CN110994922A - Magnetic steel mounting method of slender rotor - Google Patents
Magnetic steel mounting method of slender rotor Download PDFInfo
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- CN110994922A CN110994922A CN201911343781.3A CN201911343781A CN110994922A CN 110994922 A CN110994922 A CN 110994922A CN 201911343781 A CN201911343781 A CN 201911343781A CN 110994922 A CN110994922 A CN 110994922A
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- 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
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
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Abstract
The invention discloses a magnetic steel mounting method of a slender rotor, which is used for assembling the slender rotor of a low-speed large-torque permanent magnet motor. The invention has the beneficial effects that: the rotor magnetic steel of the long and thin type low-speed large-torque permanent magnet motor is accurately and safely installed, the assembling quality of the rotor magnetic steel of the special long and thin permanent magnet motor is guaranteed, the assembling speed is improved, the collision during the assembling of the magnetic steel is reduced, the manufacturing quality of the special long and thin permanent magnet motor is improved, and the manufacturing cost is reduced.
Description
Technical Field
The invention belongs to the technical field of magnetic steel installation in the technical field of permanent magnet motors, and particularly relates to a magnetic steel installation method of a slender rotor, which is applied to magnetic steel installation of the slender rotor of a permanent magnet motor.
Background
The magnet steel is by several kinds of hard strong metals, like iron and aluminium, nickel, cobalt etc. are synthetic super hardness permanent-magnet alloy of copper, niobium, tantalum sometimes, is one of the essential element of motor, and permanent-magnet machine is in the manufacturing process, in the recess that annular was arranged on the cylindrical outer wall of rotor need be assembled the magnet steel of a plurality of tile forms, because there is huge magnetic force in the magnet steel, it is great to the installation difficulty of magnet steel: for the magnetic steel installation of the small motor rotor, because the same-type mass is large, an automatic installation mode can be realized, the Chinese invention patent CN 201811252933.4 provides a motor rotor magnetic steel installation device, and the magnetic steel is automatically assembled in the production of small and large-scale motors with the same type, so that the efficiency is improved, and the labor cost is saved.
However, the size of the large motor is greatly different, the size, the number and the row number of the magnetic steel needing to be assembled on the outer wall of the rotor are not uniform, the automatic assembly of the rotor magnetic steel is difficult, the existing magnetic steel installation method is realized by manual assembly, and the magnetic steel is installed manually and has two important defects:
the magnetic steel has strong magnetism, most of the produced motors are made of steel, and the steel and the motor can produce strong adsorption force when the steel and the motor are close to each other, so that the personal safety and the property safety of workers are difficult to guarantee;
2, because of the strong magnetic property of the magnetic steel, the magnetic steel is difficult to be stably placed on the steel rotor of the motor by the arm force of a worker, and the magnetic steel is extremely hard and brittle, so that the magnetic steel is easy to be broken in the installation process, thereby increasing the production cost.
In order to solve the problems, the chinese patent CN 201711214742.4 discloses a magnetic steel mounting device for a permanent magnet generator, which comprises a guide device, a propulsion device and a thrust reverser, wherein the guide device is provided with a guide groove, the propulsion device is arranged at the rear end of the guide device and connected with the guide device, the front end of the propulsion device is provided with a clamp head, the propulsion device pushes the clamp head to move back and forth in the guide groove, the thrust reverser is arranged at the front end of the guide device, and the thrust reverser is provided with a cylinder tip connected with the thrust reverser.
The invention has the disadvantages that when the cylinder is used as power, the medium of the cylinder is gas, so that the medium has a larger compression ratio, and the cylinder is used as the reverse thrust of the reverse thrust, so that the accurate position of the magnetic steel in the magnetic steel mounting groove is difficult to control.
Journal "new technology" 2012 12 discloses a device for assembling motor magnetic steel, which avoids the potential safety hazard caused by the suction force generated when the magnetic steel is directly put into the guide slot, avoids the risk of breaking the magnetic steel, and reduces the labor intensity of workers.
The shortcoming of this technique lies in, the magnet steel mounting groove that guider used the adjacent both sides of magnet steel mounting groove is the location guide way, adopts manual propulsive mode to pull in the magnet steel mounting groove with the magnet steel, and this kind of mode can not provide stable thrust, and leads to the magnet steel mounting groove of adjacent both sides by the fish tail, and can not be accurate install the magnet steel in appointed position.
The method can not meet the installation requirement for the slim type low-speed large-torque permanent magnet motor rotor.
In summary, in order to solve the above problems and achieve the purpose of accurately and safely mounting the magnetic steel of the rotor of the slim low-speed large-torque permanent magnet motor, a method for mounting the magnetic steel of the slim rotor, which is suitable for mounting the magnetic steel of the slim rotor of the low-speed large-torque permanent magnet motor, is urgently needed.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a magnetic steel mounting method of a slender rotor.
