Test method, test device and assembly method for setting parameters of a lock

Abstract

The application provides a test device for locking setting parameters, which comprises a test main body, a distance test piece and an inclination test piece, the test main body is rotatably sleeved outside a rotating cylinder, the distance test piece is movably arranged in the side wall of the test main body, the inclination test piece is rotatably arranged in the distance test piece, a track groove is arranged in one end of the inclination test piece close to the rotating cylinder, and a ball is rotatably arranged in the track groove. The application also provides a test method and an assembly method for locking setting parameters. The rotating cylinder and the ball with different materials, different size tolerances and different surface finishes can be randomly replaced, the locking wedge angle and the contact surface normal pressure can be accurately and quantitatively adjusted, a large number of orthogonal tests under the coupling action of multiple factors can be completed by one set of test device or test method, accurate design parameters are provided for the mechanism design of the ball locking outer cylindrical surface type, and meanwhile, the test device has the advantages of simple structure, easy operation and low manufacturing cost.

Description

Technical Field

[0001] This invention relates to the field of mechanical transmission technology, and more specifically, to a method, apparatus, and assembly method for testing locking setting parameters. Background Technology

[0002] The existing mop trays of robotic vacuum cleaners typically extend, retract, or turn via a rotary module, and lift the mop tray via a lifting module. Lifting modules often employ threaded or spiral groove structures. If the lifting action and rotary turning action of the mop tray are to be linked together to achieve a specific action logic, components such as overrunning clutches, friction wheels, or magnetic resistance modules are required. This makes the structure of the robotic vacuum cleaner overly complex, increases manufacturing costs, and reduces reliability.

[0003] Currently, reverse locking of the mop disc in robotic vacuum cleaners has been achieved using structures such as steel ball wedging. This is designed by selecting appropriate parameters such as the locking wedge angle, center distance, and steel ball thrust. If the design is unreasonable, problems such as unreliable locking, inability to enter or leave the locking position can easily occur. However, the optimal locking wedge angle, optimal locking force, and other parameters are closely related to the selection of the distance between the ball bearings and the track locking surfaces, the dimensional tolerances of the locked cylinder, and the arrangement of the ball bearing tracks. Furthermore, the materials, friction coefficients, and surface finishes of the ball bearings, ball bearing tracks, and cylinders are also important influencing factors. Therefore, determining the optimal design parameters through experimentation requires multiple orthogonal experiments, which are time-consuming and costly. Obtaining the optimal locking wedge angle, track locking surface distance, and locking force also requires significant time and experimental costs. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this application provides a testing method, testing device, and assembly method for locking setting parameters.

[0005] This application discloses a method for testing locking setting parameters, including: presetting an inclination angle α and an initial distance a, where a = R + 2r; where α is the inclination angle of the track groove, a is the distance between the bottom wall of the track groove and the central axis of the rotating cylinder, R is the radius of the rotating cylinder, and r is the radius of the ball bearing; adjusting and decreasing the value of a once, and adjusting α multiple times to test the locking state; if the locking state test after adjusting α is in the optimal locking state, then the values ​​of α and a are recorded; where the optimal locking state is the state where the rotating cylinder locks when rotated in the reverse direction and exits the locking state when rotated in the forward direction; according to the formula... The optimal locking wedge angle β is calculated. The optimal locking wedge angle β is the angle between the tangent plane between the bottom wall of the track groove and the ball and the tangent plane between the rotating cylinder and the ball under the optimal locking state.

[0006] Preferably, the testing method for locking setting parameters further includes the following steps: While presetting the tilt angle α and initial distance a, also presetting the friction coefficient f1, friction coefficient f2, mass G, and number of balls n; where f1 is the friction coefficient between the rotating cylinder and the balls, f2 is the friction coefficient between the balls and the track groove, G is the mass of a single ball, and n is the number of balls in the track groove; after testing to the optimal locking state, further testing is performed according to the formula... Calculate the normal force N exerted by the ball bearings at the bottom of the track groove on the rotating cylinder under optimal locking conditions; calculate the minimum locking torque M required for the rotating cylinder to exit the locking state using the formula M=N·f1·R.

[0007] Preferably, the testing method for locking setting parameters further includes the following steps: While presetting the tilt angle α and initial distance a, also presetting the friction coefficient f1, friction coefficient f2, mass G, and elastic thrust F; where f1 is the friction coefficient between the rotating cylinder and the ball, f2 is the friction coefficient between the ball and the track groove, G is the mass of a single ball, and F is the elastic force of the elastic element; after testing to the optimal locking state, the elastic force F of the elastic element in the optimal locking state is measured, and the result is calculated according to the formula... Calculate the normal force N of the ball bearings on the rotating cylinder under the optimal locking state; calculate the minimum locking torque M required for the rotating cylinder to exit the locking state according to the formula M=N·f1·R.

[0008] Preferably, the locking state test includes: using a torque tester to rotate a rotating cylinder; determining whether the current locking state is in the optimal locking state; if so, reading the minimum locking torque M required for the torque tester to rotate the rotating cylinder out of the locking state.

[0009] This application also provides an assembly method, including selecting a rotating cylinder, ball bearing, and track groove adapted to a test method for locking setting parameters; obtaining assembly data a, α, and β according to the test method for locking setting parameters; and assembling the product using the assembly data a, α, and β.

[0010] This application also provides an assembly method, including selecting a rotating cylinder, ball bearing, and track groove adapted to a test method for locking setting parameters; obtaining assembly data a, α, β, and M according to the test method for locking setting parameters; and assembling the product using the assembly data a, α, β, and M.

[0011] This application also provides an assembly method, including selecting a rotating cylinder, ball, track groove, and elastic element adapted to a test method for locking setting parameters; obtaining assembly data a, α, β, and M according to the test method for locking setting parameters; and assembling the product using the assembly data a, α, β, and M.

[0012] This application also provides a testing device for locking setting parameters, including a testing body, a distance testing component, and an inclination testing component. The testing body is rotatably sleeved on the outside of a rotating cylinder. Along the radial direction of the rotating cylinder, the distance testing component is movably inserted through the side wall of the testing body. The inclination testing component is rotatably inserted through the distance testing component. A track groove is opened at one end of the inclination testing component near the rotating cylinder, and a ball is rolled in the track groove. Along the direction from the bottom to the top of the track groove, the distance between the groove wall and the rotating cylinder gradually increases. When adjusting and decreasing the value of 'a' once and adjusting 'α' multiple times to perform the locking state testing step, the value of 'a' is decreased by adjusting the distance testing component, and the value of 'α' is adjusted by adjusting the inclination testing component.

