High-reliability compound sealing structure for spindle bearing and processing technology

Abstract

The invention discloses a high-reliability compound sealing structure for a spindle bearing and a processing technology, belonging to the technical field of bearing manufacturing. The high-reliability compound sealing structure is characterized in that a circle of sealing groove (6) is formed in each of the inner walls at the two ends of a bearing outer ring (1), a circle of hobbing (8) is formed in the inner hole wall on the outer side of each sealing groove (6), a sealing component is formed by the combination of a steel dustproof cover (4) at an outer ring and a rubber sealing ring (5) at an inner ring, the steel dustproof cover (4) is a deformable punching assembly type dustproof cover, the outer ring of the steel dustproof cover (4) is punched to be inlaid into the sealing grooves (6) of the bearing outer ring (1), the edge of the outer ring is in occlusion connection with the hobbing (8) of the bearing outer ring (1) together, and the inner ring of the steel dustproof cover (4) is inlaid into a connecting groove in the outer ring of the rubber sealing ring (5) and the steel dustproof cover (4) and the rubber sealing ring (5) can be connected to form a whole body. The high-reliability compound sealing structure for the spindle bearing has good sealing reliability and the capability of preventing a circling phenomenon, dusts and water; and in addition, with the adoption of the processing technology, the working efficiency is improved, and the sealing strength is strong.

Description

technical field [0001] The high-reliability composite sealing structure and processing technology of a main shaft bearing belong to the technical field of bearing manufacturing, and specifically relate to a composite bearing sealing structure and processing technology. Background technique [0002] Bearing is an important basic component of various mechanical equipment. Its accuracy, performance, life and reliability play a decisive role in the accuracy, performance, life and reliability of the main engine. At the same time, the sealing of the bearing is also one of the important technical indicators. , the existing bearing seals are mostly sealed by a single dust cover, and there is also a composite seal structure of the dust cover and the sealing ring, but there are defects of poor sealing effect or low strength, especially for the harsher working environment. Under normal circumstances, the bearings often have bad seals that lead to grease overflow or low-strength bearing...

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Problems solved by technology

[0002] Bearing is an important basic component of various mechanical equipment. Its accuracy, performance, life and reliability play a decisive role in the accuracy, performance, life and reliability of the main engine. At the same time, the sealing of the bearing is also one of the important technical indicators. , the existing bearing seals are mostly sealed by a single dust cover, and there is also a composite seal structure of the dust cover and the sealing ring, but there are defects of poor sealing effect or low strength, especially for the harsher working environment. Under normal circumstances, the bearings often have bad seals that lead to grease overflow or low-strength bearing damage. In order to increase the effectiveness and reliability of the sealing, some composite sealed bearings increase the friction torque between the sealing ring and the inner ring of the bearing. However, it is easy to cause the phenomenon of ring rotation, that is, due to excessive friction torque, the sealing ring is fastened on the outer wall of the inner ring of the bearing and rotates with the inner ring of the bearing, resulting in failure of the bearing seal and seriously affecting the normal use of the bearing.

[0003] Moreover, most of the bearing seal processing work in the prior art is manual operation, and the efficiency is low. In particular, the assembly of the dust cover needs to be manually pressed into the outer ring of the bearing, which is not only inefficient but also has low sealing strength and is unreliable.

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