CN104807393A - Vortex thickness measuring probe - Google Patents
Vortex thickness measuring probe Download PDFInfo
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- CN104807393A CN104807393A CN201510154641.7A CN201510154641A CN104807393A CN 104807393 A CN104807393 A CN 104807393A CN 201510154641 A CN201510154641 A CN 201510154641A CN 104807393 A CN104807393 A CN 104807393A
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- eddy current
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Abstract
The invention relates to a vortex thickness measuring probe. The vortex thickness measuring probe comprises a handle, a vortex sensor, a trigger, a pressure spring and a spring plate; the vortex sensor is arranged at the end part of the handle; the trigger is mounted on the handle by a twisting manner; the pressure spring is arranged in the trigger; two ends of the pressure spring are respectively pressed on the trigger and the handle; one end of the spring plate is fixed on the trigger and while the other end of the spring plate is opposite to the measuring end of the vortex sensor; a signal wire of the vortex sensor passes through the inner part of the handle and is connected with a control system. The vortex thickness measuring probe is designed into a clamp type operation handle and can be operated by one hand, so that the field use particularly applies; the spring plate enables an agate plate at the bottom part of the vortex sensor to be clung to a hollow blade under constant pressure; a measuring head can be slightly moved to finish the thickness scanning of the whole measuring surface, so that the repeatability and consistency of the measuring result can be ensured; the vortex thickness measuring probe has the characteristics of being high in measuring resolution ratio, fast to measure, convenient to operate, high in accuracy, stable and reliable.
Description
Technical field
The present invention relates to a kind of Thicknesser probe, especially a kind of eddy current Thicknesser probe, for the in-site measurement of hollow blade wall thickness.
Background technology
Blade of aviation engine is high temperature resistant monocrystal material hot investment casting, blade is generally hollow-core construction, vanelets wall thickness parameter is 0.2-3mm scope, because engine blade contour shape is very complicated, the curvature of convex surface and concave surface is all larger, employing three coordinate measuring machines etc. are consuming time longer, are not suitable for the requirement of blade production line Site Detection.Current measuring method generally uses ultrasonic wave measuring method, and that the diameter due to existing ultrasonic probe is minimum is Φ 6mm, can not differentiate the detect thickness of below 0.5mm.Because blade surface Curvature varying is large, larger-diameter ultrasonic probe cannot be fitted completely with blade surface, and cause measuring error large, measuring process is loaded down with trivial details, and efficiency is very low.Simultaneously, curvature all more complicated of blade of aviation engine outline convex surface and concave surface, adopt the method that contact slide is measured, the manually mode of operation of pressing and mobile eddy current sensor, because the pressure dynamics of Manual press changes greatly, be difficult to ensure that eddy current sensor overlaps with measurement point normal to a surface, these all can cause very large measuring error, even cannot complete measurement.
Summary of the invention
The object of this invention is to provide a kind of eddy current Thicknesser probe, be applicable to the requirement of blade production line Site Detection, the pressure dynamics due to Manual press is avoided to change the measuring error problem greatly caused greatly, have Measurement Resolution high, measure rapidly, feature that handled easily, accuracy are high, reliable and stable, to solve the technical barrier in aeromotor hollow blade Site Detection.
Technical scheme of the present invention is, eddy current Thicknesser probe comprises handle, eddy current sensor, trigger, pressure spring, spring leaf, eddy current sensor is arranged on the end of handle, trigger is arranged on handle by the mode of hinge joint, trigger inside is provided with pressure spring, and the two ends of pressure spring are pressed on trigger and handle respectively, and spring leaf one end is fixed on trigger, the other end is relative with the measuring junction of eddy current sensor, and the signal wire of eddy current sensor passes from handle inner and is connected with control system.Described handle be also provided with temperature sensor and measure button, the signal wire of temperature sensor and measurement button to pass from handle inner and to be connected with control system.Described eddy current sensor comprises magnetic core, drive coil, agate plate, metal-coating, coil is arranged on magnetic core, metal-coating is tubular, bottom is fixed on handle, magnetic core and coil are arranged on metal-coating inside, the end winding support of magnetic core has agate plate, and the openend of metal-coating extends to agate plate position.Described magnetic core be also provided with measuring coil and compensating coil and lay respectively at drive coil both sides, measuring coil is positioned at agate plate direction, and described measuring coil and compensating coil are connected in series, and the number of turn is identical, and rotation direction is contrary; Described drive coil, measuring coil and compensating coil outside are also provided with coil protect lining.Described magnetic core size is 2.5 × 2.5 × 20mm, and material is ferrite.
