Small servo electric pole

Abstract

The utility model discloses a small servo electric pole which comprises a first shell, the side surface of the first shell is fixedly connected with a second shell, and the side surface of the second shell is fixedly connected with a third shell. Through the arrangement of a double-shaft motor, a sliding roller, a duplicate gear and other structures, the double-shaft motor is started to output torque, the torque is provided for a lead screw through the speed reduction and torque increasing effects of the duplicate gear, the lead screw is matched with a nut, and through the sliding roller and a guide rail structure, the rotating motion of the double-shaft motor is changed into the linear motion of the nut and a push rod; meanwhile, the servo controller controls the motor to accurately rotate through a magnetic grid receiver of the guide rail and a feedback signal of an encoder at an output shaft of the double-shaft motor, and indirectly controls the position of the output shaft according to the feedback accurate position of the nut guide rail, so that closed-loop control is formed, and the power of the motor is converted into accurate linear motion; and high-precision and high-performance actions can be realized under the condition of small size, and the practicability is high.

Description

Technical Field

[0001] The utility model relates to the field of servo poles, in particular to a small servo pole. Background Art

[0002] The servo electric cylinder is a modular product that integrates a servo motor and a lead screw. It converts the rotational motion of the servo motor into linear motion. Due to the closed-loop servo control, the control accuracy is high. It has the characteristics of low cost and flexible configuration. It is the best substitute for hydraulic cylinders and pneumatic cylinders.

[0003] In the prior art, the servo electric cylinders on the market are usually large in size and heavy in weight, which are not suitable for application scenarios with limited space or requiring miniaturized design. They have certain limitations, and therefore a small servo electric rod is needed. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide a small servo pole. Through the arrangement of structures such as a dual-axis motor, a sliding roller and a double-gear, the dual-axis motor is started to make the dual-axis motor output torque, which is provided to the lead screw after deceleration and torque amplification by the double-gear. The lead screw cooperates with the nut, and through the sliding roller and guide rail structure, the rotational motion of the dual-axis motor is changed into the linear motion of the nut and the push rod. At the same time, the servo controller controls the precise rotation of the motor through the feedback signal of the magnetic grid receiver of the guide rail and the encoder at the output shaft of the dual-axis motor, and indirectly controls the output shaft position through the feedback of the precise nut guide rail position, forming a closed-loop control, converting the power of the motor into precise linear motion, so that it can achieve high-precision and high-performance actions in a small volume, and has strong practicality.

[0005] The utility model also provides a small servo pole as described above, comprising a first shell, a second shell fixedly connected to the side surface of the first shell, a third shell fixedly connected to the side surface of the second shell, a mounting base fixedly connected to the side surface of the third shell, a support frame fixedly connected to the third shell, a magnetic grid receiver fixedly connected to the inner surface of the support frame, two guide rails fixedly connected to the support frame, sliding rollers slidably connected to the inner surfaces of the two guide rails, the two sliding rollers fixedly connected to the same guide rail support, the guide rail support is fixedly connected to the support frame. A magnetic grating bar is connected, a nut is fixedly connected to the guide rail support, a push rod is fixedly connected to the front surface of the nut, a lead screw is threadedly connected to the inner surface of the nut, a thrust bearing is fixedly connected to the side surface of the lead screw, a bearing is fixedly connected to the side surface of the thrust bearing, a first gear is fixedly connected to the bearing, a dual-axis motor is fixedly connected to the interior of the second shell, two output ends of the dual-axis motor are respectively fixedly connected to the second gear and the magnet, a double-linked gear is rotatably connected to the side inner wall of the first shell, and the double-linked gear is respectively meshed with the first gear and the second gear.

[0006] According to the small servo pole, a waterproof connector is fixedly connected to the lower surface of the second shell, which has a good waterproof and dustproof effect on the outgoing line.

[0007] According to the small servo pole, the push rod passes through the mounting base plate so that the push rod can move smoothly.

