CN212122539U

CN212122539U - Machine tool bearing protection structure

Info

Publication number: CN212122539U
Application number: CN201922381647.4U
Authority: CN
Inventors: 赵祖喜; 张剑沉; 谢振涛
Original assignee: Anhui Sino Seiko Co ltd
Current assignee: Anhui Sino Seiko Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-12-11
Anticipated expiration: 2029-12-26

Abstract

The utility model provides a machine tool bearing protective structure applied to the technical field of machine tool parts, a ball screw (1) of the machine tool bearing protective structure is positioned above a bearing sleeve (3) and fixedly sleeved with an oil slinger (4), the oil slinger (4) comprises an oil slinger body (5) and an oil slinger flange part (6), an oil slinger (8) is installed on a boss part (7) on the upper part of the inner wall of the bearing sleeve (3), the oil slinger (8) is sleeved on the outer ring of the oil slinger body (5), the oil slinger (8) is positioned below the oil slinger flange part (7), a gap part is arranged between the oil slinger body (5) and the oil slinger (8), the machine tool bearing protective structure can effectively prevent oil stains on the ball screw from entering a support bearing in a bearing seat to cause bearing damage and does not need to be frequently maintained when the ball screw of a machine tool rotates, the machine tool shutdown frequency is reduced, and the application is wide.

Description

Machine tool bearing protection structure

Technical Field

The utility model belongs to the technical field of the machine tool spare part, more specifically say, relate to a machine tool bearing protective structure.

Background

In the prior art, in order to prevent oil stains from entering the inside of a ball screw shaft bearing to cause abnormal damage of the bearing, an oil-proof sealing ring is mostly installed at an inlet of a bearing seat, and oil resistance is realized by a method of making an inner lip friction seal by using a rubber material. However, when the machine tool works, the ball screw rotating at a high speed can rub the oil-proof sealing ring to generate heat, so that the temperature rise is serious, and the transmission precision of the screw is seriously influenced. Meanwhile, after the oil-proof sealing ring runs for a period of time, a motion gap is easily generated on the friction surface of the oil-proof sealing ring, and oil dirt can permeate into the bearing through the gap under the action of gravity. In addition, maintenance and replacement of the oil seal ring is also troublesome. Fig. 4 is a schematic cross-sectional view of a prior art machine tool bearing protection structure. This scheme has installed an grease proofing sealing washer at the bearing frame entrance, and this grease proofing sealing washer is for the bearing frame is fixed motionless. When the lathe during operation takes place the friction between high-speed rotatory ball screw and the grease proofing sealing washer, not only heat seriously, the grease proofing sealing washer also became invalid easily moreover to lead to frequently changing grease proofing sealing washer. And the oil-proof sealing ring is replaced inconveniently, and the machine tool is stopped, so that the normal production is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the bearing protection structure is simple in structure, can effectively prevent oil stains on the ball screw from entering a supporting bearing in the bearing seat and causing bearing damage when the ball screw of the machine tool rotates, prolongs the service life of the bearing, does not need to be maintained frequently, reduces machine tool shutdown frequency, and is suitable for wide machine tool bearing protection structures.

To solve the technical problem, the utility model discloses the technical scheme who takes does:

the utility model relates to a lathe bearing protective structure, lathe bearing protective structure include ball screw, ball screw lower extreme installation precision bearing, precision bearing installs in the bearing housing, ball screw is located the rigidity suit oil slinger of bearing housing top, the oil slinger includes cylindric structure's oil slinger body and annular structure's oil slinger flange portion, bearing housing inner wall upper portion set up boss portion, install the oil slinger on the boss portion, the oil slinger suit is in the oil slinger body outer lane of oil slinger, the oil slinger is located oil slinger flange portion below position, set up clearance portion between oil slinger body and the oil slinger, set up clearance portion between boss portion and the oil slinger body outer lane.

The oil slinger is characterized in that an oil slinger body and an oil slinger flange part of the oil slinger are of an integrated structure, and the oil slinger body and the oil slinger flange part are of a T-shaped structure.

