Encoder integrated servo driving mechanism

Abstract

The utility model discloses an encoder integrated servo driving mechanism which comprises a shell, one side of an inner cavity of the shell is rotatably connected with a shaft sleeve through a deep groove ball bearing, the end face of the shaft sleeve is connected with a first bevel gear, and the outer wall of the shaft sleeve is provided with a first gear; a servo motor is arranged outside the shell, and an output shaft of the servo motor extends into the shell and is connected with a second bevel gear meshed with the first bevel gear. The other side of the inner cavity of the shell is rotationally connected with a ball screw kinematic pair through an angular contact ball bearing, and a screw nut of the ball screw kinematic pair is sleeved with a second gear meshed with the first gear. According to the utility model, through the integrated design of the speed reducing mechanism and the encoder, the design of a small-size fast-response servo driving mechanism is realized, and the use requirements of specific scenes are met.

Description

Technical Field

[0001] The utility model relates to the technical field of servo drive, in particular to an encoder integrated servo drive mechanism. Background Technique

[0002] The servo drive mechanism is used to drive the object to be adjusted to move. When the object to be adjusted is in linear motion, the servo drive mechanism needs to convert the rotary motion of the motor into the linear motion of the object to be adjusted. When the object to be adjusted is in rotary motion, the servo drive mechanism needs to convert the rotational speed of the motor into the rotational speed that meets the requirements of the object to be adjusted. At present, the encoders of servo drive mechanisms at home and abroad are generally designed separately from the drive mechanisms and then assembled and combined, which inevitably leads to an increase in volume. With the increasing demand for small-volume and high-response-speed servo drive mechanisms in the rapid control of unmanned aerial vehicles and other fields. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the existing defects, provide an encoder integrated servo drive mechanism, through the integrated design of the reduction mechanism and the encoder, realize the design of a small-volume and fast-response servo drive mechanism, meet the use requirements of specific scenarios, and can effectively solve the problems in the background technique.

[0004] To achieve the above object, the utility model provides the following technical scheme: An encoder integrated servo drive mechanism, including a housing, one side of the inner cavity of the housing is rotationally connected with a bushing through a deep groove ball bearing, a bevel gear one is connected to the end face of the bushing, and a gear one is arranged on the outer wall of the bushing; a servo motor is arranged outside the housing, and the output shaft of the servo motor extends into the housing and is connected with a bevel gear two that meshes with the bevel gear one; the other side of the inner cavity of the housing is rotationally connected with a ball screw pair through an angular contact ball bearing, and a gear two that meshes with the gear one is sleeved on the screw nut of the ball screw pair.

[0005] Preferably, a cover plate is also arranged at the opening on one side of the housing, the cover plate is connected with the housing through screws, and an encoder is arranged in the inner cavity of the cover plate corresponding to the bushing, and the rotating shaft of the encoder is connected with the bevel gear one and the axes coincide.

[0006] Preferably, there are two deep groove ball bearings, and the two deep groove ball bearings are correspondingly located above and below the gear one.

[0007] Preferably, an adjusting nut is threadedly connected to the screw rod of the ball screw pair, and the adjusting nut abuts against the screw nut of the ball screw pair.

[0008] Preferably, there are two angular contact ball bearings and they are arranged at intervals.

[0009] Preferably, the bevel gear one is fixedly connected to the bushing through screws.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: The servo motor drives the ball screw pair to act through bevel gear transmission and gear transmission. The bevel gear transmission forms the first-stage deceleration, and the gear transmission forms the second-stage deceleration, so as to realize the linear output of the servo drive mechanism. The bevel gear transmission, gear transmission and encoder are all arranged in the shell. Through the integrated design of the deceleration mechanism and encoder, a servo drive mechanism with small volume and fast response is realized, meeting the use requirements of specific scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model.

[0012] In the figure: 1 housing, 2 servo motor, 3 bevel gear II, 4 gear I, 5 deep groove ball bearing, 6 encoder, 7 bushing, 8 cover plate, 9 adjusting nut, 10 gear II, 11 angular contact ball bearing, 12 ball screw pair, 13 bevel gear I. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] The utility model can be explained in detail through the following embodiments. The purpose of disclosing the utility model is to protect all technical improvements within the scope of the utility model. In the description of the utility model, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right", etc. indicating the orientation or position relationship, they are only corresponding to the drawings of the present application for the convenience of describing the utility model, rather than indicating or implying that the device or element referred to must have a specific orientation.

