Improve coordination method

Improve coordination method
In order to improve the actual matching accuracy of bearing installation, it is necessary to use measuring methods and measuring tools that do not deform the bearing to carry out actual precise measurement of the matching surface dimensions of the inner hole and outer circle of the bearing, and the measurement of the inner diameter and outer diameter can be carried out All the items are measured, and the measured data are comprehensively analyzed, based on which, the dimensions of the bearing installation parts of the shaft and the seat hole are precisely matched. When actually measuring the corresponding dimensions and geometric shapes of the shaft and seat hole, it should be carried out under the same temperature conditions as when measuring the bearing.
In order to ensure a high actual matching effect, the roughness of the shaft and seat hole matching the bearing surface should be as small as possible.
When making the above measurements, two sets of marks that can indicate the direction of the maximum deviation should be made on the outer circle and inner hole of the bearing, and on the corresponding surfaces of the shaft and the seat hole, on both sides close to the assembly chamfer, so that In the actual assembly, the maximum deviation of the matching two sides is aligned in the same direction, so that after assembly, the deviation of the two sides can be partially offset.
The purpose of making two sets of directional marks is to comprehensively consider the compensation for the deviation. Even if the rotation accuracy of the two ends of the support is improved, the coaxiality error of the seat hole between the two supports and the shaft journals at both ends can be partially eliminated. . Surface strengthening measures on the mating surface, such as sandblasting, using a precision plug with a slightly larger diameter to plug the inner hole once, are all conducive to improving the fitting accuracy.