CN218509941U

CN218509941U - Machine tool spindle structure with high sealing performance

Info

Publication number: CN218509941U
Application number: CN202222676479.3U
Authority: CN
Inventors: 葛建国; 罗勇刚; 魏特
Original assignee: Jiangsu Swift Machinery Technology Co ltd
Current assignee: Jiangsu Swift Machinery Technology Co ltd
Priority date: 2022-10-12
Filing date: 2022-10-12
Publication date: 2023-02-21
Anticipated expiration: 2032-10-12

Abstract

The utility model relates to a lathe main shaft structure of high leakproofness relates to main shaft technical field, changes inconvenient problem in order to solve seal structure, and it includes axle sleeve, axle core, end cover and a plurality of supporting bearing, the axle sleeve cover is established on the outer wall of axle core, and is a plurality of supporting bearing all sets up between axle sleeve and axle core, the end cover sets up in the one end of axle sleeve, the end cover is all established on the axle core, the ring channel has been seted up on the inner wall of end cover, be provided with the sealing member between the inner wall of end cover and the axle core, the sealing member inlays and puts in the ring channel, the hole of dismantling has been seted up on the inner wall of end cover, the inner wall in the hole of dismantling is linked together with the inner wall of ring channel. This application has the effect of being convenient for change.

Description

Machine tool spindle structure with high sealing performance

Technical Field

The application relates to the technical field of main shafts, in particular to a machine tool main shaft structure with high sealing performance.

Background

With the rapid development of intelligent production lines, the utilization rate of numerical control machine tools is increased from two shifts per day to 24 hours per day operation, and the numerical control machine tools operate uninterruptedly for a long time, so that the reliability requirement on the machine tools is very high.

In the prior art, when a numerical control lathe is used for turning, the numerical control lathe is usually driven by a main shaft, the main shaft is unstable in the movement process due to poor sealing property in the movement process of the main shaft, the use requirement of an intelligent production line cannot be met, the numerical control lathe runs continuously for a long time, and the phenomenon that pollutants such as cooling liquid or scraps generated by processing parts enter a bearing exists; particularly for some special material processing industries, scraps generated by processing parts easily enter the inside of the bearing through the sealing structure, so that lubricating oil pollution is caused, the rotating friction is increased, the abrasion speed of a joint surface between the rotating shaft and the bearing is accelerated, and the service life of a machine tool is influenced.

In the related art, the sealing treatment is performed by adding the sealing structure in the main shaft, and the sealing structure of the main shaft is seriously abraded due to friction for a long time and needs to be replaced periodically, so that the sealing structure is inconvenient to install and replace tightly, and needs to be improved.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that sealing structure is inconvenient to replace, the application provides a machine tool spindle structure with high sealing performance.

The application provides a lathe main shaft structure of high leakproofness adopts following technical scheme:

the utility model provides a lathe main shaft structure of high leakproofness, includes axle sleeve, axle core, end cover and a plurality of supporting bearing, the axle sleeve cover is established on the outer wall of axle core, and is a plurality of supporting bearing all sets up between axle sleeve and axle core, the end cover sets up in the one end of axle sleeve, the end cover is all established on the axle core, the ring channel has been seted up on the inner wall of end cover, be provided with the sealing member between the inner wall of end cover and the axle core, the sealing member inlays and puts in the ring channel, the dismantlement hole has been seted up on the inner wall of end cover, the inner wall in dismantlement hole is linked together with the inner wall of ring channel.

Because the sealing treatment is carried out by adding the sealing structure in the main shaft, the sealing structure of the main shaft is seriously abraded by friction for a long time and needs to be replaced at regular intervals, and the sealing structure is inconvenient to install and replace more closely; by adopting the technical scheme, the bearing comprises a shaft sleeve, a shaft core, an end cover and a plurality of supporting bearings, wherein the end cover is sleeved on the shaft core, an annular groove is formed in the inner wall of the end cover, a sealing element is embedded in the annular groove and used for eliminating a gap between the end cover and a shaft line, so that the possibility that chips generated by processing parts enter the inside to influence the supporting bearings is reduced; when the device is used for a long time and the sealing element is seriously worn and needs to be replaced, the end cover is taken down and extends into the dismounting hole through the tool, the tool is contacted with the surface of the sealing element due to the fact that the inner wall of the dismounting hole is communicated with the inner wall of the annular groove, the tool is pried upwards, the sealing element can be separated from the annular groove, after the sealing element is completely dismounted, a new sealing element is embedded in the annular groove, and then the end cover is sleeved on the shaft core for installation; through the setting of sealing member, ring channel and dismantlement hole, the sealing member has improved the leakproofness between end cover and the axle core, reduces the piece that the processing part produced and enters into inside possibility, reduces the influence that produces bearing and axle core after inside lubricating oil is contaminated, and the setting in ring channel and dismantlement hole helps having improved the dismantlement efficiency of sealing member simultaneously, and it is convenient to dismantle, and easily operating personnel operates.

