Method for detecting perpendicularity of end face of end socket of assembled container
By adding a zero-distance right-angle head and height gauge combination to the micrometer collimator telescope and using the cosine theorem to calculate the verticality of the container head end face, the problems of difficulty in establishing the benchmark and low detection efficiency in the existing technology are solved, and efficient and accurate container head end face verticality detection is achieved.
Patent Information
- Application Number
- CN202511193926.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-25
- Publication Date
- 2025-10-17
AI Technical Summary
Existing methods for detecting the verticality of container head end faces have problems such as difficulty in establishing a benchmark, low detection efficiency, and limited accuracy. It is especially difficult to achieve efficient and accurate detection in large containers and complex working conditions.
A micrometer collimator telescope equipped with a zero-distance right-angle head is combined with a height gauge to calculate the verticality of the head end face using the cosine theorem, simplifying the benchmark alignment process and improving detection accuracy and efficiency.
It achieves efficient and accurate detection without strict alignment with the reference axis, is suitable for on-site batch detection and real-time detection during assembly, and reduces operational complexity and cost.
Smart Images
Figure CN120800265A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to a container end face perpendicularity detection method. BACKGROUND
[0002] In the high-precision manufacturing field of large pressure vessels, nuclear power equipment, aerospace tanks and the like, the perpendicularity of the end face of a container head directly affects the coaxiality, sealing performance and operation safety of subsequent assembly; therefore, accurate and efficient detection of the perpendicularity of the end face of the head has been a key control link in the manufacturing process.
[0003] The existing perpendicularity detection methods mainly adopt the following types:
[0004] Optical reference method: a microlitho collimator or a laser tracker is used to establish a container center axis as a reference, and then the perpendicularity is indirectly calculated by measuring the distance difference of a plurality of points on the end face of the head to the axis. However, this method requires that the optical axis of the measuring instrument must be strictly coincided with the theoretical center axis of the container, which is difficult to adjust on site, especially under the condition of a large container (diameter several meters to tens of meters), the instrument erection height is often several meters, which needs to be calibrated repeatedly, and the time consumption is often more than several hours.
[0005] Mechanical gauge method: a large right-angle ruler, a frame-type level or a special gauge is used to adhere to the end face of the head, and the deviation value is manually read; this method is greatly affected by human factors, the rigidity of the gauge itself and the accuracy of the reference surface are difficult to guarantee, and it cannot adapt to the measurement requirements of large curvature heads.
[0006] Three-coordinate measurement method: although the accuracy is high, the container needs to be transported to a fixed measurement platform, which has high requirements for on-site hoisting and temperature control environment, and the detection period is long and the cost is high, which cannot meet the real-time detection requirements of batch production or on-site assembly.
[0007] The above methods have the following common problems: it is difficult to establish a reference: the optical axis of the instrument or the mechanical reference must be coincided with the theoretical axis of the container, and the on-site operation is complex; the detection efficiency is low: the time consumption of single detection is too long, which cannot meet the requirements of modern manufacturing of “fast rhythm and short period”; the detection adaptability is poor: for the working conditions of large curvature head, limited end face space or complex on-site environment, the existing methods are difficult to implement; the accuracy is limited: the existing distance difference calculation method does not consider the actual geometric characteristics of the end face, which is easy to introduce system error. Therefore, a new type of perpendicularity detection method which does not need to strictly align the reference axis, is simple to operate, has high detection efficiency and reliable accuracy is needed to solve the problems of the prior art. SUMMARY
[0008] The application aims to solve the problems of alignment of the reference axis and low detection efficiency of the existing measurement method, and provides a detection method for the perpendicularity of the assembled end face of a container head.
[0009] The application discloses a detection method for the perpendicularity of an end face of a container head.
[0010] The microlitho collimating telescope with the zero-distance right-angle head is placed on the side of the container head to be detected, so that the measuring optical axis of the microlitho collimating telescope is coincident with the central axis of the container to be detected;
[0011] The end face of the container head to be detected is arranged with a plurality of height gauges along the circumferential direction at a distance from the center of the container head to be detected;
[0012] The height values of the height gauges at different positions are obtained by rotating the zero-distance right-angle head;
[0013] The difference between the maximum value and the minimum value in the height values is divided by 2 to obtain the angle value between the end face of the container head to be detected and the vertical plane, that is, the perpendicularity of the end face of the container head to be detected.
[0014] Further, the zero-distance right-angle head is detachably arranged at the front end of the microlitho collimating telescope.
[0015] Further, the height gauge is a precision height gauge or an adjustable ruler with a magnetic base.
[0016] Further, the maximum value and the minimum value in the height values are obtained from two measuring points on the circumference which are symmetric to each other by 180 degrees.
