CN112683197A - High-precision complex blade rapid measuring instrument device - Google Patents
High-precision complex blade rapid measuring instrument device Download PDFInfo
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- CN112683197A CN112683197A CN202110018015.0A CN202110018015A CN112683197A CN 112683197 A CN112683197 A CN 112683197A CN 202110018015 A CN202110018015 A CN 202110018015A CN 112683197 A CN112683197 A CN 112683197A
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Abstract
The invention belongs to the technical field of measurement, and particularly relates to a high-precision complex blade rapid measuring instrument device. The device comprises a pneumatic shockproof device, a blade slewing mechanism, a laser sensor, an X-axis forward and backward moving mechanism, a Z-axis vertical moving mechanism and a Y-axis leftward and rightward moving mechanism; the X-axis front-back moving mechanism, the Z-axis vertical moving mechanism and the Y-axis left-right moving mechanism form an XYZ three-coordinate moving platform; the blade rotating mechanism is arranged on one side of the top surface of the pneumatic anti-vibration device, and the X-axis forward-backward moving mechanism is arranged on the other side of the top surface of the pneumatic anti-vibration device; the blade slewing mechanism is provided with a blade to be detected, the laser sensor is used for detecting the blade to be detected, and the laser sensor is arranged on the Y-axis left-right moving mechanism. The blade is divided into six equal parts according to the height, and each equal part is measured by a laser sensor, so that the data of the curved surface structure can be measured more accurately.
Description
Technical Field
The invention belongs to the technical field of measurement, and particularly relates to a high-precision complex blade rapid measuring instrument device.
Background
The blades with complex geometric shapes are three-dimensional curved surface figures. The length of the material ranges from 15mm to 850mm, and the size span is large. The blade is influenced by various factors, the manufacturing conditions are different, the manufacturing process and the precision level of the blade profile directly influence various working qualities of an engine and the use efficiency of the blade, and errors of the blade greatly influence secondary flow loss. Therefore, the measurement of the profile of the blade has been a difficult problem and has received a lot of attention. The shape of the blade is a three-dimensional curved surface figure, and the description parameters are numerous, so that the molded lines in all the cross sections from the blade root to the blade shroud are different, and the detection of the molded lines of the blade is difficult. In each stage of blade production, all dimensions of the blank are inspected from the blank to the blade assembly.
The laser measuring device and system for the adjustable paddle blade disclosed in patent No. CN103307984B can measure the blade data information fully automatically, but the measuring head can only move in the front-back and up-down directions, the moving dimension is limited, and the measuring head cannot measure at the best blade measuring angle.
The laser scanning device for the front and rear edge cross lines of the aviation blade, with the patent number of CN207936929U, only measures the aviation blade, has a single measuring object, and is not suitable for rapid measurement of complex blades.
Disclosure of Invention
The invention aims at the defects in the prior art and provides a high-precision complex blade rapid measuring instrument device which can rapidly and accurately measure the molded line of a blade to be measured.
In order to achieve the purpose, the invention adopts the following technical scheme that the device comprises a pneumatic shockproof device (a pneumatic shockproof platform), a blade slewing mechanism, a laser sensor, an X-axis forward and backward moving mechanism, a Z-axis vertical moving mechanism and a Y-axis left and right moving mechanism; the X-axis vertical moving mechanism, the Z-axis vertical moving mechanism and the Y-axis left-right moving mechanism are arranged on the X-axis front-back moving mechanism, and the X-axis front-back moving mechanism, the Z-axis vertical moving mechanism and the Y-axis left-right moving mechanism form an XYZ three-coordinate moving platform.
The blade rotating mechanism is arranged on one side of the top surface of the pneumatic anti-vibration device, and the X-axis forward-backward moving mechanism is arranged on the other side of the top surface of the pneumatic anti-vibration device.
The blade rotation mechanism is provided with a blade to be detected, the laser sensor is used for detecting the blade to be detected, and the laser sensor is arranged on the Y-axis left-right moving mechanism.
Further, when the device works, the blade to be measured is fixed on a fixed table of the blade rotating mechanism, the laser sensor is moved to measure through the X-axis forward and backward moving mechanism, the Z-axis vertical moving mechanism and the Y-axis left and right moving mechanism, so that measurement data are obtained, the obtained data are fitted according to a Bezier spline curve, and the fitted curve is the actual profile graph of the blade to be measured.
