CN218207668U

CN218207668U - Double-nut precision ball screw

Info

Publication number: CN218207668U
Application number: CN202222699158.5U
Authority: CN
Inventors: 代杰
Original assignee: Dongguan Zhongchenghao Precision Machinery Technology Co ltd
Current assignee: Dongguan Zhongchenghao Precision Machinery Technology Co ltd
Priority date: 2022-10-13
Filing date: 2022-10-13
Publication date: 2023-01-03
Anticipated expiration: 2032-10-13

Abstract

The utility model belongs to the technical field of ball screw, especially, be a two accurate ball screw of nut, the screw rod comprises a screw rod body, the screw rod body includes first antirust coat, enhancement layer, second antirust coat and wearing layer, the bottom of first antirust coat and the top fixed connection of enhancement layer, the bottom of enhancement layer and the top fixed connection of second antirust coat, the bottom of second antirust coat and the top fixed connection of wearing layer, the surface threaded connection of screw rod body has first nut, the one end of first nut is fixed with the connection pad. The utility model discloses a setting of first connecting block, second connecting block, slot and inserted block can make and do not have the clearance between first nut and the second nut, prevents that the dust from in clearance gets into first nut and second nut, avoids causing the influence to the use of ball, through the setting of screw, can realize fixing between first connecting block and the second connecting block, reinforcing stability.

Description

Double-nut precision ball screw

Technical Field

The utility model relates to a ball screw technical field specifically is a two nut precision ball screw.

Background

The precision ball screw is the most commonly used transmission element on tool machinery and precision machinery, and the main function of the precision ball screw is to convert rotary motion into linear motion or convert torque into axial repeated acting force, and the precision ball screw has the characteristics of high precision, reversibility and high efficiency. Because of having very little frictional resistance, the ball screw is widely applied to various industrial equipments and precision instruments, the ball screw is divided into single nut screw and double nut screw, when the double nut screw is used, stability and bearing capacity are all higher than Shan Luomu screw, so on precision machinery, the general double nut screw is used more;

when traditional two accurate ball screw of nut was used, all docked usually between two nuts, so joint department generally all can leave the clearance, leads to the dust to get into in the nut from the clearance easily to influence the use of ball, simultaneously, rust resistance is relatively poor, and when not being used for a long time, the surface rusts easily, therefore we have proposed the accurate ball screw of two nuts and have solved the above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a two accurate ball screw of nut has solved the dust and has got into nut and the relatively poor problem of antirust property from the clearance easily.

(II) technical scheme

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:

a double-nut precise ball screw comprises a screw body, wherein the screw body comprises a first antirust layer, a reinforcing layer, a second antirust layer and a wear-resistant layer, the bottom of the first antirust layer is fixedly connected with the top of the reinforcing layer, the bottom of the reinforcing layer is fixedly connected with the top of the second antirust layer, the bottom of the second antirust layer is fixedly connected with the top of the wear-resistant layer, a first nut is connected to the outer surface of the screw body in a threaded mode, a connecting disc is fixed to one end of the first nut, a second nut is connected to the outer surface of the screw body in a threaded mode, balls are arranged in threaded channels between the first nut and the screw body, a first connecting block is fixed to the other end of the first nut, a second connecting block is fixed to one end of the second nut, a slot is formed in the first connecting block, an inserting block is fixed to one side of the second connecting block, the inserting block is connected with the slot in a sliding mode, and the first connecting block and the inserting block are fixed through screws.

Furthermore, fixing holes are formed in the connecting disc, and the number of the fixing holes is four.

Further, the first antirust layer and the reinforcing layer are fixedly connected through an adhesive, and the first antirust layer is a special antirust peelable resin layer.

Further, the reinforcing layer is fixedly connected with the second anti-rust layer through an adhesive, and the reinforcing layer is a high-manganese steel layer.

Further, the second anti-rust layer and the wear-resistant layer are fixedly connected through an adhesive, and the wear-resistant layer is a wear-resistant alloy steel layer.

(III) advantageous effects

Compared with the prior art, the utility model provides a two nut precision ball screw possesses following beneficial effect:

the utility model discloses, through first connecting block, the second connecting block, the setting of slot and inserted block, it does not have the clearance to make between first nut and the second nut, prevent that the dust from getting into in first nut and the second nut from the clearance, avoid causing the influence to the use of ball, setting through the screw, can realize fixing between first connecting block and the second connecting block, strengthen stability, through setting up first antirust coat and second antirust coat, strengthen the antirust property of screw rod body, avoid the screw rod body not time spent for a long time, take place rusty situation, through setting up the enhancement layer, can strengthen the intensity of screw rod body, prolong the life of screw rod body, through setting up the wearing layer, strengthen the wear resistance of screw rod body, avoid the screw rod body to take place the serious condition of wearing and tearing after long-time use.

Drawings

FIG. 1 is a front view of the present invention;

fig. 2 is a bottom view of the first nut of the present invention;

fig. 3 is a schematic view of a second nut of the present invention;

fig. 4 is the internal schematic view of the screw body of the present invention.

In the figure: 1. a screw body; 101. a first antirust layer; 102. a reinforcing layer; 103. a second antirust layer; 104. a wear layer; 2. a first nut; 3. a connecting disc; 4. a second nut; 5. a first connection block; 6. a second connecting block; 7. a slot; 8. inserting a block; 9. a screw; 10. and (7) fixing holes.

