Novel galvanometer motor

Abstract

The invention relates to the technical field of galvanometer motors, in particular to a novel galvanometer motor. The novel galvanometer motor comprises a rotor assembly which comprises a rotating shaft, a magnetic steel piece and a limiting piece, the magnetic steel piece is arranged on the rotating shaft in a sleeving mode, and the rotating shaft is provided with a limiting hole used for allowing the limiting piece to be inserted therein; the stator assembly comprises a front bearing, a rear bearing, a coil and a machine shell, the front bearing and the rear bearing sleeve the two ends of the rotating shaft, and the coil is located in the machine shell; the front cover is arranged at the end, away from the rear bearing, of the machine shell in a sleeving mode and arranged on the front bearing in a covering mode, and the front cover is provided with a limiting groove allowing the rotating shaft to penetrate through and allowing the limiting piece to be contained. The sensing assembly comprises a permanent magnet, an end cover, a Hall part and a control panel, the permanent magnet sleeves one end, far away from the front cover, of the rotating shaft, the end cover sleeves the rotating shaft and is located between the permanent magnet and the casing, one end face of the end cover abuts against and fixes the casing, the Hall part is arranged on the control panel, and the control panel sleeves the rotating shaft and is located between the permanent magnet and the end cover; and the rear cover covers the permanent magnet and is fixed on the end cover.

Description

Technical Field

[0001] The present application relates to the technical field of galvanometer motors, and in particular to a novel galvanometer motor. Background Art

[0002] As a precision drive device, the galvanometer motor is crucial in the fields of optical scanning, laser processing, etc. With the improvement of industrial automation and technological progress, the market requires galvanometer motors to be not only small in size and light in weight, but also stable, reliable and accurate in positioning to meet the needs of high precision and fast response.

[0003] To achieve these goals, existing galvanometer motors are mainly based on rotary motor structures, including two key parts: stator and rotor, which generate rotary motion through electromagnetic interaction. In addition, in order to achieve stable, reliable and precise positioning, a variety of bearing support systems and dedicated sensor groups are usually used. These components together ensure the smoothness and accuracy of the motor operation.

[0004] However, traditional galvanometer motors rely on a large number of parts to complete complex designs. Although performance is optimized, it also leads to larger size and heavier weight. At present, it is still a technical challenge to reduce the number of components while maintaining excellent control performance. In particular, how to ensure stable and reliable operation and accurate positioning of the motor while simplifying the structure has become the focus of research and development. Summary of the invention

[0005] In order to solve or partially solve the problems existing in the above-mentioned related technologies, the present application provides a new galvanometer motor, which can ensure stable, reliable and precise positioning of the motor during operation on the basis of a simplified structure.

[0006] The present application provides a novel galvanometer motor, which adopts the following technical solution: A novel galvanometer motor includes: a rotor assembly, including: a rotating shaft, a magnetic steel piece and a limit piece, wherein the magnetic steel piece is sleeved on the rotating shaft, and a limit hole is provided on the rotating shaft for inserting the limit piece; a stator assembly, including: a front bearing, a rear bearing, a coil and a housing, wherein the front bearing and the rear bearing are sleeved at both ends of the rotating shaft, the coil is located in the housing and is sleeved on the magnetic steel piece in sequence; a front cover is sleeved on one end of the housing away from the rear bearing, and a cover is provided on the front bearing, and a There is a limit groove for the shaft to pass through and for the limit member to be accommodated; the sensor component includes: a permanent magnet, an end cover, a Hall element and a control board, the permanent magnet is sleeved on the end of the shaft away from the front cover, the end cover is sleeved on the shaft, located between the permanent magnet and the casing, and one end face is abutted and fixed to the casing, the Hall element is arranged on the control board, and the control board is sleeved on the shaft, located between the permanent magnet and the end cover; a rear cover, covering the permanent magnet, and fixed on the end cover.

[0007] By adopting the above technical solution, the limiting holes, limiting pieces and limiting grooves on the rotating shaft cooperate with each other and can limit the position deviation of the rotor assembly, thereby ensuring the stability and reliability of the rotor assembly when the motor is running. The design of the front bearing and the rear bearing ensures the flexible rotation of the rotating shaft while increasing the mechanical strength and durability of the entire motor device. In addition, the setting of the permanent magnet and the effective combination of the Hall element and the control board enable the motor to have accurate speed and position feedback capabilities, thereby realizing high-precision drive control. The rear cover and the end cover together constitute a good environment for protecting the permanent magnet and related electronic devices from external interference.

