Solidworks Sheet Metal Bend Deduction Table

Bend deduction allows the user to calculate the size of the developed sheet by subtracting a value from the external dimensions of the sheet.

Solidworks sheet metal bend deduction table.

The bend deduction formula takes into account the geometries of bending and the properties of your metal to determine the bend deduction. Bend tables were the original tables used by solidworks to pull bend deduction bend allowance or k factor values for use in calculating the flat pattern. With bend calculation tables you can define different angular ranges assign equations to those ranges and calculate the developed length of the part. A great tool available to solidworks sheet metal users is the sheet metal gauge table in this table users can configure a microsoft excel spreadsheet to represent the appropriate sheet metal wall thickness based on material and gauge values.

Users can also specify the available default bend radius based on available tooling. If the thickness of the part or bend angle falls between values in the table the software interpolates the values to calculate the bend allowance. A few items to note about bend tables in a text file. In the below example we will specify a bend deduction of 5mm so our developed sheet size would be 195 100 100 5 the maximum value the bend deduction can be is 2 x the outside setback.

Bend allowance and bend deduction value you can specify an explicit bend allowance or bend deduction for any sheet metal bend by entering the value when you create the bend. The material thickness will be measured in decimal form not by the gauge number. Solidworks has provided some sample tables that you can use as a reference to make yours. By definition the bend allowance is the arc length of the bend as measured along the neutral axis of the material.

The values in this table do not represent any actual bend allowance values. You can calculate the developed length of sheet metal parts using bend calculation tables.