[0008] According to the small servo pole, the side surfaces of the mounting base plate are respectively provided with a first pin and a second pin to ensure the installation and positioning of the pole.

[0009] According to the small servo pole, a shaft sleeve with a sealing ring is arranged on the mounting base plate, and a clearance fit is formed between the push rod and the shaft sleeve with a sealing ring to reduce wear on the shaft and the seat.

[0010] According to the small servo pole, a motor encoder is disposed inside the third housing, and the dual-axis motor is electrically connected to the motor encoder.

[0011] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0013] Figure 1 This is the overall structure diagram of a small servo pole of the utility model;

[0014] Figure 2 This is a structural schematic diagram of a push rod part of a small servo electric pole of the utility model;

[0015] Figure 3 This is a structural schematic diagram of a dual-axis motor part of a small servo pole of the utility model;

[0016] Figure 4 This is a structural schematic diagram of a support frame portion of a small servo pole of the utility model;

[0017] Figure 5 This is a structural schematic diagram of a guide rail section of a small servo pole of the utility model;

[0018] Figure 6 The utility model is a structural schematic diagram of a nut cross-section of a small servo pole.

[0019] Legend:

[0020] 1. First shell; 2. Second shell; 3. Third shell; 4. Mounting base plate; 5. Waterproof joint; 6. Support frame; 7. Magnetic grid receiver; 8. Guide rail; 9. Guide rail support; 10. Magnetic grid strip; 11. Nut; 12. Push rod; 13. Screw rod; 14. Thrust bearing; 15. Bearing; 16. First gear; 17. Dual-axis motor; 18. Second gear; 19. Magnet; 20. Duplex gear; 21. Motor encoder; 22. First pin; 23. Second pin; 24. Bushing with sealing ring; 25. Sliding roller. DETAILED DESCRIPTION

[0021] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0022] Reference Figure 1-6The utility model embodiment is a small servo pole, which includes a first shell 1, a second shell 2 is fixedly connected to the side surface of the first shell 1, a third shell 3 is fixedly connected to the side surface of the second shell 2, a mounting base plate 4 is fixedly connected to the side surface of the third shell 3, a waterproof joint 5 is fixedly connected to the lower surface of the second shell 2, a support frame 6 is fixedly connected to the third shell 3, a magnetic grid receiver 7 is fixedly connected to the inner surface of the support frame 6, two guide rails 8 are fixedly connected to the support frame 6, the inner surfaces of the two guide rails 8 are slidably connected to sliding rollers 25, the two sliding rollers 25 are fixedly connected to the same guide rail support 9, a magnetic grid strip 10 is fixedly connected to the guide rail support 9, a nut 11 is fixedly connected to the guide rail support 9, a push rod 12 is fixedly connected to the front surface of the nut 11, and the push rod 12 passes through the installation The base plate 4 is installed, the inner surface of the nut 11 is threadedly connected with a screw rod 13, the side surface of the screw rod 13 is fixedly connected with a thrust bearing 14, the side surface of the thrust bearing 14 is fixedly connected with a bearing 15, and the first gear 16 is fixedly connected to the bearing 15. The interior of the second shell 2 is fixedly connected with a dual-axis motor 17, and the two output ends of the dual-axis motor 17 are respectively fixedly connected with a second gear 18 and a magnet 19. The side inner wall of the first shell 1 is rotatably connected with a double gear 20, and the double gear 20 is respectively meshed with the first gear 16 and the second gear 18. A motor encoder 21 is arranged inside the third shell 3, and the dual-axis motor 17 is electrically connected to the motor encoder 21. The side surfaces of the mounting base plate 4 are respectively provided with a first pin 22 and a second pin 23, and a shaft sleeve 24 with a sealing ring is arranged on the mounting base plate 4.

