Micrometer calibrating device

Abstract

The utility model relates to the technical field of metering, and provides a micrometer calibrating device, which comprises a measuring mechanism, a fixing mechanism, a driving mechanism, an acquisition mechanism and an analysis processing system. Wherein the fixing mechanism is used 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 acquires a 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 measuring mechanism is connected with the microdrum and measures the displacement value of the microdrum in the first linear direction. The analysis processing system is electrically connected with the driving mechanism and controls the driving mechanism; the analyzing and processing system is electrically connected with the collecting mechanism and the measuring mechanism and used for analyzing and processing errors among the reading value, the distance value and the displacement value. According to the utility model, errors of micrometer verification operation are reduced, and verification efficiency and verification accuracy are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of measurement technology, specifically relates to a micrometer testing device. BACKGROUND

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

[0003] The micrometer generally comprises a fixed ruler, a measuring anvil, a micrometer screw, a fixed sleeve, a differential cylinder, a force measuring device and a locking device. The fixed sleeve of the ordinary micrometer has a horizontal line, and there are a column of 1mm-interval scale lines above and below the line, and the scale line above is exactly in the middle of the two adjacent scale lines below. The scale line on the differential cylinder is a horizontal line that divides the circumference into 50 equal parts, and it is in rotary motion. When in use, the measuring anvil and the micrometer screw of the micrometer are used to clamp the object to be measured, and the length value of the object to be measured is determined by reading the scale values on the differential cylinder and the fixed sleeve under the condition that the two end surfaces are in contact with the object.

[0004] Since the micrometer screw of the micrometer is screw-connected with the ruler, the distance between the micrometer screw and the measuring anvil fixed on the ruler is reduced by rotating the differential cylinder to contact the object to be measured. With the passage of time, the accuracy of the micrometer will change, so the micrometer needs to be periodically tested.

[0005] However, in the related micrometer testing technology, the micrometer is generally used manually to measure the standard gauge block, and then the reading on the micrometer is read out to determine whether the micrometer is qualified by comparing the error between the reading and the standard gauge block. Such testing technology has a large error, and the manual testing efficiency is low. CONTENT OF THE UTILITY MODEL

[0006] In view of the deficiencies of the prior art, the utility model provides a micrometer testing device to solve at least one of the above technical defects in the prior art, reduce the testing error of the micrometer, and improve the testing efficiency of the micrometer.

[0007] In order to achieve the purpose of the utility model, the utility model provides a micrometer testing device, which comprises:

[0008] A fixing mechanism is adapted to fix the micrometer;

[0009] A driving mechanism is drivingly connected with the differential cylinder and the force measuring device;

[0010] A collecting mechanism is adapted to collect the distance value between the measuring anvil and the micrometer screw and the reading value constituted by the scale of the fixed sleeve and the scale of the differential cylinder, and slides along the first straight line direction;

[0011] a measuring mechanism connected with the differential cylinder and adapted to measure the displacement value of the differential cylinder in the first linear direction;

[0012] an analysis processing system electrically connected with the driving mechanism and adapted to control the driving mechanism;

[0013] the analysis processing system is electrically connected with the collecting mechanism and the measuring mechanism, and is adapted to analyze and process the error among the reading value, the distance value and the displacement value.

[0014] Preferably, the measuring mechanism comprises a standard linear scale, a connecting rod and a reading device.

[0015] The length direction of the standard linear scale is arranged along the first linear direction, the reading device is slidingly connected with the standard linear scale, and the reading device is connected with the second driving member through the connecting rod.

[0016] Preferably, 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 linear direction.

[0017] Preferably, the driving mechanism comprises a first driving member, a second driving member and a driving motor.

[0018] 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.

[0019] 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.

[0020] Preferably, the driving mechanism further comprises a first connecting shaft and a second connecting shaft connected with each other.

[0021] The first connecting shaft is a rigid shaft, and the second connecting shaft is a flexible shaft.

[0022] 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.

[0023] Preferably, the driving mechanism further comprises a torsion sensor arranged between the first connecting shaft and the second connecting shaft.

[0024] Preferably, the first linear direction is a horizontal direction.

[0025] Preferably, the lens of the camera device is directed perpendicularly to the first linear direction.

[0026] Preferably, the analysis processing system is adapted to analyze the displacement of the collection mechanism.

