CN211624119U

CN211624119U - Ball screw with silencing device

Info

Publication number: CN211624119U
Application number: CN201922485521.1U
Authority: CN
Inventors: 王宁
Original assignee: Jiashi Transmission Technology Tianjin Co ltd
Current assignee: Jiashi Transmission Technology Tianjin Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-10-02
Anticipated expiration: 2029-12-31

Abstract

The utility model provides a ball screw with silencing device belongs to the ball screw field. The ball screw with the silencing device comprises a ball screw component, a nut silencing component and an end cover silencing component. The nut is sleeved on the outer surface of the screw rod, the housing is connected on the outer surface of the nut, and the end cover is fixed at one end of the nut. Nut amortization subassembly sets up the nut with between the housing, the sound wave water conservancy diversion piece first amortization cotton board the acoustical panel second amortization cotton board and first acoustic celotex board sets gradually from inside to outside, end cover amortization subassembly sets up in the end cover, the particle acoustic baffle third amortization cotton board and the second acoustic celotex board sets gradually, just the particle acoustic baffle is close to the nut sets up. The problem that the steel balls roll between the screw rod and the screw cap and move in a circulating system to a certain degree of noise is solved.

Description

Ball screw with silencing device

Technical Field

The utility model relates to a ball screw field particularly, relates to a ball screw with silencing device.

Background

At present, a ball screw is the most commonly used transmission element in tool machines and precision machines, and 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.

When the ball screw is driven, the steel balls roll between the screw and the nut to produce a certain degree of noise pollution.

SUMMERY OF THE UTILITY MODEL

In order to make up for above not enough, the utility model provides a ball screw with silencing device aims at improving the noise pollution problem that ball screw produced when the transmission.

The utility model discloses a realize like this:

the utility model provides a ball screw with silencing device, including ball screw subassembly, nut amortization subassembly and end cover amortization subassembly.

The ball screw assembly comprises a screw, a nut, a housing, an end cover and balls, the nut is sleeved on the outer surface of the screw, the housing is connected on the outer surface of the nut, the end cover is fixed at one end of the nut, and the balls are arranged in ball grooves formed in the inner wall of the nut.

The nut amortization subassembly includes sound wave water conservancy diversion piece, first amortization cotton board, acoustical panel, second amortization cotton board and first acoustic celotex board, the nut amortization subassembly sets up the nut with between the housing, the sound wave water conservancy diversion piece first amortization cotton board the acoustical panel second amortization cotton board and first acoustic celotex board sets gradually from the inside to the outside.

The end cover amortization subassembly includes particle acoustic baffle, third noise elimination cotton board and second acoustic celotex board, the end cover amortization subassembly sets up in the end cover, the particle acoustic baffle the third noise elimination cotton board and the second acoustic celotex board sets gradually, just the particle acoustic baffle is close to the nut sets up.

In an embodiment of the present invention, the two ends of the nut are respectively provided with a first sealing element and a second sealing element, and the first sealing element is disposed near one end of the end cover.

In an embodiment of the present invention, the first sealing member and the second sealing member are both rubber sealing rings.

In an embodiment of the present invention, the sound-absorbing holes are uniformly formed in the sound-absorbing plate.

In an embodiment of the present invention, the silencing hole is a Z-shaped silencing hole.

The utility model discloses an in one embodiment, first recess has been seted up to the nut lateral wall, seted up in the both sides of housing with the corresponding second recess of first recess.

The utility model discloses an in one embodiment, sound wave water conservancy diversion piece, the cotton board of first amortization, acoustical panel, the cotton board of second amortization and first acoustical panel all be located first recess with between the second recess.

The utility model discloses an in one embodiment, third recess and fourth recess have been seted up at the both ends of nut, first sealing member with the second sealing member be located the third recess respectively with in the fourth recess.

In an embodiment of the present invention, the sound-absorbing plate, the first sound-insulating plate and the second sound-insulating plate are porous foam plates.

In one embodiment of the present invention, the thickness of the particulate sound absorbing sheet is not less than five millimeters.

The utility model has the advantages that: when the ball rolls in the screw cap, the noise transmitted out is firstly transmitted outwards through the sound wave guide plate and then absorbed and weakened through the first silencing cotton plate, the rest noise is continuously transmitted to the silencing plate, at the moment, part of the noise is eliminated by the sound-absorbing board, part of the noise is continuously transmitted to the second sound-absorbing cotton board and the first sound-absorbing board, the first sound-absorbing board blocks the rest of the noise and reflects the rest of the noise back to the first sound-absorbing cotton board, the sound-absorbing board and the second sound-absorbing cotton board for absorption and attenuation, part of the rest of the noise is firstly absorbed and attenuated by the particle sound-absorbing board, the rest of the noise is continuously transmitted outwards and sequentially passes through the third sound-absorbing cotton board and the second sound-absorbing board, the second sound-absorbing board blocks the noise and reflects the rest of the noise to the third sound-absorbing cotton board and the particle sound-absorbing board, and the third sound-absorbing cotton board and the particle sound-absorbing board continuously absorb and attenuate the noise, and finally the purpose of noise reduction is achieved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic view of a split structure of a ball screw according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a nut silencing assembly according to an embodiment of the present invention;

fig. 3 is a schematic structural view of an end cover noise reduction assembly according to an embodiment of the present invention;

fig. 4 is a schematic view of a shell cutting structure provided in an embodiment of the present invention;

fig. 5 is a schematic view of a nut cutting structure according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a third groove and a fourth groove provided in the embodiment of the present invention;

fig. 7 is a schematic view of a ball screw structure according to an embodiment of the present invention.

