Device and method for detecting hole position accuracy and torsion angle deviation of different end surfaces of cylindrical shell

Abstract

The present invention relates to a device and method for detecting the position accuracy and torsion angle deviation of holes on different end faces of a cylindrical shell, comprising: a plurality of gauges, which are generally in a circular ring structure, wherein the diameter of the inner circle of the gauges matches the diameter of the inner stop of the shell to be detected, and the surface of the gauge body is provided with a plurality of inspection holes that match the holes to be detected; a three-jaw self-centering chuck, which is mounted on the inner circle of the gauge, and the gauge is connected to the end face of the shell to be detected and centrally positioned by the three-jaw self-centering chuck; a plurality of detection components, which are in the shape of round rods, and during detection, the position accuracy of holes on different end faces of the shell is detected by inserting the plurality of detection components into the detection holes; a three-coordinate detection device, which, when detecting torsion angle deviation, places the shell to be tested, equipped with the gauges and detection components, horizontally on the roller of the three-coordinate measuring device, and uses the three-coordinate detection device to measure the center positions and outer diameters of the corresponding plurality of detection components to obtain the torsion angle deviation of the plurality of holes on different end faces. This reduces detection time and improves detection efficiency.

Description

Technical Field

[0001] The present invention relates to a device and method for detecting the position and torsion angle deviation of a cylindrical shell, and in particular to a device and method for detecting the position and torsion angle deviation of a plurality of holes on different end faces of a cylindrical shell produced in large quantities by a numerically controlled machine tool. Background Art

[0002] A cylindrical shell is a shell with a tubular shape, usually with two end faces and one or more partitions parallel to the end faces. When machining the shell, the shell end faces and partitions need to have several holes for connection with other parts, including through holes and threaded holes. To ensure the smooth installation of the shell and other parts, it is necessary to ensure that the position and torsional deviation of the holes on the shell surface are within a certain tolerance range. At present, the conventional detection equipment for the position and torsional deviation of such parts is a three-coordinate detection equipment, which measures the position and torsional deviation of each hole. However, the use of three-coordinate detection equipment is relatively cumbersome, and each hole needs to use a three-coordinate device, resulting in high labor intensity and low detection efficiency. Summary of the Invention

[0003] In response to the shortcomings in the related art, the present invention provides a device and method for detecting the position and torsion angle deviation of multiple holes on different end faces of a cylindrical shell, which reduces the detection time and improves the detection efficiency.

[0004] A device for detecting positional accuracy and torsion angle deviation of multiple holes on different end faces of a cylindrical shell, comprising:

[0005] Multiple inspection jigs, which are generally in a circular ring structure, with the inner diameter of the inspection jig matching the diameter of the shell stop to be inspected, and the surface of the inspection jig body is provided with a plurality of inspection holes matching the holes to be inspected;

[0006] A three-jaw self-centering chuck is installed on the inner circle of the inspection fixture, and the inspection fixture is connected to the end face of the shell to be inspected and the center is positioned by the three-jaw self-centering chuck;

[0007] Multiple detection components are in the shape of round rods. During detection, the position of the holes on different end faces of the shell can be detected by inserting the multiple detection components into the detection holes;

[0008] When testing torsional angle deviation using a three-coordinate measuring device, the shell to be tested, which is assembled with the inspection fixture and inspection components, is placed horizontally on the roller of the three-coordinate measuring device. The center positions and outer diameters corresponding to multiple inspection components are measured using the three-coordinate measuring device to obtain the torsional angle deviation of multiple holes on different end faces.

[0009] This technical solution realizes the detection of position and torsion angle deviation of multiple holes on different end faces of a cylindrical shell, and solves the problem of low detection efficiency due to the need to use a three-coordinate detection device for each hole when detecting position and torsion angle deviation.

[0010] In some embodiments, the multiple holes on different end surfaces of the cylindrical housing are smooth holes and / or threaded holes, the inspection hole is a through hole and / or a threaded hole, and the inspection assembly is a smooth hole pin and / or a threaded pin. This technical solution achieves matching of the inspection hole and the inspection assembly, improving inspection accuracy.

