CN108614211B - General type testing arrangement for preventing sub-package permanent magnet torque motor stator and rotor collision - Google Patents
General type testing arrangement for preventing sub-package permanent magnet torque motor stator and rotor collision Download PDFInfo
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- CN108614211B CN108614211B CN201810287428.7A CN201810287428A CN108614211B CN 108614211 B CN108614211 B CN 108614211B CN 201810287428 A CN201810287428 A CN 201810287428A CN 108614211 B CN108614211 B CN 108614211B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
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Abstract
The invention discloses a universal testing device for preventing collision of a stator and a rotor of a split charging type permanent magnet torque motor, which comprises a stator base, a base end cover, a rotating shaft, a base, a double-bearing assembly, a stator switching support and a rotor switching support, wherein the stator base is a revolving body, the base is connected to one end of the stator base, a bearing mounting hole and a stator switching support mounting hole are respectively formed by taking the axis of the stator base as the center, the diameters of the two holes are different, the double-bearing assembly is arranged in the bearing mounting hole, and stators with different excircle sizes are connected with the stator switching support and are arranged in the stator switching support mounting hole; rotors with different inner hole sizes are connected with the rotor support and are arranged on the rotating shaft. According to the invention, through rotating the base, the radial and axial positions of the rotating shaft and the double-bearing assembly are controllable, collision between the motor stator and the rotor caused by magnetic pull is prevented, play between the rotating shaft and the bearing is effectively inhibited, so that the stator and the rotor are convenient to assemble during motor testing, and the stator and rotor assembling requirements are met.
Description
Technical Field
The invention relates to a general testing device for preventing collision of a stator and a rotor of a split-charging permanent magnet torque motor, belonging to the technical field of motor testing.
Background
With the continuous development of permanent magnet materials, permanent magnet motors are entering a large development period, and permanent magnet motors with various new structures and new principles are continuously emerging. The direct-drive split charging type permanent magnet torque motor is rapidly developed in recent years, the motor is directly connected to a load without gear reduction, zero transmission is realized, and the problems of elastic hysteresis deformation, reverse clearance, vibration noise, response hysteresis and the like are eliminated to the maximum extent. Direct drive technology is a trend for future development.
The split-type direct-drive torque motor is composed of a stator and a rotor, and belongs to a split-type structure. Therefore, the stator and the rotor need to be installed in the tool during the motor performance test. The tool ensures the assembly precision of the stator and the rotor and also ensures that the appearance of the motor is not damaged. In order to meet the miniaturization target of the aerospace motor, the torque density of the motor is improved by selecting high-performance permanent magnet materials and designing a stator and a rotor with small air gaps. When the motor is assembled, the electromagnetic force between the stator and the rotor is very strong, and collision is easy to occur; during disassembly, the rotor is difficult to remove from the tooling. The technical difficulty in the assembling process of the split-type torque motor is solved. In addition, in order to meet different application requirements, the split direct-drive torque motor of the same type can be derived into various specifications by adjusting the axial length of the iron core or the outer diameter of the stator. If a frock is designed for each specification motor, this will increase research and development cost, extension development cycle, be unfavorable for the development in the customized product short time. Therefore, it is very necessary to design a general-purpose testing tool in the testing process of the motor.
Disclosure of Invention
The technical problem of the invention is solved: for overcoming the deficiency of prior art, provide the general type testing arrangement who prevents the collision of partial shipment formula permanent magnet torque motor stator and rotor to in solving current test technique, the stator and rotor assembly easily collides, difficult dismantlement, the poor problem of commonality.
The technical solution of the invention is as follows:
a universal testing device for preventing the collision of stator and rotor of split-charging permanent-magnet torque motor is composed of stator base, end cover of base, rotary axle, base, dual-bearing assembly, stator switching supporter and rotor switching supporter,
the stator base is a revolving body, the base is connected with one end of the stator base, a bearing mounting hole and a stator switching support mounting hole are respectively formed in the central shaft of the stator base, the bore diameters of the bearing mounting hole and the stator switching support mounting hole are different, the double bearing assembly is mounted in the bearing mounting hole, and the stator switching supports provided with stators with different sizes are mounted in the stator switching support mounting hole; the rotor switching supports provided with rotors of different sizes are connected to the rotating shaft.
One end of the rotating shaft initially extends into a bearing hole of the double-bearing assembly, and when the rotating shaft is contacted with the base, the rotor and the stator have no suction force, and the rotating shaft does not deflect.
