Standard gear is used as measuring gear when to measure radial composite deviations of the measured gear

but its radial composite deviations can not be measured by using traditional methods

because sensitivity

accuracy

etc of traditional detector can not meet the requirements

and have no more precision reference element can be used

so we need to design ultra-precision gear radial composite deviations detector to measure standard gear.For the high demands of sensitivity and accuracy

the detector system error should be minimized

the analysis

calculation and compensation are carried out

wherein the runout and parallelism of the installation mandrel is the systematic error in the two most

the measurement datum eccentricity and runout of the mandrel will be a direct reflection of radial composite deviations

the runout of positioning surface will increase parallelism error to the two mandrels

if this error is too large will cause point contact in meshing

so the analysis and compensation for the above system error is necessary.