CN109378955B - Permanent magnet motor rotor assembly fixture - Google Patents
Permanent magnet motor rotor assembly fixture Download PDFInfo
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- CN109378955B CN109378955B CN201811584865.1A CN201811584865A CN109378955B CN 109378955 B CN109378955 B CN 109378955B CN 201811584865 A CN201811584865 A CN 201811584865A CN 109378955 B CN109378955 B CN 109378955B
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- rotor
- lead screw
- permanent magnet
- stator
- magnet motor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/16—Centering rotors within the stator; Balancing rotors
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- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention relates to the field of motor part assembly, and particularly discloses a permanent magnet motor rotor assembly fixture which comprises an upper shell fixedly connected with a stator, wherein an opening at the bottom of the upper shell is arranged, a lead screw rotatably connected to the bottom end of the upper shell is arranged below the stator, the diameter of one end of the lead screw is larger than that of the other end of the lead screw, a fixed base is in threaded connection with the lead screw, a fixing mechanism for fixing a rotor to be assembled is fixedly connected onto the fixed base, an inner diameter adjusting mechanism is arranged in the fixed base, and a driving limiting assembly for driving the inner diameter adjusting mechanism is fixedly connected to the inner wall of the upper. The invention drives the rotor to gradually move towards the direction close to the stator by the movement of the screw rod, thereby avoiding the problem that the assembly is influenced by collision with the stator or adsorption at the bottom of the stator under the magnetic adsorption effect of the magnetic steel on the surface of the rotor when the rotor is directly assembled.
Description
Technical Field
The invention relates to the field of motor part assembly, in particular to a permanent magnet motor rotor assembly tool.
Background
At present, with the rapid development of the automobile industry and the increasing exhaustion of global petroleum resources, electric automobiles are widely pursued by the public in recent years. The permanent magnet motor is gradually becoming a driving system of an electric automobile by virtue of advantages and characteristics, and the development is also rapid in recent years.
The permanent magnet motor is also called a permanent magnet synchronous motor, a permanent magnet structure (generally referred to as magnetic steel) is generally used on a motor rotor, and due to the existence of the magnetic steel, a large magnetic pulling force exists between the rotor and the stator, so that the rotor and the stator collide under the action of the magnetic pulling force in the assembling process or are adsorbed mutually after the assembling is finished, and the assembling difficulty is increased. At present, for the assembly of a permanent magnet motor rotor, a specific assembly machine tool is generally adopted in the prior art, and although the machine tools in the prior art can fix the rotor to achieve stable assembly of the rotor and the stator, the machine tools are large in size, inconvenient to move, high in equipment investment, inconvenient to operate and inconvenient to observe the assembly degree of the rotor and the stator manually during installation.
Disclosure of Invention
The invention aims to provide a permanent magnet motor rotor assembly tool, which can automatically determine an assembly terminal point while achieving stable installation of a rotor and a stator.
In order to achieve the purpose, the technical scheme of the invention is as follows: permanent-magnet machine rotor assembly fixture, include with stator fixed connection's last casing, the bottom opening of going up the casing sets up, the below of stator is equipped with the lead screw of rotating the connection in last casing bottom, the diameter of lead screw one end is greater than the diameter of the lead screw other end, threaded connection has unable adjustment base on the lead screw, and the rigid coupling has the fixed establishment who is used for the fixed rotor that waits to assemble on the unable adjustment base, is equipped with internal diameter adjustment mechanism in the unable adjustment base, the inner wall rigid coupling of going up the casing has the spacing subassembly of drive that is used for driving internal diameter.
The principle and the beneficial effects of the technical scheme are as follows: this technical scheme goes up the casing and is used for fixing and protection stator, for the stator provides accommodation space, the bottom opening of going up the casing sets up to the lead screw provides the rotation installation site. The fixing mechanism is used for fixing a rotor to be installed, the lead screw is used for driving the rotor to be assembled to move, specifically, the lead screw rotates to drive the fixing base in threaded connection with the lead screw to move axially along the lead screw, and then the fixing mechanism fixedly connected to the fixing base and the rotor fixed in the fixing mechanism are driven to move axially along the lead screw, so that the rotor moves relative to the stator, and the rotor is assembled. The rotor is driven to move towards the direction close to the stator gradually through the lead screw, and when the rotor is prevented from being directly assembled, the rotor collides with the stator or is adsorbed at the bottom of the stator under the magnetic adsorption effect of the magnetic steel on the surface of the rotor, so that the assembly is influenced.
