CN110940255B - Measuring tool for blade profile analyzer - Google Patents
Measuring tool for blade profile analyzer Download PDFInfo
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- CN110940255B CN110940255B CN201911256537.3A CN201911256537A CN110940255B CN 110940255 B CN110940255 B CN 110940255B CN 201911256537 A CN201911256537 A CN 201911256537A CN 110940255 B CN110940255 B CN 110940255B
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- measuring tool
- contact
- support arm
- arm
- blade
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/20—Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures
- G01B5/205—Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures of turbine blades or propellers
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- 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
- G01B21/20—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 contours or curvatures, e.g. determining profile
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- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention provides a measuring tool of a blade profile analyzer, which comprises: a measuring tool base; the measuring tool stand column is fixedly arranged at the rear end of the top surface of the measuring tool base through a bolt, a measuring tool top arm parallel to the measuring tool base is arranged at the top of the measuring tool stand column, and a first pair of mark blocks are arranged on the front end surface of the measuring tool top arm; the measuring tool front column is fixedly arranged in front of the measuring tool upright column through a bolt, a second pair of mark blocks are arranged at the top of the front end surface of the measuring tool front column, and the second pair of mark blocks and the first pair of mark blocks are positioned on the same plane; the supporting and positioning structure comprises a first supporting arm and a second supporting arm, and the first supporting arm is fixedly arranged at the upper part of the measuring tool upright post through a bolt; the blade positioning device is simple in structure, convenient to operate, capable of quickly positioning and fixing the blades during detection, high in positioning accuracy, greatly shortened in detection time and provided with detection conditions for blade batch detection.
Description
Technical Field
The invention relates to the technical field of detection tools, in particular to a measuring tool of a blade profile analyzer.
Background
The turbine guider is an important part in an aircraft engine and has the function of changing the flow direction of gas to push blades to rotate. The turbine guider is in a severe working environment and is subjected to high thermal stress caused by high-temperature gas flow and uneven heating of various parts, aerodynamic force generated when gas passes through and vibration load caused by gas flow pulsation. The inner ring and the outer ring of the turbine guider are circumferentially and equidistantly distributed with guider blades, the guider blades are used for changing the flowing direction of gas, the quality of the guider blades is particularly important, one of the quality detection of the guider blades is the detection of the blade profile of the guider blades, the detection of the blade profile of the guider blades in the prior art usually adopts coordinate detection, the detection mode utilizes a blade profile analyzer to model the coordinates of the blades, then the detection model is compared with an ideal model, but the detection mode has no special measuring tool, so that the detection time consumption is long in the detection process, the blades cannot move at all during the detection, otherwise, the detection precision is influenced, and the detection condition cannot be provided for batch detection.
Disclosure of Invention
The invention provides a blade profile analyzer measuring tool, and aims to reduce blade profile detection time, improve blade profile detection precision and provide detection conditions for batch detection.
In order to achieve the above object, an embodiment of the present invention provides a blade profile analyzer measuring tool, including:
a measuring tool base;
the measuring tool stand column is fixedly arranged at the rear end of the top surface of the measuring tool base through a bolt, a measuring tool top arm parallel to the measuring tool base is arranged at the top of the measuring tool stand column, and a first pair of mark blocks are arranged on the front end surface of the measuring tool top arm;
the measuring tool front column is fixedly arranged in front of the measuring tool upright column through a bolt, a second pair of mark blocks are arranged at the top of the front end surface of the measuring tool front column, and the second pair of mark blocks and the first pair of mark blocks are positioned on the same plane;
the supporting and positioning structure comprises a first supporting arm and a second supporting arm, and the first supporting arm is fixedly arranged at the upper part of the measuring tool upright post through a bolt; the second supporting arm is fixedly arranged on the side surface of the middle part of the measuring tool upright post through a bolt;
and the pressing mechanism is arranged on the measuring tool stand column and has the same height as the second supporting arm.
The front end of the first support arm is C-shaped, a first contact is arranged on the side surface of a first edge of the front end of the first support arm, a second contact is arranged on the side surface of a second edge of the front end of the first support arm, a support plate is arranged at the bottom of an included angle between a third edge and the second edge of the front end of the first support arm, and an upward contact is arranged on the support plate; the front end of the second support arm is L-shaped, a third contact and a fourth contact are arranged on the side surface of the first edge of the front end of the second support arm, and a fifth contact is arranged on the side surface of the second edge of the front end of the second support arm.
