Method for measuring the half-axis dimension of a three-wave generator

Abstract

This application provides a method for measuring the half-shaft dimensions of a three-wave generator, relating to the field of harmonic drive technology. The method includes: providing a support structure having at least two positioning surfaces forming a preset angle; placing the three-wave generator on the support structure and adjusting its orientation so that the two long / short half-shafts of the generator form a preset orientation relationship with the two positioning surfaces; measuring the linear distance between a reference point on the three-wave generator and a reference point on the support structure; and calculating the long and short half-shaft dimensions of the three-wave generator based on the linear distance, the preset angle, and known geometric parameters of the three-wave generator. Thus, this method allows for rapid positioning of the three-wave generator through the geometric constraints of the support structure and indirectly calculates the dimensions of individual half-shafts using simple linear distance measurement, thereby balancing measurement efficiency and accuracy.

Description

Technical Field

[0001] This application relates to the field of harmonic drive technology, specifically to a method for measuring the half-shaft dimension of a three-wave generator. Background Technology

[0002] Three-wave harmonic reducers are widely used due to their excellent transmission accuracy and stable performance. However, the wave generator of a three-wave harmonic reducer has three long half-shafts and three short half-shafts. Measuring the dimensions of the long and short half-shafts is not as convenient and quick as with conventional harmonic reducers, which directly affects the performance evaluation and production quality control of harmonic reducers.

[0003] In related technologies, two methods are typically used to measure the dimensions of parts with periodic non-circular contours: one is to use contact measuring tools such as dial indicators for direct measurement. However, this method usually only obtains the overall dimension between two relative points on the contour in a single measurement, and cannot separate multiple independent contour feature dimensions, resulting in the measurement results not reflecting the specific values ​​of the major or minor semi-axis. The other method is to use high-precision contour scanning equipment to obtain complete contour point cloud data, and then calculate the required dimensions. Although this method can theoretically obtain accurate results, the measurement process is time-consuming and the data processing is complex, making it difficult to meet the efficiency requirements of rapid inspection of batch products in production sites.

[0004] Therefore, existing measurement methods face a significant technical dilemma when dealing with the dimensional inspection of multi-feature contour parts such as three-wave generators: either sacrificing the independence and accuracy of measurement results for speed, or incurring extremely high time costs to obtain accurate dimensions. This makes it difficult to achieve both high efficiency and high precision in obtaining the dimensions of each independent contour feature in a single measurement operation in a mass production environment. With the expanding application of harmonic reducers, especially three-wave reducers, it is particularly necessary to develop a new measurement scheme that can overcome the above contradictions. Summary of the Invention

[0005] In view of this, this application provides a method for measuring the half-shaft dimension of a three-wave generator, in order to solve the problem of how to balance measurement efficiency and accuracy in the measurement operation of the long and short half-shaft dimensions of a three-wave generator in the prior art.

[0006] To achieve the above objectives, this application provides the following technical solution: A method for measuring the half-shaft dimension of a three-wave generator, comprising: A support structure is provided, the support structure having at least two positioning surfaces forming a preset angle; Place the three-wave generator on the support structure and adjust the orientation of the three-wave generator so that the two long half-axis / short half-axis of the three-wave generator form a preset orientation relationship with the two positioning surfaces; Measure the linear distance between the reference point on the three-wave generator and the reference point on the support structure; Based on the linear distance, the preset angle, and the known geometric parameters of the three-wave generator, the major and minor semi-axis dimensions of the three-wave generator are calculated.

[0007] Optionally, the support structure is a support block with a placement groove, and the two positioning surfaces are two oppositely arranged inclined surfaces of the placement groove.

[0008] Optionally, the preset included angle between the two inclined planes is 60°, and the included angle between the two inclined planes and the top edge of the support block is 120°.

[0009] Optionally, the two inclined planes are symmetrical about the vertical plane.

[0010] Optionally, the key positioning dimensions of the support block are set to be proportional to a predetermined fixed multiple of the base circle radius of the three-wave generator.

