Thread hole perpendicularity detection device and detection method

Abstract

The application provides a threaded hole perpendicularity detection device and method, the detection device comprises a threaded hole detection rod, a driving device, a photoelectric detector, an image recognizer and a processor, the driving device, the photoelectric detector and the image recognizer are all in communication connection with the processor; the threaded hole detection rod comprises a detection part and a measurement part, at least one of the detection part and the measurement part can be in abutment with a threaded hole to be detected; the driving device is connected with the detection part, and the driving device is used to drive the threaded hole detection rod to rotate in the threaded hole to be detected; the photoelectric detector is used to obtain a machining plane of the threaded hole to be detected; the image recognizer is used to obtain a rotating profile of the threaded hole detection rod when rotating in the threaded hole to be detected; the processor is used to fit a rotating axis based on the rotating profile, and obtain the perpendicularity of the threaded hole to be detected according to the angle between the rotating axis and the machining plane. The application is beneficial to reduce the error of threaded hole perpendicularity detection and improve the accuracy of detection results.

Description

Technical Field

[0001] This application relates to mechanical parts inspection technology, and more particularly to a threaded hole perpendicularity inspection device and inspection method. Background Technology

[0002] In mechanical equipment, many mechanical parts are provided with threaded holes. In order to ensure the assembly requirements of the parts, the drawings specify the perpendicularity requirements of the threaded holes. For some situations with high assembly requirements, the perpendicularity of the bolt or screw after it is installed into the threaded hole at a specific height is even specified. Therefore, the perpendicularity of the threaded holes on the parts is checked before assembly.

[0003] In related technical solutions, the perpendicularity of a threaded hole can be detected using a thread perpendicularity gauge. The gauge consists of a main body and a threaded section. The diameter of the main body is larger than the diameter of the threaded hole to be tested, and the thread on the threaded section matches the thread of the threaded hole. During testing, the threaded section is screwed into the threaded hole so that the surface of the main body abuts against the plane of the threaded hole. Then, a feeler gauge is inserted between the surface of the main body and the plane of the threaded hole, and the perpendicularity of the threaded hole is indirectly checked by measuring the gap. Alternatively, the perpendicularity of the threaded hole can be indirectly checked by measuring the side of the main body.

[0004] However, due to manufacturing process reasons, the threaded hole to be tested may not be perfectly matched with the threaded section. When the threaded section is screwed into the threaded hole to be tested, there may be a gap between the threaded section and the threaded hole to be tested, which will cause the thread perpendicularity gauge to wobble in the threaded hole to be tested, thus making the test results inaccurate. Summary of the Invention

[0005] In order to overcome the above-mentioned defects in related technologies, the purpose of this application is to provide a thread hole perpendicularity detection device and detection method. This application is beneficial to reducing the error of thread hole perpendicularity detection and improving the accuracy of detection results.

[0006] On the one hand, this application provides a thread hole perpendicularity detection device, including a thread detection bar, a drive device, a photoelectric detector, an image recognizer and a processor, wherein the drive device, the photoelectric detector and the image recognizer are all communicatively connected to the processor;

[0007] The thread detection bar includes a detection part and a measuring part, at least one of which can abut against the threaded hole to be detected;

[0008] The driving device is connected to the detection unit, and the driving device is used to drive the thread detection bar to rotate in the thread hole to be detected;

[0009] The photodetector is used to acquire the machining plane of the threaded hole to be detected; the image recognizer is used to acquire the rotation profile of the thread detection bar when it rotates in the threaded hole to be detected; the processor is used to fit the rotation axis based on the rotation profile and acquire the perpendicularity of the threaded hole to be detected according to the angle between the rotation axis and the machining plane.

[0010] In one possible implementation, the diameter of the measuring part gradually decreases in the direction away from the detection part;

[0011] The diameter of the measuring part near the detection part is equal to the stop end size of the thread plug gauge that is adapted to the thread hole to be tested; the diameter of the middle part of the measuring part is equal to the go end size of the thread plug gauge that is adapted to the thread hole to be tested; and the diameter of the measuring part away from the detection part is equal to the minimum pitch diameter of the go end of the thread plug gauge that is adapted to the thread hole to be tested. The thread testing rod abuts against the thread hole to be tested through the measuring part.

[0012] In one possible implementation, the measuring part includes a first threaded section, a second threaded section, and a third threaded section, wherein the first threaded section is disposed close to the detection part, the second threaded section is located between the first threaded section and the third threaded section, and the third threaded section is disposed away from the detection part;

[0013] The diameter of the first threaded section is equal to the stop end size of the thread plug gauge that is adapted to the threaded hole to be tested; the diameter of the second threaded section is equal to the go end size of the thread plug gauge that is adapted to the threaded hole to be tested; and the diameter of the third threaded section is equal to the minimum pitch diameter of the go end of the thread plug gauge that is adapted to the threaded hole to be tested. The thread testing rod abuts against the threaded hole to be tested through the measuring part.

