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Stationary parts don't make moneySeeing bins of parts lying around in your shop? Maybe it’s time to get away from the large-batch method and try one-piece flow. Rather than make a large quantity of Component 1, then Component 2, then Component 3, while a welder downstream waits for Component 3, you could set up a system of...
Publish date: November 9, 2012 |
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Assessing the arcLarge-radius bends are used in many places, such as appliance handles and automobile components. For measuring large-radius bends, fabricators have at least three options: go/no-go fixtures, entering the bent part’s measurements into a CAD program and using it to calculate the radius, and a...
Publish date: December 9, 2011 |
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Holding the dies
Publish date: June 24, 2011 |
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Getting a grip on tube bending
Publish date: April 27, 2011 |
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Ironing the wrinkles out of copper tubingA wiper die is helpful for making wrinkle-free bends. Understanding how one works can help you decide if you need to use one.
Publish date: March 10, 2011 |
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Get the slug outPunching a hole in a tube is one thing; getting the slug out is something else altogether. Even if most of the slugs exit without a problem, the occasional hanging slug can cause a serious problem. Two methods are mechanical force and air pressure.
Publish date: January 31, 2011 |
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Sizing up the jobAccounting is straightforward, but it’s not iron-clad; fabricators have latitude in the accounting system they use to bid on contracts. A bottom-up approach, one that analyzes all the costs that go into making a component, is suitable for many parts. A top-down approach looks at the part and...
Publish date: November 1, 2010 |
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The axis of safetyA tube bender can be considered a collection of power presses and, as such, it needs more than just a few conventional barriers between the operator and the machine. Safety mats, interlocked switches, emergency-stop switches, and interlocked side plates are a few of the safety devices available...
Publish date: September 16, 2010 |
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Feeding the processWhether a bending process starts with a cut length of tubular product or a coil, gravitational or torsional forces can lead to unwanted variations in the finished product. In the case of gravity, tube supports can counteract it; for torsion, it’s a matter of matching the coil’s output to the...
Publish date: July 9, 2010 |
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Doing more with lessLoading and unloading tube for fabricating often is a manual process. Because labor rates in the U.S. are higher than those in many other countries, manual loading and unloading isn’t competitive. Using an automatic loader/unloader can change that, moving an operation from red to black.
Publish date: April 29, 2010 |
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Making a workhorse run
Publish date: February 9, 2010 |
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Putting a few end forming basics to workWhether maintaining or changing the OD, knowing the basics of end forming—especially friction and lubrication—can help achieve a successful result.
Publish date: March 9, 2009 |
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Coax FactsContinuous improvement and statistical process control are useful,time-tested techniques—they have been used since the 1950s—buttheir use must be tailored to specific applications. For example, atypical manufacturing metric is parts per minute, but many rollformers should measure feet...
Publish date: January 1, 2009 |
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The ins and outs of extrusion bendingExtrusions can be tricky to bend and handle. Paying close attention tobender selection, die design, programming, and material handling can help to ensure efficient and productive bending.
Publish date: December 12, 2008 |
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Serpentine bending in productionBending serpentine profiles—successive 180-degree bends, which typically are used in refrigeration systems—can be a challenge. By their nature, they tend to cause interference among the various bend dies, and they can be difficult to handle. Good planning in selecting a bender,...
Publish date: November 25, 2008 |
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From the CAD station to the production floorConventional tube bending data, regardless of format, is entered manually and therefore susceptible to errors. A modern approach involves using a CAD system to generate a STEP file, which the CAD program exports directly to the bending machine. This method is fast and eliminates errors. The...
Publish date: July 15, 2008 |