A device for testing the mechanical properties of a circlip

Abstract

This utility model relates to the field of circumferential ring performance testing technology, specifically to a circumferential ring mechanical performance testing device. It includes a set of circumferentially arrayed force measuring modules, with at least three force measuring modules. Each force measuring module includes a limiting member, one set of which is used to limit the inner diameter of the circumferential ring. At least one force measuring module is equipped with a force gauge, and a force transmission frame is provided corresponding to that force measuring module. The limiting member is mounted on the force transmission frame. A moving device is also included, comprising a driving device and a set of moving seats corresponding to each force measuring module. The driving device drives the set of moving seats to synchronously open and close in the radial direction. During this process, the force measuring end of the force gauge abuts against the force transmission frame to measure force. This device can improve the uniformity of the expanded circumferential ring, simulate the installation conditions of the circumferential ring, and thus improve testing accuracy and reliability.

Description

Technical Field

[0001] This utility model relates to the field of circlip performance testing technology, specifically to a circlip mechanical performance testing device. Background Technology

[0002] Snap rings (usually referring to resilient retaining rings, cotter rings, and other ring-shaped fasteners) are a type of standard part widely used in machinery, automotive, and aerospace industries. Their main function is to be installed on shaft components through radial tension to achieve axial positioning and other functions. The tension performance of snap rings directly affects the stability, safety, and service life of the assembly; therefore, accurate testing of their tension is a key step in ensuring product quality and reliability.

[0003] Currently, the tension of retainer rings is mostly measured using the counter-tension and expansion test method. However, this method has a large deviation in simulating the uniformity of the expansion of the retainer ring on the shaft, and therefore cannot accurately reflect the tension generated when the retainer ring is in use. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this utility model provides a mechanical performance testing device for circlips, which can improve the uniformity of expanded circlips and simulate the installation conditions of circlips, thereby improving the testing accuracy and reliability.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: A device for testing the mechanical properties of a retaining ring, comprising: A set of force measuring modules in a circular array, wherein the number of force measuring modules is at least 3, each force measuring module includes a limiting member, a set of the limiting members is used to limit the inner diameter of the retaining ring, at least one of the force measuring modules is provided with a force measuring device and a force transmission frame is provided on the corresponding force measuring module, and the limiting member is installed on the force transmission frame. A mobile device, comprising a driving device and a set of mobile seats corresponding one-to-one with the force measuring module, wherein the driving device is used to drive the set of mobile seats to open and close synchronously in the radial direction, during which the force measuring end of the force measuring device abuts against the force transmission frame to measure the force.

[0006] Furthermore, in the mechanical performance testing device for a chuck ring of this application, the moving device is a three-jaw chuck, the moving base corresponds to the three jaws of the three-jaw chuck, and the driving device is a driving component that is connected to the input end of the transmission mechanism in the three-jaw chuck.

[0007] The three-jaw chuck is a conventional lathe fixture in the prior art. It has a stable structure and high transmission accuracy, and its built-in synchronous transmission mechanism effectively ensures the synchronous movement of the three jaws in the radial direction. The rotary drive component can drive the three jaws to synchronously expand outward or contract inward, realizing radial movement control of the force measuring module. Furthermore, in the mechanical performance testing device for chuck rings of this application, the force measuring module includes a mounting base connected to a movable base, and both the limiting component and the force measuring device are mounted on the mounting base.

[0008] Furthermore, in this application, a mechanical performance testing device for a retaining ring includes a force transmission frame comprising a vertical plate rotatably connected at one end to a mounting base and a horizontal plate disposed at the end of the vertical plate away from the mounting base. A limiting member is mounted on the horizontal plate, and during force measurement, the force measuring end of the force measuring device abuts against the radial inner side of the vertical plate.

[0009] Furthermore, in the mechanical performance testing device for a retaining ring of this application, the horizontal plate is located radially inside the vertical plate, and the vertical plate is in a vertical position when the force measuring end of the force measuring device abuts against it. As a preferred embodiment of this application, based on the above structure, since the force measuring end of the force measuring device is radially inside the vertical plate, and the weight of the horizontal plate is biased towards the radially inside the vertical plate, the force transmission frame can abut against the force measuring end of the force measuring device before use. At this time, the force transmission frame exerts an initial and constant pressure on the force measuring device, which can be used as a force measurement reference value, thereby effectively improving the force measurement accuracy.

[0010] Furthermore, in a mechanical performance testing device for a retaining ring according to this application, the force transmission frame includes a limiting seat, which is detachably connected to a horizontal plate. The limiting component is mounted on the limiting seat. As a preferred embodiment of this application, based on the above structure, by setting a detachable limiting seat, the specifications can be changed according to different measurement needs, thereby adapting to test objects of different sizes or shapes, improving the applicability and flexibility of the device. Furthermore, in a mechanical performance testing device for a retaining ring according to this application, the limiting seat is provided with an adjustment elongated hole extending parallel to the radial direction, and a screw passes through the adjustment elongated hole to connect to the horizontal plate. This allows for radial position adjustment of the limiting component, further enhancing measurement adaptability and accuracy.

