Exam 19: Precision Sheet Metal Drafting

What specific material does the term sheet metal represent?

Define hem.

How can phantom line be used to represent a flat pattern on a drawing?

Typically, where is the neutral axis?

Describe nesting blanks.

Describe a drawing showing only the flat pattern using rect- angular coordinate dimensioning without dimension lines and tabular feature.

What is a roll form?

Give the basic function of grid lines.

Define neutral axis.

Describe sheet metal parts.

Define the K-factor.

Define the centerline of bend and describe how it is drawn. MeTal DrafTing ProbleMs

Describe undimensioned drawings.

Describe the following precision sheet metal applications: tables, the use of a hole table, bend table, and a drawing showing a flat pattern with manufacturing information ex- tracted to a table.

Define flange.

Describe how plate material is different from sheet metal.

What is the purpose of a bend allowance calculation?

Define lancing.

Show the media note that should be placed on all undimen- sioned drawings.

Briefly discuss how the term precision sheet metal drafting is used in this chapter is different from the term associated with sheet metal parts used in construction applications.