Three-dimensional size measuring device

Abstract

The utility model relates to a three-dimensional size measuring device which comprises a six-axis mechanical arm and a laser scanning mechanism, the laser scanning mechanism comprises a laser scanning assembly, the laser scanning assembly comprises a base, a limiting cylinder and a laser scanning head, the limiting cylinder is installed on the base, an installation base of the laser scanning head is installed in the limiting cylinder, and a protruding block is installed on the installation base; l-shaped grooves are formed in the two sides in the limiting cylinder and matched with the protruding blocks. And a first spring is also arranged in the limiting cylinder. When the laser scanning head is installed, a protruding block on an installation base of the laser scanning head is clamped into an L-shaped groove in a limiting cylinder and slides downwards till the protruding block is clamped into the end of a horizontal part of the L-shaped groove, meanwhile, a first spring is connected with the installation base of the laser scanning head in an abutting mode and is in a compressed state, and when the laser scanning head needs to be overhauled or replaced, the laser scanning head is pressed, so that the laser scanning head is replaced. The protruding blocks can slide in the L-shaped grooves, the protruding blocks directly slide out of the L-shaped grooves, dismounting and mounting are easy and convenient, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of dimensional measurement, and particularly relates to a three-dimensional dimensional measurement device. Background Technique

[0002] With the increasing requirements for flexible production in the automation industry, industrial machine vision products will gradually become more intelligent. The 3D vision technology is applied to more intelligent hardware products. At present, the three-dimensional dimensional measurement of products is mainly the structure of a coordinate measuring machine plus a two-degree-of-freedom rotating laser measuring head structure or a six-degree-of-freedom robotic arm carrying a laser scanning head structure. The six-degree-of-freedom robotic arm carrying a laser scanning head structure can measure using the positioning points on the measured object. Especially when measuring large-sized measured objects, multiple laser scanning heads need to be carried to complete the measurement. However, the existing laser scanning heads are mainly connected to the robotic arm through bolts. When it is necessary to repair or replace the laser scanning head, due to the threaded connection between the laser scanning head and the robotic arm, each laser scanning head needs to be unscrewed one by one, which is time-consuming and laborious. Content of the Utility Model

[0003] The purpose of the utility model is to design a three-dimensional dimensional measurement device, which can achieve the simple disassembly and installation of the laser scanning head when it is necessary to repair or replace the laser scanning head, so as to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A three-dimensional dimensional measurement device is provided, which includes a six-axis robotic arm and a laser scanning mechanism. The end of the six-axis robotic arm is connected to the laser scanning mechanism. The laser scanning mechanism includes a mounting bracket and a plurality of laser scanning components mounted on the mounting bracket. The laser scanning component includes a base, a limiting cylinder, and a laser scanning head. The base is connected to the mounting bracket. The limiting cylinder is mounted on the base. The mounting seat of the laser scanning head is mounted in the limiting cylinder. The mounting seat is provided with a convex block. L-shaped grooves are opened on both sides inside the limiting cylinder. The port of the vertical part of the L-shaped groove is located at the top of the limiting cylinder. The horizontal part of the L-shaped groove is located in the middle and lower part of the limiting cylinder. The L-shaped groove cooperates with the convex block. A first spring is further provided inside the limiting cylinder. One end of the first spring abuts against the mounting seat, and the other end abuts against the base.

[0005] Further, a through hole is opened inside the limiting cylinder at the position of the horizontal part of the L-shaped groove, and a limiting component is mounted in the through hole.

[0006] Further, the limiting component includes a limiting block and an elastic member. The limiting block is located on the L-shaped groove and can pass through the through hole. The elastic member is located in the through hole and is connected to the limiting block.

[0007] Further, the cross-section of the limiting block is a right trapezoid, the right-angled side of the limiting block faces the end of the horizontal part of the L-shaped groove, and the hypotenuse of the limiting block faces away from the end of the horizontal part of the L-shaped groove.