[0011] Furthermore, in the mechanical performance testing device for a retaining ring described in this application, each force measuring module is equipped with a force measuring device and a force transmission frame to ensure force measurement accuracy.

[0012] Furthermore, in the mechanical performance testing device for retaining rings disclosed in this application, the limiting member is cylindrical and vertically mounted on the force transmission frame. As a preferred embodiment of this application, based on the above structure, when the retaining ring expands radially, its inner wall rubs against the side wall of the limiting member. The cylindrical limiting member effectively reduces the frictional resistance between the contact surfaces, making the force measurement process smoother and the data more accurate.

[0013] As can be seen from the above technical solution, this utility model has the following beneficial effects: This invention provides a device for testing the mechanical properties of retaining rings. The principle is as follows: During use, the retaining ring is fitted radially outward from a set of limiting members. A moving device drives the moving seat to expand outward, thereby causing the limiting members to apply a radial force to the retaining ring. At this time, the retaining ring is simultaneously subjected to a radial outward force from the set of limiting members, while the limiting members are simultaneously subjected to a reverse force from the retaining ring. This force is transmitted to the force measuring device through a force transmission frame, allowing the force measuring device to accurately measure the force value acting on the retaining ring. By arranging multiple force measuring modules in a circumferential array, the uniformity of the expanded retaining ring can be improved, simulating the installation conditions of the retaining ring, thereby improving testing accuracy and reliability. This device is suitable for tension force testing of various open retaining ring products. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a circlip mechanical performance testing device according to an embodiment of this application; Figure 2 This is a cross-sectional view of the force measuring module in a mechanical performance testing device for a clasp according to an embodiment of this application.

[0015] In the diagram: 1-Force measuring module; 11-Limiting component; 12-Force measuring device; 13-Force transmission frame; 131-Vertical plate; 132-Horizontal plate; 133-Limiting seat; 14-Mounting seat; 2-Moving device; 21-Moving seat; 3-Clamping ring. Detailed Implementation

[0016] Combination Figure 1 and Figure 2 As shown, a device for testing the mechanical properties of a retaining ring includes... A set of force measuring modules 1 in a circular array, the number of force measuring modules 1 being at least 3, each force measuring module 1 including a limiting member 11, a set of the limiting members 11 being used to limit the inner diameter of the retaining ring 3, at least one of the force measuring modules 1 being provided with a force measuring device 12 and a force transmission frame 13 corresponding to the force measuring module 1, the limiting member 11 being mounted on the force transmission frame 13; The mobile device 2 includes a driving device and a set of mobile seats 21 corresponding to the force measuring module 1. The driving device is used to drive the set of mobile seats 21 to open and close synchronously in the radial direction. During this process, the force measuring end of the force measuring device 12 abuts against the force transmission frame 13 to measure the force.

[0017] Based on the above structure, the principle of the mechanical performance testing device for retaining rings is as follows: During use, the retaining ring 3 is fitted radially outwards onto a set of limiting members 11. The moving device 2 drives the moving base 21 to expand outwards, thereby causing the limiting members 11 to apply a radial force to the retaining ring 3. At this time, the retaining ring 3 simultaneously experiences a radially outward force from the set of limiting members 11, while the limiting members 11 also simultaneously experience a reverse force from the retaining ring 3, which is transmitted to the force measuring device 12 through the force transmission frame 13. This allows the force measuring device 12 to accurately measure the force value experienced by the retaining ring 3. By arranging multiple force measuring modules 1 in a circumferential array, the uniformity of the expanded retaining ring 3 can be improved, simulating the installation conditions of the retaining ring 3, thereby improving testing accuracy and reliability. This device is suitable for tension force testing of various open retaining ring products.

[0018] In use, the force value measured by the force gauge 12 is input to the display module, which then displays the numerical value visually for the user to read. Specifically, before force measurement, calibration is performed when the inner wall of the retaining ring 3 is just in contact with the limiting member 11. Then, the moving base 21 is driven to move radially outward a preset distance to observe the change in force value data, thereby confirming the mechanical properties of the retaining ring 3. Specifically, in this embodiment, the force gauge 12 is a pressure sensor, model DYHW-116, which is a single-point force sensor.

[0019] In this embodiment, the moving device 2 is a three-jaw chuck, the moving base 21 corresponds to the three jaws of the three-jaw chuck, and the driving device is a driving component that is connected to the input end of the transmission mechanism in the three-jaw chuck. The three-jaw chuck is a conventional lathe fixture in the prior art, with a stable structure and high transmission accuracy. Its built-in synchronous transmission mechanism can effectively ensure the synchronous movement of the three jaws in the radial direction. The rotary driving component can drive the three jaws to synchronously expand outward or contract inward, realizing radial movement control of the force measuring module. Specifically, in one embodiment, the three-jaw chuck is a manually driven type, and the driving device is a wrench that cooperates with the input end of the three-jaw chuck.

[0020] In this embodiment, the force measuring module 1 includes a mounting base 14, which is connected to the movable base 21 by screws. The limiting member 11 and the force measuring device 12 are both mounted on the mounting base 14.

