Micrometer calibrating device

Abstract

The utility model relates to the technical field of metering, and provides a micrometer calibrating device, which comprises a standard gauge block, a fixing mechanism, a driving mechanism, an acquisition mechanism and an analysis processing system. Wherein the length direction of the standard gauge block is parallel to the first linear direction; the fixing mechanism is suitable for fixing the micrometer; the driving mechanism is in driving connection with the microdrum and the force measuring device; the acquisition mechanism slides along the first linear direction and is suitable for acquiring the length value of the standard gauge block, the distance value between the measuring anvil and the micrometric screw and a reading value formed by the scale of the fixed sleeve and the scale of the microdrum; the analysis processing system is electrically connected with the driving mechanism and is suitable for controlling the driving mechanism; and the analysis processing system is electrically connected with the acquisition mechanism and is suitable for analyzing and processing errors among the reading value, the distance value and the length value, so that the verification error of the micrometer is reduced, and the verification efficiency of the micrometer is improved.

Description

Technical Field

[0001] This utility model relates to the field of metrology technology, specifically to a micrometer calibration device. Background Technology

[0002] An outside micrometer, also called a screw micrometer, is often simply referred to as a "micrometer". It is a more precise length measuring instrument than a vernier caliper.

[0003] A micrometer generally consists of a fixed frame, an anvil, a micrometer screw, a fixed sleeve, a micrometer thimble, a force measuring device, and a locking device. A typical micrometer has a horizontal line on the fixed sleeve, with two rows of graduations spaced 1 mm apart, one above and one below. The upper graduation is positioned precisely between two adjacent lower graduations. The micrometer thimble is a horizontal line dividing the circumference into 50 equal parts; it rotates. In use, the micrometer's anvil and micrometer screw are used to clamp the object being measured. Ensuring both ends are in contact with the object, the length of the object is determined by reading the graduations on the micrometer thimble and fixed sleeve.

[0004] Because the micrometer screw is screwed to the frame, rotating the micrometer drum reduces the distance between the micrometer screw and the anvil fixed to the frame, bringing it into contact with the object being measured. Over time, the accuracy of a micrometer can change, therefore, micrometers require periodic calibration.

[0005] However, in the relevant micrometer calibration techniques, the micrometer is generally used manually to measure the standard gauge block, and then the reading on the micrometer is read. The error between the reading and the standard gauge block is compared to determine whether the micrometer is qualified. This calibration technique has a large error and the manual calibration is inefficient. Utility Model Content

[0006] In view of the shortcomings of the prior art, the present invention provides a micrometer calibration device to solve at least one of the above-mentioned technical defects in the prior art, reduce the calibration error of the micrometer, and improve the calibration efficiency of the micrometer.

[0007] To achieve the objective of this utility model, this utility model provides a micrometer calibration device, which includes:

[0008] A standard gauge block, wherein the length direction of the standard gauge block is parallel to the direction of the first straight line;

[0009] A fixing mechanism is provided for fixing the micrometer.

[0010] A drive mechanism is connected to the differential cylinder and the force measuring device.

[0011] The acquisition mechanism slides along the first straight line and is suitable for acquiring the length value of the standard gauge block, the distance between the anvil and the micrometer screw, and the reading value formed by the scale of the fixed sleeve and the scale of the micrometer drum.

[0012] An analysis and processing system, electrically connected to the drive mechanism, is adapted to control the drive mechanism;

[0013] The analysis and processing system is electrically connected to the acquisition mechanism and is suitable for analyzing and processing the error among the reading value, the distance value, and the length value.

[0014] Preferably, the acquisition mechanism includes a camera device, a slide rail, and a slider slidably connected to the slide rail. The camera device is mounted on the slider, and the length direction of the slide rail is arranged along the first straight line direction.

[0015] Preferably, the driving mechanism includes a first driving member, a second driving member, and a driving motor;

[0016] The first end of the first driving member is connected to the motor shaft of the drive motor, and the second end of the first driving member can clamp the force measuring device.

