Auxiliary measuring device of laser tracker

Abstract

The utility model provides an auxiliary measuring device of a laser tracker, which is used for measuring a pin, the top surface of the auxiliary measuring device is provided with a groove for placing a target ball, the bottom surface of the auxiliary measuring device is provided with a matching groove, and the auxiliary measuring device is suitable for being sleeved on the top of the pin, so that the bottom wall of the matching groove is attached to a measuring plane; the auxiliary measuring device is provided with an extension plate, the extension plate extends in the horizontal direction, an auxiliary plane suitable for supporting the target ball is formed on the extension plate, and the auxiliary plane and the bottom wall of the matching groove are coplanar. According to the auxiliary measuring device of the laser tracker, the auxiliary plane of the extension plate and the measuring plane are arranged in the same plane, and the position of the measuring plane is measured by measuring the auxiliary plane of the extension plate, so that the measuring plane can be accurately positioned conveniently, the measuring efficiency and the measuring accuracy can be effectively improved, and meanwhile, the measuring precision is improved. And the universality of the measuring pin of the laser tracker can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of manufacturing an auxiliary measuring device of a laser tracker, in particular to an auxiliary measuring device of a laser tracker. Background Art

[0002] During the vehicle manufacturing process, the various sub-assemblies of the body-in-white need to be welded. Before welding production, the various sub-assemblies of the body-in-white need to be fixed on the tooling fixture, and then the pins are fixed in a certain position. After the accurate pin positioning is measured by the laser tracker, the body-in-white is positioned by the pins, and then the various sub-assemblies of the body-in-white are welded.

[0003] In the existing solution, when a laser tracker is used to measure a pin, a target ball is placed on the measuring plane of the pin, and the measuring plane of the pin is measured by the position of the target ball. However, when the measuring plane of the pin is narrow and the measuring target ball cannot be placed normally, this will cause a large error between the measured measuring plane and the actual one, thereby affecting the positioning of the pin. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a laser tracker-assisted measurement device, which can improve the measurement accuracy.

[0005] According to the laser tracker auxiliary measuring device of the embodiment of the utility model, it is used to measure a pin, the pin includes a measuring part and a protruding part, the protruding part is arranged on the upper side of the measuring part, and the diameter of the protruding part is smaller than the diameter of the measuring part, the end face of one end of the measuring part connected to the protruding part forms a measuring plane, the top surface of the auxiliary measuring device is provided with a groove for placing a target ball, the bottom surface of the auxiliary measuring device is provided with a matching groove, the auxiliary measuring device is suitable for being sleeved on the top of the pin so that the bottom wall of the matching groove is in contact with the measuring plane; the auxiliary measuring device has an extension plate, the extension plate extends in the horizontal direction, the extension plate is formed with an auxiliary plane suitable for supporting the target ball, and the auxiliary plane is coplanar with the bottom wall of the matching groove.

[0006] According to the laser tracker-assisted measurement device of the utility model, the auxiliary plane of the extension plate is arranged coplanar with the measurement plane. The position of the measurement plane is measured by measuring the auxiliary plane of the extension plate, which can facilitate accurate positioning of the measurement plane, thereby effectively improving the measurement efficiency and measurement accuracy. At the same time, it can also improve the versatility of the laser tracker in measuring pins.

[0007] According to some embodiments of the utility model, the auxiliary measuring device includes a sleeve and a top cover, the top cover is arranged on the upper side of the sleeve, the groove is arranged on the upper side of the top cover, a through hole is formed in the sleeve for the protrusion to extend into, the lower end surface of the sleeve is provided with the matching groove, the matching groove penetrates the peripheral wall of the through hole along the radial direction of the sleeve, and the extension plate is connected to the lower end of the sleeve.

[0008] According to some optional embodiments of the present invention, the lower surface of the extension plate is flush with the lower end surface of the sleeve.

[0009] According to some embodiments of the present invention, the extension plate extends along the outer circumference of the sleeve to form an arc-shaped plate.

