CN216692056U

CN216692056U - Nut rotation type ball screw

Info

Publication number: CN216692056U
Application number: CN202123300884.7U
Authority: CN
Inventors: 赵丽; 梁海清
Original assignee: Shenzhen Jinzhan Transmission Technology Co ltd
Current assignee: Shenzhen Jinzhan Transmission Technology Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-06-07
Anticipated expiration: 2031-12-24

Abstract

The utility model discloses a nut rotating type ball screw, which comprises: the outer side of the screw rod is provided with a nut, and a ball is arranged between the nut and the screw rod; two sealing gaskets are arranged and are respectively connected to two sides of the nut; the lubricating mechanism is arranged in the nut and rotationally lubricates the ball relative to the space between the nut and the screw rod.

Description

Nut rotation type ball screw

Technical Field

The utility model relates to the technical field of ball screws, in particular to a nut rotating type ball screw.

Background

The ball screw is an ideal product for converting rotary motion into linear motion or converting linear motion into rotary motion, is the most commonly used transmission element on tool machinery and precision machinery, has the main function of converting rotary motion into linear motion or converting torque into axial repeated acting force, and has the characteristics of high precision, reversibility and high efficiency. The ball screw (screw shaft is widely used in various industrial equipments and precision instruments) because of its small frictional resistance.

An existing nut rotation type ball screw of patent application No. 202021159993.4, wherein through setting up rubber sealing retainer ring, left side bearing frame, right side bearing frame, electric putter and base, utilize the mutually supporting effect between them, thereby can realize avoiding the foreign matter to get into the damage that causes the lead screw between lead screw and the nut, ball screw's security has been promoted, however, in the nut rotates the period, be in the roll state between the ball in the nut and the lead screw, lubricating oil is attached to on the lead screw after using a period easily, lead to the frictional resistance grow between ball and the lead screw, the use of inconvenient lead screw. To this end, we propose a nut rotating ball screw.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a nut-rotating ball screw, which solves the above problems of the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme: a nut-rotating ball screw comprising:

the outer side of the screw rod is provided with a nut, and a ball is arranged between the nut and the screw rod;

two sealing gaskets are arranged and are respectively connected to two sides of the nut;

and the lubricating mechanism is arranged inside the nut and is used for rotatably lubricating the ball relative to the space between the nut and the screw rod.

Preferably, the lubricating mechanism comprises a bolt mounted on the outer side of a nut, a lubricating area for supplying lubricating oil to the ball is arranged in the nut, and the position of the bolt at the nut is a lubricating oil injection port.

Preferably, the lubrication area communicates with the ball through a passage, the ball being lubricated by the lubricating oil in the passage.

Preferably, the inner ring of the sealing gasket is attached to the outer side of the screw rod, and the sealing gasket is fixedly connected with the nut.

Preferably, the inner wall of the sealing gasket is provided with a sealing plate inserted into the screw rod, the sealing plate is matched with the groove in the screw rod in shape, and the sealing plate and the sealing gasket are rubber rings.

The utility model has at least the following beneficial effects:

compared with the prior art that the ball in the nut and the lead screw are in a rolling state during the rotation period of the nut, lubricating oil is easy to adhere to the lead screw after being used for a period of time, so that the friction resistance between the ball and the lead screw is increased, and the lead screw is inconvenient to use.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a partial cross-sectional view of the present invention;

FIG. 3 is a structural gasket construction of the present invention;

fig. 4 is a side cross-sectional view of the gasket of the present invention.