The invention adopts the following specific technical scheme:
a magnetic steel mounting method of an elongated rotor, which is used for assembling the elongated rotor of a low-speed large-torque permanent magnet motor, comprises the following steps:
the method comprises the following steps: calibrating the left rotor support, the right rotor support, the left magnetism isolating cylinder and the right magnetism isolating cylinder to ensure that a dovetail groove for installing a magnetic pole iron core on the left magnetism isolating cylinder is aligned with a dovetail groove for installing a magnetic pole iron core on the right magnetism isolating cylinder, and tightly pressing a magnetism isolating partition plate between the left magnetism isolating cylinder and the right magnetism isolating cylinder;
step two: pressing the magnetic pole punching sheets forming the magnetic pole iron core into the dovetail groove of the left magnetic isolation cylinder from the left side of the left magnetic isolation cylinder, and pressing the magnetic pole punching sheets forming the magnetic pole iron core into the dovetail groove of the right magnetic isolation cylinder from the right side of the right magnetic isolation cylinder;
step three: the magnetic pole reinforcing key penetrates through a fixing hole in the middle of the magnetic pole stamped sheet, and is screwed to the middle of the magnetic pole reinforcing key from the screw rod parts at two end parts of the magnetic pole reinforcing key by nuts respectively, so that the magnetic pole stamped sheet is tightly pressed on two sides of the magnetism isolating partition plate;
step four: fixing magnetic steel installation tools at two ends of a rotor rotating shaft, aligning a guide groove with a magnetic steel installation groove between adjacent magnetic pole stamped sheets, and placing a stainless steel verification sheet with the same size and the same shape as the magnetic steel in the guide groove for pre-installation verification;
step five: placing the magnetic steel in a guide groove of the magnetic steel mounting tool, and respectively installing the magnetic steel into corresponding magnetic steel mounting grooves from the left side of the left magnetism isolating cylinder and the right side of the right magnetism isolating cylinder, wherein when the magnetic steel is installed, the speed of pushing the magnetic steel to be installed into the magnetic steel mounting grooves by the magnetic steel mounting tool needs to be ensured to be kept uniform;
step six: detaching the magnetic steel mounting tool, unscrewing and detaching the nuts screwed in the third step, and respectively mounting the magnetic isolation end plate fans on the left end surface of the left magnetic isolation cylinder and the right end surface of the right magnetic isolation cylinder for radiating and pressing the magnetic steel;
step seven: and correcting and adjusting the coaxiality of the fan and the rotor of the magnetism-isolating end plate, wherein the offset of the coaxiality is less than or equal to 0.035 mm.
The magnetic steel installation tool is fixed on a rotating shaft of a rotor and is positioned through two end parts of the same magnetic steel installation groove, so that a guide groove of the installation tool is aligned with the magnetic steel installation groove, magnetic steel is installed in the magnetic steel installation groove under the condition of not damaging a magnetic pole iron core, meanwhile, the magnetic steel installation tool is a special tool and comprises a positioning device, a magnetic steel guiding device and a magnetic steel pushing device, the positioning device is C-shaped and wraps a left positioning beam, a right positioning beam and a back beam which is connected with the left positioning beam and the right positioning beam, the magnetic steel guiding device is fixed on the inner side, close to a C-shaped structure, of the back beam through a connecting plate, the magnetic steel guiding device comprises a guide groove and a fixed clamping groove at the end part of the guide groove, the guide groove and the connecting plate are fixed together, and the fixed clamping groove is used for positioning the position of the, the magnetic steel propelling device is fixed between the back beam and the magnetic steel guiding device through the connecting beam and can slide on the back beam. The coaxiality of the fan and the rotor of the magnetism-isolating end plate can be corrected and adjusted to ensure the coaxiality of the fan and the rotor, and the condition that the fan and the inner cavity of the stator interfere in the rotating process of the rotor is avoided, namely the chamber sweeping phenomenon is avoided.
Preferably, the length-diameter ratio of the long and thin rotor is more than or equal to 11 and less than or equal to 20, the length-diameter ratio of the long and thin rotor applicable to the method is more than or equal to 11 and less than or equal to 20, and the magnetic steel can be quickly, safely and accurately installed in place by the method provided by the invention for assembling the magnetic steel of the long and thin rotor of the low-speed high-torque permanent magnet motor, wherein the length-diameter ratio of the long and thin rotor is within.
As a further improvement of the invention, the magnetic steel mounting tool is made of 304 austenitic stainless steel, the magnetic steel has strong magnetic property, and the material is particularly hard and brittle, so the tool is made of 304 austenitic stainless steel, the 304 austenitic stainless steel cannot be magnetized, and the tool has enough rigidity to ensure that the magnetic steel can be safely mounted at a specified position.
