CN109412297B - Balanced-ring-free embedded servo motor rotor assembly and manufacturing method - Google Patents
Balanced-ring-free embedded servo motor rotor assembly and manufacturing method Download PDFInfo
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- CN109412297B CN109412297B CN201811471688.6A CN201811471688A CN109412297B CN 109412297 B CN109412297 B CN 109412297B CN 201811471688 A CN201811471688 A CN 201811471688A CN 109412297 B CN109412297 B CN 109412297B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 90
- 239000010959 steel Substances 0.000 claims abstract description 90
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000004080 punching Methods 0.000 claims description 46
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 9
- 230000000750 progressive effect Effects 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 abstract description 5
- 239000004917 carbon fiber Substances 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 5
- 238000009423 ventilation Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 239000000306 component Substances 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
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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
- H02K15/02—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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a rotor assembly of an embedded servo motor without a balance ring and a manufacturing method thereof, wherein the rotor assembly comprises a rotating shaft, a rotor module, a lock nut and a filling core, and a first U-shaped groove extending along the length direction of the rotating shaft is arranged on the outer circumferential surface of the rotating shaft; the rotor module comprises a rotor core and magnetic steel, wherein a plurality of magnetic steel through holes and filling core mounting holes are formed in the circumferential end face of the rotor core along the axial direction, the magnetic steel is mounted in each magnetic steel through hole, a filling core for dynamic balance of a rotor assembly is filled in each filling core mounting hole, a radial positioning boss matched with the first U-shaped groove is arranged on the inner wall of the rotor core, the rotor module is sleeved on a rotating shaft, the radial positioning boss is positioned in the first U-shaped groove, and the rear end of the rotating shaft is connected with a locking nut; the invention omits the parts such as the balance ring, the carbon fiber tube or the metal sleeve, and the like, has less assembly procedures, small assembly accumulated error, high rotor dynamic balance precision, small vibration, low noise, less heat generated during operation, no eddy current loss, high precision and good motor overall performance.
Description
Technical Field
The invention relates to the technical field of motor manufacturing, in particular to a rotor assembly of an embedded servo motor without a balance ring and a manufacturing method.
Background
The rotor assembly of the common servo motor is generally assembled by parts such as a rotating shaft, a rotor core, magnetic steel, a balance ring, a carbon fiber tube or a metal sleeve and the like, and the rotor assembly has more assembly procedures and parts. The rotor module composed of the rotor core and the magnetic steel forms a core component of the rotor assembly, and the structure and the size of the rotor core and the magnetic steel basically determine the manufacturing process, the cost and the performance of the rotor assembly. The existing rotor assembly has high requirements on dimensional tolerance and form and position tolerance, and when the rotor assembly is assembled in a plurality of working procedures and parts, the assembly accumulated error is larger, so that the dynamic balance precision of the rotor is difficult to do, and the vibration and noise of the motor are affected.
Disclosure of Invention
The invention aims to solve the technical problems of providing a rotor assembly of a balancing ring-free embedded servo motor and a manufacturing method thereof, aiming at the defects of the prior art, the rotor assembly of the balancing ring-free embedded servo motor and the manufacturing method thereof omit parts such as a balancing ring, a carbon fiber tube or a metal sleeve and the like of a common rotor assembly, and the rotor assembly has the advantages of simple structure, less assembly procedure, less assembly accumulated error, high dynamic balancing precision of the rotor, small volume, less material consumption, less vibration and noise in the working process, less heat generated during operation, no eddy current loss and good overall performance of the motor.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
the rotor assembly of the non-balance ring embedded servo motor comprises a rotating shaft, a rotor module, a lock nut and a filling core, wherein a circle of positioning convex ring is arranged on the outer circumferential surface of the front end of the rotating shaft, a first U-shaped groove extending along the length direction of the rotating shaft is arranged on the outer circumferential surface of the rotating shaft, and the first U-shaped groove is positioned at the rear side of the positioning convex ring; the rotor module comprises a rotor core and magnetic steel, a plurality of magnetic steel through holes and filling core mounting holes are formed in the circumferential end face of the rotor core along the axial direction, magnetic steel is mounted in each magnetic steel through hole, a filling core for dynamic balance of a rotor assembly is filled in each filling core mounting hole, radial positioning bosses matched with the first U-shaped grooves are arranged on the inner wall of the rotor core, the rotor module is sleeved on the rotating shaft and located in the first U-shaped grooves, the front end face of the rotor module is in contact with the end face of the positioning convex ring on the rotating shaft in a fitting mode, and the rear end of the rotating shaft is connected with a locking nut and in contact with the rear end face of the rotor module.