[0013] Preferably, the distance test piece includes a threaded column and a first gear scale ring at one end of the threaded column. The test body has a threaded inner hole on its side wall, and the other end of the threaded column is screwed into the threaded inner hole. The first gear scale ring has multiple sequentially spaced teeth, with a scale line between any two adjacent teeth. The tilt angle test piece rotates and passes through the threaded column. The test steps, including adjusting and decreasing the value of 'a' once and adjusting 'α' multiple times to achieve a locked state, include the following sub-steps: reading the scale line reading Z1 when a = R + 2r; rotating the threaded column to decrease the value of 'a' and then reading the scale line reading Z2, where the number of teeth is Z, and the lead of one thread of the threaded column is P; using the formula... The value of 'a' is calculated; the locking state is tested by adjusting 'α' multiple times.

[0014] Preferably, the distance test piece further includes a distance positioning ring, which is detachably installed on the test body. The positioning end of the distance positioning ring is snapped and fixed between two adjacent gear teeth. Before the locking state test step of adjusting α multiple times, the distance positioning ring is installed on the test body and snapped and fixed with the first gear scale ring.

[0015] The beneficial effects of this application are as follows: This application allows for the replacement of rotating cylinders and balls with different materials, dimensional tolerances, and surface finishes at will; it can precisely and quantitatively adjust the locking wedge angle and the normal pressure on the contact surface; a set of testing devices or testing methods can complete a large number of orthogonal tests under the coupled effects of multiple factors; it provides accurate design parameters for the design of ball-locking outer cylindrical surface mechanisms; at the same time, the testing device has a simple structure, is easy to operate, and has low manufacturing cost. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the test device for setting the locking parameters in the embodiment;

[0018] Figure 2 This is another structural schematic diagram of the test device for locking setting parameters in the embodiment;

[0019] Figure 3 This is a schematic diagram of the structure of the test subject in the embodiment;

[0020] Figure 4 This is a schematic diagram of the distance test piece in the embodiment;

[0021] Figure 5 This is a schematic diagram of the tilt angle test specimen in the embodiment;

[0022] Figure 6 This is another structural schematic diagram of the tilt angle test piece in the embodiment;

[0023] Figure 7 This is a schematic diagram of the distance positioning ring in the embodiment;

[0024] Figure 8 This is a flowchart of the test method for setting the locking parameters in Example 3;

[0025] Figure 9 This is a flowchart of the test method for the locking setting parameters in Example 4;

[0026] Figure 10 This is a flowchart of the test method for setting the locking parameters in Example 5;

[0027] Figure 11 This is a schematic diagram of the structure of the ball cylindrical locking mechanism assembled by the assembly method in Example 8;

[0028] Figure 12 This is a schematic diagram of another ball-bearing cylindrical locking mechanism assembled by the assembly method in Example 8.

[0029] Figure label:

[0030] 1. Rotating cylinder; 2. Ball bearing; 3. Test body; 31. Threaded inner hole; 32. Positioning groove; 4. Distance test piece; 41. Threaded column; 42. First gear scale ring; 421. Gear tooth; 422. Scale line; 5. Inclination test piece; 51. Ball bearing groove; 52. Rotating column; 53. Second gear scale ring; 6. Distance positioning ring; 61. Positioning ring body; 62. Positioning protrusion; 63. Positioning tooth; 7. Inclination positioning ring; 8. Locking body. Detailed Implementation

[0031] The following drawings disclose several embodiments of this application. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this application. That is, in some embodiments of this application, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0032] It should be noted that all directional indications in the embodiments of this application, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indication will also change accordingly.

[0033] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit this application. They are merely used to distinguish components or operations described using the same technical terms and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0034] To further understand the content, features, and effects of this application, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0035] Example 1:

[0036] Reference Figure 1-3 , Figure 1 This is a schematic diagram of the test device for setting the locking parameters in the embodiment. Figure 2 This is another schematic diagram of the test device for locking setting parameters in the embodiment. Figure 3 The diagram illustrates the structure of the test body in this embodiment. The testing device for locking setting parameters includes a test body 3, a distance test piece 4, and an inclination test piece 5. The test body 3 is rotatably fitted onto the outside of the rotating cylinder 1. Along the radial direction of the rotating cylinder 1, the distance test piece 4 is movably inserted through the side wall of the test body 3. The inclination test piece 5 is rotatably inserted through the distance test piece 4. A track groove 51 is provided at one end of the inclination test piece 5 near the rotating cylinder 1, and the ball bearing 2 rolls within the track groove 51. Along the direction from the bottom to the top of the track groove 51, the distance between the groove wall of the track groove 51 and the rotating cylinder 1 gradually increases.

[0037] The locking parameter testing device in this embodiment is used to test the locking parameters between the rotating cylinder 1 and the ball 2. In specific applications, the testing device needs to be used in conjunction with the rotating cylinder 1. The testing body 3 is a hollow cylindrical shape with a central hole along its axial direction. The rotating cylinder 1 rotates and passes through the central hole, and the outer surface of the rotating cylinder 1 can slide in close contact with or with clearance against the wall of the central hole. The ball 2 can be spherical or cylindrical, etc.; this embodiment uses a spherical ball. A through hole is provided on the side wall of the testing body 3, and a distance testing element 4 is movably inserted into the through hole. An inclination testing element 5 rotates and passes through the distance testing element 4, and a track groove 51 is provided at the end of the inclination testing element 5 near the rotating cylinder 1. Adjusting the distance testing element 4 to move closer to or further away from the rotating cylinder 1 causes the inclination testing element 5 and the ball 2 located in the track groove 51 to move closer to or further away from the rotating cylinder 1 simultaneously. Rotating the tilt test piece 5 allows it to rotate within the distance test piece 4, thereby changing the tilt angle of the track groove 51 located at one end of the tilt test piece 5.