[0011] Optionally, the height of the support block is set to 3 times the radius of the base circle; The distance from the virtual intersection of the two positioning surfaces to the bottom edge of the support block is set to 0.5 times the radius of the base circle; The distance from the virtual intersection of the two positioning surfaces to the side of the support block is set to twice the radius of the base circle; The width of the support block is set to 4 times the radius of the base circle.

[0012] Optionally, adjusting the orientation of the three-wave generator so that its major and minor semi-axises form a preset orientation relationship with the two positioning surfaces includes: Adjust the orientation of the three-wave generator so that its two major semi-axis are perpendicular to the two inclined planes.

[0013] Optionally, the reference point on the three-wave generator is the top vertex of the three-wave generator, and the reference point on the support structure is the top edge of the support block; In the step of calculating the major and minor semi-axis dimensions of the three-wave generator based on the linear distance, the preset angle, and the known geometric parameters of the three-wave generator, the known geometric parameters include the base circle radius e; The calculation of the major semi-axis dimension of the three-wave generator is based on the following formula: , Where a is the major semi-axis dimension and L is the measured linear distance.

[0014] Optionally, adjusting the orientation of the three-wave generator so that its major and minor semi-axises form a preset orientation relationship with the two positioning surfaces includes: Adjust the orientation of the three-wave generator so that its two short semi-axis are perpendicular to the two inclined planes.

[0015] Optionally, the reference point on the three-wave generator is the top vertex of the three-wave generator, and the reference point on the support structure is the top edge of the support block; In the step of calculating the major and minor semi-axis dimensions of the three-wave generator based on the linear distance, the preset angle, and the known geometric parameters of the three-wave generator, the known geometric parameters include the base circle radius e; The calculation of the minor semi-axis dimension of the three-wave generator is based on the following formula: , Where b is the minor semi-axis dimension and M is the measured linear distance.

[0016] The method for measuring the semi-axis dimensions of a three-wave generator provided in this application includes: providing a support structure having at least two positioning surfaces forming a preset angle; placing the three-wave generator on the support structure and adjusting the orientation of the three-wave generator so that the two major semi-axis / minor semi-axis of the three-wave generator form a preset orientation relationship with the two positioning surfaces; measuring the linear distance between a reference point on the three-wave generator and a reference point on the support structure; and calculating the major and minor semi-axis dimensions of the three-wave generator based on the linear distance, the preset angle, and the known geometric parameters of the three-wave generator. This setup, using a support structure with a specific preset angle to constrain the three-wave generator, ensures that its major or minor semi-axis forms a preset orientation relationship with the positioning surface, and measures the linear distance between individual reference points. This scheme utilizes the support structure to force the measured part to reach a definite and repeatable positioning state, thereby establishing a definite mathematical relationship between the measured single distance value and the multiple semi-axis dimensions to be determined through the preset angle and known geometric parameters. Thus, with only one measurement operation, the dimensions of both the major and minor semi-axis can be calculated simultaneously based on this geometric relationship, effectively improving measurement efficiency and avoiding errors introduced by multiple positioning or inconsistent measurement benchmarks, thus enhancing the accuracy and consistency of the measurement results. The method provided in this application utilizes the geometric constraints of the support structure to achieve rapid positioning of the wave generator and replaces complex direct dimension measurement or full contour scanning with simple linear distance measurement. Therefore, without complex equipment and lengthy processes, it can quickly and indirectly calculate the specific dimensions of a single major or minor semi-axis, effectively balancing measurement efficiency and accuracy. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0018] Figure 1 This is a schematic diagram showing the positional relationship between the three-wave generator and the support block provided in an embodiment of this application.

[0019] Figure 2 A schematic diagram showing the measurement status of the long half-axis dimension of the three-wave generator provided in the embodiments of this application.

