Motor rotor position finding and positioning mechanism

Abstract

The utility model discloses a motor rotor position finding and positioning mechanism, which comprises a base, a stator main body is arranged at the central position of the top of the base, a rotor main body penetrates through the central position of the stator main body, a positioning assembly is arranged at the top end in the base, a one-way screw rod is arranged in a first frame body, and a positioning assembly is arranged in the first frame body. A one-way lead screw is fixed to the top of the first frame body, a driving block is arranged on the one-way lead screw in a sleeving mode, a pressing plate is arranged on one side of the driving block, a second servo motor is fixed to the top of the first frame body, the output end of the second servo motor is connected with the one-way lead screw, the movable plate is arranged at the top of the pressing plate, and a pressure part is arranged at the bottom end of the movable plate. By installing the base, the positioning assembly, the stator main body, the rotor main body and the pressing plate, the rotor main body and the center position of the stator main body are connected in an inserted mode, the uniformity of the gap between the rotor main body and the stator main body is improved, friction is reduced, and the service life of the motor is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of rotor assembly, in particular to a motor rotor positioning mechanism. Background Art

[0002] The motor rotor is the motor rotor. The rotor and stator in the motor are used together to realize the conversion of electrical energy into mechanical energy and mechanical energy into electrical energy. When assembling the motor rotor and stator, the rotor needs to be inserted into the center of the stator.

[0003] Since the air gap between the stator and the rotor is small, if the gap between the rotor and the stator is uneven during assembly, it may cause large fluctuations in the motor torque output at the least, or cause friction between the motor stator and the rotor, leading to motor damage. Therefore, a motor rotor positioning mechanism is required to assist in the assembly of the rotor and the stator. Utility Model Content

[0004] The purpose of the utility model is to provide a motor rotor positioning mechanism to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a motor rotor positioning mechanism, comprising: a base, a stator body is arranged at the central position of the top of the base, and a rotor body passes through the central position of the stator body;

[0006] A positioning assembly, the positioning assembly is arranged at the top end inside the base, and the positioning assembly includes a groove, a first servo motor, a positioning member, a bidirectional screw rod, a movable sleeve, a clamping member and a positioning cavity;

[0007] A first frame, wherein a one-way screw is disposed inside the first frame, a driving block is sleeved on the one-way screw, a pressure plate is disposed on one side of the driving block, a second servo motor is fixed on the top of the first frame, and an output end of the second servo motor is connected to the one-way screw;

[0008] The movable plate is arranged on the top of the pressure plate, and a pressure piece is arranged at the bottom end of the movable plate.

[0009] Preferably, a second frame is disposed at one end of the base away from the first frame, and a guide rod is disposed inside the second frame, and one end of the pressure plate is slidably sleeved with the guide rod via a guide sleeve.

[0010] Preferably, a bidirectional screw rod is arranged inside the groove, and movable sleeves are sleeved on both ends of the bidirectional screw rod, and clamping pieces are arranged on the tops of the movable sleeves, and the clamping pieces are in contact with and clamped on both sides of the stator body.

[0011] Preferably, the positioning member is arranged on the top of the clamping member, and a positioning cavity is formed between the positioning members, the positioning cavity is a conical structure that is wide at the top and narrow at the bottom, and the rotor body passes through the positioning cavity.

[0012] Preferably, a first servo motor is fixed to one end of the groove, and an output end of the first servo motor is connected to a bidirectional lead screw.

[0013] Preferably, the top end of the pressure piece passes through the movable plate, and the top end of the pressure piece is locked with the movable plate by a fastener.

[0014] Preferably, a cylinder is fixed to one end of the top of the pressure plate, and the output end of the cylinder is connected to the movable plate through a telescopic rod, and a limit baffle is provided at one end of the top of the movable plate away from the cylinder.

[0015] Preferably, both sides of the top of the pressure plate are provided with sliding grooves, and both sides of the bottom of the movable plate are connected to the sliding grooves through sliding blocks.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the motor rotor positioning mechanism is equipped with a base, a positioning assembly, a stator body, a rotor body pressure plate and a pressure piece. The stator body is placed on the base. The first servo motor drives the bidirectional screw to rotate, so that the movable sleeve moves along the bidirectional screw. The two sides of the stator body are clamped and fixed by the clamping piece to prevent the stator body from being offset. While the clamping piece clamps the stator body, the positioning pieces are closed to each other, and a positioning cavity is formed inside the positioning pieces. The positioning cavity adopts a funnel form that is wide at the top and narrow at the bottom, which is convenient for the rotor body to be inserted and maintained in a vertical state. The positioning assembly is used to facilitate the correspondence of the center points of the rotor body and the stator body, which is convenient for positioning. After that, the pressure piece is driven downward by the pressure plate to apply pressure to the rotor body, so that it is inserted and connected with the center position of the stator body, thereby improving the uniformity of the gap between the rotor body and the stator body, reducing friction, and extending the service life of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the positioning component of the utility model;

[0019] Figure 3 This is a schematic diagram of the side view structure of the positioning member of the utility model;

[0020] Figure 4 It is a schematic diagram of the top view structure of the movable plate of the utility model.