During measurement, the blade rotating mechanism is matched with the X-axis forward and backward moving mechanism, the Z-axis vertical moving mechanism and the Y-axis left and right moving mechanism, and when the blade rotating mechanism drives the blades to rotate, the moving mechanism can drive the laser sensor to move, so that the laser sensor keeps a certain measuring distance range and angle with the blade plane, and the measuring speed and precision are accelerated.
Furthermore, a certain measuring distance range is 17.4mm-22.6mm, and the normal direction of the measured point of the blade is ensured to be aligned by the laser measuring instrument through the rotating angle.
Furthermore, a marble bottom plate is attached to the upper surface of the pneumatic shock-proof device (air-floating shock-absorbing platform).
Furthermore, the X-axis forward and backward movement mechanism comprises a mechanism seat arranged on the pneumatic shockproof device (damping platform), two linear guide rails arranged on the mechanism seat, a ball screw transmission mechanism, a grating ruler and a moving platform; the moving platform is arranged on the two linear guide rails and is connected with the linear guide rails in a sliding manner through the sliding blocks; a ball screw is arranged on the mechanism seat and between the two linear guide rails, and the two linear guide rails are parallel to the screw; the ball screw transmission mechanism drives the moving platform to reciprocate along the linear guide rail.
Further, the blade slewing mechanism comprises a supporting seat, a servo motor and a fixed table, wherein the supporting seat is installed on a pneumatic shock-proof device (an air-flotation shock-absorbing platform), the servo motor is installed in the supporting seat, the motor shaft direction of the servo motor is upward and extends out of the supporting seat, and the fixed table is arranged at the upper end of the motor shaft of the servo motor and is fixedly connected with the motor shaft; the upper surface of the fixed table is fixedly connected with an elbow clamp of the clamp, and the elbow clamp is used for fixing the blade to be measured.
Further, the elbow clamp is Jiagang CH-20235 type elbow clamp.
Furthermore, the laser sensor is fixed on the Y-axis left-right moving platform through a sensor support.
Compared with the prior art, the invention has the beneficial effects.
According to the invention, the blade is divided into six equal parts according to the height, and each equal part is measured by using the laser sensor, so that the data of the curved surface structure can be measured more accurately. Meanwhile, the precision of each motion axis is 0.01mm, and the precision of 0.001um is used as a grating ruler, so that the motion and measurement precision can be ensured.
Drawings
The invention is further described with reference to the following figures and detailed description. The scope of the invention is not limited to the following expressions.
Fig. 1 is a three-dimensional schematic diagram of a high-precision blade rapid measuring instrument device.
Fig. 2 is a front view of a high precision blade rapid gauge apparatus.
Fig. 3 is a top view of a high precision blade rapid gauge apparatus.
Fig. 4 is a schematic view of the measurement principle of a high-precision blade rapid measuring instrument device.
FIG. 5 is a view showing a structure of a blade turning mechanism.
In the figure, 1 an air-floatation damping platform, 2 a marble bottom plate, a 3X-axis forward and backward moving mechanism, a linear rolling guide rail device of a 4X-axis forward and backward moving mechanism, a mechanism seat of a 5Z-axis vertical moving mechanism, a servo motor of a 6Y-axis left and right moving mechanism, a moving platform of a 7Y-axis left and right moving mechanism, a moving platform of an 8Z-axis vertical moving mechanism, a servo motor of a 9Z-axis vertical moving mechanism, a blade to be tested 10, a fixed platform of an 11-blade rotating mechanism, a 12-blade rotating mechanism supporting seat, a 13 elbow clamp, a moving platform of a 14X-axis forward and backward moving mechanism, a 15 laser sensor supporting seat, a 16 laser triangulation method measuring head, a guide rail of a 17Z-axis vertical moving mechanism, a support of an 18Z-axis vertical moving mechanism, a 19Z-axis grating scale, a 20X-axis alternating, The device comprises a 23X-axis grating ruler, a 31-blade rotary servo motor, a 32 bearing, a 33 sleeve, a 34 bearing cover, a 35-axis elastic retainer ring, a 37 hexagonal socket head screw, a 38 hexagonal socket head bolt, a 39 coupling and a 40 nut.
