CN221170626U - Low-noise screw-nut transmission mechanism - Google Patents
Low-noise screw-nut transmission mechanism Download PDFInfo
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- CN221170626U CN221170626U CN202323435637.7U CN202323435637U CN221170626U CN 221170626 U CN221170626 U CN 221170626U CN 202323435637 U CN202323435637 U CN 202323435637U CN 221170626 U CN221170626 U CN 221170626U
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 33
- 230000033001 locomotion Effects 0.000 claims abstract description 13
- 230000001360 synchronised effect Effects 0.000 claims description 24
- 230000003044 adaptive effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The utility model belongs to the field of mechanical structure transmission, and mainly provides a low-noise screw-nut transmission mechanism, which comprises a base; the device comprises a first bearing seat provided with a first bearing, a second bearing seat provided with a second bearing, a first screw rod, a second screw rod and a second screw rod, wherein the first screw rod is provided with a fixed end and an input end, the input end of the first screw rod penetrates through the first bearing and is fixed, and the fixed end of the first screw rod penetrates through the second bearing and is fixed; the first nut is arranged on the first screw rod and can do translational motion along the axial direction of the first screw rod; the first limiting structure comprises a first limiting surface and a second limiting surface which are matched with the shape of the first bearing seat, and the first bearing seat is respectively abutted with the first limiting surface and the second limiting surface; according to the utility model, the first limit structure is arranged, so that the first bearing seat can be quickly installed, the installation and debugging time of the first bearing seat is shortened, and the first bearing, the second bearing and the first screw rod are coaxially arranged.
Description
Technical Field
The utility model belongs to the technical field of mechanical transmission structures, and particularly relates to a screw-nut transmission mechanism with low noise.
Background
Screw drive is also called screw rotation, and the design principle of the screw drive is that rotary motion is converted into linear motion or the linear motion is converted into rotary motion; the principle is similar to that of a bolt and a nut, the control nut is fixed, the bolt can axially move and vice versa by rotating the bolt, the control bolt is fixed, the nut is rotated, and the nut can axially move; in the screw rod transmission, the screw rod corresponds to a nut and the screw rod corresponds to a bolt. Two ends of the screw rod are fixed by bearing seats and rotated by a motor; in screw rod transmission, the screw has two degrees of freedom of rotation and movement, and conventionally, only the degree of freedom is required to be moved, so that the rotational degree of freedom of the screw is generally required to be restrained through a guide rail, namely, the screw performs linear motion on the guide rail along the axial direction.
The existing screw rod transmission device is structurally characterized in that a screw rod motor is fixed on a motor base, a screw rod nut is fixed on a nut support, the nut support is fixed on a pair of guide rail sliding blocks, the other end of the screw rod is fixed on a bearing seat, and a structural mounting plate is added at the lowest end. The screw rod has low transmission precision and large friction force, and can generate larger noise.
Disclosure of utility model
The utility model solves the problems of large friction force, large noise and the like in the moving process of a screw rod transmission device in the prior art by providing the screw rod nut transmission mechanism with low noise.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
A low noise lead screw nut drive comprising:
A base;
The first bearing seat is internally provided with a first bearing, and the first bearing seat is arranged on the base;
The second bearing seat is internally provided with a second bearing, and the second bearing seat is arranged on the base;
The input end of the first screw rod penetrates through the first bearing and is fixed, and the fixed end of the first screw rod penetrates through the second bearing and is fixed;
the first nut is arranged on the first screw rod and can do translational motion along the axial direction of the first screw rod; and
The first limiting structure comprises a first limiting surface and a second limiting surface which are matched with the shape of the first bearing seat, and the first bearing seat is respectively abutted with the first limiting surface and the second limiting surface.
In some embodiments, the device further comprises a first guide rail arranged on the base, a first sliding block matched with the first guide rail is arranged on the first guide rail, the first sliding block is connected with the first nut, a third limiting surface matched with the shape of the first guide rail is arranged on the base, and one side of the first guide rail is abutted to the third limiting surface.
In some embodiments, the first slider is provided with a moving support, the moving support is provided with a nut support, and the first nut is arranged on the nut support, wherein the first nut and the nut support are provided with a buffer structure in the axial direction of the first screw rod.
