CN107819380B - Automobile generator rotor shaft and detection method for key slot symmetry degree thereof - Google Patents
Automobile generator rotor shaft and detection method for key slot symmetry degree thereof Download PDFInfo
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- CN107819380B CN107819380B CN201711293034.4A CN201711293034A CN107819380B CN 107819380 B CN107819380 B CN 107819380B CN 201711293034 A CN201711293034 A CN 201711293034A CN 107819380 B CN107819380 B CN 107819380B
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- 238000001514 detection method Methods 0.000 title claims description 22
- 210000000078 claw Anatomy 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 18
- 230000006870 function Effects 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 5
- 238000013139 quantization Methods 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 230000007547 defect Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/02—Shafts; Axles
- F16C3/023—Shafts; Axles made of several parts, e.g. by welding
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a rotor shaft of an automobile generator, which comprises: the small shaft is a cylinder and is arranged at one end of the rotor shaft of the generator, and short straight lines are axially arranged on the outer surface of the cylinder; a first bearing section which is a cylinder, one end of the first bearing section being close to the small shaft; the shaft shoulder is arranged at one end of the first bearing section, which is far away from the small shaft, and is a cylinder; the shaft shoulder is the largest part of the outer diameter of the rotor shaft of the generator; the nut end is arranged at one end of the generator rotor shaft, which is far away from the small shaft, and an inner hexagonal hole coaxial with the generator rotor shaft is formed in the end part of the nut end; the small shaft, the first bearing section, the shaft shoulder and the nut end are of a coaxial integrated structure, symmetrical key grooves are formed in two sides of the first bearing section and the shaft shoulder, and included angles formed by connecting symmetrical points of the symmetrical key grooves on the same cylindrical surface with a circle center are 180 degrees. The automobile generator rotor shaft overcomes the defect that the existing automobile generator rotor shaft is difficult to assemble.
Description
Technical Field
The invention belongs to the technical field of automobile generator rotor shafts, and particularly relates to an automobile generator rotor shaft and a method for detecting symmetry of key grooves of the automobile generator rotor shaft.
Background
The rotor shaft is an important part in the generator, and is provided with claw poles, collector rings, bearings and other parts and components for transmitting torque. The traditional rotor shaft is influenced by a structure, is inconvenient to assemble with a rotor, can generate stress concentration phenomenon after long-time use, generates deformation and even cracks, and has low service life. In particular, the nut end of the rotor shaft of the generator is not easy to detach after being provided with the fastening nut, and is inconvenient to wire and difficult to assemble. It is therefore necessary to design a rotor shaft of an automotive generator that is easy to assemble.
The generator rotor assembly is a high-speed rotating component that generates a rotating magnetic field while receiving torque. The key slot processing of the rotor shaft of the generator is one of the core processes of rotor shaft processing. If the symmetry degree of the rotor shaft can not meet the design requirement, the dynamic balance of the total name of the generator rotor is influenced, and the assembly of the rotor assembly is directly influenced. Therefore, the detection of the symmetry of the rotor shaft key slot becomes an important link of the detection of the generator rotor shaft. Therefore, when the part is processed, a reasonable detection method is adopted to control the symmetry according to the type of production scale.
Enterprises generally adopt a general measurement method, namely, a detection V-shaped block is matched with a dial indicator and a meter frame, and the detection V-shaped block is converted through a measurement reference (an inner hole is converted into an outer circle). Measuring the parts at the positions differing by 180 degrees, and judging the symmetry error of the key slot of the parts according to the reading difference of the dial indicator; the method has strong universality, complex operation and low measurement efficiency.
Therefore, the invention is necessary to provide a method which has higher accuracy and can rapidly detect whether the symmetry of the key slot of the rotor shaft of the generator is qualified.
Disclosure of Invention
The invention aims to overcome the defect that the existing automobile generator rotor shaft is difficult to assemble and provides an automobile generator rotor shaft which is easy to assemble.
The invention further aims to overcome the defects of large error and low efficiency of the existing automobile generator rotor shaft key slot symmetry detection, and provides a method which is high in accuracy and capable of rapidly detecting whether the generator rotor shaft key slot symmetry is qualified or not.
