2009
Article
February 24, 2009
Stamper rebuffs recession with retool
Eagle Wings Industries, Rantoul, Ill., is a Tier 1 and Tier 2 supplier of large underbody assemblies and subassemblies. The company forms chassis parts (front and rear side members, floor reinforcements, I/P assemblies, side pillars, and strut houses); painted trim parts (front suspension... Read more...
Article
September 15, 2008
Article
July 29, 2008
How to run presses faster without increasing scrap
When metal forming companies confront "my labor is cheaper than your labor" price attacks from competitors in developing regions of the world, their production engineers are challenged with finding innovative processes to win business contracts without sacrificing profit margins. One way to... Read more...
Article
July 29, 2008
Die shop transitions to production stamper
What started as fill-in work for idle tool tryout presses has now become full-time production stamping for this die shop. Advanced feed lines and a multifunction software program helped facilitate the successful transition. Third-generation tool- and diemakers Tom and Jerry Wysoczynski broke... Read more...
Article
June 17, 2008
Applying parallelism technology in hydraulic presses
Active leveling control counteracts the negative effects of off-center loading, including premature tool and press wear, breakthrough shock, and reverse shock loading. Stamping shops are driven to offset today's increasing competition and decreasing margins by consolidating operations and... Read more...
Article
May 13, 2008
Driven to integrate
A Parkview Metal Products worker operates a stamping press at the company's facility in Lake Zurich, IL. Parkview produces components for the automotive industry, consumer electronics, and barbecue grills. Changes come often in the steel industry. An item manufactured in the U.S. today can... Read more...
Article
April 15, 2008
Sensors clear the way for high-speed stamping
Tennessee Stampings (Portland) LLC stamps 100 million ride control components (struts and shocks) annually. To sustain high-speed stamping, the company puts sensors on all of its dies to prevent collisions and the production of defective parts that would bring its presses to a screeching... Read more...
Article
March 11, 2008
Coming to your sensors
The most difficult aspect of implementing a stamping sensor program is figuring out where to place the sensor. For example, in this application, two stamping sensors on opposing ends of the die face each other and communicate across an air gap that runs the length of the die. (Photos and... Read more...
Article
December 11, 2007
Article
November 6, 2007
Metalforming lessons learned abroad
Figure 1 Rolling bolsters are used to quickly change dies that might weigh many tons. The U.S. taught the world about mass production, but now it may be time for the teacher to take some notes on flexible approaches to metal forming. After World War II, consumerism in the U.S. required... Read more...
Article
October 9, 2007
Ridin' the storm out
Editor's Note: This is the third article in a three-part series on Tennessee Stampings LLC. Part I in August explored the company's lean practices. Part II in
September discussed how the company's use of sensors and mistakeproofing led to its growth. Part III examines the company's... Read more...
Article
October 9, 2007
Ridin' the storm out Part III
Editor's Note: This is the third article in a three-part series on Tennessee Stampings LLC. Part I in August explored the company's lean practices. Part II in September discussed how the company's use of sensors and mistakeproofing led to its growth. Part III examines the company's facility... Read more...
Article
October 9, 2007
Retrofit Rxfor automaker's aging press
Aging presses can pose challenges, from maintenance to unavailability of obsolete spare parts to performance limitations on new or complex applications. For metal forming processes requiring deep or off-center draw operations, a bed cushion retrofit can resolve some of these challenges.
Old... Read more...
Article
September 11, 2007
Ridin' the storm out Part II
Editor's Note: This is the second article in a three-part series on Tennessee Stampings LLC. Part I explored the company's lean practices. Part II discusses how the company's use of sensors and mistakeproofing led to its growth. Part III, which will appear in the October issue, examines the... Read more...
Article
July 10, 2007
Mechanical presses primed for powerful performances
Metal stampers are using more high-strength steel, which is more difficult to form than mild steel and requires more tooling stations and press tonnage to produce parts. As a result, stampers are moving away from traditional production methods and investing in presses with higher tonnage... Read more...
Article
June 12, 2007
Flexibility in the press shop
The influx of European and Asian automotive manufacturers into the North American market, along with increased outsourcing of stamped parts, is creating both opportunities and challenges for the tier and general stamping industry. To stay competitive, North American stampers must be prepared... Read more...
Article
June 12, 2007
Stamping research gains support
This column was prepared by the staff of the Center for Precision Forming (CPF, formerly ERC for Net Shape Manufacturing), The Ohio State University, Taylan Altan, professor and director. Global competition continues to force the metal forming industry to reduce costs, improve technology, and... Read more...
