CN218377685U

CN218377685U - Labyrinth seal structure, tailstock and lathe

Info

Publication number: CN218377685U
Application number: CN202222459317.4U
Authority: CN
Inventors: 吴春霞; 肖红安; 宋晓财
Original assignee: Neway Cnc Equipment Suzhou Co ltd
Current assignee: Neway Cnc Equipment Suzhou Co ltd
Priority date: 2022-09-16
Filing date: 2022-09-16
Publication date: 2023-01-24
Anticipated expiration: 2032-09-16

Abstract

The utility model discloses a labyrinth seal structure belongs to the lathe field, including the dabber, the flange, dabber gland and flange gland, the dabber gland is fixed in the dabber front end, it rotates to drive the dabber gland when the dabber rotates, the flange gland cover is established at dabber gland outer wall and is fixed in flange one side, the flange gland cover is established at dabber gland outer wall, produce first clearance between dabber gland and the flange gland, produce the second clearance between dabber gland and the flange, first clearance is linked together with the second clearance and is formed labyrinth seal, a impurity entering bearing such as prevention cutting fluid, it still has the sealing washer as final protection to be close to bearing department. This structure has the multichannel protection, has effectively reduced the risk that impurity such as cutting fluid got into the bearing, prolongs the life of bearing.

Description

Labyrinth seal structure, tailstock and lathe

Technical Field

The utility model belongs to the technical field of the lathe technique and specifically relates to a labyrinth seal structure, tailstock and lathe is related to.

Background

In the tailstock dabber seal structure of traditional numerical control horizontal lathe, the cutting fluid can pass through the clearance entering between dabber and the preceding flange, get into the back and blockked by the sealing washer, leak from the below hole that leaks, but the hole that leaks has lasted for a long time can be blockked up, it will accumulate in inside to block up the back cutting fluid, the gap that will permeate between sealing washer and the dabber after accumulating to certain degree gets into the bearing, and the sealing washer can wear and tear, inside the cutting fluid will get into the bearing more easily after wearing and tearing, cause the damage of bearing. The risk of the bearing entering cutting fluid and other impurities can only be reduced by periodically cleaning and replacing the sealing rings.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, one of the purposes of the utility model is to provide a labyrinth seal structure for preventing impurities such as cutting fluid from entering the bearing.

In order to overcome the defects of the prior art, the second purpose of the utility model is to provide a tailstock for preventing impurities such as cutting fluid from entering the bearing.

In order to overcome the defects of the prior art, the third purpose of the utility model is to provide a machine tool for preventing impurities such as cutting fluid from entering a bearing.

The utility model discloses an one of the purpose adopts following technical scheme to realize:

the utility model provides a labyrinth seal structure, includes dabber, flange, its characterized in that: the spindle is fixed at the front end of the spindle, and the spindle drives the spindle gland to rotate when rotating; the flange gland cover is established the dabber gland outer wall is fixed in flange one side, the dabber gland with produce first clearance between the flange gland, the dabber gland orientation be equipped with first bellying on the lateral wall of flange, the flange orientation be equipped with the second bellying on the lateral wall of dabber gland, first bellying with second bellying staggered arrangement each other, first bellying with form the second clearance between the surface of second bellying, first clearance with the second clearance is linked together and forms labyrinth structure.

Further, the first boss and the second boss are arranged at an interval in the axial direction of the mandrel.

Furthermore, labyrinth seal structure still is equipped with gets rid of the basin, get rid of the basin set up in dabber gland periphery and communicate in the gap.

Furthermore, the surface of the water throwing groove is provided with a first end part and a second end part, the width of a gap between the first end part and the flange gland is smaller than the width of a gap between the second end part and the flange gland, and the first end part of each water throwing groove is closer to the outer end face of the mandrel gland than the second end part.

Furthermore, the cross section of the water throwing groove is in a sawtooth shape.

Furthermore, labyrinth seal structure still is equipped with the hole that leaks, the hole that leaks set up in on the flange gland just hole one end that leaks with first clearance intercommunication, the other end and outside intercommunication.

Furthermore, labyrinth seal structure still includes tailstock body, sleeve and bearing, the sleeve install in the tailstock body, the flange with sleeve fixed connection, the bearing install in the sleeve with between the dabber.