[0008] Optionally, a shoulder is provided on the rotating shaft for dividing the rotating shaft into a first bearing section and a second bearing section with different diameters; wherein, one end of the rear bearing close to the magnetic steel part abuts against the shoulder, and the permanent magnet, the control panel, the end cover and the rear bearing are sequentially sleeved on the first bearing section; the magnetic steel part and the front bearing are sleeved on the second bearing section, and the coil and the housing are sequentially sleeved on the magnetic steel part.

[0009] By adopting the above technical solution, the shoulder arranged on the rotating shaft can effectively locate the position of the rear bearing, and at the same time different components are installed on the first bearing section and the second bearing section with different diameters according to their functional areas, thereby improving assembly efficiency and structural compactness; among them, the permanent magnet, control panel, end cover and rear bearing are reasonably arranged in the first bearing section, while the magnetic steel parts and the front bearing are optimally configured in the second bearing section, thereby further improving the space utilization efficiency and overall stability of the device.

[0010] Optionally, one end of the casing away from the rear bearing is an inner convex edge, and the front cover is sleeved on the inner convex edge.

[0011] By adopting the above technical solution, the design of the front cover can not only protect the front bearing but also fit closely with the inner convex edge on the casing, further improving the compactness and stability of the whole machine, which is conducive to miniaturization without affecting its performance.

[0012] Optionally, the permanent magnet is magnetized by sinusoidal waves.

[0013] By adopting the above technical solution, the permanent magnet adopts a sinusoidal wave magnetization method, which can effectively improve the smoothness and accuracy of the motor during operation, reduce vibration and noise, and improve the overall performance.

[0014] Optionally, the novel galvanometer motor further includes: a fixing piece, and a first fixing hole is provided on the rear cover, the end cover and the control board corresponding to the fixing piece.

[0015] By adopting the above technical solution, the additional fixings can effectively improve the stability of the installation of the back cover, end cover and control board, ensure the accurate positioning of the permanent magnet and related components, and thus improve the overall working stability and reliability of the galvanometer motor.

[0016] Optionally, the Hall element is provided in plurality, all of which are provided on the control board.

[0017] By adopting the above technical solution, multiple Hall elements are evenly arranged on the control board, which can more accurately detect the position change of the rotating shaft, improve the motor control accuracy and response speed, and thus enhance the overall motion control performance.

[0018] Optionally, the back cover is provided with a receiving groove corresponding to the permanent magnet.

[0019] By adopting the above technical solution, the back cover is provided with a receiving groove corresponding to the permanent magnet, which can effectively protect the permanent magnet, prevent it from being damaged by external collision or friction, increase the service life of the permanent magnet, and thus ensure the stability and reliability of the overall operation of the motor.

[0020] Optionally, the rotating shaft is connected to the front bearing and the rear bearing by interference fit.

[0021] By adopting the above technical solution, the interference fit connection between the rotating shaft and the front bearing and the rear bearing can effectively improve the stability and reliability of the motor during operation, reduce the power transmission loss caused by poor fit, and thus improve the overall working performance of the motor.

[0022] Optionally, a second opposite fixing hole is provided on the edge of the end cover.

[0023] By adopting the above technical solution, the second fixing hole can facilitate the fixation of the motor, improve the overall structural stability of the motor, and help improve the operating accuracy of the motor in a working state.

[0024] Optionally, the size of the control panel is smaller than the size of the end cover.

[0025] By adopting the above technical solution, the size of the control board is designed to be smaller than the end cover, so that the control board can be better positioned and installed in a predetermined position. While ensuring electrical performance, it helps to further reduce the overall volume of the motor and improve space utilization.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting a limiting hole on the rotating shaft and inserting a limiting piece, the rotor assembly is effectively positioned, avoiding the addition of additional components, which helps to reduce the overall size and weight of the motor; 2. The Hall element works together with the permanent magnet and the control board to achieve accurate position feedback without adding too much complex structure, thus improving the control accuracy and response speed of the motor; 3. The design of the front cover can not only protect the front bearing but also fit closely with the inner convex edge of the casing, further improving the compactness and stability of the whole machine, which is conducive to miniaturization without affecting its performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the structure of a novel galvanometer motor disclosed in an embodiment of the present application; Figure 2 for Figure 1 A schematic diagram of the fully exploded structure of a new type of galvanometer motor is shown; Figure 3 for Figure 1 A partial structural schematic diagram of a novel galvanometer motor is shown; Figure 4 for Figure 1 A partially exploded schematic diagram of a novel galvanometer motor is shown; Figure 5 for Figure 1 A partially exploded schematic diagram of a novel galvanometer motor is shown; Figure 6 for Figure 1 A partially exploded schematic diagram of a novel galvanometer motor is shown; Figure 7 for Figure 1 A schematic diagram of the back cover structure of a new type of galvanometer motor is shown.