As a further improved technical scheme of the invention, the rotor core comprises a plurality of rotor punching sheets, radial positioning bosses are arranged on the inner hole walls of the rotor punching sheets, a plurality of magnetic steel through holes, lightening holes, vent holes and filling core mounting holes which are distributed at intervals are formed in the circumferential end faces of the rotor punching sheets, a plurality of self-buckling points which are distributed at intervals are formed in the circumferential end faces of the rotor punching sheets, the magnetic steel through holes are positioned on the outer sides of the lightening holes, the vent holes, the filling core mounting holes and the self-buckling points, and the rotor punching sheets are riveted with each other through the self-buckling points to form the rotor core.
As a further improved technical scheme of the invention, the number of the magnetic steel through holes on the rotor punching sheet is at least 2, the number of the magnetic steel through holes is positive even, the number of the magnetic steel is at least 2, the number of the magnetic steel is positive even, the radial positioning bosses on the rotor punching sheet are multiple, the first U-shaped grooves on the outer circumferential surface of the rotating shaft are multiple, and the rotor punching sheet is a silicon steel sheet.
As a further improved technical scheme of the invention, the magnetic steel comprises N-pole magnetic steel and S-pole magnetic steel, the magnetic steel is rectangular, and the filling core is a copper core.
As a further improved technical scheme of the invention, the number of the rotor modules is 1 or more, the 1 or more rotor modules are connected in series and then are pressed on the rotating shaft, the outer circumferential surface of the rear end of the rotating shaft is provided with external threads which are used for being matched and connected with the locking nut, the rear end of the rotating shaft is connected with the locking nut through the external threads, and the locking nut is used for locking the 1 or more rotor modules.
As a further improved technical scheme of the invention, the rotating shaft is a hollow rotating shaft, the inner hole is axially provided with a second U-shaped groove for installing a flat key so as to be connected with a main shaft of the machine head of the equipment, the front end face of the rotating shaft is provided with a lifting hole, and the rear end face of the rotating shaft is provided with a threaded hole for disassembling the rotor assembly.
In order to achieve the technical purpose, the invention adopts another technical scheme that:
a manufacturing method of a rotor assembly of a non-balance ring embedded servo motor comprises the following steps:
step 1: taking silicon steel sheets, molding the silicon steel sheets into a plurality of rotor punching sheets through a high-speed punch and progressive molding, and stacking the rotor punching sheets to form a rotor iron core;
step 2: processing the spindle bar stock into a spindle finished product;
step 3: embedding an N-pole magnetic steel into a magnetic steel through hole of the rotor core, and fixing the end face of the N-pole magnetic steel after aligning with the end face of the rotor core; embedding an S-pole magnetic steel into a magnetic steel through hole adjacent to the N-pole magnetic steel, aligning and fixing the end face of the S-pole magnetic steel with the end face of the rotor core; sequentially arranging and embedding magnetic steels into magnetic steel through holes of a rotor core according to the polarity sequence of N-S-N-S magnetic poles to form 1 rotor module;
step 4: after being connected in series, 1 or more rotor modules are pressed on a rotating shaft through an oil press, and a locking nut is arranged on the rotating shaft and locks the rotor modules to form a rotor assembly;
step 5: and sleeving the dynamic balance tool qualified in correction on the rotor assembly, then placing the rotor assembly on a dynamic balance instrument, and carrying out dynamic balance treatment on the rotor assembly by adopting a weighting method, so that the unbalance of the rotor assembly meets the requirement, wherein the weighting method is to place a filling core into a filling core mounting hole of a rotor module by using the filling core as a filler.
