Sheet Metal Development Drawing Pdf

A development is a flat representation or pattern that when folded together creates a 3 d object.

Sheet metal development drawing pdf.

Department of training and workforce development. Generally a template is produced from an orthographic drawing when small quantities are required larger quantities may justify the use of press tools and the template will include allowances for bending and seams bearing in mind the thickness of material used. Layout tools are used for drawing fabrication jobs on metal. Introduction to solidworks sheet metal for technology page 14.

The resulting flat pattern gives the true size of each connected area of the form so that the part or structure can be fabricated. This is due to the fact that drawings manipulated on the sheets by a word processor have been adjusted to conform to space limitations. Select flatten from the sheet metal toolbar the sheet metal model flattens out into the surface development used to create it. Are manufactured from thin sheet materials.

When the pattern is cut it can be rolled or folded back into the original object. Many articles such as cans pipes elbows boxes ducting hoppers etc. Parallel line development radial line development triangulation. When a single part is to be produced in quantity a different development procedure is used.

Called also a pattern the plane may show the true size of each area of the object. Figure sm 4 coach for pro engineer pro sheetmetal drawings flat state. Sheet metal drawings usually contain views both of the fully formed part and of the flat pattern as in figure sm 4. 1 1 1 scriber lines are drawn on sheet metal with a scribe or scratch awl coupled with a steel scale or a straightedge.

As sheet metal features are added to the part it remains at the bottom. You will also. Sheet metal construction is the most common application for developments and intersections. This development procedure known as scratching is used when the object to be made requires little or no duplication.

A development is the unfold unrolled flat plane figure of a 3 d object. The drawings on the instruction sheets do not always exactly reflect the specified dimensions however the distances within a drawing are proportional to them. You can place views of the part in both states on the same drawing by creating a multi model drawing. In sheet metal development work some fabrication or repair jobs can be laid out directly on sheet metal.

Some of the more common layout tools are scriber flat steel square combination square protractor prick punch dividers trammel points and circumference ruler.