As a further improvement of the invention, the magnetic isolation end plate fan is made by integrating the magnetic isolation end plate and the fan into a whole in a metal plate mode, the size of the fan and parts used by the fan can be effectively reduced by adopting the design, meanwhile, the magnetic isolation end plate plays a role in fixing the fan and a role in fixing magnetic steel, and the magnetic steel and the fan are fixed by one-time fixing.
The magnetic isolation partition plate is provided with corresponding through holes for connecting the magnetic steel, so that the magnetic field is not isolated, and a complete magnetic field is formed on the split rotor.
Preferably, the through hole has the same shape as the cross section of the magnetic steel, and the shape of the through hole is larger than the corresponding size of the cross section of the magnetic steel.
Preferably, the through hole has the same shape as the cross section of the magnetic steel, and the shape of the through hole is 0.1 mm larger than the corresponding size of the cross section of the magnetic steel.
The invention has the positive effects that: the rotor magnetic steel of the long and thin type low-speed large-torque permanent magnet motor is accurately and safely installed, the assembling quality of the rotor magnetic steel of the special long and thin permanent magnet motor is guaranteed, the assembling speed is improved, the collision during the assembling of the magnetic steel is reduced, the manufacturing quality of the special long and thin permanent magnet motor is improved, and the manufacturing cost is reduced.
Drawings
FIG. 1 is a schematic diagram of a method for mounting magnetic steel of an elongated rotor according to the present invention;
FIG. 2 is a rotor structure diagram for a method of mounting magnetic steel for an elongated rotor according to the present invention;
FIG. 3 is a side view of a rotor to which the present method of magnetic steel mounting for an elongated rotor is applied;
FIG. 4 is a schematic view of a rotor magnetic steel mounting groove suitable for a magnetic steel mounting method of a slim rotor according to the present invention;
illustration of the drawings: 1-rotating shaft, 2-magnetic isolation partition plate, 3-magnetic pole iron core, 4-magnetic pole reinforcement key, 5-right magnetic isolation cylinder, 51-left magnetic isolation cylinder, 6-right rotor bracket, 61-left rotor bracket, 611-left rotor bracket outer cylinder, 612-left rotor bracket web, 7-right magnetic steel, 71-left magnetic steel, 8-magnetic pole punching sheet, 9-magnetic steel installation groove, 10-magnetic pole reinforcement key installation hole, 11-magnetic steel baffle, 12-magnetic steel installation positioning hole, 13-nut, 14-magnetic isolation end plate fan, 15-positioning device, 1501-left positioning beam, 1502-right positioning beam, 1503-back beam, 16-magnetic steel guiding device, 1601-guiding groove, 1602-connecting plate, 1603-fixing clamping groove, 17-magnetic steel propelling device, 1701-propelling hand wheel, 1702, 170-right lead screw fixing block, 1703-lead screw, 1704-right magnetic steel, 5-pin shaft, 1706-push pedal fixing beam, 1707-lead screw slider, 1708-left lead screw fixing block, 1709-left magnetic steel push plate, 18-locking hand wheel, 1801-back beam mandrel, 1802-back beam sleeve and 1803-back beam mandrel fixing block.
Detailed Description
The invention is described in detail below with reference to the following figures and specific embodiments:
the specific embodiment is as follows:
in the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
The first embodiment is as follows:
a magnetic steel mounting method of a slender rotor is used for assembling the slender rotor of a low-speed large-torque permanent magnet motor, the length-diameter ratio of the slender rotor is 15, and the magnetic steel mounting method comprises the following steps:
the method comprises the following steps: calibrating the left rotor support 61, the right rotor support 6, the left magnetism isolating cylinder 51 and the right magnetism isolating cylinder 5 to ensure that a dovetail groove for installing the magnetic pole iron core 3 on the left magnetism isolating cylinder 51 is aligned with a dovetail groove for installing the magnetic pole iron core 3 on the right magnetism isolating cylinder 5, and tightly pressing the magnetism isolating partition plate 2 between the left magnetism isolating cylinder 51 and the right magnetism isolating cylinder 5, wherein the magnetism isolating partition plate 2 is provided with corresponding through holes for connecting magnetic steel, the through holes are the same as the cross section of the magnetic steel, and the shape of the through holes is 0.1 mm larger than the corresponding size of the cross section of the magnetic steel;
step two: pressing the magnetic pole punching sheets 8 forming the magnetic pole iron core 3 into the dovetail groove of the left magnetic isolation cylinder 51 from the left side of the left magnetic isolation cylinder 51, and pressing the magnetic pole punching sheets 8 forming the magnetic pole iron core 3 into the dovetail groove of the right magnetic isolation cylinder 5 from the right side of the right magnetic isolation cylinder 5;
step three: the magnetic pole reinforcing key 4 penetrates through a fixing hole in the middle of the magnetic pole stamped steel 8, and nuts 13 are respectively screwed from the screw rod parts at two end parts of the magnetic pole reinforcing key 4 to the middle of the magnetic pole stamped steel, so that the magnetic pole stamped steel 8 is tightly pressed on two sides of the magnetism isolating partition plate 2;
