CN213017691U

CN213017691U - Sealing structure and spindle box thereof

Info

Publication number: CN213017691U
Application number: CN202021496730.2U
Authority: CN
Inventors: 王有富
Original assignee: Ningbo Jiangbei Ningke Jinchuang Machinery Manufacturing Co ltd
Current assignee: Ningbo Jiangbei Ningke Jinchuang Machinery Manufacturing Co ltd
Priority date: 2020-07-25
Filing date: 2020-07-25
Publication date: 2021-04-20
Anticipated expiration: 2030-07-25

Abstract

The utility model relates to a seal structure and headstock thereof, wherein, seal structure includes sealed cowling and rotation circle, first opening has been seted up to the sealed cowling axial, the rotation circle rotate connect in the sealed cowling, be equipped with on the rotation circle with the second opening that first opening aligns, rotation circle circumference lateral wall with be equipped with the toroidal cavity between the sealed cowling circumference side inner wall, the sealed cowling lateral wall be equipped with the communicating apopore of toroidal cavity. This application has the effect that improves the sealing performance between main shaft and the box.

Description

Sealing structure and spindle box thereof

Technical Field

The application relates to the technical field of part machining, in particular to a sealing structure and a spindle box thereof.

Background

The headstock is an important part of the machine tool and is used for arranging the machine tool working spindle and its drive parts and corresponding additional mechanisms. The main spindle box is a complex transmission component and comprises a main spindle assembly, a reversing mechanism, a transmission mechanism, a braking device, an operating mechanism, a lubricating device and the like. The main function of the device is to support the main shaft and make the main shaft rotate, thus realizing the functions of starting, braking, speed changing, reversing and the like of the main shaft.

In the related art, a machining mode of a spindle box for parts is as follows: the main shaft drives the part to rotate and simultaneously flushes water towards the part processing position. Because the main shaft extends out of the main shaft box, the sealing between the main shaft and the box body needs to be ensured, and water is prevented from entering the main shaft box from a gap between the main shaft and the box body.

SUMMERY OF THE UTILITY MODEL

In order to improve the sealing performance between main shaft and the box, this application provides a seal structure and headstock thereof.

The application provides a seal structure adopts following technical scheme:

in a first aspect, the present application provides a sealing structure, which adopts the following technical scheme:

the utility model provides a sealing structure, includes sealed cowling and rotation circle, first opening has been seted up to the sealed cowling axial, the rotation circle rotate connect in the sealed cowling, be equipped with on the rotation circle with the second opening that first opening aligns, rotation circle circumference lateral wall with be equipped with the toroidal cavity between the sealed cowling circumference side inner wall, the sealed cowling lateral wall be equipped with the communicating apopore of toroidal cavity.

Through adopting above-mentioned technical scheme, the rotation circle is used for being connected with the circumference lateral wall of main shaft, sets up the apopore at sealed cowling lateral wall least significant end, and the main shaft drives the rotation circle and rotates, and when water got into annular cavity, the rotation of rotation circle is got rid of water to annular cavity lateral wall, and water flows to the apopore along annular cavity lateral wall, and water flows from the apopore to prevent water through rotating the gap between circle and the sealed cowling.

Preferably, the annular cavity comprises a first annular cavity, a first outer groove is formed in the circumferential outer side wall of the rotating ring, a first inner groove is formed in the circumferential inner side wall of the sealing cover, and the first outer groove and the first inner groove form the first annular cavity.

By adopting the technical scheme, the first outer groove and the first inner groove form the first annular cavity.

Preferably, the toroidal cavity further includes a second toroidal cavity, a second outer groove is formed on the circumferential outer side wall of the rotating ring, a second inner groove is formed on the circumferential inner side wall of the sealing cover, the second outer groove and the second inner groove form the second toroidal cavity, and the first toroidal cavity and the second toroidal cavity are arranged at intervals.

Through adopting above-mentioned technical scheme, increase the second toroidal cavity, even make water pass through the first annular chamber still need pass through the hindrance of second toroidal cavity, further improve the performance of blocking water between circle and the sealed cowling of rotating.

Preferably, the circumferential outer side wall of the rotating ring is stepped, the bottom wall of the first outer groove is closer to the axis of the rotating ring relative to the bottom wall of the second outer groove, the circumferential inner side wall of the sealing cover is stepped to match with the circumferential outer side wall of the rotating ring, and the bottom wall of the first inner groove is farther from the axis of the sealing cover relative to the bottom wall of the second inner groove.

Through adopting above-mentioned technical scheme, the step shape cooperation of rotating circle and sealed cowling makes hydroenergy difficult to pass through the gap between rotating circle and the sealed cowling.

Preferably, through holes are circumferentially arranged on the axial side face of the sealing cover in an array mode.

Through adopting above-mentioned technical scheme, the bolt passes behind the through-hole and fixes the sealed cowling on other parts.

In a first aspect, the present application provides a spindle box, which adopts the following technical scheme:

a spindle box comprises a box body and the sealing structure, wherein a third opening is formed in the box body, the sealing structure is installed on the box body, a sealing cover is connected with the box body, the first opening is aligned with the third opening, and a rotating ring is located between the box body and the sealing cover.

