Thedeveloped length is calculatedaccording to the current bendallowance or K-factor setting. Representation of the sheetmetal part before it is bent. The developed flat length iscalculated by using the formula L1+ L2 + BA = flat length.Īrea next to a bend wherematerial is removed to preventstressing or tearing while bending. The distance around the bendmeasured along the neutralaxis. Represents the theoretical positionof the neutral axis. The metal along this axisdoes not stretch or compressduring bending. 44 of the thicknessfrom the inside surface of themetal. Neutral axis Theoretical axis passing throughthe sheet metal part. N Definition of a sheet metal rule.n Sketch geometry.n Using standard sheet metal tools.n Creating and editing the flat pattern layout.n Creating 2D documentation that represents the 3D folded model and the flat pattern layout. The following list contains some requirements that are common to all sheet metal designs. Use Sheet Metal Defaults to setthe current Sheet Metal Rule, Material Style, and Unfolding Rule. The following illustration shows the Sheet Metal Defaults dialog box. Most sheet metal shops have standards in place that the designer can use while generating the flatpattern. For example, eachsheet metal part requires the generation of a flat pattern to represent the part in its unfolded state.To generate this flat pattern, you must consider the type and thickness of the material, grain direction,and machine setup for bending in order to develop standard bend allowance or K-factor values thatare used in calculating the flat pattern. Sheet metal design requires the implementation of specific methods and concepts. Manufacturing environment.n Describe the overall process for designing sheet metal parts in Autodesk Inventor. N Explain basic sheet metal concepts and common terms used in the sheet metal industry.n Describe various types of manufacturing equipment that is common in a sheet metal
Bend lines (1) are displayed in the flat pattern.Īfter completing this lesson, you will be able to: In the following illustration, a typical sheet metal part is shown in the 3D folded state and the flatpattern layout. You must also consider how the part will be manufactured. For example, when youdesign a sheet metal component, you must create a flat pattern and design the part in such a way thatit can be folded or bent.
Sheet metal design differs from traditional mechanical design in several ways. This lesson describes sheet metal concepts, terminology, and manufacturing equipment, and providesan overview of designing sheet metal parts with Autodesk Inventor. N Create sheet metal rules incorporating style and materials information for common sheet metalparts.
N Describe the two methods for designing sheet metal parts and use them to create sheet metaldesigns in Autodesk Inventor. N Describe common sheet metal concepts, terms, and manufacturing equipment, and use AutodeskInventor to design a simple sheet metal part.
Building upon these foundational elements of design, you can quickly and efficientlydesign your sheet metal parts with Autodesk Inventor.Īfter completing this chapter, you will be able to: This chapter describes the terminology, design methods, and fundamental tools used in the design ofsheet metal parts.