[0028] Description of reference numerals: 10. Rotor assembly; 11. Rotating shaft; 111. Limiting hole; 112. Shoulder; 113. First bearing section; 114. Second bearing section; 12. Magnetic steel part; 13. Limiting part; 20. Stator assembly; 21. Front bearing; 22. Rear bearing; 23. Coil; 24. Casing; 241. Inner convex edge; 30. Front cover; 31. Limiting groove; 40. Sensor assembly; 41. Permanent magnet; 42. End cover; 421. Second fixing hole; 43. Hall element; 44. Control board; 50. Rear cover; 51. First fixing hole; 52. Accommodating groove; 60. Fixing part. DETAILED DESCRIPTION

[0029] The terms used in the following embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to be used as limitations to the present application. As used in the specification and appended claims of the present application, the singular expressions "one", "a kind of", "above", "the" and "this" are intended to also include plural expressions, unless there is a clear indication to the contrary in the context. It should also be understood that the term "and / or" used in the present application refers to and includes any or all possible combinations of one or more listed items.

[0030] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as suggesting or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features, and in the description of the embodiments of the present application, unless otherwise specified, "plurality" means two or more.

[0031] The technical solution of the embodiments of the present application is described in detail below with reference to the accompanying drawings.

[0032] See also Figure 1 and Figure 2 , which is a new type of galvanometer motor disclosed in an embodiment of the present application, includes a rotor assembly 10, a stator assembly 20, a front cover 30, a sensor assembly 40 and a rear cover 50.

[0033] Among them, the rotor assembly 10 includes a rotating shaft 11, a magnetic steel part 12 and a limit part 13. The magnetic steel part 12 is sleeved on the rotating shaft 11 and rotates with the rotating shaft 11. A limit hole 111 is provided on the rotating shaft 11 for inserting the limit part 13. Among them, a limit groove 31 for the rotating shaft 11 to pass through and for accommodating the limit part 13 is provided on the front cover 30, which can ensure that the radial positioning of the rotating shaft 11 is accurate and correct.

[0034] Specifically, the rotating shaft 11 can be solid or hollow, wherein a hollow shaft is preferred to reduce weight. The rotating shaft 11 can be made of high-strength alloy steel material, or can be made of carbon fiber composite material. The magnetic steel part 12 can be made of different types such as neodymium iron boron, samarium cobalt, etc., but in this embodiment, it is not limited. The limiting member 13 is a pin or bolt of a columnar body, which cooperates with the limiting groove 31 to limit the rotation of the rotating shaft 11, ensuring that the structure of the rotating shaft 11 is compact and reliable.

[0035] See also Figure 2 and Figure 3 The stator assembly 20 includes a front bearing 21, a rear bearing 22, a coil 23 and a housing 24. The front bearing 21 and the rear bearing 22 are used to support the rotating shaft 11, and deep groove ball bearings or angular contact ball bearings of the same structure are used to enable smooth operation.

[0036] It is worth mentioning here that the rotating shaft 11 and the front bearing 21 and the rear bearing 22 are connected by interference fit, which can effectively improve the stability and reliability of the motor during operation, reduce the power transmission loss caused by poor fit, and thus improve the overall working performance of the motor.

[0037] See also Figure 4 The coil 23 is wound around the outside of the magnetic steel part 12 and is located inside the housing 24. The coil 23 generates a magnetic field by energizing, and cooperates with the rotation of the shaft 11 to perform cutting motion with the magnetic steel part 12. The coil 23 is wound with copper wire, but silver wire or gold-plated copper wire can also be selected to reduce resistance loss. The housing 24 is used to encapsulate the coil 23 and the magnetic steel part 12, and plays a protective role. The housing 24 is, for example, made of aluminum alloy die-casting or engineering plastic molding.

[0038] See also Figure 2 and Figure 4 The front cover 30 is sleeved on the end of the housing 24 away from the rear bearing 22, and the cover is arranged on the front bearing 21. The front cover 30 is provided with a limiting groove 31 for the rotation shaft 11 to pass through and for the limiting member 13 to accommodate, and can effectively prevent external impurities from entering and affecting normal operation.