Probe designs is become clamp operating grip by the present invention, one-handed performance, is very applicable to onsite application situation.Spring leaf makes the agate plate bottom eddy current sensor and hollow blade fit with constant pressure, and traverse measurement head gently can complete the thickness scanning to whole measuring surface, ensure that repeatability and the consistance of measurement result.Operator, while scanning, presses measurement button and the measurement result of this point can be stored into data list, apply fast very convenient, under the prerequisite ensureing measuring accuracy, substantially increase detection efficiency.Probe is installed temperature sensor, temperature compensation has been carried out to in-site measurement signal, substantially increases measuring accuracy, widened range of application.Have employed long core structure, drive coil and measuring coil are directly wrapped on magnetic core, improve the penetration capacity of eddy current sensor, expand measurement range, reduce the diameter of eddy current coil; Measuring coil and compensating coil be coaxial oppositely coiling on magnetic core, is connected in series, and environment electromagnetics interference is contrary on the impact of two coils, substantially reduces the impact of temperature parameter on eddy current sensor after two coils connected in series superpositions.Agate plate improves the wearing quality of sensor, increases the service life; Metal-coating is as the fixed support of sensor, its openend extends to agate plate position, this novel packaged type limits the magnetic fields point of drive coil, when measuring curved surface of high curvature, effectively can reduce the induction region of eddy current, and then reduce the impact of the crown eddy current because of curved surface generation, improve measuring accuracy.The present invention is by the design of hommization, simple to operate, be applicable to applying on a production line, and avoid the pressure dynamics due to Manual press to change the measuring error problem greatly caused greatly, have Measurement Resolution high, measure rapidly, feature that handled easily, accuracy are high, reliable and stable, widespread use on the production line of the blade workshop of Aviation Enterprise, result of use is good.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of eddy current sensor;
Fig. 3 is that existing eddy current sensor produces crown eddy current schematic diagram;
Fig. 4 is that eddy current sensor of the present invention produces crown eddy current schematic diagram.
Embodiment
As shown in the figure, eddy current Thicknesser probe comprises handle 1, eddy current sensor 2, trigger 3, pressure spring 4, spring leaf 5, eddy current sensor 2 is arranged on the end of handle 1, trigger 3 is arranged on handle 1 by the mode of hinge joint, trigger 3 inside is provided with pressure spring 4, the two ends of pressure spring 4 are pressed on trigger 3 and handle 1 respectively, spring leaf 5 one end is fixed on trigger 3, the other end is relative with the measuring junction of eddy current sensor 2, and the signal wire of eddy current sensor 2 passes from handle 1 inside and is connected with control system.Described handle 1 be also provided with temperature sensor 6 and measure button 7, temperature sensor 6 passes with the signal wire measuring button 7 from handle 1 inside and is connected with control system.Described eddy current sensor 2 comprises magnetic core 21, drive coil 22, agate plate 23, metal-coating 24, drive coil 22 is arranged on magnetic core 21, metal-coating 24 is tubular, bottom is fixed on handle 1, it is inner that magnetic core 21 and drive coil 22 are arranged on metal-coating 24, the end winding support of magnetic core has agate plate 23, and the openend of metal-coating 24 extends to agate plate 23 position.Described magnetic core 21 be also provided with measuring coil 26 and compensating coil 27 and lay respectively at drive coil 22 both sides, measuring coil 26 is positioned at agate plate 25 direction, and described measuring coil 26 and compensating coil 27 are connected in series, and the number of turn is identical, and rotation direction is contrary; Described drive coil 22, measuring coil 26 and compensating coil 27 outside are also provided with coil protect lining.Described magnetic core 21 is of a size of 2.5 × 2.5 × 20mm, and material is ferrite.
Claims (6)
1. an eddy current Thicknesser probe, it is characterized in that, described probe comprises handle (1), eddy current sensor (2), trigger (3), pressure spring (4), spring leaf (5), eddy current sensor (2) is arranged on the end of handle (1), trigger (3) is arranged on handle (1) by the mode of hinge joint, trigger (3) inside is provided with pressure spring (4), the two ends of pressure spring (4) are pressed on trigger (3) and handle (1) respectively, spring leaf (5) one end is fixed on trigger (3), the other end is relative with the measuring junction of eddy current sensor (2), the signal wire of eddy current sensor (2) passes from handle (1) inside and is connected with control system.
