Precision detection device for gear processing

Abstract

The invention relates to a precision detection device for gear processing, which is suitable for detecting the dynamic performance and single tooth precision of a gear, and comprises a base, a rotating bracket, a fixed block, a motor, a reduction gearbox, a test gear, a to-be-tested gear, a main measuring rod, a plurality of measuring rods and the like. High-precision detection of gear dynamic balance, vibration parameters and the tooth outer end and the contour line of a single gear is achieved, the reduction gearbox reduces the rotating speed of the gear and strengthens torque control, and the gear thickness difference design is matched, so that the multiple measuring rods can slide along the tooth outer end of the gear, tooth surface deformation and the contact state are accurately detected, and the device is made of high-carbon low-alloy tool steel. The gear detection device has high strength and wear resistance, adapts to various gear specifications, can output detection data and analysis results in real time, is simple to operate, high in detection precision and high in applicability, and can be widely applied to the fields of gear manufacturing, quality detection and maintenance.

Description

Technical Field

[0001] The present invention relates to a gear machining accuracy detection device, and in particular to a gear machining accuracy detection device applied in the field of manufacturing technology. Background Art

[0002] The main purpose of gear precision testing is to ensure the transmission performance and reliability of gears in actual work. By testing the dynamic performance (such as vibration, dynamic balance) and static accuracy (such as tooth shape, tooth pitch, tooth surface profile, etc.) of gears, defects in gear manufacturing or operation can be discovered, and the processing technology can be optimized in time to improve product quality. At the same time, through testing, it is ensured that the gears meet the design standards to avoid mechanical failures or efficiency reduction caused by precision problems. Existing gear precision testing technologies usually face problems such as complex structure, single function, and insufficient adaptability.

[0003] Chinese invention patent CN112683209B discloses a linear gear processing accuracy detection platform with high positioning accuracy and detection capability. Its design adopts grating ruler, servo motor and XY axis translation stage to realize closed-loop control, and adjusts the position of detection sensor through Z axis lifting platform to meet the high-precision detection requirements of linear gear processing accuracy. However, the detection scope of this patent is limited to linear gears, and the detection capability for complex-shaped or curved gears is limited. It mainly focuses on static parameter detection and lacks detection support for dynamic performance of gears (such as vibration and dynamic balance). The overall structure is complex and the equipment is large in size. It is not suitable for small detection scenarios or applications with strong economic requirements.

[0004] Chinese invention patent CN117570854B discloses a gear processing accuracy detection device, which can realize accurate analysis of gears through light sources, imaging components and sensing components, especially has high flexibility and stability in detecting gears of complex shapes. However, the patented detection device relies on optical imaging and is sensitive to changes in ambient light. Although the detection effect is optimized by backlight and ring light sources, the detection of non-optical visible characteristics is still insufficient. The device pays more attention to the appearance and tooth surface profile detection of the gear, and does not cover the dynamic performance or mechanical characteristics analysis of the gear in the meshing state. Although the rotary drive component supports comprehensive rotation detection, the detection accuracy is affected by the instability of gear rotation.

[0005] In summary, although the above patents have proposed a variety of improved methods for gear precision detection, they still have certain limitations, such as insufficient detection of dynamic performance and single tooth profile accuracy, limited adaptability, complex structure, and low economy. Summary of the invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is how to solve the problem of insufficient dynamic performance detection and single tooth profile accuracy detection in the gear accuracy detection process.

[0007] In order to solve the above problems, the present invention provides a precision detection device for gear processing, including a controller and a base, the top of the base is rotatably connected to a rotating bracket, the bottom end of the rotating bracket is fixedly connected to a fixed block, the bottom end of the base is fixedly connected to motor 1 and motor 2, the power shafts of motor 1 and motor 2 both penetrate the base, and the upper sides of the penetration parts are respectively provided with a test gear and a gear to be tested, the top ends of the power shafts of motor 1 and motor 2 are respectively fixedly connected to bracket 1 and bracket 2, the top end of bracket 1 is rotatably connected to the bottom end of the fixed block, the outer end of bracket 2 is rotatably connected to a fixed end head, the end of the fixed end head away from bracket 2 is fixedly connected to a main measuring rod, the end of the main measuring rod away from the fixed end penetrates the fixed block and is slidably connected to the fixed block, and the outer end of the main measuring rod is slidably connected to a slider The main measuring rod, the measuring rod one and the measuring rod two are rotatably connected through a fixed end to the slider one end, the outer ends of the main measuring rod, the measuring rod one and the measuring rod two are respectively slidably connected to the measuring slider one, the measuring slider two and the measuring slider three, a plurality of driving coils are fixedly connected inside the main measuring rod, the measuring rod one and the measuring rod two, a plurality of permanent magnets are fixedly connected inside the measuring slider one, the measuring slider two and the measuring slider three, the bottom ends of the measuring slider one, the measuring slider two and the measuring slider three are all fixedly connected to measuring rods, the main measuring rod, the measuring rod one and the measuring rod two are all provided with fiber Bragg gratings, the motor one, the motor two and the coils inside the main measuring rod, the measuring rod one and the measuring rod two and the plurality of fiber Bragg gratings are all electrically connected to the controller.

