Other names Total index variation Total index tolerance Index deviations Tooth to tooth spacing Tooth to tooth index error Pitch variation Adjacent pitch error
Difference between the most positive and the most negative index value for all teeth Difference between two adjacent teeth index values (+, -) Max. difference between two adjacent teeth index values (+, -) Difference between actual dimensions of two successive right or left flank transverse pitches Max. difference between actual dimensions of two successive right or left flank transverse pitches
ࢌࢇ࢞Ǥ Max. single pitch deviation ࢌ࢛
Definition
Difference between adjacent pitches
ࢌ࢛ࢇ࢞Ǥ
Max. difference between adjacent pitches
ࡸࢻ ǡ ࡸࢻࢉ
Profile deviations (involute) Profile evaluation range Profile test range
ࡲࢻ
Total profile deviation
Profile total error
ࢌࢌࢻ
Profile form deviation
Profile form error
Distance between two nominal profiles enclosed within the profile test range Distance between two involutes of the actual base circle, that enclose the actual involute profile within the profile inspection range
References: AGMA915-1-A02
ࢌࡴࢻ
ࢌࡴࢻ
ࡸࢼ b
Profile slope deviation
Mean profile slope deviation Helix deviation (lead) Helix evaluation range Face width (less chamfers)
ࡲࢼ
Total helix deviation
ࢌࢌࢼ
Helix form deviation
ࢌࡴࢼ
Helix slope deviation
ࢌࡴࢼ
Profile angular error
Mean helix slope deviation
Distance between two nominal profiles that intersect the average profile at start and end points of the profile range Arithmetic mean of the profile slope deviations of three or more equally spaced tooth flanks around the gear’s circumference.
Evaluation range Distance between the two nominal Lead total error leads enclosed within the lead inspection range Distance between two helical lines Lead form error that enclose the actual lead within the lead inspection range Distance (in transverse plane) Tooth alignment tolerance between two nominal leads that Lead parallelism intersect the average lead (helix) at Lead angle error start and end points of the lead inspection range Arithmetic mean of the helix slope deviations of three or more equally spaced tooth flanks around the gear’s circumference.
References: AGMA915-1-A02
Other parameters ࡾ࢙
Variation of tooth thickness
ࡾ
Range of pitch error Pitch variation
ࡲ࢘
Pitch line run-out
Difference between the largest and the smallest tooth thickness of a gear Difference between the largest and the smallest actual size of the transverse pitches of a given flank Radial position difference of a probe contacting all teeth at measuring diameter (pitch diameter). It combines tooth eccentricity in relation to the datum axis and the tooth spacing error.
Page 1 of 10. References: AGMA915-1-A02. Symbol AGMA nomenclature Other names Definition. Pitch deviations. à¢à¡² Total cumulative pitch deviation Total ...
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