[0020] exist Figures 1-2 middle: 10. Support block; 20. Three-wave generator; 101. Placement slot; 102. Inclined surface. Detailed Implementation

[0021] 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 some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] Through in-depth analysis, the applicant discovered that related technologies for measuring the semi-axis dimensions of three-wave generators primarily focus on the direct acquisition of the outer contour. There is a lack of a stable and clear correspondence between the measurement benchmark and the individual semi-axis geometric features that the three-wave generator actually needs to identify. On one hand, the three long semi-axis and three short semi-axis of the three-wave generator are circumferentially spaced. Simply relying on outer diameter or overall dimension measurements yields a result that is essentially a composite quantity projected from multiple features, making it difficult to separate individual semi-axis parameters. On the other hand, attempting to recover the individual semi-axis dimensions by increasing contour sampling points becomes highly dependent on the sampling process, data processing, and equipment resource investment, leading to a longer detection path and more measurement steps.

[0023] Based on the above, this application proposes a different technical approach. This application employs a support structure with a positioning surface having a preset angle to geometrically constrain the circumferential orientation of the three-wave generator. It uses the linear distance between the reference point of the three-wave generator and the reference point of the support structure as an intermediate measurement quantity, thus improving the measurement process that originally relied on direct outer contour reading. This transforms the acquisition of a single half-axis dimension into a calculable geometric relationship solution without introducing a complex contour scanning process. This approach retains the simplicity of linear measurement operations while avoiding the problem that the overall dimension cannot correspond to a single half-axis.

[0024] The following section, in conjunction with the accompanying drawings, provides a detailed description of a specific implementation method for measuring the half-axis dimension of a three-wave generator. The embodiments described herein illustrate the structural basis of this method, the establishment of the measurement reference, and the calculation process for deriving the half-axis dimension from linear distance. It should be noted that the illustrated embodiments do not limit the scope of this method; without departing from the basic concept of this method, equivalent substitutions made to the form of the supporting structure, the type of measuring tool, the method of selecting reference points, and the organization of calculation parameters can all achieve the same or similar measurement results.

[0025] like Figures 1-2As shown, this application embodiment provides a method for measuring the half-shaft dimension of a three-wave generator, using a three-wave generator 20 as the measurement object. The three-wave generator 20 is used in a three-wave harmonic reducer, and its overall structure includes a flexible bearing and a three-wave cam disposed inside the flexible bearing. For ease of description, the geometric parameters of the three-wave generator 20 are recorded as the base circle radius e, the long half-shaft dimension a, and the short half-shaft dimension b, where the base circle radius e is a known geometric parameter, generally given by the design drawing and recorded as a constant; the long half-shaft dimension a and the short half-shaft dimension b are parameters to be measured. The three-wave structure causes the long half-shaft direction and the short half-shaft direction to be periodically distributed in the circumferential direction, with a spacing angle of 120° between the three long half-shafts and a spacing angle of 120° between the three short half-shafts. This circumferentially evenly spaced feature provides the geometric basis for the orientation locking using the included angle positioning surface in this embodiment.

[0026] In a basic embodiment, the method for measuring the semi-axis dimensions of a three-wave generator includes: providing a support structure having at least two positioning surfaces forming a preset angle; placing a three-wave generator 20 on the support structure and adjusting the orientation of the three-wave generator 20 so that the two major semi-axis / minor semi-axis of the three-wave generator 20 form a preset orientation relationship with the two positioning surfaces; measuring the linear distance between a reference point on the three-wave generator 20 and a reference point on the support structure; and calculating the major and minor semi-axis dimensions of the three-wave generator 20 based on the linear distance, the preset angle, and the known geometric parameters of the three-wave generator 20.

