K-Factor

Bend Allowance, Bend Deduction and K-Factor Tables in SOLIDWORKS

SOLIDWORKS Sheet Metal Bend Table

In this series of blog posts it was discussed what different terms like Bend Allowance, Bend Deduction and K-Factor mean and how we can calculate them for a specific sheet. You can read the previous post: What are Bend Allowance, Bend Deduction and K-Factor? And the post that explains how to calculate them here. In this post you will see how to use these calculated values in order to make our own SOLIDWORKS Sheet Metal Bend Table. Bend tables and gauge tables come into play when working with sheet metal parts in SOLIDWORKS. The location where SOLIDWORKS reads these tables from is set in Options > System Options > File Locations. Select “Sheet Metal Bend Tables” or “Sheet Metal Gauge Table” to see the location where SOLIDWORKS reads the tables from. Bend Tables Bend tables were the original tables used by SolidWorks to pull Bend Deduction, Bend Allowance or K-Factor values for use in…

Read More...

Calculating Bend Allowance, Bend Deduction, and K-Factor

Calculating Bend Allowance

In my previous post I talked about K-Factor, Bend Allowance and Bend Deduction and what they mean in sheet metal design. Now let’s see how we can obtain these values for a specific sheet. As I mentioned in my last post you need to do some tests to calculate these values for a specific sheet. These tests include bending some samples and then do some measurements and calculations. Consider a sheet with a 20 mm thickness and a length of 300 mm as shown in Figure 1. We are going to review three bending scenarios with three different bending angles; 60, 90 and 120, and we will calculate K-Factor, Bend Allowance and Bend Deduction for them. The bending tool has a radius of 30 mm which means that our Inside Bend Radius (R) is 30 mm. Let’s start with 90 degrees bend which is the most simple scenario. 90 Degrees…

Read More...

What Are Bend Allowance, Bend Deduction and K-Factor?

In a series of posts we are going to review the most important sheet metal design terminology — Bend Allowance, Bend Deduction and K-Factor. In this post I will review what these terms mean and in the next post I will show you how to calculate and use them in SOLIDWORKS. In sheet metal bending process when metal is bent the material along the inner bend radius is going to undergo compression and the material along the outer bend radius will be stretched. The line where the transition from compression to stretching occurs is called the neutral axis or the neutral sheet. The neutral axis is where neither the material stretches nor compressed. Hence, the length of the neutral axis stay the same before and after bending operation. The location of the neutral axis varies and is based on the material’s physical properties and its thickness. It is important to know the location…

Read More...

Total Control for the Bend Allowance in Multibody Sheet Metal Parts

You have to upgrade to SolidWorks 2013 SP3.0 in order to have total control over the bend allowance for multibody sheet metal parts. Note: Many thanks to Anna Wood for making me aware about this new functionality!!! While the ability to control the thickness, default radius and the bend allowance at the body level has been implemented in SolidWorks 2013 SP0, the workflow was not really intuitive for the user (read this article for more information about how this functionality worked in SolidWorks 2013 SP0, SP1 and SP2). Starting with SolidWorks 2013 SP3.0, there is a new checkbox for the bend allowance at the body level that can control where the information is coming from: either from the Sheet Metal feature at the part level…

Read More...

Want to become a SOLIDWORKS Expert?

Take a LIVE Online Training Course from Javelin