[0014] Please refer to Figure 1 , the utility model provides a technical solution: An encoder-integrated servo drive mechanism, including a housing 1. One side of the inner cavity of the housing 1 is rotatably connected with a bushing 7 through a deep groove ball bearing 5. The end face of the bushing 7 is connected with a bevel gear I 13, and a gear I 4 is arranged on the outer wall of the bushing 7; A servo motor 2 is arranged outside the housing 1. The output shaft of the servo motor 2 extends into the housing 1 and is connected with a bevel gear II 3 meshing with the bevel gear I 13; The other side of the inner cavity of the housing 1 is rotatably connected with a ball screw pair 12 through an angular contact ball bearing 11, and a gear II 10 meshing with the gear I 4 is sleeved on the screw nut of the ball screw pair 12;

[0015] It can be understood that the bevel gear I 13 and bevel gear II 3, gear I 4 and gear II 10 are integrated in the housing. At the same time, the servo motor 2 drives the gear transmission through bevel gear transmission, and then drives the ball screw pair 12 to act through gear transmission. The bevel gear transmission forms the first-stage deceleration and the gear transmission forms the second-stage deceleration, so as to realize the conversion of the rotational motion of the servo motor 2 into linear motion;

[0016] Furthermore, a cover plate 8 is provided at the opening on one side of the housing 1. The cover plate 8 is connected to the housing 1 by screws. An encoder 6 is provided in the cover plate 8 corresponding to the inner cavity of the bushing 7. The rotating shaft of the encoder 6 is connected to and coaxial with the first bevel gear 13. The encoder is located inside the bushing 7 and monitors the rotational speed of the first bevel gear 13. The movement distance of the servo mechanism is obtained through the conversion of the bevel gear transmission ratio and the gear transmission ratio. Through the integrated design of the reduction mechanism and the encoder, the design of a small-volume and fast-response servo drive mechanism is realized, meeting the usage requirements of specific scenarios.

[0017] Furthermore, two deep groove ball bearings 5 are provided, and the two deep groove ball bearings 5 are correspondingly located at the upper and lower parts of the first gear 4. Two angular contact ball bearings 11 are provided and arranged at intervals, meeting the installation accuracy requirements.

[0018] Furthermore, an adjusting nut 9 is threadedly connected to the screw rod of the ball screw pair 12. The adjusting nut 9 abuts against the screw nut of the ball screw pair 12. A pre-tightening force is applied through the adjusting nut 9 to ensure that the ball screw pair 12 operates flexibly and has the minimum axial clearance.

[0019] In addition, the first bevel gear 13 is fixedly connected to the bushing 7 by screws, which is convenient for disassembly.

[0020] The parts not detailed in the present utility model are prior arts. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, aiming to include all changes falling within the meaning and scope of the equivalent elements in the content of the present utility model.

Claims

1. An encoder-integrated servo drive mechanism, comprising a housing (1), characterized in that: On one side of the inner cavity of the housing (1), a bushing (7) is rotatably connected through a deep groove ball bearing (5). A first bevel gear (13) is connected to the end face of the bushing (7), and a first gear (4) is provided on the outer wall of the bushing (7). A servo motor (2) is provided outside the housing (1). The output shaft of the servo motor (2) extends into the housing (1) and is connected to a second bevel gear (3) that meshes with the first bevel gear (13). On the other side of the inner cavity of the housing (1), a ball screw pair (12) is rotatably connected through an angular contact ball bearing (11). A second gear (10) that meshes with the first gear (4) is sleeved on the screw nut of the ball screw pair (12).

2. The integrated servo drive mechanism of an encoder according to claim 1, characterized in that: A cover plate (8) is further provided at the opening on one side of the housing (1). The cover plate (8) is connected to the housing (1) by screws. An encoder (6) is provided in the inner cavity of the cover plate (8) corresponding to the bushing (7). The rotating shaft of the encoder (6) is connected to the first bevel gear (13) and the axes coincide.

3. An integrated servo drive mechanism of an encoder according to claim 1, characterized in that: There are two deep groove ball bearings (5), and the two deep groove ball bearings (5) are correspondingly located above and below the first gear (4).

4. An integrated servo drive mechanism for an encoder according to claim 1, characterized in that: An adjusting nut (9) is threadedly connected to the screw of the ball screw pair (12), and the adjusting nut (9) abuts against the screw nut of the ball screw pair (12).

5. An integrated servo drive mechanism for an encoder according to claim 1, characterized in that: There are two angular contact ball bearings (11) which are arranged at intervals.

6. The integrated servo drive mechanism of an encoder according to claim 1, characterized in that: The first bevel gear (13) is fixedly connected to the bushing (7) by screws.

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