CN210093059U - A hollow direct-drive motor with an encoder moving out - Google Patents

Abstract

The utility model discloses a hollow direct-drive motor with a movable coder, which comprises a gland, a machine base, a stator, a rotor, a first support bearing, a driving wheel, a second support bearing, a coder, a bearing seat, a deep groove ball bearing, a driven wheel, a synchronous belt, a coil and a magnet, wherein one end of the rotor is arranged in the gland through the first support bearing, the other end of the rotor is arranged in the machine base through the second support bearing, the driving wheel is arranged at the tail end of the rotor, the gland is arranged on the machine base, the coil is wound on the stator, the stator is adhered in the machine base, the magnet is adhered on the rotor, the coder is arranged on the bearing seat, the driven wheel is arranged in the bearing seat through the deep groove ball bearing, the driven wheel is connected with the shaft of the coder, the driving wheel is meshed with the driven wheel through the synchronous belt, a conventional shaft-type, the cost performance is very high.

Description

A hollow direct-drive motor with an encoder moving out

technical field

The utility model relates to a motor, in particular to a hollow direct-drive motor of an encoder removal type.

Background technique

The direct drive motor has the characteristics of large output torque, high precision and maintenance-free. It is widely used in automation equipment and industrial robots. The structure of most direct drive motors adopts the structure design of the encoder and the rotor directly connected. higher. However, hollow encoders are usually more expensive, so the design cost is inevitably relatively high. In some occasions where the accuracy requirements are not very high, especially the combined structure of servo motors and reducers, there is no cost-effective advantage.

SUMMARY OF THE INVENTION

The technical problem to be solved by the utility model is a hollow direct-drive motor with a removable encoder, which adopts a conventional shaft-out encoder, and is connected to the hollow rotor through a belt to realize a hollow structure, and the cost performance is very high.

The utility model is realized by the following technical solutions: an encoder removal type hollow direct drive motor, which is characterized in that it comprises a gland, a machine base, a stator, a rotor, a first support bearing, a driving wheel, and a second support It consists of bearing, encoder, bearing seat, deep groove ball bearing, driven wheel, timing belt, coil and magnet. One end of the rotor is installed in the gland through the first support bearing, and the other end of the rotor is installed in the machine through the second support bearing. In the base, the end of the rotor is installed with a driving wheel, the gland 1 is installed on the base; the coil is wound on the stator, the stator is pasted in the base, the magnet is mounted on the rotor, the encoder is installed on the bearing seat, and the driven wheel It is installed in the bearing seat through the deep groove ball bearing and is connected with the shaft of the encoder. The driving wheel and the driven wheel are meshed together through the synchronous belt.

As a preferred technical solution, there are a total of 24 coils, which constitute UVW three-phase, and are connected in a star-shaped manner. There are a total of 20 magnets, which are magnetically mounted on the rotor alternately to form a 24-slot 20-pole motor structure.

As a preferred technical solution, both the encoder and the driven wheel are installed on a bearing seat, the bearing seat is installed in the machine seat, and the synchronous belt is tensioned by adjusting the relative positions of the bearing seat and the machine seat.

As a preferred technical solution, both the rotor and the driving wheel are hollow structures.

As a preferred technical solution, the first support bearing and the second support support use deep groove ball bearings, or use angular contact bearings or crossed roller bearings.

As a preferred technical solution, the driving wheel and the driven wheel have the same tooth shape and the same number of teeth. When the rotor rotates at an angle, the shaft of the encoder also rotates correspondingly, and there is a 1:1 transmission relationship between them. .

The beneficial effects of the utility model are as follows: the utility model adopts the conventional shaft-out encoder, which is connected to the hollow rotor through the synchronous belt to realize the hollow structure, and has the characteristics of high precision, low cost and convenient wire passing.

Description of drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are just some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

Fig. 1 is the main sectional view of the utility model;

Fig. 2 is the top sectional view of the utility model;

In the figure: 1, gland, 2, machine base, 3, stator, 4, rotor, 5, first support bearing, 6, driving wheel, 7, second support bearing, 8, encoder, 9, bearing seat, 10, deep groove ball bearing, 11, driven wheel, 12, timing belt, 13, coil, 14, magnet.

Detailed ways

All features disclosed in this specification, or all disclosed steps in a method or process, may be combined in any way except mutually exclusive features and/or steps.

Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), unless expressly stated otherwise, may be replaced by other equivalent or alternative features serving a similar purpose. That is, unless expressly stated otherwise, each feature is but one example of a series of equivalent or similar features.

