Automatic offset scale calibrator

Abstract

The invention discloses an automatic offset scale calibrator, which relates to the technical field of measuring instruments, and comprises a calibration base, a sliding rail arranged on the calibration base along the length direction of the calibration base; the supporting mechanism is arranged on the verification base and used for supporting the offset scale and enabling the offset scale to be parallel to the sliding rail; the measuring block is arranged on the sliding rail in a sliding mode through a sliding block, the sliding block is connected with a driving device, and the driving device is used for driving the sliding block to slide along the sliding rail so that the measuring face of the measuring block can be attached to the pressing side plate of the offset scale; the displacement sensor is arranged on the verification base and is used for detecting the moving distance of the detection block; the image recognition device is used for collecting images of the measuring block and the offset scale so as to obtain a display numerical value of the offset scale; and the driving device, the displacement sensor and the image recognition device are all in signal connection with the control machine. According to the invention, the measurement accuracy and the working efficiency of the offset scale calibrator can be improved, and the labor cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of measuring instruments, in particular to an automatic support scale calibrator. Background Art

[0002] The gauge calibrator is mainly used to calibrate the standard of railway gauges. At present, there are mainly two types of calibrators: Type I gauge calibrator and Type II gauge calibrator. Among them, in the process of using Type I gauge calibrator to calibrate the gauge, it is necessary to manually move the slider and place the slider at each measuring point. The overall work efficiency is not high, and the manual positioning is not accurate, which affects the measurement stability. In the process of using Type II gauge calibrator to calibrate the gauge, the end side plate of Type II gauge calibrator cannot fit tightly with the gauge, resulting in inconsistency between the measurement reference and the working reference, affecting the accuracy of the calibration results; moreover, during the calibration process, it is necessary to manually move the gauge pressure side plate to each measuring block for measurement and calibration. The entire process takes a long time and has low work efficiency.

[0003] It can be seen that the current Type I stand scale calibrator and Type II stand scale calibrator both have the problem of low calibration efficiency and low accuracy of calibration results; therefore, an automated stand scale calibrator is provided to solve the above problems existing in the prior art. Summary of the invention

[0004] The purpose of the present invention is to provide an automated standoff scale calibrator to solve the problems existing in the above-mentioned prior art, thereby improving measurement accuracy and work efficiency and reducing labor costs.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides an automated standoff scale calibrator, comprising:

[0007] A calibration base, wherein a slide rail is provided on the calibration base along its length direction;

[0008] A supporting mechanism, the supporting mechanism is arranged on the calibration base and is used to support the distance ruler and make the distance ruler parallel to the slide rail;

[0009] A measuring block, wherein the measuring block is slidably disposed on the slide rail via a slider, and the slider is connected to a driving device, and the driving device is used to drive the slider to slide along the slide rail so that the measuring surface of the measuring block is in contact with the pressure side plate of the support ruler;

[0010] A displacement sensor, which is disposed on the calibration base and is used to detect the moving distance of the measuring block;

[0011] An image recognition device, the image recognition device is used to collect images of the measuring block and the offset ruler to obtain a display value of the offset ruler;

[0012] The control machine, the driving device, the displacement sensor and the image recognition device are all connected to the control machine by signal.

[0013] Preferably, a working reference line is set on the upper surface of the calibration base along its length direction, and the slide rail is arranged along the working reference line.

[0014] Preferably, the driving device comprises a servo motor, the output shaft of the servo motor is connected to a screw rod, the screw rod is threadedly connected to the slider, and the servo motor drives the screw rod to rotate, thereby driving the slider to slide back and forth along the slide rail.

[0015] Preferably, the supporting mechanism includes an end side plate and a supporting seat, the end side plate is vertically arranged at one end of the calibration base, the supporting seat is arranged at the other end of the calibration base and opposite to the end side plate, and the two ends of the spacing ruler are respectively supported on the end side plate and the supporting seat.

[0016] Preferably, the support seat is fixed to the calibration base by fastening screws.

[0017] Preferably, the measuring block is a square block, a side of the measuring block close to the end side plate is an auxiliary measuring surface, and a side of the measuring block close to the support seat is a measuring surface.

[0018] Preferably, the displacement sensor is a grating scale displacement sensor, including a grating scale and a reading head, the grating scale is arranged on the calibration base and parallel to the slide rail, and the reading head is arranged on the slide block.

[0019] Preferably, a mounting rod is further provided on one side of the calibration base, the mounting rod is parallel to the slide rail, and the grating ruler is arranged on the mounting rod.

[0020] Preferably, the image recognition device is a camera.

