Auxiliary tool for calibrating micrometer

Abstract

The utility model belongs to the technical field of micrometer verification, and particularly relates to an auxiliary tool for micrometer verification, which comprises a bottom plate, the top surface of the bottom plate is fixedly connected with a slide rail, the side wall of the slide rail is slidably connected with two slide blocks, the side walls of the slide blocks are both in threaded connection with locking pins, the top surfaces of the slide blocks are both fixedly connected with mounting plates, and the mounting plates are fixedly connected with the slide rails. A supporting rod is fixedly connected to the top face of the mounting plate, and an adjusting frame is arranged on the top face of the supporting rod. The adjusting frame comprises a fixing plate fixedly connected to the position, close to the top end, of the side wall of the supporting rod, a pin shaft is fixedly connected to the side wall of the fixing plate, a connecting plate is rotationally connected to the side wall of the pin shaft, the connecting plate is in an L shape, and a clamping piece is arranged on the side wall of the connecting plate. According to the utility model, during the verification process of the micrometer with the measurement upper limit larger than 150mm, the micrometer of the micrometer holder of different manufacturers can be clamped and fixed, and the indication error verification work of the micrometer can be carried out on the micrometer head by means of a special gauge.

Description

Technical Field

[0001] This utility model belongs to the field of micrometer calibration technology, specifically relating to clamping auxiliary tools for micrometer calibration. Background Technology

[0002] Micrometers come in a variety of sizes, such as (0-25)mm, (25-50)mm, (50-75)mm, (75-100)mm, (100-125)mm, (150-175)mm, (200-225)mm, (300-400)mm, (400-500)mm, etc. Moreover, each micrometer manufacturer designs its own micrometer frame.

[0003] According to the requirements of JJG 21-2008 Micrometer Verification Procedure, for micrometers with a measurement upper limit greater than 150 mm, the indication error of the micrometer head can be tested at the micrometer inspection point (0-25) mm using a special fixture. When testing the indication error of the micrometer head using a special fixture, it is particularly important to properly clamp and fix the micrometer to install the special fixture and to test the indication error.

[0004] Currently, the clamping aids available for micrometer calibration can only clamp micrometers with a small measuring range of less than 150mm. There are no suitable clamping aids for calibrating micrometers with a measuring range greater than 150mm, causing considerable inconvenience to the calibration work. Utility Model Content

[0005] The purpose of this utility model is to provide a clamping auxiliary tool for micrometer calibration, which can solve the problem of clamping and fixing micrometers with different manufacturers' frames during the calibration process for micrometers with a measurement upper limit greater than 150mm, and carry out the calibration work on the micrometer micrometer head indication error with the help of special inspection tools.

[0006] The specific technical solution adopted by this utility model is as follows:

[0007] A micrometer calibration auxiliary tool includes a base plate, a slide rail fixedly connected to the top surface of the base plate, two sliders slidably connected to the side wall of the slide rail, a locking pin threaded to the side wall of each slider, a mounting plate fixedly connected to the top surface of each slider, a support rod fixedly connected to the top surface of the mounting plate, and an adjustment bracket provided on the top surface of the support rod.

[0008] Furthermore, the adjustment frame includes a fixing plate fixedly connected to the side wall of the support rod near the top end. A pin is fixedly connected to the side wall of the fixing plate, and a connecting plate is rotatably connected to the side wall of the pin. The connecting plate is L-shaped, and a clamping member is provided on the side wall of the connecting plate.

[0009] Furthermore, the side wall of the connecting plate is provided with an arc-shaped groove, and an adjusting bolt is provided in the arc-shaped groove. The adjusting bolt is threadedly connected to the fixing plate.

[0010] Furthermore, the clamping member includes a clamping block fixedly connected to the side wall of the connecting plate. The clamping block is U-shaped, and a locking bolt is threadedly connected to the side wall of the clamping block.

[0011] Furthermore, a rubber pad is rotatably connected to one end face of the locking bolt on the inner side of the clamping block.

[0012] Furthermore, a positioning plate is fixedly connected to the top surface of the base plate, and a limit block is slidably connected to the side wall of the positioning plate.

[0013] Furthermore, the arc-shaped groove is concentric with the pin.

[0014] The technical effects achieved by this utility model are as follows:

[0015] This utility model's auxiliary tool for micrometer calibration, through the cooperation of a base plate, slide rail, slider, adjustment frame, and clamping components, can solve the problem of clamping and fixing micrometers with different manufacturers' frames during the calibration process for micrometers with a measurement upper limit greater than 150mm, and carry out the calibration of the micrometer's micrometer head indication error with the help of a special inspection tool. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the adjustment frame of this utility model;

[0019] Figure 4 This is a structural schematic diagram of the adjustment frame of this utility model from another perspective;

[0020] Figure 5 This is a schematic diagram of the connecting plate of this utility model.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1. Base plate; 2. Slide rail; 3. Slider; 4. Mounting plate; 5. Support rod; 6. Fixing plate; 7. Pin; 8. Arc groove; 9. Adjusting bolt; 10. Connecting plate; 11. Clamping block; 12. Locking bolt; 13. Rubber pad; 14. Positioning plate; 15. Limiting block; 16. Micrometer body; 17. Locking pin. Detailed Implementation

[0023] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0024] like Figures 1-5 As shown, the auxiliary tool for micrometer calibration includes a base plate 1. A slide rail 2 is fixedly connected to the top surface of the base plate 1. Two sliders 3 are slidably connected to the side wall of the slide rail 2. Locking pins 17 are threadedly connected to the side wall of each slider 3. The locking pins 17 can be used to fix the sliders 3 to a suitable position. A mounting plate 4 is fixedly connected to the top surface of each slider 3. A support rod 5 is fixedly connected to the top surface of the mounting plate 4. An adjustment frame is set on the top surface of the support rod 5. The micrometer body 16 is set between the two adjustment frames.

