A force calibration device for measuring the inner diameter of aerospace thin-walled bearing rings

Abstract

This utility model relates to the technical field of measuring instruments and force measuring devices, and discloses a force calibration device for measuring the inner diameter of aerospace thin-walled bearing rings, comprising: a base, a measuring instrument body for testing mounted on the top of the base, and a force gauge for force measurement mounted on one side of the base; an extension structure, set on the front wall of the base for recording measurement data, the extension structure including a tray and an extension section, the front wall of the base having a slot for sliding and storing the tray, the tray being located in the slot, and two deformable extension sections symmetrically arranged on the top of the tray. By setting a pull-out tray, paper is placed on the tray, and the downward pressure generated by the deformation of the extension section limits the paper. The tray is located directly in front of the base, facilitating observation of the force gauge and the measuring instrument body and timely recording of data. After the test is completed, the tray can be pushed into the cavity at the bottom of the base for storage, without affecting the storage of the entire device.

Description

Technical Field

[0001] This utility model relates to the field of measuring instrument force measuring device technology, and in particular to a force calibration device for measuring the inner diameter of aerospace thin-walled bearing rings. Background Technology

[0002] The inner diameter of bearings is usually measured using a D92-series inner diameter measuring instrument. The measurement method is a contact comparison relative measurement. The measuring contact generates a certain measuring force on the surface of the workpiece being measured. If the measuring force is too large, it will cause elastic deformation of the workpiece being measured, affecting the accuracy of the measurement results. In order to avoid excessive deformation of thin-walled bearing rings, the measuring force should be minimized as much as possible while ensuring stable readings. This study explores the use of a force gauge to calibrate the measuring force on the bearing inner diameter measuring instrument, finds out the variation law of the measuring force on the elastic deformation of the bearing rings, and determines the maximum limit measuring force for bearing rings with different wall thicknesses.

[0003] According to the prior art, a combined special bearing force measuring device (publication number: CN215931284U) is disclosed, which includes a bearing height measuring instrument, a precision manual displacement platform device, a bearing inner diameter measuring instrument, a high-precision electronic tension and compression gauge, a bearing height measuring instrument column and a connecting device. The bearing height measuring instrument is placed horizontally on the worktable. A precision manual displacement platform is detachably mounted on the upper surface of the bearing height measuring instrument. The bearing inner diameter measuring instrument is placed on the upper surface of the precision manual displacement platform. The bearing ring is detachably mounted on the bearing inner diameter measuring instrument. One side of the upper surface of the bearing height measuring instrument is connected to the column of the bearing height measuring instrument, and the two are set perpendicular to each other. The column of the bearing height measuring instrument is fixedly connected to one end of a high-precision electronic tension / compression gauge through a connecting device. The sensing contact at the other end of the high-precision electronic tension / compression gauge is in contact with the inner diameter of the bearing ring. In the calibration process of existing technology, multiple sets of experimental data are recorded, and the recording method is mainly handwritten on paper. Since the entire device is placed on a workbench, the data can only be recorded on one side of the device. The user has to move their body repeatedly to look at the data on the instrument and then record it, which makes the data recording process inconvenient. There is room for optimization in the location and method of data recording.

[0004] To address this, we propose a force calibration device for measuring the inner diameter of aerospace thin-walled bearing rings. Utility Model Content

[0005] This invention primarily addresses the technical problem of requiring repeated body movement and visual observation before recording data, by providing a force calibration device for measuring the inner diameter of thin-walled bearing rings in aviation applications.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a force calibration device for measuring the inner diameter of an aerospace thin-walled bearing ring, comprising: A base, on the top of which is mounted a measuring instrument body for detection, and on one side of which is mounted a force gauge for measuring force; An extension structure is provided on the front wall of the base for recording measurement data. The extension structure includes a tray and an extension section. The front wall of the base has a slot for sliding and storing the tray. The tray is located in the slot. Two deformable extension sections are symmetrically arranged on the top of the tray. The extension sections can press down and fix the paper used for recording data.

