Adapter and three-dimensional scanning system

Abstract

The utility model discloses an adapter which is used for measuring parameters of a hole site in three-dimensional scanning and comprises an adapter body and a measuring piece. The adaptive main body is provided with a containing groove, and a groove opening and a groove bottom of the containing groove are distributed in a preset direction; the measuring piece is movably connected into the containing groove and can move in the preset direction relative to the containing groove. The measuring piece comprises a fixing part, the fixing part is used for fixing the adapter relative to the hole site, at least part of the fixing part is located outside the containing groove, and the diameter of the fixing part is gradually reduced in the direction from the groove bottom to the groove opening of the containing groove. Through the arrangement, the efficiency and the precision of measuring the hole position parameters by the adapter can be improved.

Description

Technical Field

[0001] This application relates to the field of 3D scanning equipment technology, and in particular to an adapter and a 3D scanning system. Background Technology

[0002] After a workpiece with holes is manufactured, the parameters of the holes need to be measured to verify whether the manufactured workpiece meets the standards. Currently, this is generally achieved by scanning the point cloud data of the workpiece with a 3D scanning device and reconstructing the geometric features of the workpiece by fitting the point cloud data, thereby measuring the parameters of the holes; alternatively, a contact coordinate measuring machine can be used, where its measuring probe contacts the workpiece to measure feature points on the workpiece surface, thereby fitting the required geometric features of the workpiece to measure the parameters of the holes. However, the above methods of measuring hole parameters require specialized measuring equipment, and the operation of such equipment is relatively complex, thus reducing the efficiency of measuring hole parameters. Furthermore, during the above methods of measuring hole parameters, it is necessary to collect as much data as possible from different locations of the holes; if the data is insufficient, it will affect the accuracy of the measured hole parameters.

[0003] Therefore, improving the efficiency and accuracy of measuring borehole parameters is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this application is to provide an adapter and a 3D scanning system that can improve the efficiency and accuracy of measuring borehole parameters.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] An adapter is disclosed for measuring parameters of a hole position in 3D scanning. The adapter includes an adapter body and a measuring component. The adapter body has a receiving groove with its opening and bottom distributed along a preset direction. The measuring component is movably connected within the receiving groove and is capable of moving relative to the receiving groove along the preset direction. The measuring component includes a fixing part for fixing the adapter relative to the hole position. The fixing part is at least partially located outside the receiving groove, and its diameter gradually decreases along the direction from the bottom to the opening of the receiving groove.

[0007] Furthermore, the fixing part is a conical structure or a frustum structure, and the outer diameter of the end of the fixing part away from the receiving groove is the smallest.

[0008] Furthermore, the adapter includes an elastic element that can elastically deform along a preset direction, and the measuring element is connected to the bottom of the receiving groove through the elastic element.

[0009] Furthermore, the measuring component includes a connecting part, which is movably connected to the receiving groove. The connecting part and the fixing part are integrally formed, and the connecting part fits against the inner wall of the receiving groove. The connecting part is connected to the bottom of the receiving groove through an elastic element.

[0010] Furthermore, the adapter includes a main body and a weight-reducing part, both of which are distributed along a preset direction, defining a projection plane perpendicular to the preset direction. The area of ​​the orthographic projection of the main body on the projection plane is greater than the area of ​​the orthographic projection of the weight-reducing part on the projection plane.

[0011] Furthermore, the orthographic projection of the receiving groove on the projection plane is located within the orthographic projection of the weight-reducing part on the projection plane, and the area of ​​the orthographic projection of the receiving groove on the projection plane is smaller than the area of ​​the orthographic projection of the weight-reducing part on the projection plane.

[0012] Furthermore, the opening of the receiving groove is located in the weight reduction section or the main body section.

[0013] Furthermore, the adapter also includes a marker point located at a preset position relative to the adapter body, the marker point being located on the adapter body or detachably connected to the adapter body.

[0014] Furthermore, the adapter body includes a contact surface and a marking surface. The marking surface and the contact surface are not coplanar. The opening of the receiving groove is opened on the contact surface, and the marking point is located on the marking surface or can be detachably connected to the marking surface.

[0015] A three-dimensional scanning system includes the adapter described above.

[0016] The aforementioned adapter, by placing the measuring component into the workpiece hole, allows the end of the measuring component near the receiving groove to move along a predetermined direction within the groove until the end of the fixing part opposite to the bottom of the groove can stably abut against the workpiece hole. This allows the measuring component to fix the adapter relative to the workpiece hole, preventing the adapter from shaking when measuring the parameters of the workpiece hole and thus improving the accuracy of the adapter in measuring the workpiece hole parameters. Simultaneously, when the measuring component fixes the adapter relative to the workpiece hole, the position of the hole's central axis can be obtained by measuring the position of the measuring component's central axis, thereby improving the efficiency of the adapter in measuring the workpiece hole parameters. Attached Figure Description

[0017] Figure 1 This is a structural diagram of the adapter provided in an embodiment of this application.