[0038] Refer to together Figure 4 , Figure 4 The diagram illustrates the structure of the distance testing component in this embodiment. Preferably, the distance testing component 4 includes a threaded post 41 and a first gear scale ring 42 located at one end of the threaded post 41. The side wall of the testing body 3 has a threaded inner hole 31, and the other end of the threaded post 41 is screwed into the threaded inner hole 211. The first gear scale ring 42 has multiple teeth 421 arranged at intervals, and a scale line 422 is provided between any two adjacent teeth 421. The tilt angle testing component 5 is rotatably inserted into the threaded post 41. By rotating the threaded post 41, the screwing depth between the threaded post 41 and the threaded inner hole 211 can be changed, causing the threaded post 41 to move closer to or away from the rotating cylinder, thereby driving the tilt angle testing component 5 and the ball bearing 2 located in the track groove 51 to move closer to or away from the rotating cylinder 1 simultaneously. The screwed rotation method enables gradual adjustment of the distance, improving the accuracy of the distance adjustment. By setting the first gear scale ring 42, when the threaded column 41 is rotated for distance adjustment, the first gear scale ring 42 rotates synchronously. The first gear scale ring 42 has multiple gear teeth 421 and scale lines 422 arranged in sequence at intervals. By observing the changes in the scale lines 422, the angle of rotation of the threaded column 41 during adjustment can be intuitively and accurately understood. When the threaded column 41 rotates in the threaded inner hole 211, the lead of both the threaded column 41 and the threaded inner hole 211 is known. Thus, by observing the changes in the scale lines 422, the magnitude of the axial displacement of the threaded column 41 can be calculated, improving the accuracy of distance adjustment and the accuracy of test results.

[0039] Refer to together Figure 5-6 , Figure 5This is a schematic diagram of the tilt angle test specimen in the embodiment. Figure 6 This is another structural schematic diagram of the tilt angle test piece in the embodiment. Preferably, the tilt angle test piece 5 includes a rotating column 52 and a second gear scale ring 53 disposed at one end of the rotating column 52. The other end of the rotating column 52 is rotatably inserted into a threaded column 41, and a track groove 51 is formed at the other end of the rotating column 52. In specific applications, the specific structure and principle of the second gear scale ring 53 are similar to those of the first gear scale ring 42. That is, the second gear scale ring 53 also has multiple teeth and scale lines. Rotating the rotating column 52 drives the track groove 51 to rotate synchronously, thereby changing the tilt angle of the track groove 51. At this time, the second gear scale ring 53 rotates synchronously with the rotating column 52. By observing the change in the scale lines of the second gear scale ring 53 before and after rotation, the rotation angle of the rotating column 52 can be obtained, that is, the tilt angle of the track groove 51 can be obtained. In this way, the rotation of the rotating column 52 can be quantitatively and precisely controlled, improving the accuracy of the test results. It should be noted that the rotating column 52 and the threaded column 41 are engaged and rotated, that is, the relative positions of the rotating column 52 and the threaded column 41 in the axial direction are fixed. The rotation of the threaded column 41 will not drive the rotating column 52 to rotate, but the axial movement of the threaded column 41 will drive the rotating column 52 to move synchronously in the axial direction.

[0040] Refer to together Figure 7 , Figure 7The diagram shows the structure of the distance positioning ring in the embodiment. Preferably, the test device for locking setting parameters further includes a distance positioning ring 6. The distance positioning ring 6 is detachably installed on the test body 3, and the positioning end of the distance positioning ring 6 is snapped and fixed between two adjacent gear teeth 421. In practical applications, the distance positioning ring 6 includes a positioning ring body 61, at least one positioning protrusion 62, and at least one positioning tooth 63. In this embodiment, there are two positioning protrusions 62 and one positioning tooth 63. The positioning ring body 61 is annular in shape. The two positioning protrusions 62 are respectively located on the inner walls of opposite sides of the positioning ring body 61. The positioning tooth 63 is located on the positioning ring body 61 and corresponds to the first gear scale ring 42. The test body 3 has a positioning groove 32 at the position corresponding to the positioning protrusion 62. When the distance positioning ring 6 is sleeved on the outside of the test body 3, the positioning protrusion 62 extends into the positioning groove 32, so that the distance positioning ring 6 is engaged and fixed with the test body 3. At this time, the positioning tooth 63 is engaged between two adjacent teeth 421 of the first gear scale ring 42, thereby engaging and fixing the distance test piece 4 and preventing the distance test piece 4 from rotating during the locking parameter test, which would cause inaccurate test data. Meanwhile, the positioning tooth 63 can also serve as a reference for the scale line 422 on the first gear scale ring 42, facilitating the reading of the angle by which the distance positioning ring 6 has rotated and improving the accuracy of the test. Specifically, the test device for locking the setting parameters also includes an inclination positioning ring 7, which is used to lock and position the inclination test piece 5 and assist in reading. The structure and principle of the inclination positioning ring 7 are similar to those of the distance positioning ring 6, and will not be described in detail here. The distance positioning ring 6 and the inclination positioning ring 7 are detachably installed at the top and bottom of the test body 3, respectively. Specifically, after the threaded column 41 has rotated completely, that is, after the distance to the test piece 4 has been adjusted, the distance positioning ring 6 is installed on the test body 3. The distance positioning ring 6 locks and fixes the distance test piece 4. Then, the rotating column 52 is rotated. After the rotation is completed, the tilt positioning ring 7 is installed on the test body 3. The tilt positioning ring 7 locks and fixes the tilt test piece 5. At this time, the rotating cylinder 1 can be rotated to perform the locking test. The tilt angle of the track groove 51 and the distance between the bottom wall of the track groove 51 and the central axis of the rotating cylinder can be obtained by the scale line 422 on the first gear scale ring 42 and the scale line on the second gear scale ring 53.

[0041] Preferably, the testing device for the locking setting parameters further includes a torque testing component, which is located on the side of the rotating cylinder 1 away from the test body 3. In specific applications, the torque testing component is a torque wrench. By rotating the rotating cylinder 1 with the torque wrench, the rotational force required for the rotation of the rotating cylinder 1 can be directly obtained, improving the convenience and accuracy of the locking setting parameter testing.

[0042] Example 2:

[0043] Rereference Figure 1-7The difference between the locking setting parameter testing device in this embodiment and that in Embodiment 1 is that the number of distance test pieces 4, tilt angle test pieces 5, and positioning teeth 63 in this embodiment are all four. The side wall of the test body 3 has four threaded inner holes 31. Along the rotation direction of the rotating cylinder 1, the four threaded inner holes 31 are respectively arranged around the test body 3, and the line connecting the four threaded inner holes 31 forms a rectangle. The four threaded inner holes 31 are opposite each other. The four distance test pieces 4 are respectively inserted through the four threaded inner holes 31. The four tilt angle test pieces 5 are respectively rotated through the four distance test pieces 4. The four positioning teeth 63 are arranged in a series of intervals around the positioning ring body 61, and each corresponds to one of the four first gear scale rings 42. Each tilt angle test piece 5 has a track groove 51 at its other end, and each track groove 51 contains at least one ball bearing 2. By setting multiple track grooves 51, the rotating cylinder 1 has multiple locking test points with the testing device when it rotates. This can increase the locking force of the testing device on the rotating cylinder 1. At the same time, since the rotating cylinder 1 will rub against the ball 2 when it rotates, setting multiple track grooves 51 is equivalent to locking the rotation of the rotating cylinder 1 from multiple different positions. This makes the locking force on the rotating cylinder 1, that is, the friction force with the ball 2, reach a state of force balance, preventing the rotating cylinder 1 from radial displacement and ensuring the stability of the rotation of the rotating cylinder 1.

