Sheet Metal Development Drawing Pdf

Figure sm 4 coach for pro engineer pro sheetmetal drawings flat state.

Sheet metal development drawing pdf.

This development procedure known as scratching is used when the object to be made requires little or no duplication. Layout tools are used for drawing fabrication jobs on metal. A development is a flat representation or pattern that when folded together creates a 3 d object. This is due to the fact that drawings manipulated on the sheets by a word processor have been adjusted to conform to space limitations.

The drawings on the instruction sheets do not always exactly reflect the specified dimensions however the distances within a drawing are proportional to them. 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. You will also. When a single part is to be produced in quantity a different development procedure is used.

When the pattern is cut it can be rolled or folded back into the original object. The resulting flat pattern gives the true size of each connected area of the form so that the part or structure can be fabricated. You can place views of the part in both states on the same drawing by creating a multi model drawing. Some of the more common layout tools are scriber flat steel square combination square protractor prick punch dividers trammel points and circumference ruler.

Parallel line development radial line development triangulation. Called also a pattern the plane may show the true size of each area of the object. Methods of development of surfaces are. Introduction to solidworks sheet metal for technology page 14.

Construction in full light lines. A development is the unfold unrolled flat plane figure of a 3 d object. Are manufactured from thin sheet materials. Create a drawing of the sheet metal part.

1 1 1 scriber lines are drawn on sheet metal with a scribe or scratch awl coupled with a steel scale or a straightedge. In sheet metal development work some fabrication or repair jobs can be laid out directly on sheet metal. Sheet metal drawings usually contain views both of the fully formed part and of the flat pattern as in figure sm 4. Many articles such as cans pipes elbows boxes ducting hoppers etc.

Department of training and workforce development.