[0039] See also Figure 5 The end of the housing 24 away from the rear bearing 22 is an inner convex edge 241 (which can be Figure 2 As shown in FIG. 2 ), the front cover 30 is sleeved on the inner convex edge 241. In turn, the design of the front cover 30 can protect the front bearing 21 and can closely cooperate with the inner convex edge 241 on the housing 24, further improving the compactness and stability of the whole machine, which is conducive to miniaturization without affecting its performance.

[0040] See also Figure 2 and Figure 6The sensor assembly 40 includes a permanent magnet 41, an end cover 42, a Hall element 43 and a control board 44. The permanent magnet 41 is sleeved on the end of the rotating shaft 11 away from the front cover 30, and adopts a sinusoidal wave magnetization technology. The magnetization waveform can also be a triangular wave, a rectangular wave, etc., to effectively improve the smoothness and accuracy of the motor during operation, reduce vibration and noise, and improve the overall performance.

[0041] When the permanent magnet 41 rotates one circle, the Hall element 43 can output a voltage waveform that forms a linear relationship with the magnetization wave, and the change position of the rotating shaft 11 can be obtained in turn. The end cover 42 is made of a stamped steel plate, and is used to be sleeved on the rotating shaft 11, located between the permanent magnet 41 and the housing 24, and one end face is fixed to the housing 24. The Hall element 43 is set on the control board 44, and the control board 44 is sleeved on the rotating shaft 11, and is located between the permanent magnet 41 and the end cover 42.

[0042] Specifically, a second fixing hole 421, i.e., a through hole, is provided on the edge of the end cover 42 (see Figure 4 ), the second fixing hole 421 can facilitate the fixing of the motor, thereby improving the overall structural stability of the motor and facilitating the improvement of the operating accuracy of the motor in a working state.

[0043] See also Figure 2 The Hall element 43 is provided in multiple numbers, for example, two, all of which are provided on the control board 44, which can detect the position change of the rotating shaft 11 more accurately, improve the accuracy and response speed of the motor control, and thus improve the overall motion control performance.

[0044] The size of the control board 44 is smaller than that of the end cover 42, so that the control board 44 can be better positioned and installed at a predetermined position, which helps to further reduce the overall volume of the motor and improve space utilization while ensuring electrical performance.

[0045] See also Figure 5 and Figure 6 , the rear cover 50 is covered with the permanent magnet 41 and fixed on the end cover 42. In order to enhance the fixing stability of the rear cover 50, in this embodiment, a fixing member 60 is also included, and first fixing holes 51 are correspondingly provided on the rear cover 50, the end cover 42 and the control board 44. The fixing member 60 is fixed through the first fixing hole 51, which can effectively improve the installation stability of the rear cover 50, the end cover 42 and the control board 44, ensure the accurate positioning of the permanent magnet 41 and related components, and thus improve the overall working stability and reliability of the galvanometer motor.

[0046] The rear cover 50 is provided with a receiving groove 52 corresponding to the permanent magnet 41 (see Figure 6), the permanent magnet 41 is located in the accommodating groove 52, which can prevent the permanent magnet 41 from being damaged by external collision or friction, thereby increasing the service life of the permanent magnet 41, and further ensuring the stability and reliability of the overall operation of the motor.

[0047] In addition, see Figure 2 A shaft shoulder 112 is provided on the rotating shaft 11 for dividing it into a first bearing section 113 and a second bearing section 114 with different diameters.

[0048] Among them, one end of the rear bearing 22 close to the magnetic steel part 12 abuts against the shaft shoulder 112, and the permanent magnet 41, the control board 44, the end cover 42 and the rear bearing 22 are sequentially sleeved on the first bearing section 113. The magnetic steel part 12 and the front bearing 21 are sleeved on the second bearing section 114, and the coil 23 and the housing 24 are sequentially sleeved on the magnetic steel part 12.

[0049] In turn, the shoulder 112 provided on the rotating shaft 11 can not only effectively locate the position of the rear bearing 22, but also realize that different components can be installed on the first bearing section 113 and the second bearing section 114 of different diameters according to the functional area, thereby improving the assembly efficiency and the compactness of the structure. Among them, the permanent magnet 41, the control board 44, the end cover 42 and the rear bearing 22 are reasonably arranged in the first bearing section 113, while the magnetic steel part 12 and the front bearing 21 are optimally arranged in the second bearing section 114, which can further improve the space utilization efficiency and the overall stability of the motor.