[0008] Further, the elastic member includes a second spring, a movable column, a first fixing plate and a second fixing plate. The first fixing plate is connected to the limiting block, the second fixing plate is installed in the limiting cylinder, one end of the movable column is connected to the first fixing plate, the other end of the movable column passes through the second fixing plate and is connected with a movable plate, one end of the second spring abuts against the first fixing plate, and the other end of the second spring abuts against the second fixing plate.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0010] By providing the limiting cylinder, when installing the laser scanning head, the convex block on the mounting seat of the laser scanning head is snapped into the L-shaped groove on the limiting cylinder and slides downward until it is snapped into the end of the horizontal part of the L-shaped groove. At the same time, the first spring is abutted by the mounting seat of the laser scanning head and is in a compressed state. When the convex block is snapped into the end of the horizontal part of the L-shaped groove, due to the elastic potential energy of the first spring, the convex block can be fixed, and at the same time, the laser scanning head is fixed; when it is necessary to repair or replace the laser scanning head, press the laser scanning head so that the convex block can slide in the L-shaped groove, and directly slide the convex block out of the L-shaped groove. The disassembly and installation are simple, time-saving and labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0012] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0013] Figure 2 is a schematic diagram of the structure after the installation of the laser scanning assembly of the present utility model;

[0014] Figure 3 is a cross-sectional view of the structure after the installation of the laser scanning assembly of the present utility model;

[0015] Figure 4 is another cross-sectional view of the structure after the installation of the laser scanning assembly of the present utility model from another angle;

[0016] The names of the components marked in the drawings are as follows:

[0017] 1. Six-axis robotic arm; 2. Laser scanning mechanism; 3. Mounting bracket; 4. Laser scanning assembly; 5. Base; 6. Limiting cylinder; 7. Laser scanning head; 8. Mounting seat; 9. Bump; 10. L-shaped groove; 11. First spring; 12. Through hole; 13. Limiting block; 14. Elastic member; 15. Second spring; 16. Movable column; 17. First fixing plate; 18. Second fixing plate; 19. Movable plate. Detailed implementation manner

[0018] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following, in combination with the accompanying drawings and preferred embodiments, details the specific implementation manner, structure, features and their effects of the present invention as follows.

[0019] Embodiment: Refer to Figures 1-4 , a three-dimensional dimension measuring device, comprising a six-axis robotic arm 1 and a laser scanning mechanism 2. The end of the six-axis robotic arm 1 is connected to the laser scanning mechanism 2. The laser scanning mechanism 2 includes a mounting bracket 3 and a plurality of laser scanning assemblies 4 mounted on the mounting bracket 3. The laser scanning assembly 4 includes a base 5, a limiting cylinder 6 and a laser scanning head 7. The base 5 is connected to the mounting bracket 3. The limiting cylinder 6 is mounted on the base 5. The mounting seat 8 of the laser scanning head 7 is mounted in the limiting cylinder 6, and a bump 9 is mounted on the mounting seat 8; L-shaped grooves 10 are provided on both sides inside the limiting cylinder 6. The port of the vertical portion of the L-shaped groove 10 is located at the top of the limiting cylinder 6, and the horizontal portion of the L-shaped groove 10 is located in the middle and lower part of the limiting cylinder 6. The L-shaped groove 10 cooperates with the bump 9, and the bump 9 can slide in the L-shaped groove 10; Further, an annular groove is provided inside the limiting cylinder 6 and above the horizontal portion of the L-shaped groove 10. A fixing block is mounted on the mounting seat 8 above the bump 9. The annular groove cooperates with the fixing block. The bump 9 is snapped into the end of the horizontal portion of the L-shaped groove 10 for preliminary fixation, and at the same time, the fixing block is snapped into the annular groove for further fixation. A first spring 11 is also provided inside the limiting cylinder 6. One end of the first spring 11 abuts against the mounting seat 8, and the other end abuts against the base 5. When installing the laser scanning head 7, the bump 9 on the mounting seat 8 of the laser scanning head 7 is snapped into the L-shaped groove 10 on the limiting cylinder 6 and slides downward until it is snapped into the end of the horizontal portion of the L-shaped groove 10. At the same time, the first spring 11 is abutted by the mounting seat 8 of the laser scanning head 7 and is in a compressed state. After the bump 9 is snapped into the end of the horizontal portion of the L-shaped groove 10, due to the elastic potential energy of the first spring 11, the bump 9 can be fixed, and at the same time, the laser scanning head 7 is fixed; When it is necessary to repair or replace the laser scanning head 7, press the laser scanning head 7 so that the bump 9 can slide in the L-shaped groove 10, and directly slide the bump 9 out of the L-shaped groove 10. The disassembly and installation are simple, time-saving and labor-saving.