Further, labyrinth seal structure still includes the sealing washer, the sealing washer is located the bearing with between the flange.

The second purpose of the utility model is realized by adopting the following technical scheme:

a tailstock comprises any one labyrinth seal structure.

The third purpose of the utility model is realized by adopting the following technical scheme:

a machine tool comprises any one labyrinth seal structure.

Compared with the prior art, the labyrinth seal structure comprises a mandrel, a flange, a mandrel gland and a flange gland, wherein the mandrel gland is fixed at the front end of the mandrel, the mandrel is driven to rotate when rotating, the flange gland is sleeved on the outer wall of the mandrel gland and fixed on one side of the flange, a first gap is generated between the mandrel gland and the flange gland, a second gap is generated between the mandrel gland and the flange, and the first gap and the second gap are communicated to form labyrinth seal for preventing impurities such as cutting fluid from entering a bearing; the dabber gland periphery still is equipped with gets rid of the basin and communicate in first clearance, still be equipped with the hole that leaks on the flange gland and leak the hole and also communicate in first clearance, add man-hour, even there are a small part cutting fluid to flow in first clearance, the cutting fluid also can be thrown away by the basin because of the effect of centrifugal force during the high-speed rotation of dabber, then flow to the outside from the hole that leaks, when the hole that leaks blocks up, also can flow through first clearance (the dabber gland is the rotating member, the flange gland is the mounting, this clearance can not be blockked up), it still has the sealing washer as final protection to be close to bearing department. This structure has the multichannel protection, has effectively reduced the risk that impurity such as cutting fluid got into the bearing, prolongs the life of bearing.

Drawings

Fig. 1 is an axial sectional view of the labyrinth seal structure of the present invention;

fig. 2 is an enlarged view of the labyrinth seal structure of fig. 1 at a.

In the figure: 10. a mandrel; 20. a mandrel gland; 21. a first boss; 22. a water throwing groove; 221. a first end portion; 222. a second end portion; 30. a flange; 31. a second boss portion; 40. a flange gland; 41. a water leakage hole; 50. a locking member; 60. a sleeve; 70. a tailstock body; 80. a bearing; 90. a seal ring; 100. a first gap; 110. a second gap.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present, secured by intervening elements. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly disposed on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The technical solution provided by the present invention is explained in more detail with reference to fig. 1-2.

The labyrinth seal structure comprises a mandrel 10, a mandrel gland 20, a flange 30, a flange gland 40, a locking member 50, a sleeve 60, a tailstock body 70, a bearing 80 and a sealing ring 90.

When the mandrel 10 works, the workpiece is driven to be processed by rotation.

The mandrel gland 20 is fixed at the front end of the mandrel 10, and the mandrel 10 rotates to drive the mandrel gland 20 to rotate.

The side wall of the mandrel cover 20 facing the flange 30 is provided with a first boss 21.

The mandrel cover 20 is provided with a water throwing groove 22 on the outer periphery thereof, and the water throwing groove 22 is provided with a first end 221 and a second end 222 on the surface thereof.

The flange 30 is located at one side of the flange cover 40 and is fixedly connected with the flange cover 40.

The flange 30 is provided with a second protrusion 31 on the side wall facing the spindle cover 20.

The flange gland 40 is sleeved on the outer wall of the mandrel gland 20.

The flange cover 40 is provided with a water leakage hole 41.

The locking member 50 is used to fix the mandrel 10 and the mandrel cover 20. The locking member 50 in this embodiment is a bolt, screw, or nut.

The sleeve 60 is located on one side of the flange 30 and is fixedly connected to the flange 30.

The tailstock body 70 is installed at the outer circumference of the sleeve 60.

The bearing 80 is used to mount the mandrel 10 and the sleeve 60.

The seal ring 90 is installed between the flange 30 and the bearing 80, and prevents impurities such as cutting fluid from penetrating into the bearing 80. In this embodiment, the seal ring 90 is a rotary shaft lip seal ring.