[0018] Figure 2 A cross-sectional view of the adapter provided in an embodiment of this application.

[0019] Figure 3 This is a structural diagram of the first measuring device provided in the embodiments of this application.

[0020] Figure 4This is a structural diagram of the second measuring device provided in an embodiment of this application.

[0021] Figure 5 A front view of a first adapter provided in an embodiment of this application.

[0022] Figure 6 A front view of a second adapter provided in an embodiment of this application.

[0023] Figure 7 This is a structural diagram of the three-dimensional scanning system provided in an embodiment of this application. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present application, the technical solutions in specific embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0025] It should be noted that the terms "first," "second," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "a" or "one," and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. "A plurality" or "several" indicates at least two. Unless otherwise stated, terms such as "front," "back," "left," "right," "lower," and / or "upper" are for illustrative purposes only and are not limited to a location or spatial orientation. Terms such as "comprising" or "including" indicate that the elements or objects preceding "comprising" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0026] The singular forms “a,” “the,” and “the” used in this application specification and appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0027] To clearly illustrate the technical solution of this application, the following are also defined: Figure 1 The front, back, left, right, top, and bottom are shown to indicate the front, back, left, right, top, and bottom of adapter 100.

[0028] like Figure 1 and Figure 2As shown, this application provides an adapter 100 for measuring parameters of a hole position in 3D scanning. The adapter 100 includes an adapter body 11 and a measuring element 12. The adapter body 11 is the main structure of the adapter 100 and supports the measuring element 12. The measuring element 12 is connected to the adapter body 11 and can be fixed within the hole position to be measured, thus fixing the relative position of the adapter body 11 and the hole position.

[0029] Specifically, the adapter body 11 has a receiving groove 111, with the groove opening 1111 and the groove bottom 1112 distributed along a preset direction 101. The measuring element 12 is movably connected within the receiving groove 111 and can move relative to the receiving groove 111 along the preset direction 101. With this configuration, after the measuring element 12 is placed into the workpiece hole, the end of the measuring element 12 near the receiving groove 111 moves along the preset direction 101 within the receiving groove 111 until the end of the measuring element 12 away from the receiving groove 111 can firmly abut against the inner wall of the workpiece hole. This allows the measuring element 12 to fix the relative position of the adapter 100 and the hole, thereby preventing the adapter 100 from shaking when measuring the parameters of the hole and improving the accuracy of the adapter 100's measurement of the hole parameters.

[0030] Furthermore, the measuring element 12 is at least partially cylindrical. After the measuring element 12 is placed into the workpiece hole and the relative positions of the adapter 100 and the hole are fixed, the central axis of the measuring element 12 is basically coincident with the central axis of the workpiece hole. The position of the central axis of the hole can be confirmed by the position of the central axis of the measuring element 12, which is conducive to confirming the relative position of the hole in the workpiece. This facilitates the acquisition of the parameters of the workpiece hole and improves the efficiency of the adapter 100 in measuring the parameters of the workpiece hole.

[0031] It should be noted that the connection method between the measuring element 12 and the receiving groove 111 is not limited in this application, as long as the measuring element 12 can move relative to the receiving groove 111 along the preset direction 101.

[0032] More specifically, the measuring element 12 includes a fixing part 121, which is at least partially located outside the receiving groove 111. The fixing part 121 is used to fix the adapter 100 relative to the hole position. The diameter of the fixing part 121 gradually decreases along the direction from the bottom 1112 of the receiving groove 111 to the opening 1111. With the above arrangement, the fixing part 121 has multiple cross-sectional diameters in a preset direction 101, so that the measuring element 12 can be placed into workpiece holes of different diameters, thereby improving the adaptability of the adapter 100 to measure the workpiece hole position parameters.

[0033] It should be noted that a cross-sectional plane 102 perpendicular to the preset direction 101 is defined. The diameter of the cross-section of the fixing part 121 refers to the diameter of the cross-section of the fixing part 121 cut by the cross-sectional plane 102, and the cross-sectional area of ​​the fixing part 121 refers to the area of ​​the cross-section of the fixing part 121 cut by the cross-sectional plane 102.