The contact in contact with the cambered surface of the blade in the first contact, the second contact, the third contact, the fourth contact, the fifth contact and the upward contact is a spherical top, and the contact in contact with the plane of the blade is a flat top.
The pressing mechanism comprises a pressing support arm, the pressing support arm is fixedly mounted on the other side face of the measuring tool stand column through a bolt, and the pressing support arm and the second support arm are arranged oppositely.
The pressing support arm is provided with a pressing block, the pressing block is provided with two long through holes, the pressing block is installed on the pressing support arm in a sliding mode through the matching of a bolt and the long through holes, and a clamping groove is formed in the bottom of one end of the pressing block.
The side surface of the pressing support arm is provided with a screw hole, a pressing bolt penetrates through the screw hole, a circle of boss is arranged on a screw rod of the pressing bolt, and the boss is clamped in the clamping groove.
Wherein, a quick clamp is fixedly arranged on the end head of the first supporting arm.
Wherein, the measuring tool base is provided with a reference pin in front of the measuring tool upright post.
The scheme of the invention has the following beneficial effects:
according to the blade profile analyzer measuring tool provided by the embodiment of the invention, the blade is positioned through the six contacts on the first supporting arm and the second supporting arm and the degree of freedom of the blade is limited, the rapid clamp is arranged to rapidly mount the blade on the measuring tool, the pressing block can be pushed forward to be pushed onto the clamped blade to further position and limit the movement of the blade by rotating the pressing bolt, and the six contacts can be helped to provide a detection reference through the reference pin; the blade positioning device is simple in structure, convenient to operate, capable of quickly positioning and fixing the blades during detection, high in positioning accuracy, greatly shortened in detection time and provided with detection conditions for blade batch detection.
Drawings
FIG. 1 is a first schematic view of a clamping blade structure of a blade profile analyzer measuring tool of the present invention;
FIG. 2 is a second schematic view of a blade clamping structure of the measuring tool of the blade profile analyzer of the present invention;
FIG. 3 is a first schematic structural diagram of a blade profile analyzer measuring tool of the present invention;
FIG. 4 is a front view of a blade profile analyzer tool of the present invention;
FIG. 5 is a sectional view of the blade profile and the blade structure of the blade profile analyzer measuring tool of the present invention.
[ description of reference ]
1-measuring tool base; 2-measuring tool upright post; 3-a first pair of patch blocks; 4-a second benchmarking block; 5-a first support arm; 6-a second support arm; 7-a blade; 8-a probe; 9-a first contact; 10-a second contact; 11-up contact; 12-a third contact; 13-a fourth contact; 14-a fifth contact; 15-pressing the supporting arm; 16-a compression block; 17-a hold-down bolt; 18-quick clamp; reference pin 19.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The invention provides a blade profile analyzer measuring tool, aiming at the problems that the existing detection consumes long time, has unstable detection precision and can not provide detection conditions for batch detection.
As shown in fig. 1 to 3, an embodiment of the present invention provides a blade profile analyzer measuring tool, including: a measuring tool base 1; the measuring tool comprises a measuring tool upright post 2, wherein the measuring tool upright post 2 is fixedly arranged at the rear end of the top surface of the measuring tool base 1 through bolts, a measuring tool top arm parallel to the measuring tool base is arranged at the top of the measuring tool upright post 2, and a first calibration block 3 is arranged on the front end surface of the measuring tool top arm; the measuring tool front column is fixedly installed in front of the measuring tool upright column through a bolt, a second pair of mark blocks 4 are arranged at the top of the front end face of the measuring tool front column, and the second pair of mark blocks 4 and the first pair of mark blocks 3 are located on the same plane; the supporting and positioning structure comprises a first supporting arm 5 and a second supporting arm 6, and the first supporting arm 5 is fixedly arranged at the upper part of the measuring tool upright post 2 through a bolt; the second supporting arm 6 is fixedly arranged on the side surface of the middle part of the measuring tool upright post 2 through a bolt; and the pressing mechanism is arranged on the measuring tool stand column, and the pressing mechanism and the second supporting arm 6 are at the same height.