[0027] The micrometer testing device has the advantages that: the micrometer testing device is provided with a measuring mechanism, the measuring mechanism is connected with a differential cylinder to measure the displacement value of the differential cylinder in a first linear direction, a driving mechanism is used to drive the differential cylinder and a force measuring device to complete the measurement of the micrometer, a collection mechanism is used to collect 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, and the displacement value, the distance value and the reading value are input into an analysis processing system to analyze the error between the reading value, the distance value and the displacement value, and the micrometer is determined to be qualified according to the error and a corresponding micrometer error table, so that the operation process of manually using the micrometer to measure the standard block and then reading the reading on the micrometer is avoided, the error of the micrometer testing operation is reduced, and the testing efficiency and the testing accuracy are improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which preferred embodiments of the present application are shown by way of illustrative example. Like reference numerals in the drawings denote like elements, and the drawings are not necessarily to scale, with emphasis being placed upon illustrating the principles of the present application.

[0029] Figure 1 A structure principle schematic view of the micrometer testing device provided by the embodiment of the present application.

[0030] In the drawings:

[0031] 1, ruler stand; 2, anvil; 3, micrometer screw; 4, fixed sleeve; 5, differential cylinder; 6, force measuring device; 7, locking device; L0, displacement value; L, distance value; L1, reading value;

[0032] 100, measuring mechanism; 110, standard linear scale; 120, connecting rod; 130, reader;

[0033] 200, fixing mechanism;

[0034] 300, driving mechanism; 310, first driving member; 320, second driving member; 330, driving motor; 340, first connecting shaft; 350, second connecting shaft; 360, torsion sensor;

[0035] 400, collection mechanism; 410, camera equipment;

[0036] 500, analysis processing system. DETAILED DESCRIPTION

[0037] For the convenience of understanding the utility model, the following will be described more fully with reference to the relevant drawings.

[0038] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element and integrated as a whole, or a middle element can exist at the same time. The terms "mount", "one end", "the other end" and similar expressions used herein are only for illustrative purposes.

[0039] 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 document belongs. The terminology used in the specification herein is for the purpose of describing specific embodiments only and is not intended to be limiting of the present utility model. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0040] The following will be described in conjunction with Figure 1 The embodiments of the utility model are described. It should be understood that the following description is only a schematic embodiment of the utility model and does not constitute any limitation on the utility model.

[0041] The outer diameter micrometer, also called screw micrometer, is often simply referred to as "micrometer". The micrometer generally includes a fixed ruler 1, a measuring anvil 2, a micrometer screw 3, a fixed sleeve 4, a differential cylinder 5, a force measuring device 6 and a locking device 7.

[0042] The ruler 1 is U-shaped, the measuring anvil 2 is fixed at the first end of the U-shaped ruler 1, the micrometer screw 3 is fixed at the second end of the U-shaped ruler 1, and the measuring anvil 2 and the micrometer screw 3 are oppositely arranged along their own axes. The axes of the measuring anvil 2, the micrometer screw 3, the fixed sleeve 4, the differential cylinder 5, the force measuring device 6 and the locking device 7 are arranged along the first straight line direction.

[0043] Referring to Figure 1 The utility model embodiment provides a micrometer testing device, the micrometer testing device includes measuring mechanism 100, fixed mechanism 200, drive mechanism 300, acquisition mechanism 400 and analysis processing system 500.

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

[0045] The drive mechanism 300 is drivingly connected with the differential cylinder 5 and the force measuring device 6, can drive the differential cylinder 5 and the force measuring device 6 to rotate, make the micrometer screw 3 of micrometer can be close to or far from the measuring anvil 2, realize the measuring operation action of micrometer.

[0046] The collection mechanism 400 slides along the first linear direction, and can collect the distance value L between the measuring 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 differential cylinder 5.

[0047] The measurement mechanism 100 is connected with the differential cylinder 5, and can measure the displacement value L0 of the differential cylinder 5 in the first linear direction.

[0048] The analysis processing system 500 is electrically connected with the driving mechanism 300, and can control the driving mechanism 300 to adjust the distance between the micrometer screw 3 and the measuring anvil 2 of the micrometer.

[0049] The analysis processing system 500 is electrically connected with the collection mechanism 400 and the measurement mechanism 100, can analyze and process the error among the reading value L1, the distance value L and the displacement value L0, and can complete the verification of the micrometer.