[0027] This configuration, using a support structure with a specific preset angle to constrain the three-wave generator 20, ensures that its major or minor semi-axis forms a preset orientation relationship with the positioning surface, and measures the linear distance between individual reference points. This scheme utilizes the support structure to force the measured part to reach a definite and repeatable positioning state, thereby establishing a definite mathematical relationship between the measured single distance value and the multiple semi-axis dimensions to be determined through the preset angle and known geometric parameters. Thus, with only one measurement operation, the dimensions of both the major and minor semi-axis can be calculated simultaneously based on this geometric relationship, effectively improving measurement efficiency and avoiding errors introduced by multiple positioning or inconsistent measurement benchmarks, thus enhancing the accuracy and consistency of the measurement results. The method provided in this application utilizes the geometric constraints of the support structure to achieve rapid positioning of the wave generator and replaces complex direct dimension measurement or full contour scanning with simple linear distance measurement. Therefore, without complex equipment and lengthy processes, it can quickly and indirectly calculate the specific dimensions of a single major or minor semi-axis, effectively balancing measurement efficiency and accuracy.

[0028] Regarding adjusting the orientation of the three-wave generator 20, its circumferential orientation can be adjusted manually or with auxiliary tooling until a preset and definite orientation relationship is achieved.

[0029] To make it easy to understand, the support structure has at least two positioning surfaces, which form a preset angle. The function of the support structure is to form a geometric constraint on the circumference of the three-wave generator 20 with the two positioning surfaces, so that the axial direction of the three-wave generator 20 is horizontal. Thus, under the action of gravity, the support structure provides stable support for the three-wave generator 20, thereby quickly establishing a repeatable measurement orientation.

[0030] In some specific embodiments, the support structure is a support block 10 with a placement groove 101, and the two positioning surfaces are two inclined surfaces 102 opposite to each other in the placement groove 101. The two inclined surfaces 102 form surface contact or approximately line contact with the outer surface of the three-wave generator 20. The bottom of the support block 10 forms a bottom edge, and the top forms a top edge, which is used as one of the structural reference points for linear distance measurement. The placement groove 101 can be a placement groove 101 where the two inclined surfaces 102 intersect at the bottom, or it can be a trapezoidal groove where the two inclined surfaces 102 do not intersect. Because the support structure designed in this way is simple in structure and has no complex features, its influence on measurement errors can be minimized.

[0031] In some specific embodiments, the preset included angle is set to 60°, that is, the included angle between the two inclined planes 102 is 60°. Simultaneously, the included angles between the two inclined planes 102 and the top edge of the support block 10 are set to 120°. That is, the preset included angle is complementary to the included angle between the two adjacent major semi-axises of the three-wave generator 20. The preset included angle is... Figure 2 It is represented as θ.

[0032] When the placement groove 101 is a V-shaped groove, its cross-section can be considered as an open equilateral triangle, with the two inclined planes 102 symmetrically distributed within the cross-section. The reason for selecting a preset included angle of 60° is that the three major semi-axis (or three minor semi-axis) of the three-wave generator 20 are equally divided into 120° sections circumferentially. When the two inclined planes 102 are symmetrically arranged within the cross-section with an included angle of 60°, after the three-wave generator 20 is adjusted to a specific orientation within the placement groove 101, the directions of the two semi-axis to be aligned correspond to the normals of the two inclined planes 102, thus achieving unique positioning using the two inclined planes 102 as orientation references. This angle matching simplifies the geometric projection relationship during subsequent trigonometric relationship derivation, allowing the calculation formula to be organized into a linear form, thereby transforming the complex solution of curved shape dimensions into the measurement and substitution calculation of a single linear distance.

[0033] Furthermore, in some preferred embodiments, the two inclined planes 102 are symmetrical about the vertical plane. The vertical plane can be defined as a plane passing through the line of symmetry of the bottom of the placement slot 101 and perpendicular to the bottom edge of the support block 10. The symmetry of the two inclined planes 102 about the vertical plane means that when the three-wave generator 20 is placed in the placement slot 101, the force on it tends to be balanced in the left and right directions, and the distribution of contact pressure on the two inclined planes 102 is closer to a symmetrical state, thereby reducing the posture deviation caused by the processing error or placement eccentricity of the support block 10. Moreover, the symmetrical configuration of the support structure makes the reference consistency when measuring the vertex height stronger. When the operator changes the measurement object or repeatedly places the same object, the geometric center line of the three-wave generator 20 is more likely to be aligned with the vertical plane, thus improving the repeatability of the measurement results.