[0007] In a preferred embodiment of this utility model, the bottom of the base is hollow, the slot is a rectangular slot and communicates with the cavity at the bottom of the base, and the tray can be slidably stored in the cavity.

[0008] In a preferred embodiment of this utility model, the pallet is a rectangular plate with the same width as the slot and the thickness of the pallet is less than the height of the slot.

[0009] In a preferred embodiment of this utility model, the expansion structure further includes a front baffle and a magnet. The front baffle is fixedly connected to the support plate, and the magnet is fixedly installed on one side of the front baffle. The magnet can attract the base to limit the front baffle and the support plate.

[0010] In a preferred embodiment of this utility model, the front baffle and the support plate are integrally formed, the front baffle and the support plate are perpendicularly arranged, and the support plate and the front baffle together form a plate with an L-shaped cross section. The magnet is fixedly installed on the side of the front baffle near the base.

[0011] In a preferred embodiment of the present invention, the extension structure further includes an end and a tail, which are respectively fixedly installed at both ends of the extension section. The tail can be pressed down to the top surface of the support plate as the extension section deforms, and the end is rotatably connected to the support plate.

[0012] In a preferred embodiment of this utility model, the head and tail are integrally formed with the extension section, the head is rotatably connected to the support plate via a rotating shaft, and the extension section and tail form a hook.

[0013] This invention provides a force calibration device for measuring the inner diameter of thin-walled bearing rings in aerospace applications. It offers the following advantages: 1. This aerospace thin-walled bearing ring inner diameter measuring force calibration device features a pull-out tray. Paper is placed on the tray, and the downward pressure generated by the deformation of the extension section limits the paper's position. The tray is located directly in front of the base, facilitating observation and timely recording of data from the force gauge and the measuring instrument itself. After testing, the tray can be pushed into the cavity at the bottom of the base for storage, without affecting the overall storage of the device. Because the tray is located in front of the measuring instrument, there is no need to repeatedly move the body, and the position of looking directly at the measuring instrument makes observation and data recording more convenient, ensuring the convenience of the calibration process, especially data recording.

[0014] 2. This aerospace thin-walled bearing ring inner diameter measuring force calibration device limits the position of the support plate by means of a front baffle. When the support plate is stored in the cavity of the base, the front baffle restricts the end of the support plate from falling into the cavity through the slot, thereby limiting the position of the support plate. The magnet can attract the base, ensuring that the front baffle and the support plate will not slide out of the cavity by chance, thus ensuring the stability of storage.

[0015] 3. This aerospace thin-walled bearing ring inner diameter measuring force calibration device, through the extension section, end head and tail head forming a pressing rod body, the contact position between the tail head and the paper is adjusted by rotating the end head, while the deformation force provided by the extension section can press down the tail head to limit the paper. The two symmetrically arranged pressing rod bodies ensure that the paper will not shift or wrinkle during the data recording process, which is convenient for manual data recording. Attached Figure Description

[0016] Figure 1 This is one of the overall perspective views of this utility model; Figure 2 This is the second overall perspective view of the present utility model; Figure 3 This is one of the perspective views of the expansion component of this utility model; Figure 4 This is the second perspective view of the expansion component of this utility model; Figure 5 This is a perspective view of the extension section, end, and tail of this utility model.

[0017] Legend: 10. Base; 11. Measuring instrument body; 12. Force gauge; 20. Support plate; 21. Front baffle; 22. Magnet; 30. Extension section; 31. End; 32. Tail. Detailed Implementation

