A measuring system for measuring the angle of adjustment of an eccentric sleeve

Abstract

The application discloses a kind of measurement system for measuring eccentric sleeve adjustment angle, including fiber-optic gyroscope and host computer, fiber-optic gyroscope is used to measure the rotation center line endpoint space position posture of output shaft in gear shaft of target to be measured, host computer includes space precision index calculation module, position deviation calculation module and eccentric sleeve adjustment module, the level of output shaft is calculated according to the angular velocity information measured by fiber-optic gyroscope by space precision index calculation module, the relative position deviation ΔX of gear shaft adjustment side endpoint is calculated according to the level of output shaft by position deviation calculation module, gear shaft adjustment side endpoint is the end of output shaft away from input shaft in gear shaft, eccentric sleeve adjustment angle θ is calculated according to ΔX by eccentric sleeve adjustment module.This application can apply existing fiber-optic gyroscope, can realize the quick measurement of eccentric sleeve adjustment angle, can improve measurement precision and measurement efficiency, more suitable for time is tight, the measurement task of heavy workload.

Description

Technical Field

[0001] This invention relates to the field of mechanical transmission technology, and in particular to a measuring system for measuring the adjustment angle of an eccentric sleeve. Background Technology

[0002] With the improvement of manufacturing capabilities, gearboxes are gradually becoming larger, incorporating eccentric sleeve structures in their design. During the operation of gear reducers, the adjustment of the eccentric sleeve is crucial for ensuring gear transmission efficiency and service life. However, traditional eccentric sleeve adjustment methods often rely on manual measurement and experience, resulting in low accuracy and efficiency. Summary of the Invention

[0003] To address the aforementioned problems, this application provides a measurement system for measuring the adjustment angle of an eccentric sleeve.

[0004] This application provides a measurement system for measuring the adjustment angle of an eccentric sleeve, including a fiber optic gyroscope and a host computer. The fiber optic gyroscope is used to measure the spatial position and attitude of the endpoint of the rotation center line of the output shaft in the gear shaft of the target under test. The host computer includes a spatial accuracy index calculation module, a position deviation calculation module, and an eccentric sleeve adjustment module. The spatial accuracy index calculation module calculates the levelness of the output shaft based on the angular velocity information measured by the fiber optic gyroscope. The position deviation calculation module calculates the relative position deviation ΔX of the adjustment side endpoint of the gear shaft based on the levelness of the output shaft. The adjustment side endpoint of the gear shaft is the end of the output shaft that is far away from the input shaft in the gear shaft. The eccentric sleeve adjustment module calculates the adjustment angle θ of the eccentric sleeve based on ΔX.

[0005] In some implementations, ΔX is the product of the levelness and L, where L is the length of the output shaft.

[0006] In some implementations, the operator performs the adjustment operation of the eccentric sleeve according to θ.

[0007] In some implementations, L is obtained from the output shaft drawing.

[0008] In some implementations, the length L is obtained by measuring the length of the output shaft.

[0009] In some implementations, the fiber optic gyroscope is mounted directly on the surface of the output shaft.

[0010] In some implementations, in the eccentric sleeve adjustment module, the eccentric sleeve adjustment angle θ is calculated according to the formula θ={arccos[(R-ΔX) / ΔX]} / π, where R is the standard eccentric dimension of the eccentric sleeve.

[0011] In some implementations, a data table is established that corresponds one-to-one with ΔX and θ.

[0012] In some implementations, the target to be tested includes a gear reducer.

[0013] In some implementations, the host computer is connected to the fiber optic gyroscope signal.

[0014] The beneficial effects of this application are as follows: It provides a measurement system for measuring the adjustment angle of an eccentric sleeve, introducing a fiber optic gyroscope into the process of measuring the adjustment angle of the eccentric sleeve. The fiber optic gyroscope measures the spatial position and attitude of the endpoint of the rotation center line of the output shaft in the gear shaft of the target object. The fiber optic gyroscope collects angular velocity information, and the host computer converts the collected data into the adjustment angle of the eccentric sleeve. This involves three modules: a spatial accuracy index calculation module, a position deviation calculation module, and an eccentric sleeve adjustment module. The spatial accuracy index calculation module calculates the levelness of the output shaft based on the angular velocity information measured by the fiber optic gyroscope. The position deviation calculation module calculates the levelness of the output shaft based on the output... The horizontality of the shaft is calculated to obtain the relative position deviation ΔX of the gear shaft adjustment side endpoint. The gear shaft adjustment side endpoint is the end of the output shaft that is far from the input shaft in the gear shaft. The eccentric sleeve adjustment module calculates the eccentric sleeve adjustment angle θ based on ΔX. Using the solution of this application, the operator only needs to perform manual operation of repeatedly sliding the fiber optic gyroscope on the output shaft. Compared with the transmission solution, the amount of manual operation is significantly reduced, and the error caused by experience judgment in the transmission solution is avoided. This application can use existing fiber optic gyroscopes, which can realize the rapid measurement of the eccentric sleeve adjustment angle, improve the measurement accuracy and measurement efficiency, and is more suitable for measurement tasks with tight time and large workload. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention.