[0025] like Figure 3 and Figure 4 As shown, the adjustment frame includes a fixing plate 6 fixedly connected to the side wall of the support rod 5 near the top. A pin 7 is fixedly connected to the side wall of the fixing plate 6. A connecting plate 10 is rotatably connected to the side wall of the pin 7. The connecting plate 10 is L-shaped and has clamping parts on its side wall.

[0026] like Figure 5 As shown, the connecting plate 10 has an arc-shaped groove 8 on its side wall, and an adjusting bolt 9 is installed in the arc-shaped groove 8. The adjusting bolt 9 is threadedly connected to the fixing plate 6. The arc-shaped groove 8 is concentric with the pin 7.

[0027] The adjusting frame is used to adjust the angle of the connecting plate 10 on the fixed plate 6 and to adjust the connecting plates 10 on both sides synchronously.

[0028] Furthermore, in order to increase the accuracy of the angle of the connecting plates 10 on both sides, scale lines can be set on the connecting plates 10 and the fixing plate 6 to facilitate accurate judgment of the rotation angle; in addition, by using the arc groove 8 for limiting, it can be ensured that the connecting plates 10 move along the set trajectory and ensure that they can make full contact with the micrometer body 16.

[0029] like Figure 5 As shown, the clamping component includes a clamping block 11 fixedly connected to the side wall of the connecting plate 10. The clamping block 11 is U-shaped, and a locking bolt 12 is threadedly connected to the side wall of the clamping block 11. A rubber pad 13 is rotatably connected to one end face of the locking bolt 12 on the inner side of the clamping block 11.

[0030] The clamping component is fixed by a locking bolt 12, which can drive the rubber pad 13 to contact the micrometer body 16. The locking bolt 12 can apply pressure to ensure stability, while the rubber pad 13 can protect the surface of the micrometer body 16 and increase the friction with the surface of the micrometer body 16 to improve stability.

[0031] like Figure 2 As shown, a positioning plate 14 is fixedly connected to the top surface of the base plate 1, and a limit block 15 is slidably connected to the side wall of the positioning plate 14. On the one hand, it is used to support the bottom position of the micrometer body 16, and on the other hand, it can play a role in auxiliary fixation to prevent the lower part of the micrometer body 16 from shifting.

[0032] The working principle of this utility model is as follows: When clamping the micrometer body 16, first move the slider 3 to a suitable position according to the specifications of the micrometer body 16, so that the sliders 3 on both sides maintain a suitable distance. Then loosen the adjusting bolt 9 to release the fixing of the connecting plate 10. Then rotate the connecting plate 10 to a suitable angle and tighten the adjusting bolt 9 to adjust the angle of the clamping part. Then place the micrometer body 16 between the two clamping blocks 11 and tighten the locking bolt 12 to drive the rubber pad 13 to press against the micrometer body 16, thereby fixing the micrometer body 16. This can solve the problem of clamping and fixing micrometer bodies 16 with different manufacturers' scale frames during the calibration process for micrometer bodies 16 with a measurement upper limit greater than 150mm.

[0033] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. An auxiliary tool for micrometer calibration, characterized in that: Includes a base plate (1), the top surface of which is fixedly connected to a slide rail (2), the side wall of which is slidably connected to two sliders (3), the side wall of which is threadedly connected to a locking pin (17), the top surface of which is fixedly connected to a mounting plate (4), the top surface of which is fixedly connected to a support rod (5), and the top surface of which is provided with an adjustment frame.

2. The auxiliary tool for micrometer calibration according to claim 1, characterized in that: The adjustment frame includes a fixing plate (6) fixedly connected to the side wall of the support rod (5) near the top. A pin (7) is fixedly connected to the side wall of the fixing plate (6). A connecting plate (10) is rotatably connected to the side wall of the pin (7). The connecting plate (10) is L-shaped and has a clamping member on its side wall.

3. The auxiliary tool for micrometer calibration according to claim 2, characterized in that: The connecting plate (10) has an arc-shaped groove (8) on its side wall, and an adjusting bolt (9) is provided in the arc-shaped groove (8). The adjusting bolt (9) is threadedly connected to the fixing plate (6).

4. The auxiliary tool for micrometer calibration according to claim 2, characterized in that: The clamping member includes a clamping block (11) fixedly connected to the side wall of the connecting plate (10). The clamping block (11) is U-shaped and the side wall of the clamping block (11) is threaded with a locking bolt (12).

5. The auxiliary tool for micrometer calibration according to claim 4, characterized in that: The locking bolt (12) is rotatably connected to a rubber pad (13) on one end face inside the clamping block (11).

6. The auxiliary tool for micrometer calibration according to claim 1, characterized in that: A positioning plate (14) is fixedly connected to the top surface of the base plate (1), and a limit block (15) is slidably connected to the side wall of the positioning plate (14).

7. The auxiliary tool for micrometer calibration according to claim 3, characterized in that: The arc-shaped groove (8) is concentric with the pin (7).

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