Three-dimensional laser tracker target device

Abstract

The utility model relates to a three-dimensional laser tracker target device in the technical field of laser measurement. The three-dimensional laser tracker target device comprises a reflecting ball with a spherical outer bottom surface and a prism base with an inserting rod at the top end, the prism base is provided with a connecting column, the center of the bottom end face of the connecting column is provided with an inserting groove which is correspondingly and detachably connected with the inserting rod in an inserted mode, the center of the top end face of the connecting column is provided with a counterbore, the upper hole opening wall of the counterbore is evenly and annularly provided with three upward spherical supporting parts, and the spherical supporting parts protrude out of the upper hole opening wall of the counterbore. The spherical supporting parts are matched with the outer bottom face of the reflection ball, and the three spherical supporting parts are the same in sphere center and are all located on the central axis of the connecting column. The target device can be combined with the prism base to realize centering and leveling of the reflection ball.

Description

Technical Field

[0001] This utility model relates to the field of laser measurement technology, and in particular to a target device for a three-dimensional laser tracker. Background Technology

[0002] As is well known, the prism is a key component of a total station for distance measurement, and the total station calculates distance by emitting a laser beam onto the prism and receiving the reflected signal; as shown in the attached image. Figure 1 As shown, prisms are generally fixed on a base, which can adjust the height and horizontal position of the prism to ensure optical alignment. High-precision reflective spheres, such as the Leica 1.5″RRR red-edge corner prism reflective sphere, are also used as supporting reflective devices for 3D laser trackers, mainly for industrial measurement and mold inspection. Because of their spherical structure, they cannot be centered and leveled. Although existing prism bases can be used for connection and support, they cannot solve the problem of aligning the reflective sphere. Utility Model Content

[0003] In order to overcome the shortcomings in the background technology and solve the existing technical problems, this utility model discloses a three-dimensional laser tracker target device that can achieve centering and leveling of the reflective sphere by combining with a prism base.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A three-dimensional laser tracker target device includes a reflective sphere with a spherical outer bottom surface and a prism base with a plug at the top. The prism base is provided with a connecting post. The bottom end face of the connecting post is provided with a slot that can be detachably inserted into the plug. The top end face of the connecting post is provided with a countersunk hole. The upper opening wall of the countersunk hole is uniformly provided with three upward-facing spherical support parts. The spherical support parts protrude from the upper opening wall of the countersunk hole. The spherical support parts are adapted to the outer bottom surface of the reflective sphere, and the centers of the three spherical support parts are the same and are all located on the central axis of the connecting post.

[0006] Furthermore, the lower wall of the countersunk hole is provided with an annular groove, and a retaining ring is installed in the annular groove.

[0007] Furthermore, the connecting column is designed as a rotationally symmetric structure.

[0008] Furthermore, the depth of the countersunk hole is 0.05 to 0.07 times the diameter of the spherical support.

[0009] Furthermore, the circumferential interval between two adjacent spherical support sections is greater than 100 degrees.

[0010] Furthermore, the prism base is a height-adjustable base for a total station.

[0011] By adopting the technical scheme as described above, the utility model has the following beneficial effects:

[0012] The three-dimensional laser tracker target device discloses in the utility model has the effect that the target center is calculated to the prism base support center through the support of three spherical surface support parts of the connecting column to the reflecting ball based on the existing prism base, so that the reflecting ball can cooperate with the prism base, centering and leveling are carried out, and the short side transfer function of engineering control measurement is realized. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the structural schematic diagram of the existing prism base;

[0014] Figure 2 It is the three-dimensional structure schematic diagram of the connecting column;

[0015] Figure 3 It is the overhead structure schematic diagram of the connecting column;

[0016] Figure 4 It is the cross section structure schematic diagram of the connecting column.

[0017] In the drawing: 1, prism base;101, plug rod;2, connecting column;201, counterbore;202, spherical surface support part;203, ring groove;204, insertion slot. DETAILED DESCRIPTION

[0018] The technical scheme of the utility model will be described below in combination with the drawings in the embodiments of the utility model, and in the description, it should be understood that if the orientation or position relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right" and the like is described, it is only corresponding to the drawings of the utility model, and is not intended to indicate or imply that the device or element must have a particular orientation.

