Sealing structure for preventing lubricant in bearing box of numerical control machine tool from leaking

Abstract

The invention discloses a sealing structure for preventing a lubricant in a bearing box of a numerical control machine tool from leaking. A bearing of a supporting component is arranged in a first through hole of a box body; a rotating shaft is connected to the bearing; a positioning disc is arranged at one side of the bearing; a movable ring of a leakage-proof component is fixedly connected to the rotating shaft; a static ring and the positioning disc are fixed; the static ring is attached to the movable ring; a sealing ring, a pressing ring, a hold-down spring and a pressing disc are sequentially arranged at one side of the static ring and one side of the movable ring; a heat dissipation box of a heat dissipation component is arranged at one side of a box body and communicated with a first through hole; and a hydraulic pump is connected to the heat dissipation box through a connecting pipe. According to the sealing structure, the position of the pressing disc is adjusted to push the hold-down spring to apply pressing force to the pressing disc, so that all parts are kept in close contact to improve the sealing performance; a lubricant at the bearing can be pumped out into the heat dissipation box through the hydraulic pump for heat dissipation, so that the temperature of the bearing can be kept stable, and the lubricant is prevented from aging; and the sealing performance is influenced by thermal expansion of parts, so that the sealing performance can be greatly improved.

Description

technical field [0001] The invention relates to the technical field of machine tools, in particular to a sealing structure for preventing lubricant leakage in a bearing box of a numerically controlled machine tool. Background technique [0002] With the rapid development of intelligent production lines, the utilization rate of CNC machine tools has grown from the original two shifts per day to 24-hour operation. Long-term uninterrupted operation has high requirements for the reliability of machine tools. The CNC lathes in the prior art , when turning, it usually needs to rely on the main shaft to drive. The current main shaft is in the process of movement. Due to its poor sealing performance, the main shaft is unstable during the movement, which can no longer meet the needs of intelligent production lines. Long-term continuous During operation, there is a phenomenon that pollutants such as coolant or debris generated by processed parts enter the bearing. Especially for some ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a sealing structure that prevents lubricant leakage in the bearing box of a CNC machine tool, aiming to solve the problem that the existing bearing box has poor sealing effect and easy leakage of lubricant

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