Ball screw transmission damping device

Abstract

The utility model discloses a ball screw transmission damping device, relates to the technical field of damping devices, and aims to solve the problems that in the prior art, a ball nut cannot linearly and horizontally move along a ball screw, and accuracy and stability of ball screw transmission are affected. A ball screw is arranged above the mounting bottom plate, first fixing plates are symmetrically and rotationally mounted at the two ends of the ball screw correspondingly, the first fixing plates are fixedly connected with the mounting bottom plate through screws, a sliding block is slidably mounted on the outer side of the ball screw through a ball nut, and a guide plate is fixedly mounted below the sliding block; a limiting strip box is arranged below the guide plate, the limiting strip box is fixedly connected with the mounting bottom plate through screws, a notch is formed in the upper end face of the limiting strip box, the lower end of the guide plate penetrates into the limiting strip box through the notch, and the width of the guide plate is matched with the width of the notch.

Description

Technical Field

[0001] The utility model relates to the technical field of damping devices, in particular to a ball screw drive damping device. Background Technique

[0002] In mechanical equipment, the ball screw is one of the most commonly used transmission components. It mainly converts rotational motion into linear motion, or converts torque into axial repetitive force. At the same time, it has the characteristics of high precision, reversibility and high efficiency. The ball screw has very small frictional resistance and is widely used in various industrial equipment and precision instruments. In order to reduce the vibration of the ball screw during use, a damping device is required;

[0003] For example, the authorized patent with the publication number of CN201599375U (a ball screw drive damping device): includes a linear guide rail, a guide rail slider, a ball nut and a ball screw pair arranged on the linear guide rail. The guide rail slider is slidably connected to the linear guide rail, the ball nut is fixed on the guide rail slider, a threaded hole is provided in the center of the ball nut, and the ball screw pair passes through the threaded hole. An elastic damping device is further provided between the guide rail slider and the ball nut;

[0004] Although the above-mentioned prior art can prevent the shock force received by the ball screw from jumping from being transmitted to the guide rail slider of the guide rail, it lacks a guiding mechanism. When the spring piece performs elastic damping, the bending deformation of the spring piece easily causes the ball nut to rotate, resulting in the ball nut being unable to move linearly and horizontally along the ball screw, affecting the accuracy and stability of the ball screw drive. Therefore, there is an urgent need in the market to develop a ball screw drive damping device to help people solve existing problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a ball screw drive damping device to solve the problem that the ball nut cannot move linearly and horizontally along the ball screw, affecting the accuracy and stability of the ball screw drive, as mentioned in the above background technique.

[0006] To achieve the above object, the present utility model provides the following technical solution: A ball screw drive shock absorption device, including a mounting base plate, above which a ball screw is provided. Both ends of the ball screw are symmetrically and rotatably installed with a first fixing plate respectively. The first fixing plate and the mounting base plate are fixedly connected by screws. A sliding block is slidably installed on the outer side of the ball screw through a ball nut. A guide plate is fixedly installed below the sliding block. Below the guide plate, a limit strip box is provided. The limit strip box and the mounting base plate are fixedly connected by screws. A notch is provided on the upper end surface of the limit strip box. The lower end of the guide plate penetrates into the interior of the limit strip box through the notch. The width of the guide plate matches the width of the notch. Inside the limit strip box, a limiting base plate is provided along the lower side of the guide plate. The limiting base plate is fixedly connected with the guide plate. On both sides above the limiting base plate, a first rubber block is symmetrically provided respectively. On both sides below the limiting base plate, a second rubber block is symmetrically provided respectively. Both the first rubber block and the second rubber block are adhesively connected to the limit strip box.

[0007] Preferably, buffer components are provided on the outer sides of both of the first fixing plates. The buffer components include a buffer plate, a transmission column, a transmission cylinder, a compression spring and a fixing plate. The fixing plate and the mounting base plate are fixedly connected by screws.

[0008] Preferably, the buffer plate is arranged inside the first fixing plate. A first slot hole is provided inside the buffer plate. Four transmission columns and four transmission cylinders are provided. The transmission column is arranged on one side of the transmission cylinder. One end of the transmission column penetrates through the first fixing plate and is fixedly connected with the buffer plate.