The technical scheme provided by the invention is as follows:
an automotive generator rotor shaft comprising:
the small shaft is a cylinder and is arranged at one end of the rotor shaft of the generator, and short straight lines are axially arranged on the outer surface of the cylinder;
a first bearing section which is a cylinder, one end of the first bearing section being close to the small shaft;
the shaft shoulder is arranged at one end of the first bearing section, which is far away from the small shaft, and is a cylinder; the shaft shoulder is the largest part of the outer diameter of the rotor shaft of the generator;
the nut end is arranged at one end of the generator rotor shaft, which is far away from the small shaft, and an inner hexagonal hole coaxial with the generator rotor shaft is formed in the end part of the nut end;
the small shaft, the first bearing section, the shaft shoulder and the nut end are of a coaxial integrated structure, symmetrical key grooves are axially formed in the two sides of the first bearing section and the two sides of the shaft shoulder, and included angles formed by connecting symmetrical points of the symmetrical key grooves on the same cylindrical surface with a circle center are 180 degrees.
Preferably, the generator rotor shaft further comprises a claw pole end which is a cylinder, the claw pole end is coaxially arranged at one end of the shaft shoulder far away from the first bearing section, and long straight lines are axially arranged on the outer surface of the claw pole end.
Preferably, the key groove comprises a straight section arranged in the first bearing section and an arc-surface section arranged in the shaft shoulder, and the joint of the straight section and the arc-surface section is in smooth transition.
Preferably, the cambered surface section extends to the claw pole section.
Preferably, the short straight lines on the outer surface of the small shaft are triangular tooth-shaped short straight lines, and the tooth-shaped angle of the short straight lines is 70-85 degrees.
Preferably, the long straight lines on the outer surface of the claw pole section are triangular tooth-shaped long straight lines, and the tooth-shaped angle is 75-90 degrees.
A detection method for symmetry of a rotor shaft key groove of an automobile generator comprises the following steps:
and detecting the symmetry degree of the key slot of the rotor shaft of the generator by using a key slot detection device and adopting a fuzzy control method: respectively converting the relative distance between the axial center line of the key groove check rib at two sides of the key groove detection device and the axial center line of the corresponding key groove and the symmetry degree of the key groove into a quantization grade in a fuzzy theory domain;
inputting the relative distance between the axial center line of the key groove check rib at two sides of the detection device and the axial center line of the corresponding key groove into a fuzzy control model, wherein the relative distance at one side is classified into 5 grades, and the relative distance at the other side is classified into 5 grades;
the output of the fuzzy control model is symmetry, and the symmetry is divided into 5 grades.
Preferably, the domain of the relative distance on one side is {0,4}, the domain of the relative distance on the other side is {0,4}, the domain of the symmetry is {0,1}, and the threshold is 0.51.
Preferably, the relative distance of one side is divided into 5 grades, and the fuzzy set is { N, NM, M, ML, L }; the relative distance of the other side is divided into 5 grades, and the fuzzy set is { L, LM, M, MH, H }; the symmetry is divided into 5 grades, and the fuzzy set is { S, SM, M, MB, B }; the membership functions are trapezoidal membership functions.
Preferably, the control rule in the fuzzy control model is:
if the relative distance LD between the axial centerline of one side key groove test rib and the axial centerline of its corresponding key groove 1 Is N, and the relative distance LD between the axial centerline of the other side key slot checking rib and the axial centerline of the corresponding key slot 2 If the key slot symmetry is L, the key slot symmetry is B, namely the key slot symmetry is good;
if the relative distance LD between the axial centerline of one side key groove test rib and the axial centerline of its corresponding key groove 1 Is L, the relative distance LD between the axial centerline of the other side key slot checking rib and the axial centerline of the corresponding key slot 2 If the key slot symmetry is H, the key slot symmetry is S, namely the key slot symmetry is not good;
if the symmetry is S or SM, the symmetry of the key slot of the rotor shaft of the generator is not good; if the symmetry is B or MB, the symmetry of the key slot of the rotor shaft of the generator is good; if the symmetry is "M", namely: the symmetry is a symmetry threshold, and if the key slot processing process is slightly changed, the switching between the good symmetry and the bad symmetry is necessarily formed.
