CN112857277A

CN112857277A - Wind power yaw and pitch bearing raceway processing section measuring device, system and method

Info

Publication number: CN112857277A
Application number: CN201911190630.9A
Authority: CN
Inventors: 李庆达; 林国福; 王艳芹
Original assignee: Beijing Jingye Bearing Co ltd
Current assignee: Beijing Jingye Bearing Co ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2021-05-28

Abstract

The invention belongs to the technical field of wind power equipment measurement, and discloses a device, a system and a method for measuring a processing section of a wind power yaw and pitch bearing raceway, wherein a datum plane data measurement module is used for enabling a 2D displacement sensor to move downwards along the L direction, detecting datum plane data and storing the datum plane data; the automatic calibration module is used for realizing automatic calibration of the measurement system; the cross section shape data measuring module is used for receiving a measuring stopping signal of the 2D displacement sensor, automatically correcting a starting point and an end point of measuring data through preset workpiece height data and generating cross section shape data obtained through measurement; and the data fitting module is used for fitting the measured raceway data and displaying various data values compared with the section shape of the raceway in an ideal state. The invention improves the measurement accuracy and eliminates the interference of human factors; the operation is simple and convenient, and the labor intensity is reduced; the measurement is flexible and can be moved randomly; and the automatic judgment of whether the product is qualified or not is realized.

Description

Wind power yaw and pitch bearing raceway processing section measuring device, system and method

Technical Field

The invention belongs to the technical field of wind power equipment measurement, and particularly relates to a wind power yaw and pitch bearing raceway processing section measuring device, system and method.

Background

Currently, the closest prior art: the search shows that the article entitled "a novel rolling bearing surface morphology measuring instrument" is published by Yangxiangdong et al in bearing (2007.4). The novel rolling bearing surface appearance measuring instrument adopts a brand-new two-dimensional displacement sensor capable of crossing the surface of a part and a vertical scanning three-dimensional workbench to form a closed-loop control system, and changes the traditional contact pin moving scanning mode into a workbench moving scanning mode. However, the measuring device adopted by the device is mainly in a contact mode, the measured bearing is only a small-sized bearing, and the measurement of the profile of a large-sized bearing cannot be realized. At present, the wind power industry of China steps into a high-speed development stage, and the supply chain of the power generation fan industry is mature day by day. For important parts of the wind power fan, the requirements of yaw and pitch bearing are gradually increased. The quality requirements of customers are also increasing. The processing quality of the bearing ring raceway directly influences the reliability of the yaw and pitch bearing. The existing raceway processing mode is that large-scale numerical control vertical lathes are more, and the technology is more mature. The current raceway processing quality inspection methods commonly used in the industry are divided into two types. One is to use curvature limit templates for optical gap inspection, which is common practice. The disadvantage of this method is that the template belongs to a counting type measuring tool, so that the numerical value cannot be read out accurately. Moreover, the measurement result is influenced by human factors, and accurate reading cannot be achieved. The other method adopts an advanced oversize gantry three-coordinate measuring instrument for inspection. The method is advanced, high in measurement accuracy and simple to operate. The method has the defects that the price of the oversize three-coordinate measuring instrument which meets the requirement of detecting the external dimension of a yaw bearing and a pitch bearing (hereinafter referred to as a wind power bearing) is expensive, and most manufacturers cannot bear the measuring instrument. Therefore, the development of a device for measuring the shape of the processing section of the wind power yaw bearing and pitch bearing raceway is a priority in wind power equipment production enterprises.

In summary, the problems of the prior art are as follows: the existing measuring method of the machining size of the cross section of the raceway has the problems that the existing measuring result is easily influenced by human factors, the reading accuracy is low, the measuring error is large, and the measuring precision cannot meet the measuring requirement of a workpiece.

The difficulty of solving the technical problems is as follows: . Or the measuring equipment is expensive and the manufacturer is unable to bear the measuring equipment. The measuring method has the significance of accurately measuring the rolling surface of the yaw bearing and the pitch bearing by using a small amount of resources, and the measuring device has extremely high popularity.

The significance of solving the technical problems is as follows: can promote the improvement of the measurement technology of the whole wind power bearing industry, thereby achieving the important significance of improving the product quality, promoting the international and domestic competitiveness of domestic products and promoting the high-quality development of the industry

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a device, a system and a method for measuring the machining section of a wind power yaw bearing raceway and a pitch bearing raceway.

