A digital display small aperture spring type inner diameter gauge calibration clamp

Abstract

The utility model discloses a kind of digital display small aperture spring type inside diameter gauge calibration clamps, including base, ejector rod, ejector rod mounting, inside diameter gauge fixed plate and fixed plate mounting, positioning part for being positioned on the calibrator is equipped on base, ejector rod mounting and fixed plate mounting are located on base, ejector rod is horizontally equipped on ejector rod mounting and is fixed by first fixed part, inside diameter gauge fixed plate is equipped on fixed plate mounting, inside diameter gauge fixed plate is equipped with inside diameter gauge positioning through-hole and the second fixed part for fixing inside diameter gauge, inside diameter gauge positioning through-hole and the axis of ejector rod vertical intersection. With base as carrier, ejector rod and inside diameter gauge fixed plate are integrated, inside diameter gauge probe is positioned by inside diameter gauge fixed plate and second fixed part, can improve positioning stability, reduce positioning deviation error, meet the calibration accuracy requirement of small aperture inside diameter gauge;Need not to replace the positioning block of different aperture, just need to adjust second fixed part can be adapted to multiple inside diameter gauges, calibration efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of calibration fixtures for measuring instruments, and in particular to a fixture for calibrating a digital display small-diameter spring-loaded inner diameter gauge, which is suitable for calibration scenarios of spring-loaded inner diameter gauges with a digital display small diameter range (0.95~6.35mm). Background Technology

[0002] Typically, digital small-diameter spring-loaded internal diameter gauges are core metrological tools in machining for measuring minute orifices (such as precision housing bores and miniature valve core holes), and their calibration accuracy directly affects the product's machining quality. Current calibration methods mainly rely on general-purpose fixtures with standard gauge rings, but these methods have the following drawbacks in practical operation: (1) Poor adaptability: The tensioning structure of the general-purpose fixture is large in size and cannot fit the spring probe of the small-diameter inner diameter gauge, which can easily lead to uneven force on the spring probe and affect the accuracy of calibration data.

[0003] (2) Unstable positioning: The inner diameter gauge rod is slender and the general fixture lacks a targeted positioning structure. During the calibration process, the gauge rod is prone to displacement, resulting in measurement error.

[0004] (3) Low efficiency: When calibrating small-diameter inner diameter gauges of different specifications, multiple accessories need to be replaced and the fixtures need to be adjusted. The operation is complicated, the data is difficult to read, and it is difficult to meet the calibration requirements. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a digital display small-diameter spring-loaded inner diameter gauge calibration fixture that is simple in structure, widely adaptable, accurately positioned, easy to use, and conducive to improving efficiency.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A digital display small-diameter spring-loaded inner diameter gauge calibration fixture includes a base, a push rod, a push rod mounting component, an inner diameter gauge fixing plate, and a fixing plate mounting component. The push rod mounting component and the fixing plate mounting component are mounted on the base. The base has a positioning part for positioning on a calibration instrument. The push rod is horizontally mounted on the push rod mounting component and fixed by a first fixing component. The inner diameter gauge fixing plate is mounted on the fixing plate mounting component. The inner diameter gauge fixing plate has an inner diameter gauge positioning through hole and a second fixing component for fixing the inner diameter gauge. The inner diameter gauge positioning through hole intersects perpendicularly with the axis of the push rod.

[0007] As a further improvement to the above technical solution: the fixing plate mounting component is slidably disposed on the base, and the sliding direction is parallel to the axis of the top rod.

[0008] As a further improvement to the above technical solution: the base is provided with a guide rail, the guide rail is arranged parallel to the top rod, the fixing plate mounting component is provided with a slide block, and the slide block is located on the guide rail.

[0009] As a further improvement to the above technical solution: the inner diameter gauge fixing plate is movably mounted on the fixing plate mounting component.

[0010] As a further improvement to the above technical solution: the inner diameter gauge fixing plate and / or the fixing plate mounting member are provided with waist-shaped holes arranged in the vertical direction, and the inner diameter gauge fixing plate and the fixing plate mounting member are fixedly connected by fasteners provided in the waist-shaped holes.

[0011] As a further improvement to the above technical solution: the fixing plate mounting component is provided with a lifting slide groove, and the inner diameter gauge fixing plate is embedded in the lifting slide groove.

[0012] As a further improvement to the above technical solution: both the inner diameter gauge fixing plate and the fixing plate mounting component are L-shaped structures. The horizontal part of the fixing plate mounting component is located on the base, and the vertical part of the inner diameter gauge fixing plate is vertically and flexibly located on the vertical part of the fixing plate mounting component. The positioning through hole of the inner diameter gauge is located on the horizontal part of the inner diameter gauge fixing plate.

[0013] As a further improvement to the above technical solution: both the first fixing member and the second fixing member are set screws.

