Non-contact deformation measuring instrument calibration device

Abstract

The utility model provides a non-contact type deformation measuring instrument calibrating device which comprises a main frame and a bidirectional lead screw, the lower end of the main frame is provided with a calibrating device base through a bolt, the upper side of the front end of the main frame is provided with a touch screen type liquid crystal display, and the front end of the main frame is provided with a slide way. An upper connecting rod and a lower connecting rod are slidably arranged at the upper end and the lower end of the interior of the sliding way respectively, a first lead screw nut and a second lead screw nut are fixed to the middle of the upper connecting rod and the middle of the lower connecting rod in a penetrating mode respectively, and the design solves the calibration problem of existing non-contact deformation measuring instruments of all types. According to the utility model, through the collaborative design of the dynamic calibration plate system, the high-precision grating ruler and the servo motor drive, the efficient and accurate calibration of the non-contact deformation measuring instrument is realized.

Description

Technical Field

[0001] This utility model is a non-contact deformation measuring instrument calibration device, belonging to the field of deformation measurement technology. Background Technology

[0002] With the development of technology, the methods of deformation measurement have gradually increased. Since its introduction into the testing field, non-contact deformation measuring instruments have been widely welcomed by the materials testing industry. Compared with traditional electronic extensometers, non-contact deformation measuring instruments have the following characteristics: they do not damage the sample; they do not require removal of the extensometer midway; they can track sample strain throughout the entire process; they can perform deformation tests in both longitudinal and transverse directions; and they can conduct micromechanical tests, etc. Metrology, as a key link in quality assurance, directly determines the performance and quality of measuring instruments. Non-contact deformation measuring instruments can only be used to perform deformation tests on relevant materials after being calibrated by relevant departments. For the calibration of electronic extensometers, existing calibration methods are already very mature.

[0003] However, due to differences in working principles and operating methods, existing extensometer calibration devices are no longer able to calibrate non-contact deformation measuring instruments, causing considerable trouble for companies using non-contact deformation measuring instruments. There is an urgent need for a non-contact deformation measuring instrument calibration device to solve the aforementioned problems. Utility Model Content

[0004] This invention addresses the difficulty in calibrating non-contact deformation measuring instruments by providing a dedicated calibration device for such instruments. It solves the calibration problem for all current types of non-contact deformation measuring instruments and can perform in-situ calibration by simulating the stretching process of a sample.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a non-contact deformation measuring instrument calibration device, comprising a main frame and a bidirectional lead screw. A calibration device base is bolted to the lower end of the main frame. A touch-screen LCD display is mounted on the upper front side of the main frame. A slide rail is provided at the front end of the main frame. An upper connecting rod and a lower connecting rod are slidably arranged at the upper and lower ends of the slide rail, respectively. A first lead screw nut and a second lead screw nut are respectively fixed through the middle of the upper and lower connecting rods. A high-precision grating ruler is installed at the rear end of the main frame. An upper grating reading head and a lower grating reading head are respectively provided on the upper and lower front ends of the high-precision grating ruler. An upper calibration plate and a lower calibration plate are respectively installed on the upper and lower connecting rods. A servo motor is installed at the lower end of the main frame. A bidirectional lead screw is connected to the shaft end of the servo motor. The upper end of the bidirectional lead screw passes through the main frame and is connected to a manual rotating handle.

[0006] Furthermore, the main frame and the calibration device base are made of cast iron.

[0007] Furthermore, a first bullseye wheel is embedded in the front side of both the left and right ends of the upper connecting rod, and a second bullseye wheel is embedded in the front side of both the left and right ends of the lower connecting rod. Both the first bullseye wheels and the two second bullseye wheels slide in contact with the left and right ends inside the slide rail.

[0008] Furthermore, the upper grating reading head and the lower grating reading head are respectively connected to the rear end of the upper connecting rod and the rear end of the lower connecting rod.

[0009] Furthermore, the front ends of the upper calibration plate and the lower calibration plate are respectively provided with multiple upper calibration points and multiple lower calibration points.

[0010] Furthermore, the first lead screw nut and the second lead screw nut are respectively fitted onto the upper and lower sides of the bidirectional lead screw through the thread principle.