According to the blade profile analyzer measuring tool provided by the embodiment of the invention, the measuring tool base 1 is provided with a pair of upright positioning pins and a pair of front column positioning pins, and the measuring tool upright 2 and the measuring tool front column are respectively positioned and installed on the measuring tool base 1 through the upright positioning pins and the front column positioning pins; the measuring tool upright post 2 is provided with a pair of first supporting positioning pins and a pair of second supporting positioning pins, and the first supporting arm 5 and the second supporting arm 6 are respectively positioned and installed on the measuring tool upright post 2 through the first supporting positioning pins and the second supporting positioning pins; the top of the measuring tool upright post 2 is provided with a pair of top arm positioning pins, and the measuring tool top arm is positioned and installed on the measuring tool upright post 2 through the top arm positioning pins; the front end face of the measuring tool top arm is provided with a pair of first pair of calibration pins, and the first pair of calibration blocks 3 are installed on the measuring tool top arm through the first pair of calibration pins; a pair of second alignment pins is arranged at the top of the front end surface of the measuring tool front column, and the second alignment block 4 is positioned and installed on the measuring tool front column through the second alignment pins; all the positioning pins can help to position and install each part, so that the overall precision of the measuring tool is effectively guaranteed; during detection, a blade 7 needs to be positioned and placed between the first supporting arm 5 and the second supporting arm 6, and after the blade 7 is positioned, the blade 7 is fixed through the pressing mechanism arranged on the measuring tool upright post 2; inputting relevant parameters of a blade profile analyzer measuring tool into a blade profile analyzer in advance, then placing the whole blade profile analyzer measuring tool and the blade 7 at a preset position of a detection platform of the blade profile analyzer, feeding a probe 8 of the blade profile analyzer back to the blade profile analyzer by contacting X, Y and Z planes of the first pair of calibration blocks 3 and the second pair of calibration blocks 4, automatically finding a spatial position of the blade 7 by a system through preset parameters, operating the probe 8 of the blade profile analyzer to contact the specified position of the blade 7 for a circle by lightly stroking, and generating a motion track of the probe by the system, the motion track is the profile line of the blade at the designated position of the blade 7, and the generated profile line is compared with the theoretical profile line of the blade and the upper and lower difference profile lines to know whether the motion track is in a tolerance range or not so as to finish the detection process;
as shown in fig. 4, the front end of the first support arm 5 is C-shaped, a first contact 9 is disposed on a side surface of a first edge of the front end of the first support arm 5, a second contact 10 is disposed on a side surface of a second edge of the front end of the first support arm 5, a support plate is disposed at a bottom of an included angle between a third edge and the second edge of the front end of the first support arm 5, and an upward contact 11 is disposed on the support plate; the front end of the second support arm 6 is L-shaped, a third contact 12 and a fourth contact 13 are arranged on the side surface of the first edge of the front end of the second support arm 6, and a fifth contact 14 is arranged on the side surface of the second edge of the front end of the second support arm 6.
As shown in fig. 1 to 5, the contact in contact with the cambered surface of the blade among the first contact 9, the second contact 10, the third contact 12, the fourth contact 13, the fifth contact 14 and the upward contact 11 is a spherical top, and the contact in contact with the plane of the blade is a flat top.
In the blade profile analyzer measuring tool according to the above embodiment of the present invention, the first contact 9 and the second contact 10 are disposed on the first support arm 5, and the two contacts are tightly attached to the upper blade edge sidewall of the blade 7 through a flat-top structure; the upward contact 11 is arranged on the support plate, and because the upward contact 11 is in contact with the bottom of the upper blade edge of the blade 7 and the bottom of the upper blade edge of the blade 7 is an arc surface, in order to ensure the positioning accuracy, the upward contact is a spherical top and is only in point contact with the blade 7; the third contact 12, the fourth contact 13 and the fifth contact 14 are arranged on the second supporting arm 6, and the third contact 12, the fourth contact 13 and the fifth contact 14 are tightly attached to the side wall of the lower blade edge of the blade 7 through a flat-topped structure; six contacts adopt a six-point positioning method, the blade 7 is positioned from six different angles, six-direction freedom degrees of the blade 7 are eliminated, and accurate positioning is realized.
As shown in fig. 2, the pressing mechanism includes a pressing arm 15, the pressing arm 15 is fixedly mounted on the other side surface of the measuring tool upright 2 through a bolt, and the pressing arm 15 is arranged opposite to the second support arm 6.
