Download Sheet metal bending radius tolerance







<p>When the sheet metal is put through the process of bending the metal around the bend is deformed and stretched. As this happens you gain a small amount of total length in your part. Likewise when you are trying to develop a flat pattern you will have to make a deduction from your desired part size to get the correct flat size. The Bend Allowance is defined as the material you will add to the actual leg lengths of the part in order to develop a flat pattern. The leg lengths are the part of the flange which is outside of the bend radius. When we calculate the Bend Allowance we find that it equals. In order to develop sheet metal bending radius tolerance flat pattern we add. As you can see the Bend Allowance and Bend Deduction are closely related below. Below is our simple Bend Allowance Calculator, it works by inputing the Material Thickness, Bend Angle, Inside Radius and K-Factor. It simply processes these variables through the equations we will discuss below. Note that the Bend Angle is the excluded angle, not the included angle. The Bend Allowance Formula takes into account the geometries of bending and the properties of your metal to determine the Bend Allowance. The Material Thickness will be measured in decimal form, not by the sheet metal bending radius tolerance number. The Bend Angle will be something that you determine based on what the complimentary angle of your part is going to be. It is important to convert from the included angle to the complimentary angle before performing any calculations. The Inside Radius will be the finished radius of the included angle. Finally the K-Factor is a property of the material which you are bending. This property determines how the material is stretched when bending. Because Bend Allowance is often confused with Bend Deduction it is important to understand which value you intend on working with. Once you understand what these values represent you can use them to accurately and quickly develop flat patterns for your sheet sheet metal bending radius tolerance parts. Creating a chart with your standard values is a key component of speeding up this process.</p>

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Sheet Metal Design, Mechanical Tolerances and Overview | Engineers Edge
Sheet Metal Design, Mechanical Tolerances and Overview | Engineers Edge