How is the pitch point on a cam profile defined_________________?
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Answer: B. the point on cam pitch curve having the maximum pressure angle
Explanation
The pitch point on a cam profile corresponds specifically to the location on the pitch curve having maximum pressure angle. This critical point helps engineers evaluate force transmission efficiency and potential follower binding risks. Identifying the pitch point ensures the cam design avoids excessively steep pressure angles during operation. The pitch curve of a cam is generated by tracing the path of the follower center relative to the cam. Pressure angle represents the angle between the follower motion vector and the normal to the pitch curve. High pressure angles increase side thrust loads, making smooth follower movement difficult to maintain.
Generic points on a pitch curve do not necessarily correspond to the location of maximum pressure angle. Pitch circles define reference diameters for gears and cams rather than locating the maximum pressure angle. Stating none of the above is incorrect because the pitch point specifically relates to maximum pressure angle.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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