step four: fixing magnetic steel mounting tools made of 304 stainless steel at two ends of a rotor rotating shaft 1, aligning a guide groove 1601 with a magnetic steel mounting groove 9 between adjacent magnetic pole punching sheets 8, and placing a stainless steel verification sheet with the same size and the same shape as the magnetic steel in the guide groove 1601 for pre-mounting verification;
step five: placing the magnetic steel in the guide groove 1601 of the magnetic steel installation tool, respectively installing the magnetic steel into the corresponding magnetic steel installation grooves 9 from the left side of the left magnetism isolating cylinder 51 and the right side of the right magnetism isolating cylinder 5, and when installing the magnetic steel, ensuring that the speed of pushing the magnetic steel to be installed into the magnetic steel installation grooves 9 by the magnetic steel installation tool is kept uniform;
step six: the magnetic steel mounting tool is dismounted, the nuts 13 screwed in the third step are unscrewed and dismounted, the magnetic isolation end plate fan 14 is respectively mounted on the left end of the left magnetic isolation cylinder 51 and the right end face of the right magnetic isolation cylinder 5 and used for radiating and pressing magnetic steel, and the magnetic isolation end plate fan 14 is formed in a metal plate mode by integrating a magnetic isolation end plate and a fan;
step seven: and correcting and adjusting the coaxiality of the magnetic isolation end plate fan 14 and the rotor, wherein the offset of the coaxiality is more than 0.01 and less than or equal to 0.035 mm.
Example two:
a magnetic steel mounting method of an elongated rotor is used for assembling the elongated rotor of a low-speed large-torque permanent magnet motor, the length-diameter ratio of the elongated rotor is 18, and the magnetic steel mounting method comprises the following steps:
the method comprises the following steps: calibrating the left rotor support 61, the right rotor support 6, the left magnetism isolating cylinder 51 and the right magnetism isolating cylinder 5 to ensure that a dovetail groove for installing the magnetic pole iron core 3 on the left magnetism isolating cylinder 51 is aligned with a dovetail groove for installing the magnetic pole iron core 3 on the right magnetism isolating cylinder 5, and tightly pressing the magnetism isolating partition plate 2 between the left magnetism isolating cylinder 51 and the right magnetism isolating cylinder 5, wherein the magnetism isolating partition plate 2 is provided with corresponding through holes for connecting magnetic steel, the through holes are the same as the cross section of the magnetic steel, and the shape of the through holes is 0.2 mm larger than the corresponding size of the cross section of the magnetic steel;
step two: pressing the magnetic pole punching sheets 8 forming the magnetic pole iron core 3 into the dovetail groove of the left magnetic isolation cylinder 51 from the left side of the left magnetic isolation cylinder 51, and pressing the magnetic pole punching sheets 8 forming the magnetic pole iron core 3 into the dovetail groove of the right magnetic isolation cylinder 5 from the right side of the right magnetic isolation cylinder 5;
step three: the magnetic pole reinforcing key 4 penetrates through a fixing hole in the middle of the magnetic pole stamped steel 8, and nuts 13 are respectively screwed from the screw rod parts at two end parts of the magnetic pole reinforcing key 4 to the middle of the magnetic pole stamped steel, so that the magnetic pole stamped steel 8 is tightly pressed on two sides of the magnetism isolating partition plate 2;
step four: fixing magnetic steel mounting tools made of 304 stainless steel at two ends of a rotor rotating shaft 1, aligning a guide groove 1601 with a magnetic steel mounting groove 9 between adjacent magnetic pole punching sheets 8, and placing a stainless steel verification sheet with the same size and the same shape as the magnetic steel in the guide groove 1601 for pre-mounting verification;
step five: placing the magnetic steel in the guide groove 1601 of the magnetic steel installation tool, respectively installing the magnetic steel into the corresponding magnetic steel installation grooves 9 from the left side of the left magnetism isolating cylinder 51 and the right side of the right magnetism isolating cylinder 5, and when installing the magnetic steel, ensuring that the speed of pushing the magnetic steel to be installed into the magnetic steel installation grooves 9 by the magnetic steel installation tool is kept uniform;
step six: the magnetic steel mounting tool is dismounted, the nuts 13 screwed in the third step are unscrewed and dismounted, the magnetic isolation end plate fan 14 is respectively mounted on the left end of the left magnetic isolation cylinder 51 and the right end face of the right magnetic isolation cylinder 5 and used for radiating and pressing magnetic steel, and the magnetic isolation end plate fan 14 is formed in a metal plate mode by integrating a magnetic isolation end plate and a fan;
step seven: and correcting and adjusting the coaxiality of the magnetic isolation end plate fan 14 and the rotor, wherein the offset of the coaxiality is more than 0.015 and less than or equal to 0.035 mm.