[0014] In one possible implementation, the diameter of the measuring part is equal to the swivel end size of the thread plug gauge adapted to the threaded hole to be tested, and the thread testing rod abuts against the plane where the threaded hole to be tested is located through the end face of the testing part.

[0015] In one possible implementation, the drive device includes a motor and an adapter, and the end of the detection unit opposite to the measuring unit is also provided with a connecting part. The two ends of the adapter are respectively sleeved on the output shaft of the motor and the connecting part.

[0016] In one possible implementation, the adapter is a flexible head.

[0017] In one possible implementation, the drive device is also used to screw the thread detection bar into the threaded hole to be detected.

[0018] In one possible implementation, the adapter is further provided with a torque sensor, which is communicatively connected to the processor.

[0019] On the other hand, this application provides a method for detecting the perpendicularity of a threaded hole, implemented based on the aforementioned threaded hole perpendicularity detection device, comprising:

[0020] Obtain the machining plane of the threaded hole to be tested and the rotational profile of the thread testing rod within the threaded hole to be tested;

[0021] The rotation axis is fitted based on the rotation profile;

[0022] The perpendicularity of the threaded hole to be tested is obtained based on the angle between the rotation axis and the machining plane.

[0023] In one possible implementation, obtaining the machining plane of the threaded hole to be detected includes:

[0024] At least three detection rays are emitted toward the plane containing the threaded hole to be detected, wherein the three detection rays are not on the same straight line;

[0025] Receive the reflected light from the detected light;

[0026] The processing plane is fitted based on the reflected light.

[0027] This application provides a thread hole perpendicularity detection device and method. The thread hole perpendicularity detection device includes a thread detection bar, a driving device, a photoelectric detector, an image recognizer, and a processor. The driving device, photoelectric detector, and image recognizer are all communicatively connected to the processor. The thread detection bar includes a detection part and a measuring part, at least one of which can abut against the thread hole to be detected. The driving device is connected to the detection part and is used to drive the thread detection bar to rotate within the thread hole to be detected. The photoelectric detector is used to acquire the machining plane of the thread hole to be detected. The image recognizer is used to acquire the rotation profile of the thread detection bar when it rotates within the thread hole to be detected. The processor is used to fit a rotation axis based on the rotation profile and obtain the perpendicularity of the thread hole to be detected based on the angle between the rotation axis and the machining plane. This application fits the rotation axis by the rotation profile of the thread detection bar when it rotates within the thread hole to be detected; and acquires the machining plane of the thread hole to be detected, obtaining the perpendicularity of the thread hole to be detected based on the angle between the rotation axis and the machining plane of the thread hole to be detected. This application ensures that the test results are not affected by the movement of the thread test bar inside the threaded hole to be tested, which helps to reduce the error in the perpendicularity test of the threaded hole and improve the accuracy of the test results. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A simplified structural diagram of a thread hole perpendicularity detection device provided in an embodiment of this application;

[0030] Figure 2 This is a schematic diagram of the detection principle of a thread hole perpendicularity detection device provided in an embodiment of this application;

[0031] Figure 3 A simplified structural diagram of a thread detection rod provided in one embodiment of this application;

[0032] Figure 4 A simplified structural diagram of a thread detection rod provided in another embodiment of this application;

[0033] Figure 5 This is a flowchart of a threaded hole perpendicularity detection method provided in an embodiment of this application.

[0034] Figure label:

[0035] 10-Machining plane; 11-Threaded hole to be inspected; 12-Rotation profile; 13-Rotation axis;

[0036] 100 - Thread testing bar; 110 - Testing section; 120 - Measuring section; 130 - Connecting section;

[0037] 200 - Drive unit; 210 - Motor; 220 - Adapter;

[0038] 300-Photodetector;

[0039] 400 - Image Recognizer. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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 some embodiments of this application, but not all embodiments.

[0041] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0042] As described in the background section, the use of a thread perpendicularity gauge to detect the perpendicularity of a threaded hole in related technologies may result in inaccurate detection results. The inventors have discovered that this problem arises because the threaded hole to be tested may inherently contain errors due to manufacturing limitations. This causes the threaded section of the thread perpendicularity gauge to not perfectly match the hole after being screwed in, resulting in the gauge wobbling within the hole. Consequently, neither measuring the gap between the main surface of the gauge and the plane of the threaded hole, nor measuring the side surface of the gauge, can objectively reflect the perpendicularity of the threaded hole.