The pressing support arm 15 is provided with a pressing block 16, the pressing block is provided with two long through holes, the pressing block 16 is slidably mounted on the pressing support arm 15 through the matching of a bolt and the long through holes, and the bottom of one end of the pressing block 16 is provided with a clamping groove.
A screw hole is formed in the side face of the pressing support arm 15, a pressing bolt 17 penetrates through the screw hole, a circle of boss is arranged on a screw rod of the pressing bolt 17, and the boss is clamped in the clamping groove.
In the blade profile analyzer measuring tool according to the above embodiment of the present invention, the height of the pressing support arm 15 is close to the height of the second support arm 6, the measuring tool upright 2 is provided with a pair of pressing positioning pins, and the pressing support arm 15 is positioned and installed on the measuring tool upright 2 through the pressing positioning pins, so that the pressing support arm 15 can be accurately installed on the measuring tool upright 2, and the measuring tool precision is ensured; when the blade 7 is positioned between the first support arm 5 and the second support arm 6, the screw of the compression bolt 17 advances into the screw hole by screwing in the compression bolt 17, and the compression block 16 advances along with the compression bolt 17 because the compression block 16 is provided with the clamping groove and the clamping groove is clamped on the boss of the compression bolt 17; the front end of the pressing block 16 is longer than the protruding end of the pressing bolt 17 penetrating through the screw hole, so that only the pressing block 16 can be in contact with the positioned blade 7, the rotating force generated by rotating the pressing bolt 17 is not applied to the blade 7, the blade 7 is not subjected to rotating displacement, and the detection precision of the blade 7 in detection is ensured.
As shown in fig. 2, a quick clamp 18 is fixedly arranged on the end of the first supporting arm.
According to the blade profile analyzer measuring tool provided by the embodiment of the invention, the quick clamp 18 can help an operator to quickly position and clamp when the blade 7 is placed.
Wherein, the measuring tool base is provided with a reference pin 19 in front of the measuring tool upright post 2.
In the blade profile analyzer measuring tool according to the above embodiment of the present invention, the reference pin 19 is a reference of the measuring tool, and the dimensional accuracy of the contact is detected based on the reference pin 19.
The blade profile analyzer measuring tool according to the above-mentioned embodiment of the present invention positions the blade 7 and limits the six-directional freedom of the blade 7 by the first contact 9, the second contact 10, the third contact 12, the fourth contact 13, the fifth contact 14 and the upward contact 11 on the first support arm 5 and the second support arm 6, and the quick clamp 18 is provided to quickly fix the blade 7 to the measuring tool, the pressing block 16 can be pushed forward to be pushed and extruded to the clamped blade 7 by rotating the pressing bolt 17 to further position and limit the movement of the blade 7, the positioning pins are arranged to help each structure to be positioned and installed accurately, the reference pin 19 can help the six contacts provide detection reference, and the first calibration block 3 and the second calibration block 4 can help the probe 8 of the leaf profile analyzer to accurately position the position of the whole measuring tool, so that the outline of the blade 7 is accurately traced; the blade positioning device is simple in structure, convenient to operate, capable of quickly positioning and fixing the blade to be detected during detection, high in positioning accuracy, greatly shortened in detection time and provided with detection conditions for blade batch detection.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (6)
1. A blade profile analyzer measuring tool, comprising:
a measuring tool base;
the measuring tool comprises a measuring tool upright post, a measuring tool base and a measuring tool supporting arm, wherein the measuring tool upright post is fixedly arranged at the rear end of the top surface of the measuring tool base through a bolt;
the measuring tool front column is fixedly arranged in front of the measuring tool upright column through a bolt, a second pair of mark blocks are arranged at the top of the front end surface of the measuring tool front column, and the second pair of mark blocks and the first pair of mark blocks are positioned on the same plane;
the supporting and positioning structure comprises a first supporting arm and a second supporting arm, and the first supporting arm is fixedly arranged at the upper part of the measuring tool upright post through a bolt; the second supporting arm is fixedly arranged on the side surface of the middle part of the measuring tool upright post through a bolt;
the pressing mechanism is arranged on the measuring tool stand column and is as high as the second supporting arm;
the front end of the first support arm is C-shaped, a first contact is arranged on the side surface of a first edge of the front end of the first support arm, a second contact is arranged on the side surface of a second edge of the front end of the first support arm, a support plate is arranged at the bottom of an included angle between a third edge and the second edge of the front end of the first support arm, and an upward contact is arranged on the support plate; the front end of the second support arm is L-shaped, a third contact and a fourth contact are arranged on the side surface of the first edge of the front end of the second support arm, and a fifth contact is arranged on the side surface of the second edge of the front end of the second support arm; the first contact, the second contact, the third contact, the fourth contact and the fifth contact are of flat top structures, and the upward contact is of a dome structure.