[0011] In some embodiments, the smooth hole pin comprises:

[0012] A cylindrical rod, which is inserted into the inspection hole during inspection;

[0013] The rod head is connected to one end of the rod body and is clamped on the outer surface of the inspection tool body.

[0014] This technical solution realizes the convenient use of detection components.

[0015] In some embodiments, the threaded pin comprises:

[0016] The threaded column rod is inserted into the inspection hole during inspection;

[0017] The rod head is connected to one end of the rod body and is clamped on the outer surface of the gauge body.

[0018] This technical solution realizes the convenient use of detection components.

[0019] In some embodiments, the inner surface and the outer surface of the gauge body are both flat. This technical solution improves the convenience of installation.

[0020] In some embodiments, the material of the inspection tool and the inspection component is a high-hardness material. This technical solution improves the accuracy of the inspection and the service life of the device.

[0021] In some embodiments, measuring the center positions and outer diameters corresponding to the plurality of detection components specifically involves measuring the center positions and outer diameters corresponding to two detection components on each inspection tool.

[0022] In some embodiments, the different end surfaces of the shell further include: outer end surfaces on both sides of the shell and inner partition end surfaces.

[0023] A detection method using a detection device for detecting position accuracy and torsion angle deviation of multiple holes on different end faces of a cylindrical shell, comprising:

[0024] Installation steps: Install the gauge on the end face of the shell to be tested using a three-jaw self-centering chuck. Position detection requires installation on at least one end face of the shell, while torsional deviation detection requires installation on at least two end faces of the shell.

[0025] Measuring steps: installing the detection component in the detection hole, placing the installed inspection fixture and the detection component shell horizontally on the roller of the three-dimensional coordinate measuring device, using the three-dimensional coordinate measuring device to collect the center position and diameter of the two detection component rods on each inspection fixture and the center reference line of the cylindrical shell, and projecting the concentric position and diameter into the same plane;

[0026] Result determination: whether the position accuracy is qualified is determined by whether the detection component is installed in the detection hole; whether the torsion angle deviation is qualified is determined based on the concentric circle position and diameter collected by the three-coordinate measuring equipment and the center reference line of the cylindrical shell.

[0027] This technical solution realizes the detection of position and torsion angle deviation of multiple holes on different end faces of a cylindrical shell, and solves the problem of low detection efficiency due to the need to use a three-coordinate detection device for each hole when detecting position and torsion angle deviation.

[0028] In some embodiments, the method for determining the torsion angle deviation in the determination result step includes: connecting the centers of two rods on one of the inspection fixtures with the center reference of the shell, denoted as X1 and X2, and connecting the centers of two rods on the other inspection fixture with the center reference of the shell, denoted as Y1 and Y2, and calculating the deviation between the angle between X1 and Y1 and the angle between X2 and Y2. This technical solution enables determination of torsion angle deviation, allowing determination of torsion angle deviation compliance using only four points collected using three-dimensional coordinate measuring equipment.

[0029] Based on the above technical solution, the device for detecting the position accuracy and torsion angle deviation of multiple holes on different end faces of a cylindrical shell in the embodiment of the present invention solves the problems of high manual labor intensity and low detection efficiency; the method for detecting the position accuracy and torsion angle deviation of multiple holes on different end faces of a cylindrical shell solves the problem of improving detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0031] Figure 1 This is a schematic diagram of the installation state of the position detection embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the installation state of the torsion angle deviation detection according to an embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram of the structure of a housing to be detected according to an embodiment of the present invention;

[0034] Figure 4 This is a structural diagram of a checking fixture device according to an embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of the structure of a light hole pin rod according to an embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of the structure of a threaded pin according to an embodiment of the present invention;

[0037] Figure 7 Calculate projection views for torsion angle deviation according to an embodiment of the present invention;

[0038] In the picture:

[0039] 1. Inspection fixture; 11. Inspection hole; 12. Inner circle; 2. Three-jaw self-centering chuck; 3. Inspection assembly; 31. Light hole inspection fixture; 32. Threaded inspection fixture; 33. Cylindrical rod; 34. Rod head; 35. Threaded cylindrical rod; 4. Three-dimensional coordinate inspection equipment; 41. Roller; 5. Housing; 51. Internal stop; 52. First end face; 53. Second end face; 54. Hole to be inspected; 55. Outer end face; 56. Partition end face. DETAILED DESCRIPTION

[0040] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be understood that the terms "center", "transverse", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0042] The terms "first," "second," and "third" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly specify the quantity of the technical features indicated. Therefore, a feature specified as "first," "second," or "third" may explicitly or implicitly include one or more of such features.

