Maricopa Community Colleges  CAD222   19966-99999 

Official Course Description: MCCCD Approval: 04/23/96

CAD222  1996 Fall – 2012 Fall

L+L

1 Credit(s)

2 Period(s)

Mechanisms

Selection, design, and drawing of common devices used to transmit motion and power from one mechanical system to another. Covers gears, pulleys, chains and sprockets, cams and linkages.

Prerequisites: (CAD132 and CAD150) or permission of Instructor.

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MCCCD Official Course Competencies:

 

CAD222  1996 Fall – 2012 Fall

Mechanisms

 

1.

Select, design, and draw a spur gear, using CAD. (I, II)

2.

Identify the advantages of common gear types, including pulley and chain/sprocket systems. (III)

3.

Draw a cam displacement diagram, given rise and desired motion/acceleration. (IV)

4.

Draw the desired cam, given a displacement diagram, follower style, and follower offset. (IV)

5.

Design a basic linkage, given desired motion and input information. (V)

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MCCCD Official Course Outline:

 

CAD222  1996 Fall – 2012 Fall

Mechanisms

 

I. Spur gears (basic)

A. Definitions and formulas

B. Gear selection using design charts

C. Wellman's Involute Odontograph

II. Other common gear types

A. Worm gears

B. Bevel gears

III. Pulley systems and chains/sprockets

IV. Cams (basic)

A. Displacement diagrams

B. Cam profiles

1. Followers

a. Roller

b. Pivoted

c. Flat faced

d. Offset

2. Curve rate

V. Linkages

 

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