The oil slinger of the machine tool bearing protection structure is fixedly installed on a ball screw, the inner wall of an oil slinger body of the oil slinger is provided with an installation groove I which is arranged along the circumference of the inner wall of the oil slinger body, and a sealing ring I is clamped in the installation groove I.

The outer side face of the oil deflector of the machine tool bearing protection structure is provided with an installation groove II which is arranged along the outer side face of the oil deflector for a circle, a sealing ring II is clamped in the installation groove II, and the sealing ring II is attached to the inner wall of the bearing sleeve simultaneously.

The clearance between the slinger body and the slinger of the machine tool bearing protection structure is between 0.2mm and 0.4 mm.

The clearance between the boss part of the machine tool bearing protection structure and the outer ring of the oil slinger body is between 0.2mm and 0.4 mm.

The oil slinger is characterized in that the upper end face of a flange part of the oil slinger is of a structure capable of being attached to a shaft shoulder of a ball screw, and a screw nut is further arranged at the lower end of the ball screw.

When the ball screw of the machine tool bearing protection structure rotates, the oil slinger arranged on the ball screw is set to be a structure capable of synchronously rotating along with the ball screw.

The oil slinger is characterized in that a ring groove is formed in the joint of an oil slinger body of the oil slinger and a flange part of the oil slinger, and the upper end of the oil slinger is of a structure capable of extending into the ring groove.

The upper end of the outer side face of the oil slinger is provided with a slope face arranged along the outer side face of the oil slinger in a circle, and a gap part is arranged between the surface of the ring groove and the slope face.

Adopt the technical scheme of the utility model, can obtain following beneficial effect:

lathe bearing protective structure, ball screw arranges perpendicularly, to the special environment of the ball screw work of lathe, carries out institutional advancement. An oil slinger is arranged on the ball screw (screw), an oil slinger is arranged on the bearing sleeve, the oil slinger is positioned below the oil slinger, and the oil slinger is fixedly connected with the bearing sleeve. When the machine tool works, under the driving of the servo motor, the ball screw rotates, the oil slinger fixed on the ball screw also synchronously rotates, dirt such as dirty lubricating oil on the ball screw flows downwards, and is thrown out due to centrifugal inertia generated by the rotation of the oil slinger along with the ball screw after passing through the oil slinger, so that the dirt cannot axially flow into the precision bearing along the ball screw to damage the precision bearing, and the reliability of the precision bearing (bearing) is effectively protected. And meanwhile, in order to prevent the oil stain thrown to the outer surface by the oil slinger from accumulating on the upper end surface of the bearing sleeve for a long time and moving towards the direction of the ball screw under the action of the surface tension of the liquid, the oil slinger is arranged at the boss part of the bearing sleeve. And because there is the clearance portion between oil slinger and the oil slinger, direct contact not, when ball screw is high-speed rotatory, oil slinger, bearing housing all keep the state fixed, and do not receive ball screw's motion influence, consequently, the utility model discloses a contact friction between oil slinger and the oil slinger does not exist to the structure, naturally also can not have sealing member deformation inefficacy scheduling problem, also does not have because violent friction is exothermic to cause lathe temperature rise, precision decline scheduling problem. Therefore, the precise bearing can effectively ensure long-time work, frequent shutdown and replacement are not needed, the cost is reduced, the service life is prolonged, and the labor intensity of operators is reduced. The machine tool bearing protection structure of the utility model can not be damaged, and has good oil-proof, dust-proof and water-proof effects; easy production and manufacture and low cost. Lathe bearing protective structure, simple structure, when the ball screw of lathe rotates, can prevent effectively that the greasy dirt on the ball screw from getting into the support bearing in the bearing frame and causing the bearing to damage, improve bearing life, do not need frequently to maintain, reduce lathe shut down frequency, be suitable for extensively.