Detailed Description
As shown in fig. 1-5, a specific embodiment of the present invention; the device comprises a pneumatic shock-proof device (an air-flotation shock-absorption platform 1), a blade swing mechanism, a laser sensor, an X-axis forward and backward moving mechanism 3, a Z-axis vertical moving mechanism and a Y-axis left and right moving mechanism. The blade slewing mechanism is arranged on the left side of a marble bottom plate 2 of the pneumatic shockproof device, the laser sensor device is abutted against a left bottom angle of a moving platform 7 of the Y-axis left-right moving mechanism, the X-axis front-back moving mechanism 3 is arranged on the right side of the bottom plate, and the Z-axis vertical moving mechanism is arranged on a moving platform 14 of the X-axis front-back moving mechanism 3. The Y-axis left-right moving mechanism is arranged on a moving platform 8 of the Z-axis vertical moving mechanism.
The specific embodiment is as follows: during operation, the blade is fixed on a fixed table 11 of the blade rotating mechanism, the laser sensor is moved to measure through the X-axis forward and backward moving mechanism 3, the Z-axis vertical moving mechanism and the Y-axis left and right moving mechanism, so that measured data are obtained, the obtained data are fitted according to a Bezier spline curve, the fitted curve is an actual profile line graph of the blade to be measured, and the precision of the curve can reach 1um precision. Meanwhile, during measurement, the blade rotating mechanism is matched with the X-axis forward and backward moving mechanism 3, the Z-axis vertical moving mechanism and the Y-axis left and right moving mechanism, and when the blade rotating mechanism drives the blades to rotate, the moving mechanism drives the laser sensor to move, so that the laser sensor keeps the optimal measurement distance range (17.4 mm-22.6 mm) and angle with the blade surface, and the measurement speed and precision are accelerated.
The X-axis forward-backward moving mechanism 3 comprises a mechanism seat, a linear rolling guide rail device 4 of the X-axis forward-backward moving mechanism, an X-axis alternating current servo motor 20, a ball screw, a grating ruler and a moving platform. The mechanism seat is fixed on the right side of the bottom plate, the linear rolling guide rail devices are installed on two sides of the uppermost portion of the mechanism seat, the alternating current servo motor is installed in the center of the front portion of the mechanism seat, the ball screw is connected with the servo motor through the intermediate mechanism, the grating ruler is installed in the middle of the right side of the supporting seat, the moving platform is connected with the ball screw and located above the ball screw, and the moving speed of the moving platform can reach 10000 mm/min. And the precision of each motion axis is 0.01mm, and the precision of the grating ruler is 0.001 um.
Another specific embodiment: the Y-axis left-right moving mechanism and the X-axis front-back moving mechanism 3 have the same structure, but a mechanism seat 22 of the Y-axis left-right moving mechanism is fixed on a platform of the Z-axis vertical moving mechanism to be transversely arranged; the structure of the Z-axis vertical movement mechanism is the same as that of the X-axis forward-backward movement mechanism 3 except for the bracket 18 of the Z-axis vertical movement mechanism. And will not be described in detail herein. The bottom of a support 18 of the Z-axis vertical moving mechanism is fixed at the rear part of the X-axis moving platform, the bottom of a mechanism seat 5 of the Z-axis vertical moving mechanism is fixed with the vertical part of the support, and the Z-axis mechanism seat is arranged in the vertical direction.
The blade rotating mechanism comprises a blade rotating mechanism supporting seat 12, a blade rotating servo motor and a fixed table, wherein the blade rotating mechanism supporting seat 12 is arranged in the left front of the bottom plate, the servo motor is arranged in the center of the blade rotating mechanism supporting seat 12, and the fixed table is arranged on the uppermost part of a shaft connected with the servo motor.
The laser sensor device comprises a laser sensor support 15 and a laser triangulation measuring head 16, the laser triangulation measuring head 16 can be used for shooting 64000 times per second, the repeated precision of the laser triangulation measuring head can reach 2.5um on the X axis inside the measuring head, and the Z axis inside the measuring head can reach 0.2um, so that accurate size measurement and appearance detection are realized, and the support is fixedly arranged at the left platform bottom angle of the left-right moving mechanism on the Y axis.
The pneumatic shock-proof device can effectively reduce the influence of vibration on the measurement accuracy, and meanwhile, the bottom plate is the marble bottom plate 2, so that the measurement accuracy is not easy to deform and is more stable.