The beneficial effects of the invention are as follows: the rotor shaft of the automobile generator is provided with the wiring key groove, so that the collector ring is convenient for mounting wiring; and an inner hexagonal hole is formed in the nut end, and the inner hexagonal wrench is used for providing reactive torque so as to facilitate the disassembly of the fastening nut.
The method for detecting the symmetry of the key slot of the rotor shaft of the automobile generator can accurately and rapidly detect whether the symmetry of the key slot of the rotor shaft of the generator is qualified or not, and overcomes the defects of large error and low efficiency in the detection of the symmetry of the key slot of the rotor shaft of the existing automobile generator.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a rotor shaft of an automotive generator according to the present invention.
Fig. 2 is a partial top view of a rotor shaft of an automotive generator according to the present invention.
Fig. 3 is a side view of the nut end of the rotor shaft of the automotive generator according to the invention.
Fig. 4 is a schematic diagram illustrating the fit of the key slot detecting device and the rotor shaft of the automobile generator according to the present invention.
Fig. 5 is a schematic cross-sectional view of a key slot detecting device according to the present invention.
FIG. 6 shows an LD according to the present invention 1 (LD 2 ) Membership function diagram.
Fig. 7 is a graph of DC membership functions according to the present invention.
Detailed Description
The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
As shown in fig. 1-3, the present invention provides an automotive generator rotor shaft. The automobile generator rotor shaft is a solid shaft, which sequentially comprises a small shaft 110, a first bearing section 120, a shaft shoulder 130, a claw pole section 140, a second bearing section 150 and a nut end 160 from one end to the other end, wherein the small shaft 110, the first bearing section 120, the shaft shoulder 130, the claw pole section 140, the second bearing section 150 and the nut end 160 are all coaxial cylinders, an inner hexagonal hole 161 coaxial with the generator rotor shaft is formed in the end part of the nut end 160, and a fastening nut is installed outside the nut end 160. The outer surface of the small shaft 110 is provided with triangular tooth-shaped short straight lines along the axial direction; the tooth form angle of the short straight lines is 70-85 degrees; the small shaft 110 is provided with an internally threaded bore 111 at the end. The outer diameter of the shoulder 130 is greatest on the generator rotor shaft, which serves as an axial location for the generator rotor shaft claw pole mounting. The first bearing section 120 is provided with a tool retracting groove 121 at the connection with the shaft shoulder 130 to facilitate tool withdrawal.
Symmetrical key grooves 180 are axially formed in the two sides of the first bearing section 120 and the shaft shoulder 130, and an included angle formed by connecting a symmetrical point of the symmetrical key groove on the same cylindrical surface with a circle center is 180 degrees. The key groove 180 includes a straight section 181 provided in the first bearing section 120 and an arc section 182 provided in the shoulder, and the junction between the straight section 181 and the arc section 182 is a smooth transition, and the arc 182 extends to the claw-pole section 140. The claw pole section 140 is used for installing the claw pole, the outer surface of the claw pole section 140 is axially provided with triangular tooth-shaped long straight lines, tooth-shaped angles of the long straight lines are 75-90 degrees, the claw pole section 140 has certain strength and hardness through heat treatment, so that the claw pole section has cutting capability, and when the claw pole is assembled with the shaft section, the claw pole can bear larger torque in the circumferential direction of the rotor shaft through scraping action and interference fit of the long straight lines on an inner hole of the claw pole.
Two collecting rings are arranged on the outer side of the small shaft 110 side by side along the axis direction, the small shaft 110 has certain strength and hardness through heat treatment, and when the collecting rings are assembled with the small shaft 110, the collecting rings can bear certain torque in the circumferential direction of the rotor shaft through scraping action and interference fit of short straight lines on the inner holes of the collecting rings; the two collecting rings are respectively connected with two end wires of the claw pole inner winding, the key grooves 180 on the two sides of the rotor shaft of the generator are two end wire wiring grooves, the wiring is regular due to the arrangement of the key grooves 180, and the collecting ring wires are protected. A first bearing segment 120, mounting a bearing; the second bearing end 150 is mounted with bearings and pulleys. The inner hexagonal hole 161 is arranged at the nut end 160 of the rotor shaft of the generator, so that the installation of the fastening nut can be facilitated. The inner hexagonal wrench is in clearance fit with the inner hexagonal hole 161, so that the nut can be more conveniently assembled and disassembled.
