According to Bildt, the company finding out brush and slip ring performance evaluation device works, it is evident that includes turntable drive spindle rotation accuracy, including the drive shaft and the friction torque measuring small shaft concentricity between the measured friction a disgrace to turn a small shaft torque accuracy and measuring friction torque in a small shaft bearing assembly supporting bearing friction torque own size, is the impact of dual brush and slip ring electrical contact material properties and friction and wear, comprehensive performance evaluation of the quality of the key factors.
In response to these several key factors, the following main measures taken
1, the drive spindle bearing assembly and test a small friction torque shaft bearing assembly supporting bearings are made of high-grade precision thrust ball bearings huixin.
2, the drive spindle bearing assembly in the main parts - the shaft and the bearing body and the bearing inner and outer rings are made with real distribution processing, shaft and bearing inner ring with the Department sought assurances that the fight is not greater than the surface roughness gap · reach climbing bearing body and the bearing ring unitary Bu Xi has sought assurances of not more than an aggregate fight at the gap surface roughness required to achieve grasping bearing assembly, you can then use the compression nut and cushion covers to adjust the angular contact ball bearings work clearance. This will cause the drive spindle with high precision rotation, smooth characteristics.
3, measuring the friction torque is small, the main shaft bearing assembly parts - scroll and housing, also uses drive spindle shaft and bearing assembly in a bearing body Cheung design requirements. This ensures that the friction torque measurement accuracy requirements of small shaft rotation.
4, in order to ensure that the drive shaft and the friction torque measuring concentricity between small shaft does not exceed the design requirements in the design and processing special focus on its main parts with important influence in the cooperation between the arts. Ie the drive spindle bearing assembly bearing body and with it the mating surface, small friction torque measuring shaft bearing assembly with the bearing and the upper plate with its seat, as well as three pillars are made with real processing. Main design accuracy requirements are basically consistent with the drive spindle bearing assembly positioned three pillars length dimension to record length.
5, in order to ensure that the slip ring friction rotation accuracy of the test piece, the upper end of the drive spindle mounted on the turntable design, using the main drive shaft to ensure that its outer surface with an inner bore and the bore and the friction member and the end portion fitted precision parts, in accordance with this design consideration is the actual need.
6, to ensure both the brush plate between the brush and slip ring impose appropriate load, but also make fixed thereon three brushes on the slip ring operating within the same torus, which is to ensure that the brush and Dual slip ring electrical contact material properties and tribological comprehensive performance evaluation of the quality of such an important factor. To this end, the brush plate and the brush sleeve designs have focused on the actual requirements and effects. Brush a small plate and friction torque measuring shaft that is used with the Department kingpin sliding fit with the real requirements of processing, both to ensure the brush plate in the vertical shaft can slide freely up and down, but also to minimize with the gap between them.
The six major design measures and other design measures
The use, to ensure the performance evaluation of the brush and slip ring means the overall design requirements to complete full park plays an extremely important role.
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