Driving mechanism of servo motor

Abstract

The utility model discloses a driving mechanism of a servo motor. The driving mechanism comprises a servo motor stator ring, a servo motor rotor ring and a heat radiation assembly. The inner arc surface of the servo motor stator ring is provided with a reel, the surface of the reel which is annularly distributed is wound with a coil, and the input end of the coil is electrically connected to the output end of the servo motor controller; the servo motor rotor ring is located in the servo motor stator ring, permanent magnet plates are arranged on the outer arc surface of the servo motor rotor ring, a driving shaft is arranged in the middle of the servo motor rotor ring, and bearings are arranged at the front end and the rear end of the outer arc surface of the driving shaft; according to the driving mechanism of the servo motor, the bearing position and the stator ring position of the driving mechanism of the servo motor are subjected to fixed-point heat dissipation, the influence of high temperature on the magnetic field intensity and resistivity of the driving mechanism of the servo motor is reduced, the output power and efficiency of the driving mechanism of the servo motor are ensured, and the influence of high temperature on mechanical parts is reduced; and the precision and the stability of the servo motor driving mechanism are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of servo motors, in particular to a driving mechanism of a servo motor. Background Art

[0002] A servo motor is an electric drive device used to control the position and speed of mechanical equipment. A servo motor is a closed-loop control system composed of a motor and a control system. The functions of a servo motor can be summarized as position control, speed control, and torque control. The main function of a servo motor is position control. Through the adjustment of the control system, the servo motor can accurately reach a specific position. It has high precision and high repeatability, and can meet the requirements of various mechanical equipment for position accuracy. In the prior art, the driving mechanism of a servo motor is the same as that of an ordinary motor. Both of them drive the drive shaft of the servo motor to rotate through the relative rotation of the rotor and the stator. At the same time, in order to ensure the stability of the rotation of the drive shaft, bearings are also installed at both ends of the drive shaft. During the operation of the servo motor drive mechanism, although there are external heat dissipation components to dissipate the heat inside the servo motor, the heat dissipation position is not accurate enough. The heat generated by friction in the bearing part of the drive mechanism and the heat generated by power consumption in the stator part cannot be discharged in time, which easily affects the output power and stability of the drive mechanism. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a servo motor drive mechanism, which performs fixed-point heat dissipation on the bearing position and stator ring position of the servo motor drive mechanism, reduces the influence of high temperature on the magnetic field strength and resistivity of the servo motor drive mechanism, ensures the output power and efficiency of the servo motor drive mechanism, reduces the influence of high temperature on mechanical parts, ensures the accuracy and stability of the servo motor drive mechanism, and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a driving mechanism of a servo motor, comprising a servo motor stator ring, a servo motor rotor ring and a heat dissipation component;

[0005] Servo motor stator ring: its inner arc surface is respectively provided with a winding frame, and the surface of the ring-shaped winding frame is wound with a coil, and the input end of the coil is electrically connected to the output end of the servo motor controller;

[0006] Servo motor rotor ring: It is located inside the servo motor stator ring. The outer arc surface of the servo motor rotor ring is respectively provided with permanent magnet plates. The middle part of the servo motor rotor ring is provided with a drive shaft. The outer arc surface of the drive shaft is provided with bearings at both ends.

[0007] Heat dissipation component: It is respectively arranged on the outer arc surface of the bearing and the outer arc surface of the servo motor stator ring, and performs fixed-point heat dissipation on the bearing position and stator ring position of the servo motor drive mechanism, accurately and quickly dissipates the heat generated by the servo motor drive mechanism, reduces the influence of high temperature on the magnetic field strength and resistivity of the servo motor drive mechanism, ensures the output power and efficiency of the servo motor drive mechanism, reduces the influence of high temperature on mechanical parts, and ensures the accuracy and stability of the servo motor drive mechanism.

[0008] Furthermore, the heat dissipation component includes a shell, a liquid inlet pipe and a liquid outlet pipe. The shell is respectively arranged on the outer ring surface of the bearing and the outer arc surface of the stator ring of the servo motor. The liquid inlet of the outer arc surface of the shell is provided with a liquid inlet pipe, and the liquid outlet of the outer arc surface of the shell is provided with a liquid outlet pipe to dissipate heat to the designated parts of the driving mechanism.

[0009] Furthermore, the heat dissipation assembly also includes baffles, which are respectively arranged on the inner arc surface of the shell, the outer ring of the bearing and the stator ring of the servo motor are fixedly connected to the adjacent baffles, and the liquid inlet pipe and the liquid outlet pipe are respectively located on the upper and lower sides of the baffle, so as to limit the flow trajectory of the coolant inside the shell.