2. The blade profile analyzer gauge of claim 1, wherein the hold-down mechanism comprises a hold-down arm fixedly mounted to the other side of the gauge post by a bolt, the hold-down arm being opposite the second support arm.
3. The blade profile analyzer measuring tool according to claim 2, wherein a pressing block is mounted on the pressing support arm, two long through holes are formed in the pressing block, the pressing block is slidably mounted on the pressing support arm in a fit manner with the long through holes through bolts, and a clamping groove is formed in the bottom of one end of the pressing block.
4. The blade profile analyzer measuring tool of claim 3, wherein a screw hole is formed in a side surface of the pressing support arm, a pressing bolt penetrates through the screw hole, a circle of boss is arranged on a screw rod of the pressing bolt, and the boss is clamped in the clamping groove.
5. The blade profile analyzer gauge of claim 1, wherein a quick clamp is fixedly disposed on the tip of the first support arm.
6. The blade profile analyzer tool of claim 1, wherein the tool base is provided with a reference pin in front of the tool post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911256537.3A CN110940255B (en) | 2019-12-10 | 2019-12-10 | Measuring tool for blade profile analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911256537.3A CN110940255B (en) | 2019-12-10 | 2019-12-10 | Measuring tool for blade profile analyzer |
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| Publication Number | Publication Date |
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| CN110940255A CN110940255A (en) | 2020-03-31 |
| CN110940255B true CN110940255B (en) | 2021-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911256537.3A Active CN110940255B (en) | 2019-12-10 | 2019-12-10 | Measuring tool for blade profile analyzer |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4146967A (en) * | 1977-08-15 | 1979-04-03 | The Boeing Company | Rotor blade inspection fixture |
| CN201909598U (en) * | 2010-12-20 | 2011-07-27 | 沈阳黎明航空发动机(集团)有限责任公司 | Comprehensive measuring device for shaped surface of allowance-free blade |
| CN202938801U (en) * | 2012-12-01 | 2013-05-15 | 无锡透平叶片有限公司 | Positioning and clamping device for vertical three-coordinate detection of blade forging |
| CN109489580A (en) * | 2018-12-10 | 2019-03-19 | 华东理工大学 | A kind of processing of complex surface in machine point cloud detection and compensation method |
| CN110500931A (en) * | 2019-08-12 | 2019-11-26 | 无锡航亚科技股份有限公司 | A kind of the measurement fixture and measurement method of vane foil size and blade tip size |
-
2019
- 2019-12-10 CN CN201911256537.3A patent/CN110940255B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4146967A (en) * | 1977-08-15 | 1979-04-03 | The Boeing Company | Rotor blade inspection fixture |
| CN201909598U (en) * | 2010-12-20 | 2011-07-27 | 沈阳黎明航空发动机(集团)有限责任公司 | Comprehensive measuring device for shaped surface of allowance-free blade |
| CN202938801U (en) * | 2012-12-01 | 2013-05-15 | 无锡透平叶片有限公司 | Positioning and clamping device for vertical three-coordinate detection of blade forging |
| CN109489580A (en) * | 2018-12-10 | 2019-03-19 | 华东理工大学 | A kind of processing of complex surface in machine point cloud detection and compensation method |
| CN110500931A (en) * | 2019-08-12 | 2019-11-26 | 无锡航亚科技股份有限公司 | A kind of the measurement fixture and measurement method of vane foil size and blade tip size |
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| CN110940255A (en) | 2020-03-31 |
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Denomination of invention: Blade profile analyzer measuring tool Effective date of registration: 20230714 Granted publication date: 20210706 Pledgee: Power Valley sub branch of Zhuzhou Rural Commercial Bank Co.,Ltd. Pledgor: Zhuzhou Kaifeng Industrial Co.,Ltd. Registration number: Y2023980048422 |