[0043] In view of this, the embodiments of this application aim to provide a thread hole perpendicularity detection device and detection method. By abutting a thread detection rod against the thread hole to be detected, the rotation profile of the thread detection rod when rotating inside the thread hole is obtained, thereby fitting the rotation axis; and the machining plane of the thread hole to be detected is obtained. The perpendicularity of the thread hole to be detected is obtained according to the angle between the rotation axis and the machining plane of the thread hole to be detected. Therefore, the detection results will not be affected by the shaking of the thread detection rod inside the thread hole, which helps to reduce the error of thread hole perpendicularity detection and improve the accuracy of the detection results.

[0044] The embodiments of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can gain a more detailed understanding of the contents of this application.

[0045] Figure 1 A simplified structural diagram of a thread hole perpendicularity detection device provided in an embodiment of this application; Figure 2 This is a schematic diagram illustrating the detection principle of a threaded hole perpendicularity detection device provided in an embodiment of this application.

[0046] Please refer to Figures 1-2 This embodiment provides a thread hole perpendicularity detection device, including a thread detection rod 100, a drive device 200, a photoelectric detector 300, an image recognizer 400, and a processor (not shown in the figure). The drive device 200, the photoelectric detector 300, and the image recognizer 400 are all communicatively connected to the processor.

[0047] Specifically, the thread testing rod 100 includes a testing part 110 and a measuring part 120. The diameter of the testing part 110 is larger than the diameter of the measuring part 120. The measuring part 120 is used to screw into the thread hole 11 to be tested. In use, at least one of the testing part 110 and the measuring part 120 can abut against the thread hole 11 to be tested.

[0048] The drive device 200 is connected to the detection unit 110. The drive device 200 is used to drive the thread detection bar 100 to rotate in the thread hole 11 to be detected.

[0049] A photoelectric detector 300 is used to acquire the machining plane 10 of the threaded hole 11 to be inspected. Exemplarily, the photoelectric detector 300 can fit the machining plane 10 by acquiring multiple points within the plane where the threaded hole 11 is located that are not on the same straight line. An image recognizer 400 is used to acquire the rotation profile 12 of the thread detection rod 100 as it rotates within the threaded hole 11 to be inspected. A processor is used to fit a rotation axis 13 based on the rotation profile 12 and to acquire the perpendicularity of the threaded hole 11 to be inspected based on the angle between the rotation axis 13 and the machining plane 10. Exemplarily, if the rotation axis 13 is perpendicular to the machining plane 10, it indicates that the perpendicularity of the threaded hole 11 to be inspected is good; if the rotation axis 13 is not perpendicular to the machining plane 10, it indicates that the perpendicularity of the threaded hole 11 to be inspected is poor.

[0050] In this embodiment, the rotational profile 12 of the thread detection bar 100 as it rotates within the threaded hole 11 is used to fit the rotation axis 13. The machining plane 10 of the threaded hole 11 is then obtained, and the perpendicularity of the threaded hole 11 is determined based on the angle between the rotation axis 13 and the machining plane 10. This embodiment avoids the impact of the thread detection bar 100's movement within the threaded hole 11 on the detection results, thus reducing errors in threaded hole perpendicularity detection and improving the accuracy of the results.

[0051] Figure 3 This is a simplified structural diagram of a thread detection bar provided in one embodiment of this application. Please refer to... Figure 3 In one possible implementation, the diameter of the measuring section 120 in this embodiment gradually decreases in the direction away from the detection section 110. Specifically, the diameter D1 of the measuring section 120 near the detection section 110 is equal to the stop end size of the thread plug gauge adapted to the threaded hole 11 to be detected, the diameter D2 of the middle part of the measuring section 120 is equal to the go end size of the thread plug gauge adapted to the threaded hole 11 to be detected, and the diameter D3 of the measuring section 120 away from the detection section 110 is equal to the minimum pitch diameter of the go end of the thread plug gauge adapted to the threaded hole 11 to be detected. When the measuring part 120 is screwed into the threaded hole 11 to be tested, since the diameter D3 of the end of the measuring part 120 away from the detection part 110 and the diameter D2 of the middle part of the measuring part 120 are both smaller than the diameter of the threaded hole to be tested, while the diameter D1 of the end of the measuring part 120 close to the detection part 110 is larger than the diameter of the threaded hole to be tested, the threaded hole 11 to be tested will abut between the end of the measuring part 120 close to the detection part 110 and the middle part of the measuring part 120, that is, the thread testing rod 100 abuts against the threaded hole 11 to be tested through the measuring part 120.