The invention is realized in this way, a wind power yaw and pitch bearing raceway processing section measuring system, which comprises:

the datum plane data measuring module is used for enabling the 2D displacement sensor to move downwards along the L direction, detecting datum plane data and storing the datum plane data;

the automatic calibration module is used for realizing automatic calibration of the measurement system;

the cross section shape data measuring module is used for receiving a measuring stopping signal of the 2D displacement sensor, automatically correcting a starting point and an end point of measuring data through preset workpiece height data and generating cross section shape data obtained through measurement;

and the data fitting module is used for fitting the measured raceway data, displaying each data value compared with the section shape of the raceway in an ideal state, and obtaining the radius of the raceway, the radius of an oil groove, the axial offset of the radius of the raceway, the radial offset of the radius of the raceway, the size of a datum plane at the center of the raceway, the center distance between the two raceways and the tolerance value of the processing roundness of the raceway.

Further, wind-powered electricity generation driftage, become oar bearing raceway processing cross-section measurement system still includes: a PLC controller;

and after receiving the measuring stop signal of the 2D displacement sensor, the PLC automatically corrects the starting point and the end point of the measured data through preset workpiece height data to generate a measured section shape B1.

Further, the PLC controller automatically fits the measured raceway data, and displays various data values compared with the section shape of the raceway in an ideal state on a display screen.

Another object of the present invention is to provide a wind power yaw and pitch bearing raceway processing section measuring method for operating the wind power yaw and pitch bearing raceway processing section measuring system, wherein the wind power yaw and pitch bearing raceway processing section measuring method includes:

the first step, the D displacement sensor moves downwards along the L at a constant speed, after the datum plane A data is detected, the PLC controller sends out a buzzer, the servo motor stops moving, after the datum plane A data is captured by the display screen, the measuring system automatically calibrates, and the measuring of the section shape B is continued;

secondly, pressing a continuation key, enabling the 2D displacement sensor to continuously move downwards along the L direction at a constant speed, and carrying out data scanning recording by taking the base surface A as a reference;

thirdly, when the sliding block moves to the position of the limiting block, the moving mechanism stops moving, and the 2D displacement sensor stops recording data; after the PLC receives a signal for stopping measurement of the 2D displacement sensor, point-row distance data obtained by scanning are transmitted to a data processing module through a data acquisition module, the data processing module combines the distance data of vertical movement of the sensor to obtain teaching coordinates of scanning electricity, and further two-dimensional reconstruction of the bearing profile is realized, the shape B1 and the size parameter of the bearing interface profile to be measured are obtained, and the shape deviation of the bearing section profile is obtained by comparing the size parameter with a standard drawing;

and fourthly, rotating the workpiece workbench by a plurality of angles, repeating the first step to the third step after each rotation, and measuring the profiles of a plurality of sections of the bearing to obtain the profile shapes and size parameters of the plurality of bearings.

Further, the fourth step obtains the following accurate values including raceway radiuses R1 and R2, an oil groove radius R3, raceway radius axial offsets L1/L1 ', L2/L2 ', a raceway radius R1 radial offset L3/L3 ', a raceway center datum plane size L4, a center distance L5 between two raceways and a raceway processing roundness tolerance value E.

Further, the method for measuring the machining section of the wind power yaw and pitch bearing raceway further comprises the following steps:

(1) a PLC controller is used for executing a measuring program, and the servo motor pushes the sliding block to vertically move along the guide post, so that the 2D displacement sensor performs measuring action;

(2) the direction of the 2D displacement sensor is controlled, and the moving mechanism is used for vertically moving, so that the cross section shape B, the distance C between the center of the roller path and the base surface and the distance D between the center of the two roller paths are measured by taking the surface A as a reference;

(3) as a measured workpiece to be measured, the A surface is a reference surface, namely a measurement starting point;

(4) firstly, a workpiece to be measured is placed on a horizontal workbench and is aligned by using a cushion block;

(5) placing the moving mechanism on a horizontal workbench, and according to the horizontal distance of the tested workpiece of 200 and 300 mm;

(6) controlling a servo motor to enable the sliding block to vertically move to an upper fixed point;

(7) and adjusting the 2D displacement sensor level.

Another object of the present invention is to provide a wind power yaw and pitch bearing raceway processing cross section measuring apparatus carrying the wind power yaw and pitch bearing raceway processing cross section measuring system, wherein the wind power yaw and pitch bearing raceway processing cross section measuring apparatus includes: the device comprises a servo motor, a sensor bracket, a 2D displacement sensor, a moving mechanism, a PLC (programmable logic controller), a display screen, a workpiece to be detected, a cushion block and a horizontal workbench;

the horizontal workbench is sequentially provided with a cushion block, a moving mechanism and a PLC controller from left to right; a workpiece to be detected is placed on the cushion block; the display screen is embedded on the PLC;

the moving mechanism is provided with a servo motor, a sensor support and a 2D displacement sensor, and the sensor support is connected with the 2D displacement sensor.

