Accurate positioning servo motor

Abstract

The utility model belongs to servo motor field especially, it is a kind of precision positioning servo motor, it includes buffer pad iron, the top detachably installed of buffer pad iron has connecting steel sheet, the top detachably installed of connecting steel sheet has motor support;The inboard fixed mounting of motor support has rubber buffer pad, the inboard fixed mounting of rubber buffer pad has servo motor.The utility model is provided with brass friction piece and coil spring, when motor generates high frequency vibration, coil spring is telescopic along the axial direction, drives the relative sliding of upper and lower brass friction piece, and vibration energy is consumed by the friction force on the surface of metal, while effectively suppressing high frequency vibration, the cost performance is extremely high, greatly reduces the equipment cost, and simultaneously with polyurethane shock pad and buffer pad iron cooperation, better realizes vibration suppression, ensures the positioning accuracy and stability of servo motor.

Description

Technical Field

[0001] This utility model relates to the field of servo motor technology, and in particular to a precision positioning servo motor. Background Technology

[0002] A servo motor is a drive device that can precisely control position, speed, and torque, and belongs to a closed-loop control system. It consists of the motor body, a servo driver, and a position sensor. The driver receives commands, compares them with the actual state fed back by the sensor, and adjusts the output to achieve high-precision positioning. It is widely used in industrial automation, robotics, and other fields.

[0003] However, existing servo motors generate mechanical vibrations during operation. High-frequency vibrations can disrupt encoder pulse signals, causing position feedback errors. Vibration can also induce resonance in the transmission chain, amplifying gear meshing clearances and creating reverse backlash, leading to positioning drift. Furthermore, continuous vibrations accelerate wear on components such as friction dampers and bearings, increasing mechanical clearances and reducing repeatability.

[0004] Therefore, we propose a precision positioning servo motor to solve the above problems. Utility Model Content

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A precision positioning servo motor includes a buffer pad, a connecting steel plate detachably mounted on the top of the buffer pad, and a motor bracket detachably mounted on the top of the connecting steel plate; a rubber buffer pad is fixedly mounted on the inner side of the motor bracket, and a servo motor is fixedly mounted on the inner side of the rubber buffer pad.

[0007] Specifically, aluminum heat sinks are fixedly installed on both sides of the servo motor to facilitate heat dissipation.

[0008] Specifically, two damping pads are fixedly installed on the outer side of the connecting steel plate. The outer sides of the two damping pads abut against the inner wall of the same buffer pad iron, which helps to prevent rigid collision between the buffer pad iron and the connecting steel plate.

[0009] Specifically, a polyurethane buffer block is fixedly installed on the bottom inner wall of the buffer pad, which can absorb the initial impact energy by utilizing the high elasticity of the polyurethane material.

[0010] Specifically, four evenly distributed threaded sleeves are fixedly installed on the bottom inner wall of the buffer pad. Lower brass friction plates are slidably fitted on the outer side of each of the four threaded sleeves. The bottom of the four lower brass friction plates slides in contact with the bottom inner wall of the buffer pad, so as to dissipate vibration energy through friction of the lower brass friction plates.

[0011] Specifically, each of the four threaded sleeves is fitted with a helical spring on its outer side, and the bottom end of each of the four helical springs abuts against the corresponding lower brass friction plate.

[0012] Specifically, four evenly distributed guide sleeves are fixedly installed on the bottom inner wall of the buffer pad. Four helical springs and four lower brass friction plates are respectively located on the inner side of the corresponding guide sleeves, which facilitates the restriction of the compression or extension direction of the helical springs and prevents energy loss or structural jamming caused by lateral bending.

[0013] Specifically, each of the four threaded sleeves has a detachable upper brass friction plate installed at its top. The top of each of the four helical springs abuts against the corresponding upper brass friction plate. The inner sides of each of the four threaded sleeves are threaded with threaded rods. The tops of the four upper brass friction plates abut against the bottom of the connecting steel plate. The four threaded rods slide through the connecting steel plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting brass friction plates and helical springs, when the motor generates high-frequency vibration, the helical springs extend and retract along the axis, causing the upper and lower brass friction plates to slide relative to each other. The vibration energy is consumed by the friction force of the metal surface. While effectively suppressing high-frequency vibration, it has a very high cost performance and greatly reduces the equipment cost. At the same time, in combination with polyurethane damping blocks and buffer pads, it can better achieve vibration suppression and ensure the positioning accuracy and stability of the servo motor. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a precision positioning servo motor proposed in this utility model;

[0016] Figure 2 This is a three-dimensional structural disassembly diagram of a precision positioning servo motor proposed in this utility model;

[0017] Figure 3 This is a three-dimensional structural diagram of a buffer pad, connecting steel plate, and damping pad for a precision positioning servo motor proposed in this utility model.