[0017] Further, the perpendicularity calculation formula of the end face of the container head to be detected is as follows:
[0018]
[0019] wherein, is the perpendicularity of the end face of the container head to be detected; is the maximum value in the height values of the height gauges; is the minimum value in the height values of the height gauges; is the distance value from the height gauges to the center of the end face of the container head to be detected.
[0020] Further, a support is arranged at the bottom of the microlitho collimating telescope.
[0021] Further, the support is a telescopic support.
[0022] Compared with the prior art, the application has the following beneficial effects:
[0023] The application is designed to assemble the container head end face perpendicularity detection method, which installs zero distance right angle head on the micrometer collimator telescope, so that the measurement optical axis of the micrometer collimator telescope coincides with the center axis of the whole container to be detected, and then the zero distance right angle head is used to measure the height scale value, the zero distance right angle head is rotated, the height values of the center axis and the height scale at each position are repeatedly measured, and the cosine theorem is used to calculate the perpendicularity of the container head end face. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 The actual measurement schematic diagram of the container head end face perpendicularity detection method is shown in the embodiment.
[0025] Wherein, 1 is the zero distance right angle head; 2 is the micrometer collimator telescope; 3 is the support; 4 is the height scale; 5 is the container to be detected; 6 is the spherical head flange. DETAILED DESCRIPTION
[0026] Embodiment one, combination Figure 1 The container head end face perpendicularity detection method includes the following steps:
[0027] The micrometer collimator telescope 2 with the zero distance right angle head 1 is placed on the side of the container head of the container to be detected 5, so that the measurement optical axis of the micrometer collimator telescope 2 coincides with the center axis of the whole container to be detected 5;
[0028] The distance between the container head end face of the container to be detected 5 and the center A plurality of height scales 4 are arranged in the circumferential direction at the distance of the container head end face of the container to be detected 5 from the center
[0029] The height values of the height scales 4 at each position are obtained by rotating the zero distance right angle head 1;
[0030] The difference between the maximum value and the minimum value in the measured height values is divided by 2 The angle value between the container head end face of the container to be detected 5 and the vertical face is calculated by the cosine theorem, that is, the perpendicularity of the container head end face of the container to be detected 5 is obtained.
[0031] In the embodiment, when multiple height gauges 4 are arranged, the multiple height gauges 4 are evenly distributed as much as possible, and when the height gauges 4 are arranged, the height gauges 4 are fixed on the spherical head flange 6, while the height gauges 4 are arranged at the highest point of the spherical head flange 6 and the lowest point of the spherical head flange 6; the measuring optical axis of the micrometer collimator telescope 2 is coincided with the overall center axis of the container 5 to be detected, and then the height gauge 4 value is measured by using the zero distance right angle head 1; the zero distance right angle head 1 is rotated, the height values of the center axis and each position height gauge 4 are repeatedly measured, and the perpendicularity of the head end face of the container 5 to be detected is calculated by using the cosine theorem; the detection accuracy and detection speed of the perpendicularity of the head end face of the container 5 to be detected are improved, and the alignment of the reference axis is simple and easy to operate; the micrometer collimator telescope 2 and the zero distance right angle head 1 are combined, without complex alignment of the reference axis, the operation process is simplified; the angle is calculated by using the cosine theorem, the accuracy of the perpendicularity detection is improved; the detection speed is fast, and is suitable for real-time detection in the process of batch detection or assembly on site.
[0032] Specific implementation method two, the embodiment is a further limitation of the detection method for assembling the perpendicularity of the head end face of the container described in the specific implementation method one, in the embodiment, the zero distance right angle head 1 is detachably added to the front end of the micrometer collimator telescope 2.
[0033] In the embodiment, the detachable mode can enhance the versatility: the zero distance right angle head 1 can be detached, facilitating replacement or maintenance; adapt to different measurement requirements: the zero distance right angle head 1 can be quickly adjusted or replaced according to different specifications of the container 5 to be detected; reduce equipment cost: the same micrometer collimator telescope 2 main body can be adapted to multiple zero distance right angle heads 1, reducing repeated investment. And the zero distance right angle head 1 is added to the front end of the micrometer collimator telescope 2 in order to improve the measurement accuracy and measurement accuracy.
[0034] Specific implementation method three, the embodiment is a further limitation of the detection method for assembling the perpendicularity of the head end face of the container described in the specific implementation method one, in the embodiment, the height gauge 4 is a precision height gauge or an adjustable ruler with a magnetic base.
[0035] In the embodiment, through the above setting, the measurement accuracy is improved, the precision height gauge or the magnetic ruler ensures stable and accurate reading; adapt to complex working conditions, the magnetic base can be fixed on the curved surface or irregular end face, enhancing the adaptability on site; reduce human error, the adjustable ruler with a magnetic base is fixed firmly, avoiding reading deviation caused by sliding or deviation.