In the figure: 1-a screw rod; 2-a nut; 3-rolling balls; 4-a lubricating mechanism; 41-lubrication area; 42-bolt; 43-channel; 5-a sealing gasket; 6-sealing plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a nut-rotating ball screw comprising:

the screw rod 1, the outside of the screw rod 1 is provided with a nut 2, a ball 3 is arranged between the nut 2 and the screw rod 1, and the nut 2 makes linear motion on the screw rod 1 under the action of the ball 3 by rotating the nut 2;

the two sealing gaskets 5 are respectively connected to two sides of the nut 2, and the two sealing gaskets 5 are positioned at two ends of the nut 2 for sealing, so that the possibility that impurities such as dust are keyed into the nut 2 is reduced, and the long-term use of the nut screw rod is facilitated;

the lubricating mechanism 4 is installed inside the nut 2, the ball 3 is lubricated in a rotating mode between the nut 2 and the screw rod 1 through the lubricating mechanism 4, the nut screw rod is conveniently lubricated through the lubricating mechanism 4, lubrication of the nut screw rod can be guaranteed on the premise that two ends of the nut screw rod are sealed, and long-term use of the nut screw rod is facilitated.

The lubricating mechanism 4 comprises a bolt 42 installed on the outer side of the nut 2, the bolt is in threaded connection with the nut 2 in a spiral mode, a lubricating area 41 used for supplying lubricating oil to the ball 3 is arranged inside the nut 2, the lubricating area 41 is used for storing the lubricating oil, a lubricating oil injection opening is formed in the position, located at the nut 2, of the bolt 42, the lubricating oil injection opening facilitates injection of the lubricating oil, and the lubricating area 41 facilitates adhesion of the lubricating oil to the surface of the ball 3.

The lubrication area 41 communicates with the ball 3 through a channel 43, and the channel 43 facilitates slow injection of the lubricant into the surface of the ball 3, the ball 3 being lubricated by the lubricant in the channel 43.

The inner ring of the sealing gasket 5 is attached to the outer side of the screw rod 1, the sealing gasket 5 is fixedly connected with the nut 2, the sealing gasket 5 is convenient to seal the nut 2, external impurities are further reduced from entering the nut 2, and the service life of the ball screw is prolonged.

The inner wall of the sealing gasket 5 is provided with a sealing plate 6 inserted into the screw rod 1, the sealing plate 6 is matched with the groove shape in the screw rod 1, the sealing plate 6 and the sealing gasket 5 are rubber rings, the sealing plate 6 and the sealing gasket 5 are integrally formed, when the nut 2 moves to one side, the sealing plate 6 positioned at the front section bends to one side of the sealing gasket 5, so that impurities on the surface of the screw rod 1 can be accumulated conveniently, when the nut 2 moves reversely, the sealing gasket 5 bends outwards, the impurities are pushed away from the surface of the sealing plate 6, and further the impurities are more conveniently removed.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A nut-rotating ball screw comprising:

the screw rod (1), the outside of the screw rod (1) is provided with a nut (2), and a ball (3) is arranged between the nut (2) and the screw rod (1);

the method is characterized in that:

two sealing gaskets (5) are arranged, and the two sealing gaskets (5) are respectively connected to two sides of the nut (2);

the lubricating mechanism (4) is installed inside the nut (2), and the ball (3) is lubricated in a rotating mode relative to the position between the nut (2) and the screw rod (1) through the lubricating mechanism (4).

2. The nut-rotating ball screw of claim 1, wherein: the lubricating mechanism (4) comprises a bolt (42) installed on the outer side of the nut (2), a lubricating area (41) used for supplying lubricating oil to the ball (3) is arranged inside the nut (2), and the position, located at the nut (2), of the bolt (42) is a lubricating oil injection port.

3. The nut-rotating ball screw according to claim 2, wherein: the lubrication area (41) communicates with the balls (3) through a channel (43), the balls (3) being lubricated by the lubricating oil in the channel (43).

4. The nut-rotating ball screw of claim 1, wherein: the inner ring of the sealing gasket (5) is attached to the outer side of the screw rod (1), and the sealing gasket (5) is fixedly connected with the nut (2).

5. The nut-rotating ball screw according to claim 4, wherein: the inner wall of the sealing gasket (5) is provided with a sealing plate (6) inserted into the screw rod (1), the sealing plate (6) is matched with the shape of the inner groove of the screw rod (1), and the sealing plate (6) and the sealing gasket (5) are rubber rings.