As shown in fig. 4 to 5, the key slot detecting apparatus of the present invention includes: the small shaft positioning cylinder 210 is a cylinder, a cylindrical small shaft accommodating cavity 211 is coaxially arranged in the cylinder, the small shaft accommodating cavity is provided with two ends which are open, and the small shaft positioning cylinder 210 is in clearance fit with the small shaft 110 of the generator rotor shaft so that the small shaft 110 of the generator rotor shaft can extend into or withdraw from the small shaft accommodating cavity 211; the shoulder positioning ring 220 is an annular cylinder, and the shoulder positioning ring 220 is in clearance fit with the outer wall of the shoulder 130 of the generator rotor shaft.
One end of the key slot checking rib 230 is fixedly connected to the end surface of the small shaft positioning cylinder 210, and the other end of the key slot checking rib is fixedly connected to the inner wall of the shaft shoulder positioning ring 220; the two key groove test ribs 230 are parallel to the axis of the small shaft positioning cylinder 210 and are symmetrically arranged in the radial direction of 180 degrees according to the axis. The connection part between the key groove inspection rib 230 and the small shaft positioning cylinder 210 is in a straight strip shape, the outer side surface is a partial cylindrical surface, the inner side surface is a plane, and the two sides are planes. The straight bar is parallel to the axis of the small shaft positioning cylinder 210, the joint of the key groove checking rib 230 and the inner part of the shoulder shaft positioning ring is in a circular arc shape, and the straight bar and the circular arc shape are in smooth transition. The key groove test rib 230 is in clearance fit with the generator rotor shaft key groove 180.
The invention provides a method for detecting the symmetry of a key slot of a rotor shaft of an automobile generator, which comprises the following steps:
and detecting the symmetry degree of the key slot of the rotor shaft of the generator by using a key slot detection device and adopting a fuzzy control method: the small shaft 110 is inserted into the small shaft positioning cavity 211, the axis of the small shaft positioning cavity 211 is controlled to coincide with the axis of the small shaft 110, and the distance between one side edge of one side check rib and the corresponding key groove side edge is controlledWherein d 1 For the width of key slot d 1 The width of the ribs was checked for keyways. The end face 212 of the small shaft locating cylinder 210 connecting the keyway test rib 230 abuts the end face 121 of the first bearing section 120 of the generator rotor shaft. And respectively acquiring the relative distances between the axial center lines of the key groove inspection ribs at two sides of the detection device and the axial center lines of the corresponding key grooves by adopting a laser side position instrument.
Respectively converting the relative distance between the axial center line of the key groove check rib at two sides of the detection device and the axial center line of the corresponding key groove and the symmetry degree of the key groove into a quantization grade in a fuzzy theory domain; inputting the relative distance between the axial center line of the key groove check rib at two sides of the detection device and the axial center line of the corresponding key groove into a fuzzy control model, wherein the relative distance at one side is classified into 5 grades, and the relative distance at the other side is classified into 5 grades; the output of the fuzzy control model is symmetry, and the symmetry is divided into 5 grades.
The fuzzy control model respectively uses the relative distance (LD) between the axial midline of the two-side key slot checking ribs and the axial midline of the corresponding key slot 1 ) (LD) 2 ) As an input variable, symmetry (DC) is used as an output variable; if the symmetry reaches the set threshold, judging that the symmetry is qualified; the threshold is 0.51 in this embodiment.
Input variable LD 1 And LD 2 The argument is {0,1.8,2.15,2.5,2.85,3.2,4}, and the argument of the output variable DC is {0,0.2,0.35,0.5,0.65,0.8,1}; input variable LD 1 Is: n (small), NM (small), M (medium), ML (large), L (large), input variable LD 2 Is: l (small), LM (small), M (medium), MH (large), H (large), fuzzy language set of output variable DC is: s (poor), SM (poor), M (medium), MB (good), B (good); LD (laser diode) 1 And LD 2 The quantization factors of (a) are alpha respectively ld1 ＝1.0，α ld2 ＝1.0。LD 1 And LD 2 A trapezoidal membership function is adopted (as shown in fig. 6); the membership function of DC also employs a trapezoidal membership function (as shown in FIG. 7).