[0011] The beneficial effects of this utility model are as follows: This utility model provides a non-contact deformation measuring instrument calibration device. Due to the addition of a manual rotary handle, a touch-screen LCD display, a main frame, an upper calibration plate, upper and lower calibration points, a lower calibration plate, a high-precision grating ruler, an upper connecting rod, a bidirectional lead screw, a lower connecting rod, a servo motor, an upper grating reading head, a lower grating reading head, a first lead screw nut, and a second lead screw nut, the structure is reasonable. Through the coordinated design of the dynamic calibration plate system, the high-precision grating ruler, and the servo motor drive, efficient and accurate calibration of the non-contact deformation measuring instrument is achieved. The grating ruler has high measurement accuracy, meeting the high-level calibration requirements of non-contact measuring instruments. The reverse movement of the dual calibration plates can simulate the dynamic stretching process, adapting to various types of measuring instruments. The combination of touch screen control and manual adjustment balances automation and flexibility, significantly improving calibration efficiency. It offers high precision, multi-functionality, and ease of operation, making it highly practical. Attached Figure Description

[0012] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0013] Figure 1 This is a schematic diagram of the structure of a non-contact deformation measuring instrument calibration device according to the present invention;

[0014] Figure 2 This is a schematic diagram of the right cross-sectional structure of a non-contact deformation measuring instrument calibration device according to the present invention;

[0015] Figure 3 This is an enlarged schematic diagram of the upper connecting rod structure of a non-contact deformation measuring instrument calibration device according to this utility model;

[0016] Figure 4 This is an enlarged schematic diagram of the lower connecting rod structure of a non-contact deformation measuring instrument calibration device according to this utility model.

[0017] In the diagram: 1-Manual rotary handle, 2-Touchscreen LCD display, 3-Main frame, 4-Upper calibration plate, 5-Upper calibration point, 6-Slide rail, 7-Lower calibration point, 8-Lower calibration plate, 9-Calibration device base, 10-High-precision grating ruler, 11-Upper connecting rod, 12-Bidirectional lead screw, 13-Lower connecting rod, 14-Servo motor, 15-Upper grating reading head, 16-Lower grating reading head, 17-First bullseye wheel, 18-Second bullseye wheel, 19-First lead screw nut, 20-Second lead screw nut. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] Please see Figures 1-4 This utility model provides a technical solution: a non-contact deformation measuring instrument calibration device, including a main frame 3 and a bidirectional lead screw 12. A calibration device base 9 is bolted to the lower end of the main frame 3. A touchscreen LCD display 2 is mounted on the upper front side of the main frame 3. A slide rail 6 is provided at the front end of the main frame 3. An upper connecting rod 11 and a lower connecting rod 13 are slidably arranged at the upper and lower ends of the slide rail 6, respectively. A first lead screw nut 19 and a second lead screw nut 20 are respectively fixed through the upper connecting rod 11 and the lower connecting rod 13. The internal rear end of the main frame 3 is equipped with a high-precision grating ruler 10. The upper grating reading head 15 and the lower grating reading head 16 are respectively provided on the upper and lower sides of the front end of the high-precision grating ruler 10. The upper connecting rod 11 and the lower connecting rod 13 are respectively equipped with an upper calibration plate 4 and a lower calibration plate 8. The lower end of the main frame 3 is equipped with a servo motor 14. The shaft end of the servo motor 14 is connected to a bidirectional lead screw 12. The upper end of the bidirectional lead screw 12 passes through the main frame 3 and is connected to the manual rotating handle 1. This design solves the calibration problem of all types of non-contact deformation measuring instruments.

[0020] In the first embodiment of this utility model: the main frame 3 and the calibration device base 9 are made of cast iron. First bullseye wheels 17 are embedded in the front sides of both the left and right ends of the upper connecting rod 11, and second bullseye wheels 18 are embedded in the front sides of both the left and right ends of the lower connecting rod 13. Both the two first bullseye wheels 17 and the two second bullseye wheels 18 slide against the left and right ends inside the slide rail 6. By adding the two first bullseye wheels 17 and the two second bullseye wheels 18, the smoothness of the upper connecting rod 11 and the lower connecting rod 13 sliding up and down within the slide rail 6 can be ensured. The upper grating reading head 15 and the lower grating reading head 16 are connected to the rear ends of the upper connecting rod 11 and the lower connecting rod 13, respectively. The added upper grating reading head 15 and lower grating reading head 16 can collect the up-and-down movement data of the upper connecting rod 11 and the lower connecting rod 13, and transmit this data to the touchscreen LCD display 2 for display via wires. The upper calibration plate 4 and the lower calibration plate 8 are respectively provided with multiple upper calibration points 5 and multiple lower calibration points 7 at their front ends. These multiple upper calibration points 5 and multiple lower calibration points 7 are all calibration dots or reflective points, thus allowing for the calibration of different types of non-contact deformation measuring instruments. The first lead screw nut 19 and the second lead screw nut 20 are respectively threaded onto the upper and lower sides of the double-acting lead screw 12. When the double-acting lead screw 12 rotates, the first lead screw nut 19 and the second lead screw nut 20 can be driven to move in opposite directions through the threaded mechanism.