In the figure: 100-a ball screw assembly; 110-screw; 120-a nut; 1210-a first groove; 1220-a third groove; 1230-fourth groove; 130-a housing; 1310 — a second groove; 140-an end cap; 150-a first seal; 160-a second seal; 170-balls; 172-ball grooves; 200-a nut noise dampening assembly; 210-a sound wave deflector; 220-a first sound damping cotton plate; 230-a sound-deadening plate; 232-silencing hole; 240-a second sound damping cotton plate; 250-a first acoustic panel; 300-end cap noise attenuation components; 310-particulate acoustic panel; 320-third sound-eliminating cotton board; 330-second baffle.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the utility model provides a. Embodiments, all other embodiments obtained by a person skilled in the art without any inventive step are within the scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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 should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

Referring to fig. 1-7, the present invention provides a technical solution: a ball screw with a sound dampening device includes a ball screw assembly 100, a nut sound dampening assembly 200, and an end cap sound dampening assembly 300.

Referring to fig. 1, 4, 5, 6 and 7, the ball screw assembly 100 includes a screw 110, a nut 120, a housing 130, an end cap 140 and balls 170, the nut 120 is sleeved on an outer surface of the screw 110, a first sealing member 150 and a second sealing member 160 are respectively disposed at two ends of the nut 120, and the first sealing member 150 is disposed at an end close to the end cap 140. The first seal 150 and the second seal 160 are both rubber seals. The first and

second seals

150 and 160 are located in the third and

fourth grooves

1220 and 1230, respectively, and the first and

second seals

150 and 160 have a certain function of blocking dust by their design. The housing 130 is coupled to an outer surface of the nut 120, the housing 130 is coupled to the nut 120 by a screw, and second grooves 1310 corresponding to the first grooves 1210 are formed in both sides of the housing 130. The end cap 140 is fixed at one end of the nut 120, the end cap 140 is connected with the nut 120 by welding, the ball 170 is disposed in a ball groove 172 formed on an inner wall of the nut 120, a first groove 1210 is formed on an outer wall of the nut 120, and a third groove 1220 and a fourth groove 1230 are formed at two ends of the nut 120.

Referring to fig. 1 and 2, the nut silencing assembly 200 includes a sound wave deflector 210, a first silencing cotton plate 220, a silencing plate 230, a second silencing cotton plate 240 and a first silencing plate 250, wherein when the balls 170 roll in the nut 120, the noise emitted from the balls is first conducted outwards through the sound wave deflector 210, then absorbed and attenuated by the first silencing cotton plate 220, the remaining noise is continuously conducted to the silencing plate 230, the silencing plate 230 is uniformly provided with silencing holes 232, and the silencing holes 232 are Z-shaped silencing holes. At this time, a part of the noise is absorbed by the sound-deadening plate 230, and a part of the noise continues to be attenuated through the sound-deadening holes 232 and continues to be transmitted to the second sound-deadening cotton plate 240 and the first sound-deadening cotton plate 250, and the first sound-deadening cotton plate 250 blocks the remaining noise and reflects the remaining noise back to the first sound-deadening cotton plate 220, the sound-deadening plate 230, and the second sound-deadening cotton plate 240, thereby finally achieving the purpose of noise reduction.

Nut acoustic dampening assembly 200 is disposed between nut 120 and housing 130 with acoustic baffle 210, first acoustic dampening cotton 220, acoustic dampening plate 230, second acoustic dampening cotton 240, and first acoustic dampening plate 250 all positioned between first recess 1210 and second recess 1310. The acoustic wave guide plate 210, the first acoustic wool sheet 220, the acoustic panel 230, the second acoustic wool sheet 240, and the first acoustic panel 250 are sequentially disposed from the inside to the outside. The sound-absorbing plate 230, the first sound-absorbing plate 250, and the second sound-absorbing plate 330 are porous foam plates, and the noise is absorbed by the porous property of the material itself.