[0008] The ends of the measuring rod 1 and the measuring rod 2 away from the bracket 2 are both rotatably connected to symmetrically arranged auxiliary rods through fixed ends, and the ends of the symmetrically arranged auxiliary rods away from the bracket 2 are both rotatably connected to the slider 1 through fixed ends.

[0009] An angle measuring sleeve is fixedly connected to the bottom end of the rotating bracket. A measuring slot for measuring angle and position is provided in the angle measuring sleeve. The angle measuring sleeve is electrically connected to the controller.

[0010] The outer ends of the main measuring rod, measuring rod one and measuring rod two are all slidably connected to the measuring groove of the angle measuring sleeve. A grating ruler for measuring angle change and displacement is arranged in the measuring groove of the angle measuring sleeve, and the grating ruler is electrically connected to the controller.

[0011] The cross sections of the main measuring rod, measuring rod one and measuring rod two are all square structures, and the diagonal lines connecting the squares in the vertical direction are parallel to the axis of the bracket one.

[0012] The measuring rod is a cylindrical structure, and the diameter of the measuring rod is smaller than the distance between the roots of two adjacent teeth on the gear to be tested. The outer ends of the test gear and the gear to be tested are meshed with each other.

[0013] The main measuring rod, measuring rod one, measuring rod two and measuring rod are all made of high-carbon low-alloy tool steel.

[0014] A reduction gear is provided between the power shafts of motor one and motor two and the test gear and the gear to be tested, and the reduction gear input shaft is fixedly connected to the corresponding power shafts of motor one and motor two, and the reduction gear output shaft is clamped with the corresponding test gear and the gear to be tested.

[0015] The thickness of the test gear along its axial direction is one third of the thickness of the gear to be tested along its axial direction, and the bottom ends of the test gear and the gear to be tested are located in the same plane. The thickness difference between the test gear and the gear to be tested is used to enable multiple measuring rods to slide along the outer end of each tooth of the gear to be tested.

[0016] In summary, this application has the following beneficial effects:

[0017] 1. The device supports multiple detection modes. It can monitor the dynamic balance and vibration parameters of the gear as a whole, accurately detect the outer end deformation, tooth surface contact changes and tooth root problems of a single tooth, and conduct detailed analysis of the contour line and shape defects of a single tooth. It realizes the multifunctionality of gear detection. The detection range covers the dynamic performance and static accuracy of the gear. Through comprehensive analysis, it ensures that the gear processing quality meets the actual application requirements.

[0018] 2. The fiber Bragg gratings embedded in the main measuring rod, measuring rod one and measuring rod two can capture the vibration and deformation signals of the rod body in real time. Combined with the displacement and angle data of the grating scale, sub-millimeter high-precision detection is achieved. The cylindrical design and diameter optimization of the measuring rod enable it to freely penetrate into the root area of ​​the gear and accurately contact the outer end and tooth surface of each tooth, thereby achieving accurate identification of tiny defects.

[0019] 3. The device provides rigid support for the overall structure through the reasonable connection between the rotating bracket and the base, reducing the error caused by vibration or displacement during the detection process. The symmetrical design of the auxiliary rod provides additional support for measuring rods one and two, enhancing the stability of the entire measurement system and ensuring the reliability of the detection data.

[0020] 4. A reduction gearbox is set between the motor and the test gear and the gear to be tested. By reducing the gear speed and enhancing the torque control, the gear meshing process is smoother, avoiding vibration interference caused by high-speed rotation, and improving the detection accuracy and stability. The power transmission of the reduction gearbox enables the device to simulate the actual working conditions of the gear under low speed and high torque, providing real working condition support for accurate detection.