[0021] In the figure: 1. base; 2. positioning assembly; 201. groove; 202. first servo motor; 203. positioning member; 204. bidirectional screw; 205. movable sleeve; 206. clamping member; 207. positioning cavity; 3. stator body; 4. rotor body; 5. first frame; 6. drive block; 7. second servo motor; 8. pressure member; 9. movable plate; 10. cylinder; 11. pressure plate; 12. second frame; 13. guide rod; 14. fastener; 15. one-way screw; 16. limit baffle; 17. slide groove. DETAILED DESCRIPTION

[0022] 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. 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.

[0023] See also Figure 1-4 The utility model provides an embodiment: a motor rotor positioning mechanism, comprising: a base 1, a stator body 3 is arranged at the central position of the top of the base 1, and a rotor body 4 passes through the central position of the stator body 3;

[0024] The positioning assembly 2 is arranged at the top of the base 1, and the positioning assembly 2 includes a groove 201, a first servo motor 202, a positioning member 203, a bidirectional screw rod 204, a movable sleeve 205, a clamping member 206 and a positioning cavity 207;

[0025] A bidirectional screw rod 204 is disposed inside the groove 201, and both ends of the bidirectional screw rod 204 are sleeved with movable sleeves 205, and the top of the movable sleeve 205 is provided with a clamping piece 206, and the clamping piece 206 is in contact with both sides of the stator body 3 and clamped;

[0026] A first servo motor 202 is fixed to one end of the groove 201, and an output end of the first servo motor 202 is connected to a bidirectional lead screw 204;

[0027] The stator body 3 is placed on the base 1, and the first servo motor 202 drives the bidirectional screw rod 204 to rotate, so that the movable sleeve 205 moves along the bidirectional screw rod 204, and the two sides of the stator body 3 are clamped and fixed by the clamping member 206 to prevent the stator body 3 from being offset;

[0028] The positioning member 203 is disposed on the top of the clamping member 206, and a positioning cavity 207 is formed between the positioning members 203. The positioning cavity 207 is a conical structure that is wide at the top and narrow at the bottom. The rotor body 4 passes through the positioning cavity 207.

[0029] While the clamping member 206 clamps the stator body 3, the positioning members 203 are closed to each other, and a positioning cavity 207 is formed inside the positioning members 203. The positioning cavity 207 is in the form of a funnel that is wide at the top and narrow at the bottom, so that the rotor body 4 can be inserted and kept in a vertical state. After the rotor body 4 is inserted into the positioning cavity 207, the bottom end corresponds to the center point of the stator body 3, which is convenient for positioning;

[0030] A first frame 5, wherein a one-way screw rod 15 is disposed inside the first frame 5, and a driving block 6 is sleeved on the one-way screw rod 15, and a pressure plate 11 is disposed on one side of the driving block 6;

[0031] A movable plate 9, the movable plate 9 is arranged on the top of the pressure plate 11, and a pressure piece 8 is arranged at the bottom end of the movable plate 9;

[0032] A second servo motor 7 is fixed on the top of the first frame 5, and an output end of the second servo motor 7 is connected to a one-way screw rod 15;

[0033] The second servo motor 7 drives the one-way screw 15 to rotate, so that the driving block 6 moves downward along the one-way screw 15, drives the pressure plate 11 to move downward, and applies pressure to the rotor body 4 through the pressure piece 8, so that the rotor body 4 is slowly inserted into the center position of the stator body 3;

[0034] A second frame 12 is disposed at one end of the base 1 away from the first frame 5, and a guide rod 13 is disposed inside the second frame 12. One end of the pressing plate 11 is slidably sleeved with the guide rod 13 through a guide sleeve, so as to guide the pressing plate 11 when it moves, so that the lifting and lowering thereof is more stable.

[0035] A cylinder 10 is fixed to one end of the top of the pressing plate 11, and the output end of the cylinder 10 is connected to the movable plate 9 through a telescopic rod;

[0036] The cylinder 10 can drive the movable plate 9 to move, so that the position of the pressure piece 8 can be adjusted so that it is in the same vertical line as the rotor body 4;

[0037] Both sides of the top of the superior pressure plate 11 are provided with slide grooves 17, and both sides of the bottom of the movable plate 9 are connected to the slide grooves 17 through sliders. A limit stopper 16 is provided at one end of the top of the movable plate 9 away from the cylinder 10 to limit the range of movement of the movable plate 9 and guide the movable plate 9 when it moves;

[0038] The top of the pressure piece 8 passes through the movable plate 9, and the top of the pressure piece 8 is locked with the movable plate 9 by a fastener 14, so that the pressure piece 8 is easy to dismantle and replace, and can be replaced according to the specifications of the rotor body 4;

[0039] The specific models and specifications of the first servo motor 202, the second servo motor 7 and the cylinder 10 need to be determined by selection calculation based on the specification parameters of the device. The selection calculation method is existing technology, so it will not be described in detail.