Further, the sensor support comprises a first sensor support tube and a first fixing clamp, and the first fixing clamp is fixed on the first sensor support tube.

Further, the 2D displacement sensor is connected with the moving mechanism through a resin connecting block, a second sensor support tube and a second fixing clamp;

the moving mechanism includes: the upper cover plate, the sliding block, the guide post, the limiting block and the bottom plate;

the upper cover plate is connected with the bottom plate through the guide post, the sliding block is fixed on the guide post, and the limiting block is installed at the bottom end of the guide post.

The invention also aims to provide application of the wind power yaw and pitch bearing raceway processing section measuring system in measurement of the working medium added to the wind power fan component.

In summary, the advantages and positive effects of the invention are: the invention overcomes the problems that the existing measuring method of the processing size of the cross section of the raceway is easy to be influenced by human factors, and the reading accuracy is low. The method adopts a high-precision 2D displacement sensor to measure the cross section shape of the raceway, measures and records the cross section data of the raceway to be measured through a laser probe, generates the coordinates of a measured object after being processed by a processing device, obtains the actual cross section profile of the raceway to be measured after the processing is finished, matches and compares the actual cross section profile with the internal cross section data of a preset processor, further removes invalid measurement interval data, and obtains a deviation range curve (only the data of the preset measurement interval is reserved).

The invention can judge whether the part processing is qualified or not more intuitively. The measurement precision is 10 μm, which completely meets the precision required by the current processing. The device is an automatic measuring device. The invention improves the measurement accuracy and eliminates the interference of human factors; the operation is simple and convenient, the labor intensity is reduced, the occupied area of manual detection in a wind power bearing detection procedure is reduced by 15 percent compared with that before the device is adopted, the measurement accuracy is improved by 38 percent, and the detection efficiency is improved by 20 percent; the measurement is flexible and can be moved randomly; and the automatic judgment of whether the product is qualified or not is realized.

Drawings

FIG. 1 is a schematic structural diagram of a wind power yaw and pitch bearing raceway processing section measuring device and system provided by an embodiment of the invention;

FIG. 2 is a flow chart of a wind power yaw and pitch bearing raceway processing section measuring method provided by the embodiment of the invention;

FIG. 3 is a schematic structural diagram of a wind power yaw and pitch bearing raceway processing section measuring device provided by an embodiment of the invention;

FIG. 4 is a schematic structural diagram of a first sensor mount tube and a first retaining clip according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a first retaining clip according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a resin connecting block, a second sensor support tube and a second fixing clip according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of an upper cover plate, a slider and a guide post according to an embodiment of the present invention;

FIG. 8 is a schematic view of a measured cross-sectional shape provided by an embodiment of the present invention;

FIG. 9 is a schematic diagram of data values of cross-sectional shapes of raceways provided by an embodiment of the present invention;

in the figure: 1. a datum data measuring module; 2. an automatic calibration module; 3. a cross-sectional shape data measuring module; 4. a data fitting module; 5. a servo motor; 6. a sensor holder; 7. a 2D displacement sensor; 8. a moving mechanism; 9. a PLC controller; 10. a display screen; 11. a first sensor mount tube; 12. a first fixing clip; 13. resin connecting blocks; 14. a second sensor support tube; 15. a second fixing clip; 16. an upper cover plate; 17. a slider; 18. a guide post; 19. a limiting block; 20. a base plate; 21. a workpiece to be tested; 22. cushion blocks; 23. a horizontal working table.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Aiming at the problems in the prior art, the invention provides a device, a system and a method for measuring the machining section of a wind power yaw bearing and a pitch bearing raceway, and the invention is described in detail by combining the attached drawings.

As shown in fig. 1, a wind power yaw and pitch bearing raceway processing section measuring system provided by the embodiment of the invention includes:

and the datum data measuring module 1 is used for enabling the 2D displacement sensor to move downwards along the L direction, detecting datum data and storing the datum data.

And the automatic calibration module 2 is used for realizing automatic calibration of the measurement system.

And the section shape data measuring module 3 is used for receiving a signal for stopping the measurement of the 2D displacement sensor, automatically correcting the starting point and the end point of the measurement data according to the preset workpiece height data, and generating the section shape data obtained by measurement.

And the data fitting module 4 is used for fitting the measured raceway data, displaying each data value compared with the section shape of the raceway in an ideal state, and obtaining the radius of the raceway, the radius of an oil groove, the axial offset of the radius of the raceway, the radial offset of the radius of the raceway, the size of a datum plane at the center of the raceway, the center distance between the two raceways and the tolerance value of the processing roundness of the raceway.

