Measuring rod measuring device

Abstract

A measuring rod measuring device comprises a ruler frame, one end of the ruler frame is provided with a micrometer head, the micrometer head comprises a micrometric screw, and the other end of the ruler frame is provided with a sleeve; the reading device comprises a sleeve, the sleeve is detachably and fixedly sleeved with the sleeve, a movable measuring rod is arranged in the sleeve in a sliding mode, a torsional spring meter is detachably installed at the end, away from the micrometer head, of the sleeve, and the torsional spring meter comprises a meter measuring rod; the meter measuring rod is arranged in the sleeve and can be in contact with one end of the movable measuring rod, and the other end of the movable measuring rod is used for being in contact with a measured object. The use is convenient, the use cost is low, and the calibration measuring rod can be calibrated.

Description

Technical Field

[0001] The present application belongs to the technical field of measuring instruments, and in particular relates to a measuring rod measuring device. Background Art

[0002] In the related technology, the calibration rods of commonly used micrometers with an outside diameter of more than 300mm generally adopt an adjustable structure. These adjustable calibration rods are easily affected by looseness or external force impact during use, resulting in changes in size, which in turn affects the measurement accuracy. At this time, the calibration rods need to be sent to the metrology and verification department for re-measurement using professional instruments. However, measurement by professional institutions usually takes a lot of time and requires a certain amount of money, which reduces work efficiency and increases the cost of use. Utility Model Content

[0003] In view of this, the present application provides a measuring rod measuring device which is easy to use and has low use cost, and adopts the following technical solutions:

[0004] A measuring rod measuring device, comprising:

[0005] A ruler frame, one end of which is provided with a micrometer head, the micrometer head includes a micrometer screw, and the other end of which is provided with a sleeve; and

[0006] A reading device, the reading device includes a sleeve, the sleeve is detachably mounted in the sleeve, a movable measuring rod is slidably arranged in the sleeve, a torsion spring meter is detachably mounted on the end of the sleeve away from the differential head, the torsion spring meter includes a measuring rod, the measuring rod is arranged in the sleeve and can contact with one end of the movable measuring rod, and the other end of the movable measuring rod is used to contact with the object to be measured.

[0007] Furthermore, a group of first locking rings and locking nuts are respectively arranged on the sleeve at both sides of the sleeve.

[0008] Furthermore, the locking nut is configured as a conical structure at one end facing the sleeve.

[0009] Furthermore, a second locking ring and a locking bolt are provided between the sleeve and the torsion spring.

[0010] Furthermore, a positioning groove is provided on the outer surface of the sleeve along its axial direction.

[0011] Furthermore, a first sleeve and a second sleeve are arranged in the sleeve, and the movable measuring rod is arranged in the first sleeve and the second sleeve;

[0012] The inner diameters of the first sleeve and the second sleeve are equal to the diameter of the movable measuring rod.

[0013] Furthermore, a stopper is provided on the movable measuring rod.

[0014] Furthermore, the ruler frame is a bow-shaped structure.

[0015] Beneficial effects of this application:

[0016] The present application can modify the existing outside micrometer by replacing the fixed measuring anvil on the existing outside micrometer with the reading device in the application. The reading device can measure the adjustable calibration rod through the cooperation of the movable measuring rod and the torsion spring table, so as to obtain the actual deviation value of the measured adjustable calibration rod. Compared with sending the adjustable calibration rod to a professional institution for measurement, the calibration time can be effectively shortened, the measurement efficiency can be improved, and the measurement cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present application;

[0018] Figure 2 This is a schematic diagram of the structure of the reading device in the implementation of this application;

[0019] Figure 3 for Figure 2 Middle AA section view;

[0020] Figure 4 A schematic diagram of the use status for the implementation of this application;

[0021] In the figure:

[0022] 100-foot frame, 110 sleeve;

[0023] 200 micrometer head, 210 micrometer screw;

[0024] 300 reading device, 310 torsion spring gauge, 311 gauge measuring rod, 312 second locking ring, 313 locking bolt, 320 sleeve, 321 first locking ring, 322 locking nut, 323 positioning groove, 330 movable measuring rod, 331 stopper, 340 first shaft sleeve, 350 second shaft sleeve;

[0025] 400 proofreading measuring rod. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0027] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0028] In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meanings of "multiple" and "several" are at least two, such as two, three, etc., unless otherwise clearly defined. In this application, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral whole; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0029] In daily work, it is common to use an outside micrometer to measure workpieces or products. However, after long-term use, the outside micrometer will have large measurement errors. At this time, a calibration rod is required to calibrate the outside micrometer.