Drawings

The contents of the description and the references in the drawings are briefly described as follows:

fig. 1 is a schematic cross-sectional structural view of a machine tool bearing protection structure according to the present invention;

fig. 2 is a schematic cross-sectional structural view of an oil slinger of the machine tool bearing protection structure of the present invention;

fig. 3 is a schematic structural diagram of an oil slinger of the machine tool bearing protection structure of the present invention;

FIG. 4 is a schematic cross-sectional view of a prior art machine tool bearing guard;

in the drawings, the reference numbers are respectively: 1. a ball screw; 2. a precision bearing; 3. a bearing housing; 4. an oil slinger; 5. An oil slinger body; 6. an oil slinger flange portion; 7. a boss portion; 8. an oil slinger; 9. a sealing ring I; 10. a sealing ring II; 11. the inner wall of the bearing sleeve; 12. a ball screw shoulder; 13. a feed screw nut; 14. a ring groove; 15. A slope surface; 16. a bearing gland; 17. mounting a groove I; 18. mounting a groove II; 19. an oil-proof sealing ring.

Detailed Description

The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings, wherein the embodiments of the present invention are described in detail with reference to the accompanying drawings, for example, the shapes, structures, mutual positions and connection relations of the components, the functions and operation principles of the components, and the like:

as shown in the attached drawing 1, the utility model relates to a lathe bearing protective structure, lathe bearing protective structure include

ball screw

1, 1 lower extreme installation precision bearing 2 of ball screw, precision bearing 2 installs in bearing housing 3, ball screw 1 is located the fixed position suit oil slinger 4 of 3 tops of bearing housing, oil slinger 4 includes cylindric structure's oil slinger body 5 and annular structure's oil

slinger flange portion

6, 3 inner wall upper portions of bearing housing set up boss portion 7, install oil slinger 8 on

boss portion

7, 8 suits of oil slinger are in 5 outer lanes of oil slinger body of oil slinger 4, oil slinger 8 is located 6 below positions of oil slinger flange portion, sets up clearance portion between oil slinger body 5 and the oil slinger 8, sets up clearance portion between boss portion 7 and the 5 outer lanes of oil slinger body. Above-mentioned structure, ball screw arranges perpendicularly, to the special environment of the ball screw work of lathe, carries out institutional advancement. An oil slinger is arranged on the ball screw (screw), an oil slinger is arranged on the bearing sleeve, the oil slinger is positioned below the oil slinger, and the oil slinger is fixedly connected with the bearing sleeve. When the machine tool works, under the driving of the servo motor, the ball screw rotates, the oil slinger fixed on the ball screw also synchronously rotates, dirt such as dirty lubricating oil on the ball screw flows downwards, and is thrown out due to centrifugal inertia generated by the rotation of the oil slinger along with the ball screw after passing through the oil slinger, so that the dirt cannot axially flow into the precision bearing along the ball screw to damage the precision bearing, and the reliability of the precision bearing (bearing) is effectively protected. And meanwhile, in order to prevent the oil stain thrown to the outer surface by the oil slinger from accumulating on the upper end surface of the bearing sleeve for a long time and moving towards the direction of the ball screw under the action of the surface tension of the liquid, the oil slinger is arranged at the boss part of the bearing sleeve. And because there is the clearance portion between oil slinger and the oil slinger, direct contact not, when ball screw is high-speed rotatory, oil slinger, bearing housing all keep the state fixed, and do not receive ball screw's motion influence, consequently, the utility model discloses a contact friction between oil slinger and the oil slinger does not exist to the structure, naturally also can not have sealing member deformation inefficacy scheduling problem, also does not have because violent friction is exothermic to cause lathe temperature rise, precision decline scheduling problem. Therefore, the precise bearing can effectively ensure long-time work, frequent shutdown and replacement are not needed, the cost is reduced, the service life is prolonged, and the labor intensity of operators is reduced. The machine tool bearing protection structure of the utility model can not be damaged, and has good oil-proof, dust-proof and water-proof protection effects; and the method is easy to produce and manufacture, has low cost and is suitable for wide application. Lathe bearing protective structure, simple structure, when the ball screw of lathe rotates, can prevent effectively that the greasy dirt on the ball screw from getting into the support bearing in the bearing frame and causing the bearing to damage, improve bearing life, do not need frequently to maintain, reduce lathe shut down frequency, be suitable for extensively.

