CN212627611U

CN212627611U - Asynchronous three-phase motor that suitability is strong

Info

Publication number: CN212627611U
Application number: CN202021587900.8U
Authority: CN
Inventors: 陈灵峰
Original assignee: Wuxi Lingde Electric Machinery Co ltd
Current assignee: Wuxi Lingde Electric Machinery Co ltd
Priority date: 2020-08-03
Filing date: 2020-08-03
Publication date: 2021-02-26
Anticipated expiration: 2030-08-03

Abstract

The utility model aims at providing an asynchronous three-phase motor with strong adaptability, which can meet the working environment of low rotating speed and high torque; the motor comprises a main shaft of a motor, a rotor, a stator, a casing and a connecting assembly, wherein the rotor, the stator and the casing are sequentially sleeved outwards by taking the central line of the main shaft as an axis; the connecting assembly comprises a bearing, a bearing sleeve and an end cover; the bearings are provided with two groups which are respectively arranged at two ends close to the main shaft; a bearing sleeve is arranged outside the bearing close to the front end of the main shaft; an end cover is arranged outside the bearing close to the rear end of the main shaft; the outer surface of the end cover is fixedly connected with the shell; the middle part of the stator protrudes to one side far away from the axial lead, and the outer surface of the protruding middle part is fixedly connected with the shell; the inner surface of the stator, which is in contact with the rotor, is a cambered surface; the outer surface of the shell is also provided with a junction box; the utility model has the advantages that: the device can meet the working environment with low rotating speed and high torque, and is suitable for high-power environment practicality such as lathe turning and milling.

Description

Asynchronous three-phase motor that suitability is strong

Technical Field

The utility model relates to the technical field of electric machines, especially, relate to a three asynchronous motors that suitability is strong.

Background

At present, a technology of integrating a machine tool spindle and a spindle motor into a whole appears in the field of numerical control machines, and the transmission structure form of the spindle motor and the machine tool spindle integrating two into one enables spindle parts to be relatively independent from a transmission system and an integral structure of the machine tool, so that the spindle parts can be made into a spindle unit, commonly called as an electric spindle, and are mainly applied to the following steps: digit control machine tool, electromechanical device, micro motor, pressure rotor.

The published Chinese utility model patent has the publication number: CN207977873U, patent name: a permanent magnet electric machine, the filing date: 20181016 which discloses a permanent magnet machine. This permanent-magnet machine includes: a ring-shaped stator structure and a ring-shaped rotor structure; the stator iron core is arranged on the annular surface close to the rotor structure, a plurality of stator modulation teeth, armature teeth and armature grooves are arranged along the circumferential direction, the stator modulation teeth, the armature grooves, the armature teeth and the other armature groove are circularly arranged in sequence, the first stator permanent magnets correspond to the armature teeth one by one and are positioned at one end, close to the rotor structure, of the armature teeth, and the first stator permanent magnets are magnetized along the radial direction; the second stator permanent magnet is positioned at the notch of the corresponding armature slot and is magnetized along the circumferential direction; the magnetizing directions of the second stator permanent magnets corresponding to the two adjacent armature grooves are opposite; the rotor core is provided with a plurality of rotor teeth and rotor slots at intervals along the circumferential direction on the annular surface close to the stator structure. The utility model discloses technical scheme directly driven load to break away from the intermediate transmission among the traditional transmission system.

The permanent magnet synchronous electric main shaft is a new technology which integrates a machine tool main shaft and a main shaft motor into a whole and appears in the field of numerical control machines. The electric spindle comprises the electric spindle and accessories thereof, and comprises the electric spindle, a high-frequency conversion device, an oil mist lubricator, a cooling device, a built-in encoder, a tool changer and the like. The rotor of the motor is directly used as the main shaft of the machine tool, the shell of the main shaft unit is the motor base, and the motor and the main shaft of the machine tool are integrated by matching with other parts. But its drawbacks are also evident: 1. the speed of the servo motor is lower than 1 ten thousand revolutions, the power is insufficient, and the requirement of low rotating speed and high power cannot be met; 2. the servo motor has high cost and difficult maintenance.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an asynchronous three phase machine that suitability is strong, can satisfy the operational environment of the high moment of torsion of low rotational speed.

The utility model provides an asynchronous three-phase motor with strong adaptability, which comprises a main shaft 1 of the motor, a rotor 5, a stator 4, a casing 3 and a connecting component, wherein the rotor 5, the stator 4 and the casing 3 are sequentially sleeved outwards by taking the central line of the main shaft 1 as an axis, and the connecting component is fixedly connected with the casing 3 and the main shaft 1;

the connecting assembly comprises a bearing 7, a bearing sleeve 2 and an end cover 6;

two groups of bearings 7 are arranged and are respectively arranged at two ends close to the main shaft 1; a bearing sleeve 2 is arranged outside a bearing 7 close to the front end of the main shaft 1, and the outer surface of the bearing sleeve 2 is fixedly connected with the shell 3; an end cover 6 is arranged outside the bearing 7 close to the rear end of the main shaft 1; the outer surface of the end cover 6 is fixedly connected with the shell 3;

the middle part of the stator 4 protrudes to one side far away from the axial lead, and the outer surface of the protruding middle part is fixedly connected with the shell 3; the inner surface of the stator 4, which is in contact with the rotor 5, is a cambered surface;

the outer surface of the casing 3 is also provided with a junction box 8.