[0018] A force calibration device for measuring the inner diameter of aerospace thin-walled bearing rings, such as... Figure 1 and Figure 2 As shown, it includes: The base 10 has a measuring instrument body 11 for detection mounted on its top and a force gauge 12 for measuring force mounted on one side of the base 10. like Figure 2 , Figure 3 and Figure 4 As shown, an extension structure is set on the front wall of the base 10 for recording measurement data. The extension structure includes a tray 20 and an extension section 30. The front wall of the base 10 has a slot for sliding and storing the tray 20. The tray 20 is located in the slot. Two deformable extension sections 30 are symmetrically arranged on the top of the tray 20. The extension sections 30 can press down and fix the paper for recording data. The bottom of the base 10 is hollow. The slot is a rectangular slot and communicates with the cavity at the bottom of the base 10. The tray 20 can slide and be stored in the cavity. The tray 20 is a rectangular plate with the same width as the slot. The thickness of the tray 20 is less than the height of the slot. In this solution, since the testing process involves a large amount of data recording, the data needs to be manually recorded on paper. By setting up a pull-out tray 20, the paper is placed on the tray 20, and the downward pressure generated by the deformation of the extension section 30 limits the paper. The tray 20 is located directly in front of the base 10, which facilitates the observation of the data of the force gauge 12 and the measuring instrument body 11 and timely recording of the data. After the test is completed, the tray 20 can be pushed into the cavity at the bottom of the base 10 for storage, without affecting the storage of the entire device.

[0019] like Figure 3 As shown, the extended structure also includes a front baffle 21 and a magnet 22. The front baffle 21 is fixedly connected to the support plate 20, and the magnet 22 is fixedly installed on one side of the front baffle 21. The magnet 22 can attract the base 10 to limit the front baffle 21 and the support plate 20. The front baffle 21 and the support plate 20 are integrally formed and are perpendicularly arranged. The support plate 20 and the front baffle 21 together form a plate with an L-shaped cross section. The magnet 22 is fixedly installed on the side of the front baffle 21 near the base 10. As a supplement to the above solution, the front baffle 21 limits the position of the tray 20. When the tray 20 is stored in the cavity of the base 10, the front baffle 21 restricts the end of the tray 20 from falling into the cavity through the slot, thereby limiting the position of the tray 20. The magnet 22 can attract the base 10, ensuring that the front baffle 21 and the tray 20 will not slide out of the cavity at will, thus ensuring the stability of storage.

[0020] like Figure 5As shown, the extension structure also includes an end 31 and a tail 32. The end 31 and the tail 32 are respectively fixedly installed at both ends of the extension section 30. The tail 32 can be pressed down to the top surface of the support plate 20 as the extension section 30 deforms. The end 31 is rotatably connected to the support plate 20. The end 31 and the tail 32 are integrally formed with the extension section 30. The end 31 is rotatably connected to the support plate 20 through a rotating shaft. The extension section 30 and the tail 32 form a hook. In this design, the extension section 30, the end 31, and the tail 32 together form a pressing rod. The contact position between the tail 32 and the paper is adjusted by rotating the end 31, while the deformation force provided by the extension section 30 can press down the tail 32 to limit the paper. The two symmetrically arranged pressing rods ensure that the paper will not shift or wrinkle during the data recording process, which facilitates manual data recording.