[0052] In another possible implementation, the measuring unit 120 may include a first threaded section, a second threaded section and a third threaded section, with the first threaded section disposed close to the detection unit 110, the second threaded section located between the first threaded section and the third threaded section, and the third threaded section disposed away from the detection unit 110.

[0053] The diameter of the first threaded section is equal to the no-go end size of the thread plug gauge that fits the threaded hole 11 to be tested; the diameter of the second threaded section is equal to the go end size of the thread plug gauge that fits the threaded hole 11 to be tested; and the diameter of the third threaded section is equal to the minimum pitch diameter of the go end of the thread plug gauge that fits the threaded hole 11 to be tested. When the measuring part 120 is screwed into the threaded hole 11 to be tested, since the diameters of the third threaded section and the second threaded section are both smaller than the diameter of the threaded hole to be tested, while the diameter of the first threaded section is larger than the diameter of the threaded hole to be tested, the threaded hole 11 to be tested will abut between the first threaded section and the second threaded section. That is, the thread testing rod 100 abuts against the threaded hole 11 to be tested through the measuring part 120.

[0054] Figure 4 A simplified structural diagram of a thread detection bar provided in another embodiment of this application. Please refer to... Figure 4 In another possible implementation, the diameter D of the measuring part 120 in this embodiment is equal to the through end size of the thread plug gauge that is adapted to the threaded hole 11 to be tested. When the measuring part 120 is screwed into the threaded hole 11 to be tested, since the diameter of the measuring part 120 is smaller than the diameter of the threaded hole 11 to be tested, the measuring part 120 will be completely screwed into the threaded hole 11 to be tested. The thread detection rod 100 abuts against the plane where the threaded hole 11 to be tested is located through the end face of the detection part 110.

[0055] In one possible implementation, the drive device 200 of this embodiment includes a motor 210 and an adapter 220. The end of the detection unit 110 away from the measuring unit 120 is also provided with a connecting part 130. The two ends of the adapter 220 are respectively sleeved on the output shaft of the motor 210 and the connecting part 130. The adapter 220 acts as a coupling, thereby transmitting the power of the motor 210 to the thread detection bar 100.

[0056] For example, the connecting portion 130 can be hexagonal prism-shaped to facilitate torque transmission by the motor 210. The adapter 220 can be a flexible head to compensate for pitch deviation (Z direction in the figure) during the machining of the threaded hole 11 to be tested, and can also compensate for deviation of the threaded hole 11 to be tested in the horizontal plane (the plane perpendicular to the Z direction in the figure).

[0057] Furthermore, the drive device 200 in this embodiment is also used to screw the thread detection bar 100 into the thread hole 11 to be detected. The adapter 220 is also provided with a torque sensor, which is communicatively connected to the processor.

[0058] For example, when the drive device 200 drives the thread detection bar 100 to rotate, the thread detection bar 100 can move a distance of one thread pitch in the Z direction for each revolution. The processor can pre-store the standard torque value required when the measuring unit 120 is tightened with the thread hole 11 to be tested. The torque sensor can measure the actual torque value in real time. When the actual torque value reaches the standard torque value, the drive device 200 is controlled to stop screwing the thread detection bar 100 in.

[0059] Figure 5 This is a flowchart illustrating a threaded hole perpendicularity detection method according to an embodiment of this application. Please refer to... Figure 5 This embodiment also provides a method for detecting the perpendicularity of a threaded hole, implemented based on the aforementioned threaded hole perpendicularity detection device. The method includes:

[0060] Step S110: Obtain the machining plane of the threaded hole to be tested and the rotation profile of the thread testing bar in the threaded hole to be tested.

[0061] For example, obtaining the machining plane of the threaded hole to be inspected includes:

[0062] At least three detection rays are emitted toward the plane containing the threaded hole to be inspected, wherein the three detection rays are not on the same straight line.

[0063] The reflected light from the detection light is received, and the processing plane is fitted based on the reflected light.

[0064] Step S120: Fit the rotation axis based on the rotation profile.

[0065] For example, the rotation profile is generally conical, and the axis of the base circle of the rotation profile can be regarded as the fitted rotation axis.

[0066] Step S130: Obtain the perpendicularity of the threaded hole to be inspected based on the angle between the rotation axis and the machining plane.

[0067] For example, if the axis of rotation is perpendicular to the machining plane, it indicates that the perpendicularity of the threaded hole to be tested is good; if the axis of rotation is not perpendicular to the machining plane, it indicates that the perpendicularity of the threaded hole to be tested is poor.

