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engineer-mechanical:inventor-cams [2019/03/12 15:26]
jjensen
engineer-mechanical:inventor-cams [2019/03/12 15:26] (current)
jjensen
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 === Cam === === Cam ===
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   * Contact Mechanics includes cams, gearing, rolling-element bearings, and traction/​friction drives are of the same basic mechanical family (CAM Design Handbook by Harold A. Rothbart, p. x)   * Contact Mechanics includes cams, gearing, rolling-element bearings, and traction/​friction drives are of the same basic mechanical family (CAM Design Handbook by Harold A. Rothbart, p. x)
   * "Cams can produce unusual and irregular motions that would be difficult to produce otherwise. Figure 17.19a shows the basic principle of the cam. A shaft rotating at uniform speed carries an irregularly shaped disk called a cam; a reciprocating member, called the cam follower, presses a small roller against the curved surface of the cam. (The roller is held in contact with the cam by gravity or a spring.) Rotating the cam causes the follower to reciprocate with a cyclic motion according to the shape of the cam profile. Figure 17.19b shows an automobile valve cam that operates a flat-faced follower. Figure 17.19c shows a disk cam with the roller follower attached to a linkage to transmit motion to another part of the device. The following sections discuss how to draw a cam profile that will cause the follower to produce the particular motion that is needed."​ (Technical Drawing with Engineering Graphics, 14th Edition by Giesecke, p. 659)   * "Cams can produce unusual and irregular motions that would be difficult to produce otherwise. Figure 17.19a shows the basic principle of the cam. A shaft rotating at uniform speed carries an irregularly shaped disk called a cam; a reciprocating member, called the cam follower, presses a small roller against the curved surface of the cam. (The roller is held in contact with the cam by gravity or a spring.) Rotating the cam causes the follower to reciprocate with a cyclic motion according to the shape of the cam profile. Figure 17.19b shows an automobile valve cam that operates a flat-faced follower. Figure 17.19c shows a disk cam with the roller follower attached to a linkage to transmit motion to another part of the device. The following sections discuss how to draw a cam profile that will cause the follower to produce the particular motion that is needed."​ (Technical Drawing with Engineering Graphics, 14th Edition by Giesecke, p. 659)
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