In some embodiments, the nut bracket includes a bracket body and a fixing piece, and a preset gap is provided between the first nut and the fixing piece to form the buffer structure.
In some embodiments, the motor further comprises a first motor arranged on the base, a first synchronous wheel is arranged at the output end of the first motor, a second synchronous wheel is arranged at the input end of the first screw rod, and the first synchronous wheel is connected with the second synchronous wheel through a first synchronous belt.
In some embodiments, a first mounting bracket is arranged on the base, the first motor is arranged on the first mounting bracket, a fourth limiting surface is arranged on the base, and when the first mounting bracket is abutted to the fourth limiting surface, the plane where the first synchronous belt is located is perpendicular to the axis of the first screw rod.
In some embodiments, the side wall of the base is provided with a first notch for forming the fourth limiting surface, and the first mounting bracket is fixed on the first notch and abuts against the fourth limiting surface.
In some embodiments, a first shaft sleeve is arranged between the first bearing seat and the second synchronous wheel, one end of the first shaft sleeve is abutted to the first bearing seat, and the other end of the first shaft sleeve is abutted to the second synchronous wheel.
In some embodiments, the base is provided with a yielding groove consistent with the moving direction of the first sliding block, the moving support part passes through the base through the yielding groove, and a first installation position is arranged on the part of the moving support passing through the base.
In some embodiments, the first screw is a ball screw.
Compared with the prior art, the utility model has the beneficial effects that:
Through setting up the first limit structure that has first limit surface and second limit surface, carry out spacingly to first bearing axle bed to make the installation of first bearing frame can not deviate from actual position, thereby make the lead screw deflection little, reduce the frictional resistance between first nut and the first lead screw, and then the noise reduction, simultaneously, add first limit structure at will and can also shorten the installation time of first bearing frame, shorten the debugging time, improve installation effectiveness.
Through set up the spacing face of first notch formation fourth on the base lateral wall, carry out spacing butt to first installing support to make first synchronous area parallel mount, thereby reduce vibration, noise reduction.
The first nut and the nut support are provided with a preset gap, a buffer process is reserved for the first nut, and the first nut and the first screw rod are not easy to deform in cooperation, so that the resistance between the first nut and the first screw rod is reduced, and the noise in the moving process is further reduced.
Drawings
FIG. 1 is a first angular perspective view of a low noise lead screw nut transmission of the present utility model;
FIG. 2 is a perspective view of a base of a low noise lead screw nut transmission mechanism of the present utility model;
FIG. 3 is an enlarged view at B in FIG. 2;
FIG. 4 is a second angular perspective view of the base of a low noise lead screw nut drive of the present utility model;
FIG. 5 is an enlarged view at C in FIG. 4;
FIG. 6 is a front view of a low noise lead screw nut drive mechanism of the present utility model;
FIG. 7 is an enlarged view of FIG. 6 at D;
FIG. 8 is a cross-sectional view at A-A of FIG. 6;
FIG. 9 is a third angular perspective view of the base of a low noise lead screw nut transmission of the present utility model;
fig. 10 is a schematic view of the installation site side of the low noise lead screw nut transmission mechanism of the present utility model.