[0017] The first end of the second driving member is connected to the motor shaft of the drive motor, and the second end of the second driving member can clamp the micrometer drum.

[0018] Preferably, the drive mechanism further includes a first connecting shaft and a second connecting shaft that are interconnected;

[0019] The first connecting shaft is a rigid shaft, and the second connecting shaft is a flexible shaft;

[0020] The first end of the first driving member and the first end of the second driving member are connected to the first connecting shaft, and the second connecting shaft is connected to the motor shaft of the drive motor.

[0021] Preferably, the drive mechanism further includes a torque sensor, which is disposed between the first connecting shaft and the second connecting shaft.

[0022] Preferably, the first straight line direction is horizontal.

[0023] The axis of the standard gauge block is on the same straight line as the first straight line direction.

[0024] Preferably, the lens of the camera device is oriented perpendicular to the first straight line direction.

[0025] Preferably, the analysis and processing system is adapted to analyze and process the displacement of the acquisition mechanism.

[0026] The beneficial effects of this utility model are as follows: The micrometer calibration device provided by this utility model sets a standard gauge block, with the length direction of the standard gauge block parallel to the first straight line direction where the axis of the micrometer's measuring components is located; then, the micrometer tumbler and the force measuring device are driven by a drive mechanism to complete the micrometer's measurement action; and a data acquisition mechanism that slides along the first straight line direction collects the length value of the standard gauge block, the distance value between the anvil and the micrometer screw, and the reading value formed by the scale of the fixed sleeve and the scale of the micrometer tumbler; finally, the length value, distance value, and reading value are input into the analysis and processing system, which analyzes and processes the error between the reading value, distance value, and length value, and determines whether the micrometer is qualified by referring to the corresponding micrometer error table based on the error; in this way, the operation process of manually using the micrometer to measure the standard gauge block and then reading the micrometer is avoided, reducing the error in the micrometer calibration operation and improving the calibration efficiency and accuracy. Attached Figure Description

[0027] The above and other objects, features, and advantages of this invention will become clearer through a more detailed description of the preferred embodiments shown in the accompanying drawings. The same reference numerals indicate the same parts throughout the drawings, and the drawings are not intentionally drawn to scale with actual dimensions; the focus is on illustrating the gist of the invention.

[0028] Figure 1 A schematic diagram illustrating the structural principle of the micrometer calibration device provided in this embodiment of the utility model.

[0029] In the picture:

[0030] 1. Scale frame; 2. Anvil; 3. Micrometer screw; 4. Fixing sleeve; 5. Differential drum; 6. Force measuring device; 7. Locking device; L0, length value; L, distance value; L1, reading value;

[0031] 100. Standard gauge blocks;

[0032] 200. Fixed mechanism;

[0033] 300. Drive mechanism; 310. First drive component; 320. Second drive component; 330. Drive motor; 340. First connecting shaft; 350. Second connecting shaft; 360. Torque sensor;

[0034] 400. Data acquisition organization; 410. Camera equipment;

[0035] 500. Analysis and processing system. Detailed Implementation

[0036] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings.

[0037] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to and integrated with the other component, or there may be an intervening component present. The terms "mounted," "one end," "the other end," and similar expressions used in this document are for illustrative purposes only.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this applies. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0039] The following is combined Figure 1 The embodiments of this utility model will be described below. It should be understood that the following description is merely an illustrative embodiment of this utility model and does not constitute any limitation on this utility model.

[0040] An outside micrometer, also called a micrometer screw gauge, is often simply referred to as a "micrometer". A micrometer generally includes a fixed frame 1, an anvil 2, a micrometer screw 3, a fixed sleeve 4, a micrometer drum 5, a force measuring device 6, and a locking device 7.

[0041] The ruler frame 1 is U-shaped, with the anvil 2 fixed at the first end of the U-shaped ruler frame 1 and the micrometer screw 3 fixed at the second end of the U-shaped ruler frame 1. The anvil 2 and the micrometer screw 3 are arranged opposite each other along their own axes. The axes of the anvil 2, the micrometer screw 3, the fixing sleeve 4, the micrometer cylinder 5, the force measuring device 6, and the locking device 7 are each arranged along a first straight line direction.