[0044] Example 3:

[0045] Refer to together Figure 8 , Figure 8 This is a flowchart of the test method for the locking setting parameters in Embodiment 3. The test method for the locking setting parameters in this embodiment uses the test device for the locking setting parameters in Embodiment 1. The test method for the locking setting parameters in this embodiment includes:

[0046] S1: Preset tilt angle α and initial distance a, a = R + 2r. Where α is the tilt angle of the track groove 51, a is the distance between the bottom wall of the track groove 51 and the central axis of the rotating cylinder 1, R is the radius of the rotating cylinder 1, and r is the radius of the ball 2. In specific applications, the rotating cylinder 1 is assembled into the central hole of the test body 3. The distance test piece 4 is assembled into the threaded inner hole 31, the ball 2 is assembled into the track groove 51, and the tilt angle test piece 5 is assembled into the distance test piece 4. The tilt angle test piece 5 is rotated to adjust the tilt angle α of the track groove 51 to 45°. Of course, in other embodiments, it can also be adjusted to other angles. Because the track groove 51 has a certain tilt angle, the ball 2 rolls to the bottom of the track groove 51 under the action of gravity. As the rotation distance test piece 4 gradually approaches the rotating cylinder 1, the tilt angle test piece 5 and the ball 2 also approach the rotating cylinder 1 synchronously until the ball 2 makes slight contact with the surface of the rotating cylinder 1. At this time, the distance a = R + 2r between the bottom wall of the track groove 51 and the central axis of the rotating cylinder 1 is recorded. R and r can be measured by a ball diameter gauge before assembly. Record the reading Z1 of the scale line 422 of the distance test piece 4 and the reading Z3 of the scale line of the tilt angle test piece 5.

[0047] S2: Adjust the size of 'a' by decreasing it once, and perform a locking state test by adjusting α multiple times. In specific application, rotate the distance test piece 4 to decrease the size of 'a', so that the ball 2 is slightly pre-pressed onto the rotating cylinder 1. It should be noted that the decrease of 'a' should be as small as possible to avoid excessive pressure that could cause the ball 2 or the rotating cylinder 1 to be squeezed and deformed. Install the distance positioning ring 6 on the test body 3, and engage the positioning teeth 63 between the gear teeth 421 of the distance test piece 4 to fix the position of the distance test piece 4. At this time, the rotating cylinder 1 can be rotated forward to push the ball 2 to roll upward in the track groove 51, that is, to release the pre-pressed state. Then, rotate the tilt angle test piece 5 multiple times to adjust the size of 'α' and perform a locking state test. In short, after each decrease of the size of 'a', the size of 'α' is adjusted multiple times, and a locking state test is performed after each adjustment of the size of 'α'. At the same time, after each adjustment of 'α', the tilt angle positioning ring 7 must be installed on the test body 3 to ensure that the tilt angle test piece 5 no longer rotates, that is, the tilt angle of the track groove 51 does not change, before the locking state test begins. It should be noted that in this embodiment, the direction from the bottom to the top of the track groove 51 in the top view is defined as the positive direction, and the direction from the top to the bottom of the track groove 51 is defined as the negative direction.

[0048] In the locking state test, the rotating cylinder 1 is rotated in the forward direction with a rotational force of appropriate magnitude. The rotating cylinder 1 pushes the balls 2 to roll against gravity in the track groove 51, that is, to roll from the bottom of the track groove 51 toward the top. At this time, the distance between the balls 2 and the surface of the rotating cylinder 1 gradually increases, and the balls 2 and the rotating cylinder 1 tend to separate from mutual contact, that is, the frictional force of the balls 2 on the rotating cylinder 1, namely the locking force, gradually decreases. The forward rotation of the rotating cylinder 1 is not affected by the balls 2, there is no frictional force or very small frictional force between the balls 2 and the rotating cylinder 1, that is, the forward rotation of the rotating cylinder 1 is permitted. When the rotating cylinder 1 is continuously rotated in the reverse direction with the same rotational force, the balls 2 roll and descend in the track groove 51 under the action of gravity. And since at this time the distance a between the groove wall at the bottom of the track groove 51 and the central axis of the rotating cylinder 1 is less than R+2r, the balls 2 cannot fall to the very bottom of the track groove 51, so that they are pressed against the rotating cylinder 1. The reverse rotation of the rotating cylinder 1 pushes the balls 2 to have a tendency to continue descending, so that the balls 2 are further pressed between the rotating cylinder 1 and the track groove 51. The frictional force between the rotating cylinder 1 and the balls 2 gradually increases, so that the reverse rotation of the rotating cylinder 1 is locked. On the premise of keeping the magnitude of the rotational force unchanged, it is ensured that the balls 2, the rotating cylinder 1 and the track groove 51 will not be deformed by extrusion in the locking state. At this time, when the rotating cylinder 1 is rotated in the forward direction with the same rotational force, the rotating cylinder 1 pushes the balls 2 to rise so that the rotating cylinder 1 exits the locking state. In short, the locking state test is to test whether the forward rotation of the rotating cylinder 1 is permitted, test whether the reverse rotation of the rotating cylinder 1 is locked, and then test whether the forward rotation can easily exit the locking state.