[0018] Figure 4 This is a three-dimensional structural breakdown diagram of the guide sleeve, threaded rod, and damping pad of a precision positioning servo motor proposed in this utility model.

[0019] Figure 5 This is a three-dimensional structural diagram showing the threaded rod, threaded sleeve, helical spring, upper brass friction plate, and lower brass friction plate of a precision positioning servo motor proposed in this utility model.

[0020] In the diagram: 1. Buffer pad; 2. Connecting steel plate; 3. Motor bracket; 4. Rubber buffer pad; 5. Aluminum heat sink; 6. Servo motor; 7. Damping pad; 8. Polyurethane buffer block; 9. Threaded rod; 10. Guide sleeve; 11. Threaded sleeve; 12. Upper brass friction plate; 13. Lower brass friction plate; 14. Helical spring. Detailed Implementation

[0021] Reference Figure 1-5 A precision positioning servo motor includes a buffer pad 1, a connecting steel plate 2 detachably mounted on the top of the buffer pad 1, and a motor bracket 3 detachably mounted on the top of the connecting steel plate 2; a rubber buffer pad 4 is fixedly mounted on the inner side of the motor bracket 3, and a servo motor 6 is fixedly mounted on the inner side of the rubber buffer pad 4.

[0022] In this embodiment, aluminum heat sinks 5 are fixedly installed on both sides of the servo motor 6 to facilitate heat dissipation of the servo motor 6.

[0023] In this embodiment, two damping pads 7 are fixedly installed on the outer side of the connecting steel plate 2. The outer sides of the two damping pads 7 abut against the inner wall of the same buffer pad 1, which helps to prevent the buffer pad 1 and the connecting steel plate 2 from having a rigid collision.

[0024] In this embodiment, a polyurethane buffer block 8 is fixedly installed on the bottom inner wall of the buffer pad 1, which can absorb the initial impact energy by utilizing the high elasticity of the polyurethane material.

[0025] In this embodiment, four evenly distributed threaded sleeves 11 are fixedly installed on the bottom inner wall of the buffer pad 1. Lower brass friction plates 13 are slidably sleeved on the outer side of each of the four threaded sleeves 11. The bottom of the four lower brass friction plates 13 slides in contact with the bottom inner wall of the buffer pad 1, so as to facilitate the consumption of vibration energy through the friction of the lower brass friction plates 13.

[0026] In this embodiment, a helical spring 14 is fitted on the outer side of each of the four threaded sleeves 11, and the bottom ends of the four helical springs 14 respectively abut against the corresponding lower brass friction plates 13.

[0027] In this embodiment, four evenly distributed guide sleeves 10 are fixedly installed on the bottom inner wall of the buffer pad 1. Four helical springs 14 and four lower brass friction plates 13 are respectively located inside the corresponding guide sleeves 10, which facilitates the restriction of the compression or extension direction of the helical springs 14 and prevents energy loss or structural jamming caused by lateral bending.

[0028] In this embodiment, upper brass friction plates 12 are detachably installed on the top of each of the four threaded sleeves 11, the tops of the four helical springs 14 respectively abut against the corresponding upper brass friction plates 12, threaded rods 9 are threadedly connected to the inner side of each of the four threaded sleeves 11, the tops of the four upper brass friction plates 12 abut against the bottom of the connecting steel plate 2, and the four threaded rods 9 slide through the connecting steel plate 2.