[0014] As a further improvement to the above technical solution: the first fixing member is provided with multiple members and arranged circumferentially along the top rod.

[0015] As a further improvement to the above technical solution: the positioning part is a positioning block provided on the bottom surface of the base, and the side of the base 1 is provided with a locking handle.

[0016] Compared with the prior art, the advantages of this utility model are: This utility model discloses a digital display small-aperture spring-loaded inner diameter gauge calibration fixture. Using a base as a carrier, it integrates a top rod and an inner diameter gauge fixing plate, forming an integrated "positioning-locking-calibration" structure, suitable for inner diameter gauges with apertures ranging from 0.95 to 6.35 mm. The inner diameter gauge fixing plate and a second fixing component position the inner diameter gauge probe, improving positioning stability. The positioning through-hole of the inner diameter gauge intersects perpendicularly with the axial direction of the top rod, significantly reducing positioning offset errors. The indicated value variation is controlled within ≤1 μm, meeting the calibration accuracy requirements of digital display small-aperture inner diameter gauges. Furthermore, the inner diameter gauge fixing plate and the second fixing component eliminate the need to replace positioning blocks with different apertures; only the second fixing component needs adjustment to accommodate various small-aperture digital display inner diameter gauges. The calibration time for a single test is reduced to within 5 minutes, significantly improving calibration efficiency.

[0017] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the fixture for calibrating a digital display small-diameter spring-loaded inner diameter gauge according to this utility model. Figure 2 This is a schematic diagram of the main structure of the digital display small-diameter spring-loaded inner diameter gauge calibration fixture of this utility model.

[0019] Figure 3 This is a structural schematic diagram of the utility model in use.

[0020] The labels in the diagram represent: 1. Base; 11. Guide rail; 12. Positioning part; 13. Locking handle; 2. Top rod; 3. Top rod mounting part; 31. First fixing part; 4. Inner diameter gauge fixing plate; 41. Inner diameter gauge positioning through hole; 42. Second fixing part; 5. Fixing plate mounting part; 51. Slide; 52. Waist-shaped hole; 53. Fastener; 54. Lifting slide; 6. Calibration instrument. Detailed Implementation

[0021] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Figures 1 to 3 This invention illustrates an embodiment of a digital display small-diameter spring-loaded inner diameter gauge calibration fixture. The fixture includes a base 1, a push rod 2, a push rod mounting component 3, an inner diameter gauge fixing plate 4, and a fixing plate mounting component 5. The base 1 has a positioning part 12 for positioning on a calibration instrument 6. The push rod mounting component 3 and the fixing plate mounting component 5 are mounted on the base 1. The push rod 2 is horizontally mounted on the push rod mounting component 3 and fixed by a first fixing component 31. The inner diameter gauge fixing plate 4 is mounted on the fixing plate mounting component 5. The inner diameter gauge fixing plate 4 has an inner diameter gauge positioning through hole 41 and a second fixing component 42 for fixing the inner diameter gauge. The inner diameter gauge positioning through hole 41 intersects perpendicularly with the axis of the push rod 2. Preferably, the inner diameter gauge fixing plate 4 is arranged horizontally with a thickness of 4~6mm, which is compatible with mainstream digital display small-diameter spring-loaded inner diameter gauge models with a diameter of 0.95~6.35mm; the height of the inner diameter gauge fixing plate 4 is greater than the height of the top rod 2, and the inner diameter gauge is inserted into the inner diameter gauge positioning through hole 41 from top to bottom during calibration, so that the inner diameter gauge fixing plate 4 can provide support for the inner diameter gauge.

[0026] This embodiment of the digital display small-aperture spring-loaded inner diameter gauge calibration fixture uses a base 1 as a carrier, integrating a top rod 2 and an inner diameter gauge fixing plate 4 to form an integrated "positioning-locking-calibration" structure, which can accommodate inner diameter gauges with apertures ranging from 0.95 to 6.35 mm. The inner diameter gauge fixing plate 4 and the second fixing member 42 position the inner diameter gauge probe, improving positioning stability. The positioning through hole 41 of the inner diameter gauge intersects perpendicularly with the axis of the top rod 2, significantly reducing positioning offset errors. The indicated value variation is controlled within ≤1 μm, meeting the calibration accuracy requirements of digital display small-aperture inner diameter gauges. Furthermore, using the inner diameter gauge fixing plate 4 and the second fixing member 42, there is no need to replace positioning blocks with different apertures; only the second fixing member 42 needs to be adjusted to accommodate various small-aperture digital display inner diameter gauges. The calibration time for a single test is reduced to within 5 minutes, significantly improving calibration efficiency.