[0049] S3: Adjust and reduce the magnitude of a for multiple times, reduce the magnitude of a once in each adjustment, perform multiple adjustments of α and locking state tests, until the optimal locking state is achieved during the locking state test. In specific application, before adjusting and reducing the magnitude of a by rotating the distance test piece 4, the distance positioning ring 6 needs to be disassembled from the test main body 3, and after the adjustment is completed, the distance positioning ring 6 is installed on the test main body 3, which is the same when adjusting α. Each adjustment can be performed according to the minimum scales of the first gear scale ring 42 and the second gear scale ring 53, so as to ensure that each adjustment amplitude is sufficiently small and improve the test accuracy. The optimal locking state is a state where the rotating cylinder 1 is locked when rotated in the reverse direction, and the rotating cylinder 1 exits the locking state when rotated in the forward direction. Specifically, on the premise of keeping the magnitude of the rotational force unchanged, it is simultaneously ensured that the balls 2, the rotating cylinder 1 and the track groove 51 will not be deformed by extrusion in the locking state, and the rotating cylinder 1 can easily exit the locking state when rotated in the forward direction with the rotational force, without jamming during exiting the locking state.

[0050] S4: If the locking state test after adjusting α is in the optimal locking state, record the values ​​of α and a. In specific applications, read the reading Z2 of the scale line 422 of the distance test piece 4 and the reading Z4 of the scale line of the tilt test piece 5 at this time. Calculate the number of teeth 421 of both the distance test piece 4 and the tilt test piece 5, which is Z. The lead of one thread of the threaded column 41 is P. (Using the formula...) The value of 'a' is calculated using the formula. The value of α is calculated, where Z1 is the reading of scale line 422 on distance test piece 4 at the initial distance, i.e., when a = R + 2r. Z2 is the reading of scale line 422 on distance test piece 4 after adjustment. Z3 is the reading of scale line on tilt test piece 5 before adjustment, i.e., the reading when track groove 51 is 45° in this embodiment. Of course, in other embodiments, the initial angle of track groove 51 is not limited to 45°. Z4 is the reading of scale line on tilt test piece 5 after adjustment. By setting the scale lines in this way, quantitative and high-precision adjustment can be achieved, improving the accuracy and precision of locking setting parameter testing.

[0051] S5: According to the formula The optimal locking wedge angle β is calculated. In practical applications, the optimal locking wedge angle β is the angle between the tangent plane between the bottom wall of the track groove 51 and the ball 2 and the tangent plane between the rotating cylinder 1 and the ball 2 under the optimal locking state. The formula is... Depend on It is derived.

[0052] Example 4:

[0053] Refer to together Figure 9 , Figure 9 This is a flowchart of the test method for locking setting parameters in Embodiment 4. The difference between the test method for locking setting parameters in this embodiment and Embodiment 3 is that multiple balls 2 are assembled in the track groove 51 in this embodiment, and the multiple balls 2 are arranged sequentially in the track groove 51 along the direction from the bottom to the top of the track groove 51. The test method for locking setting parameters in this embodiment performs step S11a in addition to setting the tilt angle α and the initial distance a in S1.

[0054] S11a: Preset friction coefficients f1 and f2, mass G, and number of balls n. In practical applications, f1 is the friction coefficient between the rotating cylinder 1 and the ball 2, f2 is the friction coefficient between the ball 2 and the track groove 51, G is the mass of a single ball 2, and n is the number of balls 2 in the track groove 51. The values ​​of f1 and f2 can be obtained from a manual or friction test based on the materials of the rotating cylinder 1, the ball 2, and the track groove 51. The mass G of a single ball 2 is obtained by weighing. By setting multiple balls 2 in the track groove 51, the locking force during locking tests can be directly increased.

[0055] The testing method for the locking setting parameters in this embodiment also includes steps S6a and S7a.

[0056] S6a: After testing to the optimal locking state, also according to the formula Calculate the normal force N exerted by the ball 2 at the bottom of the track groove 51 on the rotating cylinder 1 under the optimal locking state. In practical applications, as the distance between the track groove 51 and the surface of the rotating cylinder 1 gradually increases from the bottom to the top, in other words, only the ball 2 at the bottom of the track groove 51 is in contact with the rotating cylinder 1. The normal force N is the normal force exerted by the ball 2 at the bottom of the track groove 51 on the rotating cylinder 1. The remaining balls 2 increase the weight of the ball 2, thereby increasing the magnitude of the locking force during the locking state test. G·cos(α) is the component of the weight of a single ball 2 along the track direction of the track groove 51, f1·cosβ is the frictional force between the rotating cylinder 1 and the ball 2 under the optimal locking state, and f2·cosβ is the frictional force between the ball 2 and the track groove 51 under the optimal locking state.

[0057] S7a: The minimum locking torque M required for the rotating cylinder 1 to exit the locked state is calculated using the formula M = N·f1·R. Calculating the minimum locking torque M facilitates the determination of a suitable rotational force for rotating the rotating cylinder 1. Under this force, rotating the rotating cylinder 1 in the forward direction allows it to easily exit the locked state. Simultaneously, it avoids excessive contact between the rotating cylinder 1 and the ball bearing 2 due to excessive rotational force when rotating the rotating cylinder 1 in the reverse direction, which could lead to over-locking of the rotating cylinder 1 and damage to both the rotating cylinder 1 and the ball bearing 2. This ensures that rotating the rotating cylinder 1 in the forward direction again allows it to easily exit the locked state.

[0058] Example 5:

[0059] Refer to together Figure 10 , Figure 10 This is a flowchart of the test method for the locking setting parameters in Embodiment 5. The difference between the test method for the locking setting parameters in this embodiment and Embodiment 3 is that a ball bearing 2 and an elastic element are assembled in the track groove 51 in this embodiment. The elastic element is a spring, with one end connected to the top of the track groove 51 and the other end connected to the ball bearing 2. Under the elastic force of the elastic element, the ball bearing 2 is pushed to press against the bottom of the track groove 51. Specifically, the setting of the elastic element is equivalent to increasing the effect of the weight of the ball bearing 2, thereby increasing the normal force of the ball bearing 2 on the rotating cylinder 1, and thus increasing the locking force.

[0060] In this embodiment, the method for testing the locking setting parameters includes step S11b while simultaneously setting the tilt angle α and initial distance a in step S11.

[0061] S11b: Preset friction coefficients f1 and f2, mass G, and elastic thrust F. f1 is the friction coefficient between the rotating cylinder 1 and the ball 2, f2 is the friction coefficient between the ball 2 and the track groove 51, G is the mass of a single ball 2, and F is the elastic force of the elastic element. The values ​​of f1 and f2 can be obtained from a manual or friction test based on the materials of the rotating cylinder 1, ball 2, and track groove 51. The mass G of a single ball 2 is obtained by weighing. When the ball 2 is at the bottom of the track groove 51, the elastic force F of the elastic element in this state is measured by an elastic force test. Thus, by setting elastic elements with different elastic force strengths, the normal force of the ball 2 on the rotating cylinder 1 can be flexibly adjusted to suit different application scenarios.