[0021] 5. The thickness difference design between the test gear and the gear to be tested ensures that the measuring rod can slide freely along the outer end of each tooth of the gear to be tested, so as to realize the comprehensive detection of the shape accuracy and contour line of a single tooth. Through multiple measuring rods, the outer end and tooth surfaces on both sides of a single tooth are contact measured at the same time, and accurate data can be obtained from multiple angles, which further improves the comprehensiveness and accuracy of single tooth detection.

[0022] 6. The main measuring rod, measuring rod 1, measuring rod 2 and measuring rod are all made of high-carbon low-alloy tool steel, which has excellent strength, rigidity and wear resistance, and can withstand long-term high-intensity detection work. The square cross-section design of the measuring rod not only enhances the torsion resistance, but also makes it more stable during the detection process, reducing the measurement error caused by torsion.

[0023] 7. The design of the rotating bracket enables the device to be quickly adjusted to the optimal detection angle. The sliding connection of the slider provides a precise positioning function for the contact point between the measuring rod and the gear, which greatly simplifies the operation process. The reduction box and the snap-on gear installation method enable the device to quickly adapt to the detection needs of gears of different specifications and sizes, thereby improving operational efficiency.

[0024] 8. The controller collects the detection data of the fiber Bragg grating, grating ruler and measuring rod in real time, and combines the built-in algorithm to quickly complete the data processing, and can instantly output the detection results such as the dynamic balance, vibration parameters, and single tooth shape defects of the gear.

[0025] 9. This device is suitable for the detection of gears of various specifications, especially for the contour and shape detection of high-precision gears and complex gears. It has a wide range of application value in the fields of gear manufacturing, quality inspection and maintenance, and provides a strong guarantee for improving the reliability and performance of the gear transmission system. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is the overall structure diagram of this application;

[0027] Figure 2 This is an overall exploded view of this application;

[0028] Figure 3 For this application, the explosion Figure 1 ;

[0029] Figure 4 For this application, the explosion Figure 2 ;

[0030] Figure 5 For this application, the explosion Figure 3 ;

[0031] Figure 6 A side view of the present application;

[0032] Figure 7 For this application Figure 6 Middle AA section view;

[0033] Figure 8 For this application Figure 7 Middle BB section view;

[0034] Fig. 9 A top view of the present application;

[0035] Fig.10 This is the appearance structure diagram of this application.

[0036] Description of the numbers in the figure:

[0037] 1. Base; 2. Rotating bracket; 3. Fixed block; 4. Motor 1; 5. Motor 2; 6. Test gear; 7. Gear to be tested; 8. Bracket 1; 9. Bracket 2; 10. Fixed end; 11. Main measuring rod; 12. Slider 1; 13. Slider 2; 14. Measuring rod 1; 15. Measuring rod 2; 16. Measuring slider 1; 17. Measuring slider 2; 18. Measuring slider 3; 19. Measuring rod; 20. Auxiliary rod; 21. Angle measuring sleeve. DETAILED DESCRIPTION

[0038] Three embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0039] Embodiment 1:

[0040] like Figures 1 to 10 As shown, this embodiment provides a structure, working principle and application of a precision detection device for gear processing in detection mode one.

[0041] The base 1 is the supporting foundation of the entire device to ensure stability. The top of the base is rotatably connected to a rotating bracket 2 through a bearing assembly to facilitate angle adjustment of the device.

[0042] The lower end of the rotating bracket 2 is fixedly connected to the fixed block 3, which is used to carry the main measuring rod 11 and related components, and provide key support for the detection of the entire device.

[0043] Motor 1 4 and motor 2 5 are installed at the bottom of the base 1, and respectively drive the test gear 6 and the gear to be tested 7 to rotate through the power shaft to simulate the gear meshing process.

[0044] The main measuring rod 11 is a core detection component, which passes through the fixed block 3 and is flexibly adjusted through a sliding connection. The outer end of the main measuring rod 11 is slidably connected to the slider 1 12 and the slider 2 13 to provide additional support and measurement functions.

[0045] The measuring rods 14 and 15 are fixed to the second slider 13 through a symmetrical structure, and are used to support the detection operation of the measuring slider and the measuring rods. The outer ends are connected to the second measuring slider 17 and the third measuring slider 18.