Referring to fig. 1 and 3, the end cap noise damping assembly 300 includes a particulate sound absorbing panel 310, a third sound absorbing cotton panel 320 and a second sound insulating panel 330, the end cap noise damping assembly 300 is disposed in the end cap 140, the particulate sound absorbing panel 310, the third sound absorbing cotton panel 320 and the second sound insulating panel 330 are sequentially disposed, the particulate sound absorbing panel 310 is disposed near the nut 120, and the thickness of the particulate sound absorbing panel 310 is not less than five millimeters. Part of the noise is absorbed and weakened by the particle sound absorption plate 310, and the rest of the noise is conducted outwards continuously and passes through the third sound absorption cotton plate 320 and the second sound insulation plate 330 in sequence, so that the noise is weakened.

The working principle of the ball screw with the silencing device is as follows: when the ball 170 rolls in the nut 120, the noise transmitted out is firstly transmitted outwards through the sound wave deflector 210, then absorbed and weakened through the first silencing cotton plate 220, the rest noise is continuously transmitted to the silencing plate 230, the silencing plate 230 is uniformly provided with silencing holes 232, and the silencing holes 232 are Z-shaped silencing holes. At this time, a part of the noise is absorbed by the sound-absorbing plate 230, a part of the noise continues to be attenuated through the sound-absorbing hole 232 and continues to be transmitted to the second sound-absorbing cotton plate 240 and the first sound-absorbing plate 250, the first sound-absorbing plate 250 blocks the remaining noise and reflects the remaining noise back to the first sound-absorbing cotton plate 220, the sound-absorbing plate 230 and the second sound-absorbing cotton plate 240 for absorption and attenuation, a part of the remaining noise is first absorbed and attenuated through the particle sound-absorbing plate 310, the remaining noise continues to be transmitted outward, and passes through the third sound-absorbing cotton plate 320 and the second sound-absorbing plate 330 in sequence, the second sound-absorbing plate 330 blocks the noise and reflects the remaining noise to the third sound-absorbing cotton plate 320 and the particle sound-absorbing plate 310, and the third sound-absorbing cotton plate 320 and the particle sound-absorbing plate 310 continue to absorb and attenuate the noise, and finally achieve the purpose of noise reduction.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. 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. A ball screw with a silencer is characterized by comprising

The ball screw assembly (100) comprises a screw (110), a nut (120), a housing (130), an end cover (140) and balls (170), wherein the nut (120) is sleeved on the outer surface of the screw (110), the housing (130) is connected to the outer surface of the nut (120), the end cover (140) is fixed at one end of the nut (120), and the balls (170) are arranged in ball grooves (172) formed in the inner wall of the nut (120);

the nut silencing assembly (200) comprises a sound wave guide piece (210), a first silencing cotton plate (220), a silencing plate (230), a second silencing cotton plate (240) and a first sound insulation plate (250), the nut silencing assembly (200) is arranged between the nut (120) and the housing (130), and the sound wave guide piece (210), the first silencing cotton plate (220), the silencing plate (230), the second silencing cotton plate (240) and the first sound insulation plate (250) are sequentially arranged from inside to outside;

end cover amortization subassembly (300), end cover amortization subassembly (300) include particle acoustic baffle (310), third sound damping cotton board (320) and second acoustic celotex board (330), end cover amortization subassembly (300) set up in end cover (140), particle acoustic baffle (310) third sound damping cotton board (320) and second acoustic celotex board (330) set gradually, just particle acoustic baffle (310) are close to nut (120) set up.

2. The ball screw with sound deadening apparatus of claim 1, wherein the nut (120) is provided at both ends thereof with a first seal member (150) and a second seal member (160), respectively, the first seal member (150) being provided near one end of the end cap (140).

3. The ball screw with sound deadening apparatus of claim 2, wherein the first seal (150) and the second seal (160) are both rubber seals.

4. The ball screw with a sound-deadening device according to claim 1, wherein the sound-deadening plate (230) is uniformly provided with sound-deadening holes (232).

5. The ball screw with sound deadening apparatus according to claim 4, wherein the sound deadening hole (232) is a Z-shaped sound deadening hole.

6. The ball screw with noise reduction device according to claim 1, wherein the outer side wall of the nut (120) is formed with a first groove (1210), and both sides of the housing (130) are formed with a second groove (1310) corresponding to the first groove (1210).

7. The ball screw with sound deadening apparatus according to claim 6, wherein the sound deflector (210), the first sound deadening cotton plate (220), the sound deadening plate (230), the second sound deadening cotton plate (240), and the first sound insulating plate (250) are located between the first recess (1210) and the second recess (1310).

8. The ball screw with noise damping device according to claim 2, wherein the nut (120) has a third groove (1220) and a fourth groove (1230) formed at both ends thereof, and the first seal (150) and the second seal (160) are respectively located in the third groove (1220) and the fourth groove (1230).

9. The ball screw with noise damping device according to claim 1, wherein the noise damping plate (230), the first noise damping plate (250) and the second noise damping plate (330) are made of porous foamed material.

10. The ball screw with sound deadening apparatus according to claim 1, wherein the particulate sound absorbing panel (310) has a thickness of not less than five millimeters.