Direct-drive type drive and control integrated servo motor

Abstract

The utility model discloses a direct drive type drive and control integrated servo motor, which is characterized by comprising a servo driver and a permanent magnet synchronous motor, the permanent magnet synchronous motor comprises a machine shell, a rotor and a stator, the rotor and the stator are arranged in the machine shell, the machine shell comprises a shell, a front end cover and a rear end cover, the front end cover and the rear end cover are located at the two ends of the shell, the shell comprises an inner shell and an outer shell, a spiral heat dissipation flow channel is formed between the inner shell and the outer shell, and a heat dissipation plate is arranged on the outer surface of the outer shell; and the servo driver is arranged on the heat dissipation plate. According to the utility model, the driver and the motor are integrated, the installation space is reduced, the structure is compact, the installation is convenient, and the energy consumption, the calorific value and the operation noise are greatly reduced.

Description

Technical Field

[0001] The utility model relates to the field of motors, in particular to a direct-drive type drive-control integrated servo motor. Background Art

[0002] At present, the motor of a traditional motor needs to be driven by a driver to operate. Since the driver and the motor are independent of each other, this traditional combined drive has defects: 1. It is large in size, occupies a large space, and has a bulky structure; 2. The drive and the motor are placed in two independent areas, the control distance is far, and the loss is large; 3. The overall cost is high. The above defects cause the existing products to occupy a large space, and the installation space and use cost of the equipment are high, so further improvement is needed. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a direct-drive integrated control servo motor, in which the driver is integrated with the permanent magnet synchronous motor itself, reducing the installation space, having a compact structure, and being easy to install, and greatly reducing energy consumption, heat generation, and operating noise.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A direct-drive integrated servo motor, characterized by comprising a servo driver and a permanent magnet synchronous motor;

[0006] The permanent magnet synchronous motor comprises a casing and a rotor and a stator arranged inside the casing, the casing comprises a shell and a front cover and a rear cover located at both ends of the shell, the shell comprises an inner shell and an outer shell, a spiral heat dissipation channel is provided between the inner shell and the outer shell, and a heat dissipation plate is provided on the outer surface of the outer shell;

[0007] The servo driver is arranged on a heat sink.

[0008] Preferably, a spiral heat dissipation groove is provided on the outer side wall of the inner shell, and the outer shell is coaxially arranged outside the inner shell to seal the spiral heat dissipation groove to form a spiral heat dissipation flow channel.

[0009] Preferably, the lower surface of the heat sink is an arc structure and fits with the outer wall of the housing, and the upper surface is a plane structure for installation of the servo drive.

[0010] Preferably, the thickness of the heat sink gradually decreases from the left and right sides to the middle portion, and the power module in the servo drive corresponds to the middle portion of the heat sink.

[0011] Preferably, the inner shell is axially divided into a rear end connecting portion and a heat dissipation section, the outer diameter of the rear end connecting portion is larger than the outer diameter of the heat dissipation section, the outer shell is fitted on the heat dissipation section, and the two ends of the outer shell respectively abut against the front end cover and the rear end connecting portion.

[0012] Preferably, the outer shell has arcuate ribs extending in the circumferential direction and linear ribs extending in the axial direction.

[0013] Preferably, an encoder and a shielding structure for hiding the encoder are provided on the outer side of the rear end cover.

[0014] The advantages of the utility model are:

[0015] 1. The servo drive and permanent magnet synchronous motor are integrated, with compact structure, small size and light weight;

[0016] 2. The casing adopts a liquid cooling structure to directly cool the driver and motor, resulting in low heat generation, good cooling effect and simple structure;

[0017] 3. The integrated operation of the driver and motor is highly efficient and has low energy consumption;

[0018] 4. The stator is directly cooled by the coolant in the casing. The coolant passes through the spiral heat dissipation channel and then is conducted to the driver power module through the heat sink for direct cooling. The overall cooling structure is simplified, the cooling is uniform, the temperature drops quickly, the operating efficiency is high, and the energy consumption is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a direct-drive integrated servo motor provided in this embodiment;

[0020] Figure 2 An exploded view of the direct-drive integrated control servo motor provided in this embodiment;

[0021] Figure 3 A cross-sectional view of the direct-drive integrated control servo motor provided in this embodiment. DETAILED DESCRIPTION

[0022] Combination Figures 1 to 3 The utility model is further described with respect to the direct-drive type drive-control integrated servo motor.

[0023] A direct-drive integrated servo motor is characterized by comprising a servo driver 2 and a permanent magnet synchronous motor 1.

[0024] The permanent magnet synchronous motor 1 includes a casing and a rotor 15 and a stator 14 arranged inside the casing. The casing includes a shell 11 and a front cover 16 and a rear cover 13 located at both ends of the shell 11. The shell 11 includes an inner shell 112 and an outer shell 111. A spiral heat dissipation channel 114 is provided between the inner shell 112 and the outer shell 111, and a heat dissipation plate 3 is provided on the outer surface of the outer shell 111. The servo driver 2 is arranged on the heat dissipation plate 3.

[0025] Specifically, the inner shell 112 , the outer shell 111 , the front cover 16 and the heat sink 3 are integrally formed by aluminum casting.