[0046] The fiber Bragg grating is embedded in the main measuring rod 11, the measuring rod 14 and the measuring rod 15 to capture the deformation and vibration of the rod body during operation.

[0047] The angle measuring sleeve 21 is installed at the bottom end of the rotating bracket 2, has a measuring slot inside and is equipped with a grating ruler, and is electrically connected to the controller for real-time detection of angle and displacement.

[0048] Material and cross-section optimization design: The main measuring rod 11, measuring rod 14, measuring rod 15 and measuring rod 19 are all made of high-carbon low-alloy tool steel with high strength and wear resistance. The cross-section of the measuring rod is square, and the vertical diagonal line is parallel to the axis of the bracket -8, which improves torsional strength and detection accuracy.

[0049] Working process

[0050] The operator first manually rotates the rotating bracket 2 to make it perpendicular to the horizontal plane, so as to subsequently install the test gear 6 and the gear to be tested 7.

[0051] The test gear 6 and the gear to be tested 7 are respectively installed on the corresponding output shafts of the reduction gearbox, and the gears are fixed and not loosened by a manual locking mechanism.

[0052] Manually adjust the rotating bracket 2 to restore it to a horizontal state so that the tops of the test gear 6 and the gear to be tested 7 are parallel. At this time, the fixed end 10 on the fixed block 3 and the main measuring rod 11 are rotatably connected to the outer ends of bracket one 8 and bracket two 9 respectively to ensure the stability and centration of the measuring system.

[0053] Gear inspection preparation:

[0054] Start the controller and set detection mode 1.

[0055] The controller drives the motor 1 4 and the motor 2 5 to drive the test gear 6 and the gear to be tested 7 to engage and rotate.

[0056] At the same time, the fiber Bragg grating starts to collect vibration signals of the main measuring rod 11 , the measuring rod 14 and the measuring rod 15 in real time.

[0057] Data collection and processing:

[0058] During the meshing and rotating process of the gears, the fiber Bragg grating captures the dynamic balance and vibration-related parameters of the gear 7 to be tested by detecting the tiny deformation and vibration signals of the rod.

[0059] The controller uses a built-in algorithm to perform real-time analysis on the vibration data to determine whether the gear 7 to be tested has imbalance, uneven meshing or other defects.

[0060] In addition, the angle measuring sleeve 21 detects the angle change and displacement of the main measuring rod 11, the measuring rod 14 and the measuring rod 15 through the grating ruler, and provides supplementary data for vibration analysis.

[0061] The fiber Bragg gratings in the main measuring rod 11, the measuring rod 14 and the measuring rod 15 can monitor vibration data in real time, capture every subtle vibration and dynamic change in the operation of the gear, and ensure detection accuracy. Especially when detecting dynamic balance, the fiber Bragg grating has extremely high sensitivity and can quickly identify the imbalance state of the gear.

[0062] The measuring rod adopts a square cross-section design, which makes it have strong torsion resistance and can maintain measurement accuracy even under high load conditions. The material of the measuring rod, slider and main measuring rod is high-carbon low-alloy tool steel, which not only enhances the strength but also significantly extends the service life of the device.

[0063] The use of the angle measuring sleeve 21 in conjunction with the grating ruler provides additional angle and displacement information, providing more data support for the comprehensive analysis of the dynamic balance characteristics and meshing accuracy of the gear.

[0064] The design of the rotating bracket 2 enables the device to be flexibly adjusted to the optimal working angle, while the sliding connection design of the slider assembly ensures the precise alignment of the contact point between the measuring rod and the gear, reducing human adjustment errors.

[0065] The device is suitable for detecting gears of various specifications, and parameter changes between different gears can be easily adapted by adjusting the rotating bracket 2 and the slider assembly.

[0066] This embodiment describes in detail the specific operating steps and advantages of the device, and demonstrates its efficient performance in gear processing accuracy detection. This device not only has the characteristics of simple structure and easy operation, but also can achieve high-precision data collection and analysis in complex gear detection scenarios.

[0067] Embodiment 2:

[0068] like Figures 1 to 10 As shown, based on Example 1, Example 2 further expands the detection function of the device, focusing on the accuracy detection of a single gear tooth, including its working principle, specific implementation process and corresponding beneficial effects.