[0016] Figure 1 This is a schematic diagram showing the relative distribution of the output axis of the fiber optic gyroscope and the target under test in a measurement system for measuring the adjustment angle of an eccentric sleeve provided in this application.

[0017] Figure label: 110 - output axis, 120 - input axis, 200 - fiber optic gyroscope. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0019] Furthermore, reference numerals and / or reference letters may be repeated in different examples in this application. Such repetition is for simplification and clarity purposes and does not in itself indicate a relationship between the various embodiments and / or settings discussed. In addition, this application provides examples of various specific processes and materials; however, those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0020] With the improvement of manufacturing level, gearboxes are gradually developing towards larger sizes. Due to the high hardness of the tooth surface, hardened tooth surface gears are almost wear-free. The contact state of the tooth surface mainly depends on the machining accuracy of the gearbox housing and gear components, as well as the assembly accuracy of the gearbox. Therefore, an eccentric sleeve structure is added to the design of the gearbox. By adjusting the eccentricity between the bearing housing hole and the outer ring of the bearing, the machining errors of the gearbox housing and gear components are compensated, thereby improving the assembly accuracy of the gearbox.

[0021] Traditionally, the contact state of gears is adjusted by pressing lead wire and coloring it. During the adjustment process, the thickness and thinness of the eccentric sleeve are adjusted horizontally to change the center distance (tooth tip clearance) between the two transmission shafts and the contact pattern in the tooth height direction; the thickness and thinness of the eccentric sleeve are adjusted vertically to change the tooth flank clearance and the contact pattern in the tooth length direction. While adjusting, a micrometer is used to measure the pressed lead wire and observe the tooth surface coloring to ensure that the tooth surface contact accuracy meets the technical requirements.

[0022] The adjustment of eccentric sleeves is crucial for ensuring gear transmission efficiency and service life. However, traditional eccentric sleeve adjustment methods often rely on manual measurement and experience-based judgment, which suffers from low accuracy and inefficiency.

[0023] When adjusting gear contact conditions using the traditional methods described above, the adjustment accuracy of the eccentric sleeve relies heavily on the operator's experience, making consistency difficult to guarantee. Since the assessment of tooth surface contact spots and clearances depends heavily on manual visual inspection of color marks and wire indentations, different operators have subjective differences in their judgment of color distribution and indentation severity, easily leading to inconsistent adjustment conclusions. Especially in the assembly of reducers with high-volume or high-precision requirements, this subjectivity directly affects the contact quality and lifespan of the gear pair.

[0024] The traditional method described above for adjusting gear contact is cumbersome, time-consuming, and inefficient. This method requires repeated adjustments to the eccentric sleeve's position, involving pressing lead wire, applying color, rotating the gear, observing the marks, and measuring data each time. The entire process involves many steps and is lengthy. Especially when the center distance and tooth flank clearance need to be adjusted simultaneously, multiple iterations are often required to achieve the desired result, severely impacting assembly efficiency and making it unsuitable for modern mass production.

[0025] Furthermore, the traditional method used to adjust gear contact conditions is susceptible to interference in the judgment of wire indentations and coloring marks, resulting in limited accuracy of the adjustment results. Factors such as uneven wire hardness, inconsistent thickness of coloring agent, and the cleanliness of the gear surface can all affect the measurement of indentations and the display of contact spots, potentially leading to misjudgments. Moreover, the wire itself is easily deformable, and operational errors can occur during measurement, making it difficult to accurately reflect the uniformity of the tooth gap and the actual distribution of the contact area.

[0026] Another method for adjusting gear contact is to measure and calculate the eccentric sleeve adjustment rotation angle. This involves the following steps: using a laser interferometer, obtain the two endpoints of the rotation center line of a gear shaft in three-dimensional space, and establish a three-dimensional coordinate system using these endpoints as reference points; using the laser interferometer, obtain the coordinate values ​​of the two endpoints of the rotation center lines of other gear shafts in the reducer; combining this with the standard ideal spacing of the reducer gear shafts, calculate the relative position deviation of the gear shaft adjustment side endpoints; based on the working principle and standard eccentric dimensions of the eccentric sleeve, obtain the eccentric sleeve adjustment rotation angle through formula conversion.