Optionally, a set screw is arranged on the end wall of the sealing element, and the set screw penetrates through the sealing element and is in threaded connection with the annular groove.

By adopting the technical scheme, the end wall of the sealing element is provided with the set screw; through the setting of holding screw, improved the stability of being connected between sealing member and the ring channel inner wall, reduced the possibility that the sealing member deviates from in the ring channel, it is fixed reliable and dismantle the convenience simultaneously.

Optionally, the sealing member includes grafting ring portion and straight ring portion, grafting ring portion inserts and establishes in the ring channel, the thickness of grafting ring portion is greater than the groove depth of ring channel, straight ring portion connects on the lateral wall of grafting ring portion, straight ring portion keeps away from the one end butt of grafting ring portion on support bearing.

By adopting the technical scheme, the sealing element consists of the inserting ring part and the straight ring part, the inserting ring part and the straight ring part are integrally formed, the inserting ring part is inserted in the annular groove, and the thickness of the inserting ring part is greater than the groove depth of the annular groove; through the setting of grafting ring portion and straight ring portion, increased the area of contact between sealing member and the axle core, the piece that further reduces the processing part and produce enters into inside possibility from the clearance department of axle sleeve and axle core, has improved sealing performance.

Optionally, one side of the straight ring part far away from the shaft core is provided with a plurality of anti-falling strips, the anti-falling strips are arranged along the circumferential direction of the straight ring part, and a plurality of anti-falling grooves for inserting the anti-falling strips are formed in the inner wall of the end cover.

By adopting the technical scheme, the plurality of anti-falling strips are integrally formed on one side of the straight ring part and are inserted into the anti-falling grooves; through anticreep strip and anticreep groove setting, increased the area of contact between straight ring portion and the end cover, improved the stability of straight ring portion installation.

Optionally, deformation cavities are formed in the inserting ring part and the straight ring part.

Through adopting above-mentioned technical scheme, all set up the deformation cavity in grafting ring portion and the straight ring portion, through the setting that warp the cavity, improved grafting ring portion and straight ring portion elastic deformation's ability, the installation of the ring portion of being convenient for of pegging graft and straight ring portion.

Optionally, the one end that straight ring portion was kept away from to grafting ring portion is provided with the adsorbed layer, the adsorbed layer sets up in the ring channel.

By adopting the technical scheme, one end of the insertion ring part is glued and fixed with the adsorption layer; through the setting of adsorbed layer, further improved the leakproofness between axle core and the axle sleeve, help realizing blockking to the piece that processing part produced.

Optionally, the adsorption layer is made of sponge material.

Through adopting above-mentioned technical scheme, the adsorbed layer adopts the sponge material to make, utilizes the setting of sponge material, effectively adsorbs some greasy dirt etc. reduces the possibility that greasy dirt etc. got into inside and produced the influence to support bearing, has improved the cleanliness factor of inside lubricating oil.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the arrangement of the sealing element, the annular groove and the dismounting hole, the sealing element improves the sealing property between the end cover and the shaft core, reduces the possibility that scraps generated by processing parts enter the inside, reduces the influence on the supporting bearing and the shaft core after the internal lubricating oil is polluted, and meanwhile, the arrangement of the annular groove and the dismounting hole is beneficial to improving the dismounting efficiency of the sealing element, is convenient to dismount and is easy for operators to operate;

2. by the arrangement of the set screw, the stability of connection between the sealing element and the inner wall of the annular groove is improved, the possibility that the sealing element is separated from the annular groove is reduced, and the sealing element is reliable in fixation and convenient to detach;

3. utilize sponge material's setting, effectively adsorb some greasy dirt etc. reduce the possibility that greasy dirt etc. got into inside and produced the influence to the support bearing, improved the cleanliness factor of inside lubricating oil.