[0029] Working Principle: When the servo motor 6 starts, stops, or vibrates due to external impact, the vibration energy is first transmitted to the connecting steel plate 2 through the motor bracket 3. The vibration first contacts the polyurethane buffer block 8. The axial vibration of the servo motor 6 causes the polyurethane buffer block 8 to undergo elastic deformation. The high elasticity of the polyurethane material absorbs the initial impact energy. At the same time, the damping characteristics of the polyurethane buffer block 8 initially attenuate the vibration, reducing the energy transmitted to subsequent structures and avoiding damage to components such as the helical spring 14 from rigid impacts. When the servo motor 6 experiences lateral vibration, the damping pad 7 between the connecting steel plate 2 and the buffer pad 1 can absorb the vibration while preventing rigid collisions between the connecting steel plate 2 and the buffer pad 1, thereby enhancing the equipment's resistance to lateral vibration. The initial buffering is achieved by the polyurethane buffer block 8. Afterwards, the remaining vibration energy drives multiple helical springs 14 to extend and retract. At the same time, the guide sleeve 10 and the threaded rod 9 cooperate to restrict the movement direction of the helical springs 14, ensuring that the helical springs 14 only extend and retract axially, avoiding energy loss or structural jamming caused by the side bending of the helical springs 14. Furthermore, when the helical springs 14 extend and retract, the upper brass friction plate 12 and the lower brass friction plate 13 slide relative to each other, converting vibration energy into heat energy through metal surface friction, thereby consuming vibration energy. This can greatly reduce the impact of vibration on the servo motor 6 and reduce positioning errors. During long-term operation, the servo motor 6 will expand due to coil heating, which will change the relative position of the transmission components. Therefore, the two aluminum heat sinks 5 can effectively dissipate heat, reduce thermal deformation, and thus ensure positioning accuracy.

[0030] The technological advancement of this invention compared to the prior art is as follows: by using brass friction plates and helical springs 14, when the servo motor 6 generates high-frequency vibration, the helical springs 14 extend and retract axially, causing the upper and lower brass friction plates to slide relative to each other. The vibration energy is consumed by the friction of the metal surfaces, which effectively suppresses high-frequency vibration while providing a high cost-performance ratio and greatly reducing equipment costs. At the same time, in conjunction with the polyurethane buffer block 8 and the buffer pad 1, it better achieves vibration suppression and ensures the positioning accuracy and stability of the servo motor 6.

Claims

1. A precision positioning servo motor, characterized in that, Includes a buffer pad (1), the top of which is detachably mounted with a connecting steel plate (2), and the top of which is detachably mounted with a motor bracket (3); A rubber buffer pad (4) is fixedly installed on the inner side of the motor bracket (3), and a servo motor (6) is fixedly installed on the inner side of the rubber buffer pad (4).

2. The precision positioning servo motor according to claim 1, characterized in that, Aluminum heat sinks (5) are fixedly installed on both sides of the servo motor (6).

3. The precision positioning servo motor according to claim 1, characterized in that, Two damping pads (7) are fixedly installed on the outer side of the connecting steel plate (2), and the outer sides of the two damping pads (7) abut against the inner wall of the same buffer pad iron (1).

4. A precision positioning servo motor according to claim 1, characterized in that, A polyurethane buffer block (8) is fixedly installed on the bottom inner wall of the buffer pad (1).

5. A precision positioning servo motor according to claim 4, characterized in that, Four evenly distributed threaded sleeves (11) are fixedly installed on the bottom inner wall of the buffer pad (1). Lower brass friction plates (13) are slidably sleeved on the outer side of the four threaded sleeves (11). The bottom of the four lower brass friction plates (13) slides in contact with the bottom inner wall of the buffer pad (1).

6. A precision positioning servo motor according to claim 5, characterized in that, Each of the four threaded sleeves (11) is fitted with a helical spring (14), and the bottom of each of the four helical springs (14) abuts against the corresponding lower brass friction plate (13).

7. A precision positioning servo motor according to claim 6, characterized in that, Four evenly distributed guide sleeves (10) are fixedly installed on the bottom inner wall of the buffer pad (1), and four helical springs (14) and four lower brass friction plates (13) are located on the inner side of the corresponding guide sleeves (10).

8. A precision positioning servo motor according to claim 7, characterized in that, Each of the four threaded sleeves (11) has a detachable upper brass friction plate (12) installed on its top end. The top ends of the four helical springs (14) respectively abut against the corresponding upper brass friction plates (12). The inner sides of the four threaded sleeves (11) are all threaded with threaded rods (9). The tops of the four upper brass friction plates (12) abut against the bottom of the connecting steel plate (2). The four threaded rods (9) slide through the connecting steel plate (2).

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