Example three:
a magnetic steel mounting method of a slender rotor is used for assembling the slender rotor of a low-speed large-torque permanent magnet motor, the length-diameter ratio of the slender rotor is 13, and the magnetic steel mounting method comprises the following steps:
the method comprises the following steps: calibrating the left rotor support 61, the right rotor support 6, the left magnetism isolating cylinder 51 and the right magnetism isolating cylinder 5 to ensure that a dovetail groove for installing the magnetic pole iron core 3 on the left magnetism isolating cylinder 51 is aligned with a dovetail groove for installing the magnetic pole iron core 3 on the right magnetism isolating cylinder 5, and tightly pressing the magnetism isolating partition plate 2 between the left magnetism isolating cylinder 51 and the right magnetism isolating cylinder 5, wherein the magnetism isolating partition plate 2 is provided with corresponding through holes for connecting magnetic steel, the through holes are the same as the cross section of the magnetic steel, and the shape of the through holes is 0.15 mm larger than the corresponding size of the cross section of the magnetic steel;
step two: pressing the magnetic pole punching sheets 8 forming the magnetic pole iron core 3 into the dovetail groove of the left magnetic isolation cylinder 51 from the left side of the left magnetic isolation cylinder 51, and pressing the magnetic pole punching sheets 8 forming the magnetic pole iron core 3 into the dovetail groove of the right magnetic isolation cylinder 5 from the right side of the right magnetic isolation cylinder 5;
step three: the magnetic pole reinforcing key 4 penetrates through a fixing hole in the middle of the magnetic pole stamped steel 8, and nuts 13 are respectively screwed from the screw rod parts at two end parts of the magnetic pole reinforcing key 4 to the middle of the magnetic pole stamped steel, so that the magnetic pole stamped steel 8 is tightly pressed on two sides of the magnetism isolating partition plate 2;
step four: fixing magnetic steel mounting tools made of 304 stainless steel at two ends of a rotor rotating shaft 1, aligning a guide groove 1601 with a magnetic steel mounting groove 9 between adjacent magnetic pole punching sheets 8, and placing a stainless steel verification sheet with the same size and the same shape as the magnetic steel in the guide groove 1601 for pre-mounting verification;
step five: placing the magnetic steel in the guide groove 1601 of the magnetic steel installation tool, respectively installing the magnetic steel into the corresponding magnetic steel installation grooves 9 from the left side of the left magnetism isolating cylinder 51 and the right side of the right magnetism isolating cylinder 5, and when installing the magnetic steel, ensuring that the speed of pushing the magnetic steel to be installed into the magnetic steel installation grooves 9 by the magnetic steel installation tool is kept uniform;
step six: the magnetic steel mounting tool is dismounted, the nuts 13 screwed in the third step are unscrewed and dismounted, the magnetic isolation end plate fan 14 is respectively mounted on the left end of the left magnetic isolation cylinder 51 and the right end face of the right magnetic isolation cylinder 5 and used for radiating and pressing magnetic steel, and the magnetic isolation end plate fan 14 is formed in a metal plate mode by integrating a magnetic isolation end plate and a fan;
step seven: and correcting and adjusting the coaxiality of the magnetic isolation end plate fan 14 and the rotor, wherein the offset of the coaxiality is more than 0.05 and less than or equal to 0.03 mm.
The foregoing has outlined broadly some of the aspects and features of the various embodiments, which should be construed to be merely illustrative of various potential applications. Other beneficial results can be obtained by applying the disclosed information in a different manner or by combining various aspects of the disclosed embodiments. Other aspects and a more complete understanding may be obtained by reference to the detailed description of the exemplary embodiments taken in conjunction with the accompanying drawings, based on the scope defined by the claims.