During measurement, the blade 10 to be measured is fixed on a fixed table 11 of a blade rotating mechanism, and then is clamped by an elbow clamp 13 to ensure accuracy. Then inputting X-axis, Y-axis and Z-axis moving units into a computer, driving the X-axis moving platform to move in the front-back direction by the servo motor of the X-axis front-back moving mechanism 3, driving the moving platform 8 of the Z-axis vertical moving mechanism to move in the vertical direction by the servo motor of the Z-axis vertical moving mechanism 9, and driving the Y-axis moving platform to move in the left-right direction by the servo motor 6 of the Y-axis left-right moving mechanism. Meanwhile, the moving precision of each axis is ensured by the X-axis grating ruler 23, the Y-axis grating ruler and the Z-axis grating ruler 19 respectively. Then the rotating speed of the blade slewing mechanism is input, and the laser sensor is simultaneously adjusted to a proper position through a relevant algorithm. After the fixed platform of the blade slewing mechanism drives the blade to start to rotate, the laser sensor can obtain data of a series of blades, then the information is fitted according to a Bezier spline curve, and the fitted curve is an actual profile graph of the blade to be measured.
And the blade slewing mechanism moves as follows during measurement: the servo motor of the blade rotating mechanism is connected with the fixed platform 11 of the blade rotating mechanism through a coupler to drive the fixed platform to rotate, and the supporting seat supports the fixed platform 11 of the blade rotating mechanism, the servo motor of the blade rotating mechanism and other parts to ensure the completion of the rotation.
As shown in fig. 5, the blade turning mechanism support base 12 is fixed to the left front portion of the marble bottom 2 plate, and the motor shaft of the blade turning servo motor 31 is connected to the shaft of the fixing table through a coupling 39, at which time the blade turning servo motor 31 is fixed inside the blade turning mechanism support base 12. Meanwhile, the bearing 32 is sleeved outside the motor shaft of the blade rotation servo motor 31 and connected with the sleeve 33, the sleeve 33 is connected with one bearing 32 up and down, the upper bearing is fixed by the elastic retainer ring 35 for the shaft, then the bearing cover 34 is covered on the elastic retainer ring 35 for the shaft and connected by the hexagon socket head cap screw 37, and meanwhile, the upper half part and the lower half part of the blade rotation mechanism supporting seat 12 are fixed by the hexagon socket head cap screw 38 and the nut 40.
It should be understood that the detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can be modified or substituted equally to achieve the same technical effects; as long as the use requirements are met, the method is within the protection scope of the invention.
Claims (7)
1. A high-precision complex blade rapid measuring instrument device is characterized by comprising a pneumatic shockproof device, a blade slewing mechanism, a laser sensor, an X-axis forward and backward moving mechanism, a Z-axis vertical moving mechanism and a Y-axis left and right moving mechanism; the X-axis front-back moving mechanism, the Z-axis vertical moving mechanism and the Y-axis left-right moving mechanism form an XYZ three-coordinate moving platform;
the blade slewing mechanism is arranged on one side of the top surface of the pneumatic anti-vibration device, and the X-axis forward-backward moving mechanism is arranged on the other side of the top surface of the pneumatic anti-vibration device;
the blade slewing mechanism is provided with a blade to be detected, the laser sensor is used for detecting the blade to be detected, and the laser sensor is arranged on the Y-axis left-right moving mechanism;
during working, a blade to be measured is fixed on a blade rotating mechanism fixing table, a laser sensor is moved through an X-axis forward-backward moving mechanism, a Z-axis vertical moving mechanism and a Y-axis left-right moving mechanism for measurement, so that measurement data are obtained, the obtained data are fitted according to a Bezier spline curve, and the fitted curve is an actual profile graph of the blade to be measured;
during measurement, the blade rotating mechanism is matched with the X-axis forward and backward moving mechanism, the Z-axis vertical moving mechanism and the Y-axis left and right moving mechanism, and when the blade rotating mechanism drives the blades to rotate, the moving mechanism can drive the laser sensor to move, so that the laser sensor keeps a certain measuring distance range and angle with the blade plane, and the measuring speed and precision are accelerated.
2. A high precision complex blade rapid measuring instrument device according to claim 1, characterized in that: the range of a certain measuring distance is 17.4mm-22.6mm, and meanwhile, the normal direction of the measured point of the blade, which is just opposite to the laser measuring instrument, is ensured through the rotating angle.
3. A high precision complex blade rapid measuring instrument device according to claim 1, characterized in that: the upper surface of the pneumatic shock-proof device is pasted with a marble bottom plate.
