Dimensioning Sheet Metal Drawings

1953 a manual of engineering.

Dimensioning sheet metal drawings.

For instance in a a guide block fits into a slot in a base. 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. These mating dimensions should be given on the multiview drawings in the corresponding locations as shown in b and c. Ref harv asme 2007 y14 38 2007.

Sheet metal fabrication is the process of forming parts from a metal sheet by punching cutting stamping and bending. This makes matching these dimensions during the modeling stage difficult and time consuming. My boss dimensions from outside the flange walls and thinks. 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.

Those dimensions common to both parts are mating dimensions. Abbreviations and acronyms for use on drawings and related documents asme. How to dimension a drawing. In dimensioning a single part its relation to mating parts must be taken into consideration.

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. Intent of the sheet metal component. In making the layout for this cleat the following points must be kept in mind. Accuracy in the use of the scale rule.

When producing drawings of sheet metal components i dimension from inside the flange walls. However to match the other dimensions that are included it would require your manufacturer to work with incorrect or unachievable sheet metal forming factors. And also find you fold centers more easily. The flat pattern drawing doesn t always list these factors.

The proper relation of views in a drawing. 3d cad files are converted into machine code which controls a machine to precisely cut and form the sheets into the final part.