[0068] The method in this embodiment fits the rotation axis by measuring the rotation profile of the thread detection bar as it rotates within the threaded hole to be tested; it also obtains the machining plane of the threaded hole and determines the perpendicularity of the threaded hole based on the angle between the rotation axis and the machining plane. This embodiment avoids the impact of the thread detection bar's movement within the threaded hole on the test results, thus reducing errors in threaded hole perpendicularity testing and improving the accuracy of the test results.

[0069] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0070] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0071] It should be noted that in the description of this application, the terms "first" and "second" are used only for convenience in describing different components and should not be construed as indicating or implying a sequential relationship, relative importance, or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features.

[0072] The embodiments or implementation methods in this application are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0073] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with an embodiment or example that are included in at least one embodiment or example of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A device for detecting the perpendicularity of a threaded hole, characterized in that, It includes a thread detection bar, a drive device, a photoelectric detector, an image recognizer, and a processor, wherein the drive device, the photoelectric detector, and the image recognizer are all communicatively connected to the processor; The thread detection bar includes a detection part, a measuring part, and a connecting part. The connecting part is disposed at the end of the detection part opposite to the measuring part, and the measuring part abuts against the thread hole to be detected; and / or, the end face of the detection part abuts against the plane where the thread hole to be detected is located; the driving device includes a motor and an adapter, and the two ends of the adapter are respectively sleeved on the output shaft of the motor and the connecting part. The driving device is used to drive the thread detection bar to rotate within the thread hole to be detected; wherein, the adapter is a flexible head, used to compensate for the pitch deviation of the thread hole to be detected and the deviation in the horizontal plane; The photodetector is used to acquire the machining plane of the threaded hole to be detected; the image recognizer is used to acquire the rotation profile of the thread detection bar when it rotates in the threaded hole to be detected; the processor is used to fit the rotation axis based on the rotation profile and acquire the perpendicularity of the threaded hole to be detected according to the angle between the rotation axis and the machining plane.

2. The thread hole perpendicularity detection device according to claim 1, characterized in that, The diameter of the measuring part gradually decreases in the direction away from the detection part; The diameter of the measuring part near the detection part is equal to the stop end size of the thread plug gauge that is adapted to the thread hole to be tested; the diameter of the middle part of the measuring part is equal to the go end size of the thread plug gauge that is adapted to the thread hole to be tested; and the diameter of the measuring part away from the detection part is equal to the minimum pitch diameter of the go end of the thread plug gauge that is adapted to the thread hole to be tested. The thread testing rod abuts against the thread hole to be tested through the measuring part.

3. The thread hole perpendicularity detection device according to claim 1, characterized in that, The measuring part includes a first threaded section, a second threaded section, and a third threaded section. The first threaded section is disposed close to the detection part, the second threaded section is located between the first threaded section and the third threaded section, and the third threaded section is disposed away from the detection part. The diameter of the first threaded section is equal to the stop end size of the thread plug gauge that is adapted to the threaded hole to be tested; the diameter of the second threaded section is equal to the go end size of the thread plug gauge that is adapted to the threaded hole to be tested; and the diameter of the third threaded section is equal to the minimum pitch diameter of the go end of the thread plug gauge that is adapted to the threaded hole to be tested. The thread testing rod abuts against the threaded hole to be tested through the measuring part.

4. The threaded hole perpendicularity detection device according to claim 1, characterized in that, The diameter of the measuring part is equal to the swivel end size of the thread plug gauge that is adapted to the threaded hole to be tested, and the thread testing rod abuts against the plane where the threaded hole to be tested is located through the end face of the testing part.

5. The thread hole perpendicularity testing device according to any one of claims 2-4, characterized in that, The drive device is also used to screw the thread detection bar into the thread hole to be detected.

6. The threaded hole perpendicularity detection device according to claim 5, characterized in that, The adapter is also equipped with a torque sensor, which is communicatively connected to the processor.

7. A method for detecting the perpendicularity of a threaded hole, implemented based on the threaded hole perpendicularity detection device according to any one of claims 1-6, characterized in that, include: Obtain the machining plane of the threaded hole to be tested and the rotational profile of the thread testing rod within the threaded hole to be tested; The rotation axis is fitted based on the rotation profile; The perpendicularity of the threaded hole to be tested is obtained based on the angle between the rotation axis and the machining plane.

8. The method for detecting the perpendicularity of a threaded hole according to claim 7, characterized in that, The process of obtaining the machining plane of the threaded hole to be detected includes: At least three detection rays are emitted toward the plane containing the threaded hole to be detected, wherein the three detection rays are not on the same straight line; Receive the reflected light from the detected light; The processing plane is fitted based on the reflected light.

Images