[0034] In some preferred embodiments, several key positioning dimensions of the support structure are set to a predetermined fixed proportional relationship with the base circle radius e of the three-wave generator 20. This fixed proportional relationship is used to parameterize the key geometric dimensions of the support block 10, ensuring that even when the specifications of the measured three-wave generator 20 change, but the base circle radius e can be used as a uniform dimensional parameter, the support block 10 can still be scaled up or down proportionally while maintaining the same geometric constraints, thus keeping the calculation formula unchanged under the same derivation logic. This parameterized design reduces the repetitive workload in designing measurement fixtures for different specifications of wave generators, providing a basis for the serialization and standardization of the measurement method.

[0035] Further, in some optional embodiments, the height H of the support block 10 is set to 3 times the base circle radius; the distance h1 from the virtual intersection P of the two positioning surfaces to the bottom edge of the support block 10 is set to 0.5 times the base circle radius; the distance h2 from the virtual intersection P of the two positioning surfaces to the side edge of the support block 10 is set to 2 times the base circle radius; and the width W of the support block 10 is set to 4 times the base circle radius. That is, H equals 3e, h1 equals 0.5e, h2 equals 2e, and W equals 4e. The width direction of the support block 10 is consistent with the width direction of the placement groove 101. Here, the virtual intersection P is the intersection of the extension lines of the two inclined surfaces 102 in the cross section; this intersection may not exist during actual processing. After setting H, h1, h2, and W according to the aforementioned multiples, a fixed relative height relationship is formed between the top edge of the support block 10, the virtual intersection point P, and the bottom edge. This ensures that when the three-wave generator 20 contacts the two inclined planes 102 in a specific orientation, the spatial height of its top vertex can be mapped to the semi-axis dimension through a simple vertical distance measurement. The combination of the aforementioned multiples is not arbitrary; its goal is to ensure a linear relationship between the semi-axis dimension and the measurement distance in the final calculation formula.

[0036] The following describes an operational implementation method in conjunction with the measurement process of the major semi-axis dimension 'a'. The support block 10 is placed on a horizontal platform. The three-wave generator 20 is gently placed into the placement slot 101, so that its outer circumferential surface contacts the two inclined planes 102. Then, an orientation adjustment step is performed: the orientation of the three-wave generator 20 is adjusted so that its two major semi-axis are perpendicular to the two inclined planes 102 respectively. This adjustment can be achieved by slightly rotating the three-wave generator 20. When the wave generator rotates to the target orientation, the directions of its corresponding two major semi-axis are consistent with the normal directions of the two inclined planes 102. Therefore, at this orientation, the normal reaction force at the contact point between the three-wave generator 20 and the inclined planes 102 has a stabilizing constraint effect on the rotation, and the wave generator is unlikely to deviate from this posture on its own when there is no external disturbance. As an optional approach, to improve consistency, orientation marks can be pre-set on the three-wave generator 20, for example, marking lines corresponding to the long half-axis can be engraved on the end face of the three-wave cam; the operator can quickly position the device by combining the alignment of the marking lines with the vertical symmetrical surface of the support block 10.

[0037] In the semi-major axis measurement state, the reference point on the three-wave generator 20 is defined as the top vertex. The top vertex is the highest point of the outer contour of the wave generator in the vertical direction, and in the orientation where the semi-major axis is perpendicular to the inclined plane 102, this top vertex corresponds to one semi-major axis direction. The reference point on the support structure is defined as the top edge of the support block 10. The linear distance L between the top vertex and the top edge of the support block 10 is measured. The linear distance L is measured in the vertical direction and can be achieved using conventional tools such as a height gauge.

[0038] Given the above geometric and dimensional settings, L + 3e = 3a + 0.5e, therefore the semi-major axis dimension 'a' is calculated based on the following formula: .

