Joggle bending

see also offset bend

1. A Joggle Bend is an offset bend in which the two opposite bends are each greater than 90°, and are separated by a neutral web less than 5 workpiece thicknesses apart. [(http://www.toolingu.com/definition-410130-35505-joggle-bend.html)]

2. The dictionary definition of joggle is a joint between two pieces of building material formed by a notch and a fitted projection, or it is the notch or the projecting piece used in such a joint. [(American Psychological Association (APA):joggle. (n.d.). The American Heritage® Dictionary of the English Language, Fourth Edition. Retrieved April 16, 2008, from Dictionary.com website: http://dictionary.reference.com/browse/joggleChicago Manual Style (CMS):)]

3. A joggle is an offset formed to provide for an -overlap of a sheet or angle which is projecting in the same plain. The inside joggle radii should be approximately the same as used for straight bending. [ [http://www.tpub.com/content/aviationandaccessories/TM-43-0106/css/TM-43-0106_172.htm 3-81. DRAW FORMING ] ]

II. Tool/work Material Interaction

III. Typical part geometry

The joggle piece looks almost like a small metal long block put under the workpiece and on top of a base plate. The actual bending process is quite simple. First, place the joggle under the workpiece and clamp the workpiece to the base plate or table. Your workpiece will be off the base plate, even with the height of the joggle. Next, add some heat to the metal that needs the joggle bend. To create the actual bend, however, use either a hydraulic ram or anything strong enough to push the non-clamped workpiece down without breaking it. This process creates a joggle bend in the metal with angles greater than 90 degrees. The cross section looks something like this: -------------____________. An easy way to remember this is to think of a jogger running down a flat street. Then the street goes down hill for a little while and then flattens out again. That is what the workpiece will look like when it is finished.

IV. Typical Work Materials

Joggled materials can be made out of anything willing to bend without breaking, but the most common type of material this process is used for is sheet metal.

V. How Does This Operation achieve workpiece function

There are many benefits to having a part joggled instead of any other operation. For example, joggled features reducemodeling time from days to hours for complex airframe parts. [http://www.plm.automation.siemens.com/en_us/Images/nx%20aerospace%20sheet%20metal%20fs%20W%204_tcm53-4290.pdf)] . Aircraft parts benefit greatly from being joggled because most of these parts need to be offset anyways and that's what the joggle bend does. It is one of the easiest processes. All you need is a bend in the metal and if you have the right joggle tool, it's no problem at all. This process increases the part’s strength, hardness, and possibly resistance to wear. This little bend makes the part look more professional as well.

----References

(http://www.toolingu.com/definition-410130-35505-joggle-bend.html)

American Psychological Association (APA):joggle. (n.d.). The American Heritage® Dictionary of the English Language, Fourth Edition. Retrieved April 16, 2008, from Dictionary.com website: http://dictionary.reference.com/browse/joggleChicago Manual Style (CMS):)

(http://www.plm.automation.siemens.com/en_us/Images/nx%20aerospace%20sheet%20metal%20fs%20W%204_tcm53-4290.pdf)

References