CN110631495B - Curved surface gap detection method for magneto-electric speed sensor - Google Patents
Curved surface gap detection method for magneto-electric speed sensor Download PDFInfo
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- CN110631495B CN110631495B CN201911022963.0A CN201911022963A CN110631495B CN 110631495 B CN110631495 B CN 110631495B CN 201911022963 A CN201911022963 A CN 201911022963A CN 110631495 B CN110631495 B CN 110631495B
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- speed sensor
- curved surface
- magneto
- magnetoelectric
- laser displacement
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- 238000001514 detection method Methods 0.000 title claims abstract description 40
- 238000006073 displacement reaction Methods 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000005259 measurement Methods 0.000 claims description 11
- 230000007246 mechanism Effects 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 9
- 229910000679 solder Inorganic materials 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000013519 translation Methods 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
- G01P21/02—Testing or calibrating of apparatus or devices covered by the preceding groups of speedometers
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The method for detecting the curved surface gap of the magneto-electric speed sensor comprises the following steps: 1) Simulating an actual mounting surface of the magnetoelectric speed sensor, and fixing the magnetoelectric speed sensor to be tested at the mounting surface; 2) The driver is used for enabling the laser displacement sensor to rotate along the detection surface of the magnetoelectric speed sensor by taking the circle center of the virtual curved surface of the magnetoelectric speed sensor as the rotation center, and a speed measuring gear of the magnetoelectric speed sensor is simulated and detected; 3) Moving the laser displacement sensor to the measuring position of the magnetoelectric speed sensor to be measured, rotating the laser displacement sensor according to the specified speed, reading the detection data from the laser displacement sensor detection head to the virtual curved surface of the magnetoelectric speed sensor in real time, calculating a gap value, and determining the maximum and minimum gap values; 4) And if the maximum clearance value and the minimum clearance value meet the specified requirements, judging that the magneto-electric speed sensor detects that the curved surface is qualified, and if the maximum clearance value and the minimum clearance value exceed the specified requirements, judging that the magneto-electric speed sensor detects that the curved surface is unqualified.
Description
Technical Field
The invention relates to a detection method of a curved surface gap of a magneto-electric speed sensor.
Background
As shown in fig. 1, the magnetoelectric speed sensor 1 comprises 4 sections of iron cores 10, the heads of the 4 sections of iron cores are respectively provided with short arc lines 11, 12, 13 and 14, and form a virtual curved surface 15 for testing, in practical use, a speed measuring gear is a magnetic field induction component nested on a wheel shaft and rotates synchronously with a wheel, the magnetoelectric speed sensor is arranged on the side surface of the speed measuring gear, the virtual curved surface 15 at the front end of the magnetoelectric speed sensor keeps a certain gap with the top surface of the speed measuring gear, when the wheel rotates, the speed measuring gear cuts a magnetic field, the sensor transmits pulse signals, and the running speed of a train can be accurately reflected according to the pulse signals; therefore, gap detection is an indispensable link in the production of the magnetoelectric speed sensor, the accuracy of the gap detection determines the performance and quality of the magnetoelectric speed sensor, and the speed of detection time determine the manufacturing efficiency of products, so that the device for automatically detecting the gap of the magnetoelectric speed sensor has decisive influence on the performance, quality and yield of the products.
As shown in fig. 2 and 3, gap detection of the conventional magneto-electric speed sensor adopts an indirect measurement mode and is operated fully manually. Firstly, fixing a solder wire 4 on a virtual curved surface 15 of a magneto-electric speed sensor product, gradually compressing and deforming the solder wire in the process that the curved surface of the product approaches to a fixed curved surface of a measuring tool 5, and finally indirectly obtaining a gap value by detecting the thickness of the solder wire 4. In order to measure the distance over the whole core segment, two upper and lower wires 4 are used for the measurement. The detection method has the following defects:
1) The testing efficiency is lower, the soldering tin wire needs to be manually fixed on a product curved surface formed by 4 sections of iron cores 10, then the product is held by hand, the moving process of the movable curved surface is realized through the tool 5, and finally the deformation amount of the soldering tin wire needs to be manually detected and recorded one by one.
2) The reliability of the data is not high, a certain degree of rebound exists after the solder wire is pressed, and the data tracking is difficult to carry out by manual recording; the measurement result is easy to cause and cannot reflect the real gap, and the quality judgment of the product is influenced.