The beneficial effects of the invention are as follows:
(1) The rotor assembly provided by the invention omits parts such as a balance ring, a carbon fiber tube or a metal sleeve and the like on a common rotor assembly, has a simple structure, is few in machining and assembling procedures, causes small assembly accumulation errors, is simple in rotor dynamic balance operation, has high precision, and is convenient to install and detach.
(2) The magnetic steel is a common rectangular magnetic shoe, is embedded into the rotor core, has less consumable materials, and does not need to be positioned.
(3) According to the invention, 1 or more standardized rotor modules can be selected according to different length requirements and are assembled and installed on the rotating shaft, one rotor assembly can be matched with a plurality of stator assemblies, and the universality and interchangeability of the rotor modules can be realized.
(4) The rotor punching sheet structure is designed to be self-buckling, and is produced by a high-speed punch and a progressive die to ensure the requirements of the inner diameter, the outer diameter, the height dimension and the form and position tolerance of a rotor core, and the circumferential surface of the rotor punching sheet is provided with a plurality of weight reducing holes which are distributed at intervals, so that the weight of the rotor is reduced, and the rotational inertia of the rotor is also reduced. The circumference surface of the rotor punching sheet is provided with a plurality of ventilation holes which are distributed at intervals, so that ventilation is convenient. The height of the rotor core is determined by the number of rotor laminations.
(5) The rotor component produced by the invention has high precision of size, coaxiality and verticality, and small vibration and noise in the working process; the rotor assembly has small volume, less material consumption, less heat generated during operation, no eddy current loss and good overall performance of the motor.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic structural view of a rotating shaft according to the present invention.
Fig. 3 is a schematic structural view of a rotor sheet according to the present invention.
Fig. 4 is a front view of the lock nut of the present invention.
Fig. 5 is a side view of the lock nut of the present invention.
Detailed Description
The following further describes embodiments of the invention with reference to fig. 1 to 5:
referring to fig. 1, a rotor assembly of a non-balance ring embedded servo motor comprises a rotating shaft 1, a rotor module, a locking nut 2 and a filling core, wherein, referring to fig. 2, fig. 2 is a right view of fig. 2, fig. 2 is a left view of fig. 2, a circle of positioning convex ring 4 is arranged on the outer circumferential surface of the front end of the rotating shaft 1, a first U-shaped groove 5 extending along the length direction of the rotating shaft 1 is arranged on the outer circumferential surface of the rotating shaft 1, the first U-shaped groove 5 is positioned at the rear side of the positioning convex ring 4, and the first U-shaped groove 5 is used for realizing radial positioning with the rotor module. Referring to fig. 1, the rotor module includes a rotor core 6 and a magnetic steel 7, the magnetic steel 7 is embedded in the rotor core 6, and specifically referring to fig. 3, a plurality of magnetic steel through holes 8 and filling core mounting holes 9 are arranged on the circumferential end surface of the rotor core 6 along the axial direction, the magnetic steel 7 is installed in the magnetic steel through holes 8, the filling core mounting holes 9 are filled with filling cores for dynamic balance of the rotor assembly, a radial positioning boss 10 matched with the first U-shaped groove 5 is arranged on the inner wall of the rotor core 6, and the radial positioning boss 10 is clamped in the first U-shaped groove 5 to realize positioning of the rotor module. The rotor module is sleeved on the rotating shaft 1, the radial positioning boss 10 is clamped into the first U-shaped groove 5, the front end face of the rotor module is attached to the end face of the positioning convex ring 4 on the rotating shaft 1, the rear end of the rotating shaft 1 is connected with the locking nut 2, and the front end face of the locking nut 2 is attached to the rear end face of the rotor module. The lock nut 2 is used to lock the rotor module so that the rotor module is clamped between the positioning bead 4 and the lock nut 2.
