Sealing structure of deep hole internal grinding tool
A sealing structure and grinding tool technology, which is applied to the sealing of engines, machine tools and grinders designed for grinding the rotating surface of workpieces, etc. The effect of ensuring the sealing effect and improving the rotation accuracy
Active Publication Date: 2020-02-21
SHANGHAI MACHINE TOOL WORK
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- Abstract
- Description
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- Application Information
AI Technical Summary
Problems solved by technology
The sealing structure of the front end bearing of the traditional internal grinding tool has the disadvantage of unreliable sealing, which leads to the short service life of the internal grinding tool
Method used
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Embodiment Construction
[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0015] Such as figure 1 , as shown in 2, a sealing structure of a deep-hole internal grinding tool, including a main shaft 1, a sleeve 2, a front bearing 3, a high-precision nut 4, a set screw 6, a lock nut 7, an end cover 8, and a grinding wheel method Blue plate 10, O-ring seal 101, etc. The front end of the sleeve 2 is equipped with an end cover 8, the front of the sleeve 2 is connected to the main shaft 1 through the front bearing 3, the front end of the front bearing 3 is provided with a lock nut 7, and the lock nut 7 is connected to the inner ring of the front bearing 3 through the high-precision nut 4 Axial positioning connection, an adjustment spacer 5 is provided between the end cover 8 and the outer ring of the bearing 3, and a grinding wheel flange 10 is installed at the front end of the main shaft 1.
[0016] Due to the tight position of t...
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Abstract
The invention relates to a sealing structure of a deep hole internal grinding tool. The sealing structure of the deep hole internal grinding tool comprises a main shaft, a sleeve, a front bearing, a high-precision nut, an adjusting spacer ring, a locking nut, an end cover and a grinding wheel flange; an angled staggered type radial labyrinth sealing structure is arranged in a matched space betweenthe grinding wheel flange and the end cover; a gas sealing structure is arranged in the middle of the labyrinth sealing structure of the grinding wheel flange and the end cover; gas passes through agas channel formed by a radial gas sealing joint pipe thread arranged on the sleeve and a through hole in the end cover; the gas is supplied to an annular cavity arranged on the inner surface of the grinding wheel flange to form a double sealing structure of labyrinth sealing and gas sealing; and cooling liquid and impurities are effectively prevented from entering a shaft system. According to thesealing structure of the deep hole internal grinding tool, various sealing modes of a radial and axial labyrinth sealing combination structure and a labyrinth and gas sealing combination structure are adopted, the sealing effect of the internal grinding tool is effectively guaranteed, the rotating precision of the internal grinding tool is improved, the service life of the bearing of the internalgrinding tool is prolonged, meanwhile, the sealing structure is a non-contact structure, the maintaining is facilitated, energy is saved, and environmental friendliness is achieved.
Description
technical field [0001] The invention relates to a sealing structure of an internal grinding tool, in particular to a sealing structure of an internal grinding tool for deep holes. Background technique [0002] Deep hole internal grinding is a difficult point in the field of grinding processing, and the sealing of the bearing of the internal grinding tool, the main key component, is the key to the service life of the grinding tool. Due to the particularity of processing, the internal grinding tool needs to go deep into the workpiece hole, the deepest is 2 meters, and the length-to-diameter ratio is more than 1:10. The working environment is harsh, especially when processing blind holes. The shedding abrasive particles, metal powder and high-pressure grinding fluid are easy to enter the spindle shaft of the internal grinding tool, thereby affecting the service life of the internal grinding tool and reducing the grinding accuracy. On the other hand, due to the space limitation...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B24B5/35B24B5/48B24B55/00F16J15/40F16J15/447
CPCB24B5/35B24B5/48B24B55/00F16J15/40F16J15/447
Inventor 钱梅周明惠汪学栋罗妍妮
Owner SHANGHAI MACHINE TOOL WORK