[0050] In summary, the novel galvanometer motor disclosed in the embodiment of the present application can limit the position deviation of the rotor assembly 10 by setting the limiting hole 111 on the rotating shaft 11, the limiting member 13 and the limiting groove 31 on the front cover 30, thereby ensuring the stability and reliability of the rotor assembly 10 when the motor is running; the design of the front bearing 21 and the rear bearing 22 ensures the flexible rotation of the rotating shaft 11, while also increasing the mechanical strength and durability of the entire motor device; in addition, the setting of the permanent magnet 41 and the effective combination of the Hall element and the control board 44 can enable the motor to have accurate speed and position feedback capabilities, thereby realizing high-precision drive control; the rear cover 50 and the end cover 42 together constitute a good environment for protecting the permanent magnet 41 and related electronic devices from external interference. In turn, the embodiment of the present application can ensure the stability, reliability and precise positioning of the motor during operation on the basis of a simplified structure.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A novel galvanometer motor, characterized in that: include: The rotor assembly (10) comprises: a rotating shaft (11), a magnetic steel member (12) and a limiting member (13), wherein the magnetic steel member (12) is sleeved on the rotating shaft (11), and a limiting hole (111) is provided on the rotating shaft (11) for inserting the limiting member (13); The stator assembly (20) comprises: a front bearing (21), a rear bearing (22), a coil (23) and a housing (24), wherein the front bearing (21) and the rear bearing (22) are sleeved on both ends of the rotating shaft (11), and the coil (23) is located in the housing (24) and is sleeved on the magnetic steel member (12) in sequence; A front cover (30) is sleeved on an end of the housing (24) away from the rear bearing (22) and covers the front bearing (21), and a limiting groove (31) is provided on the front cover (30) for the rotating shaft (11) to pass through and for the limiting member (13) to be accommodated; The sensor assembly (40) comprises: a permanent magnet (41), an end cover (42), a Hall element (43) and a control board (44), wherein the permanent magnet (41) is sleeved on one end of the rotating shaft (11) away from the front cover (30), the end cover (42) is sleeved on the rotating shaft (11) and is located between the permanent magnet (41) and the housing (24), and one end surface is abutted and fixed to the housing (24), the Hall element (43) is arranged on the control board (44), and the control board (44) is sleeved on the rotating shaft (11) and is located between the permanent magnet (41) and the end cover (42); A rear cover (50) covers the permanent magnet (41) and is fixed on the end cover (42).

2. The novel galvanometer motor according to claim 1 is characterized in that: The rotating shaft (11) is provided with a shaft shoulder (112) for dividing the rotating shaft (11) into a first bearing section (113) and a second bearing section (114) having different diameters; One end of the rear bearing (22) close to the magnetic steel member (12) abuts against the shaft shoulder (112); the permanent magnet (41), the control panel (44), the end cover (42) and the rear bearing (22) are sleeved on the first bearing section (113) in sequence; the magnetic steel member (12) and the front bearing (21) are sleeved on the second bearing section (114); and the coil (23) and the housing (24) are sleeved on the magnetic steel member (12) in sequence.

3. The novel galvanometer motor according to claim 1 is characterized in that: One end of the housing (24) away from the rear bearing (22) is an inner convex edge (241), and the front cover (30) is sleeved on the inner convex edge (241).

4. The novel galvanometer motor according to claim 1 is characterized in that: The permanent magnet (41) is magnetized using a sinusoidal wave.

5. The novel galvanometer motor according to claim 1 is characterized in that: Also includes: A fixing member (60), wherein a first fixing hole (51) is provided on the rear cover (50), the end cover (42) and the control panel (44) corresponding to the fixing member (60).

6. The novel galvanometer motor according to claim 1 is characterized in that: The Hall elements (43) are arranged in plurality, all of which are arranged on the control board (44).

7. The novel galvanometer motor according to claim 1 is characterized in that: The rear cover (50) is provided with a receiving groove (52) corresponding to the permanent magnet (41).

8. The novel galvanometer motor according to claim 1 is characterized in that: The rotating shaft (11) is connected to the front bearing (21) and the rear bearing (22) by interference fit.

9. The novel galvanometer motor according to claim 1 is characterized in that: A second opposite fixing hole (421) is provided on the edge of the end cover (42).

10. The novel galvanometer motor according to claim 1 is characterized in that: The size of the control panel (44) is smaller than the size of the end cover (42).

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