3) The method has the advantages that the requirement on the skill of the testers is high, the interpersonal difference exists in the manual reading deformation, the solder wire is soft in material, and the strength in the caliper measurement process is the most core element influencing the measurement accuracy, so that the requirement on the skill of the testers is very high.
4) The sensor inductance core 10 is subject to force and is easily damaged.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects in the prior art and providing a curved surface gap detection method of a magneto-electric speed sensor, which can automatically detect the gap of a product and accurately and rapidly detect the gap value.
The invention solves the problems by adopting the following technical scheme: the method for detecting the curved surface gap of the magneto-electric speed sensor comprises the following steps: 1) Simulating an actual mounting surface of the magnetoelectric speed sensor, and fixing the magnetoelectric speed sensor to be tested at the mounting surface; 2) The driver is used for enabling the laser displacement sensor to rotate along the detection surface of the magnetoelectric speed sensor by taking the center of a virtual curved surface of the magnetoelectric speed sensor as a rotation center, so as to simulate a speed measuring gear of the magnetoelectric speed sensor; 3) Moving the laser displacement sensor to the measuring position of the magnetoelectric speed sensor to be measured, rotating the laser displacement sensor according to the specified speed, reading the detection data from the laser displacement sensor detection head to the magnetoelectric speed sensor virtual curved surface in real time, calculating a gap value, and determining the maximum and minimum gap values; 4) And if the maximum clearance value and the minimum clearance value meet the specified requirements, judging that the magneto-electric speed sensor detects that the curved surface is qualified, and if the maximum clearance value and the minimum clearance value exceed the specified requirements, judging that the magneto-electric speed sensor detects that the curved surface is unqualified.
Better, above-mentioned laser displacement sensor still can be removed by horizontal migration actuating mechanism, can conveniently adjust the axial position of laser displacement sensor detecting head relative and magneto-electric speed sensor curved surface that needs the test like this during the test to can measure the distance between magneto-electric speed sensor virtual detection face and the simulation speed measuring gear on the different cross-sections, guarantee that whole section measurement iron core can accord with the requirement.
Preferably, the laser displacement sensor detection head data are calculated by the controller and judge whether the magnetoelectric speed sensor to be tested is qualified or not according to a preset value, so that the laser displacement sensor detection head data can be fully automated.
Compared with the prior art, the invention has the advantages that:
(1) The non-contact type laser displacement sensor is adopted, so that the product is not contacted with any object in the detection process, and the product is not damaged.
(2) The detection precision of the laser displacement sensor is far higher than the detection requirement of products, thereby ensuring the accuracy and the repeatability of detection data.
(3) The measuring distance is automatically finished by the laser displacement sensor, manual measurement is not needed, the requirement on the skill of operators is low, and the labor intensity is greatly reduced.
Drawings
Fig. 1 is a schematic view of a curved surface of a conventional magneto-electric speed sensor.
Fig. 2 is a schematic plan view of a conventional curved surface gap detection method of a magneto-electric speed sensor.
Fig. 3 is a schematic perspective view of a conventional curved surface gap detection method of a magneto-electric speed sensor.
Fig. 4 is a measurement schematic diagram of a curved surface gap detection method of a magneto-electric speed sensor according to an embodiment of the invention.
Fig. 5 is a schematic diagram of another cross section measurement of the curved surface gap detection method of the magneto-electric speed sensor according to the embodiment of the invention.
Detailed Description
The invention will be further described with reference to the drawings and examples.
As shown in fig. 4 and 5, the method for detecting the curved surface gap of the magneto-electric speed sensor comprises the following steps:
1) Simulating an actual mounting surface of the magnetoelectric speed sensor, and fixing the magnetoelectric speed sensor 1 to be tested at the mounting surface;
2) The rotating motor shaft 31 is used as a rotation center, a speed measuring gear for simulating and detecting the magneto-electric speed sensor together with the laser displacement sensor 2 is used for fixing the laser displacement sensor 2 on the rotating motor shaft 31, and the rotating motor 3 can drive the laser displacement sensor 2 and a detection head thereof to rotate along a detection surface 15 of the magneto-electric speed sensor, as shown in fig. 1;
3) The translation motor 6 is used for moving the detection head of the laser displacement sensor 2 to the gap measurement positions of the cambered surfaces 11, 12, 13 and 14 of the magneto-electric speed sensor 1 to be detected through the transmission mechanism 7, rotating the detection head of the laser displacement sensor according to a specified speed, reading detection data of the distance H between the laser displacement sensor and the cambered surfaces 11, 12, 13 and 14 of the magneto-electric speed sensor in real time, calculating a gap value, and determining a maximum gap value and a minimum gap value;
4) And if the maximum clearance value and the minimum clearance value meet the specified requirements, judging that the magneto-electric speed sensor detects that the curved surface is qualified, and if the maximum clearance value and the minimum clearance value exceed the specified requirements, judging that the magneto-electric speed sensor detects that the curved surface is unqualified.