In addition, the invention also discloses the following technical scheme:
the first scheme is as follows:
aiming at the magnetic steel installation method of the slender rotor provided by the invention, the scheme provides a special magnetic steel installation tool, which comprises a positioning device 15, a magnetic steel guide device 16 and a magnetic steel propulsion device 1701, wherein the positioning device 15 is in a C shape and wraps a left positioning beam 1501, a right positioning beam 1502 and a back beam 1503 connecting the left positioning beam 1501 and the right positioning beam 1502, the magnetic steel guide device 16 is fixed on the inner side of the back beam 1503 close to the C-shaped structure through a connecting plate 1602, the magnetic steel guide device 16 comprises a guide slot 1601 and a fixed clamping slot 1603 at the end part of the guide slot 1601, the guide slot 1601 is fixed with the connecting plate 1602, the fixed clamping slot 1603 is used for positioning the position of the guide slot 1601 on a magnetic steel installation groove 9, the magnetic steel propulsion device 1701 is fixed between the back beam 1503 and the magnetic steel guide device 16 through the connecting beam and can slide on the back beam 1503, and the sliding is realized through a lead screw, the lead screw 1703 is fixed on the back beam 1503 through a left lead screw 1703 fixing block 1708 and a right lead screw 1703 fixing block 1702, is connected with the magnetic steel propulsion device 1701 through a lead screw 1703 sliding block, and is locked through the locking hand wheel 18 after sliding in place.
Scheme II:
aiming at the magnetic steel installation method of the slender rotor provided by the invention, the scheme provides a special magnetic steel installation tool, which comprises a positioning device 15, a magnetic steel guide device 16 and a magnetic steel propelling device 1701, wherein the positioning device 15 is C-shaped and wraps a left positioning beam 1501, a right positioning beam 1502 and a back beam 1503 connecting the left positioning beam 1501 and the right positioning beam 1502, the magnetic steel guide device 16 is fixed on the inner side of the back beam 1503 close to a C-shaped structure through a connecting plate 1602, the connecting plate 1602 is connected on the back beam 1503 through a T-shaped guide rail and a T-shaped guide groove, the connecting plate 1602 slides on the back beam 1503 through the T-shaped guide rail and the T-shaped guide groove and is locked through a locking hand wheel 18 after sliding in place, the magnetic steel guide device 16 comprises a guide groove 1601 and a fixed clamping groove 1603 at the end part of the guide groove 1601, the guide groove 1601 is fixed with the connecting plate 1602, the fixed clamping groove 1603 is used for positioning the, the magnetic steel propulsion device 1701 is fixed between the back beam 1503 and the magnetic steel guide device 16 through a connecting beam, can slide on the back beam 1503 and is realized through a screw 1703, the screw 1703 is fixed on the back beam 1503 through a left screw 1703 fixing block 1708 and a right screw 1703 fixing block 1702 and is connected with the magnetic steel propulsion device 1701 through a screw 1703 sliding block, and the magnetic steel propulsion device 1701 is locked through a locking hand wheel 18 after sliding in place.
The foregoing has broadly outlined some aspects and features of various embodiments, and a prominent feature is that the location position of the magnetic steel installation tool is rotor shaft 1, and positions guide slot 1601 is located at the position on magnetic steel installation slot 9 through fixing slot 1603, and magnetic steel propulsion device 1701 is located outside magnetic steel installation slot 9, and does not contact with magnetic steel installation slot 9 in the working process, can not scratch magnetic steel installation slot 9, and can not cause collision to the magnetic steel.
When in specific use:
the specific use method of the invention is described by combining the scheme I with the specific embodiment, the magnetic steel installation method of the slender rotor is used for assembling the slender rotor of the low-speed large-torque permanent magnet motor, the length-diameter ratio of the slender rotor is 15, and the magnetic steel installation method comprises the following steps:
the method comprises the following steps: calibrating the left rotor support 61, the right rotor support 6, the left magnetism isolating cylinder 51 and the right magnetism isolating cylinder 5 to ensure that a dovetail groove for installing the magnetic pole iron core 3 on the left magnetism isolating cylinder 51 is aligned with a dovetail groove for installing the magnetic pole iron core 3 on the right magnetism isolating cylinder 5, and tightly pressing the magnetism isolating partition plate 2 between the left magnetism isolating cylinder 51 and the right magnetism isolating cylinder 5, wherein the magnetism isolating partition plate 2 is provided with corresponding through holes for connecting magnetic steel, the through holes are the same as the cross section of the magnetic steel, and the shape of the through holes is 0.1 mm larger than the corresponding size of the cross section of the magnetic steel;
