【正文】 ear pair integrated deviation and tangential contact conditions, test whether or not to meet the requirements. If necessary, the corresponding software will be based on the measurement results, recalculate and adjust the machining parameters in order to retry all they can be processed into a more satisfied with the quality of products. (2) coordinates of point scanning type bevel gear of the overall measurement error Seiki, Osaka, Japan recently proposed using twodimensional measurement of bevel gear tooth surface measurement to point scanning method has been satisfactory and reliable results. This method has the following characteristics: the workpiece by controlling the rotation, the parallel displacement of probe movement, to avoid the probe and the tooth surface friction between the adverse effects of measurement。 the other for the matingtype movement measurement geometry (ie, meshtype scan measurement point, the method for our first), the apparatus used for singlesided meshing bevel gear tester, equipped with a dedicated measurement bevel gear and measurement software package. (1) coordinate the overall bevel geartype pointtopoint measurement error Gear Measurement Center in, along with threedimensional measurement of bevel gear tooth profile and tooth to the two directions, according to a predetermined interval, the detection of the measured points of the tooth surface (usually the 5 tooth profile, tooth up 9 a total of 45 points) for the geometry error of measurement of points. This method can be avoided and the measured threedimensional probe in the measurement of tooth surface when the impact of friction and the measurement results. The measurement method is based on direct measurement principle, concrete steps are: first bevel gear in accordance with the adjustment of machine parameters and tool geometry parameters to be processed by calculating the large and small bevel gear tooth surface ideal geometric processing parameters。 through the use of acceleration sensors, pickup of vibration and noise measured on the tooth scan frequency harmonic detection. This method is quasidynamic measurement method, which bevel gear for the accuracy of detection is far from plete or accurate enough. Optical encoder used as the base point of view, to cut bevel gears for the accuracy of detection of the integrated singlesided meshing bevel gear tester, such as Germany39。s Sigma 3, have been measured with the function of bevel gear. These instruments have reached VDI / VDE level provided a space measuring uncertainty for more than 2 microns。s P63, or the United States Gleason / mar the GMX275, M amp。s own development, based on the control point movement geometric measurement principle on one side of the bevel gear meshing point scanning technology and technology development based on the overall error of the bevel gear measuring instrument, it is more towards the production of the first line, so that China Bevel Gear measurement theory, the practical application of measurement technology has been further improved and developed. main bevel gear precision measurement method and apparatus Coordinatestyle geometric measurement and analysis equipment Machinery Exhibition into a straight bevel geartype coordinate measuring instrument there earlier products to represented KP42type, but the plex structure of high accuracy. Since 1990, both before and after, CNC Gear Measuring Center to the market, coordinates arc bevel geartype geometry of measurement error is the rapid development and popularization and application. Today39。 Gear Measuring Center is the main measuring instruments. ② Comprehensive engagement measurement accuracy. That is, the bevel gear transmission as a ponent, the accuracy of their transmission, contact spots, a prehensive measurement of the vibration noise. The measuring instruments are mainly onesided meshing bevel gear tester, bevel gear meshing twosided bevel gear measuring and inspection machine rolling. Bevel Gear ③ the overall measurement error. It will bevel gear transmission as a functio