In the application, the mandrel gland 20 is mounted at the front end of the mandrel 10 through the locking part 50, the mandrel 10 drives the mandrel gland 20 to rotate when rotating, the flange 30 is positioned on one side of the flange gland 40 and is fixedly connected with the flange gland 40, the flange gland 40 is sleeved on the outer wall of the mandrel gland 20, a first gap 100 is generated between the flange gland 40 and the mandrel gland 20, the sidewall of the mandrel gland 20 facing the flange 30 is provided with a first boss 21, the sidewall of the flange 30 facing the mandrel gland 20 is provided with a second boss 31, the first boss 21 and the second boss 31 are arranged in a mutually staggered manner, a second gap 110 is formed between the surfaces of the first boss 21 and the second boss 31, and the first gap 100 is communicated with the second gap 110 to form a labyrinth seal for preventing impurities such as cutting fluid and the like from entering the bearing 80; the periphery of the mandrel gland 20 is also provided with a water throwing groove 22, the water throwing groove 22 is communicated with the first gap 100, the flange gland 40 is also provided with a water leakage hole 41, one end of the water leakage hole 41 is communicated with the first gap 100, and the other end of the water leakage hole 41 is communicated with the outside; the sleeve 60 is positioned on one side of the flange 30 and is fixedly connected with the flange 30, the tailstock body 70 is arranged on the periphery of the sleeve 60, and the sealing ring 90 is arranged between the flange 30 and the bearing 80; even if a small amount of cutting fluid flows into the first clearance 100, the cutting fluid is thrown out by the water throwing groove 22 due to the centrifugal force during the high-speed rotation of the mandrel 10 and then flows out from the water leakage holes 41 to the outside, when the water leakage holes 41 are blocked, the cutting fluid can flow out through the first clearance 100, and the sealing ring 90 still serves as a final protection at the position close to the bearing 80. This structure has the multichannel protection, has effectively reduced the risk that impurity such as cutting fluid got into bearing 80, prolongs bearing 80's life.

The application also relates to a tailstock and a machine tool comprising the labyrinth seal structure.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, all according to the equivalent modifications and evolutions of the present invention, which are made to the above embodiments by the essential technology, and all belong to the protection scope of the present invention.

Claims

1. The utility model provides a labyrinth seal structure, includes dabber, flange, its characterized in that: the spindle is fixed at the front end of the spindle, and the spindle drives the spindle gland to rotate when rotating; the flange gland cover is established the dabber gland outer wall is fixed in flange one side, the dabber gland with produce first clearance between the flange gland, the dabber gland orientation be equipped with first bellying on the lateral wall of flange, the flange orientation be equipped with the second bellying on the lateral wall of dabber gland, first bellying with the second bellying staggered arrangement of each other, first bellying with form the second clearance between the surface of second bellying, first clearance with the second clearance is linked together and forms labyrinth seal.

2. The labyrinth seal of claim 1, wherein the first boss is spaced from the second boss along an axial direction of the mandrel.

3. The labyrinth seal according to claim 1, characterized in that: still be equipped with and get rid of the basin, get rid of the basin set up in dabber gland periphery and communicate in first clearance.

4. The labyrinth seal as defined in claim 3, said water slinger surface being provided with a first end and a second end, a gap width between said first end and said flange gland being smaller than a gap width between said second end and said flange gland, said first end of each said water slinger being closer to an outer end face of said spindle gland than said second end.

5. The labyrinth seal structure as claimed in claim 3, wherein the cross-sectional shape of the water slinger is zigzag.

6. The labyrinth seal according to claim 1, characterized in that: and the water leakage hole is arranged on the flange press cover, one end of the water leakage hole is communicated with the first gap, and the other end of the water leakage hole is communicated with the outside.

7. The labyrinth seal according to claim 1, characterized in that: still include tailstock body, sleeve and bearing, the sleeve install in the tailstock body, the flange with sleeve fixed connection, the bearing install in the sleeve with between the dabber.

8. The labyrinth seal of claim 7, wherein: still include the sealing washer, the sealing washer is located the bearing with between the flange.

9. A tailstock, its characterized in that: comprising a labyrinth seal according to any one of claims 1-8.

10. A machine tool, characterized by: comprising a labyrinth seal according to any one of claims 1-8.