[0009] Preferably, the compression spring is arranged on the outer side of the transmission cylinder. An outer ring plate is fixedly installed on the outer side of the transmission cylinder. One end of the compression spring is fixedly connected with the fixing plate. The other end of the compression spring is fixedly connected with the outer ring plate.

[0010] Preferably, a second slot hole is provided inside the fixing plate. A damping rod is provided inside the compression spring. One end of the damping rod is fixedly connected with the transmission cylinder, and the other end of the damping rod is fixedly connected with the fixing plate.

[0011] Preferably, a column cavity is provided inside the transmission cylinder. One end of the transmission column extends into the interior of the column cavity. A fixing screw is threadedly installed on the outer side of the transmission cylinder. A bottom groove is provided inside the transmission cylinder along the lower side of the column cavity. A bottom block is provided inside the bottom groove. The bottom block is fixedly connected with the transmission column.

[0012] Preferably, a second fixing plate is fixedly installed on one side above the mounting base plate. A drive box is fixedly installed on one side of the second fixing plate.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] 1. The utility model provides a limit bar box under the ball screw, and the guide plate under the sliding block installed by the ball nut on the outside of the ball screw passes through the limit bar box. By matching the width of the guide plate with the width of the slot, the limit bar box can guide the movement of the guide plate, and then guide the movement of the sliding block, so that the sliding block will not rotate, which is beneficial to the accuracy and stability of the ball screw transmission. In addition, by providing a limit bottom plate, rubber block 1 and rubber block 2 inside the limit bar box, the viscosity of the rubber itself can produce a viscosity effect when subjected to force, so that the vertical vibration of the ball screw during operation can be buffered, thereby realizing the transmission shock absorption ability of the ball screw and increasing practicality.

[0015] 2. The utility model forms a protective structure at both ends of the ball screw by setting two buffer components. The compression spring can buffer the force acting on the buffer plate. Then, when a problem occurs in the ball screw transmission and the sliding block exceeds the maximum moving distance, the buffer component can buffer and block the sliding block to prevent the sliding block from colliding with the fixed plate, which is beneficial to the service life of the ball screw.

[0016] 3. The utility model extends one end of the transmission column into the transmission cylinder, and the transmission column and the transmission cylinder are connected by a fixed screw, so that the extension distance of the transmission column can be changed by loosening the fixed screw, thereby realizing the position adjustment capability of the buffer plate and increasing the flexibility of the use of the buffer assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of a ball screw transmission shock absorbing device of the present invention;

[0018] Figure 2 This is a schematic structural diagram of the buffer assembly of the present utility model;

[0019] Figure 3 It is a cross-sectional view of the transmission cylinder of the present utility model;

[0020] Figure 4 It is a side sectional view of the limit bar box of the utility model.

[0021] In the figure: 1. Installation base plate; 2. First fixed plate; 3. Ball screw; 4. Second fixed plate; 5. Sliding block; 6. Limit strip box; 601. Notch; 7. Drive box; 8. Buffer assembly; 801. Buffer plate; 8011. First slot hole; 802. Transmission column; 803. Transmission cylinder; 8031. Column cavity; 8032. Bottom groove; 804. Compression spring; 805. Fixed plate; 8051. Second slot hole; 9. Damping rod; 10. Fixed screw; 11. Outer ring plate; 12. Bottom block; 13. Guide plate; 14. Restriction base plate; 15. First rubber block; 16. Second rubber block. Detailed implementation mode

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0023] Please refer to Figures 1-4 , an embodiment provided by the present utility model: a ball screw drive shock absorption device, including an installation base plate 1, a ball screw 3 is arranged above the installation base plate 1, both ends of the ball screw 3 are symmetrically and rotatably installed with a first fixed plate 2, the first fixed plate 2 and the installation base plate 1 are fixedly connected by screws, a sliding block 5 is slidably installed on the outer side of the ball screw 3 through a ball nut, a guide plate 13 is fixedly installed below the sliding block 5, a limit strip box 6 is arranged below the guide plate 13, the limit strip box 6 and the installation base plate 1 are fixedly connected by screws, a notch 601 is arranged on the upper end surface of the limit strip box 6, the lower end of the guide plate 13 penetrates into the inside of the limit strip box 6 through the notch 601, the width of the guide plate 13 and the width dimension of the notch 601 match, a restriction base plate 14 is arranged inside the limit strip box 6 along the lower side of the guide plate 13, the restriction base plate 14 is fixedly connected with the guide plate 13, the first rubber blocks 15 are symmetrically arranged on both sides above the restriction base plate 14, the second rubber blocks 16 are symmetrically arranged on both sides below the restriction base plate 14, and both the first rubber blocks 15 and the second rubber blocks 16 are adhesively connected with the limit strip box 6. Due to the adhesive characteristics of the first rubber blocks 15 and the second rubber blocks 16 themselves, a viscous effect can be generated when stressed, so that the vertical vibration during the operation of the ball screw can be buffered, and the drive shock absorption ability of the ball screw is realized.

