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Drawbar water edge tells about Bushing technology related knowledge?

2021-04-08 17:03

How much do you know about Bushing's technology? Let’s follow the editor of Drawbar water edge to have a simple understanding!
1. Tighten the radial runout of the Bushing outer cone facing the inner hole (that is, the wall thickness difference) should be high-precision, otherwise the rotating shaft will have centripetal force due to the fair amount, and it will not be able to run joltly, with large vibration, loud noise, and wall thickness. A difference of "0" is an ideal form. The larger value bearing inner diameter under 65 in the national standard rules is about 1/2 of the larger value of the bearing standard group's clearance, which is very similar to the larger clearance value of the C-level accuracy. Therefore, the adapter sleeve products qualified by the national standard are used in fine It is not possible to match the bearing with high load.
2. The straightness of the outer cone and inner hole of the adapter sleeve should be good, that is, the shape and position tolerance should be good, and the cylindricity precision should be good. There is no rule in the national standard. Any single cross-sectional dimension is qualified in the tolerance field, so it is formed The straightness of the outer cone surface is not strictly controlled, especially when the outer cone surface is cut and ground. The roughness of the blank itself is not good, the grinding wheel is not well corrected, and the straightness of the appearance is very poor. Ordinary enterprises have no profilometer inspection, so this The project has a big problem in the products of the adapter sleeve industry in China, which seriously affects the matching accuracy and the stability of the matching, and the bearing function is also poor.
3. The thread locking function of the adapter sleeve. The matching bearing is to move the end surface of the bearing inner sleeve through the rotation of the lock nut to tighten the taper of the adapter sleeve and the inner hole of the bearing to achieve the purpose of fixing the bearing on the rotating shaft. Therefore, the bearing nut and the thread of the tightening Bushing must be well matched, and it must meet the national standard requirements of ordinary threads.
The above is the introduction of Bushing technology by the editor of Drawbar water edge, I hope you can learn more.

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