Referring to fig. 3, the rotor core 6 includes a plurality of rotor punching sheets 11, a radial positioning boss 10 is disposed on an inner hole wall of the rotor punching sheet 11, a plurality of magnetic steel through holes 8, lightening holes 12, ventilation holes 13 and filling core mounting holes 9 are disposed on a circumferential end surface of the rotor punching sheet 11, a plurality of self-fastening points 14 are disposed on the circumferential end surface of the rotor punching sheet 11, the magnetic steel through holes 8 are located on outer sides of the lightening holes 12, the ventilation holes 13, the filling core mounting holes 9 and the self-fastening points 14, the rotor punching sheets 11 are aligned and riveted with each other through the self-fastening points 14 to form the rotor core 6, a certain number of self-fastening points 14 are directly punched during punching of the rotor punching sheet 11, and the rotor punching sheets 11 are formed by self-riveting according to a certain number during riveting. The height of the rotor core 6 is determined by the corresponding number of rotor laminations 11. The magnetic steel through holes 8, the lightening holes 12 and the ventilation holes 13 are uniformly distributed on the circumferential end face of the rotor punching sheet 11 along the circumferential direction, and every 3 filling core mounting holes 9 form a pair and are further uniformly distributed on the circumferential end face of the rotor punching sheet 11.
The number of the magnetic steel through holes 8 on the rotor punching sheet 11 in this embodiment is at least 2, and the number of the magnetic steel through holes 8 is an even number. The magnetic steel 7 made of at least two permanent magnetic materials is embedded in the magnetic steel through holes 8 on the inner circumference of the rotor core 6, and the number of the magnetic steels 7 is positive even number and is arranged according to the polarity sequence of N-S-N. The magnetic steel 7 in this embodiment includes N-pole magnetic steel and S-pole magnetic steel, the magnetic steel 7 is rectangular, and the shape, size and number of the magnetic steel 7 are determined according to the size of the rotor structure.
The number of the radial positioning bosses 10 on the rotor punching sheet 11 and the number of the first U-shaped grooves 5 of the rotating shaft 1 are all plural, and the rotor punching sheet 11 is a silicon steel sheet. The filling core is a copper core.
The rotor module of this embodiment is 1 or more, and the pressure equipment is on pivot 1 behind 1 or more rotor module series connection, and rotor module's rotor core 6's preceding terminal surface is laminated with pivot 1's location bead 4, is equipped with on the outer periphery of pivot 1 rear end to be used for with lock nut 2 mutually supporting external screw thread 15 of being connected, and pivot 1 rear end is connected with lock nut 2 through external screw thread 15, and lock nut 2 is used for locking 1 or more rotor module.
Referring to fig. 2, the rotary shaft 1 of the present embodiment is a hollow rotary shaft and is internally provided with a first cylindrical shaft hole and a second cylindrical shaft hole which are communicated with each other, the first cylindrical shaft hole being larger than the second cylindrical shaft hole. The first cylindrical shaft hole is axially provided with a second U-shaped groove 3 for installing a flat key and connecting with a machine head main shaft of the equipment, the front end face of the rotating shaft 1 is provided with a lifting hole, and the rear end face of the rotating shaft is provided with a threaded hole for disassembling a rotor assembly. The inner hole, the end surface and the outer circle of the rotating shaft 1 have geometric tolerance requirements. The screw hole for detaching the rotor assembly can be fixed on a special rotor mounting and detaching machine through a screw, and the rotor assembly is detached from the main shaft of the machine head of the equipment through the special rotor mounting and detaching machine.