[0030] The commonly used calibration rods of micrometers with an outside diameter of more than 300mm generally adopt an adjustable structure. These adjustable calibration rods are easily affected by looseness or external impact during use, resulting in changes in size, which in turn affects the measurement accuracy. At this time, the calibration rod needs to be measured to find its deviation. Generally, the calibration rod will be sent to the metrology and verification department for re-measurement using professional instruments, but measurement by professional institutions usually takes a lot of time and requires a certain amount of money, which reduces work efficiency and increases the cost of use.

[0031] The applicant of the present application has found in actual work that by modifying the existing outside diameter micrometer, a measuring tool with a simple structure, low manufacturing cost and easy use can be obtained.

[0032] Reference Figure 1-4 The present application provides a measuring rod measuring device, comprising:

[0033] A ruler frame 100, one end of which is mounted with a differential head 200, the differential head 200 including a micrometer screw 210, and the other end of the ruler frame 100 is provided with a sleeve 110; and

[0034] The reading device 300 includes a sleeve 320, which is detachably mounted in the sleeve 110. A movable measuring rod 330 is slidably arranged in the sleeve 320. A torsion spring meter 310 is detachably mounted on one end of the sleeve 320 away from the differential head 200. The torsion spring meter 310 includes a measuring rod 311, which is arranged in the sleeve 320 and can contact one end of the movable measuring rod 330. The other end of the movable measuring rod 330 is used to contact the object to be measured.

[0035] Specifically, in the present application, the reading device 300 can be used to replace the fixed anvil on the existing outside diameter micrometer. When in use, a gauge block with the same size as the gauge rod to be measured and used for calibration is placed between the movable measuring rod 330 and the micrometer screw 210 of the differential head 200. One end of the gauge block is in conflict with the micrometer screw 210, and the other end is in conflict with the movable measuring rod 330. At this time, the movable measuring rod 330 is in conflict with the measuring rod of the torsion spring meter 310. The gauge block is slowly moved up, down, left and right to approach the other end of the movable measuring rod 330 to find the inflection point (i.e., the lowest point). The pointer of the torsion spring meter 310 is reset to zero by rotating the micrometer screw 210 of the differential head 200, and the micrometer screw 210 of the differential head 200 is locked. Next, remove the gauge block and place the calibration rod 400 to be measured, so that one end of the calibration rod 400 is in contact with the micrometer screw 210, and the other end is in contact with the movable measuring rod 330 for measurement. The corresponding inflection point is found by moving the calibration rod 400 to be measured close to the other end of the movable measuring rod 330. It can be understood that for the arc-shaped measuring surface, the inflection point represents the maximum size; for the plane measuring surface, the inflection point represents the minimum size. By reading the corresponding value on the torsion spring table 310, the actual deviation value of the calibration rod 400 to be measured can be obtained. It can be understood that when using the gauge block to calibrate the zero point of the torsion spring table 310 and calibrate the calibration rod 400, the gauge block and the calibration rod 400 must be guaranteed to always be in contact with the micrometer screw 210 and the movable measuring rod 330.

[0036] Reference Figure 1-3 It can be understood that a set of first locking rings 321 and locking nuts 322 are respectively disposed on both sides of the sleeve 110 on the sleeve 320 .

[0037] Specifically, the first locking ring 321 is provided with an external thread matched with the locking nut 322 and a plurality of slots along its axial direction. The locking ring is sleeved on the sleeve 320, and the locking nut 322 is sleeved on the locking ring. A set of the first locking members are respectively provided on both sides of the sleeve 110 of the ruler frame 100. When the two first locking rings 321 are respectively screwed, the two first locking rings 321 can be tightened to lock the sleeve 320 on the sleeve 110.

[0038] Reference Figure 1-3 It can be understood that the locking nut 322 is configured as a conical structure at one end facing the sleeve 110 .

[0039] Specifically, the locking nut 322 is configured as a conical structure at one end facing the sleeve 110 , which can ensure the axial consistency between the reading device 300 and the differential head 200 to a certain extent, thereby ensuring the accuracy of the measurement.

[0040] Reference Figure 1-2 It can be understood that a second locking ring 312 and a locking bolt 313 are provided between the sleeve 320 and the torsion spring table 310 .

