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15 Cards in this Set
- Front
- Back
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The drive side of the gear tooth |
Convex Side |
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The coast side of the gear tooth |
Concave Side |
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A line drawn through the centre of the tooth half way between the top of the tooth and the bottom |
Pitch Line |
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Above the pitch line is the... |
Face |
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Below the pitch line is the... |
Flank |
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The small, inner end of the gear |
Toe
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The larger, outer end of the gear |
Heel |
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1. Calculate the number of teeth and get the... |
Gear Ratio |
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Distance the ring gear can be moved without moving the pinion gear. Measured perpendicular to the ring gear tooth with a dial indicator in thousands of an inch |
Backlash |
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Measured with a dial indicator on the back face of the ring gear near the outer edge |
Ring Gear Back Face Runout |
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Checked by using gear marking compound on both sides of four or five of the ring gear teeth. That section of the gear is rotated through mesh with the pinion under some load to check the contact pattern on the drive and coast sides of the ring gear teeth |
Gear Tooth Contact Pattern |
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Contact along the pitch line to the toe |
Increase backlash |
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Contact along the pitch line to the heel |
Decrease backlash |
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Heel Face Contact, Drive Side |
Move Pinion In |
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Toe Flank Contact, Drive Side |
Move Pinion Out |