[0042] See Figure 1 This utility model embodiment provides a micrometer calibration device, which includes a standard gauge block 100, a fixing mechanism 200, a driving mechanism 300, a data acquisition mechanism 400, and an analysis and processing system 500.

[0043] The length direction of the standard gauge block 100 is parallel to the direction of the first straight line.

[0044] The fixing mechanism 200 can fix the micrometer. The fixing mechanism 200 can be two fixing blocks. The first fixing block fixes the bottom of the U-shaped ruler frame 1, and the second fixing block fixes the first end of the U-shaped ruler frame 1.

[0045] The drive mechanism 300 is connected to the micrometer cylinder 5 and the force measuring device 6, and can drive the micrometer cylinder 5 and the force measuring device 6 to rotate, so that the micrometer screw 3 of the micrometer can move closer to or further away from the anvil 2, thereby realizing the measurement operation of the micrometer.

[0046] The acquisition mechanism 400 slides along the first straight line direction and can acquire the length value L0 of the standard gauge block 100, the distance value L between the anvil 2 and the micrometer screw 3, and the reading value L1 formed by the scale of the fixed sleeve 4 and the scale of the micrometer cylinder 5.

[0047] The analysis and processing system 500 is electrically connected to the drive mechanism 300 and can control the drive mechanism 300 to adjust the distance between the micrometer screw 3 and the anvil 2 of the micrometer.

[0048] The analysis and processing system 500 is electrically connected to the acquisition mechanism 400. It can analyze and process the error between the reading value L1, the distance value L, and the length value L0, and can complete the calibration of the micrometer.

[0049] In a specific embodiment, when the length value L0 of the standard gauge block 100 is 10mm, the analysis and processing system 500 controls the drive mechanism 300 to drive the micrometer cylinder 5 and the force measuring device 6 to rotate, so as to adjust the reading value L1 formed by the scale of the fixed sleeve 4 and the scale of the micrometer cylinder 5 to 10mm; at this time, the acquisition mechanism 400 acquires the distance value L between the anvil 2 and the micrometer screw 3 and inputs it into the analysis and processing system 500. If the distance value L is 9mm, that is, the error between the length value L0 and the distance value L (or the length value L0) is 1mm, the micrometer error standard table can be used to determine whether the micrometer is qualified.

[0050] In another specific embodiment, when the length value L0 of the standard gauge block 100 is 10mm, the analysis and processing system 500 controls the drive mechanism 300 to drive the micrometer cylinder 5 and the force measuring device 6 to rotate, so as to adjust the distance value L between the anvil 2 and the micrometer screw 3 to 10mm. At this time, the acquisition mechanism 400 acquires the reading value L1 formed by the scale of the fixed sleeve 4 and the scale of the micrometer cylinder 5 and inputs it into the analysis and processing system 500. If the reading value L1 is 9mm, that is, the error between the reading value L1 and the distance value L (or the length value L0) is 1mm, the micrometer error standard table can be used to determine whether the micrometer is qualified.

[0051] It is understood that the micrometer calibration device provided in the embodiments of this utility model sets a standard gauge block 100, with the length direction of the standard gauge block 100 parallel to the first straight line direction where the axis of the micrometer's measuring components lies; then, the driving mechanism 300 drives the micrometer cylinder 5 and the force measuring device 6 to complete the micrometer's measuring action; and the acquisition mechanism 400, which slides along the first straight line direction, acquires the length value L0 of the standard gauge block 100, the distance value L between the anvil 2 and the micrometer screw 3, and the scale and differential of the fixed sleeve 4, respectively. The reading value L1 is formed by the scale of cylinder 5; finally, the length value L0, distance value L, and reading value L1 are input into the analysis and processing system 500. The analysis and processing system 500 analyzes and processes the error between the reading value L1, distance value L, and length value L0. Based on the error and referring to the corresponding micrometer error table, it can be determined whether the micrometer is qualified. In this way, the operation process of manually using a micrometer to measure the standard gauge block 100 and then reading the micrometer can be avoided, reducing the error of micrometer calibration and improving calibration efficiency and accuracy.

