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・ Spur (botany)
・ Spur (disambiguation)
・ Spur (horse)
・ Spur (lunar crater)
・ Spur (topography)
・ Spur (zoology)
・ Spur Award
・ Spur Award for Best Drama Script
・ Spur Award for Best Novel of the West
・ Spur Award for Best Short Fiction
・ Spur Award for Best Western Novel
・ Spur Battery
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・ Spur cell hemolytic anemia
・ Spur des Falken
Spur gear corrected tooth
・ Spur Hill
・ Spur House
・ Spur in die Nacht
・ Spur Independent School District
・ Spur Industries, Inc. v. Del E. Webb Development Co.
・ Spur of the Moment
・ Spur of the Moment (album)
・ Spur of the Moment (film)
・ Spur of the Moment (play)
・ Spur of the Moment (The Twilight Zone)
・ Spur Point
・ Spur Posse
・ Spur route
・ Spur ryal


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Spur gear corrected tooth : ウィキペディア英語版
Spur gear corrected tooth

Spur gear teeth are manufactured by either involute profile or cycloidal profile. Most of the gears are manufactured by involute profile with 20° pressure angle. When two gears are in mesh at one instant there is a chance to mate involute portion with non-involute portion of mating gear. This phenomenon is known as INTERFERENCE and occurs when the number of teeth on the smaller of the two meshing gears is less than a required minimum. To avoid interference we can have undercutting, but this is not a suitable solution as undercutting leads to weakening of tooth at its base. In this situation Corrected gears are used. In corrected gears Cutter rack is shifted upwards or downwards.
In the case of MOD 4.0 spur gears:
Normal spur gears (over 17 teeth) have a PCD equal to MOD x Number of Teeth
Corrected spur gears (under 17 teeth) have a PCD equal to MOD x Number of Teeth + MOD
There are two types of corrected gears:
#S0 gearing (x1+x2=zero)
#S gearing (x1+x2 not equal to zero)
==References==



抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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