The embodiment also provides a manufacturing method of the rotor assembly of the non-balance ring embedded servo motor, which comprises the following steps:
step 1: the silicon steel sheet is taken, the silicon steel sheet is manufactured into a plurality of rotor punching sheets 11 through a high-speed punch and a progressive die, the rotor punching sheets 11 are structurally designed to be self-buckling, the requirements of the inner diameter, the outer diameter, the height dimension and the form and position tolerance of a rotor core 6 are met through the high-speed punch and the progressive die, a plurality of weight reducing holes 12 are formed in the circumferential surface of the rotor punching sheets 11 at intervals, the rotor weight is reduced, and the rotational inertia of the rotor is reduced. The circumference of the rotor punching sheet 11 is provided with a plurality of ventilation holes 13 which are distributed at intervals, thereby facilitating ventilation. The inner hole wall of the rotor punching sheet 11 is provided with a radial positioning boss 10 for radial positioning with the rotating shaft 1, and the height of the rotor iron core 6 is determined by the number of the rotor punching sheets 11 and is realized by automatic high-speed forming equipment and a die. And stacking a plurality of rotor punching sheets 11 to form the rotor core 6 by using a special die or tool.
Step 2: and processing the spindle bar stock into a spindle 1 finished product through mechanical processing equipment and a process flow.
Step 3: the magnetic steel 7 is divided into N-pole magnetic steel and S-pole magnetic steel, the N-pole magnetic steel and the S-pole magnetic steel are cuboid, and the size of the magnetic steel 7 is matched with a rectangular magnetic steel through hole 8 on the outer side of the axial direction of the rotor core 6.
Embedding an N-pole magnetic steel into a magnetic steel through hole 8 of the rotor core 6, and fixing the end face of the N-pole magnetic steel after aligning with the end face of the rotor core 6; embedding an S-pole magnetic steel into a magnetic steel through hole 8 adjacent to the N-pole magnetic steel, aligning and fixing the end face of the S-pole magnetic steel with the end face of the rotor core 6; sequentially arranging and embedding the magnetic steels 7 into the magnetic steel through holes 8 of the rotor core 6 according to the polarity sequence of the magnetic poles of N-S-N-S to form 1 rotor module;
step 4: after connecting 1 or more rotor modules in series, pressing the rotor modules on the rotating shaft 1 through an oil press and a tool, and installing a locking nut 2 on the rotating shaft 1 and locking the rotor modules to form a rotor assembly;
step 5: and sleeving the qualified dynamic balance tool on the rotor assembly, locking the other end of the tool by using a nut, then placing the tool on a dynamic balance instrument, and carrying out dynamic balance treatment on the rotor assembly by adopting a weighting method, wherein the weighting method is to place a copper core serving as a filler into a filler core mounting hole 9 of the rotor module, so that the unbalance of the rotor assembly meets the requirement. The dynamic balance treatment is simple to operate.
The balancing ring and the carbon fiber tube or the metal sleeve of the common rotor assembly are omitted, the machining and assembling procedures are few, the assembly accumulated error is small, the rotor dynamic balancing operation is simple, the precision is high, and the assembly and the disassembly are convenient. 1 or more standardized rotor module combinations can be selected according to different length requirements, one rotor assembly can be matched with a plurality of stator assemblies, and universality and interchangeability of the rotor modules can be realized. The rotor module is integral, and rotor punching 11 is from locking-type structure, forms rotor core 6 through punching press and high-speed die disposable blanking and folding fourth of twelve earthly branches, and rotor core 6's size and action tolerance requirement are guaranteed easily, and degree of automation is high. The magnet steel 7 is ordinary rectangle magnetic shoe, and in the embedded rotor core 6, the consumptive material of magnet steel 7 is less, and need not fix a position the magnetic shoe. The rotor part has high manufacturing precision, less assembly procedures and high degree of automation; the rotor component has high precision of size, coaxiality and verticality, and small vibration and noise in the working process; the rotor assembly has small volume, less material consumption, less heat generated during operation, no eddy current loss and good overall performance of the motor.