Because the diameter of lead screw one end is greater than the diameter of the lead screw other end, lead screw axial diameter crescent promptly for the rotor is along the lead screw to the in-process that the stator removed, the height of rotor risees gradually, makes the vertical distance between rotor and the stator reduce gradually, makes the rotor when removing under the stator, and the distance between rotor and the stator is minimum, makes things convenient for the assembly of rotor. The inner diameter adjusting mechanism is used for adjusting the inner diameter of the fixed base, so that the fixed base always keeps a threaded connection state with the lead screw with the diameter gradually increased in the process of moving along the axial direction of the lead screw, and the connection stability of equipment is ensured. The spacing subassembly of drive is used for driving internal diameter adjustment mechanism on the one hand, and on the other hand is used for injecing unable adjustment base's removal stroke, conveniently judges unable adjustment base's removal terminal point, can realize the automatic judgement, convenient operation of the terminal point of rotor assembly promptly.
Furthermore, the bottom end of the upper shell is rotatably connected with a lower shell with an upper opening, and a connecting piece is detachably connected between the upper shell and the lower shell.
When the lower shell and the upper shell are buckled, a closed state is formed for protecting the rotor and the stator inside, the lower shell is arranged to rotate relative to the upper shell, and the lead screw is convenient to assemble.
Further, the fixing mechanism comprises a fixing frame fixedly connected to the upper end of the fixing base, and the bottom of the fixing frame is fixedly connected with an electromagnet capable of adsorbing the rotor.
The fixed frame is used for accommodating a rotor to be assembled, and the electromagnet is used for adsorbing and fixing the rotor before the rotor is assembled, so that the stability of fixing the rotor is ensured.
Furthermore, the drive limiting assembly comprises an air box fixedly connected to the inner wall of the upper shell, a piston is connected in the air box in a sealing and sliding mode, a pull rod is hinged to the piston, and one end, far away from the piston, of the pull rod is hinged to the outer wall of the fixing frame.
When the fixing frame moves along the axial direction of the screw rod along the fixing base, the pull rod hinged with the fixing frame can be driven to move, the piston can slide along the inner wall of the gas box, when the piston moves to the end part of the gas box, the gas box can block the movement of the piston, the piston can not move continuously, the stroke end point of the piston is reached, the piston can have reverse acting force on the pull rod and the fixing frame at the moment, the fixing frame can not move continuously along the axial direction of the screw rod, namely, the stroke end point of the fixing frame is reached simultaneously, the rotor can be judged to move in place, the electromagnet can be closed, the rotor is assembled in an inner hole of the stator, and the rotor is assembled in.
Further, the inner diameter adjusting mechanism comprises an annular air bag which is connected to the inner wall of the fixed base in a sliding mode, a guide pipe is communicated between the annular air bag and the air box, a plurality of supporting pieces are evenly distributed on the inner side of the annular air bag in the circumferential direction, fixed cylinders are fixedly connected to the supporting pieces, threads which can be meshed with the screw rod are arranged on one side face, away from the supporting pieces, of each fixed cylinder, and arc-shaped rods are connected between every two adjacent fixed cylinders in a sliding mode.
When unable adjustment base along lead screw axial displacement, the diameter of lead screw crescent, at this moment, unable adjustment base removes and drives fixed frame and remove, fixed frame passes through the pull rod and drives the piston and remove at the gas tank inner wall, make the pressure in the gas tank reduce, gas in the cyclic annular gasbag flows to the gas tank along the pipe under the effect of gas tank internal negative pressure this moment, make gas in the cyclic annular gasbag reduce, make the solid fixed cylinder move to one side of keeping away from the lead screw under the inside extrusion of lead screw, the arc pole can slide along the solid fixed cylinder this moment, make the distance between the solid fixed cylinder increase, the internal diameter increase that the solid fixed cylinder inner wall encloses, continue to keep the meshing state with the lead screw, guarantee the stable connection of equipment.
Furthermore, the both ends of arc pole are located inside two adjacent fixed cylinders respectively, and the equal rigid coupling in both ends of arc pole has the stopper.
The limiting block at the end part of the arc ejector rod has the function of limiting the moving stroke of the arc rod, so that the arc rod is prevented from falling off from the inside of the fixed cylinder, and the stable connection between the devices is further ensured.
Further, a protective layer is arranged on the surface of the annular air bag.
The protective layer on the surface of the annular air bag has the function of protecting the annular air bag, so that the annular air bag is prevented from being damaged, and the service life of the annular air bag is prolonged.
Furthermore, a stop block is arranged on the screw rod.
The stop block on the screw rod has the function of assisting in limiting the moving distance of the fixed base, so that the fixed base reaches a forming end point when moving to a position, under the stator, of the rotor, the stop block has the function of assisting in centering, and the assembly precision of the rotor is improved.