[0021] Preferably, the calibration base is made of aluminum alloy.

[0022] Compared with the prior art, the present invention has achieved the following technical effects:

[0023] In the present invention, the slider is connected to a driving device, which drives the slider to slide along the slide rail, instead of manually moving the slider to a fixed measuring point, thereby improving the accuracy of movement, ensuring the accuracy of measurement, and reducing labor costs; further, an image recognition device is provided to collect images of the measuring block and the distance scale to obtain the displayed value of the distance scale, and the current indication of the distance scale is read through the image recognition device and the control machine, thereby further improving the measurement accuracy of the distance scale calibrator, improving work efficiency, and reducing labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A top view of an automated standoff scale tester in an embodiment of the present invention;

[0026] Figure 2 It is a front view of the automated standoff scale calibrator in an embodiment of the present invention.

[0027] In the figure: 1-calibration base, 2-slide rail, 3-slider, 4-measuring block, 5-end side plate, 6-support seat, 7-fastening screw, 8-measuring surface, 9-auxiliary measuring surface, 10-image recognition device, 11-servo motor, 12-steel pipe, 13-grating ruler. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] The purpose of the present invention is to provide an automated standoff scale calibrator to solve the problems existing in the above-mentioned prior art, thereby improving measurement accuracy and work efficiency and reducing labor costs.

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Embodiment 1

[0032] like Figure 1 and Figure 2As shown, in this embodiment, an automated standoff scale calibrator is provided, which mainly includes:

[0033] A calibration base 1, wherein a slide rail 2 is provided on the calibration base 1 along its length direction;

[0034] A supporting mechanism, the supporting mechanism is arranged on the calibration base 1, and is used to support the distance ruler and make the distance ruler parallel to the slide rail 2;

[0035] A measuring block 4, wherein the measuring block 4 is slidably disposed on the slide rail 2 via a slider 3, and the slider 3 is connected to a driving device, and the driving device is used to drive the slider 3 to slide along the slide rail 2, so that the measuring surface 8 of the measuring block 4 is in contact with the pressure side plate of the support ruler;

[0036] A displacement sensor, which is disposed on the calibration base 1 and is used to detect the moving distance of the measuring block 4, specifically the moving distance of the measuring surface 8 of the measuring block 4;

[0037] An image recognition device 10, the image recognition device 10 is used to collect images of the measuring block 4 and the offset ruler to obtain a display value of the offset ruler;

[0038] The control machine, the driving device, the displacement sensor and the image recognition device 10 are all connected to the control machine signal. The control machine can control the driving device to drive the slider 3 and the measuring block 4 thereon to slide. The displacement sensor detects the moving distance of the measuring surface 8 of the measuring block 4, and transmits the measurement data to the control machine. The image recognition device 10 collects the images of the measuring block 4 and the support scale, and transmits the image to the control machine to obtain the display value of the support scale. The support scale is verified and calibrated by comparing the moving distance measured by the displacement sensor and the display value of the support scale.

[0039] Among them, the control machine is a mature existing technology in this field and can be selected according to specific work needs. For example, a computer can be directly used as the control machine.

[0040] In this embodiment, the slider 3 is connected to a driving device, which drives the slider 3 to slide along the slide rail 2, instead of manually moving the slider 3 to a fixed measuring point, thereby improving the accuracy of movement, thereby ensuring the accuracy of measurement, and reducing labor costs; moreover, an image recognition device 10 is provided to capture images of the measuring block 4 and the distance scale to obtain the displayed value of the distance scale, and the current indication of the distance scale is read through the image recognition device 10 and the control machine, thereby further improving the measurement accuracy of the distance scale calibrator, improving work efficiency, and reducing labor costs.

[0041] In this embodiment, a working reference line is set on the upper surface of the calibration base 1 along its length direction, and the slide rail 2 is arranged along the working reference line.

[0042] In this embodiment, the driving device mainly includes a servo motor 11, the output shaft of the servo motor 11 is connected to a screw rod, both ends of the screw rod can be rotatably installed on the calibration base 1 through bearing brackets, and the screw rod is threadedly connected to the slider 3. The servo motor 11 drives the screw rod to rotate, which can drive the slider 3 and the measuring block 4 thereon to slide back and forth along the slide rail 2.

[0043] Furthermore, it should be noted that other driving devices can be selected according to work needs, as long as they can drive the slider 3 to move and ensure the accuracy of the movement. For example, a hydraulic rod can be used as a driving device.

