Stabilizer bar ball pin swing angle checking method, system and equipment and storage medium thereof

Abstract

The invention discloses a stabilizer bar ball pin swing angle checking method, system and device and a storage medium thereof, and relates to the field of vehicle suspension detection, a simulation model of a Macpherson suspension is established, auxiliary checking marks are arranged at a first ball pin and a second ball pin, and the simulation model is adjusted to different to-be-checked states. A movable end ball pin and a detection end ball pin are selected between the first ball pin and the second ball pin, the movable end ball pin is made to be at the allowable maximum swing angle by adjusting the suspender body, the movable end ball pin is made to be in the swing angle exhaustion state, and then the ball pin swing angle of the measuring end is obtained based on the auxiliary verification mark. By setting the simulation model, the ball pin swing angle can be conveniently measured before the entity Macpherson suspension is manufactured, the reliability of the entity Macpherson suspension is improved, and the problems that in the prior art, when a model is established in three-dimensional software for measurement, the ball pin swing angle serving as a space swing angle is difficult to directly measure, and the measurement efficiency is low are solved.

Description

Technical Field

[0001] The present invention relates to the field of vehicle suspension detection, and in particular to a stabilizer bar ball pin swing angle calibration method, system, equipment and storage medium thereof. Background Art

[0002] As one of the most widely used suspension types in modern automobiles, the McPherson strut's structural design directly impacts the vehicle's handling stability and driving safety. A typical McPherson strut consists of core components such as the strut body, front axle unit, lower control arm, stabilizer bar body, and suspension arm body.

[0003] Specifically, refer to Figure 1 The McPherson suspension primarily consists of a strut body 1, a front axle unit 2, a lower control arm 3, a stabilizer bar body 4, and a boom body 5. The strut body 1 is connected to the vehicle body via a tower 12. The front axle unit 2 and strut body 1 are assembled as a single unit and can move with the strut body 1. The lower control arm 3 is hinged to the front axle unit 2 via a swing arm ball pin 31. The boom body 5 is hinged to the strut body 1 and stabilizer bar body 4 via ball sockets and ball pins at its ends. The upper portion of the boom body 5 is hinged to the strut body 1 via a first ball pin 53, and the lower portion of the boom body 5 is connected to the stabilizer bar body 4 via a second ball pin 57. The stabilizer bar body 4 can rotate slightly about its axis 41. The line connecting the hinge point of the tower 12 and the swing arm ball pin 31 is the kingpin line 13. The first ball pin 53 and the second ball pin 57, which pivotally connect the strut body 1 and stabilizer bar body 4 at either end of the boom body 5, are both referred to as stabilizer bar ball pins.

[0004] When the suspension bounces, the front axle unit 2 and the lower half of the strut body 1 can extend and retract along the strut axis 11, and at the same time swing slightly around the tower top 12, thereby driving the lower control arm 3 to swing up and down around the control arm rotation axis 32; when the strut body 1 moves, the stabilizer bar body 4 is pulled by the boom body 5 to swing around the stabilizer bar axis 41; when steering occurs, the front axle unit 2 and the lower half of the strut body 1 can rotate around the kingpin line 13, and at the same time drive the boom body 5 and the first boom ball seat 52 fixed thereto to swing, at this time, the first ball pin 53 hinged to the first boom ball seat 52 will also swing, and the angle between the axis of the first boom ball seat 52 and the axis of the first ball pin 53 is called the ball pin swing angle.

[0005] During suspension bouncing and steering, the ball pin's swing angle changes dynamically with the state of motion. If the ball pin's swing angle exceeds the design's allowable range, it can cause failures such as stuck, dislodged, or jammed joints, seriously impacting suspension reliability. Therefore, verifying that the ball pin's swing angle meets design requirements before actual suspension production is a critical step in suspension development. However, when building models within 3D software for measurement, the ball pin's swing angle, as a spatial angle, is difficult to measure directly, significantly inconvenient for verification personnel and resulting in low measurement efficiency. Summary of the Invention

[0006] The present application provides a method for calibrating the swing angle of a stabilizer bar ball pin, which can solve the technical problem in the prior art that when a model is established in three-dimensional software for measurement, the swing angle of the ball pin is difficult to directly measure as a spatial swing angle, resulting in low measurement efficiency.