[0043] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0044] like Figure 1-4 and Figure 7 As shown, the present invention provides a device for detecting the position and torsion angle deviation of multiple holes on different end faces of a cylindrical shell, including multiple inspection tools, a three-jaw self-centering chuck, multiple inspection components and a three-coordinate inspection device;

[0045] The plurality of inspection jigs 1 are generally in a circular ring structure. The diameter of the inner circle 12 of the inspection jig 1 matches the diameter of the inner stop 51 of the shell 51 to be inspected. The surface of the inspection jig 1 body is provided with a plurality of inspection holes 11 that match the holes to be inspected. It can be understood that the position reference, position size and shape size of the inspection jig 1 body are determined according to the design of the holes to be inspected 54 on the end face of the shell 5, and the inspection holes 11 also need to meet the tolerance requirements of the standard.

[0046] Further explanation, in the embodiment of this scheme, the diameter of the inner circle 12 of the inspection tool 1 is the same as the diameter of the inner stop 51 of the shell 5 to be inspected, the center of the inspection hole 11 and the center of the hole to be inspected 54 are at the same distance from the center of the inner stop 51, the diameter of the inspection hole 11 is the same as the diameter of the hole to be inspected 54 (meeting the standard tolerance requirements), and the shape of the inspection hole 11 is the same as the shape of the hole to be inspected 54.

[0047] The three-jaw self-centering chuck is installed on the inner circle of the inspection fixture 1, and the inspection fixture 1 is connected to the end face of the shell 5 to be inspected and the center is positioned through the three-jaw self-centering chuck 2; it can be understood that the three-jaw self-centering chuck 2 is used to connect and position the inspection fixture 1 to the end face of the shell 5, with the purpose of aligning the inspection hole 11 on the inspection fixture body with the hole 54 to be inspected.

[0048] Multiple detection components 3 are in the shape of round rods. During detection, multiple detection components 3 are inserted into the detection holes 11 to realize the position detection of holes on different end faces of the shell 5; it can be understood that during detection, multiple detection components 3 are inserted one by one through the detection holes 11 of the inspection tool 1 body into the holes to be detected 54 to determine whether the position is qualified.

[0049] To further explain, if multiple detection components 3 can be inserted into the inspection hole 11 without being loose, the hole positioning is judged to be qualified; if one of the detection components 3 fails to pass through the inspection hole 11 on the inspection fixture 1 and is installed in the hole to be detected 54 or shakes when installed in the hole to be detected 54, the positioning is judged to be unqualified.

[0050] When testing the torsional angle deviation using the three-coordinate measuring device 4, the housing 5 to be tested, assembled with the inspection fixture 1 and the inspection component 3, is placed horizontally on the roller 41 of the three-coordinate measuring device 4. The three-coordinate measuring device 4 measures the center positions and outer diameters of the corresponding multiple inspection components 3 to determine the torsional angle deviation of multiple holes on different end faces. It is understood that the three-coordinate measuring device 4 is used to determine the center of the inspection hole 11 (the same as the center of the hole to be tested), and the torsional angle deviation is determined based on the angle between the line connecting the center of each of the two holes on the two different end faces and the center of the inner circle (the same as the center of the inner stop).

[0051] To further illustrate, taking the torsional deviation of holes on two end faces of the housing 5, namely the first end face 52 and the second end face 53, as an example, if the center position and diameter of the detection component 3 are obtained on the first end face 52 through the three-coordinate detection device 4, the centers X1 and X2 of the detection hole 11 can be determined through the center position and diameter. The second end face 53 uses the above method to obtain the centers Y1 and Y2 of the detection hole 11 through the three-coordinate detection device 4; X1, X2, Y1, and Y2 are projected onto a plane and connected to the reference center respectively. The torsional deviation is determined by the relationship between the angle between X1 and Y1 and the angle between X2 and Y2. In this embodiment, only four points need to be collected by the three-coordinate detection device 4 to determine whether the torsional deviation of multiple holes on different end faces is qualified.