[0019] In combination with the drawings Figures 1-4 The three-dimensional laser tracker target device comprises a reflecting ball with a spherical outer bottom surface and a prism base 1 provided with a plug rod 101 at the top end, and the prism base 1 is generally a height-adjustable base for a total station, so that the supporting height of the reflecting ball can be adjusted conveniently;

[0020] The prism base 1 is provided with a connecting column 2, the bottom end face of the connecting column 2 is provided with a plug groove 204 corresponding to the plug rod 101 and being detachably plugged, according to the requirement, the connecting column 2 is provided with a rotational symmetry structure, so that the connecting column 2 can be inserted on the plug rod 101 in any orientation, and the stability after insertion is ensured; the top end face of the connecting column 2 is provided with a countersunk hole 201, the upper hole wall of the countersunk hole 201 is uniformly provided with three upward spherical surface supporting portions 202, the stability of three surface supporting is ensured; according to the requirement, the upper hole depth of the countersunk hole 201 is 0.05-0.07 times of the diameter of the spherical surface supporting portion 202, in addition, the circumferential interval of the two adjacent spherical surface supporting portions 202 is greater than 100 degrees, and generally does not exceed 105 degrees, by limiting the supporting area, the influence of the machining precision on the contact support is reduced, and the reflecting ball can be conveniently adjusted;

[0021] The spherical surface supporting portion 202 is protruded from the upper hole wall of the countersunk hole 201, the spherical surface supporting portion 202 is matched with the outer bottom surface of the reflecting ball, and the centers of the three spherical surface supporting portions 202 are the same and are located on the central axis of the connecting column 2, so that the reflecting ball can be automatically centered as long as it is placed on the top end of the connecting column 2; according to the requirement, the lower hole wall of the countersunk hole 201 is provided with a ring groove 203, and a check ring is installed in the ring groove 203, when the plug groove 204 is large in diameter and penetrates to the countersunk hole 201, the inserted plug rod 101 can be limited by the check ring.

[0022] The three-dimensional laser tracker target device is inserted on the plug rod 101 of the prism base 1, and then the outer bottom surface of the reflecting ball is placed on the top end of the connecting column 2, and the reflecting ball is supported by the three spherical surface supporting portions 202.

[0023] The part not described in the utility model is the prior art, for those skilled in the art, obviously, the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model; therefore, from any point of view, the above embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model, and any figure mark in the claims should not be regarded as limiting the content of the involved claims.

Claims

1. A three-dimensional laser tracker target device comprising a reflective sphere having a spherical outer bottom surface and a prism base (1) having a stem (101) at a top end, characterized in that: The prism base (1) is provided with a connecting column (2), the bottom end surface of the connecting column (2) is centrally provided with a plug groove (204) corresponding to the plug rod (101) and being detachably plugged, the top end surface of the connecting column (2) is centrally provided with a countersunk hole (201), the upper hole wall of the countersunk hole (201) is uniformly and annularly provided with three upward spherical surface supporting portions (202), the spherical surface supporting portions (202) are protruded from the upper hole wall of the countersunk hole (201), the spherical surface supporting portions (202) are adapted to the outer bottom surface of the reflecting ball, and the centers of the three spherical surface supporting portions (202) are the same and are located on the central axis of the connecting column (2).

2. The three-dimensional laser tracker target device of claim 1, wherein: The lower hole wall of the countersunk hole (201) is provided with an annular groove (203), and the annular groove (203) is provided with a retaining ring.

3. The three-dimensional laser tracker targeting device of claim 1, wherein: The connecting column (2) is provided with a rotational symmetry structure.

4. The three-dimensional laser tracker targeting device of claim 1, wherein: The upper hole depth of the countersunk hole (201) is 0.05-0.07 times the diameter of the spherical surface supporting portion (202).

5. The three-dimensional laser tracker targeting device of claim 1, wherein: The circumferential interval between the two adjacent spherical surface supporting portions (202) is greater than 100 degrees.

6. The three-dimensional laser tracker targeting device of claim 1, wherein: The prism base (1) is a height-adjustable base for a total station.

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