Detailed Description
The present application will be described in further detail with reference to the accompanying drawings. In the description of the present embodiment, unless otherwise indicated, the terms "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the present application must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
As shown in fig. 1 and 3, the low-noise screw nut structure provided by the present utility model mainly includes a base 100, a first bearing seat 200, a second bearing seat 300, a first screw 400, a first nut 500, and a first limiting structure 101. The first bearing seat 200 is arranged on the base 100 and fixed, and a first bearing 201 is arranged in the first bearing seat 200; the second bearing block 300 is disposed on the base 100 and fixed, and a second bearing 301 is disposed in the second bearing block 300; the first screw rod 400 has a fixed end and an input end, wherein the input end of the first screw rod 400 passes through the first bearing 201 and is fixed, and the fixed end of the first screw rod 400 passes through the second bearing 301 and is fixed; the first nut 500 is sleeved on the first screw rod 400 through threaded fit, and the first nut 500 can do reciprocating translational linear motion on the first screw rod 400, and the motion direction of the first nut is the axial direction of the first screw rod 400; the first limiting structure 101 is disposed on the base 100, the first limiting structure 101 includes a first limiting surface 1011 and a second limiting surface 1012, the first limiting surface 1011 and the second limiting surface 1012 are matched with the first bearing seat 200 in shape, the first bearing seat 200 is respectively abutted against the first limiting surface 1011 and the second limiting surface 1012 and fixedly mounted on the base 100, and the first bearing 201, the second bearing 301 and the first screw rod 400 are coaxially disposed through the limiting of the first limiting surface 1011 and the second limiting surface 1012, so that coaxiality between the three is ensured, and when the first screw rod 400 axially translates along the first screw rod 400 in the rotation process, friction between the first nut 500 and the first screw rod 400 is smaller, thereby reducing noise in transmission. Meanwhile, the first limiting structure 101 reduces the installation and debugging time of the first bearing seat 200, and simplifies the installation and debugging process. In this embodiment, the first limiting surface 1011 and the second limiting surface 1012 are formed by two bosses provided on the base 100, alternatively, the first limiting surface 1011 and the second limiting surface 1012 may be formed by slotting on the base 100, and the first limiting surface 1011 and the second limiting surface 1012 may be provided as a whole.
In one embodiment, as shown in fig. 6 and 8, the low-noise screw nut transmission mechanism further includes a first guide rail 104 disposed on the base 100, an adaptive first slider 1041 is disposed on the first guide rail 104, the first slider 1041 moves linearly along the guide rail, a moving support 1042 is further disposed on the first slider 1041, the first slider 1041 is connected with the moving support 1042, the moving support 1042 is connected with the nut support 501, the nut support 501 is connected with the nut 500, and the first slider 1041 performs rotation limiting on the first nut 500, so that the first nut 500 performs translational movement only along the axial direction of the first screw 400. In order to make the translation direction of the first slider 1041 coincide with the translation direction of the first nut 500, as shown in fig. 2 and 3, a third limiting surface 102 is provided on the base 100, where, when the first rail 104 is being installed, one side edge of the first rail 104 abuts against and is fixed to the third limiting surface 102. Through addding third limit surface 102, on the one hand reduces the assembly debugging time of first guide rail 104, and the installation is faster and the position is more accurate, on the other hand, the existence of third limit surface 102 makes the installation direction of first guide rail 104 unanimous with the installation direction of first lead screw 400, makes the translation direction of the first slider 1041 that sets up on first guide rail 104 and the first nut 500 that sets up on first lead screw 400 unanimous, avoids appearing first guide rail 104 skew for first lead screw 400, and then enlarges the resistance between first nut 500 and the first lead screw 400, increases the noise. In this embodiment, the third limiting surface 102 is formed by grooving on the base 100, alternatively, the third limiting surface 102 may be formed by providing a boss on the base 100.
In one embodiment, referring again to fig. 6 and 8, a moving bracket 1042 is provided on the first slider 1041, a nut bracket 501 is provided on the moving bracket 1042 to support and connect the first nut 500, and the first nut 500 is provided on the nut bracket 501, wherein a buffer structure is provided between the first nut 500 and the nut bracket 501 in the axial direction of the first screw 400. Through setting up buffer structure, can effectively absorb the vibration that first nut 500 removes in-process and produce, first nut 500 is difficult for the deformation with first lead screw 400 to reduce the resistance between first nut 500 and the first lead screw 400, and then the noise abatement.
Further, in order to facilitate the mounting of the first nut 500 on the nut bracket 501 and the formation of the buffer structure on the nut bracket 501, as shown in fig. 6 and 7, the nut bracket 501 includes a bracket body 2011 and a fixing piece 5012, and when the first nut 500 is mounted on the nut bracket 501, a preset gap 503 is provided between the first nut 500 and the fixing piece 5012 in the axial direction of the first screw 400 to form the buffer structure. Optionally, an elastic buffer material, such as an elastic pad or a spring, may be disposed in the preset gap 503, and the function of the buffer structure in this embodiment may also be implemented.