And adjusting the base, wherein the rotating shaft continuously extends into the base, the rotor and the stator generate suction force until the bearing retaining shoulder of the rotating shaft is attached to the bearing, and the rotor and the stator are centered.
The base is separated, and the bearing hole on the end cover of the base is sleeved in the rotating shaft and is fixedly connected with the stator base.
The double-bearing assembly comprises two bearings, and the distance between the two bearings is more than half of the aperture of the bearing mounting hole.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the invention, through the matching of the base, the rotating shaft and the stator base and through the threaded connection between the base and the stator base, the base is rotated, so that the rotating shaft cannot impact a bearing assembly, the electromagnetic suction between the stator and the rotor is overcome, the play between the rotating shaft and the bearing is effectively inhibited, and the coaxiality between the stator and the rotor is ensured;
(2) the traditional stator base and the motor are uniquely assembled according to specifications, the stator base and the rotating shaft have universality, and the different adapter flanges are matched with the stator base and the rotating shaft, so that the motors with different specifications can be conveniently assembled, and the cost is greatly reduced.
Drawings
FIG. 1 is an assembly view of the split motor testing apparatus of the present invention;
FIG. 2 is a diagram of a conventional split motor testing apparatus;
FIG. 3 is a stator base of the split motor testing apparatus of the present invention;
FIG. 4 is a schematic structural diagram of a stator base assembly of the split motor testing apparatus according to the present invention;
FIG. 5 is a stator switching base of the split motor testing apparatus of the present invention;
FIG. 6 is a schematic view of a stator base assembly of the assembled stator of the present invention;
FIG. 7 is a schematic view of a rotor assembly of the present invention;
FIG. 8 is an assembly diagram of the split motor testing apparatus of the present invention after being detached from the base.
Detailed Description
The present invention is described in further detail below with reference to the attached drawings.
Fig. 2 is a conventional split motor testing apparatus. The device mainly comprises a stator base 101, a base end cover 201, a rotating shaft 301 and a stator compression ring 601, and comprises a front bearing, a rear bearing, a locking screw and the like. The assembly sequence is that the bearing is firstly placed in a bearing hole of the stator base; the split-type motor stator is arranged on the stator base 101, and a stator pressure ring 601 is placed and fastened by screws; fixing the split-type motor rotor on a rotating shaft, and installing a rotor assembly into the stator base 101; and finally, installing a base end cover and locking the base end cover by using a screw. When the motor is assembled, the magnetic tension between the stator and the rotor is very strong, collision is easy to occur, and the rotating shaft also collides with the bearing when falling.
In order to overcome the technical problems, the invention newly develops a universal testing device for preventing the collision of the stator and the rotor of the split-type torque motor, as shown in fig. 1 and 8, which comprises a stator base 1, a base end cover 2, a rotating shaft 3, a base 7, a double-bearing assembly 8, a stator switching support 10 and a rotor switching support 11,
the stator base 1 is a revolving body, the base 7 is connected with one end of the stator base 1, bearing mounting holes and stator switching support mounting holes with different apertures are respectively formed on the central shaft of the stator base 1, the double bearing assembly 8 is mounted in the bearing mounting holes, and the stator switching supports 10 provided with stators with different sizes are mounted in the stator switching support mounting holes; rotor switching supports 11 provided with rotors of different sizes are connected to the rotating shaft 3;
one end of the rotating shaft 3 extends into a bearing hole of the double-bearing assembly, when the rotating shaft is contacted with the base 7, the rotor and the stator have no attraction force, and the rotating shaft 3 does not deflect; and adjusting the base 7, continuously extending the rotating shaft 3, generating suction force between the rotor and the stator until the bearing position of the rotating shaft 3 is attached to the bearing, aligning the rotor and the stator, separating from the base 7, and sleeving the rotating shaft 3 into a bearing hole on the base end cover 2 and fixedly connecting the rotating shaft with the stator base 1. The double bearing assembly 8 comprises two bearings, and the distance between the two bearings is more than half of the aperture of the bearing mounting hole.
Fig. 3 is a stator base of the split motor testing apparatus of the present invention. 15 is the cavity inner ring in this stator base 1, is provided with the internal thread for cooperate with base 7, controllable slow lift when realizing the pivot assembly. In the stator base 1, 12 is a bearing outer hole, 13 is a bearing assembly gland groove, and 14 is a mounting and positioning surface of a split-type motor stator adapter flange.
