15 Detail Drawings Permission granted to reproduce for educational use only. Explain terms and...

15 Detail Drawings

Permission granted to reproduce for educational use only.

• Explain terms and standards related to various types of drawings used in industry.

• Describe how detail drawings are defined and categorized in industry.

• Identify the unique characteristics of casting and forging drawings.

• Identify the unique characteristics of purchased part control drawings.


• Identify the unique characteristics of modifying drawings.

• Describe the unique characteristics of pattern development and welding drawings.

• List and describe other specialized types of drawings used in industry.


Working Drawings

• Detail drawings contain complete information about producing a part

• Assembly drawings contain information about the assembly of two or more parts


Detail Drawings

• Includes:– Name of the part– Shape description– Size description– Notes– Materials– Special requirements


Detail Drawings

• Monodetail drawing: Contains complete information about producing one part

• Multidetail drawing: Contains information about producing two or more related parts; not very common, but allowable for situations such as specially matched parts


Casting Drawings

• Shows the dimensions necessary to create the mold of a cast part


Machining Drawings

• Shows the dimensions necessary to convert a casting into a finished part


Casting/Machining Drawings

• One detail drawing may show both the casting dimensions and the machining dimensions


Control Drawings

• Shows the specifications of a purchased part

• May serve as a bid document


Modifying Drawings

• Shows the specifications for making one part from another or for making changes to a part once delivered


Pattern-Development Drawings

• Shows the specifications for making the flat pattern of a folded part


Welding Drawings

• Shows the separate pieces that will be welded together

• Appears somewhat like an assembly drawing


• What are the two basic types of working drawings?

Detail and assembly


• What is the difference between a monodetail drawing and a multidetail drawing?

A monodetail drawing contains only one part, while a multidetail drawing shows more than one multiview drawing on a single sheet.


• List at least six types of detail drawings.

Casting and forging, machining, purchase part control, altered-item, modification, pattern-development, welding, installation, selected-item, tube-bending, matched-set, and contour-definition drawings.


• What is the difference between a casting drawing and a machining drawing?

A casting drawing shows the dimensions necessary to create a mold of the part. A machining drawing shows the dimensions needed to convert a casting into a finished part.


• What is the purpose of a purchased part control drawing?

To document various engineering requirements to assure interchangeability of items each time they are purchased.


• What does a modifying drawing describe?

A part that is manufactured not from raw materials, but by altering another part.


• Why would a pictorial view be shown on a pattern-development drawing?

To show the part in its folded (finished) state


• What does a contour-definition drawing show?

The data needed to define or build a contoured or sculpted surface

15 Detail Drawings Permission granted to reproduce for educational use only. Explain terms and...

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