[0010] According to some embodiments of the utility model, the inner wall of the sleeve is provided with an elastic positioning structure, the number of the elastic positioning structures is multiple, and the multiple elastic positioning structures are evenly spaced along the peripheral wall of the sleeve, and the elastic positioning structure is suitable for abutting against the protrusion in the radial direction of the sleeve to position the protrusion so that the pin is coaxial with the sleeve.

[0011] According to some optional embodiments of the utility model, the elastic positioning structure includes: a pin shaft and an elastic member, the pin shaft extends along the radial direction of the sleeve, the elastic member is connected between the sleeve and the pin shaft, and the elastic member is used to push the pin shaft to abut against the outer peripheral wall of the protrusion.

[0012] According to some optional embodiments of the present utility model, a receiving cavity is provided in the pin shaft, and a part of the elastic member is provided in the receiving cavity.

[0013] According to some optional embodiments of the present invention, a mounting hole is formed on the inner wall of the sleeve, the mounting hole extends radially along the sleeve and penetrates the inner wall of the sleeve, the elastic positioning structure corresponds one-to-one to the mounting hole, and at least a portion of the elastic positioning structure is arranged in the mounting hole.

[0014] According to some embodiments of the utility model, the top cover includes a main body and a flange, the main body is a horizontally arranged circular plate, the flange extends downward perpendicular to the main body, and the flange is formed into a ring shape along the circumference of the main body, and the top cover is matched with the sleeve and fixedly connected through the flange.

[0015] According to some optional embodiments of the utility model, a mounting groove is provided at one end of the sleeve facing the top cover, the mounting groove penetrates the outer wall surface of the sleeve and is formed into a ring shape along the circumference of the sleeve, the flange extends into the mounting groove to make the top cover cooperate with the sleeve, the lower end of the flange abuts against the bottom wall of the mounting groove, the inner wall surface of the flange abuts against the side wall of the mounting groove, and the outer wall surface of the flange is flush with the outer wall surface of the sleeve.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the working state of the laser tracker auxiliary measurement device, the pin, the laser tracker and the target ball according to the embodiment of the utility model;

[0018] Figure 2 yes Figure 1 A cross-sectional view of the laser tracker-assisted measurement device and the pin shown in ;

[0019] Figure 3 yes Figure 1 Schematic diagram of the laser tracker-assisted measurement device shown in;

[0020] Figure 4 yes Figure 3 Cross-sectional view of the laser tracker-assisted measurement device shown in .

[0021] Reference numerals:

[0022] 100. Laser tracker auxiliary measurement device;

[0023] 10. sleeve; 11. elastic positioning structure; 111. pin; 112. elastic member; 12. mounting hole; 13. through hole; 14. matching groove;

[0024] 20. Top cover; 21. Main body; 22. Flanged edge; 23. Groove;

[0025] 30. Extension plate; 31. Auxiliary plane;

[0026] 200, pin, 210, measuring portion; 2101, measuring plane; 220, protruding portion;

[0027] 300. Laser tracker;

[0028] 400. Target ball. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0030] Please refer to the following Figure 1-4 A laser tracker-assisted measurement device 100 according to an embodiment of the present invention is described.

[0031] Reference Figure 1 , Figure 2 and Figure 3 According to the laser tracker-assisted measurement device 100 of the embodiment of the utility model, the pin 200 is used to measure the pin 200. The pin 200 includes a measuring portion 210 and a protruding portion 220. The protruding portion 220 is disposed on the upper side of the measuring portion 210 (such as Figure 2 The diameter of the protrusion 220 is smaller than the diameter of the measuring portion 210, and the end of the measuring portion 210 connected to the protrusion 220 (as shown in FIG. Figure 2 The upper end surface of the measuring portion 210 shown is formed as a measuring plane 2101.