Further, the bottom of the lower shell is fixedly connected with a hanging ring.
The lifting ring is used for lifting other equipment to be connected, and is convenient for connection among the equipment.
Drawings
FIG. 1 is a longitudinal cross-sectional view of an upper housing in an embodiment of the present invention;
fig. 2 is a right side view of the stationary base of fig. 1.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a stator 1, an upper shell 2, a screw rod 3, a lower shell 4, a fixed frame 5, an air box 6, a piston 7, a pull rod 8, an annular air bag 9, a guide pipe 10, a fixed cylinder 11, an arc-shaped rod 12, a stop block 13, a limiting block 14, a hanging ring 15, a rotary table 16, a handle 17, a fixed base 18 and a rotor 19.
The embodiment is basically as shown in the attached figure 1: permanent-magnet machine rotor assembly fixture, including lower part open-ended last casing 2, go up 2 internal fixed mounting of casing have stator 1, go up 2 lower parts of casing and rotate through the hinge and be connected with upper portion open-ended casing 4 down, the bottom rigid coupling of casing 4 has rings 15 down, go up through bolted connection between casing 2 and the casing 4 down, but go up casing 2 and casing 4 lock down and form sealed casing, but go up casing 2 and casing 4 so set up easy to assemble and dismantle down. The bottom of the left side wall and the right side wall of the upper shell 2 and the top of the left side wall and the right side wall of the lower shell 4 are respectively provided with a semicircular groove, the grooves of the upper shell 2 and the grooves of the lower shell 4 can be spliced to form circular through holes, a lead screw 3 is rotatably connected between the two circular through holes, the lead screw 3 is positioned below the stator 1, the left end of the lead screw 3 penetrates through the left circular through hole and is coaxially and fixedly connected with a turntable 16, and the turntable 16 is provided with a handle 17.
The diameter of the screw rod 3 is gradually increased along the axial direction (from right to left), namely the diameter of the left end of the screw rod 3 is larger than that of the right end of the screw rod 3, the screw rod 3 is provided with a stop block 13, and the stop block 13 is positioned at the left lower part of the stator 1. The screw rod 3 is connected with a fixed base 18 through threads, a fixed frame 5 used for containing a rotor 19 to be assembled is fixedly connected to the fixed base 18, an electromagnet capable of adsorbing the rotor 19 is fixedly connected to the bottom of the fixed frame 5, and a control switch used for controlling the electromagnet to be opened and closed is arranged on the outer wall of the upper shell 2. Go up the inner wall of casing 2 and be equipped with the spacing subassembly of drive, the spacing subassembly of drive includes the rigid coupling at the gas tank 6 of last casing 2 inner wall, and 6 internal seal sliding connection of gas tank have a piston 7, and it has pull rod 8 to articulate on the piston 7, and the one end that piston 7 was kept away from to pull rod 8 articulates on the outer wall of fixed frame 5.
An inner diameter adjusting mechanism is arranged in the fixed base 18, and as shown in fig. 2, the inner diameter adjusting mechanism comprises an annular air bag 9 which is connected to the inner wall of the fixed base 18 in a sliding manner, a protective layer is arranged on the surface of the annular air bag 9, and a conduit 10 is communicated between the annular air bag 9 and the air box 6. Six supporting sheets are evenly distributed on the inner side of the annular air bag 9 in the circumferential direction, fixed cylinders 11 are bonded on the supporting sheets, the fixed cylinders 11 are arranged on the cambered surface of one side face away from the supporting sheets, threads capable of being meshed with the screw rods 3 are arranged on the cambered surface, and arc-shaped rods 12 are connected between every two adjacent fixed cylinders 11 in a sliding mode. Two ends of the arc-shaped rod 12 are respectively positioned inside the two adjacent fixed cylinders 11, and two ends of the arc-shaped rod 12 are fixedly connected with limit blocks 14.
The specific implementation process is as follows: when the rotor 19 needs to be assembled, the rotor 19 to be assembled is placed in the fixed frame 5, and then the electromagnet is turned on through the control switch, so that the rotor 19 is adsorbed and fixed in the fixed frame 5 by the electromagnet. Rotate handle 17, handle 17 drives carousel 16 and rotates, and then drives the lead screw 3 with the coaxial rigid coupling of carousel 16 and rotate, and lead screw 3 makes unable adjustment base 18 with lead screw 3 meshing move from the right side to the left along lead screw 3 at the rotation in-process, because fixed frame 5 on unable adjustment base 18 is connected with pull rod 8, pull rod 8 has spacing effect to unable adjustment base 18 for unable adjustment base 18 only can follow lead screw 3 axial displacement and can not rotate relative lead screw 3.