step two: pressing the magnetic pole punching sheets 8 forming the magnetic pole iron core 3 into the dovetail groove of the left magnetic isolation cylinder 51 from the left side of the left magnetic isolation cylinder 51, and pressing the magnetic pole punching sheets 8 forming the magnetic pole iron core 3 into the dovetail groove of the right magnetic isolation cylinder 5 from the right side of the right magnetic isolation cylinder 5;
step three: the magnetic pole reinforcing key 4 penetrates through a fixing hole in the middle of the magnetic pole stamped steel 8, and nuts 13 are respectively screwed from the screw rod parts at two end parts of the magnetic pole reinforcing key 4 to the middle of the magnetic pole stamped steel, so that the magnetic pole stamped steel 8 is tightly pressed on two sides of the magnetism isolating partition plate 2;
step four: fixing magnetic steel mounting tools made of 304 stainless steel at two ends of a rotor rotating shaft 1, aligning a guide groove 1601 with a magnetic steel mounting groove 9 between adjacent magnetic pole punching sheets 8, and placing a stainless steel verification sheet with the same size and the same shape as the magnetic steel in the guide groove 1601 for pre-mounting verification; when the magnetic steel installation tool is fixed, the pushing hand wheel 1701 is rotated, the magnetic steel pushing device 1701 is adjusted to the end part, the locking hand wheel 18 is loosened, the back beam mandrel fixing block 1803 is pressed, the back beam sleeve 1802 is pulled to slide along the back beam mandrel 1801, the distance between the left positioning beam 1501 and the right positioning beam 1502 is larger than the length of the rotor rotating shaft 1, the left positioning beam 1501 and the right positioning beam 1502 are respectively sleeved at the two ends of the rotor rotating shaft 1, the back beam sleeve 1802 is pushed to a proper position and locked with the back beam 1503 sleeve by the locking hand wheel 18, the fixing clamping groove 1603 is clamped in the magnetic steel installation positioning hole 12, the guide groove 1601 is aligned with the magnetic steel installation groove 9 between adjacent magnetic pole punching sheets 8, then the stainless steel verification push plate is placed in the guide groove 1601 and is rotated and pushed into the hand wheel 1701, the magnetic steel pushing device 1701 is pushed towards the middle part of the rotor, in the pushing process, for example, the left magnetic steel pushing plate 1704 is firstly contacted with, under the thrust effect, right magnet steel push pedal 1704 rotates around round pin axle 1705, it supplies magnet steel advancing device 1701 to continue to impel right to let out the space, when left magnet steel push pedal 1709 touch the stainless steel and examine the certificate, because the spacing effect of machinery, left magnet steel push pedal 1709 can not rotate, and then promote the stainless steel and examine the certificate and get into magnet steel mounting groove 9, reach the installation in place, verify correct back reverse rotation impel hand wheel 1701, when right magnet steel push pedal 1704 touches the stainless steel and examine the certificate, because the spacing effect of machinery, right magnet steel push pedal 1704 can not rotate, and then promote the stainless steel and examine the certificate and break away from magnet steel mounting groove 9. The resetting of the left magnetic steel push plate 1709 and the right magnetic steel push plate 1704 is realized by a torsion spring arranged at the pin 1705, and the mode is a conventional mode of mechanical resetting and is not described repeatedly;
step five: placing magnetic steel in a guide groove 1601 of the magnetic steel installation tool, respectively installing the magnetic steel into corresponding magnetic steel installation grooves 9 from the left side of the left magnetism isolating cylinder 51 and the right side of the right magnetism isolating cylinder 5, and when the magnetic steel is installed, ensuring that the speed of pushing the magnetic steel to be installed into the magnetic steel installation grooves 9 by the magnetic steel installation tool is uniform, wherein the magnetic steel installation tool is pushed in the same way as the fourth step;
step six: the magnetic steel mounting tool is dismounted, the nuts 13 screwed in the third step are unscrewed and dismounted, the magnetic isolation end plate fan 14 is respectively mounted on the left end of the left magnetic isolation cylinder 51 and the right end face of the right magnetic isolation cylinder 5 and used for radiating and pressing magnetic steel, and the magnetic isolation end plate fan 14 is formed in a metal plate mode by integrating a magnetic isolation end plate and a fan;
step seven: and correcting and adjusting the coaxiality of the magnetic isolation end plate fan 14 and the rotor, wherein the offset of the coaxiality is more than 0.01 and less than or equal to 0.035 mm.
The above examples illustrate the present invention in detail. It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and that various changes, modifications, additions, deletions, and substitutions which may be made by those skilled in the art within the spirit of the present invention are also within the scope of the present invention.