As shown in fig. 2, the method for measuring the machining section of the wind power yaw and pitch bearing raceway provided by the embodiment of the invention comprises the following steps:

s201: d, the displacement sensor moves downwards along the L at a constant speed, after the datum plane A data is detected, the PLC controller sends out a buzzer, the servo motor stops moving, and after the datum plane A data is captured by the display screen, the measuring system automatically calibrates and continues to measure the section shape B;

s202: pressing a continuation key, continuously moving the 2D displacement sensor downwards along the L direction at a constant speed, and scanning and recording data by taking the base surface A as a reference;

s203: when the sliding block moves to the position of the limiting block, the moving mechanism stops moving, and the 2D displacement sensor stops recording data; after the PLC receives a signal for stopping measurement of the 2D displacement sensor, point-row distance data obtained by scanning are transmitted to a data processing module through a data acquisition module, the data processing module combines the distance data of vertical movement of the sensor to obtain teaching coordinates of scanning electricity, and further two-dimensional reconstruction of the bearing profile is realized, the shape B1 and the size parameter of the bearing interface profile to be measured are obtained, and the shape deviation of the bearing section profile is obtained by comparing the size parameter with a standard drawing;

s204: and rotating the workpiece workbench by a plurality of angles, repeating S201-S203 after each rotation, and measuring the profiles of a plurality of cross sections of the bearing to obtain the profile shape and size parameters of the bearing. The following accurate values are obtained, wherein the accurate values comprise raceway radiuses R1 and R2, an oil groove radius R3, raceway radius axial offset L1/L1 ', L2/L2 ', raceway radius R1 radial offset L3/L3 ', raceway center datum plane size L4, two raceway center distance L5 and raceway processing roundness tolerance value E.

The technical solution of the present invention is further described below with reference to the accompanying drawings.

As shown in fig. 3 to 7, a wind power yaw and pitch bearing raceway processing section measuring device provided by the embodiment of the present invention includes: the device comprises a servo motor 5, a sensor support 6, a 2D displacement sensor 7, a moving mechanism 8, a PLC (programmable logic controller) 9, a display screen 10, a first sensor support pipe 11, a first fixing clamp 12, a resin connecting block 13, a second sensor support pipe 14, a second fixing clamp 15, an upper cover plate 16, a sliding block 17, a guide column 18, a limiting block 19, a bottom plate 20, a workpiece to be measured 21, a cushion block 22 and a horizontal workbench 23.

The cushion block 22, the moving mechanism 8 and the PLC 9 are sequentially arranged on the horizontal workbench 23 from left to right; the workpiece 21 to be detected is placed on the cushion block 22; the display screen 10 is embedded on the PLC controller 9.

The moving mechanism 8 is provided with a servo motor 5, a sensor support 6 and a 2D displacement sensor 7, and the sensor support 6 is connected with the 2D displacement sensor 7.

The sensor holder 6 includes a first sensor holder tube 11, a first fixing clip 12, and the first fixing clip 12 is fixed on the first sensor holder tube 11.

The 2D displacement sensor 7 is connected with the moving mechanism 8 through a resin connecting block 13, a second sensor support tube 14 and a second fixing clamp 15.

The moving mechanism 8 includes: an upper cover plate 16, a sliding block 17, a guide post 18, a limiting block 19 and a bottom plate 20; the upper cover plate 16 is connected with the bottom plate 20 through the guide posts 18, the sliding block 17 is fixed on the guide posts 18, and the limiting block 19 is installed at the bottom ends of the guide posts 18.

The method for measuring the processing section of the wind power yaw and pitch bearing raceway provided by the embodiment of the invention specifically comprises the following steps:

in the first step, the PLC controller 9 executes a measurement program to push the slide block 17 from the servo motor 5 to perform a vertical (L-direction) movement along the guide post 18. Thereby causing the 2D displacement sensor 7 to perform a measuring operation.

In the second step, the direction of the 2D displacement sensor 7 is controlled and the vertical (L direction) movement is performed by the moving mechanism 8, thereby measuring the cross-sectional shape B (fig. 8, the shape at the bold black line, which includes the raceway radius, the oil gallery radius), the raceway center-to-base distance C, and the two raceway center-to-center distance D, with the a plane as a reference.

Third, in fig. 8, as the measured workpiece 21 to be measured, the a plane is a reference plane, i.e., a measurement start point. The thick part of the black line is the measured section part, and the measured part is a continuous curved surface.

