Simple calibration device for laser positioning of center measuring instrument

Abstract

The utility model relates to the technical field of large mechanical workpiece detection, in particular to a simple calibration device for laser positioning of a center measuring instrument, which comprises a base and a laser positioning block, a laser is mounted at the top of the laser positioning block, and a sliding groove sliding relative to the laser positioning block is arranged on the base. One side of the top of the base is connected with a connecting cylinder through a connecting rod, a through hole is formed in the working end of the connecting cylinder, and a calibration film covering the through hole is arranged at the top of the connecting cylinder. According to the scheme, the sliding groove sliding relative to the laser positioning block is formed in the base, the laser positioning block is positioned, laser emitted by the laser device in the laser positioning block is irradiated to the calibration film, and calibration is carried out according to the position of the center of a precision line. The calibration device is simple in structure, low in cost and suitable for machining factories, does not need to be connected with computer equipment, and can be directly used for measurement and calibration in factories.

Description

Technical Field

[0001] This utility model relates to the field of large mechanical workpiece inspection technology, and in particular to a simple laser positioning calibration device for a center measuring instrument. Background Technology

[0002] To prevent center hole deviations in large mechanical workpieces after machining, laser-guided centering measuring instruments are currently used to inspect the center holes of these workpieces. The most crucial component of these measuring instruments is the laser emitter; its accuracy, once established, determines the overall accuracy of the measuring instrument.

[0003] Current laser calibration uses computer data for verification, suitable for manufacturers of large-volume centering instruments. However, for machining companies, the frequency of use is very low, and purchasing laser calibration instruments is expensive, resulting in high costs. Furthermore, centering instruments develop certain deviations after long-term use. Without calibration and testing, subsequent inspections of the center holes of large mechanical workpieces using the same instrument will have errors, leading to inspection failures and even affecting the product scrap rate. Utility Model Content

[0004] The purpose of this invention is to provide a simple laser positioning calibration device for a central measuring instrument to solve the problems encountered in the background art.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A simple laser positioning calibration device for a center measuring instrument includes a base and a laser positioning block. A laser is mounted on the top of the laser positioning block. The base has a sliding groove that slides with the laser positioning block. A connecting cylinder is connected to the top side of the base via a connecting rod. The working end of the connecting cylinder has a through hole. The top of the connecting cylinder has a calibration film that covers the through hole.

[0007] In the above scheme, the calibration film is provided with precision lines, which are arranged in a cross shape.

[0008] In the above configuration, the bottom of the connecting rod is perpendicular to the base, and the top of the connecting rod is perpendicular to the connecting cylinder. The connecting cylinder is located directly above the base and is a hollow rectangular frame structure. The through hole penetrates through the top and bottom of the connecting cylinder.

[0009] In the above scheme, the laser positioning block includes a base and a slider. The laser is installed on the top side of the base, and the slider is fixedly connected to the bottom of the base by countersunk screws. The slider cooperates with the groove. In order to make the slider slide better in the groove, chamfers are provided on both sides of the bottom of the slider.

[0010] In the above-described scheme, as a preferred embodiment, a handle is installed on the top of the base, away from the laser. Additionally, a switch and a battery are also installed on the top of the base; the battery is housed in a bracket, and the switch is connected to the battery on one side and to the laser on the other.

[0011] Compared with existing technologies, the advantages of this invention are as follows: This solution positions the laser positioning block by creating a sliding groove on the base that slides with the laser positioning block. The laser emitted by the laser in the positioning block hits the calibration film, and calibration is performed according to the position of the center of the accuracy line. This facilitates the identification of whether the laser is accurate and whether it can be used to measure the center hole in large mechanical workpieces. This calibration device has a simple structure, low cost, is suitable for machining factories, and does not require connection to computer equipment, allowing for direct measurement and calibration within the factory area. Attached Figure Description

[0012] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the connecting cylinder in this utility model;

[0015] Figure 3 This is a schematic diagram showing the installation of the connecting cylinder and the calibration membrane in this utility model;

[0016] Figure 4 This is a schematic diagram of the laser positioning block in this utility model;

[0017] Figure 5 for Figure 4 The front view.

[0018] The following numbers are labeled in the diagram: 1-base; 11-slide groove; 12-connecting rod; 14-calibration membrane; 13-connecting cylinder; 15-precision line; 16-through hole; 2-laser positioning block; 21-laser; 22-base; 23-slider; 24-countersunk screw; 25-handle; 26-switch; 27-bracket; 28-battery; 29-chamfer. Detailed Implementation

[0019] To make the technical means, creative features, achieved objectives and effects of this utility model easier to understand, the utility model will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of this utility model, and therefore only show the relevant components of this utility model.

[0020] Based on the technical solution of this utility model, without changing the essential spirit of this utility model, those skilled in the art can propose various interchangeable structural methods and implementation methods. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model, and should not be regarded as the entirety of this utility model or as a limitation or restriction of the technical solution of this utility model.