[0007] In a first aspect, an embodiment of the present application provides a method for calibrating a stabilizing bar ball pin swing angle, comprising:

[0008] A simulation model of a McPherson suspension is established, the simulation model being in a state to be verified and comprising a boom body, a sliding column side mounting structure connected to one end of the boom body, and a stabilizer bar side mounting structure connected to the other end of the boom body, wherein a first boom ball seat is fixed to one end of the boom body, a first ball pin is hingedly provided on the first boom ball seat, and the first ball pin is fixed to the sliding column side mounting structure; a second boom ball seat is fixed to the other end of the boom body, a second ball pin is hingedly provided on the second boom ball seat, and the second ball pin is fixed to the stabilizer bar side mounting structure;

[0009] Establishing auxiliary verification marks at the first ball pin and the second ball pin;

[0010] Selecting any one of the first ball pin and the second ball pin as the moving end ball pin, and the other ball pin as the calibration end ball pin;

[0011] Adjusting the boom body so that the moving end ball pin is at its maximum allowable swing angle based on the auxiliary calibration mark of the moving end ball pin, and measuring the ball pin swing angle of the calibration end ball pin based on the auxiliary calibration mark of the calibration end ball pin, which is the swing angle margin of the McPherson suspension;

[0012] Repeat the above steps until the swing angle margin measurement of the McPherson suspension in each state to be verified is completed.

[0013] In combination with the first aspect, in one embodiment, establishing auxiliary verification marks at the first ball pin and the second ball pin includes:

[0014] An auxiliary calibration axis is created coaxially along the first ball stud and the second ball stud.

[0015] In combination with the first aspect, in one embodiment, establishing auxiliary verification marks at the first ball pin and the second ball pin further includes:

[0016] Creating a swing angle conical surface around the center line of the first boom ball seat, wherein the cone angle of the swing angle conical surface is equal to the maximum allowable swing angle of the first ball pin;

[0017] A swing angle conical surface is created around the center line of the second boom ball seat, and the cone angle of the swing angle conical surface is equal to the maximum allowable swing angle of the second ball pin.

[0018] In combination with the first aspect, in one embodiment, adjusting the boom body based on the auxiliary verification mark of the movable end ball pin so that the movable end ball pin is at its maximum allowable swing angle specifically includes:

[0019] The boom body is driven to rotate around its boom axis so that the auxiliary calibration axis of the movable end ball pin is attached to its corresponding swing angle conical surface.

[0020] In combination with the first aspect, in one embodiment, adjusting the boom body based on the auxiliary verification mark of the movable end ball pin so that the movable end ball pin is at its maximum allowable swing angle further includes:

[0021] Observe whether the auxiliary calibration axis of the calibration end ball pin is located within the corresponding swing angle conical surface:

[0022] If the auxiliary calibration axis of the calibration end ball pin is located within the corresponding swing angle cone surface, then measuring the ball pin swing angle of the calibration end ball pin at this time;

[0023] If the auxiliary calibration axis of the calibration end ball pin is located outside the corresponding swing angle conical surface or is attached to the swing angle conical surface, the simulation model of the McPherson suspension is redesigned.

[0024] In combination with the first aspect, in one embodiment, if the auxiliary calibration axis of the calibration end ball pin is located within the corresponding swing angle conical surface, measuring the ball pin swing angle of the calibration end ball pin at this time specifically includes:

[0025] A first measuring plane is formed by passing through the boom axis and the auxiliary calibration axis at the calibration end ball pin;

[0026] A second measuring plane perpendicular to the first measuring plane is formed through the auxiliary calibration axis at the calibration end ball pin, and a first intersection line and a second intersection line exist between the second measuring plane and the swing angle cone surface at the calibration end ball pin;

[0027] The gradually decreasing angle between the auxiliary calibration axis at the calibration end ball pin and the first intersection line and the second intersection line on the second measuring plane is the ball pin swing angle margin of the calibration end ball pin.

[0028] In combination with the first aspect, in one embodiment, the auxiliary verification axis is set to a cylindrical surface with a radius less than or equal to 0.00001 mm.