Drawings

Fig. 1 is a schematic structural diagram of a machine tool spindle structure with high sealing performance in an embodiment of the application.

Fig. 2 is an enlarged view of a portion a of fig. 1.

Description of reference numerals: 1. a shaft sleeve; 2. a shaft core; 3. an end cap; 31. an annular groove; 32. disassembling the hole; 33. a drop-proof groove; 4. a support bearing; 5. a seal member; 51. an insertion ring portion; 511. deforming the cavity; 52. a straight ring portion; 6. tightening the screw; 7. anti-drop strips; 8. and an adsorption layer.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses a machine tool spindle structure with high sealing performance. Referring to fig. 1, the high-sealing machine tool spindle structure includes a shaft sleeve 1, a shaft core 2, an end cover 3 and a plurality of supporting bearings 4, the shaft sleeve 1 is sleeved on the outer wall of the shaft core 2, the supporting bearings 4 are all installed between the shaft sleeve 1 and the shaft core 2, the end cover 3 is installed at the opening end of the shaft sleeve 1 in the length direction, and the end cover 3 is sleeved on the outer wall of the shaft core 2.

Referring to fig. 2, the annular groove 31 has been all seted up on the inner wall of end cover 3, the circumferential direction setting of end cover 3 inner wall is followed to the annular groove 31, still install sealing member 5 between the inner wall of end cover 3 and the axle core 2 outer wall, sealing member 5 inlays and sets up in annular groove 31, sealing member 5 is the annular structure in this embodiment, sealing member 5 cover is established on the outer wall of axle core 2, disassembly hole 32 has still been seted up on the inner wall of end cover 3, the inner wall of disassembly hole 32 is linked together with the inner wall of annular groove 31, when sealing member 5 need be changed, take off end cover 3, stretch into disassembly hole 32 through the instrument, instrument and 5 surface contact of sealing member, pry the instrument upwards, can deviate from sealing member 5 from in the annular groove 31, it is convenient to dismantle.

Referring to fig. 2, the sealing member 5 includes a plugging ring portion 51 and a straight ring portion 52, the plugging ring portion 51 is inserted into the annular groove 31, the thickness of the plugging ring portion 51 is greater than the groove depth of the annular groove 31 in the present embodiment, one end of the plugging ring portion 51 away from the bottom wall of the annular groove 31 abuts on the outer wall of the shaft core 2, the straight ring portion 52 is integrally formed on the plugging ring portion 51, and one end of the straight ring portion 52 away from the plugging ring portion 51 abuts on the support bearing 4.

Referring to fig. 2, the one end adhesive fixation that straight ring portion 52 was kept away from to grafting ring portion 51 has adsorbed layer 8, and adsorbed layer 8 can be made for the sponge material in this embodiment, and adsorbed layer 8 is located ring channel 31, and the thickness of adsorbed layer 8 is unanimous with grafting ring portion 51's thickness for effectively adsorbing some greasy dirt etc. reduce the possibility that greasy dirt etc. got into inside and produced the influence to supporting bearing 4, improved the cleanliness factor of inside lubricating oil.

Referring to fig. 2, a set screw 6 is installed at one side of the plugging ring portion 51, the set screw 6 penetrates through the plugging ring portion 51, the set screw 6 is screwed in the annular groove 31 to improve the connection stability between the plugging ring portion 51 and the inner wall of the annular groove 31 and reduce the possibility that the plugging ring portion 51 is separated from the annular groove 31, and the set screw 6 may be single or multiple in this embodiment.

Referring to fig. 2, one side integrated into one piece that straight ring portion 52 kept away from axle core 2 has a plurality of anticreep strips 7, a plurality of anticreep strips 7 set up along straight ring portion 52's circumferential direction, a plurality of anticreep grooves 33 have been seted up on the inner wall of end cover 3, the quantity of anticreep groove 33 is unanimous with the quantity of anticreep strip 7 in this embodiment, anticreep strip 7 is inserted and is established in corresponding anticreep groove 33, be used for increasing the area of contact between straight ring portion 52 and the end cover 3, the stability of straight ring portion 52 installation has been improved.

