However for typical parts meant to be cost effective and easily produced the following tips should be useful.
Sheet metal flange height.
In low carbon steel sheet metal the minimum radius of a bend should be one half the material thickness or 0 80 mm.
Mild sheet metal low carbon monel sheets annealed.
Metal thickness 2024 0 aluminum formed before heat treatment.
Columnist gerald davis continues a discussion of 3 d cad and precision sheet metal manufacturing in part iii of a four part series focusing on design guidelines for sheet metal.
A cutout or the edge of your flange to your bend.
Avoid large sheet metal parts with small bent flanges.
If you have any questions or want to discuss your design contact us.
Height of curved flange min.
We offset height tolerance at 0 012 in.
When designing parts for laser cutting one should not make holes smaller than the thickness of the material.
The minimum distance between two counterbores is eight times the material thickness.
Determine your minimum bend by measuring the distance from your closest feature i e.
Too small a flange height that is the use of a bending die is also not conducive to forming generally the height of the flange is l 3t including the wall thickness.
Step processing method some of the lower profile sheet metal z shaped steps are bent and the processing manufacturers often use simple molds to machine on punch presses or.
Height of curved flange min.
Design for manufacturability sheet metal guidelines bends for the ease of manufacturing multiple bends on the same plane should occur in the same direction.
0 304mm from top of sheet to top of form and recommend an offset of 0 030 in.
Offsets are used to create z shaped profiles in sheet metal parts.
Bends in sheet metal are manufactured using sheet metal brakes.
Bends are the most typical feature of sheet metal parts and can be formed by a variety of methods and machines which negate the absolute need for some of the below tips.
Choose a bend radius that matches your minimum bend.
Previous editions covered economic order quantity in batch production and the accuracy of things made from rolled sheet stock.
Next month concludes with the pros and cons of hems jogs and forming tools.
We are here to help.
Sheet metal parts with a minimum of 0 9mm to 20mm in thickness can be manufactured.
The minumum flange length is based on the die used to bend.
Avoid large sheet metal parts with small bent flanges.
It shall be equal to three times of sheet thickness plus bend radius.
A 1 degree tolerance on all bend angles.
Minimum sheet metal flange bend length is required to avoid cracks in the bending area.
Thick ness min bend radii min.