[0040] Working principle: When the embodiment of the present application is in use, the stator body 3 is placed on the base 1, and the first servo motor 202 drives the bidirectional screw 204 to rotate, so that the movable sleeve 205 moves along the bidirectional screw 204, and the two sides of the stator body 3 are clamped and fixed by the clamping piece 206 to prevent the stator body 3 from being offset. While the clamping piece 206 clamps the stator body 3, the positioning pieces 203 are closed to each other, and a positioning cavity 207 is formed inside the positioning pieces 203. The positioning cavity 207 adopts a funnel form that is wide at the top and narrow at the bottom, which is convenient for the rotor body 4 to be inserted and maintained in a vertical state. After the rotor body 4 is inserted into the positioning cavity 207, the bottom end corresponds to the center point of the stator body 3, which is convenient for positioning. Then, the cylinder 10 drives the movable plate 9 to move, and adjusts the pressure piece 8 to the top of the rotor body 4. The second servo motor 7 drives the unidirectional screw 15 to rotate, so that the drive block 6 moves down along the unidirectional screw 15, drives the pressure plate 11 to move down, and applies pressure to the rotor body 4 through the pressure piece 8, so that it is slowly inserted into the center position of the stator body 3.

[0041] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0042] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0043] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A motor rotor positioning mechanism, characterized in that: include: A base (1), wherein a stator body (3) is arranged at a central position on the top of the base (1), and a rotor body (4) passes through a central position of the stator body (3); A positioning assembly (2), the positioning assembly (2) being arranged at the top end inside the base (1), and the positioning assembly (2) comprising a groove (201), a first servo motor (202), a positioning member (203), a bidirectional screw rod (204), a movable sleeve (205), a clamping member (206) and a positioning cavity (207); A first frame (5), wherein a one-way screw (15) is arranged inside the first frame (5), a driving block (6) is sleeved on the one-way screw (15), a pressure plate (11) is arranged on one side of the driving block (6), a second servo motor (7) is fixed on the top of the first frame (5), and an output end of the second servo motor (7) is connected to the one-way screw (15); A movable plate (9), wherein the movable plate (9) is arranged on the top of the pressure plate (11), and a pressure piece (8) is arranged at the bottom end of the movable plate (9).

2. A motor rotor positioning mechanism according to claim 1, characterized in that: A second frame (12) is arranged at one end of the base (1) on a side away from the first frame (5), and a guide rod (13) is arranged inside the second frame (12), and one end of the pressure plate (11) is slidably sleeved with the guide rod (13) via a guide sleeve.

3. The motor rotor positioning mechanism according to claim 1, characterized in that: A bidirectional screw rod (204) is arranged inside the groove (201), and movable sleeves (205) are sleeved on both ends of the bidirectional screw rod (204), and clamping pieces (206) are arranged on the top of the movable sleeves (205), and the clamping pieces (206) are in contact with and clamped on both sides of the stator body (3).

4. A motor rotor positioning mechanism according to claim 3, characterized in that: The positioning member (203) is arranged on the top of the clamping member (206), and a positioning cavity (207) is formed between the positioning members (203). The positioning cavity (207) is a conical structure that is wide at the top and narrow at the bottom, and the rotor body (4) passes through the positioning cavity (207).

5. The motor rotor positioning mechanism according to claim 3, characterized in that: A first servo motor (202) is fixed to one end of the groove (201), and an output end of the first servo motor (202) is connected to a bidirectional lead screw (204).

6. The motor rotor positioning mechanism according to claim 1, characterized in that: The top end of the pressure piece (8) passes through the movable plate (9), and the top end of the pressure piece (8) is locked with the movable plate (9) via a fastener (14).

7. The motor rotor positioning mechanism according to claim 1, characterized in that: A cylinder (10) is fixed to one end of the top of the pressure plate (11), and the output end of the cylinder (10) is connected to the movable plate (9) via a telescopic rod. A limit stopper (16) is provided at one end of the top of the movable plate (9) away from the cylinder (10).

8. The motor rotor positioning mechanism according to claim 1, characterized in that: Both sides of the top of the pressing plate (11) are provided with sliding grooves (17), and both sides of the bottom of the movable plate (9) are connected to the sliding grooves (17) via sliding blocks.

Images