[0024] During use, by driving the ball screw 3 to rotate, the sliding block 5 is driven to move for transmission. Since the width of the guide plate 13 and the width dimension of the notch 601 match, the limit strip box 6 can guide the movement of the guide plate 13, and further guide the movement of the sliding block 5, so that the sliding block 5 will not rotate, which is beneficial to the accuracy and stability of the ball screw drive.

[0025] Furthermore, buffer components 8 are arranged on the outer sides of both fixing plates 2. The buffer component 8 includes a buffer plate 801, a transmission column 802, a transmission cylinder 803, a compression spring 804, and a fixing plate 805. The fixing plate 805 and the mounting base plate 1 are fixedly connected by screws. The screw mounting method is conducive to the disassembly and assembly of the fixing plate 805.

[0026] Furthermore, the buffer plate 801 is arranged on the inner side of the first fixing plate 2. A rubber pad is bonded to the inner side of the buffer plate 801. A first slot 8011 is arranged inside the buffer plate 801. Both the transmission column 802 and the transmission cylinder 803 are provided with four, which can increase the stress points and improve the buffering ability of the buffer component 8. The transmission column 802 is arranged on one side of the transmission cylinder 803. One end of the transmission column 802 penetrates through the first fixing plate 2 and is fixedly connected to the buffer plate 801. A through hole is arranged inside the first fixing plate 2 along the outer side of the transmission column 802, enabling the transmission column 802 to slide.

[0027] Furthermore, the compression spring 804 is arranged on the outer side of the transmission cylinder 803. An outer ring plate 11 is fixedly installed on the outer side of the transmission cylinder 803. One end of the compression spring 804 is fixedly connected to the fixing plate 805, and the other end of the compression spring 804 is fixedly connected to the outer ring plate 11. By arranging the compression spring 804, the acting force received by the buffer plate 801 can be buffered. Furthermore, after the sliding block 5 exceeds the maximum moving distance in the case of ball screw drive, the buffer component 8 arranged can buffer and block the sliding block 5, preventing the sliding block 5 from colliding with the first fixing plate 2, which is beneficial to the service life of the ball screw. A second slot 8051 is arranged inside the fixing plate 805. A damping rod 9 is arranged inside the compression spring 804. One end of the damping rod 9 is fixedly connected to the transmission cylinder 803, and the other end of the damping rod 9 is fixedly connected to the fixing plate 805. By arranging the damping rod 9, the rebound acting force generated by the compression spring 804 during the buffering process can be buffered and absorbed, increasing the stability of the buffering work of the buffer component 8.

[0028] Furthermore, a column cavity 8031 is arranged inside the transmission cylinder 803. One end of the transmission column 802 extends into the inside of the column cavity 8031. A fixing screw 10 is threadedly installed on the outer side of the transmission cylinder 803. The screw end of the fixing screw 10 extends into the inside of the column cavity 8031 and contacts the transmission column 802, which can fix the position of the transmission column 802. A bottom groove 8032 is arranged inside the transmission cylinder 803 along the lower side of the column cavity 8031. A bottom block 12 is arranged inside the bottom groove 8032. The bottom block 12 is fixedly connected to the transmission column 802, so that by loosening the fixing screw 10, the extending distance of the transmission column 802 can be changed, and thus the position adjustment ability of the buffer plate 801 is realized, increasing the flexibility of the use of the buffer component 8.

[0029] Furthermore, a fixing plate 2 4 is fixedly installed on one side above the mounting base 1, and a driving box 7 is fixedly installed on one side of the fixing plate 2 4. A transmission shaft fixedly connected to the ball screw 3 is provided between the fixing plate 2 4 and the fixing plate 1 2, and a driving motor of the transmission shaft is provided in the driving box 7, which facilitates driving the ball screw 3 to rotate and increases practicality.