[0062] The testing method for the locking setting parameters in this embodiment also includes steps S6b and S7b.

[0063] S6b: After testing to the optimal locking state, measure the elastic force F of the elastic element in the optimal locking state, and also according to the formula... Calculate the normal force N of ball 2 on rotating cylinder 1 under the optimal locking state. In practical applications, the normal force of ball 2 on rotating cylinder 1 is affected by the weight of ball 2 itself and the elastic force of the elastic element. The elastic force of the elastic element actually increases the normal force of ball 2 on rotating cylinder 1, thereby increasing the magnitude of the locking force during the locking state test. G·cos(α) is the component of the weight of a single ball 2 along the track direction of the track groove 51, f1·cosβ is the frictional force between rotating cylinder 1 and ball 2 under the optimal locking state, and f2·cosβ is the frictional force between ball 2 and track groove 51 under the optimal locking state.

[0064] S7b: The minimum locking torque M required for the rotating cylinder 1 to exit the locked state is calculated according to the formula M=N·f1·R.

[0065] Example 6:

[0066] Rereference Figure 1-10 The difference between the locking setting parameter testing method in this embodiment and that in embodiment three is that the locking setting parameter testing method in this embodiment further includes the following sub-steps when performing the locking state test in step S3:

[0067] S31: Use a torque tester to rotate the rotating cylinder. In specific applications, the torque tester in this embodiment is a torque wrench. By setting the torque tester, the rotational force required for the rotating cylinder 1 to rotate can be directly obtained by rotating the rotating cylinder 1 with the torque tester. This makes it easier and more intuitive to obtain the value of the rotational force, improving the convenience of the test. At the same time, it can be verified and compared with the minimum locking torque M obtained by testing in Embodiment 4 or Embodiment 5, improving the accuracy of the test.

[0068] S32: Determine whether the current locking state is in the optimal locking state. If so, read the minimum locking torque M required for the torque test piece to rotate the rotating cylinder 1 to exit the locking state.

[0069] Example 7:

[0070] Rereference Figure 1-10 In this embodiment, the assembly method uses the locking setting parameter testing method in Embodiment 3 to obtain assembly data for assembling the ball cylindrical surface locking mechanism. The ball cylindrical surface locking mechanism assembled in this embodiment includes a rotating cylinder 1 and a locking body 8. The locking body 8 has a central hole, and the rotating cylinder 1 is rotatably disposed within the central hole. A track groove 51 is formed in the locking body 8, and the ball 2 is accommodated within the track groove 51. The assembly method in this embodiment includes the following steps:

[0071] Step 1: Select a rotating cylinder 1, ball bearing 2, and track groove 51 that are compatible with those used in Example 3. This ensures that the optimal locking state tested in Example 3 can be accurately reproduced when assembling the ball bearing cylindrical locking mechanism, that is, the coefficient of friction between the locking body 8 and the ball bearing 2 is f2.

[0072] Step 2: Obtain assembly data a, α, and β according to the test method for locking setting parameters in Example 3.

[0073] Step 3: Assemble the ball-bearing cylindrical locking mechanism using assembly data a, α, and β. In specific applications, the distance between the bottom wall of the track groove 51 and the central axis of the rotating cylinder 1 is 'a'. Specifically, since the ball-bearing cylindrical locking mechanism to be assembled has the ball 2 located at the bottom of the track groove 51 in the optimal locking state, i.e., in contact with the bottom of the track groove 51, unlike the cases in embodiments three, four, and five, where the ball 2 has a certain gap space with the bottom of the track groove 51 in the optimal locking state, the value of 'a' during assembly is R+2r. α represents the inclination angle of the track groove 51, which is the complementary angle between the track groove 51 and the central axis of the rotating cylinder 1, and also the angle at which the track groove 51 is opened in the locking body 8. β is the angle between the tangent plane of the bottom wall of the track groove 51 and the ball 2 and the tangent plane of the rotating cylinder 1 and the ball 2. Specifically, the track groove 51 is a groove with gradually changing depth. Along the direction from the top to the bottom of the track groove 51, the depth of the track groove 51 gradually decreases. The groove wall of the track groove 51 can be a plane or a curved surface. This embodiment does not limit it. It should be noted that when the ball 2 is at the bottom of the track groove 51, the ball 2 is exactly tangent to the rotating cylinder 1, and the depth of the track groove 51 still tends to continue to decrease. When the rotating cylinder 1 rotates in the opposite direction, the rotating cylinder 1 pushes the ball 2 with a tendency to continue to descend, while the ball 2 is blocked by the bottom of the track groove 51. At the same time, the groove wall of the track groove 51 tends to gradually tilt with an angle of β, causing the ball 2 to lock the reverse rotation of the rotating cylinder 1.

[0074] Example 8:

[0075] Rereference Figure 1-10 In this embodiment, the assembly method uses the locking setting parameter testing method in Embodiment 4 to obtain assembly data for assembling the ball cylindrical locking mechanism. The ball cylindrical locking mechanism assembled in this embodiment includes a rotating cylinder 1 and a locking body 8. The locking body 8 has a central hole, and the rotating cylinder 1 is rotatably disposed within the central hole. A track groove 51 is formed in the locking body 8. In this embodiment, there are multiple balls 2, all of which are accommodated within the track groove 51. (See also...) Figure 11 and Figure 12 , Figure 11 This is a schematic diagram of the ball-bearing cylindrical locking mechanism assembled by the assembly method in Example 8. Figure 12 This is a schematic diagram of another ball-bearing cylindrical locking mechanism assembled using the assembly method in Embodiment 8. In short, this embodiment can be assembled as follows: Figure 11 The structure shown, in which the track groove 51 is set as a separate component and then assembled into the locking body 8, can also be assembled as follows: Figure 12The track groove 51 shown is an integrally formed structure directly formed within the locking body 8. The assembly method in this embodiment includes the following steps:

[0076] Step 1: Select a rotating cylinder 1, ball bearing 2, and track groove 51 that are compatible with those used in Example 4. This ensures that the optimal locking state tested in Example 3 can be accurately reproduced when assembling the ball bearing cylindrical locking mechanism, that is, the coefficient of friction between the locking body 8 and the ball bearing 2 is f2.

[0077] Step 2: Obtain assembly data a, α, β, and M according to the test method for locking setting parameters in Example 4.