[0032] The top surface of the auxiliary measuring device 100 is provided with a groove 23 for placing the target ball 400, and the bottom surface of the auxiliary measuring device 100 is provided with a matching groove 14. The auxiliary measuring device 100 is suitable for being sleeved on the top of the pin 200 so that the bottom wall of the matching groove 14 is in contact with the measuring plane 2101; the auxiliary measuring device 100 has an extension plate 30, which extends in the horizontal direction. An auxiliary plane 31 suitable for supporting the target ball 400 is formed on the extension plate 30, and the auxiliary plane 31 is coplanar with the bottom wall of the matching groove 14.

[0033] For example, Figure 1 , Figure 2 and Figure 3 As shown, the protrusion 220 and the measuring part 210 are both cylindrical, the diameter of the protrusion 220 is smaller than the diameter of the measuring part 210, the lower end of the protrusion 220 is connected to the upper end of the measuring part 210, so that the upper end surface of the measuring part 210 is formed into a circular measuring plane 2101, the top surface of the auxiliary measuring device 100 is provided with a semicircular groove 23, the protrusion 220 of the pin 200 extends into the interior of the auxiliary measuring device 100 and cooperates with the auxiliary measuring device 100, the upper surface of the extension plate 30 forms an auxiliary plane 31, and the auxiliary plane 31, the measuring plane 2101 and the bottom wall of the matching groove 14 are coplanar.

[0034] When using the laser tracker to assist the measuring device 100 to measure the position of the pin 200, the laser tracker 300 is used to measure the center position of the measuring plane 2101 of the pin 200. When measuring the center position of the measuring plane 2101, the auxiliary measuring device 100 is firstly sleeved on the top of the pin 200, and the measuring plane 2101 needs to be abutted against the bottom wall of the matching groove 14, so that the auxiliary plane 31, the measuring plane 2101 and the bottom wall of the matching groove 14 are coplanar, and then the target ball 400 is placed on the auxiliary plane 31, and the position of the measuring plane 2101 is measured by the auxiliary plane 31. Finally, the target ball 400 is placed in the groove 23, so as to measure the center position of the measuring plane 2101.

[0035] The laser tracker auxiliary measurement device 100 of the utility model sets the auxiliary plane 31 of the extension plate 30 and the measurement plane 2101 in the same plane, and measures the position of the measurement plane 2101 by measuring the auxiliary plane 31 of the extension plate 30, so that the measurement plane 2101 can be conveniently positioned, thereby effectively improving the measurement efficiency and measurement accuracy. When the measurement plane 2101 is narrow and it is difficult to place the target ball 400 on the measurement plane 2101 to accurately position the measurement plane 2101, the measurement plane 2101 can be expanded by the auxiliary plane 31, so that the position of the measurement plane 2101 can be accurately positioned, and the position of the measurement plane 2101 can be accurately measured for different types of pins 200, thereby improving the versatility of the laser tracker 300 in measuring the pins 200. In addition, compared with the solution in the prior art that three points need to be measured on the measurement plane 2101 to fit the measurement plane 2101, the present embodiment only needs to measure once on the auxiliary plane 31 to obtain the accurate position of the measurement plane 2101, thereby further improving the measurement efficiency.

[0036] According to the laser tracker-assisted measurement device 100 of the embodiment of the utility model, the auxiliary plane 31 of the extension plate 30 is arranged coplanar with the measurement plane 2101. The position of the measurement plane 2101 is measured by measuring the auxiliary plane 31 of the extension plate 30, which can facilitate the accurate positioning of the measurement plane 2101, thereby effectively improving the measurement efficiency and measurement accuracy. At the same time, it can also improve the versatility of the laser tracker 300 in measuring the pin 200.

[0037] According to some embodiments of the present invention, referring to Figure 3 and Figure 4 The auxiliary measuring device 100 includes a sleeve 10 and a top cover 20. The top cover 20 is disposed on the upper side of the sleeve 10. The groove 23 is disposed on the upper side of the top cover 20 (eg Figure 3The sleeve 10 is provided with a through hole 13 into which the protrusion 220 can extend, and the lower end surface of the sleeve 10 is provided with a matching groove 14, which penetrates the peripheral wall of the through hole 13 along the radial direction of the sleeve 10. The extension plate 30 is connected to the lower end of the sleeve 10 (as shown in FIG. Figure 3 The lower end of the sleeve 10 is shown).