In the process that the fixing base 18 moves along the screw rod 3 from right to left, the diameter of the screw rod 3 sleeved inside the fixing base 18 is gradually increased. The movement of the fixed base 18 drives the pull rod 8 to move leftwards, and then drives the piston 7 to slide hermetically from right to left along the inner wall of the air box 6, so that the volume of the right side of the piston 7 in the air box 6 is increased, the pressure is reduced, and negative pressure is generated. Because the conduit 10 is communicated between the gas box 6 and the annular gas bag 9, the gas in the annular gas bag 9 flows into the gas box 6 along the conduit 10 under the action of negative pressure, so that the gas in the annular gas bag 9 is reduced, the extrusion action of the annular gas bag 9 on the outer wall of the fixed cylinder 11 is reduced, so that the fixed cylinder 11 moves towards one side far away from the screw rod 3 under the internal extrusion action of the screw rod 3, at the moment, the arc-shaped rod 12 can slide along the fixed cylinder 11, so that the distance between two adjacent fixed cylinders 11 is increased, and further the inner diameter enclosed by the inner wall of the fixed cylinder 11 is increased, so that when the fixed base 18 moves to the diameter increasing position of the screw rod 3 along the screw rod 3, the fixed base 18 can still continue to be kept in an engaged state. Meanwhile, as the diameter of the screw rod 3 is gradually increased, when the fixed base 18 moves to the position where the diameter of the screw rod 3 is increased, the height of the fixed frame 5 at the top end of the fixed base 18 is increased, so that the rotor 19 is lifted, and the vertical distance between the rotor 19 and the stator 1 is shortened.
When the fixed base 18 moves to a position where the rotor 19 is located right below the inner hole of the stator 1, at this time, the left end of the base abuts against the stop block 13 on the screw rod 3, and the stop block 13 has a blocking effect on the fixed base 18. Meanwhile, the piston 7 moves to the left end of the air box 6, the air box 6 can block the movement of the piston 7, the piston 7 cannot move continuously and reaches the stroke end point of the piston 7, the piston 7 can have the reverse fixing effect on the pull rod 8 and the fixing frame 5, the fixing frame 5 cannot move continuously along the axial direction of the screw rod 3, the stroke end point of the fixing frame 5, namely the fixing base 18 is reached, and the fixing base 18 can enable the rotor 19 to be aligned with the stator 1.
After the fixed base 18 reaches the stroke end, it can be judged that the rotor 19 and the stator 1 are centered, at the moment, the vertical distance between the rotor 19 and the stator 1 is shortest, and the control switch is turned off, so that the rotor 19 is assembled in an inner hole of the stator 1 under the magnetic adsorption effect of the surface magnetic steel.
This technical scheme moves through lead screw 3 and drives rotor 19 and remove to being close to 1 direction of stator gradually, when avoiding direct assembly rotor 19, produces the collision with stator 1 or adsorb in stator 1 bottom under the magnetic adsorption of rotor 19 surface magnet steel, and influence the problem of assembly. Meanwhile, the centering process between the stator 1 and the rotor 19 is automatically completed before assembly, and the operation is simple and convenient.
The foregoing is merely an example of the present invention and common general knowledge in the art of designing and/or characterizing particular aspects and/or features is not described in any greater detail herein. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several variations and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (9)
1. Permanent-magnet machine rotor assembly fixture, its characterized in that: including with stator fixed connection's last casing, the bottom opening setting of going up the casing, the below of stator is equipped with the lead screw of rotating the connection in last casing bottom, and the diameter of lead screw one end is greater than the diameter of the lead screw other end, and threaded connection has unable adjustment base on the lead screw, and the last rigid coupling of unable adjustment base has the fixed establishment that is used for the fixed rotor that treats the assembly, is equipped with the internal diameter adjustment mechanism of gasbag formula in the unable adjustment base, the inner wall rigid coupling of going up the casing has the spacing subassembly of drive that is used for driving internal diameter.
2. The permanent magnet motor rotor assembling tool according to claim 1, characterized in that: the bottom of going up the casing rotates and is connected with upper portion open-ended lower casing, goes up the casing and can dismantle between the casing and be connected with the connecting piece down.
3. The permanent magnet motor rotor assembling tool according to claim 1, characterized in that: the fixing mechanism comprises a fixing frame fixedly connected to the upper end of the fixing base, and the bottom of the fixing frame is fixedly connected with an electromagnet capable of adsorbing the rotor.