[0069] This embodiment adds the following designs and functions to the basic structure of embodiment 1:

[0070] The ends of the measuring rod 14 and the measuring rod 2 15 away from the bracket 2 9 are rotatably connected to the symmetrically arranged auxiliary rods 20 through the fixed ends 10 respectively.

[0071] The other end of the auxiliary rod 20 is rotatably connected to the slider 12 through the fixed end 10 to form a stable symmetrical support structure. This design not only enhances the stability of the measuring rod, but also improves the accuracy of single-tooth detection.

[0072] The measuring rod 19 is a cylindrical structure, and its diameter is smaller than the distance between the roots of two adjacent teeth on the gear 7 to be tested.

[0073] The finely designed measuring rod 19 can be freely extended into the tooth root area to achieve accurate measurement of the outer end of a single gear tooth and both ends of the tooth surface.

[0074] The outer ends of the test gear 6 and the gear to be tested 7 remain meshed, ensuring that the gears can simulate a real meshing state during the testing process, providing a reliable basis for single-tooth precision testing.

[0075] Working process

[0076] The operator first adjusts the rotating bracket 2 to make it perpendicular to the horizontal plane to facilitate the installation of the test gear 6 and the gear to be tested 7.

[0077] The test gear 6 and the gear to be tested 7 are respectively mounted on the corresponding output shafts of the reduction gearbox, and the rotating bracket 2 is adjusted to restore it to a horizontal state.

[0078] Ensure that the fixed block 3 is correctly connected to the main measuring rod 11, and adjust the slider 1 12, the slider 2 13 and the slider 3 18 to their initial positions.

[0079] Gear meshing and detection:

[0080] Start the controller and select detection mode 2.

[0081] The controller drives the motor 1 4 and the motor 2 5 to drive the test gear 6 and the gear to be tested 7 to achieve meshing rotation, and at the same time applies torque in opposite directions so as to perform mechanical analysis on a single tooth of the gear to be tested 7 .

[0082] The controller uses the main measuring rod 11 to drive the measuring slider 16 to move so that the measuring rod 19 on it abuts against the outermost end of a tooth of the gear 7 to be tested.

[0083] At the same time, the controller uses the measuring rod 1 14 and the measuring rod 2 15 to drive the measuring slider 2 17 and the measuring slider 3 18 respectively, so that the measuring rods 19 thereon contact with the two ends of the tooth surface of the gear 7 to be tested.

[0084] The controller collects the displacement, force and deformation data of each contact point on the measuring rod 19, and analyzes the outer end deformation, tooth surface contact changes and tooth root problems of a single tooth through a built-in algorithm.

[0085] Fiber Bragg gratings are embedded in the main measuring rod 11, the measuring rod 14, and the measuring rod 15 to capture the deformation and vibration signals of the detection rods in real time.

[0086] Based on the detection data of a single tooth, the controller further analyzes whether there are problems with the gear accuracy, such as tooth surface wear, tooth profile deviation or tooth root deformation.

[0087] The cylindrical measuring rod 19 has a diameter smaller than the distance between adjacent tooth roots of the gear 7 to be tested, so that the measuring rod 19 can accurately contact the tooth root and tooth surface. This precise detection can discover tiny defects of a single tooth of the gear and improve detection accuracy.

[0088] The newly added auxiliary rod 20 provides additional support for the measuring rods 14 and 15 through a symmetrical connection structure, further reducing jitter and offset during the measurement process, and improving the stability and repeatability of the detection process.

[0089] The test gear 6 is meshed with the gear to be tested 7, and opposite torques are applied by motor 1 4 and motor 2 5 to simulate the stress conditions of the gears during actual operation, providing a more realistic test environment for single-tooth detection.

[0090] All measuring rods, including the main measuring rod 11, the measuring rod 14, the measuring rod 15 and the measuring rod 19, are made of high-carbon low-alloy tool steel, which can not only withstand high-intensity tests but also effectively resist wear and tear, thereby extending the service life of the device.

[0091] The cylindrical structure and movable design of the measuring rod 19 enable it to adapt to gears of various specifications, while the symmetrical support design of the auxiliary rod 20 makes the measuring rod system more adaptable and suitable for various complex detection scenarios.