[0039] Where e is the known base circle radius, and L is the measured linear distance from the top vertex Q to the top edge of the support block 10. This formula is based on setting the key dimensions of the support block 10 proportionally to e, and the triangular projection relationship formed by matching the included angle of the placement slot 101 with the interval angle of the three-wave structure. Therefore, the operator does not need to perform a contour scan of the wave generator's shape, nor does they need to directly search for difficult-to-reproduce measurement points on the curved surface; the single major semi-axis dimension a can be obtained through only one linear distance measurement and one substitution calculation. Since the measurement direction of L is vertical, and the reference points are all reproducible geometric edges or vertices, the measurement chain is shorter, reducing the sources of accumulated error, thus improving efficiency while maintaining consistency of results.

[0040] The following describes another operational implementation method in conjunction with the measurement process of the short semi-axis dimension b. The arrangement of the support block 10 and the measurement platform is the same as described above. After placing the three-wave generator 20 into the placement slot 101, another orientation adjustment step is performed: the orientation of the three-wave generator 20 is adjusted so that its two short semi-axis are perpendicular to the two inclined planes 102 respectively. Compared with the orientation of the long semi-axis measurement, this orientation rotates the wave generator around its own axis by an equivalent angle of 60°, so that the orientation of the semi-axis corresponding to the normal of the two inclined planes 102 switches from the long semi-axis to the short semi-axis. Since the included angle of the placement slot 101 matches the circumferential distribution of the three-wave structure, the three-wave generator 20 also forms a stable state under this orientation of the short semi-axis measurement.

[0041] In the short semi-axis measurement state, the reference point on the three-wave generator 20 is still defined as the top vertex, and the top edge of the support block 10 is defined as the reference point of the support structure. The linear distance M from the top vertex to the top edge is measured in the same way as the long semi-axis measurement. Due to the change in orientation, the highest point of the shape corresponding to the top vertex is determined by the direction of the short semi-axis. To ensure consistent vertex identification, before the altimeter measurement, the highest reading position can be found by lightly scanning along the shape of the three-wave generator 20, and the probe position is locked and the value is read when the maximum value is reached. This operation ensures that the reference point is determined by the highest point defined by surveying, avoiding deviations caused by relying on visual judgment of the point position.

[0042] Under the above measurement orientation of the short semi-axis and the same support block 10 dimension system, M+3e=3b+0.5e, therefore the dimension b of the short semi-axis is calculated based on the following formula: .

[0043] Where e is the known base circle radius, and M is the measured linear distance from the top vertex to the top edge of the support block 10. Due to the parametric dimensions and angle design of the support block 10, the geometric relationship remains isomorphic for the measurement of the major and minor semi-axis. Therefore, the dimension of the minor semi-axis can also be calculated using a linear formula of the same form as that for the major semi-axis. Thus, with the same support structure and the same measuring tools, the major semi-axis a and the minor semi-axis b can be obtained separately by simply changing the orientation of the wave generator, improving the reusability of the measuring fixture.

[0044] Of course, in some possible embodiments, the preset included angle θ is not limited to the value of 60°. Provided that the circumferential half-axis distribution law of the three-wave generator 20 is satisfied and the calculation model can be established, θ can be selected within a certain range, and different forms of calculation formulas can be obtained through corresponding geometric derivations. For example, when θ deviates from 60°, the key dimension multiples of the support block 10 can be changed so that the dimension of the half-axis to be determined can still be solvable with the measured distances L and M. Correspondingly, if the height H of the support block 10, the distances h1 and h2 from the virtual intersection point P to each side, and the position of the top edge are adjusted, the constant terms and coefficients in the calculation formula will change accordingly. This adjustability makes this method applicable not only to three-wave generators 20 of specific specifications but also extendable to other wave generator shape measurement scenarios with similar trisection circumferential characteristics.