[0052] To further illustrate, if the angle between X1 and Y1 is equal to the angle between X2 and Y2 (which can be within the tolerance range allowed by the standard), the torsion angle deviation of the hole is judged to be qualified, otherwise it is unqualified.

[0053] To further illustrate, when detecting position, one plane can be detected or multiple end faces can be detected simultaneously; when detecting torsion angle deviation, at least two end faces are detected, and each end face uses at least three-coordinate detection equipment 4 to read the values ​​of two detection components 3.

[0054] This technical solution realizes the detection of position accuracy and torsion angle deviation of multiple holes on different end faces of a cylindrical shell, thereby improving detection efficiency.

[0055] like Figure 5-6 As shown, in other embodiments, the multiple holes on different end surfaces of the cylindrical housing 5 are smooth holes and / or threaded holes, the inspection hole 11 is a through hole and / or a threaded hole, and the inspection assembly 3 is a smooth hole pin 31 and / or a threaded pin 32. It is understood that if the inspection hole 54 is a smooth hole, the inspection assembly 3 inserted into the inspection hole 54 is a smooth hole pin 31; if the inspection hole 54 is a threaded hole, the inspection assembly 3 inserted into the inspection hole 54 is a threaded pin. Matching the type of the inspection hole 4 with the type of the inspection assembly 3 improves inspection accuracy.

[0056] To further illustrate, the detection components 3 installed on a detection fixture 1 can all be smooth hole pins 31, can all be threaded pins 32, or can be a mixture of the two.

[0057] like Figure 5-6 As shown, in some other embodiments, the hole pin 31 includes: a cylindrical rod body 33, which is inserted into the inspection hole 11 during inspection; and a rod head 34, which is connected to one end of the rod body 31 and is retained on the outer surface of the inspection fixture 1. It will be understood that when the cylindrical rod body 33 is inserted through the inspection hole 11 into the inspection hole 54, the rod head 34 can be retained on the inspection fixture 1 without shaking, facilitating the subsequent insertion of the inspection component 3 and improving the convenience of inspection.

[0058] like Figure 5-6 As shown, in some other embodiments, the threaded pin 35 includes: a threaded cylindrical body 35, which is inserted into the inspection hole during inspection; and a head 34, which is connected to one end of the body 35 and is clamped on the outer surface of the inspection fixture 1. Based on the principle and function of the hole pin 31, this section will not be further described. Those skilled in the art will be aware of the principle and function of the threaded pin 32.

[0059] like Figure 4 As shown, in some other embodiments, the inner and outer surfaces of the body of the gauge 1 are both plane. It is understandable that the plane of the gauge 1 can better fit the end surface of the cylinder 5, which is conducive to improving the accuracy of the detection.

[0060] like Figure 4-6 As shown, in some other embodiments, the gauge 1 and detection component 3 are made of high-hardness materials. It is understood that during mass production, the device will need to be used repeatedly. High-hardness materials for both the gauge and detection components can ensure they remain deformed, increasing their service life. Furthermore, high-hardness materials prevent deformation of the detection hole, ensuring detection accuracy.

[0061] like Figure 7 As shown, in some other embodiments, measuring the center positions and outer diameters corresponding to multiple detection components 3 specifically involves measuring the center positions and outer diameters corresponding to two detection components 3 on each inspection fixture 1. This means that, when testing the torsional angle deviation of multiple holes on two end faces, regardless of the number of holes, only four points need to be collected by the three-dimensional coordinate measuring device to determine the torsional angle deviation, thereby improving inspection efficiency.

[0062] like Figure 3 As shown, in some other embodiments, the different end surfaces of the housing 5 further include: outer end surfaces 55 on both sides of the housing and internal partition end surfaces 56. It is understood that there are two outer end surfaces 55, respectively disposed at both ends of the housing 5, and there can be multiple internal partition end surfaces 56, which are generally disposed parallel to the outer end surfaces 55.