[0034] For example, such as Figure 3 As shown, the fixing part 121 can be a frustum structure, with the outer diameter of the end of the fixing part 121 facing away from the receiving groove 111 being the smallest. With this configuration, compared to the conical fixing part 121, the minimum cross-sectional diameter of the frustum fixing part 121 is much larger. Therefore, during the process of placing the measuring piece 12 into the workpiece hole, the frustum fixing part can abut against the inner wall of the workpiece hole more quickly, thereby improving the contact efficiency between the fixing part 121 and the inner wall of the workpiece hole, and further improving the efficiency of the adapter 100 in measuring the parameters of the workpiece hole.

[0035] For example, such as Figure 4 As shown, the fixing part 121 can be a conical structure, with the outer diameter of the end of the fixing part 121 facing away from the receiving groove 111 being the smallest. With the above arrangement, compared to the truncated cone structure fixing part 121, the minimum cross-sectional area of ​​the conical structure fixing part 121 is close to zero, much smaller than the minimum cross-sectional area of ​​the truncated cone structure fixing part 121. Therefore, the conical structure fixing part 121 can accommodate workpiece holes with smaller diameters, thereby increasing the range of workpiece hole diameters that the measuring element 12 can adapt to, and improving the adaptability of the adapter 100 in measuring the parameters of the workpiece hole.

[0036] like Figure 2 As shown, in one embodiment, the adapter 100 includes an elastic element 13, which is capable of elastic deformation along a preset direction 101. The measuring element 12 is connected to the bottom 1112 of the receiving groove 111 via the elastic element 13. With this configuration, the end of the fixing part 121 near the bottom 1112 is connected to the elastic element 13. When the end of the fixing part 121 away from the bottom 1112 contacts the inner wall of the workpiece hole, the measuring element 12 moves towards the bottom 1112 along the preset direction 101, thereby squeezing the elastic element 13. This causes the elastic element 13 to apply a force on the fixing part 121 in a direction opposite to the direction of movement of the measuring element 12. This improves the stability of the contact between the end of the fixing part 121 away from the bottom 1112 and the inner wall of the workpiece hole, facilitating the fixing of the relative position of the adapter 100 and the workpiece hole by the measuring element 12, thereby improving the accuracy of the parameters of the measuring hole measured by the adapter 100.

[0037] In this application, the elastic element 13 can be a spring. When the fixing part 121 moves towards the bottom of the groove 1112 along the preset direction 101, the spring will be compressed, thereby causing the spring to generate a rebound force and apply it to the measuring element 12. This helps to fix the relative position of the adapter 100 and the workpiece hole of the measuring element 12, thereby preventing the adapter 100 from shaking during the measurement of the hole parameters, and thus improving the accuracy of the adapter 100 in measuring the hole parameters.

[0038] It should be noted that this application does not impose any restrictions on the material and structure of the elastic element 13, only requiring that the elastic element 13 can undergo elastic deformation along the preset direction 101.

[0039] like Figure 2 As shown, in one embodiment, the measuring element 12 includes a connecting portion 122, which is movably connected to the receiving groove 111. The connecting portion 122 is integrally formed with the fixing portion 121, and the connecting portion 122 fits against the inner wall of the receiving groove 111. The connecting portion 122 is connected to the bottom 1112 of the receiving groove 111 via an elastic member 13. In this application, the connecting portion 122 is a cylindrical structure, and the receiving groove 111 is a circular groove structure; alternatively, the connecting portion 122 is a cuboid structure, and the receiving groove 111 is a square groove structure. This application does not impose any limitations.

[0040] Taking the connecting part 122 as a cylindrical structure and the receiving groove 111 as a circular groove structure as an example, the following explanation is provided. A cross-sectional plane 102 perpendicular to the preset direction 101 is defined. The cross-section of the connecting part 122 cut by the cross-sectional plane 102 is called the connecting cross-section, and the cross-section of the receiving groove 111 cut by the cross-sectional plane 102 is called the receiving cross-section. Through this setting, the diameter of the connecting cross-section and the diameter of the receiving cross-section are basically the same. This allows the connecting part 122 to move along the preset direction 101 within the receiving groove 111, while also preventing the connecting part 122 from shaking within the receiving groove 111. This avoids shaking of the adapter 100 during the measurement of hole position parameters, thereby improving the accuracy of the adapter 100 in measuring the hole position parameters.