[0026] A spiral heat dissipation groove 1121 is provided on the outer wall of the inner shell 112, and the outer shell 111 is coaxially arranged outside the inner shell 112 to seal the spiral heat dissipation groove 1121, forming a spiral heat dissipation flow channel 114, so that the coolant flows in the circumferential and axial directions of the shell 11, taking away the heat generated by the permanent magnet synchronous motor 1 and the servo driver, thereby achieving an effective heat dissipation effect.

[0027] The lower surface of the heat sink 3 is an arc structure and fits with the outer wall of the shell 111, so that the lower surface of the heat sink 3 is effectively fitted with the shell 111, ensuring a large contact area and taking away the heat on the heat sink 3; the upper surface of the heat sink 3 is a planar structure for the installation of the servo driver 2. The planar structure can significantly improve the convenience of installing the servo driver 2 on the shell 11, and the installation structure is simple.

[0028] The thickness of the heat sink 3 gradually decreases from the left and right sides to the middle part. The power module 21 in the servo driver 2 corresponds to the middle part of the heat sink 3, which improves the efficiency of the coolant in removing heat from the power module 21.

[0029] The inner shell 112 is axially divided into a rear end connection portion 1122 and a heat dissipation section 1121. The outer diameter of the rear end connection portion 1122 is larger than the outer diameter of the heat dissipation section 1121, and the rear end cover 13 is fixed by bolts. The outer shell 111 is matched on the heat dissipation section 1121, and the two ends of the outer shell 111 are respectively against the front end cover 16 and the rear end connection portion 1122, forming an integrated structure, which can not only improve the aesthetics, but also ensure the sealing of the spiral heat dissipation channel 114.

[0030] The housing 111 is provided with a liquid inlet 1115 and a liquid outlet 1116 near both ends, so that the coolant in the spiral heat dissipation channel 114 is combined with the external coolant to form a loop, thereby improving the cooling effect.

[0031] The outer shell 111 has arcuate ribs 1112 extending in the circumferential direction and linear ribs 1111 extending in the axial direction. The arcuate ribs 1112 and the linear ribs 1111 can not only improve the structural strength of the outer shell 111, but also increase the contact area with the environment to enhance the heat dissipation effect.

[0032] In this embodiment, the rib is not provided at the position of the housing 111 corresponding to the heat sink 3 , so as to ensure effective contact between the heat sink 3 and the housing 111 .

[0033] The encoder 4 and a shielding structure for hiding the encoder 4 are fixed to the outside of the rear end cover 13 through a mounting frame. The shielding structure is a surrounding wall 141 formed on the outer side wall of the rear end cover 13 and a cover plate 142 covering the surrounding wall opening.

[0034] During use, the coolant in the spiral heat dissipation channel can take away the heat in the permanent magnet synchronous motor 1 and the heat in the servo driver 2, thereby having a heat dissipation effect on the servo motor 1 as a whole; secondly, this embodiment also has the characteristics of reducing installation space, compact structure, easy installation, and greatly reducing energy consumption, heat generation and operating noise.

[0035] Unless otherwise specified, in the present utility model, if there are terms such as "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicating orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or position relationship in the present utility model are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in conjunction with the drawings and according to specific circumstances.

[0036] Unless otherwise specified and limited, in the present invention, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A direct-drive integrated servo motor, characterized in that: Including servo drives and permanent magnet synchronous motors; The permanent magnet synchronous motor comprises a casing and a rotor and a stator arranged inside the casing, the casing comprises a shell and a front cover and a rear cover located at both ends of the shell, the shell comprises an inner shell and an outer shell, a spiral heat dissipation channel is provided between the inner shell and the outer shell, and a heat dissipation plate is provided on the outer surface of the outer shell; The servo driver is arranged on a heat sink.

2. The direct-drive integrated servo motor according to claim 1 is characterized in that: A spiral heat dissipation groove is provided on the outer side wall of the inner shell, and the outer shell is coaxially arranged outside the inner shell to seal the spiral heat dissipation groove to form a spiral heat dissipation flow channel.

3. The direct-drive integrated servo motor according to claim 1 is characterized in that: The lower surface of the heat sink is an arc structure and fits with the outer wall of the housing, and the upper surface is a plane structure for the installation of the servo drive.

4. The direct-drive integrated servo motor according to claim 3 is characterized in that: The thickness of the heat sink gradually decreases from the left and right sides to the middle part, and the power module in the servo driver corresponds to the middle part of the heat sink.

5. The direct-drive integrated servo motor according to claim 1 is characterized in that: The inner shell is axially divided into a rear end connection part and a heat dissipation section, the outer diameter of the rear end connection part is larger than the outer diameter of the heat dissipation section, the outer shell is fitted on the heat dissipation section, and the two ends of the outer shell are respectively against the front end cover and the rear end connection part.

6. The direct-drive integrated servo motor according to claim 1, characterized in that: The outer shell is provided with arc-shaped ribs extending in the circumferential direction and straight ribs extending in the axial direction.

7. The direct-drive integrated servo motor according to claim 1, characterized in that: An encoder and a shielding structure for hiding the encoder are arranged on the outer side of the rear end cover.

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