[0092] Embodiment 2 expands the structure of the device so that it can not only realize the dynamic balance detection of the entire gear, but also accurately detect the accuracy of a single tooth, providing a more comprehensive technical guarantee for the gear processing quality.

[0093] Embodiment 3:

[0094] like Figures 1 to 10 As shown, based on Example 1, Example 2 further optimizes the device structure, focusing on realizing the profile accuracy detection of a single gear tooth.

[0095] This embodiment adds the following design based on the embodiment 1:

[0096] A reduction gear box is provided between the power shafts of the motor 1 4 and the motor 2 5 and the test gear 6 and the gear to be tested 7 .

[0097] The input shaft of the reduction box is fixedly connected to the power shafts of the motor 1 4 and the motor 2 5 , and the output shaft of the reduction box is connected to the test gear 6 and the gear to be tested 7 by means of a snap connection.

[0098] This design reduces the gear speed, improves the control accuracy of the torque during gear meshing, and provides a more stable operating environment for detection.

[0099] The thickness of the test gear 6 along its axial direction is one third of the thickness of the gear 7 to be tested.

[0100] The bottom ends of the test gear 6 and the gear to be tested 7 are located in the same plane. This thickness difference design ensures that the multiple measuring rods 19 can slide along the outer end of each tooth of the gear to be tested 7.

[0101] The measuring rod can accurately detect the outer end and tooth surface contour of a single tooth by sliding.

[0102] Working process

[0103] The operator installs the test gear 6 and the gear to be tested 7 on the output shaft of the reduction gearbox and fixes them by snapping.

[0104] Adjust the rotating bracket 2 to make it parallel to the horizontal plane to ensure that the connection between the fixed block 3 and the main measuring rod 11 and other measuring components is stable.

[0105] Start the controller and select detection mode 3, set the initial speed and torque.

[0106] Start the motor 1 4 and the motor 2 5, and transmit the power through the reduction box to drive the test gear 6 and the gear to be tested 7 to achieve precise meshing at a lower speed.

[0107] The controller monitors the gear speed and applied torque in real time to ensure stable gear meshing.

[0108] Single tooth profile detection:

[0109] The controller uses the main measuring rod 11 to drive the measuring slider 16 so that the measuring rod 19 on it abuts against the outer end of a tooth of the gear 7 to be tested.

[0110] At the same time, the controller drives the measuring rod 1 14 and the measuring rod 2 15 to respectively drive the measuring slider 2 17 and the measuring slider 3 18 , so that the measuring rods 19 thereon respectively contact with the two ends of the tooth surface of the tooth.

[0111] During the inspection process, the measuring rod slides along the thickness direction and contour line of the gear, and collects the displacement, deformation and force data of each contact point in real time.

[0112] The controller combines the data collected by the fiber Bragg grating and the grating ruler to conduct a comprehensive analysis of the outer end deformation, tooth surface contour line and contact point accuracy of a single tooth.

[0113] The controller processes the detection data of each measuring rod 19 through a built-in algorithm to analyze the profile deviation, tooth surface wear and shape defects of a single tooth.

[0114] The test results are output in the form of charts, providing data support for further optimization of gear processing accuracy.

[0115] The reduction box reduces the motor output speed and amplifies the output torque, making the gear meshing process smoother, thereby improving the stability of the detection process and the measurement accuracy. Even under low speed and high torque conditions, the device can still measure accurately.

[0116] The thickness difference design between the test gear 6 and the gear to be tested 7 ensures that the measuring rod 19 can slide smoothly along the outer end of each tooth of the gear to be tested 7. This design greatly improves the detection capability of the contour line and shape defects of a single gear tooth.

[0117] The contact between the measuring rod 19 and the outer end of the gear tooth and both ends of the tooth surface realizes the three-dimensional profile accuracy detection of a single tooth, covering multiple parameter analyses such as tooth surface shape, tooth profile deviation and tooth root change.

[0118] By testing the actual meshing state of the gear 6 and the gear to be tested 7, the force and transmission behavior of the gear under working conditions are simulated, making the test results more valuable for reference.

[0119] The controller collects data from the fiber Bragg grating and grating ruler in real time and performs comprehensive analysis, which can quickly output gear detection results and significantly improve work efficiency.

[0120] The combination of the reduction box and the thickness difference design enables the device to adapt to the detection needs of gears of different specifications, and is especially suitable for contour accuracy detection of high-precision and complex gears.