As shown in table 1, the fuzzy control rules of the key slot symmetry detection fuzzy logic control model are given, namely: describing controller input variables (LD) in a fuzzy language 1 And LD 2 ) Relationship with output variable (DC).
TABLE 1 fuzzy control rules
If the relative distance LD between the axial centerline of one side key groove test rib and the axial centerline of its corresponding key groove 1 And the relative distance LD between the axial midline of the other side key groove checking rib and the axial midline of the corresponding key groove is N (small) " 2 When "L (small)", the degree of symmetry of the key groove is "B (good)", that is, the degree of symmetry of the key groove is good.
If the relative distance LD between the axial centerline of one side key groove test rib and the axial centerline of its corresponding key groove 1 And the relative distance LD between the axial midline of the other side key groove checking rib and the axial midline of the corresponding key groove is L (big) " 2 When "H (large)", the degree of symmetry of the key groove is "S (bad)", that is, the degree of symmetry of the key groove is not good.
If the symmetry is "S (bad) or smaller SM (bad)", the generator rotor shaft key slot symmetry is not good (failed); if the symmetry is 'B (good) or MB (good)', the symmetry of the key slot of the rotor shaft of the generator is good (qualified); if the symmetry is "M (medium)", namely: the symmetry is a symmetry threshold, and if the key slot processing process is slightly changed, the switching between the good symmetry and the bad symmetry is necessarily formed.
In summary, the rotor shaft of the automobile generator provided by the invention is provided with the wiring key groove, so that the wiring installation of the collecting ring is facilitated; and an inner hexagonal hole is formed in the nut end, so that the nut can be conveniently disassembled.
The method for detecting the symmetry of the key slot of the rotor shaft of the automobile generator can accurately and rapidly detect whether the symmetry of the key slot of the rotor shaft of the generator is qualified or not, and overcomes the defects of large error and low efficiency in the detection of the symmetry of the key slot of the rotor shaft of the existing automobile generator.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (10)
1. An automotive generator rotor shaft comprising:
the small shaft is a cylinder and is arranged at one end of the rotor shaft of the generator, and short straight lines are axially arranged on the outer surface of the cylinder;
a first bearing section which is a cylinder, one end of the first bearing section being close to the small shaft;
the shaft shoulder is arranged at one end of the first bearing section, which is far away from the small shaft, and is a cylinder; the shaft shoulder is the largest part of the outer diameter of the rotor shaft of the generator;
the nut end is arranged at one end of the generator rotor shaft, which is far away from the small shaft, and an inner hexagonal hole coaxial with the generator rotor shaft is formed in the end part of the nut end;
the small shaft, the first bearing section, the shaft shoulder and the nut end are of a coaxial integrated structure, symmetrical key grooves are axially formed in the two sides of the first bearing section and the two sides of the shaft shoulder, and included angles formed by connecting symmetrical points of the symmetrical key grooves on the same cylindrical surface with a circle center are 180 degrees.
2. The automotive generator rotor shaft of claim 1, further comprising a claw pole end which is cylindrical and coaxially disposed at an end of the shaft shoulder remote from the first bearing section, the outer surface of the claw pole end being axially provided with long straight lines.
3. The automotive generator rotor shaft of claim 2, wherein the keyway comprises a straight section open in the first bearing section and a cambered section open in the shoulder, and the junction of the straight section and the cambered section is a smooth transition.
4. A motor-generator rotor shaft according to claim 3, characterized in that the cambered surface section extends to the claw-pole section.
5. The automotive generator rotor shaft of claim 1, wherein the short straight lines of the small shaft outer surface are triangular tooth-shaped short straight lines having a tooth-shaped angle of 70 ° to 85 °.
6. A rotor shaft for an automotive generator according to claim 3, characterized in that the long straight lines of the outer surface of the claw-pole segment are long straight lines of triangular tooth shape, the tooth shape angle of which is 75 ° to 90 °.