[0050] In a specific embodiment, a preset measurement value (for example, 10 mm) is input into the analysis processing system 500, the analysis processing system 500 controls the driving mechanism 300 to drive the differential 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 differential cylinder 5 to 10 mm; at this time, the collection mechanism 400 collects the distance value L between the measuring anvil 2 and the micrometer screw 3 and inputs the distance value L into the analysis processing system 500, and the measurement mechanism 100 inputs the displacement value L0 into the analysis processing system 500.

[0051] If the displacement value L0 is 10 mm and the distance value L is 10 mm, it indicates that the error among the reading value L1, the distance value L and the displacement value L0 is zero, and the micrometer is qualified.

[0052] If the displacement value L0 is 10 mm and the distance value L is 9 mm, it indicates that the error among the distance value L and the reading value L1 and the displacement value L0 is 1 mm, and the micrometer can be judged whether it is qualified according to the error standard table of the micrometer.

[0053] If the displacement value L0 is 9 mm and the distance value L is 10 mm, it indicates that the error among the distance value L and the reading value L1 and the displacement value L0 is 1 mm, and the micrometer can be judged whether it is qualified according to the error standard table of the micrometer.

[0054] It can be understood that the micrometer testing device provided by the embodiment of the utility model, through setting measurement mechanism 100, measurement mechanism 100 is connected with differential cylinder 5 to measure the displacement value L0 of differential cylinder 5 in the first linear direction and form the standard measurement value, then through driving mechanism 300 driving differential cylinder 5 and force measuring device 6, the measurement action of micrometer is completed, and the distance value L between measuring anvil 2 and micrometer screw 3 and the reading value L1 formed by the scale of fixed sleeve 4 and the scale of differential cylinder 5 are collected respectively by using collection mechanism 400 sliding along the first linear direction, finally the displacement value L0, distance value L and reading value L1 are input into analysis processing system 500, the error between reading value L1, distance value L and displacement value L0 is analyzed and processed through analysis processing system 500, and whether the micrometer is qualified can be judged according to the error corresponding to the micrometer error table, so that the operation process that manual micrometer is used to measure standard gauge block and then the reading on the micrometer is read out can be avoided, the error of micrometer testing operation is reduced, and the testing efficiency and the testing accuracy are improved.

[0055] Specifically, the measurement mechanism 100 comprises a standard linear scale 110, a connecting rod 120 and a reader 130.

[0056] The length direction of the standard linear scale 110 is arranged along the first linear direction, the reader 130 is slidingly connected with the standard linear scale 110, and the reader 130 is connected with the second driving part 320 through the connecting rod 120. When the differential cylinder 5 moves along the first linear direction under the driving of the driving mechanism 300, the connecting rod 120 also moves along the first linear direction, and the reader 130 can read the reading of the connecting rod 120 on the standard linear scale 110, that is, the displacement value L0 of the differential cylinder 5 in the first linear direction. The measurement mechanism 100 is composed of the standard linear scale 110, the connecting rod 120 and the reader 130, and has the advantages of simpler structure, higher accuracy and cost saving.

[0057] The collection mechanism 400 comprises a camera device 410, a sliding rail (not shown in the drawings) and a sliding block (not shown in the drawings) slidingly connected with the sliding rail, the camera device 410 is installed on the sliding block, and the length direction of the sliding rail is arranged along the first linear direction. The camera device 410 can move along the first linear direction through the action of the sliding block and the sliding rail, so as to collect the distance value L between the measuring 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 differential cylinder 5. The sliding block and the sliding rail make the structure of the collection mechanism 400 simpler and can save costs.

[0058] In some embodiments of the utility model, the driving mechanism 300 comprises a first driving part 310, a second driving part 320 and a driving motor 330.

[0059] The first end of the first driving member 310 is connected with the motor shaft of the driving 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 small clamp, the first end of the U-shaped small clamp is fixed on the motor shaft, and the second end of the U-shaped small clamp clamps the force measuring device 6.

[0060] The first end of the second driving member 320 is connected with the motor shaft of the driving motor 330, and the second end of the second driving member 320 can clamp the differential cylinder 5. The second driving member 320 can be a U-shaped large clamp, the first end of the U-shaped large clamp is fixed on the motor shaft, and the second end of the U-shaped large clamp clamps the differential cylinder 5.

[0061] By clamping the force measuring device 6 by the first driving member 310 and clamping the differential cylinder 5 by the second driving member, one driving 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.

[0062] In addition, in order to reduce the rotation error of the force measuring device 6 and the differential cylinder 5 and improve the calibration accuracy of the micrometer calibration device.