[0021] The working principle of this utility model is as follows: The measuring instrument body 11 is usually measured using a D92-series internal diameter measuring instrument; Principle of force measurement calibration Taking the force calibration of the D923 bearing inner diameter checker as an example: the force calibration requires the D923 inner diameter checker, measuring instrument, workpiece to be measured, high-precision displacement platform, high-precision force gauge, and platform device for installing the force gauge. Place the adjusted D923 inner diameter checker on the high-precision displacement platform, place the high-precision displacement platform on the base 10 with the force gauge 12, align the sensing contact of the force gauge 12 with the connecting part of the measuring contact of the D923 instrument, and then rotate the micrometer of the high-precision displacement platform to move the displacement platform and the measuring instrument at the same time. When the sensing contact of the force gauge 12 contacts the connecting part of the measuring contact of the D923 instrument, the actual measured force in this state can be read from the display screen of the force gauge. With the force gauge 12 sensor in a non-contact position and the D923 instrument's measuring contact connector in the measuring position, and the workpiece to be measured in the measuring position, rotate the micrometer on the displacement platform to move the displacement platform and the measuring instrument simultaneously. When the force gauge 12 sensor just contacts the D923 instrument's measuring contact connector, the force gauge 12 displays a small measuring force. This measuring force is considered the initial measuring force P0 and should be controlled below 0.1N. Then, remove the workpiece to be measured. The instrument's measuring contact will generate a rebound force. Record the measuring force P1 after the workpiece is removed in a stable state. At this time, the actual measuring force of the D923 instrument is P = P1 - P0. By adjusting the measuring force knob of the D923 instrument and using the above method for calibrating the measuring force, the required actual measuring force can be obtained. A pull-out tray 20 is provided. When the tray 20 is pulled out, the bottom of the front baffle 21 contacts the worktable to form a support. The tray 20 is tilted at a certain angle, and the paper is placed on the tray 20. The paper is limited by the downward pressure generated by the deformation of the extension section 30. The tray 20 is located directly in front of the base 10, which facilitates the observation and timely recording of data from the force gauge 12 and the measuring instrument body 11. The extension section 30, the end 31 and the tail 32 together form a downward pressure rod. The contact position between the tail 32 and the paper is adjusted by rotating the end 31. The deformation force provided by the extension section 30 can press down the tail 32 to limit the paper. The two symmetrically arranged downward pressure rods ensure that the paper will not shift or wrinkle during the data recording process. Data can be recorded on flat paper.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An aero thin-wall bearing inner diameter measuring force calibration device, characterized in that, include: A base (10) is provided with a measuring instrument body (11) for detection mounted on the top of the base (10) and a force gauge (12) for measuring force mounted on one side of the base (10). An extension structure is provided on the front wall of the base (10) for recording measurement data. The extension structure includes a tray (20) and an extension section (30). The front wall of the base (10) has a slot for sliding and storing the tray (20). The tray (20) is located in the slot. Two deformable extension sections (30) are symmetrically arranged on the top of the tray (20). The extension sections (30) can press down to fix the paper used for recording data.

2. The aero thin-wall bearing ring inner diameter measuring force calibration device according to claim 1, characterized in that: The bottom of the base (10) is hollow, the slot is a rectangular slot and communicates with the cavity at the bottom of the base (10), and the tray (20) can be slidably stored in the cavity.

3. The aero thin-wall bearing ring inner diameter measuring force calibration device according to claim 1, characterized in that: The tray (20) is a rectangular plate with the same width as the slot and the thickness of the tray (20) is less than the height of the slot.

4. The aero thin-wall bearing ring inner diameter measuring force calibration device according to claim 1, characterized in that: The extended structure also includes a front baffle (21) and a magnet (22). The front baffle (21) is fixedly connected to the support plate (20), and the magnet (22) is fixedly installed on one side of the front baffle (21). The magnet (22) can attract the base (10) to limit the front baffle (21) and the support plate (20).

5. The aero thin-wall bearing ring inner diameter measuring force calibration device according to claim 4, characterized in that: The front baffle (21) and the support plate (20) are integrally formed. The front baffle (21) and the support plate (20) are set vertically. The support plate (20) and the front baffle (21) together form a plate with an L-shaped cross section. The magnet (22) is fixedly installed on the side of the front baffle (21) near the base (10).

6. The aero thin-wall bearing ring inner diameter measuring force calibration device according to claim 1, characterized in that: The extension structure also includes an end (31) and a tail (32), which are fixedly installed at both ends of the extension section (30). The tail (32) can be pressed down to the top surface of the support plate (20) as the extension section (30) deforms. The end (31) is rotatably connected to the support plate (20).

7. The aero thin-wall bearing ring inner diameter measuring force calibration device according to claim 6, characterized in that: The end (31) and tail (32) are integrally formed with the extension section (30). The end (31) is rotatably connected to the support plate (20) through a rotating shaft. The extension section (30) and tail (32) form a hook.

Images