[0038] The top cover 20 can provide a setting position for the groove 23, which can facilitate the setting of the groove 23. At the same time, the protrusion 220 can extend into the through hole 13, so as to facilitate the connection between the auxiliary measuring device 100 and the pin 200. Furthermore, the matching groove 14 can facilitate the matching of the measuring part 210 of the pin 200 with the auxiliary measuring device 100, and can also make the measuring plane 2101 coplanar with the bottom wall of the matching groove 14, thereby making the measuring plane 2101 coplanar with the auxiliary plane 31.

[0039] For example, Figure 3 and Figure 4 As shown, the top cover 20 is arranged on the upper side of the sleeve 10, the groove 23 is arranged at the center position of the top cover 20, the sleeve 10 is a hollow cylindrical shape, and a cylindrical through hole 13 extending in the up and down directions is formed in the sleeve 10, and a cylindrical matching groove 14 is formed at the lower end of the sleeve 10, and the matching groove 14 is connected with the through hole 13. In this way, when the measuring plane 2101 of the measuring part 210 abuts against the bottom wall of the matching groove 14, the protrusion 220 can extend into the through hole 13.

[0040] According to some optional embodiments of the present invention, referring to Figure 3 and Figure 4 The lower surface of the extension plate 30 is flush with the lower end surface of the sleeve 10. Therefore, when the protrusion 220 extends into the through hole 13, the measuring plane 2101 can abut against the bottom wall of the matching groove 14, and at the same time, the aesthetics of the auxiliary measuring device 100 can be ensured.

[0041] According to some embodiments of the present invention, referring to Figure 3 , the extension plate 30 extends along the outer circumference of the sleeve 10 to form an arc-shaped plate. Therefore, this structural arrangement is reasonable and convenient for placing the target ball 400. For example, Figure 3 As shown, the extension plate 30 extends along the outer circumference of the sleeve 10 to form a semicircular arc-shaped plate.

[0042] According to some embodiments of the present invention, referring to Figure 3 and Figure 4The inner wall of the sleeve 10 is provided with an elastic positioning structure 11, and the number of the elastic positioning structures 11 is multiple, that is, the number of the elastic positioning structures 11 can be two, three or four or more, and the multiple elastic positioning structures 11 are arranged at equal intervals along the peripheral wall of the sleeve 10. The elastic positioning structure 11 is suitable for abutting against the protrusion 220 in the radial direction of the sleeve 10 to position the protrusion 220 so that the pin 200 is coaxial with the sleeve 10.

[0043] In this way, the multiple elastic positioning structures 11 can ensure the accuracy of positioning. At the same time, the multiple elastic positioning structures 11 are arranged at equal intervals, so as to further improve the positioning accuracy. In addition, the pin 200 is coaxial with the sleeve 10. When the target ball 400 is placed in the groove 23, the laser tracker 300 measures the center of the target ball 400 to measure the center of the measuring plane 2101 of the pin 200, so as to ensure the accuracy of measurement again. For example, Figure 3 and Figure 4 As shown, three elastic positioning structures 11 are provided, and the three elastic positioning structures 11 are evenly arranged on the peripheral wall of the through hole 13 at an angle of 120°.

[0044] According to some optional embodiments of the present invention, referring to Figure 3 and Figure 4 The elastic positioning structure 11 includes: a pin shaft 111 and an elastic member 112 . The pin shaft 111 extends in the radial direction of the sleeve 10 . The elastic member 112 is connected between the sleeve 10 and the pin shaft 111 . The elastic member 112 is used to push the pin shaft 111 to abut against the outer peripheral wall of the protrusion 220 .

[0045] In this way, the pin shaft 111 and the elastic member 112 have a simple structure, low cost, and are easy to use in batches. At the same time, the extension direction of the pin shaft 111 is perpendicular to the extension direction of the protrusion 220, thereby ensuring that the pin shaft 111 can abut against the outer peripheral wall of the protrusion 220.