[0041] like Figure 5 As shown, in one embodiment, the adapter body 11 includes a main body 112 and a weight-reducing part 113. The main body 112 and the weight-reducing part 113 are distributed along a preset direction 101, defining a projection plane 103 perpendicular to the preset direction 101. The area of ​​the orthographic projection of the main body 112 onto the projection plane 103 is larger than the area of ​​the orthographic projection of the weight-reducing part 113 onto the projection plane 103. Through the above arrangement, the volume of the adapter body 11 can be reduced by the weight-reducing part 113, thereby reducing the weight of the adapter body 11, achieving lightweighting of the adapter 100, and reducing the cost of the adapter 100.

[0042] In one embodiment, the orthographic projection of the receiving groove 111 on the projection plane 103 lies within the orthographic projection of the weight-reducing part 113 on the projection plane 103, and the area of ​​the orthographic projection of the receiving groove 111 on the projection plane 103 is smaller than the area of ​​the orthographic projection of the weight-reducing part 113 on the projection plane 103. Through this arrangement, the area of ​​the orthographic projection of the receiving groove 111 on the projection plane 103 is smaller than the area of ​​the orthographic projection of the weight-reducing part 113 on the projection plane 103, thereby preventing the receiving groove 111 from penetrating the side surface of the weight-reducing part 113, and preventing the measuring member 12 from falling out of the receiving groove 111 when moving along the preset direction 101 within the receiving groove 111, thereby improving the stability of the parameters of the measuring hole position of the adapter 100.

[0043] For example, as one implementation, the slot 1111 of the receiving groove 111 can be formed in the weight reduction part 113, at which time the weight reduction part 113 is in contact with the surface where the hole of the workpiece is located.

[0044] For example, such as Figure 6 As shown, the slot 1111 of the receiving groove 111 can be opened in the body part 112, at which time the body part 112 is in contact with the surface where the hole of the workpiece is located.

[0045] It should be noted that this application does not restrict the location of the slot 1111 of the receiving slot 111.

[0046] like Figure 1 As shown, in one embodiment, the adapter 100 also includes a marker point 14 positioned relative to the adapter body 11 at a preset location. In this application, a mapping relationship between the marker point 14 and the central axis of the measuring component 12 is pre-stored in a database. It should be noted that when the connecting part 122 is a cylindrical structure, the central axis of the fixing part 121 coincides with the central axis of the connecting part 122. In this case, the central axis of the measuring component 12 is either the central axis of the fixing part 121 or the central axis of the connecting part 122. When the connecting part 122 has other structures, the central axis of the measuring component 12 is the central axis of the fixing part 121. Through the above settings, the position of the marker point 14 is obtained using a three-dimensional scanning device. Then, based on the mapping relationship between the marker point 14 and the central axis of the measuring component 12, the axial position of the workpiece hole can be obtained, thereby obtaining the hole parameters and improving the efficiency of the adapter 100 in measuring hole parameters. In this application, the three-dimensional scanning device can be a monocular camera or a multi-view camera, and no limitation is made here.

[0047] Specifically, the marker point 14 is located on or detachably connected to the adapter body 11. With this configuration, depending on the requirements of the measured hole position parameters, the marker point 14 can be directly set on the adapter body 11, or the marker point 14 can be set on the detachable component, and then the detachable component can be fixed to the adapter body 11. This avoids the 3D scanning device being unable to accurately obtain the position of the marker point 14, thereby improving the accuracy of the adapter 100 in measuring the hole position parameters. In this application, after the marker point 14 is fixed to the detachable component, the connection method between the detachable component and the adapter body 11 can be a plug-in connection.

[0048] It should be noted that this application does not restrict the connection method between the marker point 14 and the adapter body 11, as long as the connection between the marker point 14 and the adapter body 11 is satisfied.

[0049] like Figure 5 As shown, in one embodiment, the adapter body 11 includes a contact surface 114 and a marking surface 115. The marking surface 115 and the contact surface 114 are not coplanar. The slot 1111 of the receiving groove 111 is formed on the contact surface 114. After the measuring element 12 is placed into the hole of the workpiece, the contact surface 114 will be in contact with the surface where the hole of the workpiece is located. The marking point 14 is located on the marking surface 115 or is detachably connected to the marking surface 115. With the above arrangement, the marking point 14 can be avoided from being blocked after the contact surface 114 is in contact with the surface where the hole of the workpiece is located. This allows the measuring element 12 to improve the rate at which the 3D scanning device acquires the marking point data after being placed into the hole of the workpiece at different positions, thereby improving the efficiency of the adapter 100 in measuring the parameters of the hole.

[0050] It should be noted that this application does not restrict the position of the marker point 14, as long as the marker surface 115 and the contact surface 114 are not coplanar.

[0051] like Figure 7 As shown, this application also provides a three-dimensional scanning system 200, which includes an adapter 100. With the above configuration, the three-dimensional scanning system 200 can measure the parameters of a hole position through the adapter 100, thereby improving the efficiency and accuracy of the adapter 100 in measuring the hole position parameters.