Fig. 4 is a schematic structural diagram of a stator base assembly of the split motor testing apparatus of the present invention. And 8, the double-bearing assembly overcomes the electromagnetic suction force between the stator and the rotor, inhibits the play between the rotating shaft and the bearing and ensures the coaxiality between the stator and the rotor. And 9, a bearing gland for protecting the bearing from being impacted. And 10, a stator switching base is used for adapting the stators of motors with different specifications.
Fig. 5 is a stator adapter of the split motor testing apparatus according to the present invention. The spigot of the bore D1 is used to ensure concentricity of the stator. Through changing switching base hole D1 and axial length L, can assemble the stator of different multiple specification motors, realize the universalization of different specification stators.
Fig. 6 is a schematic structural view of a stator base assembly for assembling a stator according to the present invention. The stator 4 of the split charging type motor is positioned through the spigot and is fastened by a stator pressure ring 6 through screws.
Fig. 7 is a schematic structural view of a rotor assembly of the present invention. The rotor 5 of the split motor is fixed on the rotor switching base 11 and is fastened by screws. And finally, assembled on the rotating shaft 3.
Fig. 8 is an assembly diagram of the split-type motor testing device after being separated from the base, the split-type motor testing device is separated from the base 7, and the rotating shaft 3 is sleeved in a bearing hole on the end cover 2 of the base and is fixedly connected with the stator base 1.
According to the invention, through the matching of the base, the rotating shaft and the stator base and the rotation of the base, the rotating shaft cannot impact the bearing assembly, the electromagnetic attraction between the stator and the rotor is overcome, the play between the rotating shaft and the bearing is effectively inhibited, and the coaxiality between the stator and the rotor is ensured.
The invention has not been described in detail in part of the common general knowledge of those skilled in the art. The specific embodiments described are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (2)
1. A general testing device for preventing collision of a stator and a rotor of a split-charging permanent magnet torque motor is characterized by comprising a stator base (1), a base end cover (2), a rotating shaft (3), a base (7), a double-bearing assembly (8), a stator switching support (10) and a rotor switching support (11),
the stator base (1) is a revolving body, the base (7) is connected to one end of the stator base (1), a bearing mounting hole and a stator switching support mounting hole are respectively formed by taking the axis of the stator base (1) as the center, the diameters of the bearing mounting hole and the stator switching support mounting hole are different, the double bearing assembly (8) is mounted in the bearing mounting hole, and stators with different excircle sizes are connected with the stator switching support (10) and mounted in the stator switching support mounting hole; rotors with different inner hole sizes are connected with the rotor switching support (11) and are arranged on the rotating shaft (3);
the lower end of the rotating shaft (3) extends into a bearing hole of the double-bearing assembly (8), when the rotating shaft is contacted with the base (7), the rotor and the stator have no attraction force, and the rotating shaft (3) does not deflect;
the base (7) is in threaded connection with the stator base (1), the base is rotated to enable the rotating shaft (3) to continue to extend, the rotor and the stator generate attraction force until the bearing retaining shoulder of the rotating shaft (3) is attached to the bearing, and the rotor and the stator are centered;
the base (7) is screwed out through threads, and the rotating shaft (3) is sleeved in a bearing hole in the base end cover (2) and is fixedly connected with the stator base (1).
2. The universal testing device for preventing the stator and the rotor of the split permanent magnet torque motor from colliding as recited in claim 1, wherein the double bearing assembly (8) comprises two bearings, and the distance between the two bearings is more than half of the aperture of the bearing mounting hole.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810287428.7A CN108614211B (en) | 2018-03-30 | 2018-03-30 | General type testing arrangement for preventing sub-package permanent magnet torque motor stator and rotor collision |
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| CN201810287428.7A CN108614211B (en) | 2018-03-30 | 2018-03-30 | General type testing arrangement for preventing sub-package permanent magnet torque motor stator and rotor collision |
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| CN108614211B true CN108614211B (en) | 2020-10-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114123678B (en) * | 2021-11-01 | 2023-03-03 | 西安航天精密机电研究所 | High-reliability universal assembly testing device and method for split-type torque motor |
| CN114142648B (en) * | 2021-12-07 | 2023-09-15 | 江苏集萃智能制造技术研究所有限公司 | Frameless torque motor and testing method thereof |
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| CN201298048Y (en) * | 2008-11-28 | 2009-08-26 | 珠海格力电器股份有限公司 | Compressor Motor Test Fixture |
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