Fourthly, the workpiece 21 to be measured is firstly placed on the horizontal workbench 23 and is aligned by the cushion block 22.

Fifthly, the moving mechanism 8 is placed on the horizontal workbench, and the horizontal distance is 200-300mm according to the workpiece 21 to be detected.

And sixthly, controlling the servo motor 5 to enable the sliding block 17 to move to the upper fixed point along the vertical direction (L direction).

And seventhly, adjusting the 2D displacement sensor 7 to be horizontal.

And eighthly, controlling the servo motor 5 and moving the 2D displacement sensor 7 to perform specific measurement after the operation is completed.

And ninthly, firstly, in order to measure the datum plane A data, the probe is enabled to move downwards at a constant speed (in the L direction), after the datum plane A data is detected, the PLC 9 sends out a buzzer, the servo motor 5 stops moving, the display screen 10 displays that the datum plane A data is captured, and then the measuring system is automatically calibrated, so that the lower part measurement can be carried out. The continue key may be pressed to continue measuring cross-sectional shape B.

And step ten, pressing a continue key, continuously moving the 2D displacement sensor 7 downwards along the direction L at a constant speed, and recording data by taking the base surface A as a reference.

And eleventh, when the slide block 17 moves to the position of the limit block 19, the moving mechanism 8 stops moving. The 2D displacement sensor 7 stops recording data. After receiving the signal for stopping measurement by the 2D displacement sensor 7, the PLC 9 automatically corrects the starting point and the end point of the measurement data through preset workpiece height data. The measured cross-sectional shape B1 is then generated.

As the size of the yaw bearing ring and the pitch bearing ring is larger, the cross section shapes of the raceways at 4 positions on the circumference can be selected according to the standard requirement.

And a twelfth step, automatically fitting the measured raceway data through a PLC (data processing device) 9, displaying data values (see fig. 9) compared with the section shape of the raceway in an ideal state on a display screen 10, and obtaining the following accurate values including raceway radiuses R1 and R2, an oil groove radius R3, a raceway radius axial offset L1/L1 ', L2/L2 ', a raceway radius R1 radial offset L3/L3 ', a raceway center data base surface size L4, a center distance L5 of the two raceways and a raceway machining roundness tolerance value E.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a wind-powered electricity generation driftage, change oar bearing raceway processing cross-section measurement system which characterized in that, wind-powered electricity generation driftage, change oar bearing raceway processing cross-section measurement system includes:

2. The wind power yaw and pitch bearing raceway processing cross-section measuring system of claim 1, wherein the wind power yaw and pitch bearing raceway processing cross-section measuring system further comprises: a PLC controller;

3. The wind power yaw and pitch bearing raceway processing cross-section measuring system of claim 2, wherein the PLC controller automatically fits the measured raceway data, and displays on a display screen data values comparing the raceway cross-section shape with that in an ideal state.

4. A wind power yaw and pitch bearing raceway processing section measuring method operating the wind power yaw and pitch bearing raceway processing section measuring system according to any one of claims 1 to 3 is characterized by comprising the following steps:

5. The wind power yaw and pitch bearing raceway machining cross section measuring method according to claim 4, characterized in that the fourth step obtains the following accurate values including raceway radii R1, R2, an oil groove radius R3, raceway radius axial offsets L1/L1 ', L2/L2 ', raceway radius R1 radial offsets L3/L3 ', raceway center datum plane size L4, two raceway center distances L5 and raceway machining roundness tolerance E.

6. The method for measuring the machining section of the wind power yaw and pitch bearing raceway according to claim 4, wherein the method for measuring the machining section of the wind power yaw and pitch bearing raceway further comprises:

(7) and adjusting the 2D displacement sensor level.

7. A wind power yaw and pitch bearing raceway processing section measuring device carrying the wind power yaw and pitch bearing raceway processing section measuring system according to any one of claims 1 to 3 is characterized by comprising: the device comprises a servo motor, a sensor bracket, a 2D displacement sensor, a moving mechanism, a PLC (programmable logic controller), a display screen, a workpiece to be detected, a cushion block and a horizontal workbench;

8. The wind power yaw and pitch bearing raceway processing cross-section measuring device of claim 7, wherein the sensor mount comprises a first sensor mount tube, a first retaining clip, the first retaining clip being fixed to the first sensor mount tube.

9. The wind power yaw and pitch bearing raceway processing section measuring device according to claim 7, wherein the 2D displacement sensor is connected with the moving mechanism through a resin connecting block, a second sensor support tube, and a second fixing clamp;

10. An application of the wind power yaw and pitch bearing raceway processing section measuring system according to any one of claims 1 to 3 in measurement of working medium added to a wind power fan component.