[0046] For example, Figure 3 and Figure 4 As shown, the pin 111 extends in the radial direction of the sleeve 10, one end of the elastic member 112 is connected to the inner wall of the sleeve 10, and the other end of the elastic member 112 is connected to the pin 111, so that the elastic member 112 can push the pin 111 to abut against the outer peripheral wall of the protrusion 220. Preferably, the elastic member 112 is a spring, which has a simple structure, low cost, and is convenient for mass use.

[0047] According to some optional embodiments of the present invention, referring to Figure 3 and Figure 4A mounting hole 12 is formed on the inner wall of the sleeve 10. The mounting hole 12 extends radially along the sleeve 10 and penetrates the inner wall of the sleeve 10. The elastic positioning structure 11 corresponds to the mounting hole 12 one by one, and at least a portion of the elastic positioning structure 11 is disposed in the mounting hole 12. That is to say, a portion of the elastic positioning structure 11 may be disposed in the mounting hole 12, or the entire elastic positioning structure 11 may be disposed in the mounting hole 12.

[0048] In this way, the mounting hole 12 can provide a placement space for the elastic positioning structure 11, thereby facilitating the placement of the elastic positioning structure 11. At the same time, the mounting hole 12 is arranged in the same direction as the pin shaft 111, thereby ensuring that the pin shaft 111 can abut against the outer peripheral wall of the protrusion 220.

[0049] For example, Figure 3 and Figure 4 As shown, three mounting holes 12 are formed on the inner wall of the sleeve 10 , each mounting hole 12 is provided with an elastic positioning structure 11 , an elastic member 112 is provided in the mounting hole 12 , and part of the pin shaft 111 is provided in the mounting hole 12 .

[0050] According to some embodiments of the present invention, referring to Figure 2 and Figure 3 , a receiving cavity is provided in the pin shaft 111, and a part of the elastic member 112 is provided in the receiving cavity. Thus, the receiving cavity provides a setting space for the elastic member 112, so that the setting of the elastic member 112 can be facilitated, and at the same time, the space occupied by the elastic positioning structure 11 can be reduced, so that the space of the through hole 13 can be guaranteed. Preferably, the pin shaft 111 is cylindrical, so that the pin shaft 111 can be conveniently moved in the mounting hole 12, and a cylindrical receiving cavity is formed in the pin shaft 111, so that the pin shaft 111 can be conveniently moved relative to the elastic member 112.

[0051] According to some embodiments of the present invention, referring to Figure 3 and Figure 4 The top cover 20 includes a main body 21 and a flange 22. The main body 21 is a horizontally arranged circular plate. The flange 22 extends downward perpendicularly to the main body 21, and the flange 22 is formed into a ring shape along the circumference of the main body 21. The top cover 20 is matched and fixedly connected with the sleeve 10 through the flange 22. Thus, the main body 21 can provide a layout position for the groove 23, which is convenient for the layout of the groove 23. At the same time, the flange 22 and the main body 21 can form a cover shape, so that the top cover 20 can be sleeved on the upper side of the sleeve 10, thereby ensuring the stability of the connection between the top cover 20 and the sleeve 10.

[0052] According to some optional embodiments of the present invention, referring to Figure 3 and Figure 4 , the sleeve 10 faces one end of the top cover 20 (such as Figure 3The upper end of the sleeve 10 shown in FIG. 1 is provided with a mounting groove, which penetrates the outer wall of the sleeve 10 and is formed in a ring shape along the circumference of the sleeve 10. The flange 22 extends into the mounting groove so that the top cover 20 and the sleeve 10 are matched. The lower end of the flange 22 (as shown in FIG. Figure 4 The lower end of the flange 22 shown abuts against the bottom wall of the installation groove, the inner wall surface of the flange 22 abuts against the side wall of the installation groove, and the outer wall surface of the flange 22 is flush with the outer wall surface of the sleeve 10.