In the description of the present invention, it should be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "central", "end" The orientation or positional relationship indicated by "portion", "length", "outer end", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated A device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In addition, in the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

Terms such as "upper", "above", "lower", "below" and the like used in the present invention to indicate relative positions in space are for the purpose of explanation to describe the relative position of a unit or feature as shown in the drawings relative to A relationship to another unit or feature. The term spatially relative position may be intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In the present invention, unless otherwise expressly specified and limited, terms such as "arrangement", "socket connection", "connection", "penetration", "plug connection" and other terms should be understood in a broad sense, for example, it may be a fixed connection , it can be detachable connection or integrated; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the mutual connection of two elements relationship, unless otherwise expressly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

As shown in Figures 1 and 2, the present utility model consists of a gland 1, a machine base 2, a stator 3, a rotor 4, a first support bearing 5, a driving wheel 6, a second support bearing 7, an encoder 8, and a bearing seat 9 , deep groove ball bearing 10, driven wheel 11, timing belt 12, coil 13, magnet 14, one end of the rotor 4 is installed in the gland 1 through the first support bearing 5, and the other end of the rotor 4 through the second support bearing 7 Installed in the frame 2, the end of the rotor 4 is installed with a driving wheel 6, the gland 1 is installed on the frame 2; the coil 13 is wound on the stator 3, and the stator 3 is pasted in the frame 1; The magnet 14 is attached to the rotor 4; the encoder 8 is installed on the bearing seat 9, the driven wheel 11 is installed in the bearing seat 9 through the deep groove ball bearing 10, and is connected with the shaft of the encoder 8; the driving wheel 6 and the driven wheel 11 pass through the synchronous belt 12 mesh together.

There are 24 coils 13 in total, which constitute three-phase UVW, and they are connected in a star-shaped manner. There are 20 magnets 14 in total, which are magnetically mounted on the rotor alternately. They constitute a 24-slot 20-pole motor structure.

Both the encoder 8 and the driven wheel 11 are installed on the bearing seat 9, and the bearing seat 9 is installed in the machine seat 2. By adjusting the relative position of the bearing seat 9 and the machine seat 2, the synchronous belt 12 can be tensioned.

The rotor 4 is a hollow structure, and the driving wheel 11 is also a hollow structure, which can easily pass through the trachea or electric wire.

The first support bearing 5 and the second support support 7 are preferably deep groove ball bearings, or angular contact bearings or crossed roller bearings. The purpose of using deep groove ball bearings in the present invention is to reduce costs.

Furthermore, the driving wheel 6 and the driven wheel 11 are synchronous pulleys with the same tooth shape and the same number of teeth. Therefore, when the rotor 4 rotates a certain angle, the shaft of the encoder 8 also rotates a certain angle correspondingly. There is a 1-to-1 transfer relationship between them.

The above are only specific embodiments of the present utility model, but the protection scope of the present utility model is not limited to this, and any changes or replacements that are not thought of through creative work should be included within the protection scope of the present utility model. . Therefore, the protection scope of the present invention should be based on the protection scope defined by the claims.

Claims (6)

1. An encoder removal type hollow direct drive motor is characterized in that: comprising a gland, a frame, a stator, a rotor, a first support bearing, a driving wheel, a second support bearing, an encoder, a bearing seat, a deep groove It consists of ball bearings, driven wheels, timing belts, coils and magnets. One end of the rotor is installed in the gland through the first support bearing, the other end of the rotor is installed in the base through the second support bearing, and the end of the rotor is installed with a driving wheel , the gland is installed on the frame, the coil is wound on the stator, the stator is pasted in the frame, the magnet is pasted on the rotor, the encoder is installed on the bearing seat, the driven wheel is installed in the bearing seat through the deep groove ball bearing, Connected with the shaft of the encoder, the driving wheel and the driven wheel are meshed together through a synchronous belt. 2. The encoder removal type hollow direct drive motor according to claim 1, characterized in that: there are 24 said coils in total, constituting UVW three-phase, and adopting a star connection method, a total of 20 magnets, magnetically alternating. Mounted on the rotor to form a 24-slot 20-pole motor structure. 3. The encoder removal type hollow direct drive motor according to claim 1, wherein the encoder and the driven wheel are both installed on the bearing seat, the bearing seat is installed in the machine seat, and the bearing seat is adjusted to The relative position of the machine base realizes the tension of the synchronous belt. 4 . The encoder removal type hollow direct drive motor according to claim 1 , wherein the rotor and the driving wheel are both hollow structures. 5 . 5 . The encoder removal type hollow direct drive motor according to claim 1 , wherein the first support bearing and the second support support adopt deep groove ball bearings, or adopt angular contact bearings or crossed rollers. 6 . bearing. 6. The encoder removal type hollow direct drive motor according to claim 1, characterized in that: the driving wheel and the driven wheel have the same tooth shape and the same number of teeth as the synchronous pulley, when the rotor rotates at an angle, the encoder The shaft also rotates correspondingly, and there is a 1-to-1 transmission relationship between them.

Images