[0027] However, the aforementioned method of measuring and calculating angles is complex and requires highly skilled personnel. The complete process involves multiple technical steps, including establishing a coordinate system, precise aiming, multi-point measurement, and data processing. Operators not only need to be proficient in operating precision instruments but also possess a certain understanding of spatial geometry and coordinate system transformations to correctly establish a benchmark and obtain valid axis endpoint coordinates. This makes the professional skill requirements for this method far higher than traditional methods, significantly increasing training costs and operational difficulty.

[0028] The measurement efficiency of the aforementioned angle calculation method is limited by the point aiming and acquisition process. Although this method avoids repeated trial and error, obtaining the precise coordinates of the two ends of each shaft is a relatively time-consuming process. It requires fine-tuning the laser beam's aiming path to ensure accurate targeting of the measurement point and multiple measurements to average the error. For reducers with complex structures and numerous shafts, measuring all shafts one by one consumes a significant amount of time, and its efficiency advantage may be negated in multi-point measurement scenarios.

[0029] To address the aforementioned issues, this application provides a measurement system for measuring the adjustment angle of an eccentric sleeve, comprising a fiber optic gyroscope 200 and a host computer. The fiber optic gyroscope 200 measures the spatial position and attitude of the endpoint of the rotation center line of the output shaft 110 in the gear shaft of the target under test. Based on the angular velocity information measured by the fiber optic gyroscope 200, the host computer calculates the adjustment angle of the eccentric sleeve. The operator then performs the adjustment operation of the eccentric sleeve according to the adjustment angle.

[0030] Based on the above description of the technical problem of adjusting the gear contact state in a gearbox, the target to be tested in this application is specifically a gear reducer. The gear reducer has at least one input shaft 120 and one output shaft 110, as detailed in [reference needed]. Figure 1 The figure shown.

[0031] The main unit includes a spatial accuracy index calculation module, a position deviation calculation module, and an eccentric sleeve adjustment module. The spatial accuracy index calculation module calculates the levelness of the output shaft 110 based on the angular velocity information measured by the fiber optic gyroscope 200. The position deviation calculation module calculates the relative position deviation ΔX of the gear shaft adjustment side endpoint based on the levelness of the output shaft 110. The gear shaft adjustment side endpoint is the end of the output shaft 110 that is far away from the input shaft 120 in the gear shaft. The eccentric sleeve adjustment module calculates the eccentric sleeve adjustment angle θ based on ΔX.

[0032] This application uses the input shaft 120 as the reference shaft, calculates the adjustment angle of the eccentric sleeve, and adjusts the eccentric sleeve into place in one go, so that the output shaft 110 is adapted to the input shaft 120, thereby improving the assembly accuracy of the gearbox. For details, see... Figure 1 As shown, the fiber optic gyroscope 200 is placed firmly against the surface of the output shaft 110, allowing it to repeatedly slide along the roller surface within a rated angle range. The operator holds the fiber optic gyroscope 200, placing it horizontally against the surface of the output shaft 110. The first measured plane is set as the initial plane, and then the gyroscope is repeatedly slid along a certain angle range on one side of the output shaft 110 to obtain one set of data.

[0033] The spatial accuracy index calculation module calculates the levelness of the output axis 110 based on the angular velocity information measured by the fiber optic gyroscope 200. Accordingly, the host is connected to the fiber optic gyroscope 200. Specifically, this involves the process of converting the angular velocity information collected by the fiber optic gyroscope into levelness information. This process can refer to the processing and expression methods in related technologies, involving several main steps such as integrating the angular velocity over time, defining the rotation matrix, deriving the plane equation, and calculating the parallelism. Among them, the y-axis in the coordinate system is established with the central axis of the input axis 120. When deriving the plane equation, the intersection vector is obtained. The parallelism is defined as the angular deviation between the projection of the intersection vector on the horizontal plane and the y-axis, which is converted into the deviation per meter of length, with the unit being mm / m.

[0034] After the spatial accuracy calculation module obtains reliable levelness data, based on the levelness data of the output shaft 110, the position deviation calculation module calculates the relative position deviation ΔX of the gear shaft adjustment end point. The gear shaft adjustment end point is the end of the output shaft 110 furthest from the input shaft 120 within the gear shaft. Optionally, ΔX is calculated according to the formula: ΔX = levelness. L is calculated as the length of the output shaft 110. The value of L can be obtained from the design drawings of the output shaft 110, or by measuring the length of the output shaft 110 on site. In this case, the product of the levelness and L is ΔX.