[0053] In this way, the installation groove can facilitate the insertion of the flange 22, thereby facilitating the coordinated installation of the top cover 20 and the sleeve 10. At the same time, the lower end and the inner wall surface of the flange 22 abut against the wall surface of the installation groove, thereby ensuring the sealing of the connection between the top cover 20 and the sleeve 10. In addition, the outer wall surface of the flange 22 is flush with the outer wall surface of the sleeve 10, which can improve the aesthetics of the auxiliary measuring device 100.

[0054] Reference below Figure 1-Figure 4 A laser tracker-assisted measurement device 100 according to an embodiment of the present invention is described.

[0055] The laser tracker-assisted measurement device 100 according to the embodiment of the utility model is used to measure a pin 200 . The laser tracker-assisted measurement device 100 includes: a sleeve 10 , a top cover 20 and an extension plate 30 .

[0056] Specifically, the sleeve 10 is a hollow cylinder, and a cylindrical through hole 13 extending in the up-down direction is formed in the sleeve 10. A mounting hole 12 is provided on the inner wall of the sleeve 10, and the mounting hole 12 extends in the radial direction of the sleeve 10. A mounting groove is formed at the upper end of the sleeve 10, and the mounting groove passes through the outer wall of the sleeve 10 and is formed in a ring shape along the circumference of the sleeve 10. A matching groove 14 is provided at the lower end of the sleeve 10, and the matching groove 14 passes through the peripheral wall of the through hole 13 along the radial direction of the sleeve 10. The top cover 20 is arranged on the upper side of the sleeve 10, and the top cover 20 includes a main body 21 and a flange 22. The main body 21 is a horizontally arranged circular plate, and the flange 22 extends downward perpendicular to the main body 21 and forms a ring along the circumference of the main body 21; the extension plate 30 is connected to the lower end of the sleeve 10, and the extension plate 30 extends along the outer circumference of the sleeve 10 as an arc plate, the upper surface of the extension plate 30 is formed as an auxiliary plane 31, and the lower surface of the extension plate 30 is flush with the lower end of the sleeve 10.

[0057] Three elastic positioning structures 11 are provided in the sleeve 10. The elastic positioning structure 11 is provided in the mounting hole 12. The elastic positioning structure 11 includes a pin shaft 111 and an elastic member 112. The pin shaft 111 extends in the radial direction of the sleeve 10. A receiving cavity is formed in the pin shaft 111. The elastic member 112 is provided in the receiving cavity. One end of the elastic member 112 is connected to the sleeve 10, and the other end of the elastic member 112 is connected to the pin shaft 111.

[0058] The pin 200 includes a measuring portion 210 and a protruding portion 220 . The protruding portion 220 is disposed on the upper side of the measuring portion 210 , and the diameter of the protruding portion 220 is smaller than the diameter of the measuring portion 210 . An end surface of the measuring portion 210 connected to the protruding portion 220 forms a measuring plane 2101 .

[0059] When the auxiliary measuring device 100 is used to measure the pin 200, the pin 200 is first fixed, and then the sleeve 10 is sleeved on the protrusion 220 until the measuring plane 2101 of the measuring part 210 abuts against the bottom wall of the matching groove 14, so that the measuring plane 2101, the matching groove 14 and the auxiliary plane 31 are coplanar. At the same time, the elastic member 112 pushes the pin shaft 111 to abut against the outer peripheral wall of the protrusion 220, so that the pin 200 and the sleeve 10 are coaxial. Then, the target ball 400 is placed on the auxiliary plane 31, and the position of the measuring plane 2101 is measured using the laser tracker 300. Then, the target ball 400 is placed in the groove 23, and the center of the target ball 400 is measured using the laser tracker 300. The center of the measuring plane 2101 is obtained by projecting the center of the target ball 400 onto the measuring plane 2101, and the auxiliary measuring device 100 completes measuring the position of the pin 200.

[0060] The laser tracker-assisted measurement device 100 of the utility model sets the auxiliary plane 31 of the extension plate 30 coplanarly with the measurement plane 2101. The position of the measurement plane 2101 is measured by measuring the auxiliary plane 31 of the extension plate 30, which can facilitate the accurate positioning of the measurement plane 2101, thereby effectively improving the measurement efficiency and measurement accuracy. At the same time, it can also improve the versatility of the laser tracker 300 in measuring the pin 200.