Article
February 13, 2007
Solving punch breakage problems - Part III
Editor’s Note: This is one article in a three-part series. Part I discusses typical causes of premature failure. Part II covers the roles of cutting shear and retainers. Part III discusses how tool steel selection, press deflection, and heat from processes such as EDM and grinding affect... Read more...
Article
November 7, 2006
Moving material efficiently
Material handling from stamping operations can present unique challenges. Regardless of whether you're handling scrap or finished parts, you need to think about several points to select the right equipment for your particular application. You have many equipment choices today to move,... Read more...
Article
October 10, 2006
Transfer technology
As with profit margins, the margin for error in the metal forming industry is becoming tighter and tighter—choosing the wrong equipment or delaying new technology investments can quickly make a pressroom uncompetitive. And these days, once you get behind, it's almost impossible to... Read more...
Article
July 11, 2006
The modern mechanical press
Photo courtesy of Norlen Inc. A hydraulic press manufacturer made this statement at a recent trade event: "Most mechanical presses function via flywheel motion with a top dead center (TDC) and a bottom dead center (BDC). Full ram extension and full ram retraction always are at the... Read more...
Article
May 9, 2006
Do you need a die transport system?
If your current method for transporting 5- to 100-ton dies is causing injuries and you need to reduce downtime and costs to stay competitive, now might be the time to ask whether you need a die transport system.
Determining the Need
For a stamper, the primary indications that a die... Read more...
Article
May 9, 2006
Hot forming: Strong meets light
One of the challenges of meeting the NHTSA requirements for increased part strength while also meeting the CAFE requirements for decreased weight is that cold-stamped UHSS parts have a tendency to spring back. To meet this challenge, Cosma experimented with hot forming complex parts. The... Read more...
Article
April 11, 2006
Keep it moving
To obtain the best performance from high-productivity equipment, parts and scrap must be moved efficiently, quickly, and reliably. Conveyor jams or slowdowns can offset machine tool productivity and damage high-production equipment. The solution may be a reliable conveyor system that... Read more...
Article
February 7, 2006
Understanding press feeds
A press feed must not only move the proper amount of material into the tool, it must position it correctly into the die—front to back, side to side, and square with the tool. In this case, it must also gently handle prepainted coil to prevent scratching it. Over the last decade... Read more...
Article
December 13, 2005
Bulletproof processes
Alpha Stamping Company is creating bulletproof processes. Sound dangerous? It is for competing medium-sized stampers and assemblers. While some stampers are filing for bankruptcy, Alpha's lean and mean processes have transformed the Detroit-based stamper into a formidable, $50 million... Read more...
Article
December 13, 2005
Straight to the point
Stamping presses and coil feed lines—a match made in productivity heaven. When running smoothly and well synchronized, few manufacturing processes can outperform the stamping line for its cost efficiencies and proficiency. Then again, when individual pieces of equipment comprising... Read more...
Article
December 13, 2005
Coil feed line considerations when stamping HSS
High-strength steel (HSS) rapidly is becoming a popular material for the automotive industry. Why? With its higher tensile and yield strengths, HSS is stronger at all gauges than conventional mild steels. Initially light-gauge HSS was used to replace heavy-gauge mild steel to reduce... Read more...
Article
November 8, 2005
Quick die change and the trend toward larger presses
Flexibility and change have become critical components for success in U.S. manufacturing. Increasingly for contract stampers, these changes include the acquisition of larger mechanical presses. It now is quite common for stampers to use presses with capacities from 800 to 2,000 tons and... Read more...
Article
October 11, 2005
Pairing the right hydraulic press with your application
Choosing the right hydraulic press for your application is critical. Four primary hydraulic press return capabilities are return on position, return on pressure, return on pressure with dwell, and combinations of the three. Shown is a press with a return-on-pressure feature. One of... Read more...
Article
October 11, 2005
Total transfer knowledge
Figure 1 A transfer press can produce large, complex parts or support JIT manufacturing. Historically when a stamping job shop required an automated press system, its choices were limited to progressive-die operations equipped with coil feeders or transfer-die operations with... Read more...
Article
September 13, 2005
Pressing through power failures:
Transfer presses are used in the automobile industry primarily to produce sheet steel body panels. In traditional transfer presses, the press slide and the part transport mechanics are coupled using mechanical transfer. As a result, the vertical motion of the press ram must be coordinated... Read more...
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