By adopting the technical scheme, the spindle box is connected with the inner wall of the second opening of the rotating ring through the outer side wall of the spindle penetrating through the third opening, and a gap between the third opening and the spindle is sealed by the sealing structure, so that water can be prevented from entering the box body from the third opening.

Preferably, the side wall of the box body is provided with an annular groove surrounding the third opening, and the axial side surface of the sealing cover is provided with an annular convex block matched with the annular groove.

By adopting the technical scheme, the horizontal shaking of the rotating ring on the box body can be reduced.

Preferably, the side wall of the box body is provided with threaded holes, and the threaded holes are axially arrayed outside the annular groove.

Through adopting above-mentioned technical scheme, the screw hole is used for installing sealed cover.

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

(1) the rotating ring is used for being connected with the circumferential side wall of the main shaft, the water outlet hole is formed in the lowest end of the side wall of the sealing cover, the main shaft drives the rotating ring to rotate, when water enters the annular cavity, the rotating ring rotates to throw the water to the side wall of the annular cavity, the water flows to the water outlet hole along the side wall of the annular cavity, and the water flows out of the water outlet hole, so that the water is prevented from passing through a gap between the rotating ring and the sealing cover;

(2) the spindle box is connected with the inner wall of the second opening of the rotating ring through the outer side wall of the spindle penetrating through the third opening, and a gap between the third opening and the spindle is sealed by a sealing structure, so that water can be prevented from entering the box body from the third opening.

Drawings

Fig. 1 is an overall structural schematic view of a seal structure;

FIG. 2 is a cross-sectional view of the seal structure;

FIG. 3 is an exploded view of the seal structure;

FIG. 4 is a schematic view of the overall structure of the spindle head;

FIG. 5 is an exploded view of the headstock;

fig. 6 is a schematic view of the structure of the rotating ring.

Description of reference numerals: 1. a sealing cover; 2. rotating the ring; 3. a first opening; 4. a second opening; 5. a water outlet hole; 6. a first annular cavity; 7. a first outer tank; 8. a first inner tank; 9. a second annular cavity; 10. a second outer tank; 11. a second inner tank; 12. a through hole; 13. a box body; 14. a third opening; 15. an annular groove; 16. an annular projection; 17. a threaded bore.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses a sealing structure. Referring to fig. 1, the sealing structure comprises a sealing cover 1 and a rotating ring 2, wherein a first opening 3 is axially formed in the rotating ring 2, the first opening 3 is circular, and the rotating ring 2 is rotatably connected in the sealing cover 1. Through holes 12 for mounting are penetrated through the axial side of the seal housing 1 close to the edge in a circumferential array.

Referring to fig. 2, the rotating ring 2 is axially provided with a second opening 4 aligned with the first opening 3, and the second opening 4 is coaxial with the first opening 3 and has the same diameter. The circumferential outer side wall of the rotating ring 2 is attached to the circumferential inner wall of the sealing cover 1, the circumferential outer side wall of the rotating ring 2 and the circumferential inner wall of the sealing cover 1 are both arc-shaped, so that relative rotation can be achieved between the outer side wall and the inner wall, and an annular cavity is formed between the outer side wall and the inner wall. The annular cavities include a first annular cavity 6 and a second annular cavity 9. A first outer groove 7 is formed in the circumferential outer side wall of the rotating ring 2, a first inner groove 8 is formed in the circumferential inner side wall of the sealing cover 1, and the first outer groove 7 and the first inner groove 8 form a first annular cavity 6. The second outer groove 10 is formed in the circumferential outer side wall of the rotating ring 2, the second inner groove 11 is formed in the circumferential inner side wall of the sealing cover 1, the second outer groove 10 and the second inner groove 11 form a second annular cavity 9, and the first annular cavity 6 and the second annular cavity 9 are arranged at intervals. Wherein the first inner groove 8, the second inner groove 11, the first outer groove 7 and the second outer groove 10 are all circular rings, and in some embodiments, they may be in other shapes as long as their shapes do not affect the rotation between the rotating ring 2 and the sealing cover 1. The apopore 5 with first toroidal cavity 6 and second toroidal cavity 9 is seted up to the circumference side of sealed cowling 1, and when the installation of sealed cowling 1, apopore 5 is located the lower extreme of sealed cowling 1 to in first toroidal cavity 6 and the interior water outflow of second toroidal cavity 9.

Referring to fig. 2 and 3, the circumferential outer side wall of the rotating ring 2 is stepped, the bottom wall of the first outer groove 7 is closer to the axis of the rotating ring 2 than the bottom wall of the second outer groove 10, the circumferential inner side wall of the seal cover 1 is stepped to match with the circumferential outer side wall of the rotating ring 2, and the bottom wall of the first inner groove 8 is farther from the axis of the seal cover 1 than the bottom wall of the second inner groove 11. The rotating ring 2 is matched with the sealing cover 1 in a step shape, so that water can hardly pass through a gap between the rotating ring 2 and the sealing cover 1.