[0121] The detailed description of Example 3 fully demonstrates the superior performance and wide applicability of the device in single tooth profile accuracy detection. The device can not only detect the overall performance of the gear, but also go deep into the details of a single tooth, providing important technical support for gear manufacturing and maintenance.

[0122] When in use, manually rotate the rotating bracket 2 so that the rotating bracket 2 is perpendicular to the horizontal plane, and then the test gear 6 for testing and the gear to be tested 7 to be tested are respectively clamped to the output shafts of the corresponding reduction gears on the test gear 6 and the gear to be tested 7;

[0123] Then manually rotate the rotating bracket 2 so that the rotating bracket 2 is parallel to the top of the test gear 6 and the gear to be tested 7. At this time, the fixed end 10 on the fixed block 3 and the main measuring rod 11 is rotatably connected to the outer ends of the bracket 1 8 and the bracket 2 9 respectively;

[0124] Then, the corresponding motor 1 4 and motor 2 5 are started by the controller as needed, and the motor 1 4 and motor 2 5 drive the corresponding test gear 6 and the gear to be tested 7 to rotate during the rotation process, and apply torque to the test gear 6 and the gear to be tested 7;

[0125] In detection mode 1, the test gear 6 and the gear to be tested 7 mesh with each other and rotate. During the rotation, the fiber Bragg gratings on the main measuring rod 11, the measuring rod 14 and the measuring rod 2 15 monitor the vibration of the test gear 6 and the gear to be tested 7 in real time. The controller analyzes the dynamic balance and other vibration-related parameters of the gear to be tested 7 through the vibration.

[0126] Detection mode two, using the main measuring rod 11 through the controller to drive the measuring slider 1 16 to move, and the measuring rod 19 on the measuring slider 1 16 is pressed against the outermost end of one of the teeth on the gear 7 to be tested, and the corresponding measuring slider 2 17 and measuring slider 3 18 are driven by the measuring rod 14 and measuring rod 2 15 through the controller, so that the measuring rods 19 on the measuring slider 2 17 and measuring slider 3 18 are in contact with both ends of the tooth surface of the gear 7 to be tested, and opposite torques are applied to the test gear 6 and the gear 7 to be tested through the motor 1 4 and the motor 2 5, and the measuring rods 19 on the measuring slider 1 16, the measuring slider 2 17 and the measuring slider 3 18, as well as the main measuring rod 11, the measuring rod 14 and the measuring rod 2 15 are used to detect the changes of a single tooth on the gear 7 to be tested in real time, so that the controller analyzes the problems and defects of this tooth;

[0127] Detection mode three, the main measuring rod 11, measuring rod one 14 and measuring rod two 15 drive the corresponding measuring slide one 16, measuring slide two 17 and measuring slide three 18 to move, so that the measuring rod 19 on the measuring slide one 16 is against the outermost end of one of the teeth of the gear 7 to be tested, and the measuring rods 19 on the measuring slide two 17 and the measuring slide three 18 are against the two arc surfaces of the same tooth, and the measuring slide two 17 and the measuring slide three 18 are moved by the controller to make the corresponding measuring rod 19 move along the contour line of the corresponding tooth. At the same time, the controller monitors the deformation and vibration parameters of the main measuring rod 11, measuring rod one 14, measuring rod two 15 and multiple measuring rods 19 in real time, and analyzes the angle and displacement of the main measuring rod 11, measuring rod one 14, measuring rod two 15 through the angle measuring sleeve 21, and then analyzes the contour accuracy of the tooth of the gear 7 to be tested.

