An adjustable micrometer calibration bar

Abstract

This utility model belongs to the technical field of metrological calibration tools, specifically relating to an adjustable micrometer calibration rod. The invention includes: a first calibration rod body with a placement portion in its middle; and a second calibration rod body disposed within the placement portion and rotatably connected to the first calibration rod body. The second calibration rod body is adapted to rotate out of the placement portion of the first calibration rod body during use; and is also adapted to rotate back into the placement portion of the first calibration rod body when not in use. This adjustable micrometer calibration rod allows rotation relative to the first calibration rod body via the second calibration rod body, enabling flexible adjustment according to actual calibration needs to accommodate micrometers of different sizes. Unlike traditional fixed-size calibration rods, it eliminates the need to purchase multiple products of different sizes, improving ease of use and flexibility.

Description

Technical Field

[0001] This utility model belongs to the technical field of metrology and calibration tools, and specifically relates to an adjustable micrometer calibration bar. Background Technology

[0002] Micrometers, as precision measuring tools, are widely used in many industries such as machinery manufacturing, electronics processing, and automobile manufacturing to accurately measure the dimensions of workpieces. Regular calibration is crucial to ensure the accuracy of micrometer measurements.

[0003] Traditional micrometer calibration typically uses calibration bars of fixed dimensions. These calibration bars have pre-defined dimensions, and in practical use, if the dimension of the micrometer requiring calibration does not match the fixed dimension of the calibration bar, accurate calibration becomes impossible. For example, in a machining workshop, it may be necessary to measure parts of different sizes, but existing fixed-size calibration bars can only calibrate specific dimensions and are ineffective for calibrating micrometers of other sizes. This forces companies to purchase multiple calibration bars of different sizes to meet the calibration needs of various micrometers, increasing costs and making calibration work cumbersome.

[0004] Therefore, in order to solve the above problems, it is necessary to design an adjustable micrometer calibration bar. Utility Model Content

[0005] The purpose of this invention is to provide an adjustable micrometer calibration bar to solve the technical problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides an adjustable micrometer calibration bar, comprising:

[0007] The first calibration rod body has a placement part in its middle section;

[0008] The second calibration rod body is disposed within the placement section and is rotatably connected to the first calibration rod body; wherein

[0009] The second calibration rod body is adapted to be rotated out from the placement portion of the first calibration rod body during use; and

[0010] The second calibration rod body is adapted to be rotated into the placement section of the first calibration rod body when not in use.

[0011] Furthermore, the distance between the two inner walls of the placement part is greater than the rotation diameter of the second calibration rod body.

[0012] Furthermore, two limiting rubber sleeves are fitted onto the body of the first calibration rod; wherein

[0013] The two limiting sleeves are suitable for limiting the rotation of the second calibration rod body.

[0014] Furthermore, the placement part is provided with positioning holes;

[0015] The first calibration rod body has a threaded hole on its arc surface;

[0016] The threaded hole is connected to the placement part;

[0017] The second calibration rod body has a through hole; wherein

[0018] The positioning hole, through hole, and threaded hole are concentrically arranged;

[0019] Pins are provided in the positioning holes, through holes, and threaded holes; wherein

[0020] The body of the second calibration rod rotates around the pin.

[0021] Furthermore, a headless countersunk screw is provided inside the threaded hole; wherein

[0022] The capless countersunk screw is threaded into the threaded hole; and

[0023] The capless countersunk screw is suitable for limiting the position of the pin.

[0024] Furthermore, one end of the first calibration rod body is provided with a protrusion;

[0025] The other end of the first calibration rod body is provided with a recess; wherein

[0026] The recessed portion and the convex portion are adapted to each other; and

[0027] A protrusion of one of the first calibration rod bodies is adapted to be inserted into a recess of another first calibration rod body to increase the calibration size.

[0028] The beneficial effects of this utility model are:

[0029] (I) When a micrometer needs to be calibrated, this utility model allows for the selection of either a first calibration rod body or a second calibration rod body based on the required calibration size. When the second calibration rod body is needed, it is rotated out of the placement section of the first calibration rod body. The micrometer is then calibrated using the second calibration rod body. After calibration, if the second calibration rod body is no longer needed, it is rotated back into the placement section for storage. The second calibration rod body can rotate relative to the first calibration rod body, allowing for flexible adjustment according to actual calibration needs to accommodate micrometers of different sizes. Unlike traditional fixed-size calibration rods, it eliminates the need to purchase multiple products of different sizes, thus improving the convenience and flexibility of use.

[0030] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0031] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0032] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0033] Figure 1 The three-dimensional representation of the preferred embodiment of this utility model. Figure 1 ;

[0034] Figure 2 The three-dimensional representation of the preferred embodiment of this utility model. Figure 2 ;

[0035] Figure 3 This is an exploded view of a preferred embodiment of the present invention.

[0036] In the picture:

[0037] First calibration rod body 1, placement part 101, positioning hole 102, threaded hole 103, protrusion 104, and concave part 105;

[0038] Second calibration rod body 2, through hole 201;

[0039] 3. Limiting rubber sleeve; 4. Pin; 5. Headless countersunk screw. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. Example 1

[0041] like Figures 1 to 3As shown, this embodiment provides an adjustable micrometer calibration bar, including:

[0042] A first calibration rod body 1 has a placement portion 101 in its middle; a second calibration rod body 2 is disposed in the placement portion 101 and rotatably connected to the first calibration rod body 1; wherein the second calibration rod body 2 is adapted to rotate out of the placement portion 101 of the first calibration rod body 1 when in use; and the second calibration rod body 2 is adapted to rotate back into the placement portion 101 of the first calibration rod body 1 when not in use; wherein the rotatable connection between the second calibration rod 2 and the first calibration rod body 1 allows it to rotate out of the placement portion 101, thereby changing the calibration size of the calibration rod, and when not in use, it can rotate back into the placement portion 101, making it easy to store and carry, and saving space.