[0020] A through hole 12 is provided in the limiting cylinder 6 and at the position of the horizontal part of the L-shaped groove 10. A limiting assembly is installed in the through hole 12. The limiting assembly includes a limiting block 13 and an elastic member 14. The limiting block 13 is located on the L-shaped groove 10 and can pass through the through hole 12. The cross section of the limiting block 13 is a right-angled trapezoid. The right-angled side of the limiting block 13 faces the end of the horizontal part of the L-shaped groove 10, and the hypotenuse of the limiting block 13 faces away from the end of the horizontal part of the L-shaped groove 10. When the protrusion 9 moves toward the end of the horizontal part of the L-shaped groove 10, the hypotenuse of the limiting block 13 helps the protrusion 9 to get stuck into the end of the horizontal part of the L-shaped groove 10. During the action between the projection 9 and the stopper 13, the elastic member 14 is deformed, and the stopper 13 moves toward the through hole 12 until the projection 9 is stuck into the end of the horizontal part of the L-shaped groove 10. Then the stopper 13 loses the power of the projection 9, and the elastic member 14 resumes to move with the stopper 13 toward the L-shaped groove 10 until it reaches the L-shaped groove 10. At this time, the right angle side of the stopper 13 faces the end of the horizontal part of the L-shaped groove 10. If there is no external force, the projection 9 cannot be separated from the L-shaped groove 10, which further limits the position of the projection 9 and ensures that the laser scanning head 7 will not loosen during operation. The elastic member 14 is located in the through hole 12 and connected to the stopper 13. The elastic member 14 includes a second spring 15, a movable column 16, a first fixed plate 17 and a second fixed plate 18. The first fixed plate 17 is connected to the limit block 13, and the second fixed plate 18 is installed in the limit cylinder 6. One end of the movable column 16 is connected to the first fixed plate 17, and the other end of the movable column 16 passes through the second fixed plate 18 and is connected to a movable plate 19. A pull ring is provided on the movable plate 19. One end of the second spring 15 abuts against the first fixed plate 17, and the other end of the second spring 15 abuts against the second fixed plate 18. When the protrusion 9 acts on the limit block 13, the second spring 15 is in a compressed state, and the limit block 13 moves toward the through hole 12; when the protrusion 9 is stuck in the end of the horizontal part of the L-shaped groove 10, the limit block 13 loses the power of the protrusion 9, and the second spring 15 recovers and moves the limit block 13 toward the L-shaped groove 10 until it reaches the L-shaped groove 10; when the laser scanning head 7 needs to be repaired or replaced, the pull ring is pulled by hand to drive the movable plate 19, the movable column 16, the first fixed plate 17 and the limit block 13 to move in turn, and the second spring 15 is compressed until the limit block 13 moves into the through hole 12, and then the protrusion 9 slides out of the L-shaped groove 10, completing the disassembly of the laser scanning head 7.

