Dimensioning Sheet Metal Drawings

The sheet metal cleat the work of this problem will consist in laying out to full size the views and pattern for a galvanized sheet metal cleat.

Dimensioning sheet metal drawings.

This makes matching these dimensions during the modeling stage difficult and time consuming. Autodesk inventor sheet metal tutorial basics https youtu be zqqqcrntyhk in this tutorial video we will learn how to create drawing base view projected v. 3d cad files are converted into machine code which controls a machine to precisely cut and form the sheets into the final part. The proper relation of views in a drawing.

In making the layout for this cleat the following points must be kept in mind. How to dimension a drawing. Revision of engineering drawings and associated documents asme archived from the original on 2013 04 14. I still believe inside dimensioning is preferable for producing quick non critical drawings of sheet metal components and find it easier myself to read these drawings when i am folding up something for myself and a lot of tradesmen agree but also now believe outside dimensioning.

These mating dimensions should be given on the multiview drawings in the corresponding locations as shown in b and c. 1953 a manual of engineering. Accuracy in the use of the scale rule. I think this is the better way because you can acquire your cutting length without a flat pattern by adding the inside lengths fold allowance.

However to match the other dimensions that are included it would require your manufacturer to work with incorrect or unachievable sheet metal forming factors. Abbreviations and acronyms for use on drawings and related documents asme. For instance in a a guide block fits into a slot in a base. In dimensioning a single part its relation to mating parts must be taken into consideration.

Sheet metal fabrication is the process of forming parts from a metal sheet by punching cutting stamping and bending. Ref harv asme 2007 y14 38 2007. The flat pattern drawing doesn t always list these factors. My boss dimensions from outside the flange walls and thinks.

When producing drawings of sheet metal components i dimension from inside the flange walls. Those dimensions common to both parts are mating dimensions.