[0052] Specifically, the data acquisition mechanism 400 includes a camera device 410, a slide rail (not shown in the attached diagram), and a slider (not shown in the attached diagram) slidably connected to the slide rail. The camera device 410 is mounted on the slider, and the length direction of the slide rail is set along a first linear direction. The camera device 410 can move along the first linear direction through the action of the slider and the slide rail to acquire the length value L0 of the standard gauge block 100, the distance value L between the anvil 2 and the micrometer screw 3, and the reading value L1 formed by the scale of the fixed sleeve 4 and the scale of the micrometer cylinder 5. The slider and slide rail simplify the structure of the data acquisition mechanism 400 and save costs.

[0053] In some embodiments of this utility model, the drive mechanism 300 includes a first drive member 310, a second drive member 320, and a drive motor 330.

[0054] The first end of the first driving member 310 is connected to the motor shaft of the drive motor 330, and the second end of the first driving member 310 can clamp the force measuring device 6. The first driving member 310 can be a U-shaped clamp, the first end of which is fixed on the motor shaft, and the second end of which clamps the force measuring device 6.

[0055] The first end of the second driving member 320 is connected to the motor shaft of the drive motor 330, and the second end of the second driving member 320 can clamp the micrometer drum 5. The second driving member 320 can be a U-shaped clamp, with the first end of the U-shaped clamp fixed on the motor shaft and the second end of the U-shaped clamp clamping the micrometer drum 5.

[0056] By using the first driving component to clamp the force measuring device 6 and the second driving component to clamp the differential cylinder 5, a single drive motor 330 can drive the coaxially arranged force measuring device 6 and differential cylinder 5 to rotate. The structure is simple and the operation is convenient.

[0057] In some embodiments of this utility model, in order to reduce the rotational error of the force measuring device 6 and the micrometer drum 5, the calibration accuracy of the micrometer calibration device is improved.

[0058] The drive mechanism 300 also includes a first connecting shaft 340 and a second connecting shaft 350 that are interconnected.

[0059] The first connecting shaft 340 can be a rigid shaft, and the second connecting shaft 350 can be a flexible shaft. The flexible shaft can avoid and reduce the deviation in the concentricity of the second connecting shaft 350 and the motor shaft of the drive motor 330, thereby reducing the rotation error of the force measuring device 6 and the differential cylinder 5.

[0060] The first end of the first drive member 310 and the first end of the second drive member 320 are connected to the first connecting shaft 340, and the second connecting shaft 350 is connected to the motor shaft of the drive motor 330.

[0061] Of course, to further reduce the rotational error of the force measuring device 6 and the differential cylinder 5, and to prevent the first drive member 310 and the second drive member 320 from excessively twisting the force measuring device 6 and the differential cylinder 5, the drive mechanism 300 also includes a torque sensor 360, which is disposed between the first connecting shaft 340 and the second connecting shaft 350. The torque sensor 360 can monitor the torque value of the force measuring device 6 and the differential cylinder 5 and feed the torque value back to the analysis and processing system 500, so that the drive motor 330 can stop driving or continue driving.

[0062] In some embodiments of this utility model, the first straight line direction can be horizontal, and the axis of the standard gauge block 100 is on the same straight line as the first straight line direction. In this case, the axis of the standard gauge block 100 is horizontal, and the acquisition mechanism 400 is also horizontal, making the data acquired by the acquisition mechanism 400 more accurate.

[0063] Furthermore, the lens of the camera device is oriented perpendicular to the first straight line direction, meaning that when the lens of the camera device moves, it can be perpendicular to the length direction of the standard gauge block 100 and also perpendicular to the distance direction between the anvil 2 and the micrometer screw 3, which can further improve the accuracy of the acquisition mechanism 400.