[0023] Working principle: There is a clearance fit between the push rod 12 and the shaft sleeve 24 with a sealing ring to reduce the wear of the shaft and the seat, reduce friction, and fix the position. The first pin 22 and the second pin 23 are installed on the installation base plate 4 with interference fit to ensure the installation and positioning of the pole. The waterproof joint 5 is installed on the second shell 2 to have a good waterproof and dustproof effect on the outgoing line. The guide rail 8 and the sliding roller 25 on the guide rail support 9 together form a cross roller guide pair, so that the guide rail support 9, the magnetic grid bar 10, the nut 11 and the push rod 12 can move in a straight line. The bearing 15 supports the rotation of the screw rod 13 and ensures the rotation accuracy. The first gear 16 is meshed with the small diameter indexing circular gear of the double gear 20, and the large diameter indexing circular gear of the double gear 20 is meshed with the second gear 18 to increase the torque and provide it to the screw rod 13. By starting the dual-axis motor 17 , so that the started dual-axis motor 17 can drive the second gear 18 to rotate, so that the rotating second gear 18 drives the meshing dual gear 20 to rotate, and under the action of the dual gear 20, the torque is increased and drives the first gear 16 to rotate, so that the rotating first gear 16 drives the lead screw 13 and the thrust bearing 14 to rotate, and then the rotating lead screw 13 drives the guide rail support 9, the magnetic grid bar 10, the nut 11, the push rod 12 and the sliding roller 25 to perform reciprocating linear motion. At the same time, the servo controller controls the precise rotation of the dual gear 20 through the feedback signal of the magnetic grid receiver 7 and the motor encoder 21, and the guide rail 8 and the sliding roller 25 on the guide rail support 9 together form a cross roller guide pair to indirectly control the output shaft position, forming a closed-loop control, and converting the power of the dual-axis motor 17 into precise linear motion.

[0024] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A small servo pole, characterized in that: include: A first shell (1), wherein the side surface of the first shell (1) is fixedly connected to a second shell (2), the side surface of the second shell (2) is fixedly connected to a third shell (3), the side surface of the third shell (3) is fixedly connected to a mounting base plate (4), the third shell (3) is fixedly connected to a support frame (6), the inner surface of the support frame (6) is fixedly connected to a magnetic grating receiver (7), the support frame (6) is fixedly connected to two guide rails (8), the inner surfaces of the two guide rails (8) are both slidably connected to sliding rollers (25), the two sliding rollers (25) are fixedly connected to the same guide rail support (9), the guide rail support (9) is fixedly connected to a magnetic grating strip (10), and the guide rail support (9) is fixedly connected to a nut (11), a push rod (12) is fixedly connected to the front surface of the nut (11), a screw rod (13) is threadedly connected to the inner surface of the nut (11), a thrust bearing (14) is fixedly connected to the side surface of the screw rod (13), a bearing (15) is fixedly connected to the side surface of the thrust bearing (14), a first gear (16) is fixedly connected to the bearing (15), a dual-axis motor (17) is fixedly connected to the interior of the second housing (2), two output ends of the dual-axis motor (17) are respectively fixedly connected to a second gear (18) and a magnet (19), and a double-linked gear (20) is rotatably connected to the side inner wall of the first housing (1), and the double-linked gear (20) is respectively meshed with the first gear (16) and the second gear (18).

2. A small servo pole according to claim 1, characterized in that: A waterproof joint (5) is fixedly connected to the lower surface of the second housing (2).

3. A small servo pole according to claim 1, characterized in that: The push rod (12) passes through the mounting base plate (4).

4. A small servo pole according to claim 1, characterized in that: The side surfaces of the mounting base plate (4) are respectively provided with a first pin (22) and a second pin (23).

5. A small servo pole according to claim 1, characterized in that: A shaft sleeve (24) with a sealing ring is arranged on the installation base plate (4).

6. A small servo pole according to claim 1, characterized in that: A motor encoder (21) is disposed inside the third housing (3), and the dual-axis motor (17) is electrically connected to the motor encoder (21).

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