The utility model provides a lathe, ball screw pass through precision bearing and are connected with the bearing housing realization, and ball screw arranges perpendicularly, and under servo motor is electronic, can rotate for the bearing housing. The oil slinger body 5 and the oil slinger flange part 6 of the oil slinger 4 are integrally umbrella-shaped, and the oil slinger covers the oil slinger and the bearing sleeve, so that dirt such as dirty lubricating oil and the like is effectively prevented from entering the bearing sleeve.

The oil slinger 4 is characterized in that an oil slinger body 5 and an oil slinger flange part 6 are arranged into an integral structure, and the oil slinger body 5 and the oil slinger flange part 6 are of a T-shaped structure. The oil slinger integrated structure is made of materials for manufacturing the sealing ring. And the oil slinger flange part is used for contacting with a ball screw shaft shoulder, so that the contact area is increased, the fixing performance of the oil slinger relative to the ball screw is improved, and the oil slinger is ensured to synchronously rotate along with the ball screw all the time. The oil slinger flange part has the function of shielding dirt such as dirty lubricating oil from the upper part, so that the dirt such as the dirty lubricating oil is efficiently and cleanly thrown out when the oil slinger rotates.

The oil slinger 4 of the machine tool bearing protection structure is fixedly installed on the ball screw 1, the inner wall of the oil slinger body 5 of the oil slinger 4 is provided with an installation groove I which is arranged along the circumference of the inner wall of the oil slinger body 5, and a sealing ring I9 is clamped in the installation groove I. Above-mentioned structure, the setting of sealing washer I9 realizes sealed between oil slinger and the ball screw, prevents that the filth from getting into, simultaneously, effectively plays dustproof, water-proof effects, avoids influencing the foreign object entering of bearing reliability.

The outer side surface of the oil slinger 8 of the machine tool bearing protection structure is provided with a mounting groove II which is arranged along the periphery of the outer side surface of the oil slinger 8, a sealing ring II 10 is clamped in the mounting groove II, and the sealing ring II 10 is attached to the inner wall 11 of the bearing sleeve 3. Above-mentioned structure through the setting of sealing washer II 10, realizes sealed between oil scraper ring and the bearing housing, prevents that the filth from getting into, simultaneously, effectively plays dustproof, waterproof effect, avoids influencing the foreign object entering of bearing reliability.

The clearance part between the slinger body 5 and the slinger 8 of the slinger 4 of the machine tool bearing protection structure is between 0.2mm and 0.4 mm. Above-mentioned structure, the setting of this clearance portion size for can not direct contact between oil slinger and the oil slinger, avoid both frictions to damage the oil slinger.

The clearance between the boss part 7 of the machine tool bearing protection structure and the outer ring of the oil slinger body 5 is between 0.2mm and 0.4 mm. By the structure, due to the arrangement of the size of the gap part, the oil slinger is not in direct contact with the boss part, and the oil slinger is prevented from being damaged by friction between the oil slinger and the boss part.

The upper end face of the oil slinger flange part 6 of the oil slinger 4 is of a structure which can be attached to a ball screw shaft shoulder 12, and the lower end of the ball screw 1 is also provided with a screw nut 13. By means of the structure, the upper end face of the oil slinger is tightly abutted to the ball screw shaft shoulder, so that the oil slinger cannot axially move along the ball screw, the lower end face of the oil slinger is in contact limit with the boss part, and reliable installation is achieved.

When the ball screw 1 of the machine tool bearing protection structure rotates, the oil slinger 4 arranged on the ball screw 1 is set to be a structure capable of synchronously rotating along with the ball screw 1.

The oil slinger 4 is characterized in that a ring groove 14 is formed in the joint of an oil slinger body 5 and an oil slinger flange part 6, and the upper end of an oil slinger 8 is of a structure capable of extending into the ring groove 14. The upper end of the outer side surface of the oil slinger 8 is provided with a slope surface 15 which is arranged along the outer side surface of the oil slinger 8 in a circle, and a gap part is arranged between the surface of the ring groove 14 and the slope surface 15. In the structure, the lower end face of the oil slinger and the oil slinger have a part of overlapped part in the axial direction, and the ring groove is not contacted with the oil slinger. Therefore, even if a small amount of dirt such as dirty lubricating oil flows downwards along the oil slinger, the dirt cannot reach the oil slinger part, and even if the dirt reaches the oil slinger part, the dirt can be left along the slope surface and cannot enter the bearing sleeve. And the annular groove and the slope surface are provided with gap parts which can not be contacted, so that when the ball screw rotates, the rotating oil slinger and the fixed oil slinger can not be contacted, and the problem of friction can not occur.