In one embodiment, as shown in fig. 9, the low-noise screw nut transmission mechanism further includes a first motor 600 disposed on the base 100, a first synchronizing wheel 601 is disposed at an output end of the first motor 600, a second synchronizing wheel 401 is disposed at an input end of the first screw 400, and the first synchronizing wheel 601 and the second synchronizing wheel 401 are in transmission connection through a first synchronizing belt 603, so that vibration in a transmission process is reduced, and noise is reduced.
Further, a first mounting bracket 602 is disposed on the base 100, the first motor 600 is disposed on the first mounting bracket 602, where a fourth limiting surface 1031 is disposed on the base 100, and when the first mounting bracket 602 is mounted on the base 100 and abuts against the fourth limiting surface 1031, a plane on which the first synchronous belt 603 for connecting the first synchronous wheel 601 and the second synchronous wheel 401 rotates is perpendicular to an axial direction of the first screw rod 400, i.e. the first synchronous belt 603 can be disposed in parallel, so that torsion of the first synchronous belt 603 or occurrence of relative offset phenomenon between the first synchronous wheel 601 and the second synchronous wheel 401 is avoided, and friction resistance between the first synchronous belt 603 and the first synchronous wheel 601 and the second synchronous wheel 401 is reduced, and noise in a transmission process is reduced.
Further, as shown in fig. 4 and 5, a first notch 103 is provided on a side of the base 100, the first notch 103 is used for installing a first mounting bracket 602, and the first notch 103 is used for forming a fourth limit surface 1031, when the first mounting bracket 602 is installed on the first notch 103 through a first threaded hole 1032, the first mounting bracket 602 abuts against the fourth limit surface 1031, and at this time, a first synchronous belt 603 for connecting the first synchronous wheel 601 and the second synchronous wheel 401 is arranged in parallel. Through setting up fourth spacing face 1031, on the one hand can reduce synchronous pulley drive's noise, on the other hand can realize the location installation of first installing support 602 fast, reduces adjustment time. Alternatively, the fourth limit surface 1031 may also be formed by a boss provided on the base 100.
In one embodiment, as shown in fig. 8, to avoid the second synchronizing wheel 401 moving relative to the first bearing seat 200, a first shaft sleeve 402 is disposed between the second synchronizing wheel 401 and the first bearing seat 200, the first shaft sleeve 402 is sleeved on the first screw rod 400, one end of the first shaft sleeve 402 is abutted to the first bearing seat 200, and the other end of the first shaft sleeve 402 is abutted to the second synchronizing wheel 401, so that the intervals between the first shaft sleeve 402 and the first bearing 201, and between the first bearing 201 and the first screw rod 400 are all 0, and the vertical movement of the first screw rod 400 is avoided, thereby affecting the accuracy.
In one embodiment, as shown in fig. 10, a moving bracket 1042 is provided on the first slider 1041, a yielding groove 105 consistent with the moving direction of the first slider 1041 is provided on the base 100, a portion of the moving bracket 1042 passes through the base 100 to the other side of the base 100 through the yielding groove 105, and a first mounting position 10421 is provided on a portion of the moving bracket 1042 passing through the base 100 for mounting components. Specifically, in this embodiment, the moving support 1042 has a symmetrical structure, two symmetrically distributed strip-shaped grooves 105 are provided on the base 100 for the part of the moving support 1042 to pass through, the first mounting position 10421 of the moving support 1042 is mainly a plurality of fixing holes, and external components can be fixed on the moving support 1042 through the fixing holes, so that the moving support 1042 drives the connected components to reciprocate in the axial direction of the first screw rod 400.
In one embodiment, to further reduce noise, the first screw 400 is preferably a ball screw, which improves transmission accuracy, converts friction transmission of a conventional T-shaped screw into rolling friction, and further reduces transmission resistance, thereby reducing noise generated during transmission.
The foregoing is merely a preferred embodiment of the utility model, and it should be noted that modifications and enhancements can be made by those skilled in the art without departing from the principles of the present utility model. Such modifications and variations are also considered to be a departure from the scope of the utility model.