[0021] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] like Figure 1 As shown, a simple laser positioning calibration device for a center measuring instrument includes a base 1 and a laser positioning block 2. A laser 21 is mounted on the top of the laser positioning block 2, and a sliding groove 11 is provided on the base 1 for sliding with the laser positioning block 2. In use, the bottom of the laser positioning block 2 is installed in the sliding groove 11 of the base 1, and the calibration position can be reached by pushing it to its maximum stroke.

[0023] A connecting cylinder 13 is connected to the top side of the base 1 via a connecting rod 12. The working end of the connecting cylinder 13 has a through hole 16 for the optical path of the laser emission to pass through. The top of the connecting cylinder 13 is provided with a calibration film 14 that covers the through hole 16. The laser emitted by the laser 21 in the laser positioning block 2 hits the calibration film 14 and is calibrated according to the center position.

[0024] The calibration film 14 has precision lines 15 arranged in a cross shape. If the red laser emitted by the laser positioning block 2 hits the intersection of the cross-shaped lines of the precision lines 15, it indicates that the line of the laser positioning block 2 is accurate and no adjustment is needed. If the red laser emitted by the laser positioning block 2 hits a line other than the intersection of the cross-shaped lines of the precision lines 15, the error range is determined according to the equidistant parameters of the lines. If it is within the error range, it can continue to be used; if it is outside the error range, it needs to be repaired.

[0025] The bottom of the connecting rod 12 is perpendicular to the base 1, and the top of the connecting rod 12 is perpendicular to the connecting cylinder 13. The connecting cylinder 13 is located directly above the base 1. The connecting cylinder 13 is a hollow rectangular frame structure. The through hole 16 penetrates the top and bottom of the connecting cylinder 13, and the calibration film 14 is attached to the through hole 16 located at the top of the connecting cylinder 13.

[0026] The laser positioning block 2 includes a base 22 and a slider 23. A laser 21 is mounted on the top side of the base 22, with its emission port facing upwards. The slider 23 is fixedly connected to the bottom of the base 22 by countersunk screws 24. The slider 23 engages with the groove 11, allowing for smooth sliding. To improve the sliding of the slider 23 within the groove 11, chamfers 29 are provided on both sides of the bottom of the slider 23, resulting in a higher degree of sliding fit.

[0027] As a preferred embodiment, a handle 25 is installed on the top side of the base 22 away from the laser 21. Pushing the handle 25 allows the laser positioning block 2 to be pushed to its maximum stroke in the slide groove 11 for limiting its position. Additionally, a switch 26 and a battery 28 are installed on the top of the base 22. The battery 28 is mounted in a bracket 27, which is fixed to the top of the base 22. The switch 26 is connected to the battery 28 on one side and to the laser 21 on the other. The switch 26 controls the laser 21 to start or stop emitting laser light, while the battery 28 provides power to the laser 21.

[0028] In summary, this solution positions the laser positioning block 2 by creating a sliding groove 11 on the base 1 that slides with the laser positioning block 2. The laser emitted by the laser 21 in the laser positioning block 2 hits the calibration film 14, and calibration is performed according to the center position of the accuracy line 15. This allows for the identification of whether the laser 21 is accurate and whether it can be used to continue measuring the center hole in large mechanical workpieces. This calibration device has a simple structure, low cost, and is suitable for machining factories. Furthermore, it does not require connection to computer equipment and can be directly measured and calibrated in the factory area.

[0029] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A simple laser positioning calibration device for a center measuring instrument, characterized in that: The device includes a base (1) and a laser positioning block (2). A laser (21) is mounted on the top of the laser positioning block (2). The base (1) has a sliding groove (11) that slides with the laser positioning block (2). A connecting cylinder (13) is connected to the top side of the base (1) via a connecting rod (12). A through hole (16) is provided at the working end of the connecting cylinder (13). A calibration film (14) covering the through hole (16) is provided on the top of the connecting cylinder (13).

2. The simplified laser positioning calibration device for a center measuring instrument according to claim 1, characterized in that: The calibration film (14) has a precision line (15).

3. The simplified laser positioning calibration device for a center measuring instrument according to claim 1, characterized in that: The bottom of the connecting rod (12) is perpendicular to the base (1), and the top of the connecting rod (12) is perpendicular to the connecting cylinder (13); the connecting cylinder (13) is located directly above the base (1).

4. The simplified laser positioning calibration device for a center measuring instrument according to claim 1, characterized in that: The connecting cylinder (13) is a hollow rectangular frame structure, and the through hole (16) penetrates the top and bottom of the connecting cylinder (13).

5. The simplified laser positioning calibration device for a center measuring instrument according to claim 1, characterized in that: The laser positioning block (2) includes a base (22) and a slider (23). The laser (21) is installed on the top side of the base (22), and the slider (23) is connected to the bottom of the base (22). The slider (23) cooperates with the slide groove (11).

6. The simplified laser positioning calibration device for a center measuring instrument according to claim 5, characterized in that: A handle (25) is mounted on the top of the base (22) on the side away from the laser (21).

7. A simplified laser positioning calibration device for a center measuring instrument according to claim 5, characterized in that: A switch (26) and a battery (28) are also installed on the top of the base (22). The switch (26) is connected to the battery (28) on one side via a line and to the laser (21) on the other side.

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