[0027] Furthermore, in this embodiment, the fixing plate mounting component 5 is slidably disposed on the base 1, and the sliding direction is parallel to the axis of the top rod 2. When the fixing plate mounting component 5 slides relative to the base 1, it can drive the inner diameter gauge fixing plate 4 to move, thereby adjusting the axial distance between the top rod 2 and the inner diameter gauge positioning hole 41, making it more convenient and flexible to use.

[0028] In a preferred embodiment, the base 1 is provided with a guide rail 11, which is arranged parallel to the top rod 2. The fixing plate mounting part 5 (specifically the horizontal part of the fixing plate mounting part 5) is provided with a slide 51, which is located on the guide rail 11. Through the cooperation of the guide rail 11 and the slide 51, the sliding of the fixing plate mounting part 5 and the inner diameter gauge fixing plate 4 is guided, realizing axial movement along the top rod 2 and avoiding deviation. The structure is simple and effective.

[0029] Furthermore, in this embodiment, the inner diameter gauge fixing plate 4 is vertically and flexibly mounted on the fixing plate mounting member 5. When the inner diameter gauge fixing plate 4 is raised and lowered on the fixing plate mounting member 5, the height difference between the top rod 2 and the inner diameter gauge fixing plate 4 can be adjusted, making it more convenient and flexible to use.

[0030] Preferably, the inner diameter gauge fixing plate 4 and / or the fixing plate mounting member 5 may be provided with oblong holes 52 arranged in the vertical direction. The inner diameter gauge fixing plate 4 and the fixing plate mounting member 5 are fixedly connected by fasteners 53 (such as bolts, screws, etc.) provided in the oblong holes 52. After loosening the fasteners 53, the installation height of the inner diameter fixing plate 4 on the fixing plate mounting member 5 can be easily adjusted. After adjustment, the fasteners 53 can be tightened. The structure is simple and the adjustment is convenient.

[0031] Furthermore, in this embodiment, the fixing plate mounting component 5 is provided with a lifting slide groove 54, and the inner diameter fixing plate 4 is embedded in the lifting slide groove 54. The lifting slide groove 54 can provide a limiting and guiding function for the inner diameter fixing plate 4, preventing the inner diameter fixing plate 4 from shifting when moving up and down. The structure is simple and effective.

[0032] Preferably, in this embodiment, both the inner diameter gauge fixing plate 4 and the fixing plate mounting member 5 are L-shaped structures. The horizontal part of the fixing plate mounting member 5 is located on the base 1, and the vertical part of the inner diameter gauge fixing plate 4 is vertically and flexibly located on the vertical part of the fixing plate mounting member 5. The inner diameter gauge positioning through hole 41 is located on the horizontal part of the inner diameter gauge fixing plate 4. See details. Figure 3 The L-shaped inner diameter gauge fixing plate 4 and fixing plate mounting piece 5 can cooperate to form a U-shaped structure. The probe of the inner diameter gauge can pass through the inner diameter gauge positioning through hole 41 from top to bottom. The top rod 2 and the calibrator 6 can pass through the U-shaped structure from the left and right sides and contact the probe of the inner diameter gauge.

[0033] In a preferred embodiment, both the first fixing member 31 and the second fixing member 42 are set screws, which can reliably fix the top rod 2 to the top rod mounting member 3 and the inner diameter gauge to the inner diameter gauge fixing plate 4, and are easy to adjust.

[0034] In a preferred embodiment, multiple first fixing members 31 are provided and arranged circumferentially along the top rod 2, which facilitates the stable fixing of the top rod 2 to the top rod mounting member 3. Of course, in other embodiments, only a single first fixing member 31 may be provided.

[0035] See details Figure 3 In this embodiment, the bottom surface of the base 1 is provided with a positioning block as a positioning part, and the side of the base 1 is provided with a locking handle 13. The base 1 can be positioned in the guide groove of the calibrator 6 by the positioning block and locked by the locking handle 13, so that the axis of the top rod 2 is collinear with the axis of the measuring rod of the calibrator 6, which is beneficial to achieving accurate calibration. Preferably, the base 1 is a rectangular metal block, and the positioning block is a dovetail positioning block or a trapezoidal positioning block, which is adapted to the guide groove on the calibrator 6, which helps to prevent the base 1 from moving up and down relative to the calibrator 6. The locking handle 13 is threadedly connected to the base 1, which has good reliability and is convenient to use.

[0036] The method of using the digital display small-diameter spring-loaded inner diameter gauge calibration fixture of this utility model is as follows: a) Fixture assembly: Install the digital small-diameter spring-loaded inner diameter gauge on the inner diameter gauge fixing plate 4. The probe passes through the positioning through hole 41 of the inner diameter gauge and is fixed by the second fixing member 45. Move the push rod 2 so that the end face of the push rod 2 contacts the probe of the digital small-diameter spring-loaded inner diameter gauge. Then, use the first fixing member 31 to lock the push rod 3 to keep the push rod 2 fixed. Loosen the second fixing member 45 and remove the digital small-diameter spring-loaded inner diameter gauge.