[0010] Furthermore, the heat dissipation assembly also includes a threaded connecting pipe, which is respectively arranged at the end of the liquid inlet pipe and the liquid outlet pipe to facilitate the connection of the liquid inlet pipe and the liquid outlet pipe with the external pipeline.

[0011] Furthermore, the heat dissipation component also includes heat sinks, which are respectively arranged on the outer arc surface of the shell on the surface of the servo motor stator ring to increase the heat dissipation area and accelerate the heat dissipation speed.

[0012] Furthermore, rectangular connecting blocks are provided at both the front and rear ends of the driving shaft to facilitate the connection between the driving shaft and the driven component.

[0013] Furthermore, the bearings are all ball bearings, which provide stable rotation support for the drive shaft.

[0014] Compared with the prior art, the beneficial effects of the utility model are: the driving mechanism of the servo motor has the following advantages:

[0015] When in use, the whole device is installed inside the shell of the servo motor, and the servo motor controller transmits current to the coil to generate an electromagnetic field. Under the action of the magnetic field, the permanent magnet plate drives the servo motor rotor ring and the drive shaft to rotate, driving the servo motor to work, and the bearings are used to provide rotation support for the front and rear ends of the drive shaft, so that the rotation of the drive shaft is more stable. At the same time, the external coolant enters the inside of the shell through the liquid inlet pipe. Under the obstruction of the baffle, the coolant flows along the inside of the shell for a circle and then flows out from the liquid outlet pipe, and the bearing position and stator ring position of the servo motor drive mechanism are fixed-point heat dissipated, the heat generated by the servo motor drive mechanism is accurately and quickly dissipated, the influence of high temperature on the magnetic field strength and resistivity of the servo motor drive mechanism is reduced, the output power and efficiency of the servo motor drive mechanism are guaranteed, the influence of high temperature on mechanical parts is reduced, and the accuracy and stability of the servo motor drive mechanism are guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic structural diagram of a side cross-section of the overall device of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the heat dissipation component of the utility model in front view;

[0019] Figure 4 It is a schematic structural diagram of the cross section of the heat dissipation component of the utility model.

[0020] In the figure: 1 servo motor stator ring, 2 winding frame, 3 coil, 4 servo motor rotor ring, 5 permanent magnet plate, 6 drive shaft, 7 bearing, 8 heat dissipation component, 81 casing, 82 baffle, 83 liquid inlet pipe, 84 liquid outlet pipe, 85 threaded connecting pipe, 86 heat sink, 9 rectangular connecting block. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 , This embodiment provides a technical solution: a driving mechanism of a servo motor, including a servo motor stator ring 1, a servo motor rotor ring 4 and a heat dissipation component 8;

[0023] Servo motor stator ring 1: its inner arc surface is respectively provided with winding frames 2, and the surface of the ring-shaped winding frames 2 is wound with coils 3, the input end of the coil 3 is electrically connected to the output end of the servo motor controller, and the servo motor controller transmits current to the coil 3 to generate an electromagnetic field;

[0024] Servo motor rotor ring 4: It is located inside the servo motor stator ring 1. The outer arc surface of the servo motor rotor ring 4 is respectively provided with permanent magnet plates 5. The middle part of the servo motor rotor ring 4 is provided with a driving shaft 6. Under the action of the magnetic field, the permanent magnet plate 5 drives the servo motor rotor ring 4 and the driving shaft 6 to rotate, driving the servo motor to work. The outer arc surface of the driving shaft 6 is provided with bearings 7 at both ends to provide rotation support for the front and rear ends of the driving shaft 6. The front and rear ends of the driving shaft 6 are provided with rectangular connecting blocks 9 to facilitate the connection between the driving shaft 6 and the external driven components. The bearings 7 are all ball bearings, which provide higher precision rotation support for the driving shaft 6, so that the rotation of the driving shaft 6 is more stable.

[0025] Heat dissipation component 8: respectively arranged on the outer arc surface of the bearing 7 and the outer arc surface of the servo motor stator ring 1, the heat dissipation component 8 includes a casing 81, a liquid inlet pipe 83 and a liquid outlet pipe 84, the casing 81 is respectively arranged on the outer ring surface of the bearing 7 and the outer arc surface of the servo motor stator ring 1, the liquid inlet of the outer arc surface of the casing 81 is provided with a liquid inlet pipe 83, and the liquid outlet of the outer arc surface of the casing 81 is provided with a liquid outlet pipe 84, the heat dissipation component 8 also includes a baffle 82, the baffle 82 is respectively arranged on the inner arc surface of the casing 81, the outer ring of the bearing 7 and the servo motor stator ring 1 are fixedly connected to the adjacent baffle 82, the liquid inlet pipe 83 and the liquid outlet pipe 84 are respectively located on the upper and lower sides of the baffle 82, The external coolant enters the casing 81 through the liquid inlet pipe 83. Under the obstruction of the baffle 82, the coolant flows along the inside of the casing 81 for a circle and then flows out from the liquid outlet pipe 84, accurately absorbing the heat of the bearing 7 and the servo motor stator ring 1. The heat dissipation component 8 also includes a threaded connecting pipe 85, which is respectively arranged at the end of the liquid inlet pipe 83 and the liquid outlet pipe 84 to facilitate the connection of the liquid inlet pipe 83 and the liquid outlet pipe 84 with the external pipeline. The heat dissipation component 8 also includes a heat sink 86, which is respectively arranged on the outer arc surface of the casing 81 on the surface of the servo motor stator ring 1 to increase the heat dissipation area and accelerate the heat dissipation speed of the servo motor stator ring 1.