Preferably, a shaft shoulder 11 is further arranged at one end of the main shaft 1, which is provided with the bearing sleeve 2, and two holes are symmetrically arranged on the shaft shoulder 11.

Preferably, a thermal protection 9 is also arranged in the junction box 8.

Preferably, the junction box 8 is further provided with an outlet 10.

The utility model has the advantages that: the device can meet the working environment with low rotating speed and high torque, and is suitable for high-power environment practicality such as lathe turning and milling. In addition, the built-in thermal protection and the external junction box effectively improve the sealing performance and the use safety of the electric spindle 1. The asynchronous motor is matched with an advanced encoder technology, so that the accuracy and the durability of the electric spindle 1 are effectively improved, and the use cost and the maintenance cost of the electric spindle 1 are further reduced. Compared with a permanent magnet synchronous motor, the asynchronous motor has the advantages of better stability and small heat emission.

Drawings

FIG. 1 is a schematic view of the internal structure of the present invention;

FIG. 2 is a schematic view of the external structure of the present invention;

in the figure, the position of the upper end of the main shaft,

1. a main shaft 11, a shaft shoulder; 2. a bearing housing; 3. a housing; 4. a stator; 5. a rotor; 6. an end cap; 7. a bearing; 8. a junction box; 9. thermal protection; 10. and (6) an outlet.

Detailed Description

The present invention will now be described in detail with reference to the drawings, which are provided for illustrative and explanatory purposes only and should not be construed as limiting the scope of the present invention in any way.

two groups of bearings 7 are arranged and are respectively arranged at two ends close to the main shaft 1; a bearing sleeve 2 is arranged outside a bearing 7 close to the front end of the main shaft 1, the outer surface of the bearing sleeve 2 is fixedly connected with the shell 3, and the bearing sleeve 2 is arranged to increase the gap between the coil and the bearing sleeve; an end cover 6 is arranged outside the bearing 7 close to the rear end of the main shaft 1; the outer surface of the end cover 6 is fixedly connected with the shell 3;

the middle part of the stator 4 protrudes to one side far away from the axial lead, and the outer surface of the protruding middle part is fixedly connected with the shell 3; the inner surface of the stator 4, which is in contact with the rotor 5, is a cambered surface; the stator 4 is arranged in a structure that the groove shape of the stator is suitable for 100Hz, and the coil is provided with overheat protection; the rotor 5 is fitted with the stator 4.

The outer surface of the casing 3 is also provided with a junction box 8.

In this embodiment, preferably, a shaft shoulder 11 is further disposed at one end of the main shaft 1, where the bearing sleeve 2 is disposed, and two holes are symmetrically disposed on the shaft shoulder 11. Set up secondary structure, the convenient dismantlement installation.

In this embodiment, preferably, a thermal protector 9 is further disposed in the junction box 8.

In this embodiment, preferably, the junction box 8 is further provided with an outlet 10. The position of the outlet 10 can be adjusted and can also be present above the housing 3 and at the end cover 6.

It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The above-mentioned embodiments of the present invention do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An asynchronous three-phase motor with strong adaptability comprises a main shaft (1) of the motor, a rotor (5), a stator (4), a casing (3) and a connecting assembly, wherein the rotor (5), the stator (4) and the casing (3) are sequentially sleeved outwards by taking the central line of the main shaft (1) as an axis, and the connecting assembly is fixedly connected with the casing (3) and the main shaft (1);

it is characterized in that the preparation method is characterized in that,

the connecting assembly comprises a bearing (7), a bearing sleeve (2) and an end cover (6);

two groups of bearings (7) are arranged and are respectively arranged at two ends close to the main shaft (1); a bearing sleeve (2) is arranged outside a bearing (7) close to the front end of the main shaft (1), and the outer surface of the bearing sleeve (2) is fixedly connected with the shell (3); an end cover (6) is arranged outside the bearing (7) close to the rear end of the main shaft (1); the outer surface of the end cover (6) is fixedly connected with the shell (3);

the middle part of the stator (4) protrudes to one side far away from the axial lead, and the outer surface of the protruding middle part is fixedly connected with the shell (3); the inner surface of the stator (4) in contact with the rotor (5) is a cambered surface;

the outer surface of the machine shell (3) is also provided with a junction box (8).

2. The asynchronous three-phase motor with strong adaptability according to claim 1 is characterized in that a shaft shoulder (11) is further arranged at one end of the main shaft (1) provided with the bearing sleeve (2), and two holes are symmetrically arranged on the shaft shoulder (11).

3. Asynchronous, three-phase electrical machine with high suitability according to claim 2, characterised in that a thermal protection (9) is also arranged in the terminal box (8).

4. A highly adaptable asynchronous three-phase motor according to claim 3, characterised in that the junction box (8) is also provided with outlets (10).