7. The method for detecting the symmetry of the key slot of the rotor shaft of the automobile generator is characterized by comprising the following steps of:
the key slot detection device is used for detecting the symmetry degree of the key slot of the rotor shaft of the generator by adopting a fuzzy control method: respectively converting the relative distance between the axial center line of the key groove check rib at two sides of the key groove detection device and the axial center line of the corresponding key groove and the symmetry degree of the key groove into a quantization grade in a fuzzy theory domain;
inputting the relative distance between the axial center line of the key groove check rib at two sides of the detection device and the axial center line of the corresponding key groove into a fuzzy control model, wherein the relative distance at one side is classified into 5 grades, and the relative distance at the other side is classified into 5 grades;
the output of the fuzzy control model is symmetry, and the symmetry is divided into 5 grades.
8. The method for detecting symmetry of a rotor shaft key groove of an automotive generator according to claim 7, wherein the domain of the relative distance on one side is {0,4}, the domain of the relative distance on the other side is {0,4}, the domain of the symmetry is {0,1}, and the threshold value is 0.51.
9. The method for detecting symmetry of a rotor shaft key groove of an automotive generator according to claim 8, wherein the relative distance of one side is classified into 5 classes, and the fuzzy set is { N, NM, M, ML, L }; the relative distance of the other side is divided into 5 grades, and the fuzzy set is { L, LM, M, MH, H }; the symmetry is divided into 5 grades, and the fuzzy set is { S, SM, M, MB, B }; the membership functions are trapezoidal membership functions.
10. The method for detecting symmetry of a rotor shaft key groove of an automotive generator according to claim 9, wherein the control rule of the fuzzy control model is:
if the relative distance LD between the axial centerline of one side key groove test rib and the axial centerline of its corresponding key groove 1 Is N, and the relative distance LD between the axial centerline of the other side key slot checking rib and the axial centerline of the corresponding key slot 2 If the key slot symmetry is L, the key slot symmetry is B, namely the key slot symmetry is good;
if the relative distance LD between the axial centerline of one side key groove test rib and the axial centerline of its corresponding key groove 1 Is L, the relative distance LD between the axial centerline of the other side key slot checking rib and the axial centerline of the corresponding key slot 2 If the key slot symmetry is H, the key slot symmetry is S, namely the key slot symmetry is not good;
if the symmetry is S or SM, the symmetry of the key slot of the rotor shaft of the generator is not good; if the symmetry is B or MB, the symmetry of the key slot of the rotor shaft of the generator is good; if the symmetry is "M", namely: the symmetry is a symmetry threshold, and if the key slot processing process is slightly changed, the switching between the good symmetry and the bad symmetry is necessarily formed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711293034.4A CN107819380B (en) | 2017-12-08 | 2017-12-08 | Automobile generator rotor shaft and detection method for key slot symmetry degree thereof |
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| CN201711293034.4A CN107819380B (en) | 2017-12-08 | 2017-12-08 | Automobile generator rotor shaft and detection method for key slot symmetry degree thereof |
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| CN109357647B (en) * | 2018-09-29 | 2024-05-24 | 观为监测技术无锡股份有限公司 | Wind power equipment positioning monitoring system and method |
| CN111964628B (en) * | 2020-09-21 | 2022-01-04 | 台州市东部数控设备有限公司 | Automobile generator rotor size measuring device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246705A (en) * | 2016-07-26 | 2016-12-21 | 广州市锐美汽车零部件有限公司 | A kind of electric motor of automobile rotating shaft and processing method thereof |
| CN107366676A (en) * | 2017-08-21 | 2017-11-21 | 苏州威富达精密机械制造有限公司 | A kind of slender type armature spindle |
| CN207518423U (en) * | 2017-12-08 | 2018-06-19 | 锦州万友机械部件有限公司 | A kind of automobile generator rotor axis |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246705A (en) * | 2016-07-26 | 2016-12-21 | 广州市锐美汽车零部件有限公司 | A kind of electric motor of automobile rotating shaft and processing method thereof |
| CN107366676A (en) * | 2017-08-21 | 2017-11-21 | 苏州威富达精密机械制造有限公司 | A kind of slender type armature spindle |
| CN207518423U (en) * | 2017-12-08 | 2018-06-19 | 锦州万友机械部件有限公司 | A kind of automobile generator rotor axis |
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