[0029] In a second aspect, an embodiment of the present application provides a stabilizer bar ball pin swing angle calibration system, comprising:

[0030] A first module is configured to establish a simulation model of a McPherson suspension, the simulation model being in a state to be verified and comprising a boom body, a sliding column side mounting structure connected to one end of the boom body, and a stabilizer bar side mounting structure connected to the other end of the boom body, wherein a first boom ball seat is fixed to one end of the boom body, a first ball pin is hingedly provided on the first boom ball seat, and the first ball pin is fixed to the sliding column side mounting structure; a second boom ball seat is fixed to the other end of the boom body, a second ball pin is hingedly provided on the second boom ball seat, and the second ball pin is fixed to the stabilizer bar side mounting structure;

[0031] The second module is used to: establish auxiliary calibration marks and auxiliary calibration axes at the first ball pin and the second ball pin;

[0032] The third module is used to select one end of the first ball pin and the second ball pin as the moving end ball pin and the other end as the calibration end ball pin to assist in calibrating the axis;

[0033] A fourth module is configured to adjust the boom body so that the movable end ball pin is at its maximum allowable swing angle based on the auxiliary calibration mark on the movable end ball pin, and measure the ball pin swing angle of the calibration end ball pin based on the auxiliary calibration mark on the calibration end ball pin, which is the swing angle margin of the McPherson suspension.

[0034] The fifth module is used to repeat the above steps until the swing angle margin measurement of the McPherson suspension in each state to be verified is completed.

[0035] In a third aspect, an embodiment of the present application provides a storage medium storing a computer program: when the computer program is executed by a processor, the method for calibrating the swing angle of a stabilizer bar ball pin as described in any one of claims 1 to 7 is implemented.

[0036] In a fourth aspect, an embodiment of the present application provides an electronic device comprising a memory and a processor, wherein the memory stores a computer program running on the processor: when the processor executes the computer program, the stabilizer bar ball pin swing angle calibration method described in any one of claims 1 to 7 is implemented.

[0037] The beneficial effects of the technical solutions provided in the embodiments of the present application include:

[0038] By establishing a simulation model of the McPherson suspension, auxiliary calibration marks are set at both the first and second ball pins, and the simulation model is adjusted to different states to be verified. A movable end ball pin and a detection end ball pin are selected between the first and second ball pins, and the suspension rod body is adjusted so that the movable end ball pin is at its maximum allowable swing angle, so that the movable end ball pin is in a state where the swing angle is exhausted. The ball pin swing angle at the measuring end is then obtained based on the auxiliary calibration marks. The ball pin swing angle at the measuring end is obtained quickly, simply, and directly, and the swing angle margin of the McPherson suspension is then obtained. By setting up the simulation model, it is convenient to measure the ball pin swing angle before manufacturing the physical McPherson suspension, thereby improving the reliability of the physical McPherson suspension and solving the problem in the prior art that the ball pin swing angle is difficult to directly measure as a spatial swing angle when building a model in three-dimensional software for measurement, resulting in low measurement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0040] Figure 1 A schematic diagram of the structure of the McPherson suspension in the background technology of this application;

[0041] Figure 2 A schematic diagram of establishing the auxiliary calibration axis and the swing angle cone surface in this application;

[0042] Figure 3 This is a schematic diagram of measuring the swing angle of the ball pin of the calibration end in this application;

[0043] Figure 4 Schematic diagram of applying angle constraints to obtain the ball pin swing angle for this application;

[0044] In the figure: 1. Sliding rod body; 11. Sliding rod axis; 12. Tower top; 13. Kingpin line; 2. Front axle unit; 3. Lower control arm; 31. Control arm ball; 32. Control arm rotation axis; 4. Stabilizer bar body; 41. Stabilizer bar axis; 5. Boom body; 51. Boom axis; 52. First boom ball seat; 53. First ball pin; 54. Swing angle cone surface; 55. Auxiliary calibration axis; 56. Second boom ball seat; 57. Second ball pin; 58. First measuring plane; 59. Second measuring plane; 591. First intersection line; 592. Second intersection line. DETAILED DESCRIPTION

[0045] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0046] An embodiment of the present application provides a method for calibrating the swing angle of a stabilizer bar ball pin, which can solve the problem that when a model is established in three-dimensional software for measurement, the swing angle of the ball pin is difficult to measure directly as a spatial swing angle, resulting in low measurement efficiency.