The scope of the present invention includes, but is not limited to, the above embodiments, and any alterations, modifications, and improvements made by those skilled in the art are intended to fall within the scope of the invention.
Claims (5)
1. The utility model provides a no embedded servo motor rotor subassembly of balanced ring which characterized in that: the novel rotor type high-speed motor comprises a rotating shaft (1), a rotor module, a lock nut (2) and a filling core, wherein a circle of positioning convex ring (4) is arranged on the outer circumferential surface of the front end of the rotating shaft (1), a first U-shaped groove (5) extending along the length direction of the rotating shaft is arranged on the outer circumferential surface of the rotating shaft (1), and the first U-shaped groove (5) is positioned at the rear side of the positioning convex ring (4); the rotor module comprises a rotor core (6) and magnetic steel (7), a plurality of magnetic steel through holes (8) and filling core mounting holes (9) are formed in the circumferential end face of the rotor core (6) along the axial direction, the magnetic steel (7) are mounted in the magnetic steel through holes (8), the filling core mounting holes (9) are filled with filling cores for dynamic balance of a rotor assembly, radial positioning bosses (10) matched with first U-shaped grooves (5) are formed in the inner wall of the rotor core (6), the rotor module is sleeved on the rotating shaft (1), the radial positioning bosses (10) are located in the first U-shaped grooves (5), the front end face of the rotor module is in contact with the end face of a positioning convex ring (4) on the rotating shaft (1), the rear end of the rotating shaft (1) is connected with a locking nut (2), and the front end face of the locking nut (2) is in contact with the rear end face of the rotor module.
The rotor core (6) comprises a plurality of rotor punching sheets (11), radial positioning bosses (10) are arranged on the inner hole wall of each rotor punching sheet (11), a plurality of magnetic steel through holes (8), lightening holes (12), vent holes (13) and filling core mounting holes (9) which are distributed at intervals are formed in the circumferential end face of each rotor punching sheet (11), a plurality of self-buckling points (14) which are distributed at intervals are formed in the circumferential end face of each rotor punching sheet (11), and the magnetic steel through holes (8) are located on the outer sides of the lightening holes (12), the vent holes (13), the filling core mounting holes (9) and the self-buckling points (14), and a plurality of rotor punching sheets (11) are mutually riveted through the self-buckling points (14) so as to form the rotor core (6);
the rotor module is 1 or more, and 1 or more rotor module is pressed on the pivot (1) after establishing ties, is equipped with on the outer periphery of pivot (1) rear end and is used for mutually supporting external screw thread (15) of being connected with lock nut (2), pivot (1) rear end is connected with lock nut (2) through external screw thread (15), lock nut (2) are used for locking 1 or more rotor module.
2. The balancing ring-free embedded servo motor rotor assembly of claim 1, wherein: the rotor punching device is characterized in that the number of the magnetic steel through holes (8) on the rotor punching sheet (11) is at least 2, the number of the magnetic steel through holes (8) is positive even, the number of the magnetic steels (7) is at least 2, the number of the magnetic steels (7) is positive even, the number of the radial positioning bosses (10) on the rotor punching sheet (11) is multiple, the number of the first U-shaped grooves (5) on the outer circumferential surface of the rotating shaft (1) is multiple, and the rotor punching sheet (11) is a silicon steel sheet.
3. The balancing ring-free embedded servo motor rotor assembly of claim 1, wherein: the magnetic steel (7) comprises N-pole magnetic steel and S-pole magnetic steel, the magnetic steel (7) is rectangular, and the filling core is a copper core.
4. The balancing ring-free embedded servo motor rotor assembly of claim 1, wherein: the rotary shaft (1) is a hollow rotary shaft, a second U-shaped groove (3) for installing a flat key to connect with a machine head main shaft of the equipment is axially formed in an inner hole of the rotary shaft (1), a lifting hole is formed in the front end face of the rotary shaft (1), and a threaded hole for disassembling a rotor assembly is formed in the rear end face of the rotary shaft.