[0030] Working principle: When in use, the ball screw 3 is driven to rotate, and the sliding block 5 is driven to move for transmission. By matching the width of the guide plate 13 with the width of the slot 601, the limit bar 6 can guide the movement of the guide plate 13, and then guide the movement of the sliding block 5, so that the sliding block 5 will not rotate, which is beneficial to the accuracy and stability of the ball screw transmission. In addition, through the setting of the limiting bottom plate 14, rubber block 15 and rubber block 2 16, the viscosity of the rubber itself can produce a viscous effect when subjected to force, so that the vertical vibration of the ball screw during operation can be buffered, thereby realizing the transmission shock absorption ability of the ball screw.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A shock-absorbing device for ball screw drive, comprising a mounting base plate (1), characterized in that: Above the installation base plate (1), a ball screw (3) is provided. At both ends of the ball screw (3), fixing plates one (2) are symmetrically and rotatably installed. The fixing plates one (2) are fixedly connected to the installation base plate (1) by screws. A sliding block (5) is slidably installed on the outer side of the ball screw (3) through a ball nut. A guide plate (13) is fixedly installed below the sliding block (5). Below the guide plate (13), a limit strip box (6) is provided. The limit strip box (6) is fixedly connected to the installation base plate (1) by screws. A notch (601) is provided on the upper end face of the limit strip box (6). The lower end of the guide plate (13) passes through the notch (601) and enters the inside of the limit strip box (6). The width of the guide plate (13) matches the width of the notch (601). Inside the limit strip box (6), a limiting base plate (14) is provided along the lower side of the guide plate (13). The limiting base plate (14) is fixedly connected to the guide plate (13). On both sides above the limiting base plate (14), rubber blocks one (15) are symmetrically provided. On both sides below the limiting base plate (14), rubber blocks two (16) are symmetrically provided. Both the rubber block one (15) and the rubber block two (16) are adhesively connected to the limit strip box (6).

2. The shock-absorbing device for ball screw drive according to claim 1, wherein: On the outer sides of both fixing plates one (2), buffer components (8) are provided. The buffer components (8) include buffer plates (801), transmission columns (802), transmission cylinders (803), compression springs (804), and fixing plates (805). The fixing plates (805) are fixedly connected to the installation base plate (1) by screws.

3. The shock-absorbing device for ball screw drive according to claim 2, wherein: The buffer plates (801) are arranged on the inner sides of the fixing plates one (2). A slot one (8011) is provided inside the buffer plates (801). Four transmission columns (802) and four transmission cylinders (803) are provided. The transmission columns (802) are arranged on one side of the transmission cylinders (803). One end of the transmission column (802) penetrates through the fixing plate one (2) and is fixedly connected to the buffer plate (801).

4. A ball screw drive shock absorption device according to claim 3, characterized in that: The compression springs (804) are arranged on the outer sides of the transmission cylinders (803). An outer ring plate (11) is fixedly installed on the outer side of the transmission cylinder (803). One end of the compression spring (804) is fixedly connected to the fixing plate (805), and the other end of the compression spring (804) is fixedly connected to the outer ring plate (11).

5. The shock-absorbing device for ball screw drive according to claim 4, wherein: A slot two (8051) is provided inside the fixing plate (805). A damping rod (9) is provided inside the compression spring (804). One end of the damping rod (9) is fixedly connected to the transmission cylinder (803), and the other end of the damping rod (9) is fixedly connected to the fixing plate (805).

6. The shock-absorbing device for ball screw drive according to claim 5, wherein: The interior of the transmission cylinder (803) is provided with a column cavity (8031), one end of the transmission column (802) extends into the interior of the column cavity (8031), a fixing screw (10) is installed on the outer side of the transmission cylinder (803) by threading, a bottom groove (8032) is arranged below the column cavity (8031) inside the transmission cylinder (803), a bottom block (12) is arranged inside the bottom groove (8032), and the bottom block (12) is fixedly connected with the transmission column (802).

7. A ball screw drive shock absorption device according to claim 1, characterized in that: One side above the mounting base plate (1) is fixedly installed with a second fixing plate (4), and one side of the second fixing plate (4) is fixedly installed with a driving box (7).

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