[0021] As a second embodiment of this utility model, its working principle and working process are as follows:

[0022] Place this calibration device at the fixed position of the non-contact deformation measuring instrument to be calibrated, and power on both the calibration device and the measuring instrument.

[0023] Adjust the upper calibration plate 4 and the lower calibration plate 8 to be infinitely close by adjusting the button on the touch screen LCD display 2 or by turning the manual rotating handle 1. Adjust the measuring instrument to focus on the upper calibration plate 4 and the upper calibration point 5 (calibration dot or reflective point), and you can clearly see the upper calibration point 5 on the upper calibration plate 4 and the lower calibration point 7 (calibration dot or reflective point) on the lower calibration plate 8.

[0024] According to the calibration requirements, select the appropriate gauge length, and select two points in the vertical direction on the measuring instrument screen. One of them is the calibration dot or reflective point on the upper calibration plate 4, and the other is the calibration dot or reflective point on the lower calibration plate 8.

[0025] The data is simultaneously cleared on the measuring instrument and the touch screen LCD display 2. The servo motor 14 is controlled by the touch screen LCD display 2 or the manual rotating handle 1 is turned to rotate the bidirectional lead screw 12, causing the upper connecting rod 11 to move upward through the limit of the first lead screw nut 19 and the slide rail 6, while the lower connecting rod 13 moves downward through the limit of the second lead screw nut 20 and the slide rail 6.

[0026] The positions of the upper grating reading head 15 and the lower grating reading head 16 relative to the high-precision grating ruler 10 change, so data is displayed on the touch screen LCD 2. The positions of the calibration dots or reflective dots on the upper calibration plate 4 and the lower calibration plate 8 also change, and corresponding data is displayed on the measuring instrument.

[0027] According to the corresponding technical requirements, when adjusting to the corresponding value, compare the value of the measuring instrument with the value of the calibration device until the maximum measurement point that needs to be calibrated is reached. If the corresponding requirements are met, it is considered qualified. This process is repeated 3 times for full-range calibration. If the error meets the JJF standard, it is considered qualified.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A non-contact deformation measuring instrument calibration device, comprising a main frame (3) and a bidirectional lead screw (12), characterized in that: The lower end of the main frame (3) is bolted with a calibration device base (9). A touch screen LCD display (2) is mounted on the upper front side of the main frame (3). A slide rail (6) is provided at the front end of the main frame (3). An upper connecting rod (11) and a lower connecting rod (13) are slidably arranged at the upper and lower ends of the slide rail (6). A first lead screw nut (19) and a second lead screw nut (20) are fixed through the middle of the upper connecting rod (11) and the lower connecting rod (13). A high-precision ... The high-precision grating ruler (10) has an upper grating reading head (15) and a lower grating reading head (16) on the upper and lower sides of its front end, respectively. The upper connecting rod (11) and the lower connecting rod (13) are respectively equipped with an upper calibration plate (4) and a lower calibration plate (8). The servo motor (14) is installed at the lower end of the main frame (3). The shaft end of the servo motor (14) is connected to a bidirectional lead screw (12). The upper end of the bidirectional lead screw (12) passes through the main frame (3) and is connected to the manual rotating handle (1).

2. The non-contact deformation measuring instrument calibration device according to claim 1, characterized in that: The main frame (3) and the calibration device base (9) are made of cast iron.

3. The non-contact deformation measuring instrument calibration device according to claim 1, characterized in that: The upper connecting rod (11) has a first bullseye wheel (17) embedded on the front side of both the left and right ends, and the lower connecting rod (13) has a second bullseye wheel (18) embedded on the front side of both the left and right ends. The two first bullseye wheels (17) and the two second bullseye wheels (18) slide against each other inside the slide rail (6).

4. The non-contact deformation measuring instrument calibration device according to claim 1, characterized in that: The upper grating reading head (15) and the lower grating reading head (16) are respectively connected to the rear end of the upper connecting rod (11) and the rear end of the lower connecting rod (13).

5. The non-contact deformation measuring instrument calibration device according to claim 1, characterized in that: The front ends of the upper calibration plate (4) and the lower calibration plate (8) are respectively provided with multiple upper calibration points (5) and multiple lower calibration points (7).

6. The non-contact deformation measuring instrument calibration device according to claim 1, characterized in that: The first lead screw nut (19) and the second lead screw nut (20) are respectively fitted on the upper and lower sides of the double-acting lead screw (12) by means of threads.

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