5. A method of manufacturing a balancing ring-less embedded servo motor rotor assembly of claim 1, wherein: comprising the following steps:
step 1: taking silicon steel sheets, molding the silicon steel sheets into a plurality of rotor punching sheets (11) through a high-speed punch and progressive molding, and stacking the rotor punching sheets (11) to form a rotor iron core (6);
step 2: processing the spindle bar stock into a spindle (1) finished product;
step 3: embedding an N-pole magnetic steel into a magnetic steel through hole (8) of the rotor core (6), and fixing the end face of the N-pole magnetic steel after aligning with the end face of the rotor core (6); embedding an S-pole magnetic steel into a magnetic steel through hole (8) adjacent to the N-pole magnetic steel, aligning and fixing the end face of the S-pole magnetic steel with the end face of the rotor core (6); sequentially arranging and embedding the magnetic steels (7) into the magnetic steel through holes (8) of the rotor core (6) according to the polarity sequence of N-S-N-S to form 1 rotor module;
step 4: after being connected in series, 1 or more rotor modules are pressed on a rotating shaft (1) through an oil press, and a locking nut (2) is installed on the rotating shaft (1) and locks the rotor modules to form a rotor assembly;
step 5: and sleeving the dynamic balance tool qualified in correction on the rotor assembly, then placing the rotor assembly on a dynamic balance instrument, and carrying out dynamic balance treatment on the rotor assembly by adopting a weighting method, so that the unbalance of the rotor assembly meets the requirement, wherein the weighting method is to place a filling core into a filling core mounting hole (9) of the rotor module by using the filling core as a filler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811471688.6A CN109412297B (en) | 2018-12-04 | 2018-12-04 | Balanced-ring-free embedded servo motor rotor assembly and manufacturing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811471688.6A CN109412297B (en) | 2018-12-04 | 2018-12-04 | Balanced-ring-free embedded servo motor rotor assembly and manufacturing method |
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| CN109412297A CN109412297A (en) | 2019-03-01 |
| CN109412297B true CN109412297B (en) | 2023-12-12 |
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| CN109973526B (en) * | 2019-04-26 | 2024-06-18 | 珠海格力电器股份有限公司 | Magnetic suspension bearing rotor assembly, motor and compressor |
| CN112467909A (en) * | 2020-11-30 | 2021-03-09 | 珠海格力电器股份有限公司 | Motor rotor, permanent magnet motor and electric automobile |
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| CN103545960A (en) * | 2013-11-04 | 2014-01-29 | 合肥荣事达三洋电器股份有限公司 | Permanent magnet motor rotor and manufacturing method thereof |
| CN207896752U (en) * | 2017-12-26 | 2018-09-21 | 宁波菲仕运动控制技术有限公司 | A kind of servo motor compact rotor structure |
| CN209056993U (en) * | 2018-12-04 | 2019-07-02 | 宁波菲仕自动化技术有限公司 | A kind of embedded servo motor rotor component of no balance ring |
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| JP6601788B2 (en) * | 2015-03-12 | 2019-11-06 | 山洋電気株式会社 | Rotor for motor, motor device, and method for manufacturing motor rotor |
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| CN103545960A (en) * | 2013-11-04 | 2014-01-29 | 合肥荣事达三洋电器股份有限公司 | Permanent magnet motor rotor and manufacturing method thereof |
| CN207896752U (en) * | 2017-12-26 | 2018-09-21 | 宁波菲仕运动控制技术有限公司 | A kind of servo motor compact rotor structure |
| CN209056993U (en) * | 2018-12-04 | 2019-07-02 | 宁波菲仕自动化技术有限公司 | A kind of embedded servo motor rotor component of no balance ring |
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