Question
Download Solution PDFThe path of contact in involute gears is
This question was previously asked in
ISRO VSSC Technical Assistant Mechanical 9 June 2019 Official Paper
Answer (Detailed Solution Below)
Option 2 : Along a straight line
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Download Solution PDFExplanation:
- Path of contact is the path traced by the point of contact of two teeth from the beginning to the end of the engagement.
- The path of contact in involute gear is a straight line and the path of contact in cycloid gear is a circle.
- Cycloid curve: A cycloid is a curve traced by a point on the circumference of a circle that rolls without slipping on a fixed straight line.
- Involute curve: Involute curve can be drawn by tracing the free endpoint of the string i.e., point P when a string is unbounded from a circle as shown in the below diagram. So, the path traced by the free end of the string when it is unbounded from a circle is called the Involute curve. The normal at every point of the involute gear tooth profile is tangent to the base circle.
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