[0035] After obtaining ΔX, the eccentric sleeve adjustment module calculates the eccentric sleeve adjustment angle θ based on ΔX, specifically involving the formula θ=;arccos[(R-ΔX) / ΔX]= / π, where R is the standard eccentric dimension of the eccentric sleeve. The eccentric sleeve adjustment angle θ is successfully calculated using this formula.

[0036] For a specific model of gearbox, by adjusting the eccentric sleeve of its gear reducer, the one-to-one correspondence between ΔX and θ can be determined. Therefore, a data table showing the one-to-one correspondence between ΔX and θ can be established. Based on the calculation results of the position deviation calculation module, the data of θ can be directly checked through this data table.

[0037] In summary, the measurement system for measuring the adjustment angle of the eccentric sleeve provided in this application involves introducing a fiber optic gyroscope 200 into the process of measuring the adjustment angle of the eccentric sleeve. The fiber optic gyroscope 200 measures the spatial position and attitude of the endpoint of the rotation center line of the output shaft 110 in the gear shaft of the target under test. The fiber optic gyroscope 200 collects angular velocity information. The host computer converts the collected data of the fiber optic gyroscope 200 into the adjustment angle of the eccentric sleeve. This involves three modules: a spatial accuracy index calculation module, a position deviation calculation module, and an eccentric sleeve adjustment module. The spatial accuracy index calculation module calculates the levelness of the output shaft 110 based on the angular velocity information measured by the fiber optic gyroscope 200. The position deviation calculation module calculates the relative position deviation ΔX of the gear shaft adjustment side endpoint based on the levelness of the output shaft 110. The gear shaft adjustment side endpoint is the end of the output shaft 110 that is far away from the input shaft 120 in the gear shaft. The eccentric sleeve adjustment module calculates the adjustment angle θ of the eccentric sleeve based on ΔX.

[0038] By applying the solution of this application, the operator only needs to manually operate the fiber optic gyroscope 200 to slide repeatedly on the output shaft 110, which significantly reduces the amount of manual operation compared with the transmission solution and avoids the error caused by experience judgment in the transmission solution.

[0039] This application can utilize the existing fiber optic gyroscope 200 and can be applied to various types of gear reducers. It can achieve rapid measurement of the adjustment angle of the eccentric sleeve, improve measurement accuracy and efficiency, and is more suitable for measurement tasks with tight time and large workload.

[0040] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0042] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A measuring system for measuring the adjustment angle of an eccentric sleeve, characterized in that, The system includes a fiber optic gyroscope and a main unit. The fiber optic gyroscope is used to measure the spatial position and attitude of the endpoint of the rotation center line of the output shaft in the gear shaft of the target under test. The main unit includes: The spatial accuracy index calculation module calculates the levelness of the output axis based on the angular velocity information measured by the fiber optic gyroscope. The position deviation calculation module calculates the relative position deviation ΔX of the gear shaft adjustment end point based on the levelness of the output shaft, where the gear shaft adjustment end point is the end of the output shaft furthest from the input shaft in the gear shaft; and The eccentric sleeve adjustment module calculates the eccentric sleeve adjustment angle θ based on ΔX.

2. The measuring system for measuring the adjustment angle of the eccentric sleeve as described in claim 1, characterized in that, ΔX is the product of the levelness and L, where L is the length of the output shaft.

3. The measuring system for measuring the adjustment angle of the eccentric sleeve as described in claim 1, characterized in that, The operator performs the adjustment operation of the eccentric sleeve according to θ.

4. The measuring system for measuring the adjustment angle of the eccentric sleeve as described in claim 2, characterized in that, L is obtained from the drawing of the output shaft.

5. The measuring system for measuring the adjustment angle of the eccentric sleeve as described in claim 2, characterized in that, The length L is obtained by measuring the length of the output shaft.

6. The measuring system for measuring the adjustment angle of the eccentric sleeve as described in claim 1, characterized in that, The fiber optic gyroscope is attached to the surface of the output shaft.

7. The measuring system for measuring the adjustment angle of the eccentric sleeve as described in any one of claims 1-6, characterized in that, In the eccentric sleeve adjustment module, the eccentric sleeve adjustment angle θ is calculated according to the formula θ={arccos[(R-ΔX) / ΔX]} / π, where R is the standard eccentric dimension of the eccentric sleeve.

8. The measuring system for measuring the adjustment angle of the eccentric sleeve as described in claim 7, characterized in that, Establish a data table with a one-to-one correspondence between ΔX and θ.

9. The measuring system for measuring the adjustment angle of the eccentric sleeve as described in claim 1, characterized in that, The target to be tested includes a gear reducer.

10. The measuring system for measuring the adjustment angle of the eccentric sleeve as described in claim 1, characterized in that, The host computer is connected to the fiber optic gyroscope via signal transmission.

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