[0021] Working principle of this embodiment: When installing the laser scanning head 7, the bump 9 on the mounting base 8 of the laser scanning head 7 is snapped into the L-shaped groove 10 on the limiting cylinder 6 and slides downward until it is snapped into the end of the horizontal part of the L-shaped groove 10. At the same time, the first spring 11 is abutted by the mounting base 8 of the laser scanning head 7 and is in a compressed state; during the interaction between the bump 9 and the limiting block 13, the second spring 15 is in a compressed state, and the limiting block 13 moves towards the through hole 12 until the bump 9 is snapped into the end of the horizontal part of the L-shaped groove 10. Then, the limiting block 13 loses the driving force of the bump 9, and the second spring 15 returns to its original state, driving the limiting block 13 to move towards the L-shaped groove 10 until it abuts against the L-shaped groove 10; when it is necessary to repair or replace the laser scanning head 7, pull the pull ring by hand, which drives the movable plate 19, the movable column 16, the first fixing plate 17 and the limiting block 13 to move in sequence. The second spring 15 is compressed until the limiting block 13 moves into the through hole 12, and then the bump 9 slides out of the L-shaped groove 10, thus completing the disassembly of the laser scanning head 7.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "upper", "lower", "left", "right", "front", "rear" and similar expressions used herein are only for the purpose of illustration.

[0023] The above are only the preferred embodiments of the present invention and do not impose any formal limitations on the present invention. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or equivalent changes and modifications within the scope of the technical solution of the present invention by using the above-disclosed technical content. However, as long as it does not depart from the technical solution content of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A three-dimensional dimension measuring device, characterized in that: It includes a six-axis robotic arm (1) and a laser scanning mechanism (2). The end of the six-axis robotic arm (1) is connected to the laser scanning mechanism (2). The laser scanning mechanism (2) includes a mounting bracket (3) and a plurality of laser scanning components (4) mounted on the mounting bracket (3). The laser scanning component (4) includes a base (5), a limiting cylinder (6), and a laser scanning head (7). The base (5) is connected to the mounting bracket (3). The limiting cylinder (6) is mounted on the base (5). The mounting seat (8) of the laser scanning head (7) is mounted in the limiting cylinder (6). The mounting seat (8) is provided with a convex block (9). Both sides inside the limiting cylinder (6) are provided with L-shaped grooves (10). The port of the vertical part of the L-shaped groove (10) is located at the top of the limiting cylinder (6). The horizontal part of the L-shaped groove (10) is located in the middle and lower part of the limiting cylinder (6). The L-shaped groove (10) cooperates with the convex block (9). A first spring (11) is further provided inside the limiting cylinder (6). One end of the first spring (11) abuts against the mounting seat (8), and the other end abuts against the base (5).

2. The three-dimensional dimension measuring device according to claim 1, characterized in that: A through hole (12) is provided inside the limiting cylinder (6) at the position of the horizontal part of the L-shaped groove (10), and a limiting component is mounted inside the through hole (12).

3. The three-dimensional dimension measuring device according to claim 2, wherein: The limiting component includes a limiting block (13) and an elastic member (14). The limiting block (13) is located on the L-shaped groove (10) and can pass through the through hole (12). The elastic member (14) is located inside the through hole (12) and is connected to the limiting block (13).

4. The three-dimensional dimension measuring device according to claim 3, characterized in that: The cross section of the limiting block (13) is in the shape of a right trapezoid. The right-angle side of the limiting block (13) faces the end of the horizontal part of the L-shaped groove (10), and the hypotenuse of the limiting block (13) faces away from the end of the horizontal part of the L-shaped groove (10).

5. The three-dimensional dimension measuring device according to claim 3, wherein: The elastic member (14) includes a second spring (15), a movable column (16), a first fixing plate (17), and a second fixing plate (18). The first fixing plate (17) is connected to the limiting block (13). The second fixing plate (18) is mounted inside the limiting cylinder (6). One end of the movable column (16) is connected to the first fixing plate (17). The other end of the movable column (16) passes through the second fixing plate (18) and is connected to a movable plate (19). One end of the second spring (15) abuts against the first fixing plate (17), and the other end of the second spring (15) abuts against the second fixing plate (18).

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