[0063] The driving mechanism 300 further comprises a first connecting shaft 340 and a second connecting shaft 350 connected with each other.

[0064] 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 the deviation of the concentricity between the second connecting shaft 350 and the motor shaft of the driving motor 330, thereby reducing the rotation error of the force measuring device 6 and the differential cylinder 5.

[0065] The first end of the first driving member 310 and the first end of the second driving member 320 are connected to the first connecting shaft 340, and the second connecting shaft 350 is connected to the motor shaft of the driving motor 330.

[0066] Of course, in order to further reduce the rotation error of the force measuring device 6 and the differential cylinder 5 and avoid excessive twisting of the force measuring device 6 and the differential cylinder 5 by the first driving member 310 and the second driving member 320, the driving mechanism 300 further comprises a torque sensor 360 arranged 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 back the torque value to the analysis processing system 500, so that the driving motor 330 stops driving or continues driving.

[0067] In some embodiments of the utility model, the first straight line direction can be a horizontal direction, and the acquisition mechanism 400 is also in the horizontal direction, so that the acquisition mechanism 400 is easy to install and place and the collected data is more accurate.

[0068] Further, the lens of the camera 410 is oriented in a vertical first straight line direction, that is, the lens of the camera 410 can be perpendicular to the distance direction between the anvil 2 and the micrometer screw 3 when the lens moves, which can further improve the accuracy of the collection mechanism 400.

[0069] In some embodiments of the present application, the analysis processing system 500 can analyze and process the displacement of the collection mechanism 400, and by inputting the displacement of the collection mechanism 400 into the analysis processing system 500, the analysis processing system 500 can analyze and calculate the error between the reading value L1, the distance value L and the displacement value L0, thereby completing the verification of the micrometer.

[0070] Specifically, in combination with Figure 1 , the analysis processing system 500 outputs a preset value L0 to the driving mechanism 300 and the collection mechanism 400; the driving mechanism 300 drives the differential cylinder 5 and the force measuring device 6, so that the scale of the fixed sleeve 4 and the scale of the differential cylinder 5 constitute the reading value L1. The collection mechanism 400 moves from the end of the anvil 2 to the end of the micrometer screw 3, and the analysis processing system 500 records the displacement of the collection mechanism 400 as L; the analysis processing system 500 can determine whether the micrometer is suitable by analyzing and calculating the error value of L and L0. In this way, the micrometer verification device has the function of verifying the error by displacement, and the accuracy of the verification device is improved.

[0071] In the present specification, unless explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0072] In the description of the present specification, the description of the terms "preferred embodiment", "further embodiment", "some embodiments", "other embodiments" or "specific examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present specification and the features of different embodiments or examples without contradiction.

[0073] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary, and are not to be interpreted as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present 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 micrometer device, comprising: a fixing mechanism adapted to fix the micrometer; a driving mechanism in driving connection with the differential cylinder and the force measuring device; a collecting mechanism adapted to collect a reading value formed by the scale of the fixed sleeve and the scale of the differential cylinder and a distance value between the anvil and the micrometer screw along the first linear direction; a measuring mechanism in connection with the differential cylinder and adapted to measure the displacement value of the differential cylinder along the first linear direction; an analysis processing system in electrical connection with the driving mechanism and adapted to control the driving mechanism; the analysis processing system is in electrical connection with the collecting mechanism and the measuring mechanism and adapted to analyze and process the error among the reading value, the distance value and the displacement value.

2. The micrometer testing device of claim 1, wherein the measuring mechanism comprises a standard linear scale, a connecting rod and a reading device; the length direction of the standard linear scale is along the first linear direction, the reading device is in sliding connection with the standard linear scale, and the reading device is connected with the driving mechanism through the connecting rod.

3. The micrometer testing device of claim 1, wherein the collecting mechanism comprises a camera, a slide rail and a sliding block in sliding connection with the slide rail, the camera is installed on the sliding block, and the length direction of the slide rail is along the first linear direction.

4. 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.

5. The micrometer testing device of claim 4, 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.

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

7. The micrometer testing device of claim 1, wherein the first linear direction is a horizontal direction.

8. The micrometer testing device of claim 3, wherein, the lens of the camera faces the direction perpendicular to the first linear direction.

9. The micrometer testing device of claim 1, wherein, the analysis processing system is adapted to analyze and process the displacement of the collecting mechanism.

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