2. eddy current Thicknesser probe as claimed in claim 1, it is characterized in that, described handle (1) be also provided with temperature sensor (6) and measure button (7), temperature sensor (6) passes with the signal wire measuring button (7) from handle (1) inside and is connected with control system.
3. eddy current Thicknesser probe as claimed in claim 1, it is characterized in that, described eddy current sensor (2) comprises magnetic core (21), drive coil (22), agate plate (23), metal-coating (24), drive coil (22) is arranged on magnetic core (21), metal-coating (24) is tubular, bottom is fixed on handle (1), it is inner that magnetic core (21) and drive coil (22) are arranged on metal-coating (24), the end winding support of magnetic core has agate plate (23), the openend of metal-coating (24) extends to agate plate (23) position.
4. eddy current Thicknesser probe as claimed in claim 3, it is characterized in that, described magnetic core (21) be also provided with measuring coil (26) and compensating coil (27) and lay respectively at drive coil (22) both sides, measuring coil (26) is positioned at agate plate (25) direction, described measuring coil (26) and compensating coil (27) are connected in series, the number of turn is identical, and rotation direction is contrary.
5. eddy current Thicknesser probe as claimed in claim 4, it is characterized in that, described drive coil (22), measuring coil (26) and compensating coil (27) outside are also provided with coil protect lining.
6. the eddy current Thicknesser probe as described in claim 3 or 4, is characterized in that, described magnetic core (21) is of a size of 2.5 × 2.5 × 20mm, and material is ferrite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510154641.7A CN104807393A (en) | 2015-04-02 | 2015-04-02 | Vortex thickness measuring probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510154641.7A CN104807393A (en) | 2015-04-02 | 2015-04-02 | Vortex thickness measuring probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104807393A true CN104807393A (en) | 2015-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510154641.7A Pending CN104807393A (en) | 2015-04-02 | 2015-04-02 | Vortex thickness measuring probe |
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| CN (1) | CN104807393A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08304008A (en) * | 1995-04-28 | 1996-11-22 | Mitsubishi Heavy Ind Ltd | Method and apparatus for measurement of solidification thickness of cast piece |
| CN101505075A (en) * | 2008-11-18 | 2009-08-12 | 无锡麦克络微电机有限公司 | Vibration preventing automobile instrument motor |
| JP2009186433A (en) * | 2008-02-08 | 2009-08-20 | Chiba Univ | Eddy-current type sample measuring method, eddy-current sensor and eddy-current type sample measurement system |
| CN101771239A (en) * | 2010-01-24 | 2010-07-07 | 中国电子科技集团公司第十三研究所 | Packaging and positioning device for planar array laser |
| CN102652933A (en) * | 2011-03-01 | 2012-09-05 | 中国电子科技集团公司第四十五研究所 | Wafer-fixing machine adhesive-dispensing device |
| CN204694202U (en) * | 2015-04-02 | 2015-10-07 | 哈尔滨东安发动机（集团）有限公司 | A kind of eddy current Thicknesser probe |
-
2015
- 2015-04-02 CN CN201510154641.7A patent/CN104807393A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08304008A (en) * | 1995-04-28 | 1996-11-22 | Mitsubishi Heavy Ind Ltd | Method and apparatus for measurement of solidification thickness of cast piece |
| JP2009186433A (en) * | 2008-02-08 | 2009-08-20 | Chiba Univ | Eddy-current type sample measuring method, eddy-current sensor and eddy-current type sample measurement system |
| CN101505075A (en) * | 2008-11-18 | 2009-08-12 | 无锡麦克络微电机有限公司 | Vibration preventing automobile instrument motor |
| CN101771239A (en) * | 2010-01-24 | 2010-07-07 | 中国电子科技集团公司第十三研究所 | Packaging and positioning device for planar array laser |
| CN102652933A (en) * | 2011-03-01 | 2012-09-05 | 中国电子科技集团公司第四十五研究所 | Wafer-fixing machine adhesive-dispensing device |
| CN204694202U (en) * | 2015-04-02 | 2015-10-07 | 哈尔滨东安发动机（集团）有限公司 | A kind of eddy current Thicknesser probe |
Non-Patent Citations (2)
| Title |
|---|
| 岳秀芳: "《曲面基体涡流测厚方法研究》", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
| 张朝晖: "《检测技术及应用》", 31 October 2005, 中国计量出版社 * |
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Application publication date: 20150729 |
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| WD01 | Invention patent application deemed withdrawn after publication |