The present invention has been described in detail with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above embodiments, and the present invention can be implemented in various ways without modification, and the present invention is not limited by the above embodiments.

Claims

1. The utility model provides a lathe bearing protective structure which characterized in that: the machine tool bearing protection structure comprises a ball screw (1), a precision bearing (2) is installed at the lower end of the ball screw (1), the precision bearing (2) is installed in a bearing sleeve (3), a position of the ball screw (1) above the bearing sleeve (3) is fixedly sleeved with an oil slinger (4), the oil slinger (4) comprises an oil slinger body (5) with a cylindrical structure and an oil slinger flange part (6) with an annular structure, a boss part (7) is arranged on the upper part of the inner wall of the bearing sleeve (3), an oil slinger (8) is installed on the boss part (7), the oil slinger (8) is located below the oil slinger flange part (6), a gap part is arranged between the oil slinger body (5) and the oil slinger (8), and a gap part is arranged between the boss part (7) and the outer ring of the oil slinger body (5.

2. The machine tool bearing shield structure of claim 1, wherein: the oil slinger is characterized in that an oil slinger body (5) and an oil slinger flange part (6) of the oil slinger (4) are of an integrated structure, and the oil slinger body (5) and the oil slinger flange part (6) are of a T-shaped structure.

3. The machine tool bearing shield structure of claim 2, wherein: the oil slinger of the machine tool bearing protection structure is characterized in that an oil slinger (4) is fixedly installed on a ball screw (1), an installation groove I is formed in the inner wall of an oil slinger body (5) of the oil slinger (4) and is arranged along the inner wall of the oil slinger body (5) in a circle, and a sealing ring I (9) is clamped in the installation groove I.

4. The machine tool bearing shield structure according to claim 1 or 2, wherein: the outer side face of the oil deflector ring (8) of the machine tool bearing protection structure is provided with a mounting groove II which is arranged along the outer side face of the oil deflector ring (8) in a circle, a sealing ring II (10) is clamped in the mounting groove II, and the sealing ring II (10) is attached to the inner wall (11) of the bearing sleeve (3) at the same time.

5. The machine tool bearing shield structure according to claim 1 or 2, wherein: the clearance between the slinger body (5) and the slinger (8) of the slinger (4) of the machine tool bearing protection structure is between 0.2mm and 0.4 mm.

6. The machine tool bearing shield structure according to claim 1 or 2, wherein: the clearance part between the boss part (7) of the machine tool bearing protection structure and the outer ring of the oil slinger body (5) is between 0.2mm and 0.4 mm.

7. The machine tool bearing shield structure according to claim 1 or 2, wherein: the oil slinger is characterized in that the upper end face of an oil slinger flange part (6) of the oil slinger (4) is of a structure capable of being attached to a ball screw shaft shoulder (12), and a screw nut (13) is further arranged at the lower end of the ball screw (1).

8. The machine tool bearing shield structure according to claim 1 or 2, wherein: when the ball screw (1) of the machine tool bearing protection structure rotates, the oil slinger (4) installed on the ball screw (1) is set to be a structure capable of synchronously rotating along with the ball screw (1).

9. A machine tool bearing shield structure according to claim 2 or 3, wherein: the oil slinger is characterized in that a ring groove (14) is formed in the joint of an oil slinger body (5) and an oil slinger flange part (6) of the oil slinger (4), and the upper end of the oil slinger (8) is of a structure capable of extending into the ring groove (14).

10. The machine tool bearing shield structure of claim 9, wherein: the upper end of the outer side face of the oil slinger (8) is provided with a slope face (15) which is arranged along the outer side face of the oil slinger (8) in a circle, and a gap part is arranged between the surface of the ring groove (14) and the slope face (15).