[0063] like Figure 1-7 As shown, the present invention also provides a detection method for a device for detecting position accuracy and torsion angle deviation of multiple holes on different end faces of a cylindrical shell, comprising:

[0064] Installation steps: Install the gauge on the end face of the shell 5 to be tested through the three-jaw self-centering chuck 2, wherein the position detection needs to be installed on at least one end face of the shell 5, and the torsional deviation detection needs to be installed on at least two end faces of the shell 5; it can be understood that first, the three-jaw self-centering chuck 2 is installed and connected to the inner circle 12 of the gauge 1, and then installed to the inner stop 51 of the end face, and the bolts on the three-jaw self-centering chuck 2 are rotated to drive the three rotating shafts to move outward, thereby clamping the gauge 1 and aligning the gauge 1 with the center of the shell 5.

[0065] Measurement steps: Install the detection component 3 in the inspection hole 11, and place the shell 5 with the installed inspection fixture 1 and the detection component 3 horizontally on the roller 41 of the three-coordinate detection device 4. Use the three-coordinate detection device 4 to collect the center position and diameter of the two detection component 3 rods on each inspection fixture 1 and the center reference line of the cylindrical shell, and project the concentric position and diameter into the same plane; it can be understood that the three-coordinate device reads the concentric circle position and diameter of the detection component rod and can calculate the center of the inspection hole (equivalent to the center of the hole to be inspected) based on it, and then project the collected centers of the inspection holes in different planes onto a virtual surface of the three-coordinate device, and the software automatically calculates the torsional angle deviation.

[0066] Result determination: Whether the position accuracy is qualified is determined by whether the detection component is installed in the inspection hole; whether the torsional angle deviation is appropriate is determined based on the position and diameter of the concentric circles collected by the three-dimensional coordinate measuring equipment and the center reference line of the cylindrical shell. It can be understood that the position accuracy is determined as follows: if multiple detection components can be inserted into the inspection hole without looseness, the hole position accuracy is determined to be qualified; if one of the detection components fails to pass through the inspection hole on the inspection fixture and is installed in the hole to be inspected, or if it shakes when installed in the hole to be inspected, the position accuracy is determined to be unqualified.

[0067] Furthermore, the method for determining the torsion angle deviation is as follows: if the first end face obtains the center X1 and X2 of the hole to be detected by the three-coordinate detection equipment, and the second end face obtains the center Y1 and Y2 of the detection hole by the three-coordinate equipment; if the angle between X1 and Y1 is equal to the angle between X2 and Y2 (which can be within the tolerance range allowed by the standard), then the torsion angle deviation of the hole is determined to be qualified, otherwise it is unqualified.

[0068] Through the description of multiple embodiments of the device and method for detecting the position accuracy and torsion angle deviation of multiple holes on different end surfaces of a cylindrical shell of the present invention, it can be seen that the embodiments of the device and method for detecting the position accuracy and torsion angle deviation of multiple holes on different end surfaces of a cylindrical shell of the present invention have at least one or more of the following advantages:

[0069] The present invention solves the problem of low detection efficiency when detecting position accuracy and torsion angle deviation, and realizes accurate and rapid detection of position accuracy and torsion angle deviation of different end holes of a shell.

[0070] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0071] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the same. Although the present invention has been described in detail with reference to preferred embodiments, persons skilled in the art should understand that the specific implementation methods of the present invention may still be modified or some technical features may be replaced by equivalents without departing from the spirit of the technical solutions of the present invention, and all of these should fall within the scope of the technical solutions claimed for protection by the present invention.