Claims (10)
1. A low noise lead screw nut drive mechanism comprising:
A base (100);
A first bearing seat (200) in which a first bearing (201) is arranged, wherein the first bearing seat (200) is arranged on the base (100);
A second bearing seat (300) in which a second bearing (301) is arranged, the second bearing seat (300) being arranged on the base (100);
A first screw (400) having a fixed end and an input end, the input end of the first screw (400) passing through the first bearing (201) and being fixed, the fixed end of the first screw (400) passing through the second bearing (301) and being fixed;
The first nut (500) is arranged on the first screw rod (400), and the first nut (500) can do translational motion along the axial direction of the first screw rod (400); and
The first limiting structure (101) is arranged on the base (100), the first limiting structure (101) comprises a first limiting surface (1011) and a second limiting surface (1012) which are matched with the shape of the first bearing seat (200), and the first bearing seat (200) is respectively abutted to the first limiting surface (1011) and the second limiting surface (1012).
2. The low-noise screw nut transmission mechanism according to claim 1, further comprising a first guide rail (104) disposed on the base (100), wherein an adaptive first slider (1041) is disposed on the first guide rail (104), the first slider (1041) is connected with the first nut (500), a third limiting surface (102) adapted to the shape of the first guide rail (104) is disposed on the base (100), and one side of the first guide rail (104) is abutted to the third limiting surface (102).
3. The screw-nut transmission mechanism with low noise according to claim 2, wherein the first slider (1041) is provided with a moving bracket (1042), the moving bracket (1042) is provided with a nut bracket (501), the first nut (500) is disposed on the nut bracket (501), and the first nut (500) and the nut bracket (501) are provided with a buffer structure in the axial direction of the first screw (400).
4. A low noise screw nut driving mechanism according to claim 3, characterized in that the nut bracket (501) comprises a bracket body (5011) and a fixing piece (5012), and a preset gap (503) is provided between the first nut (500) and the fixing piece (5012) to form the buffer structure.
5. The screw-nut transmission mechanism with low noise according to claim 1, further comprising a first motor (600) disposed on the base (100), wherein a first synchronizing wheel (601) is disposed at an output end of the first motor (600), a second synchronizing wheel (401) is disposed at an input end of the first screw (400), and the first synchronizing wheel (601) and the second synchronizing wheel (401) are connected through a first synchronizing belt (603).
6. The low-noise screw nut transmission mechanism according to claim 5, wherein a first mounting bracket (602) is disposed on the base (100), the first motor (600) is disposed on the first mounting bracket (602), a fourth limiting surface (1031) is disposed on the base (100), and when the first mounting bracket (602) abuts against the fourth limiting surface (1031), a plane where the first synchronous belt (603) is located is perpendicular to an axis of the first screw (400).
7. The low noise spindle nut transmission mechanism according to claim 6, wherein a side wall of the base (100) is provided with a first notch (103) for forming the fourth limit surface (1031), and the first mounting bracket (602) is fixed on the first notch (103) and abuts against the fourth limit surface (1031).
8. The low-noise screw nut transmission mechanism according to claim 5, wherein a first shaft sleeve (402) is provided between the first bearing housing (200) and the second synchronizing wheel (401), one end of the first shaft sleeve (402) is abutted to the first bearing housing (200), and the other end of the first shaft sleeve (402) is abutted to the second synchronizing wheel (401).
9. A low noise screw nut transmission according to claim 3, characterized in that the base (100) is provided with a relief groove (105) corresponding to the moving direction of the first slider (1041), the moving bracket (1042) partially passes through the base (100) through the relief groove (105), wherein the portion of the moving bracket (1042) passing through the base (100) is provided with a first mounting position (10421).
10. A low noise spindle nut transmission according to any one of claims 1-9, characterized in that said first spindle (400) is a ball screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323435637.7U CN221170626U (en) | 2023-12-15 | 2023-12-15 | Low-noise screw-nut transmission mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323435637.7U CN221170626U (en) | 2023-12-15 | 2023-12-15 | Low-noise screw-nut transmission mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221170626U true CN221170626U (en) | 2024-06-18 |
Family
ID=91537082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323435637.7U Active CN221170626U (en) | 2023-12-15 | 2023-12-15 | Low-noise screw-nut transmission mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221170626U (en) |
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2023
- 2023-12-15 CN CN202323435637.7U patent/CN221170626U/en active Active
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