Of course, the rotating electric machine 3 may be other commonly used drivers, such as a hydraulic motor.
Since the head short arc 11 of the iron core shown in fig. 1 corresponds to a section in the radial direction and has a section in the axial direction, each section in the axial direction of the iron core cannot keep the same head short arc 11 on each section due to processing reasons, and therefore, gaps of head short arcs of other sections of the iron core need to be detected, so that the whole section of the iron core can be ensured to meet requirements. For cooperation detection, the detection head of the laser displacement sensor 2 can be moved by the horizontal movement driving mechanism, so that the position between the detection head of the laser displacement sensor and the curved surface of the magnetoelectric speed sensor to be tested can be conveniently adjusted during the test, the distances between the curved surfaces of the magnetoelectric speed sensors on different planes and the measuring shaft can be measured, and the whole section of measuring iron core can meet the requirements.
The laser displacement sensor detection head data can be calculated by the controller and can judge whether the magnetoelectric speed sensor to be tested is qualified or not according to a preset value, so that the full automation can be realized.
The translation motor 6 and the transmission mechanism 7 may be other conventional translation driving mechanisms, such as a cylinder, an oil cylinder, etc., which will not be described in detail herein.
Claims (3)
1. The method for detecting the curved surface gap of the magneto-electric speed sensor is characterized by comprising the following steps of: the method comprises the following steps: 1) Simulating an actual mounting surface of the magnetoelectric speed sensor, and fixing the magnetoelectric speed sensor to be tested at the mounting surface; 2) The driver is used for enabling the laser displacement sensor to rotate along the detection surface of the magnetoelectric speed sensor by taking the center of a virtual curved surface of the magnetoelectric speed sensor as a rotation center, so as to simulate a speed measuring gear of the magnetoelectric speed sensor; 3) Moving a laser displacement sensor detection head to a measurement position of a magneto-electric speed sensor to be measured, rotating the laser displacement sensor detection head according to a specified speed, reading detection data from the laser displacement sensor to a virtual curved surface of the magneto-electric speed sensor in real time, calculating a gap value, and determining a maximum gap value and a minimum gap value; 4) And if the maximum clearance value and the minimum clearance value meet the specified requirements, judging that the magneto-electric speed sensor detects that the curved surface is qualified, and if the maximum clearance value and the minimum clearance value exceed the specified requirements, judging that the magneto-electric speed sensor detects that the curved surface is unqualified.
2. The method for detecting the curved surface gap of the magneto-electric speed sensor according to claim 1, wherein the method comprises the following steps: the laser displacement sensor is moved by a horizontal movement driving mechanism.
3. The magneto-electric speed sensor curved surface gap detection method according to claim 1 or 2, characterized in that: and the data of the detection head of the laser displacement sensor is calculated by the controller and whether the magnetoelectric speed sensor to be tested is qualified or not is judged according to a preset value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911022963.0A CN110631495B (en) | 2019-10-25 | 2019-10-25 | Curved surface gap detection method for magneto-electric speed sensor |
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| CN201911022963.0A CN110631495B (en) | 2019-10-25 | 2019-10-25 | Curved surface gap detection method for magneto-electric speed sensor |
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| CN110631495A CN110631495A (en) | 2019-12-31 |
| CN110631495B true CN110631495B (en) | 2024-05-14 |
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| CN113640538A (en) * | 2020-04-27 | 2021-11-12 | 江苏利核仪控技术有限公司 | Magnetoelectric Speed Sensor and Speed Detection System |
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| CN110631495A (en) | 2019-12-31 |
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