[0128] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A gear processing precision detection device, characterized in that: The invention comprises a controller and a base (1), wherein the top end of the base (1) is rotatably connected to a rotating bracket (2), the bottom end of the rotating bracket (2) is fixedly connected to a fixing block (3), the bottom end of the base (1) is fixedly connected to a motor 1 (4) and a motor 2 (5), the power shafts of the motor 1 (4) and the motor 2 (5) both pass through the base (1), and a test gear (6) and a gear to be tested (7) are respectively provided on the upper side of the passing part, and the top ends of the power shafts of the motor 1 (4) and the motor 2 (5) are respectively fixedly connected to a bracket 1 (8) and a bracket 2 (9). The top end of the bracket one (8) is rotatably connected to the bottom end of the fixed block (3), the outer end of the bracket two (9) is rotatably connected to a fixed end head (10), the fixed end head (10) is fixedly connected to a main measuring rod (11) at one end away from the bracket two (9), the end of the main measuring rod (11) away from the fixed end head (10) passes through the fixed block (3) and is slidably connected to the fixed block (3), the outer end of the main measuring rod (11) is slidably connected to a slider one (12) and a slider two (13), the slider two (13) is close to the slider One end of the main measuring rod (12) is rotatably connected to a symmetrically arranged measuring rod one (14) and a measuring rod two (15) through a fixed end head (10); the outer ends of the main measuring rod (11), the measuring rod one (14) and the measuring rod two (15) are slidably connected to a measuring slide block one (16), a measuring slide block two (17) and a measuring slide block three (18) respectively; a plurality of driving coils are fixedly connected inside the main measuring rod (11), the measuring rod one (14) and the measuring rod two (15); the measuring slide blocks one (16), the measuring slide block two (17) and the measuring slide block three (18) are fixedly connected inside the main measuring rod (11), the measuring rod one (14) and the measuring rod two (15); A plurality of permanent magnets are fixedly connected in the measuring slider three (18); the bottom ends of the measuring slider one (16), the measuring slider two (17) and the measuring slider three (18) are fixedly connected with measuring rods (19); the main measuring rod (11), the measuring rod one (14) and the measuring rod two (15) are provided with fiber Bragg gratings; the motor one (4), the motor two (5) and the coils in the main measuring rod (11), the measuring rod one (14) and the measuring rod two (15) as well as the plurality of fiber Bragg gratings are electrically connected to a controller.

2. A gear processing precision detection device according to claim 1, characterized in that: The ends of the measuring rod 1 (14) and the measuring rod 2 (15) away from the bracket 2 (9) are both rotatably connected to symmetrically arranged auxiliary rods (20) through fixed ends (10); and the ends of the symmetrically arranged auxiliary rods (20) away from the bracket 2 (9) are both rotatably connected to the slider 1 (12) through fixed ends (10).

3. A gear processing precision detection device according to claim 1, characterized in that: An angle measuring sleeve (21) is fixedly connected to the bottom end of the rotating bracket (2), a measuring slot for measuring angle and position is provided in the angle measuring sleeve (21), and the angle measuring sleeve (21) is electrically connected to a controller.

4. A gear processing precision detection device according to claim 3, characterized in that: The outer ends of the main measuring rod (11), the first measuring rod (14) and the second measuring rod (15) are all slidably connected to the measuring groove of the angle measuring sleeve (21), and a grating ruler for measuring angle change and displacement is arranged in the measuring groove of the angle measuring sleeve (21), and the grating ruler is electrically connected to the controller.

5. The gear processing precision detection device according to claim 1, characterized in that: The cross sections of the main measuring rod (11), measuring rod one (14) and measuring rod two (15) are all square structures, and the diagonal lines connecting the squares in the vertical direction are parallel to the axis of the bracket one (8).

6. The gear processing precision detection device according to claim 1, characterized in that: The measuring rod (19) is a cylindrical structure, and the diameter of the measuring rod (19) is smaller than the distance between the roots of two adjacent teeth on the gear to be tested (7). The outer ends of the test gear (6) and the gear to be tested (7) are meshed with each other.

7. The gear processing precision detection device according to claim 1, characterized in that: The main measuring rod (11), measuring rod one (14), measuring rod two (15) and measuring rod (19) are all made of high-carbon low-alloy tool steel.

8. The gear processing precision detection device according to claim 1, characterized in that: A reduction box is provided between the power shafts of the motor 1 (4) and the motor 2 (5) and the test gear (6) and the gear to be tested (7), and the input shaft of the reduction box is fixedly connected to the corresponding power shafts of the motor 1 (4) and the motor 2 (5), and the output shaft of the reduction box is clamped with the corresponding test gear (6) and the gear to be tested (7).

9. The gear processing precision detection device according to claim 1, characterized in that: The thickness of the test gear (6) along its axial direction is one third of the thickness of the gear to be tested (7) along its axial direction, and the bottom ends of the test gear (6) and the gear to be tested (7) are located in the same plane, and the thickness difference between the test gear (6) and the gear to be tested (7) is used to enable a plurality of measuring rods (19) to slide along the outer end of each tooth of the gear to be tested (7).

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