[0078] Step 3: Assemble the ball-bearing cylindrical locking mechanism using assembly data a, α, β, and M. In specific applications, the distance between the bottom wall of the track groove 51 and the central axis of the rotating cylinder 1 is 'a'. Specifically, since the ball-bearing cylindrical locking mechanism to be assembled has the ball 2 located at the bottom of the track groove 51 in its optimal locking state, i.e., in contact with the bottom of the track groove 51, unlike the cases in embodiments three, four, and five, where the ball 2 has a certain gap space with the bottom of the track groove 51 in its optimal locking state, the value of 'a' during assembly is R + 2r. α represents the inclination angle of the track groove 51, which is the complementary angle between the track groove 51 and the central axis of the rotating cylinder 1, and also the angle at which the track groove 51 is opened in the locking body 8. β is the angle between the tangent plane of the bottom wall of the track groove 51 and the ball 2 and the tangent plane of the rotating cylinder 1 and the ball 2. Specifically, the track groove 51 is a groove with gradually changing depth. Along the direction from the top to the bottom of the track groove 51, the depth of the track groove 51 gradually decreases. The groove wall of the track groove 51 can be a plane or a curved surface. This embodiment does not limit it. It should be noted that when the ball 2 is at the bottom of the track groove 51, the ball 2 is exactly tangent to the rotating cylinder 1, and the depth of the track groove 51 still tends to continue to decrease. When the rotating cylinder 1 rotates in the opposite direction, the rotating cylinder 1 pushes the ball 2 with a tendency to continue to descend, while the ball 2 is blocked by the bottom of the track groove 51. At the same time, the groove wall of the track groove 51 tends to gradually tilt with an angle of β, causing the ball 2 to lock the reverse rotation of the rotating cylinder 1. M represents the minimum locking torque required for the rotating cylinder 1 to exit the locked state. During actual assembly, it is sufficient to ensure that the rotational driving force of the rotating cylinder 1 is slightly greater than M. This ensures that when the rotating cylinder 1 is rotated in the reverse direction, it achieves locking in the reverse rotation while ensuring that the rotational force is not too large, which would cause excessive wear or deformation of the rotating cylinder 1 and the ball bearing 2, thus improving the service life of the product. In addition, it ensures that the reverse rotation will not lead to over-locking, and ensures that the rotating cylinder 1 can easily exit the locked state when rotating in the forward direction without jamming. It also saves energy consumption and cost of setting up a high-power rotational drive component.

[0079] Example 9:

[0080] Rereference Figure 1-10 In this embodiment, the assembly method uses the locking setting parameter testing method in Embodiment 5 to obtain assembly data for assembling the ball cylindrical locking mechanism. The ball cylindrical locking mechanism assembled in this embodiment includes a rotating cylinder 1, a ball 2, a locking body 8, and an elastic element. The locking body 8 has a central hole, and the rotating cylinder 1 is rotatably disposed within the central hole. A track groove 51 is formed in the locking body 8, and the ball 2 and the elastic element are both accommodated within the track groove 51. One end of the elastic element is connected to the top of the track groove 51, and the other end is connected to the ball 2. The assembly method in this embodiment includes the following steps:

[0081] Step 1: Select the rotating cylinder 1, ball bearing 2, track groove 51, and elastic element that are compatible with those used in Example 5. This ensures that the optimal locking state tested in Example 3 can be accurately reproduced when assembling the ball bearing cylindrical locking mechanism, that is, the coefficient of friction between the locking body 8 and the ball bearing 2 is f2.

[0082] Step 2: Obtain assembly data a, α, β, and M according to the test method for locking setting parameters in Example 5.

[0083] Step 3: Assemble the ball-bearing cylindrical locking mechanism using assembly data a, α, β, and M. In specific applications, the distance between the bottom wall of the track groove 51 and the central axis of the rotating cylinder 1 is 'a'. Specifically, since the ball-bearing cylindrical locking mechanism to be assembled has the ball 2 located at the bottom of the track groove 51 in its optimal locking state, i.e., in contact with the bottom of the track groove 51, unlike the cases in embodiments three, four, and five, where the ball 2 has a certain gap space with the bottom of the track groove 51 in its optimal locking state, the value of 'a' during assembly is R + 2r. α represents the inclination angle of the track groove 51, which is the complementary angle between the track groove 51 and the central axis of the rotating cylinder 1, and also the angle at which the track groove 51 is opened in the locking body 8. β is the angle between the tangent plane of the bottom wall of the track groove 51 and the ball 2 and the tangent plane of the rotating cylinder 1 and the ball 2. Specifically, the track groove 51 is a groove with gradually changing depth. Along the direction from the top to the bottom of the track groove 51, the depth of the track groove 51 gradually decreases. The groove wall of the track groove 51 can be a plane or a curved surface. This embodiment does not limit it. It should be noted that when the ball 2 is at the bottom of the track groove 51, the ball 2 is exactly tangent to the rotating cylinder 1, and the depth of the track groove 51 still tends to continue to decrease. When the rotating cylinder 1 rotates in the opposite direction, the rotating cylinder 1 pushes the ball 2 with a tendency to continue to descend, while the ball 2 is blocked by the bottom of the track groove 51. At the same time, the groove wall of the track groove 51 tends to gradually tilt with an angle of β, causing the ball 2 to lock the reverse rotation of the rotating cylinder 1. M represents the minimum locking torque required for the rotating cylinder 1 to exit the locked state. During assembly, the rotational driving force of the rotating cylinder 1 should be slightly greater than M. This ensures that while reverse rotation of the rotating cylinder 1 achieves locking, it also prevents excessive rotational force that could cause excessive wear or deformation of the rotating cylinder 1 and the ball bearing 2, thus extending the product's lifespan. Furthermore, it ensures that reverse rotation does not lead to over-locking, allowing the rotating cylinder 1 to easily exit the locked state without jamming, and also saves energy and cost compared to high-power rotational drive components. The use of elastic elements directly increases the locking force of the ball bearing 2 on the rotating cylinder 1 in this embodiment. When a larger locking force is required, the limited mass of the ball bearing 2 can be overcome by using elastic elements with different elastic forces. In this embodiment, an elastic element with a suitable elastic force can be selected for assembly based on actual conditions, broadening the application scenarios of the ball bearing cylindrical locking mechanism assembled in this embodiment.