[0026] The working principle of a servo motor driving mechanism provided by the utility model is as follows: when in use, the overall device is installed inside the housing of the servo motor, and the servo motor controller transmits current to the coil 3 to generate an electromagnetic field. Under the action of the magnetic field, the permanent magnet plate 5 drives the servo motor rotor ring 4 and the drive shaft 6 to rotate, driving the servo motor to work. During the rotation of the drive shaft 6, the bearing 7 is used to provide rotation support for the front and rear ends of the drive shaft 6, so that the rotation of the drive shaft 6 is more stable. At the same time, the external coolant enters the inside of the casing 81 through the liquid inlet pipe 83. Under the obstruction of the baffle 82, the coolant flows along the inside of the casing 81 for a circle and then flows out from the liquid outlet pipe 84, accurately absorbing the heat of the bearing 7 and the servo motor stator ring 1, reducing the influence of high temperature on the magnetic field strength and resistivity of the servo motor, ensuring the output power and efficiency of the servo motor driving mechanism, reducing the deformation and dimensional changes of mechanical parts due to high temperature, and ensuring the accuracy and stability of the driving mechanism.

[0027] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A driving mechanism of a servo motor, characterized in that: It comprises a servo motor stator ring (1), a servo motor rotor ring (4) and a heat dissipation component (8); A servo motor stator ring (1): the inner arc surface of which is respectively provided with a winding frame (2), the surface of the winding frame (2) distributed in an annular manner is wound with a coil (3), and the input end of the coil (3) is electrically connected to the output end of the servo motor controller; A servo motor rotor ring (4): the servo motor rotor ring (4) is located inside the servo motor stator ring (1), the outer arc surface of the servo motor rotor ring (4) is respectively provided with a permanent magnet plate (5), the middle part of the servo motor rotor ring (4) is provided with a drive shaft (6), and the outer arc surface of the drive shaft (6) is provided with bearings (7) at both ends. Heat dissipation component (8): respectively arranged on the outer arc surface of the bearing (7) and the outer arc surface of the servo motor stator ring (1).

2. A servo motor driving mechanism according to claim 1, characterized in that: The heat dissipation assembly (8) comprises a casing (81), a liquid inlet pipe (83) and a liquid outlet pipe (84); the casing (81) is respectively arranged on the outer ring surface of the bearing (7) and the outer arc surface of the servo motor stator ring (1); the liquid inlet of the outer arc surface of the casing (81) is provided with a liquid inlet pipe (83); and the liquid outlet of the outer arc surface of the casing (81) is provided with a liquid outlet pipe (84).

3. A servo motor driving mechanism according to claim 2, characterized in that: The heat dissipation assembly (8) further comprises baffles (82), wherein the baffles (82) are respectively arranged on the inner arc surface of the casing (81), the outer ring of the bearing (7) and the stator ring (1) of the servo motor are both fixedly connected to the adjacent baffles (82), and the liquid inlet pipe (83) and the liquid outlet pipe (84) are respectively located on the upper and lower sides of the baffles (82).

4. A servo motor driving mechanism according to claim 2, characterized in that: The heat dissipation assembly (8) further comprises a threaded connection pipe (85), wherein the threaded connection pipe (85) is respectively arranged at the end of the liquid inlet pipe (83) and the liquid outlet pipe (84).

5. A servo motor driving mechanism according to claim 2, characterized in that: The heat dissipation assembly (8) further comprises heat dissipation fins (86), and the heat dissipation fins (86) are respectively arranged on the outer arc surface of the casing (81) on the surface of the servo motor stator ring (1).

6. A servo motor driving mechanism according to claim 1, characterized in that: Rectangular connecting blocks (9) are provided at both the front and rear ends of the driving shaft (6).

7. The driving mechanism of a servo motor according to claim 1, characterized in that: The bearings (7) are all ball bearings.

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