Dimensioning Sheet Metal Drawings

Some critical dimensions that need to be considered when setting up sheet metal in cad software are sheet metal thickness the k factor and bend radius.

Dimensioning sheet metal drawings. A list usually tabular and often on the drawing if not accompanying the drawing on a separate sheet listing the parts needed in an assembly including subparts standard parts and hardware. 15 satisfactory style of lettering for sheet metal drawings. My boss dimensions from outside the flange walls and thinks this is the. When producing drawings of sheet metal components i dimension from inside the flange walls.

One needs to check that these factors are consistent with the tooling that will be used in manufacturing. 9 9 direction of dimension figures. Horizontal dimensions should be read from the bottom of the sheet and vertical dimensions from the right hand side of the sheet as in fig. There is no consistently enforced distinction between an l m a bom or a p l.

These dimensions may seem helpful but after your manufacturer makes bend deductions based on their capabilities and other bending factors your dimensions will become unusable. And also find you fold centers more easily. Jun 8 2019 explore h g raghunandan s board sheet metal drawing on pinterest. When producing drawings of sheet metal components i dimension from inside the flange walls.

Dimension figures and notes are lettered horizontally and are read from the bottom of the sheet. In the aligned system all dimension figures are aligned with dimension lines so that they may be read from the bottom or right side of the sheet. 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.