The implementation principle of a sealing structure in the embodiment of the application is as follows: the circle of rotating 2 is used for being connected with the circumference lateral wall of main shaft, set up apopore 5 at 1 lateral wall least significant end of sealed cowling, the main shaft drives and rotates circle 2 rotations, when getting into first annular cavity 6 and second annular cavity 9 through sealed cowling 1 and the gap between the circle of rotating 2 in, the rotation of circle 2 gets rid of the water in first annular cavity 6 and the second annular cavity 9 respectively to first outer trough 7 diapire and 10 diapires in second outer trough, water flows to apopore 5 along 7 diapires in first outer trough and 10 diapires in second outer trough, water flows out from apopore 5, thereby prevent that water from passing through the gap between circle of rotating 2 and the sealed cowling 1.

The embodiment of the application also discloses a spindle box, which refers to fig. 4 and comprises a box body 13 and the sealing structure. The sealing structure is mounted on the box body 13.

Referring to fig. 5, the case 13 is formed with a third opening 14, and the third opening 14 is circular. The first opening 3 of the sealing cap 1 and the second opening 4 of the rotating ring 2 are coaxially aligned with the third opening 14. The side wall of the box body 13 is provided with an annular groove 15 surrounding the third opening 14, the annular groove 15 and the side wall of the third opening 14 of the box body 13 are provided with an annular groove 15 surrounding the third opening 14, and the side wall of the box body 13 is arrayed outside the annular groove 15 and provided with threaded holes 17. The threaded holes 17 are aligned with the through holes 12 in the sealing cap 1. The bolts are inserted through the through holes 12 and then connected to the screw holes 17, thereby fixing the seal cover 1 to the case 13.

Referring to fig. 6, one axial surface of the rotating ring 2, which is far away from the sealing cover 1, is provided with an annular projection 16 which is matched with the annular groove 15, and the annular projection 16 is coaxial with the rotating ring 2 so as to reduce horizontal shaking of the rotating ring 2 on the box body 13.

The implementation principle of a sealing structure in the embodiment of the application is as follows: the outer side wall of the main shaft penetrating through the third opening 14 on the spindle box is connected with the inner wall of the second opening 4 of the rotating ring 2, and a gap between the third opening 14 and the main shaft is sealed by a sealing structure, so that water can be prevented from entering the box body 13 from the third opening 14.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, 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. A sealing structure, characterized in that: including sealed cowling (1) and rotation circle (2), first opening (3) have been seted up to sealed cowling (1) axial, rotate circle (2) rotate connect in sealed cowling (1), rotate be equipped with on circle (2) with second opening (4) that first opening (3) were aligned, rotate circle (2) circumference lateral wall with be equipped with the toroidal cavity between sealed cowling (1) circumference side inner wall, sealed cowling (1) lateral wall be equipped with communicating apopore (5) of toroidal cavity.

2. The seal structure of claim 1, wherein: the annular cavity comprises a first annular cavity (6), a first outer groove (7) is formed in the circumferential outer side wall of the rotating ring (2), a first inner groove (8) is formed in the circumferential inner side wall of the sealing cover (1), and the first outer groove (7) and the first inner groove (8) form the first annular cavity (6).

3. The seal structure of claim 2, wherein: the annular cavity further comprises a second annular cavity (9), a second outer groove (10) is formed in the circumferential outer side wall of the rotating ring (2), a second inner groove (11) is formed in the circumferential inner side wall of the sealing cover (1), the second outer groove (10) and the second inner groove (11) form the second annular cavity (9), and the first annular cavity (6) and the second annular cavity (9) are arranged at intervals.

4. The seal structure of claim 3, wherein: the circumference outer side wall of the rotating ring (2) is step-shaped, the bottom wall of the first outer groove (7) is closer to the axis of the rotating ring (2) relative to the bottom wall of the second outer groove (10), the circumference inner side wall of the sealing cover (1) is step-shaped matched with the circumference outer side wall of the rotating ring (2), and the bottom wall of the first inner groove (8) is farther away from the axis of the sealing cover (1) relative to the bottom wall of the second inner groove (11).

5. The seal structure of claim 1, wherein: through holes (12) are circumferentially arranged on the axial side surface of the sealing cover (1).

6. A spindle head comprising a housing (13) and a seal structure according to any one of claims 1 to 5, characterized in that: the box (13) is provided with a third opening (14), the sealing structure is installed on the box (13), the sealing cover (1) is connected with the box (13), the first opening (3) is aligned with the third opening (14), and the rotating ring (2) is located between the box (13) and the sealing cover (1).

7. The headstock of claim 6, wherein: an annular groove (15) surrounding the third opening (14) is formed in the side wall of the box body (13), and an annular convex block (16) matched with the annular groove (15) is arranged on the axial side face of the sealing cover (1).

8. The headstock of claim 7, wherein: threaded holes (17) are formed in the side wall of the box body (13), and the threaded holes (17) are axially arrayed outside the annular groove (15).