[0045] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0046] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0047] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0048] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0049] It should be understood that the qualifiers “first,” “second,” “third,” “fourth,” “fifth,” and “sixth” used in the description of the embodiments of this application are only used to more clearly illustrate the technical solutions and are not intended to limit the scope of protection of this application.

[0050] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A method for measuring the half-shaft dimension of a three-wave generator, characterized in that, include: A support structure is provided, the support structure having at least two positioning surfaces, the two positioning surfaces forming a preset included angle; Place the three-wave generator on the support structure and adjust the orientation of the three-wave generator so that the two long half-axis / short half-axis of the three-wave generator form a preset orientation relationship with the two positioning surfaces; Measure the linear distance between the reference point on the three-wave generator and the reference point on the support structure; Based on the linear distance, the preset angle, and the known geometric parameters of the three-wave generator, the major and minor semi-axis dimensions of the three-wave generator are calculated.

2. The method for measuring the half-shaft dimension of a three-wave generator according to claim 1, characterized in that, The support structure is a support block with a placement groove, and the two positioning surfaces are two inclined surfaces opposite to each other in the placement groove.

3. The method for measuring the half-shaft dimension of a three-wave generator according to claim 2, characterized in that, The preset included angle between the two inclined planes is 60°, and the included angle between the two inclined planes and the top edge of the support block is 120°.

4. The method for measuring the half-shaft dimension of a three-wave generator according to claim 2, characterized in that, The two inclined planes are symmetrical about the vertical plane.

5. The method for measuring the half-shaft dimension of a three-wave generator according to claim 3, characterized in that, The key positioning dimensions of the support block are set to be in a predetermined fixed multiple ratio to the base circle radius of the three-wave generator.

6. The method for measuring the half-shaft dimension of a three-wave generator according to claim 5, characterized in that, The height of the support block is set to 3 times the radius of the base circle; The distance from the virtual intersection of the two positioning surfaces to the bottom edge of the support block is set to 0.5 times the radius of the base circle; The distance from the virtual intersection of the two positioning surfaces to the side of the support block is set to twice the radius of the base circle; The width of the support block is set to 4 times the radius of the base circle.

7. The method for measuring the half-shaft dimension of a three-wave generator according to claim 6, characterized in that, The step of adjusting the orientation of the three-wave generator so that the major and minor semi-axis of the three-wave generator form a preset orientation relationship with the two positioning surfaces includes: Adjust the orientation of the three-wave generator so that its two major semi-axis are perpendicular to the two inclined planes.

8. The method for measuring the half-shaft dimension of a three-wave generator according to claim 7, characterized in that, The reference point on the three-wave generator is the top vertex of the three-wave generator, and the reference point on the support structure is the top edge of the support block; In the step of calculating the major and minor semi-axis dimensions of the three-wave generator based on the linear distance, the preset angle, and the known geometric parameters of the three-wave generator, the known geometric parameters include the base circle radius e; The calculation of the major semi-axis dimension of the three-wave generator is based on the following formula: ， Where a is the major semi-axis dimension and L is the measured linear distance.

9. The method for measuring the half-shaft dimension of a three-wave generator according to claim 6, characterized in that, The step of adjusting the orientation of the three-wave generator so that the major and minor semi-axis of the three-wave generator form a preset orientation relationship with the two positioning surfaces includes: Adjust the orientation of the three-wave generator so that its two short semi-axis are perpendicular to the two inclined planes.

10. The method for measuring the half-shaft dimension of a three-wave generator according to claim 9, characterized in that, The reference point on the three-wave generator is the top vertex of the three-wave generator, and the reference point on the support structure is the top edge of the support block; In the step of calculating the major and minor semi-axis dimensions of the three-wave generator based on the linear distance, the preset angle, and the known geometric parameters of the three-wave generator, the known geometric parameters include the base circle radius e; The calculation of the minor semi-axis dimension of the three-wave generator is based on the following formula: ， Where b is the minor semi-axis dimension and M is the measured linear distance.

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