[0047] The present application discloses a method for calibrating the swing angle of a stabilizer bar ball pin, comprising the following steps:

[0048] S1: Establish a simulation model of the McPherson suspension, which is in a state to be verified;

[0049] Reference Figure 1 A McPherson suspension simulation model was established within the 3D software. Specifically, the McPherson suspension simulation model includes a boom body 5, a strut-side mounting structure connected to one longitudinal end of the boom body 5, and a stabilizer-side mounting structure connected to the other longitudinal end of the boom body 5. A first boom ball socket 52 is fixed to one longitudinal end of the boom body 5. A first ball pin 53 is hingedly mounted on the first boom ball socket 52. The other end of the first ball pin 53 is fixed to the strut body 1, enabling a rotational connection between the boom body 5 and the strut body 1. A second boom ball socket 56 is fixed to the other longitudinal end of the boom body 5. A second ball pin 57 is hingedly mounted on the second boom ball socket 56. The other end of the second ball pin 57 is fixed to the stabilizer bar body 4 near the strut body 1, enabling a rotational connection between the boom body 5 and the stabilizer bar body 4. In the vehicle suspension structure, both the first and second ball pins 53, 57 are considered stabilizer bar ball pins.

[0050] The strut-side mounting structure includes a strut body 1, a front axle unit 2, a tower 12, and a lower control arm 3. The front axle unit 2 is fixed to the bottom of the strut body 1. The tower 12 is movably mounted at the top of the strut body 1 and connected to the vehicle body, allowing the strut body 1 to extend and retract along the length of the strut axis 11 and slightly swing about the hinge point of the tower 12. When the vehicle body bounces, the strut body 1 and the front axle unit 2 can move synchronously along the length of the strut axis 11. The lower control arm 3 is hinged to the end of the front axle unit 2 away from the strut body 1 via a swing arm ball 31. As the strut body 1 and the front axle unit 2 move up and down, the lower control arm 3 can move up and down about the swing arm axis. The stabilizer bar mounting structure includes a stabilizer bar body 4, which is pivotally mounted on the end of the lower control arm 3 away from the strut body 1. When the vehicle body bounces, the boom body 5 moves up and down with the strut body 1, driving the stabilizer bar body 4 to rotate along the stabilizer bar axis 41.

[0051] Therefore, when the vehicle body bounces, the overall motion trajectory of the McPherson suspension is as follows: the strut body 1 and the front axle unit 2 move along the length of the strut axis 11. At this time, the lower control arm 3 swings up and down along the control arm axis. The strut body 1 drives the stabilizer bar body 4 to rotate along the stabilizer bar axis 41 through the suspension rod body 5. Simultaneously, the swing angles of the first and second ball pins 53 and 57 change dynamically accordingly.

[0052] The line connecting the hinge point of the tower top 12 and the center point of the pin of the swing arm ball 31 is the kingpin line 13. When the vehicle body turns, the lower half of the integral connection between the sliding column body 1 and the front axle unit 2 can rotate around the kingpin line 13, thereby driving the swing of the suspension rod body 5 on the sliding column body 1, so that the ball pin swing angle changes dynamically.

[0053] Since the purpose of establishing the McPherson suspension to be tested in the three-dimensional software is to simulate the possible situations of the vehicle suspension under the actual vehicle body motion state, and in the actual suspension motion, there are countless situations of the ball pin swing angle. In order to reduce the workload during the actual measurement and measure the maximum possible range of the ball pin swing angle, only a few possible extreme situations are checked during the simulation process. Therefore, when simulating the state of the McPherson suspension, in addition to the extreme state of the sliding column body 1 jumping up and down, it is also necessary to examine the state when the lower arm 3 is horizontal, the state when the stabilizer bar body 4 is horizontal, and the state when the lower arm 3 is perpendicular to the kingpin line 13, and the state when the stabilizer bar body 4 is perpendicular to the boom body 5. In one embodiment of the present application, a total of 12 different extreme states are included to better simulate the operating state of the McPherson suspension during actual vehicle driving:

[0054]

[0055]

[0056] S2: Establish auxiliary verification marks at the first ball pin 53 and the second ball pin 57;

[0057] S201 : Create an auxiliary calibration axis 55 coaxially along the first ball pin 53 and the second ball pin 57 .