Claims (7)
1. A magnetic steel mounting method of a slender rotor is used for assembling the slender rotor of a low-speed large-torque permanent magnet motor, and is characterized by comprising the following steps:
the method comprises the following steps: calibrating the left rotor support, the right rotor support, the left magnetism isolating cylinder and the right magnetism isolating cylinder to ensure that a dovetail groove for installing a magnetic pole iron core on the left magnetism isolating cylinder is aligned with a dovetail groove for installing a magnetic pole iron core on the right magnetism isolating cylinder, and tightly pressing a magnetism isolating partition plate between the left magnetism isolating cylinder and the right magnetism isolating cylinder;
step two: pressing the magnetic pole punching sheets forming the magnetic pole iron core into the dovetail groove of the left magnetic isolation cylinder from the left side of the left magnetic isolation cylinder, and pressing the magnetic pole punching sheets forming the magnetic pole iron core into the dovetail groove of the right magnetic isolation cylinder from the right side of the right magnetic isolation cylinder;
step three: the magnetic pole reinforcing key penetrates through a fixing hole in the middle of the magnetic pole stamped sheet, and is screwed to the middle of the magnetic pole reinforcing key from the screw rod parts at two end parts of the magnetic pole reinforcing key by nuts respectively, so that the magnetic pole stamped sheet is tightly pressed on two sides of the magnetism isolating partition plate;
step four: fixing magnetic steel installation tools at two ends of a rotor rotating shaft, aligning a guide groove with a magnetic steel installation groove between adjacent magnetic pole stamped sheets, and placing a stainless steel verification sheet with the same size and the same shape as the magnetic steel in the guide groove for pre-installation verification;
step five: placing the magnetic steel in a guide groove of the magnetic steel mounting tool, and respectively installing the magnetic steel into corresponding magnetic steel mounting grooves from the left side of the left magnetism isolating cylinder and the right side of the right magnetism isolating cylinder, wherein when the magnetic steel is installed, the speed of pushing the magnetic steel to be installed into the magnetic steel mounting grooves by the magnetic steel mounting tool needs to be ensured to be kept uniform;
step six: detaching the magnetic steel mounting tool, unscrewing and detaching the nuts screwed in the third step, and respectively mounting the magnetic isolation end plate fans on the left end surface of the left magnetic isolation cylinder and the right end surface of the right magnetic isolation cylinder for radiating and pressing the magnetic steel;
step seven: and correcting and adjusting the coaxiality of the fan and the rotor of the magnetism-isolating end plate, wherein the offset of the coaxiality is less than or equal to 0.035 mm.
2. The method for mounting the magnetic steel of the slender rotor according to claim 1, wherein the length-diameter ratio of the slender rotor is more than or equal to 11 and less than or equal to 20.
3. A method of magnetic steel mounting for an elongated rotor according to claim 2, wherein the magnetic steel mounting tool is made of 304 stainless steel.
4. A method for mounting magnetic steel for an elongated rotor according to claim 3, wherein the magnetic isolation end plate fan is made of sheet metal by integrating the magnetic isolation end plate and the fan.
5. A method for mounting magnetic steel on an elongated rotor according to any one of claims 1 to 4, wherein the magnetic isolation partition plate is provided with corresponding through holes for engaging the magnetic steel.
6. The method for mounting the magnetic steel of the elongated rotor according to any one of claims 5, wherein the through hole has the same shape as the cross section of the magnetic steel, and the shape of the through hole is larger than the corresponding size of the cross section of the magnetic steel.
7. A method for mounting magnetic steel of an elongated rotor according to claim 6, wherein the through hole has the same cross-sectional shape as the magnetic steel, and the shape of the through hole is 0.1 mm larger than the corresponding size of the cross-sectional shape of the magnetic steel.
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| CN201911343781.3A CN110994922B (en) | 2019-12-24 | 2019-12-24 | Magnetic steel mounting method of slender rotor |
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| CN201911343781.3A CN110994922B (en) | 2019-12-24 | 2019-12-24 | Magnetic steel mounting method of slender rotor |
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| CN110994922B CN110994922B (en) | 2021-07-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114977689A (en) * | 2022-07-28 | 2022-08-30 | 常州市武进红东电子有限公司 | Accurate calibration device and calibration method for multi-pole magnetic ring and motor main rotor |
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| CN207490718U (en) * | 2017-12-28 | 2018-06-12 | 天津市西青区华兴电机制造有限公司 | One kind is used for the embedded assembly tooling of magneto upper magnetic steel |
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| JPH05276715A (en) * | 1992-03-24 | 1993-10-22 | Mitsuba Electric Mfg Co Ltd | Method of assembling revolving-field type rotor |
| JPH0984284A (en) * | 1995-09-14 | 1997-03-28 | Honda Motor Co Ltd | Method and apparatus for covering rotor with magnet |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114977689A (en) * | 2022-07-28 | 2022-08-30 | 常州市武进红东电子有限公司 | Accurate calibration device and calibration method for multi-pole magnetic ring and motor main rotor |
| CN114977689B (en) * | 2022-07-28 | 2022-10-21 | 常州市武进红东电子有限公司 | Accurate calibration device and calibration method for multi-pole magnetic ring and motor main rotor |
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| CN110994922B (en) | 2021-07-13 |
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Denomination of invention: A magnetic steel installation method for slender rotor Effective date of registration: 20220628 Granted publication date: 20210713 Pledgee: Rizhao Donggang Rural Commercial Bank Co.,Ltd. Pledgor: RIZHAO DONGFANG MOTOR Co.,Ltd. Registration number: Y2022980009237 |