[0061] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0062] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0063] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0065] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A laser tracker-assisted measuring device for measuring a pin, the pin comprising a measuring portion and a protruding portion, the protruding portion being arranged on the upper side of the measuring portion, and the diameter of the protruding portion being smaller than the diameter of the measuring portion, and the end surface of one end of the measuring portion connected to the protruding portion forming a measuring plane, characterized in that: The top surface of the auxiliary measuring device is provided with a groove for placing the target ball, and the bottom surface of the auxiliary measuring device is provided with a matching groove, and the auxiliary measuring device is suitable for being sleeved on the top of the pin so that the bottom wall of the matching groove fits with the measuring plane; The auxiliary measuring device comprises an extension plate, which extends in a horizontal direction. An auxiliary plane suitable for supporting a target ball is formed on the extension plate, and the auxiliary plane is coplanar with a bottom wall of the matching groove.

2. The laser tracker-assisted measurement device according to claim 1, characterized in that: The auxiliary measuring device comprises a sleeve and a top cover, wherein the top cover is arranged on the upper side of the sleeve, and the groove is arranged on the upper side of the top cover. A through hole is formed in the sleeve for the protrusion to extend into, and the matching groove is provided on the lower end surface of the sleeve. The matching groove penetrates the peripheral wall of the through hole along the radial direction of the sleeve, and the extension plate is connected to the lower end of the sleeve.

3. The laser tracker-assisted measurement device according to claim 2, characterized in that: The lower surface of the extension plate is flush with the lower end surface of the sleeve.

4. The laser tracker-assisted measurement device according to claim 2, characterized in that: The extension plate extends along the outer circumference of the sleeve to form an arc-shaped plate.

5. The laser tracker-assisted measurement device according to claim 2, characterized in that: The inner wall of the sleeve is provided with an elastic positioning structure, the number of the elastic positioning structures is multiple, and the multiple elastic positioning structures are evenly spaced along the peripheral wall of the sleeve. The elastic positioning structure is suitable for abutting against the protrusion in the radial direction of the sleeve to position the protrusion so that the pin is coaxial with the sleeve.

6. The laser tracker-assisted measurement device according to claim 5, characterized in that: The elastic positioning structure comprises: a pin shaft and an elastic member, wherein the pin shaft extends in the radial direction of the sleeve, the elastic member is connected between the sleeve and the pin shaft, and the elastic member is used to push the pin shaft to abut against the outer peripheral wall of the protrusion.

7. The laser tracker-assisted measurement device according to claim 6, characterized in that: A receiving cavity is provided in the pin shaft, and a part of the elastic member is provided in the receiving cavity.

8. The laser tracker-assisted measurement device according to claim 5, characterized in that: A mounting hole is formed on the inner wall of the sleeve, and the mounting hole extends radially along the sleeve and penetrates the inner wall of the sleeve. The elastic positioning structure corresponds to the mounting hole one by one, and at least part of the elastic positioning structure is arranged in the mounting hole.

9. The laser tracker-assisted measurement device according to claim 2, characterized in that: The top cover includes a main body and a flange, wherein the main body is a horizontally arranged circular plate, the flange extends downward perpendicular to the main body, and the flange is formed into a ring shape along the circumference of the main body, and the top cover cooperates with the sleeve and is fixedly connected through the flange.

10. The laser tracker-assisted measurement device according to claim 9, characterized in that: A mounting groove is provided at one end of the sleeve facing the top cover, the mounting groove penetrates the outer wall surface of the sleeve and is formed in a ring shape along the circumference of the sleeve, the flange extends into the mounting groove to make the top cover cooperate with the sleeve, the lower end of the flange abuts against the bottom wall of the mounting groove, the inner wall surface of the flange abuts against the side wall of the mounting groove, and the outer wall surface of the flange is flush with the outer wall surface of the sleeve.

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