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.

Examples

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, a double nut precision ball screw according to an embodiment of the present invention comprises a screw body 1, the screw body 1 comprises a first antirust layer 101, a reinforcing layer 102, a second antirust layer 103 and a wear layer 104, the bottom of the first antirust layer 101 is fixedly connected to the top of the reinforcing layer 102, the bottom of the reinforcing layer 102 is fixedly connected to the top of the second antirust layer 103, the bottom of the second antirust layer 103 is fixedly connected to the top of the wear layer 104, the outer surface of the screw body 1 is in threaded connection with a first nut 2, one end of the first nut 2 is fixed with a connecting plate 3, the outer surface of the screw body 1 is in threaded connection with a second nut 4, balls are arranged in a threaded passage between the first nut 2 and the screw body 1 and the second nut 4, the other end of the first nut 2 is fixed with a first connecting block 5, a second connecting block 6 is fixed at one end of a second nut 4, a slot 7 is arranged in the first connecting block 5, an insert block 8 is fixed at one side of the second connecting block 6, the insert block 8 is in sliding connection with the slot 7, the first connecting block 5 and the insert block 8 are fixed through a screw 9, it should be noted that when the nut is used, the second nut 4 is moved to the bottom of the first nut 2, the position of the second connecting block 6 is aligned with the position of the first connecting block 5, then the insert block 8 is inserted into the slot 7 in the first connecting block 5, through the arrangement of the insert block 8 and the slot 7, the butt joint part of the first nut 2 and the second nut 4 has no gap, thereby preventing dust from entering the first nut 2 and the second nut 4, thereby avoiding the dust from influencing the use of the ball bearing, after the insert, the screw 9 is screwed into the first connecting block 5 and the insert block 8, and the first nut 2 and the second nut 4 are fixed, the stability is enhanced, then, the fixed first nut 2 and the second nut 4 are provided with balls and screwed into the screw body 1 for use, the second antirust layer 103 is an oxygen zinc-rich primer layer, the antirust performance of the screw body 1 is enhanced, and the situation that the screw body 1 gets rusty when not used for a long time is avoided.

As shown in fig. 1, in some embodiments, fixing holes 10 are formed in the connection pad 3, and the number of the fixing holes 10 is four, and when the connection pad 3 needs to be connected to an external device, it may be connected by screwing bolts into the fixing holes 10.

As shown in fig. 4, in some embodiments, the first rust-preventive layer 101 and the reinforcing layer 102 are fixedly connected by an adhesive, the first rust-preventive layer 101 is a special rust-preventive peelable resin layer, and it should be noted that the rust-preventive performance of the screw body 1 is further enhanced by the first rust-preventive layer 101, so that the rust-preventive performance is better.

In some embodiments, as shown in fig. 4, the reinforcing layer 102 and the second rust-preventive layer 103 are fixedly connected by an adhesive, the reinforcing layer 102 is a high manganese steel layer, and it should be noted that, by the reinforcing layer 102, the strength of the screw body 1 can be enhanced, and the service life of the screw body 1 can be prolonged.

As shown in fig. 4, in some embodiments, the second rust-preventive layer 103 is fixedly connected to the wear-resistant layer 104 by an adhesive, the wear-resistant layer 104 is a wear-resistant alloy steel layer, and it should be noted that the wear-resistant layer 104 enhances the wear resistance of the screw body 1, thereby avoiding the situation that the screw body 1 is seriously worn after being used for a long time.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a two accurate ball screw of nut, includes screw rod body (1), its characterized in that: the screw rod body (1) comprises a first anti-rust layer (101), a reinforcing layer (102), a second anti-rust layer (103) and a wear-resistant layer (104), the bottom of the first anti-rust layer (101) is fixedly connected with the top of the reinforcing layer (102), the bottom of the reinforcing layer (102) is fixedly connected with the top of the second anti-rust layer (103), the bottom of the second anti-rust layer (103) is fixedly connected with the top of the wear-resistant layer (104), a first nut (2) is connected with the outer surface of the screw rod body (1) in a threaded manner, a connecting disc (3) is fixed to one end of the first nut (2), a second nut (4) is connected with the outer surface of the screw rod body (1) in a threaded manner, balls are arranged in a threaded passage between the first nut (2) and the second nut (4) and the screw rod body (1), a first connecting block (5) is fixed to the other end of the first nut (2), a second connecting block (6) is fixed to one side of the second connecting block (6), a sliding block (8) is fixed to one side of the inserting block (8), and a sliding block (8) is fixed to the inserting block (8).

2. A double nut precision ball screw as defined in claim 1 wherein: fixing holes (10) are formed in the connecting disc (3), and the number of the fixing holes (10) is four.

3. A double nut precision ball screw according to claim 1, wherein: the first antirust layer (101) and the reinforcing layer (102) are fixedly connected through an adhesive, and the first antirust layer (101) is a special antirust peelable resin layer.

4. A double nut precision ball screw as defined in claim 1 wherein: the reinforcing layer (102) is fixedly connected with the second anti-rust layer (103) through an adhesive, and the reinforcing layer (102) is a high-manganese steel layer.

5. A double nut precision ball screw according to claim 1, wherein: the second antirust layer (103) is fixedly connected with the wear-resistant layer (104) through an adhesive, and the wear-resistant layer (104) is a wear-resistant alloy steel layer.