An oil-proof device for the bottom end bearing of a screw rod

Abstract

The invention discloses an oil repellency device for a bearing on the bottom end of a screw. The oil repellency device comprises the screw, a bearing block and the bearing, wherein the bearing block and the bearing are installed on the bottom end of the screw; a step is integrally arranged above the bearing block on the bottom end of the screw; an annular oil receiving groove is arranged on the lower end of the step; the external diameter of the annular oil receiving groove is greater than the external diameter of the step. Compared with the prior art, the oil repellency device has the beneficial effects that as the step on the screw blocks connection clearance between the annular oil receiving groove and the screw, dirty oil is effectively prevented from permeating downward; meanwhile, a rubber gasket enables the tightness between the annular oil receiving groove and the screw to be further improved; the external diameter of the annular oil receiving groove is greater than the external diameter of the step, so that the dirty oil flowing downward from the screw can be received, and be prevented from entering the bearing; therefore the damage to the bearing due to the dirty oil is effectively prevented.

Description

technical field [0001] The invention relates to an oil prevention device for a bearing at the bottom end of a screw rod. Background technique [0002] In the existing vertical machining, the bottom end of the Z-axis screw rod has the following defects. After a period of production and processing, the dirty oil on the screw rod will flow down the screw rod, although the inner frame has been installed on the bearing seat at the lower end of the screw rod The sealing ring, but there is still a gap, and dirty oil will still enter the bearing from the gap, causing the bearing to be damaged. Contents of the invention [0003] The above problem to be solved by the present invention is to provide an oil prevention device for the bottom end bearing of the screw rod in view of the above-mentioned deficiencies in the prior art. [0004] In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: [0005] An oil pre...

AI Technical Summary

Problems solved by technology

[0002] In the existing vertical machining, the bottom end of the Z-axis screw rod has the following defects. After a period of production and processing, the dirty oil on the screw rod will flow down the screw rod, although the inner frame has been installed on the bearing seat at the lower end of the screw rod The seal ring, but there is still a gap, and dirty oil will still enter the bearing from the gap, causing bearing damage

Images