[0036] Specific implementation method four, the embodiment is a further limitation of the detection method for assembling the perpendicularity of the head end face of the container described in the specific implementation method one, in the embodiment, the maximum value and the minimum value in the height value are taken from two measurement points on the circumference which are symmetrically opposite to 180°.
[0037] In the embodiment, by the above definition, the data representativeness is improved, the symmetry point sampling can more accurately reflect the overall inclination trend of the end face of the container 5 head, thereby reducing the influence of local error and avoiding misjudgment caused by local concave-convex or processing error; the calculation logic is simplified, reliable results can be obtained only by symmetric two-point data, and the efficiency is improved.
[0038] Specific embodiment five, the embodiment is further limited to the detection method for assembling the container head end face perpendicularity described in specific embodiment one, in the embodiment, the perpendicularity calculation formula of the container head end face of the container to be detected 5 is:
[0039]
[0040] Among them, is the perpendicularity of the container head end face of the container to be detected 5; is the maximum value of the height value of the height ruler 4; is the minimum value of the height value of the height ruler 4; is the distance value of the height ruler 4 and the distance from the container head end face to be detected 5 to the center.
[0041] In the embodiment, by giving the perpendicularity calculation formula of the container head end face to be detected, the detection result is standardized, the formula is unified to ensure the consistency of the results between different operators or equipment; it is convenient for automatic processing, the formula is simple and easy to integrate into data processing software or automatic system; reduce human error, replace experience estimation by mathematical model, improve reliability.
[0042] Specific embodiment six, the embodiment is further limited to the detection method for assembling the container head end face perpendicularity described in specific embodiment one, in the embodiment, the support 3 is arranged at the bottom of the micrometer collimating telescope 2.
[0043] In the embodiment, the support 3 has the following effects: enhancing the stability of the equipment; the support 3 reduces the vibration or deviation caused by hand holding or temporary support; and reducing the operation difficulty, a single person can complete the measurement without the cooperation of multiple people; at the same time, the measurement repeatability is improved, and the fixed support 3 ensures that the measurement position is consistent every time.
[0044] Specific embodiment seven, the embodiment is further limited to the detection method for assembling the container head end face perpendicularity described in specific embodiment six, in the embodiment, the support 3 is a telescopic support.
[0045] In the embodiment, the support 3 is a telescopic support, which can automatically adjust the height of the support according to requirements to adapt to containers of different heights, and is suitable for containers from meter level to ten-meter level; the telescopic support is convenient for on-site deployment, does not need to be customized, can be quickly adjusted to adapt to various working conditions, saves storage and transportation space, has small volume after being retracted, and is convenient for carrying and maintenance.
[0046] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A method for detecting the verticality of the end face of an assembled container head, characterized in that: The following steps are involved: A micrometer collimator (2) equipped with a zero-distance right-angle head (1) is placed on the head side of the container (5) to be inspected, so that the measuring optical axis of the micrometer collimator (2) coincides with the overall central axis of the container (5) to be inspected; The distance between the end face of the container to be tested (5) and the center A plurality of height gauges (4) are arranged along the circumferential direction; Obtain the height value of the height gauge (4) at each position by rotating the zero distance right angle head (1); Divide the difference between the maximum and minimum measured height values by 2 , and then calculate the angle between the end face of the container (5) to be tested and the vertical plane by the cosine theorem, that is, the verticality of the end face of the container (5) to be tested is obtained.
2. A method for detecting the verticality of the end face of an assembled container head according to claim 1, characterized in that: The zero-distance right-angle head (1) is detachably nested in the front end of the micrometer collimating telescope (2).
3. The method for detecting the verticality of the end face of an assembled container head according to claim 1, characterized in that: The height gauge (4) is a precision height gauge or an adjustable ruler with a magnetic base.
4. The method for detecting the verticality of the end face of an assembled container head according to claim 1, characterized in that: The maximum value and the minimum value of the height values are taken from two measuring points on the circumference that are symmetrical with respect to each other by 180°.
5. The method for detecting the verticality of the end face of an assembled container head according to claim 1, characterized in that: The calculation formula for the verticality of the end face of the container (5) to be tested is: in, The verticality of the end face of the container (5) to be tested; is the maximum value among the height values of the height scale (4); is the minimum value among the height values of the height scale (4); is the distance between the height gauge (4) and the center of the end face of the container (5) to be tested.
6. The method for detecting the verticality of the end face of an assembled container head according to claim 1, characterized in that: A bracket (3) is provided at the bottom of the micrometer collimating telescope (2).
7. A method for detecting the verticality of the end face of an assembled container head according to claim 6, characterized in that: The bracket (3) is a retractable bracket.