[0044] In this embodiment, the support mechanism mainly includes an end side plate 5 and a support seat 6. The end side plate 5 is vertically arranged at one end of the calibration base 1, and the support seat 6 is arranged at the other end of the calibration base 1 and arranged opposite to the end side plate 5. The two ends of the offset ruler are supported on the end side plate 5 and the support seat 6 respectively; specifically, the front end of the offset ruler is in contact with the end side plate 5, and the rear end is placed on the support seat 6. Among them, the support seat 6 is fixed to the calibration base 1 by fastening screws 7, and the end of the offset ruler close to the support seat 6 can also be fastened to the support seat 6 by fastening screws to ensure its stability.

[0045] In this embodiment, the measuring block 4 is a square block, a surface of the measuring block 4 close to the end side plate 5 is an auxiliary measuring surface 9 , and a surface of the measuring block 4 close to the support seat 6 is a measuring surface 8 .

[0046] In this embodiment, the displacement sensor is preferably a grating scale displacement sensor, which mainly includes a grating scale 13 and a reading head. The grating scale 13 is arranged on the calibration base 1 and is parallel to the slide rail 2. The reading head is arranged on the slider 3. The slider 3 drives the reading head to move synchronously, and then the moving distance of the measuring block 4 is obtained through the reading head and the grating scale 13.

[0047] In this embodiment, a mounting rod is further provided on one side of the calibration base 1, the mounting rod is parallel to the slide rail 2, and the grating ruler 13 is provided on the mounting rod; wherein the mounting rod is preferably a steel pipe 12 with one end fixed.

[0048] In this embodiment, the image recognition device 10 is preferably a camera, specifically a high-definition camera.

[0049] In this embodiment, the main structure of the automated distance scale calibrator is made of aluminum alloy, and some key structures are made of steel, which effectively reduces the overall weight, makes the calibration process more convenient, and saves effort in carrying; specifically, the calibration base 1 can be made of aluminum alloy, and key structures such as the slide rail 2 are made of steel.

[0050] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An automated standoff scale calibrator, characterized in that: include: A calibration base, wherein a slide rail is provided on the calibration base along its length direction; A supporting mechanism, the supporting mechanism is arranged on the calibration base and is used to support the distance ruler and make the distance ruler parallel to the slide rail; A measuring block, wherein the measuring block is slidably disposed on the slide rail via a slider, and the slider is connected to a driving device, and the driving device is used to drive the slider to slide along the slide rail so that the measuring surface of the measuring block is in contact with the pressure side plate of the support ruler; A displacement sensor, which is disposed on the calibration base and is used to detect the moving distance of the measuring block; An image recognition device, the image recognition device is used to collect images of the measuring block and the offset ruler to obtain a display value of the offset ruler; The control machine, the driving device, the displacement sensor and the image recognition device are all connected to the control machine by signal.

2. The automated standoff scale tester according to claim 1, characterized in that: A working reference line is set on the upper surface of the calibration base along its length direction, and the slide rail is arranged along the working reference line.

3. The automated standoff scale tester according to claim 1, characterized in that: The driving device comprises a servo motor, the output shaft of the servo motor is connected with a lead screw, the lead screw is threadedly connected with the slider, and the lead screw is driven to rotate by the servo motor, so as to drive the slider to slide back and forth along the slide rail.

4. The automated standoff scale tester according to claim 1, characterized in that: The supporting mechanism includes an end side plate and a supporting seat. The end side plate is vertically arranged at one end of the calibration base, and the supporting seat is arranged at the other end of the calibration base and opposite to the end side plate. The two ends of the spacing ruler are respectively supported on the end side plate and the supporting seat.

5. The automated standoff scale tester according to claim 4, characterized in that: The support seat is fixed on the calibration base by fastening screws.

6. The automated standoff scale tester according to claim 4, characterized in that: The measuring block is a square block, a side of the measuring block close to the end side plate is an auxiliary measuring surface, and a side of the measuring block close to the support seat is a measuring surface.

7. The automated standoff scale tester according to claim 1, characterized in that: The displacement sensor is a grating ruler displacement sensor, including a grating ruler and a reading head. The grating ruler is arranged on the calibration base and is parallel to the slide rail. The reading head is arranged on the slide block.

8. The automated standoff scale tester according to claim 7, characterized in that: A mounting rod is also provided on one side of the calibration base, the mounting rod is parallel to the slide rail, and the grating ruler is arranged on the mounting rod.

9. The automated standoff scale tester according to claim 1, characterized in that: The image recognition device is a camera.

10. The automated standoff scale tester according to claim 1, characterized in that: The material of the calibration base is aluminum alloy.

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