4. The permanent magnet motor rotor assembling tool according to claim 1, characterized in that: the drive limiting assembly comprises a gas box fixedly connected to the inner wall of the upper shell, a piston is connected in the gas box in a sealing and sliding mode, a pull rod is hinged to the piston, and one end, far away from the piston, of the pull rod is hinged to the outer wall of the fixing frame.
5. The permanent magnet motor rotor assembly tool of claim 4, characterized in that: the inner diameter adjusting mechanism comprises an annular air bag which is connected to the inner wall of the fixed base in a sliding mode, a guide pipe is communicated between the annular air bag and the air box, a plurality of supporting pieces are evenly distributed on the inner side of the annular air bag in the circumferential direction, fixed cylinders are fixedly connected to the supporting pieces, threads which can be meshed with the screw rod are arranged on one side face, away from the supporting pieces, of each fixed cylinder, and arc-shaped rods are connected between every two adjacent fixed cylinders in a sliding mode.
6. The permanent magnet motor rotor assembly tool of claim 5, characterized in that: the both ends of arc pole are located adjacent two fixed section of thick bamboo respectively inside, and the equal rigid coupling in both ends of arc pole has the stopper.
7. The permanent magnet motor rotor assembling tool according to claim 5 or 6, characterized in that: and a protective layer is arranged on the surface of the annular air bag.
8. The permanent magnet motor rotor assembly tool of claim 7, characterized in that: and a stop block is arranged on the screw rod.
9. The permanent magnet motor rotor assembly tool of claim 2, characterized in that: and a hanging ring is fixedly connected to the bottom of the lower shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811584865.1A CN109378955B (en) | 2018-12-24 | 2018-12-24 | Permanent magnet motor rotor assembly fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811584865.1A CN109378955B (en) | 2018-12-24 | 2018-12-24 | Permanent magnet motor rotor assembly fixture |
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| Publication Number | Publication Date |
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| CN109378955A CN109378955A (en) | 2019-02-22 |
| CN109378955B true CN109378955B (en) | 2020-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811584865.1A Active CN109378955B (en) | 2018-12-24 | 2018-12-24 | Permanent magnet motor rotor assembly fixture |
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| CN (1) | CN109378955B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111277089A (en) * | 2020-02-25 | 2020-06-12 | 天津大学 | Motor tool capable of keeping voice coil motor concentrically mounted |
| CN111525761A (en) * | 2020-04-21 | 2020-08-11 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Permanent magnet motor capable of being maintained on site |
| CN112901620B (en) * | 2021-01-29 | 2022-09-09 | 重庆新炬鑫机械有限公司 | Quick positioning device for magnetizing flywheel magnetic steel |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1598135A (en) * | 1968-12-26 | 1970-06-29 | ||
| US3979821A (en) * | 1975-05-09 | 1976-09-14 | Kollmorgen Corporation | Method of manufacturing rare earth permanent magnet rotor |
| JPS63202251A (en) * | 1987-02-17 | 1988-08-22 | Fanuc Ltd | Insertion of rotor into motor and motor applied with said method |
| US6880230B2 (en) * | 2001-11-27 | 2005-04-19 | Asmo Co., Ltd. | Method for manufacturing yoke of electric rotating machine |
| ES2415505T3 (en) * | 2010-05-06 | 2013-07-25 | The Switch Drive Systems Oy | An electric machine and a procedure for mounting it |
| CN103762788B (en) * | 2013-12-31 | 2016-08-17 | 宁波菲仕运动控制技术有限公司 | A kind of assembly tooling of electric machine rotor |
| CN105680648B (en) * | 2016-04-12 | 2018-01-30 | 杭州集智机电股份有限公司 | The radial support and axial pretightening structure of bearing electric machine rotor dynamic balancing measurement are installed |
| CN207542961U (en) * | 2017-11-23 | 2018-06-26 | 南京奥特佳新能源科技有限公司 | DC brushless motor manual separation apparatus |
| CN107800250B (en) * | 2017-11-29 | 2024-05-03 | 苏州三屹晨光自动化科技有限公司 | Magnetic shoe clamping and supporting device |
| CN207530636U (en) * | 2017-12-05 | 2018-06-22 | 贵州航天林泉电机有限公司 | A kind of expansion type, self-locking magnetic steel of stator positioning device |
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2018
- 2018-12-24 CN CN201811584865.1A patent/CN109378955B/en active Active
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Denomination of invention: Assembly fixture for permanent magnet motor rotor Effective date of registration: 20230711 Granted publication date: 20200515 Pledgee: Industrial and Commercial Bank of China Limited Chongqing High tech Branch Pledgor: CHONGQING ELECTRIC MACHINE FEDERATION Ltd. Registration number: Y2023980047824 |
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