[0021] In this embodiment, the force transmission frame 13 includes a vertical plate 131 rotatably connected to the mounting base 14 at one end and a horizontal plate 132 disposed at the end of the vertical plate 131 away from the mounting base 14. The limiting member 11 is installed on the horizontal plate 132. When measuring force, the measuring end of the force measuring device 12 abuts against the radial inner side of the vertical plate 131.

[0022] In this embodiment, the horizontal plate 132 is located radially inside the vertical plate 131, and the vertical plate 131 is in a vertical position when the measuring end of the force sensor 12 abuts against it. Based on the above structure, since the measuring end of the force sensor 12 is radially inside the vertical plate 131, and the weight of the horizontal plate 132 is biased towards the radially inside the vertical plate 131, the force transmission frame 13 can abut against the measuring end of the force sensor 12 before use. At this time, the force transmission frame 13 exerts an initial and constant pressure on the force sensor 12, which can be used as a force measurement reference value, thereby effectively improving the force measurement accuracy.

[0023] In this embodiment, the force transmission frame 13 includes a limiting seat 133, which is detachably connected to the horizontal plate 132. The limiting member 11 is mounted on the limiting seat 133. Based on the above structure, by setting a detachable limiting seat 133, the specifications can be changed according to different measurement needs, thereby adapting to objects of different sizes or shapes, improving the applicability and flexibility of the device. In other embodiments, the limiting seat 133 is provided with an adjustment elongated hole (not shown) extending parallel to the radial direction, which is connected to the horizontal plate 132 by screws passing through the adjustment elongated hole. This allows for radial position adjustment of the limiting member 11, further enhancing measurement adaptability and accuracy.

[0024] In this embodiment, each force measuring module 1 is equipped with a force measuring device 12 and a force transmission frame 13.

[0025] In this embodiment, the limiting member 11 is cylindrical and is vertically mounted on the force transmission frame 13. Based on this structure, when the retaining ring 3 expands radially, its inner wall will rub against the side wall of the limiting member 11. The cylindrical limiting member 11 effectively reduces the frictional resistance between the contact surfaces, making the force measurement process smoother and the data more accurate. Specifically, the limiting member 11 is a pin.

[0026] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on the explanation herein, those skilled in the art can conceive of other specific embodiments of this utility model without creative effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A device for testing the mechanical properties of a retaining ring, characterized in that: include A set of force measuring modules (1) in a circular array, the number of force measuring modules (1) being at least 3, the force measuring module (1) including a limiting member (11), a set of the limiting members (11) being used to limit the inner diameter of the retaining ring (3), at least one of the force measuring modules (1) being provided with a force measuring device (12) and a force transmission frame (13) being provided on the corresponding force measuring module (1), the limiting member (11) being installed on the force transmission frame (13); The mobile device (2) includes a driving device and a set of mobile seats (21) corresponding to the force measuring module (1). The driving device is used to drive the set of mobile seats (21) to open and close synchronously in the radial direction. During this process, the force measuring end of the force measuring device (12) abuts against the force transmission frame (13) to measure the force.

2. The mechanical performance testing device for a retaining ring according to claim 1, characterized in that: The moving device (2) is a three-jaw chuck, the moving base (21) corresponds to the three jaws of the three-jaw chuck, and the driving device is a driving component that is connected to the input end of the transmission mechanism in the three-jaw chuck.

3. The mechanical performance testing device for a retaining ring according to claim 1, characterized in that: The force measuring module (1) includes a mounting base (14), which is connected to a movable base (21). The limiting member (11) and the force measuring device (12) are both mounted on the mounting base (14).

4. The mechanical performance testing device for a retaining ring according to claim 1, characterized in that: The force transmission frame (13) includes a vertical plate (131) rotatably connected to the mounting base (14) at one end and a horizontal plate (132) disposed at the end of the vertical plate (131) away from the mounting base (14). A limiting member (11) is installed on the horizontal plate (132). When measuring force, the measuring end of the force measuring device (12) abuts against the radial inner side of the vertical plate (131).

5. The mechanical performance testing device for a retaining ring according to claim 4, characterized in that: The horizontal plate (132) is located radially inside the vertical plate (131), and the vertical plate (131) is in a vertical position when the measuring end of the force measuring device (12) abuts against the vertical plate (131).

6. The mechanical performance testing device for a retaining ring according to claim 4, characterized in that: The force transmission frame (13) includes a limiting seat (133), which is detachably connected to the horizontal plate (132), and the limiting member (11) is installed on the limiting seat (133).

7. The mechanical performance testing device for a retaining ring according to claim 6, characterized in that: The limiting seat (133) is provided with an adjustment elongated hole extending in a direction parallel to the radial direction, and is connected to the cross plate (132) by a screw passing through the adjustment elongated hole.

8. The mechanical performance testing device for a retaining ring according to claim 1, characterized in that: Each force measuring module (1) is equipped with a force measuring device (12) and a force transmission frame (13).

9. The mechanical performance testing device for a retaining ring according to claim 1, characterized in that: The limiting member (11) is cylindrical and is vertically installed on the force transmission frame (13).

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