[0043] In this embodiment, when a micrometer needs to be calibrated, either the first calibration rod body 1 or the second calibration rod body 2 is selected according to the size to be calibrated. When the second calibration rod body 2 is needed, it is rotated out of the placement part 101 in the first calibration rod body 1, and the micrometer is calibrated using the second calibration rod body 2. After calibration, if the second calibration rod body 2 is no longer needed, it is rotated back into the placement part 101 for storage. Since the second calibration rod body 2 can rotate relative to the first calibration rod body 1, it can be flexibly adjusted according to actual calibration needs to adapt to the calibration of micrometers of different sizes and specifications. Unlike traditional fixed-size calibration rods, it is not necessary to purchase multiple products of different sizes, which improves the convenience and flexibility of use.

[0044] The distance between the two inner walls of the placement part 101 is greater than the rotation diameter of the second calibration rod body 2; wherein, by the distance between the two inner walls of the placement part 101 being greater than the rotation diameter of the second calibration rod body 2, interference between the rotation of the placement part 101 and the rotation of the second calibration rod body 2 is avoided.

[0045] Two limiting sleeves 3 are fitted on the first calibration rod body 1; wherein the two limiting sleeves 3 are adapted to limit the rotation of the second calibration rod body 2; wherein the limiting sleeves 3 can move on the first calibration rod body 1 to limit the second calibration rod body 2 when it is not in use, preventing the second calibration rod body 2 from rotating arbitrarily, and when the second calibration rod body 2 is in use, the limiting sleeves 3 are moved to the outside of the rotation diameter of the second calibration rod body 2 to cancel the limitation on the second calibration rod body 2.

[0046] The placement part 101 is provided with a positioning hole 102; the first calibration rod body 1 is provided with a threaded hole 103 on its arc surface; the threaded hole 103 communicates with the placement part 101; the second calibration rod body 2 is provided with a through hole 201; wherein the positioning hole 102, the through hole 201 and the threaded hole 103 are concentrically arranged; a pin 4 is provided in the positioning hole 102, the through hole 201 and the threaded hole 103; wherein the second calibration rod body 2 rotates around the pin 4.

[0047] The threaded hole 103 is provided with a capless countersunk screw 5; wherein the capless countersunk screw 5 is threadedly connected to the threaded hole 103; and the capless countersunk screw 5 is adapted to limit the pin 4; wherein when the capless countersunk screw 5 is rotated into place in the threaded hole 103, it abuts against the pin 4 to limit the pin 4 and prevent the pin 4 from falling off.

[0048] One end of the first calibration rod body 1 is provided with a protrusion 104; the other end of the first calibration rod body 1 is provided with a recess 105; wherein the recess 105 is adapted to the protrusion 104; and the protrusion 104 of one first calibration rod body 1 is adapted to be inserted into the recess 105 of another first calibration rod body 1 to increase the calibration size; wherein by connecting the protrusion 104 and the recess 105, multiple first calibration rod bodies 1 can be conveniently connected in series, significantly increasing the overall length of the calibration rod, thereby covering a wider range of calibration sizes, so that the adjustable micrometer calibration rod can be used for calibration of more micrometers of different specifications, improving the versatility and applicability of the equipment.

[0049] All the devices selected in this application (parts whose specific structures are not specified) are general standard parts or parts known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0050] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0051] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0052] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An adjustable micrometer calibration rod characterized by, include: The first calibration rod body (1) has a placement part (101) in its middle part. The second calibration rod body (2) is disposed within the placement part (101) and is rotatably connected to the first calibration rod body (1); wherein The second calibration rod body (2) is adapted to be rotated out from the placement part (101) of the first calibration rod body (1) during use; and The second calibration rod body (2) is adapted to be rotated into the placement part (101) of the first calibration rod body (1) when not in use.

2. The adjustable micrometer calibration bar as described in claim 1, characterized in that, The distance between the two inner walls of the placement part (101) is greater than the rotation diameter of the second calibration rod body (2).

3. The adjustable micrometer calibration bar as described in claim 2, characterized in that, Two limiting rubber sleeves (3) are fitted onto the body (1) of the first calibration rod; wherein The two limiting sleeves (3) are adapted to limit the rotation of the second calibration rod body (2).

4. The adjustable micrometer calibration bar as described in claim 3, characterized in that, The placement part (101) is provided with a positioning hole (102). The first calibration rod body (1) has a threaded hole (103) on its arc surface. The threaded hole (103) is connected to the placement part (101); The second calibration rod body (2) is provided with a through hole (201); wherein The positioning hole (102), through hole (201) and threaded hole (103) are concentrically arranged; Pins (4) are provided in the positioning hole (102), through hole (201), and threaded hole (103); wherein The second calibration rod body (2) rotates around the pin (4).

5. The adjustable micrometer calibration bar as described in claim 4, characterized in that, A headless countersunk screw (5) is provided in the threaded hole (103); wherein The headless countersunk screw (5) is threaded into the threaded hole (103); and The headless countersunk screw (5) is suitable for limiting the pin (4).

6. The adjustable micrometer calibration bar as described in claim 5, characterized in that, One end of the first calibration rod body (1) is provided with a protrusion (104). The other end of the first calibration rod body (1) is provided with a recess (105); wherein The recess (105) is adapted to the protrusion (104); and A protrusion (104) of one of the first calibration rod bodies (1) is adapted to be inserted into a recess (105) of another first calibration rod body (1) to increase the calibration size.

Images