[0052] In this application, when measuring the parameters of the hole position using the 3D scanning system 200:

[0053] First, the marker point data of several marker points 14 are bound to the type of adapter 100. The marker point data includes identification data and positioning data; the identification data is used to bind to the type of adapter 100, and the positioning data is used to obtain the spatial position of the marker points 14. Since the adapter 100 of this application includes a measuring element 12, the mapping relationship between the central axis position of the measuring element 12 and the spatial position of the marker points 14 needs to be obtained first by scanning with a 3D scanning system 200. Then, the mapping relationship between the central axis position of the measuring element 12 and the spatial position of the marker points 14, the type of adapter 100, and the marker point data of the marker points 14 are all stored in a database to facilitate subsequent retrieval by the 3D scanning system 200 during the measurement of hole position parameters. The central axis position of the measuring element 12 is the same as the central axis position of the fixing part 121.

[0054] Secondly, since this application measures hole position parameters, the feature to be measured is a hole position, meaning the type of feature to be measured obtained in this application is a hole position. The 3D scanning system 200 acquires the marker point data of marker point 14 to obtain the mapping relationship between the central axis of the measuring component 12 and marker point 14 from the database. Then, the measuring component 12 is placed into the hole position of the workpiece, so that the connecting part 122 moves along the preset direction 101 in the receiving groove 111 until the end of the fixing part 121 facing away from the receiving groove 111 abuts against the inner wall of the hole position, thereby making the measuring component 12 and the hole position on the workpiece mutually engaged and fixed. After completing the above steps, the central axis of the measuring component 12 and the central axis of the hole position are basically coincident. At this time, the mapping relationship between the central axis of the measuring component 12 and marker point 14 can be obtained through the marker point data of marker point 14 of the 3D scanning device, and thus the position of the central axis of the hole position can be obtained.

[0055] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An adapter for measuring parameters of a hole site in a three-dimensional scanning, characterized in that, the adapter comprises: an adapter body, the adapter body is provided with a receiving groove, the groove opening and groove bottom of the receiving groove are distributed along a preset direction; a measuring piece, the measuring piece is movably connected in the receiving groove, the measuring piece can move along the preset direction relative to the receiving groove, the measuring piece comprises a fixing part for fixing the adapter relative to the hole site, the fixing part is at least partially located outside the receiving groove, along the direction from the groove bottom to the groove opening of the receiving groove, the diameter of the fixing part gradually decreases.

2. The adapter according to claim 1, characterized in that, the fixing part is a conical structure or a circular truncated cone structure, the outer diameter of the end of the fixing part away from the receiving groove is the smallest.

3. The adapter according to claim 1 or 2, characterized in that, the adapter comprises an elastic piece, the elastic piece can be elastically deformed along the preset direction, the measuring piece and the groove bottom of the receiving groove are connected through the elastic piece.

4. The adapter according to claim 3, characterized in that, the measuring piece comprises a connecting part movably connected with the receiving groove, the connecting part is integrally formed with the fixing part, the connecting part is in close contact with the inner wall of the receiving groove; the connecting part and the groove bottom of the receiving groove are connected through the elastic piece.

5. The adapter according to claim 1, characterized in that, the adapter body comprises a body part and a weight-reducing part distributed along the preset direction, a projection plane perpendicular to the preset direction is defined, the area of the orthogonal projection of the body part on the projection plane is greater than the area of the orthogonal projection of the weight-reducing part on the projection plane.

6. The adapter according to claim 5, characterized in that, the orthogonal projection of the receiving groove on the projection plane is located in the orthogonal projection of the weight-reducing part on the projection plane, and the area of the orthogonal projection of the receiving groove on the projection plane is smaller than the area of the orthogonal projection of the weight-reducing part on the projection plane.

7. The adapter according to claim 5, characterized in that, the groove opening of the receiving groove is provided on the weight-reducing part or the body part.

8. The adapter according to claim 1, characterized in that, the adapter further comprises a mark point in a preset position relative to the adapter body, the mark point is located on the adapter body or detachably connected with the adapter body.

9. The adapter according to claim 8, characterized in that, the adapter body comprises a contact surface and a mark surface, the mark surface is not coplanar with the contact surface, the groove opening of the receiving groove is provided on the contact surface, and the mark point is located on the mark surface or detachably connected with the mark surface.

10. A three-dimensional scanning system, characterized in that, the three-dimensional scanning system comprises the adapter according to any one of claims 1 to 9.

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