[0084] In summary, this application allows for the replacement of rotating cylinders and balls with different materials, dimensional tolerances, and surface finishes. It enables precise and quantitative adjustment of the locking wedge angle and contact surface normal pressure. A single testing device or method can complete a large number of orthogonal tests under the coupled effects of multiple factors, providing accurate design parameters for the design of ball-locking mechanisms on outer cylindrical surfaces. At the same time, the testing device has a simple structure, is easy to operate, and has low manufacturing costs.

[0085] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A method for testing locking setting parameters, characterized in that, A testing device for locking setting parameters, comprising a testing body (3), a distance testing piece (4), and an inclination testing piece (5), wherein the testing body (3) is rotatably sleeved on the outside of a rotating cylinder (1) along the radial direction of the rotating cylinder (1), and the distance testing piece (4) is movably inserted through the side wall of the testing body (3); the inclination testing piece (5) is rotatably inserted through the distance testing piece (4), and a track groove (51) is provided at one end of the inclination testing piece (5) near the rotating cylinder (1), and a ball bearing (2) is rolled in the track groove (51). The testing method for the locking setting parameters includes the following steps: The preset tilt angle α and initial distance a are given, where a = R + 2r; where α is the tilt angle of the track groove (51), a is the distance between the bottom wall of the track groove (51) and the central axis of the rotating cylinder (1), R is the radius of the rotating cylinder (1), and r is the radius of the ball (2). Adjust the size of 'a' by decreasing it once, and then adjust 'α' multiple times to test the locked state. If the locking state test after adjusting α is in the optimal locking state, then record the values ​​of α and a; wherein the optimal locking state is the state of locking by rotating the rotating cylinder (1) in the reverse direction and exiting the locking state by rotating the rotating cylinder (1) in the forward direction. According to the formula The optimal locking wedge angle β is calculated. The optimal locking wedge angle β is the angle between the tangent plane of the bottom wall of the track groove (51) and the ball (2) and the tangent plane of the rotating cylinder (1) and the ball (2) under the optimal locking state.

2. The test method for locking setting parameters according to claim 1, characterized in that, It also includes the following steps: While setting the tilt angle α and the initial distance a, the friction coefficient f1, friction coefficient f2, mass G and number of balls n are also preset; where f1 is the friction coefficient between the rotating cylinder (1) and the balls (2), f2 is the friction coefficient between the balls (2) and the track groove (51), G is the mass of a single ball (2), and n is the number of balls (2) in the track groove (51); After the test is in the optimal locking state, it is also based on the formula. Calculate the normal force N exerted by the ball (2) at the bottom of the track groove (51) on the rotating cylinder (1) under the optimal locking state; According to the formula The minimum locking torque M required for the rotating cylinder (1) to exit the locked state is calculated.

3. The test method for locking setting parameters according to claim 1, characterized in that, It also includes the following steps: While setting the tilt angle α and the initial distance a, the friction coefficient f1, friction coefficient f2, mass G and elastic thrust F are also preset; where f1 is the friction coefficient between the rotating cylinder (1) and the ball (2), f2 is the friction coefficient between the ball (2) and the track groove (51), G is the mass of a single ball (2), and F is the elastic force of the elastic element; After the test is completed in the optimal locking state, the elastic force F of the elastic element in the optimal locking state is measured, and the result is also calculated according to the formula. Calculate the normal force N exerted by the ball (2) on the rotating cylinder (1) under the optimal locking state; According to the formula The minimum locking torque M required for the rotating cylinder (1) to exit the locked state is calculated.

4. The test method for locking setting parameters according to claim 1, characterized in that, The locking state test includes: The rotating cylinder (1) is rotated using a torque test piece; Determine whether the current locking state is in the optimal locking state. If so, read the minimum locking torque M required for the torque test piece to rotate the rotating cylinder (1) to exit the locking state.

5. An assembly method, characterized in that, include: Select a rotating cylinder (1), ball (2) and track groove (51) that are compatible with the test method for the locking setting parameters as described in claim 1; The test method for locking setting parameters according to claim 1 obtains assembly data a, α, and β; Product assembly is performed using assembly data a, α, and β.

6. An assembly method, characterized in that, include: Select a rotating cylinder (1), ball (2) and track groove (51) that are compatible with the test method for the locking setting parameters described in claim 2; The test method for locking setting parameters according to claim 2 obtains assembly data a, α, β, and M; Product assembly is performed using assembly data a, α, β, and M.

7. An assembly method, characterized in that, include: Select a rotating cylinder (1), ball (2), track groove (51) and elastic element that are compatible with the test method for the locking setting parameters described in claim 3; The test method for locking setting parameters according to claim 3 obtains assembly data a, α, β, F, and M; Product assembly is performed using assembly data a, α, β, F, and M.

8. A testing device for locking setting parameters, characterized in that, The test method for the locking setting parameters according to any one of claims 1-4 is executed; along the direction from the bottom of the track groove (51) to the top of the track groove (51), the distance between the groove wall of the track groove (51) and the rotating cylinder (1) gradually increases; When adjusting the size of 'a' once and adjusting 'α' multiple times to perform the locking state test step, the size of 'a' is reduced by adjusting the distance test piece (4), and the size of 'α' is adjusted by adjusting the tilt test piece (5).

9. The testing device for locking setting parameters according to claim 8, characterized in that, The distance test piece (4) includes a threaded post (41) and a first gear scale ring (42) located at one end of the threaded post (41). The test body (3) has a threaded inner hole (31) on its side wall. The other end of the threaded post (41) is screwed into the threaded inner hole (31). The first gear scale ring (42) has a plurality of gear teeth (421) arranged in sequence at intervals. A scale line (422) is provided between any two adjacent gear teeth (421). The tilt angle test piece (5) is rotatably inserted into the threaded post (41). The steps for testing the locked state by adjusting and decreasing the value of 'a' once and adjusting 'α' multiple times include the following sub-steps: Read the reading Z1 of the scale line (422) when a=R+2r; After rotating the threaded column (41) to reduce the size of a, read the reading Z2 of the scale line (422), where the number of teeth (421) is Z, and the lead of one thread of the threaded column (41) is P; Through formula The value of 'a' is calculated. The locking state was tested by adjusting α multiple times.

10. The testing device for locking setting parameters according to claim 9, characterized in that, The distance test piece (4) also includes a distance positioning ring (6), which is detachably installed on the test body (3). The positioning end of the distance positioning ring (6) is snapped and fixed between two adjacent gear teeth (421). Before performing the locking state test step by adjusting α multiple times, the distance positioning ring (6) is installed on the test body (3) and locked in place with the first gear scale ring (42).

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