Referring to fig. 2, deformation cavities 511 are formed in the inner walls of the plugging ring portion 51 and the straight ring portion 52, so as to improve the elastic deformation capability of the plugging ring portion 51 and the straight ring portion 52, and facilitate the installation of the plugging ring portion 51 and the straight ring portion 52.

The implementation principle of the high-tightness machine tool spindle structure in the embodiment of the application is as follows: when the sealing element 5 needs to be replaced after being worn, the end cover 3 is taken down, the set screw 6 is rotated through a hardware tool, the set screw 6 is taken out from the annular groove 31, the tool extends into the dismounting hole 32 at the moment, the tool is pried upwards until the tool abuts against the inserting ring part 51 of the sealing element 5, the inserting ring part 51 of the sealing element 5 is separated from the annular groove 31, the anti-separation strips 7 of the straight ring part 52 of the sealing element 5 are separated from the anti-separation grooves 33 in sequence, at the moment, after the sealing element 5 is taken down, a new sealing element 5 is installed on the inner wall of the end cover 3, the set screw 6 is screwed through the tool, and after the installation of the sealing element 5 is finished, the end cover 3 is sleeved on the shaft core 2 for installation; through the setting of sealing member 5, ring channel 31 and disassembly hole 32, sealing member 5 has improved the leakproofness between end cover 3 and the axle core 2, reduce the piece that the processing part produced and enter into inside probably, reduce the influence that inside lubricating oil is contaminated back to bearing 4 and axle core 2 production, ring channel 31 and disassembly hole 32's setting simultaneously helps having improved the dismantlement efficiency of sealing member 5, it is convenient to dismantle, easily operating personnel operates.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a lathe main shaft structure of high leakproofness which characterized in that: including axle sleeve (1), axle core (2), end cover (3) and a plurality of supporting bearing (4), axle sleeve (1) cover is established on the outer wall of axle core (2), and is a plurality of supporting bearing (4) all set up between axle sleeve (1) and axle core (2), end cover (3) set up in the one end of axle sleeve (1), end cover (3) cover is established on axle core (2), ring channel (31) have all been seted up on the inner wall of end cover (3), be provided with sealing member (5) between the inner wall of end cover (3) and axle core (2), sealing member (5) are inlayed and are put in ring channel (31), dismantle hole (32) have been seted up on the inner wall of end cover (3), the inner wall of dismantle hole (32) is linked together with the inner wall of ring channel (31).

2. The high-tightness machine tool spindle structure according to claim 1, wherein: and a set screw (6) is arranged on the end wall of the sealing element (5), and the set screw (6) penetrates through the sealing element (5) and is in threaded connection with the annular groove (31).

3. The spindle structure of a high-sealability machine tool of claim 1 wherein: the sealing element (5) comprises an inserting connection ring portion (51) and a flat ring portion (52), the inserting connection ring portion (51) is inserted into the annular groove (31), the thickness of the inserting connection ring portion (51) is larger than the groove depth of the annular groove (31), the flat ring portion (52) is connected to the side wall of the inserting connection ring portion (51), and one end, far away from the inserting connection ring portion (51), of the flat ring portion (52) abuts against the supporting bearing (4).

4. A high-sealability machine tool spindle structure according to claim 3, wherein: one side that axle core (2) were kept away from in straight ring portion (52) is provided with a plurality of anticreep strips (7), and is a plurality of anticreep strip (7) set up along the circumferential direction of straight ring portion (52), set up on the inner wall of end cover (3) a plurality of confession anticreep strips (7) and insert anticreep groove (33) of establishing.

5. A high-tightness machine tool spindle structure according to claim 3, characterized in that: deformation cavities (511) are formed in the inserting ring part (51) and the straight ring part (52).

6. A high-tightness machine tool spindle structure according to claim 3, characterized in that: one end of the plug-in ring portion (51) far away from the straight ring portion (52) is provided with an adsorption layer (8), and the adsorption layer (8) is arranged in the annular groove (31).

7. The spindle structure of a high-sealability machine tool of claim 6 wherein: the adsorption layer (8) is made of sponge materials.