4. A high precision complex blade rapid measuring instrument device according to claim 1, characterized in that: the X-axis forward and backward moving mechanism comprises a mechanism seat arranged on the damping platform, two linear guide rails arranged on the mechanism seat, a ball screw transmission mechanism, a grating ruler and a moving platform; the moving platform is arranged on the two linear guide rails and is connected with the linear guide rails in a sliding manner through the sliding blocks; a ball screw is arranged on the mechanism seat and between the two linear guide rails, and the two linear guide rails are parallel to the screw; the ball screw transmission mechanism drives the moving platform to reciprocate along the linear guide rail.
5. A high precision complex blade rapid measuring instrument device according to claim 1, characterized in that: the blade slewing mechanism comprises a supporting seat, a servo motor and a fixed table, wherein the supporting seat is arranged on the pneumatic anti-vibration device, the servo motor is arranged in the supporting seat, the motor shaft direction of the servo motor is upward and extends out of the supporting seat, and the fixed table is arranged at the upper end of the motor shaft of the servo motor and is fixedly connected with the motor shaft; the upper surface of the fixed table is fixedly connected with an elbow clamp of the clamp, and the elbow clamp is used for fixing the blade to be measured.
6. A high accuracy complex blade rapid measuring instrument device according to claim 5, characterized in that: the elbow clip is Jiagang CH-20235 elbow clip.
7. A high precision complex blade rapid measuring instrument device according to claim 1, characterized in that: and the laser sensor is fixed on the Y-axis left-right moving platform through a sensor support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110018015.0A CN112683197A (en) | 2021-01-07 | 2021-01-07 | High-precision complex blade rapid measuring instrument device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110018015.0A CN112683197A (en) | 2021-01-07 | 2021-01-07 | High-precision complex blade rapid measuring instrument device |
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| CN112683197A true CN112683197A (en) | 2021-04-20 |
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| CN202110018015.0A Pending CN112683197A (en) | 2021-01-07 | 2021-01-07 | High-precision complex blade rapid measuring instrument device |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307984A (en) * | 2013-05-20 | 2013-09-18 | 华中科技大学 | Laser measuring device, laser measuring system and laser measuring method for adjustable paddle blade |
| CN104864811A (en) * | 2015-06-15 | 2015-08-26 | 吉林大学 | In-situ measurement method for complex curved surface of blade |
| JP2016061631A (en) * | 2014-09-17 | 2016-04-25 | Dmg森精機株式会社 | Screw groove shape measurement device and tool machine using the same |
| CN108562243A (en) * | 2018-04-23 | 2018-09-21 | 西安工业大学 | A kind of four axis Blade measuring system and methods |
| CN207936929U (en) * | 2018-03-19 | 2018-10-02 | 华中科技大学 | A kind of aerial blade front and rear edge cross hairs laser scanning device |
| CN207963791U (en) * | 2017-10-25 | 2018-10-12 | 无锡市计量测试院 | A kind of four-axle linked blade laser measuring machine |
| CN208795162U (en) * | 2018-08-31 | 2019-04-26 | 河海大学常州校区 | A kind of five-axle linked blade Spectral Confocal measuring device |
-
2021
- 2021-01-07 CN CN202110018015.0A patent/CN112683197A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307984A (en) * | 2013-05-20 | 2013-09-18 | 华中科技大学 | Laser measuring device, laser measuring system and laser measuring method for adjustable paddle blade |
| JP2016061631A (en) * | 2014-09-17 | 2016-04-25 | Dmg森精機株式会社 | Screw groove shape measurement device and tool machine using the same |
| CN104864811A (en) * | 2015-06-15 | 2015-08-26 | 吉林大学 | In-situ measurement method for complex curved surface of blade |
| CN207963791U (en) * | 2017-10-25 | 2018-10-12 | 无锡市计量测试院 | A kind of four-axle linked blade laser measuring machine |
| CN207936929U (en) * | 2018-03-19 | 2018-10-02 | 华中科技大学 | A kind of aerial blade front and rear edge cross hairs laser scanning device |
| CN108562243A (en) * | 2018-04-23 | 2018-09-21 | 西安工业大学 | A kind of four axis Blade measuring system and methods |
| CN208795162U (en) * | 2018-08-31 | 2019-04-26 | 河海大学常州校区 | A kind of five-axle linked blade Spectral Confocal measuring device |
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Application publication date: 20210420 |