[0037] b) Install the entire fixture onto the calibrator 6 using the positioning block and lock it using the locking handle 13. Move the calibrator 6 until the measuring rod contacts the end face of the top rod 2, then clear the value displayed on the calibrator 6.

[0038] c) Place the digital display small-diameter spring-loaded inner diameter gauge into the corresponding standard ring gauge and set the digital display device of the digital display small-diameter spring-loaded inner diameter gauge to the standard ring gauge value.

[0039] d) After retracting the probe of the calibrator 6 by a certain safe distance, reinstall the digital small-aperture spring-loaded inner diameter gauge onto the inner diameter gauge fixing plate 4. Move the probe of the calibrator to contact the probe of the digital small-aperture spring-loaded inner diameter gauge and compress the upper limit value of the probe. Then start the measurement, measuring point by point in 0.05mm increments. Record the values ​​displayed on the digital small-aperture spring-loaded inner diameter gauge and the calibrator 6 display until the lower limit value of the probe is reached. Finally, calculate the indicated error and adjacent error for each point.

[0040] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. A fixture for calibrating a digital display small-diameter spring-loaded inner diameter gauge, characterized in that: The instrument includes a base (1), a top rod (2), a top rod mounting component (3), an inner diameter gauge fixing plate (4), and a fixing plate mounting component (5). The base (1) is provided with a positioning part (12) for positioning on the calibrator (6). The top rod mounting component (3) and the fixing plate mounting component (5) are provided on the base (1). The top rod (2) is horizontally provided on the top rod mounting component (3) and fixed by a first fixing component (31). The inner diameter gauge fixing plate (4) is provided on the fixing plate mounting component (5). The inner diameter gauge fixing plate (4) is provided with an inner diameter gauge positioning through hole (41) and a second fixing component (42) for fixing the inner diameter gauge. The inner diameter gauge positioning through hole (41) intersects perpendicularly with the axis of the top rod (2).

2. The fixture for calibrating a digital display small-diameter spring-loaded inner diameter gauge according to claim 1, characterized in that: The fixing plate mounting component (5) is slidably disposed on the base (1), and the sliding direction is parallel to the axis of the top rod (2).

3. The digital display small-diameter spring-loaded inner diameter gauge calibration fixture according to claim 2, characterized in that: The base (1) is provided with a guide rail (11), the guide rail (11) is arranged parallel to the top rod (2), and the fixed plate mounting part (5) is provided with a slide (51), the slide (51) is located on the guide rail (11).

4. The fixture for calibrating a digital display small-diameter spring-loaded inner diameter gauge according to claim 1, characterized in that: The inner diameter gauge fixing plate (4) is vertically mounted on the fixing plate mounting component (5).

5. The fixture for calibrating a digital display small-diameter spring-loaded inner diameter gauge according to claim 4, characterized in that: The inner diameter gauge fixing plate (4) and / or the fixing plate mounting member (5) are provided with waist-shaped holes (52) arranged in the vertical direction. The inner diameter gauge fixing plate (4) and the fixing plate mounting member (5) are fixedly connected by fasteners (53) provided in the waist-shaped holes (52).

6. The fixture for calibrating a digital display small-diameter spring-loaded inner diameter gauge according to claim 5, characterized in that: The fixing plate mounting component (5) is provided with a lifting slide groove (54), and the inner diameter gauge fixing plate (4) is embedded in the lifting slide groove (54).

7. The digital display small-diameter spring-loaded inner diameter gauge calibration fixture according to claim 4, characterized in that: Both the inner diameter gauge fixing plate (4) and the fixing plate mounting component (5) are L-shaped structures. The horizontal part of the fixing plate mounting component (5) is located on the base (1), and the vertical part of the inner diameter gauge fixing plate (4) is vertically and vertically located on the vertical part of the fixing plate mounting component (5). The inner diameter gauge positioning through hole (41) is located on the horizontal part of the inner diameter gauge fixing plate (4).

8. The fixture for calibrating a digital small-diameter spring-loaded inner diameter gauge according to any one of claims 1 to 7, characterized in that: Both the first fixing member (31) and the second fixing member (42) are set screws.

9. The fixture for calibrating a digital display small-diameter spring-loaded inner diameter gauge according to claim 8, characterized in that: The first fixing member (31) is provided with multiple members arranged circumferentially along the top rod (2).

10. The fixture for calibrating a digital small-diameter spring-loaded inner diameter gauge according to any one of claims 1 to 7, characterized in that: The positioning part (12) is a positioning block provided on the bottom surface of the base (1), and the side of the base (1) is provided with a locking handle (13).

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