Claims

1. A device for detecting the positional accuracy and torsion angle deviation of different end surfaces of a cylindrical shell, characterized in that: include: Multiple inspection tools, which are generally in a circular ring structure, wherein the inner diameter of the inspection tool matches the diameter of the inner stop of the shell to be inspected, and the surface of the inspection tool body is provided with a plurality of inspection holes that match the holes to be inspected; A three-jaw self-centering chuck is installed on the inner circle of the inspection tool, and the inspection tool is connected to the end face of the shell to be inspected and the center is positioned by the three-jaw self-centering chuck; Multiple detection components are in the shape of round rods. During detection, multiple detection components are inserted into the detection holes to realize the position detection of the holes on different end faces of the shell. The multiple detection components are inserted into the holes to be detected through the detection holes of the inspection tool body one by one to determine whether the position is qualified. When detecting the torsion angle deviation using a three-coordinate detection device, the shell to be tested, which is assembled with the inspection fixture and the inspection component, is placed horizontally on the roller of the three-coordinate detection device. The center positions and outer diameters corresponding to multiple inspection components are measured by the three-coordinate detection device to obtain the torsion angle deviation of multiple holes on different end faces.

2. The device for detecting the position accuracy and torsion angle deviation of different end surfaces of a cylindrical shell according to claim 1, characterized in that: The multiple holes on different end faces of the cylindrical shell are light holes and / or threaded holes, the detection holes are through holes and / or threaded holes, and the detection components are light hole pins and / or threaded pins.

3. The device for detecting the position accuracy and torsion angle deviation of different end surfaces of a cylindrical shell according to claim 2, characterized in that: The light hole pin rod comprises: A cylindrical rod, which is inserted into the inspection hole during inspection; The rod head is connected to one end of the rod body and is clamped on the outer surface of the gauge body.

4. The device for detecting the position accuracy and torsion angle deviation of different end surfaces of a cylindrical shell according to claim 2, characterized in that: The threaded pin comprises: A threaded column body, wherein the threaded column body is inserted into the inspection hole during inspection; The rod head is connected to one end of the rod body and is clamped on the outer surface of the gauge body.

5. The device for detecting the position accuracy and torsion angle deviation of different end surfaces of a cylindrical shell according to claim 1, characterized in that: The inner surface and the outer surface of the checking tool body are both planes.

6. The device for detecting the position accuracy and torsion angle deviation of different end surfaces of a cylindrical shell according to claim 1, characterized in that: The materials of the inspection tool and the inspection component are high-hardness materials.

7. The device for detecting the position accuracy and torsion angle deviation of different end surfaces of a cylindrical shell according to claim 1, characterized in that: The measuring of the circle center positions and outer diameters corresponding to the plurality of detection components specifically involves measuring the circle center positions and outer diameters corresponding to two detection components on each inspection tool.

8. The device for detecting the position accuracy and torsion angle deviation of different end surfaces of a cylindrical shell according to claim 1, characterized in that: The different end surfaces of the shell further include: outer end surfaces on both sides of the shell and inner partition end surfaces.

9. A method for detecting the position accuracy and torsion angle deviation of different end surface holes of a cylindrical shell, characterized in that: The device for detecting the position accuracy and torsion angle deviation of different end surfaces of a cylindrical shell according to any one of claims 1 to 8, wherein the detection method comprises: Installation step: Install the inspection fixture on the end face of the shell to be tested using a three-jaw self-centering chuck. The position detection device needs to be installed on at least one end face of the shell, and the torsional deviation detection device needs to be installed on at least two end faces of the shell; Measuring steps: Install the detection component in the detection hole, place the installed inspection fixture and the detection component shell horizontally on the roller of the three-dimensional coordinate measuring device, use the three-dimensional coordinate measuring device to collect the center position and diameter of the two detection component rods on each inspection fixture and the center reference line of the cylindrical shell, and project the concentric circle position and diameter into the same plane; Result determination: whether the position accuracy is qualified is determined based on whether the detection component is installed in the detection hole; whether the torsion angle deviation is qualified is determined based on the concentric circle position and diameter collected by the three-coordinate detection equipment and the center reference line of the cylindrical shell.

10. The detection method according to claim 9, characterized in that: The method for determining the torsion angle deviation in the result determination step includes: connecting the centers of the two rods on one of the inspection tools with the center reference of the shell, namely X1 and X2, and connecting the centers of the two rods on the other inspection tool with the center reference of the shell, namely Y1 and Y2, and calculating the deviation between the angle between X1 and Y1 and the angle between X2 and Y2.

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