[0064] In some embodiments of this utility model, the analysis and processing system 500 can analyze and process the displacement of the acquisition mechanism 400. By inputting the displacement of the acquisition mechanism 400 into the analysis and processing system 500, the error between the reading value L1, the distance value L, and the length value L0 can be analyzed and calculated, thereby completing the calibration of the micrometer.

[0065] Specifically, in combination Figure 1 The analysis and processing system 500 outputs the length value L0 of the standard gauge block 100 to the drive mechanism 300 and the acquisition mechanism 400. The drive mechanism 300 drives the micrometer tumbler 5 and the force measuring device 6, so that the scale of the fixed sleeve 4 and the scale of the micrometer tumbler 5 form a reading value L1 (the length value L0 equals the reading value L1). When the acquisition mechanism 400 moves from the left end to the right end of the standard gauge block 100, the analysis and processing system 500 records it as L0; when the acquisition mechanism 400 moves from the end of the anvil 2 to the end of the micrometer screw 3, the analysis and processing system 500 records it as L. The analysis and processing system 500 can determine whether the micrometer is suitable by analyzing and calculating the error values ​​of L0 and L. This enables the micrometer calibration device to verify errors through displacement, improving the accuracy of the calibration device.

[0066] In this specification, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0067] In the description of this specification, the use of terms such as "preferred embodiment," "another embodiment," "some embodiments," "other embodiments," or "specific example," etc., refers to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0068] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A micrometer testing device, said micrometer comprising a micrometer stand and a measuring anvil, a micrometer screw, a fixed sleeve, a differential cylinder and a force measuring device arranged along a first straight line, characterized in that The application relates to a standard micrometer device, comprising: a standard gauge, the length direction of which is parallel to the first straight line direction; a fixing mechanism, suitable for fixing the micrometer; a driving mechanism, drivingly connected with the differential cylinder and the force measuring device; a collecting mechanism, sliding along the first straight line direction, suitable for collecting the length value of the standard gauge, the distance value between the anvil and the micrometer screw, and the reading value formed by the scale of the fixed sleeve and the scale of the differential cylinder; an analysis processing system, electrically connected with the driving mechanism, suitable for controlling the driving mechanism; the analysis processing system is electrically connected with the collecting mechanism, and is suitable for analyzing and processing the error among the reading value, the distance value and the length value.

2. The micrometer testing device of claim 1, wherein The collecting mechanism comprises a camera device, a sliding rail and a sliding block slidingly connected with the sliding rail, the camera device is installed on the sliding block, and the length direction of the sliding rail is arranged along the first straight line direction.

3. The micrometer testing device of claim 1, wherein, The driving mechanism comprises a first driving member, a second driving member and a driving motor; the first end of the first driving member is connected with the motor shaft of the driving motor, and the second end of the first driving member can clamp the force measuring device; the first end of the second driving member is connected with the motor shaft of the driving motor, and the second end of the second driving member can clamp the differential cylinder.

4. The micrometer testing device of claim 3, wherein The driving mechanism further comprises a first connecting shaft and a second connecting shaft connected with each other; the first connecting shaft is a rigid shaft, and the second connecting shaft is a flexible shaft; the first end of the first driving member and the first end of the second driving member are connected to the first connecting shaft, and the second connecting shaft is connected to the motor shaft of the driving motor.

5. The micrometer testing device of claim 4, wherein, The driving mechanism further comprises a torsion sensor, which is arranged between the first connecting shaft and the second connecting shaft.

6. The micrometer testing device of claim 1, wherein, The first straight line direction is a horizontal direction, the axis of the standard gauge is located on the same straight line as the first straight line direction.

7. The micrometer testing device of claim 2, wherein, The lens of the camera device faces the direction perpendicular to the first straight line direction.

8. The micrometer testing device of claim 1, wherein, The analysis processing system is suitable for analyzing and processing the displacement of the collecting mechanism.

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