[0041] Specifically, the second locking ring 312 is sleeved between the sleeve 320 and the torsion spring gauge 310 , and the locking bolt 313 is used to tighten the second locking ring 312 to connect the sleeve 320 and the torsion spring gauge 310 , while also facilitating the disassembly of the torsion spring gauge 310 .

[0042] Reference Figure 1-2 It can be understood that the outer surface of the sleeve 320 is provided with a positioning groove 323 along its axial direction.

[0043] Specifically, the reading device 300 described in the present application can replace the fixed anvil on the existing outside diameter micrometer. In the scale frame 100 sleeve 110 of the existing outside diameter micrometer, a positioning pin is usually provided. The positioning groove 323 provided on the sleeve 320 described in the present application can be applicable to the scale frame 100 of the existing micrometer. The cooperation between the positioning pin and the positioning groove 323 can prevent the sleeve 320 from rotating.

[0044] Reference Figure 3 It can be understood that a first sleeve 340 and a second sleeve 350 are disposed in the sleeve 320 , and the movable measuring rod 330 is disposed in the first sleeve 340 and the second sleeve 350 .

[0045] Specifically, the first sleeve 340 is provided with an external thread, and the end of the sleeve 320 away from the torsion spring gauge 310 is provided with an internal thread adapted to the external thread, and the first sleeve 340 is threadedly mounted on the sleeve 320. The second sleeve 350 is installed inside the sleeve 320. The first sleeve 340 and the second sleeve 350 are both provided with a through hole through which the movable measuring rod 330 can pass, so as to avoid radial shaking between the movable measuring rod 330 and the gauge measuring rod 311, thereby improving the stability of measurement.

[0046] The inner diameters of the first sleeve 340 and the second sleeve 350 are equal to the diameter of the movable measuring rod 330, thereby further ensuring that radial shaking between the movable measuring rod 330 and the surface measuring rod 311 is avoided, thereby improving the stability of measurement.

[0047] Reference Figure 3 It can be understood that a stopper 331 is provided on the movable measuring rod 330 .

[0048] Specifically, the stopper 331 provided on the movable measuring rod 330 can prevent the movable measuring rod 330 from being separated from the sleeve 320 .

[0049] Reference Figure 1 and 4 It can be understood that the ruler frame 100 is a bow-shaped structure.

[0050] Specifically, the ruler frame 100 may be a bow-shaped structure ruler frame 100 of an existing outside diameter micrometer, or a ruler frame 100 of different shapes in other technologies, as long as the two ends of the ruler frame 100 can maintain axial consistency.

[0051] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the principles of the present application shall be included in the protection scope of the present application.

Claims

1. A measuring rod measuring device, It is characterized in that include: A ruler frame, one end of which is provided with a micrometer head, the micrometer head includes a micrometer screw, and the other end of which is provided with a sleeve; as well as A reading device, the reading device includes a sleeve, the sleeve is detachably mounted in the sleeve, a movable measuring rod is slidably arranged in the sleeve, a torsion spring meter is detachably mounted on the end of the sleeve away from the differential head, the torsion spring meter includes a measuring rod, the measuring rod is arranged in the sleeve and can contact with one end of the movable measuring rod, and the other end of the movable measuring rod is used to contact with the object to be measured.

2. A measuring rod measuring device according to claim 1, It is characterized in that A set of first locking rings and locking nuts are respectively arranged on the sleeve at both sides of the sleeve.

3. A measuring rod measuring device according to claim 2, It is characterized in that The locking nut is configured as a conical structure at one end facing the sleeve.

4. A measuring rod measuring device according to claim 1, It is characterized in that A second locking ring and a locking bolt are arranged between the sleeve and the torsion spring.

5. A measuring rod measuring device according to claim 1, It is characterized in that The outer surface of the sleeve is provided with a positioning groove along its axial direction.

6. A measuring rod measuring device according to claim 1, It is characterized in that A first sleeve and a second sleeve are arranged in the sleeve, and the movable measuring rod is arranged in the first sleeve and the second sleeve; The inner diameters of the first sleeve and the second sleeve are equal to the diameter of the movable measuring rod.

7. A measuring rod measuring device according to claim 6, It is characterized in that A stopper is arranged on the movable measuring rod.

8. A measuring rod measuring device according to any one of claims 1 to 7, It is characterized in that The ruler frame is a bow-shaped structure.

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