[0058] Since the spatial angle is difficult to observe in the three-dimensional software, it is necessary to establish an auxiliary calibration axis to assist the operator to measure the ball pin swing angle more intuitively. In the embodiment of the present application, Figure 2 and Figure 3 The auxiliary verification mark includes an auxiliary verification axis 55, wherein the auxiliary verification axis 55 is the axis of the ball pin. The auxiliary verification axis 55 can be a guide line. Since the points and lines directly established in the three-dimensional software cannot be blocked by the sheet or entity, it is difficult to observe the angle. Therefore, when establishing the auxiliary verification axis 55, it can be established as a slender cylindrical surface or cylinder with an extremely small radius, that is, a radius less than or equal to 0.00001mm. In other embodiments, the radius of the slender cylindrical surface can also be set to other specifications. The main purpose is to make the slender cylindrical surface approximate an axis to facilitate observation by the operator.

[0059] S202: Create a swing angle conical surface 54 around the center line of the first boom ball seat 52, and the cone angle of the swing angle conical surface 54 is equal to the maximum allowable swing angle of the first ball pin 53; create a swing angle conical surface 54 around the center line of the second boom ball seat 56, and the cone angle of the swing angle conical surface 54 is equal to the maximum allowable swing angle of the second ball pin 57.

[0060] In order to further facilitate the observation of test personnel, refer to Figure 2 and Figure 3 The auxiliary calibration mark also includes a swing angle conical surface 54. A swing angle conical surface 54 can be created along the centerline of each of the first and second boom ball seats 52, 56. The cone angles of the swing angle conical surfaces 54 at the first and second boom ball seats 52, 56 are equal to the maximum allowable swing angles of the first and second ball pins 53, 57, respectively. Because the elongated cylindrical surface of the auxiliary calibration axis 55 is a 3D element, it can be obscured by the swing angle conical surfaces 54, also 3D elements, making it easier for the calibration personnel to observe the spatial angle at that time.

[0061] S3: Select one end of the first ball pin 53 and the second ball pin 57 as the moving end ball pin, and the other end as the calibration end ball pin.

[0062] For example, when measuring the ball pin swing angle of the second ball pin 57, the first ball pin 53 is the moving end ball pin and the second ball pin 57 is the calibration end ball pin; when measuring the ball pin swing angle of the first ball pin 53, the second ball pin 57 is the moving end ball pin and the first ball pin 53 is the calibration end ball pin.

[0063] S4: Adjust the boom body 5 based on the auxiliary calibration mark of the ball pin at the moving end so that the ball pin at the moving end is at its maximum allowable swing angle, and measure the ball pin swing angle of the ball pin at the calibration end based on the auxiliary calibration mark of the ball pin at the calibration end, which is the swing angle margin of the McPherson suspension.

[0064] S401: driving the boom body 5 to rotate around its boom axis 51 so that the auxiliary calibration axis 55 of the moving end ball pin is located on the corresponding swing angle conical surface 54 .

[0065] Specifically, the model of the boom body 5 can be manually dragged to rotate the boom body 5 around its boom axis 51, and the auxiliary verification axis 55 at the moving end ball pin can be attached to the swing angle conical surface 54 on the same side. That is, at this time, the swing angle margin of the moving end ball pin is exhausted, and then the verification end ball pin on the other side is observed.

[0066] When adjusting the boom position, in addition to manual adjustment, refer to Figure 4 , you can also impose an angle constraint on the angle α between the center line of the first boom ball pin and the ball pin axis of the first ball pin 53, so that the angle α is equal to the allowable maximum swing angle of the first ball pin 53; or set a corresponding constraint on the axis of the first ball pin 53 and the swing angle conical surface 54. The above two adjustment methods both assist the tester in measuring the ball pin swing angle by setting an auxiliary verification axis 55 and a swing angle conical surface 4, thereby quickly, simply and directly verifying the ball pin swing angle, thereby improving the verification efficiency.

[0067] S402: Observe whether the auxiliary calibration axis 55 of the calibration end ball pin is located within the corresponding swing angle conical surface 54:

[0068] After the swing angle allowance of the ball pin at the moving end is exhausted, observe the positional relationship between the auxiliary calibration axis 55 of the ball pin at the verification end and the swing angle conical surface 54: if the auxiliary calibration axis 55 of the ball pin at the verification end is located within the swing angle conical surface 54, it means that the model has not penetrated the mold in this state, and the next step is to measure the swing angle allowance of the ball pin at the verification end; if the auxiliary calibration axis 55 of the ball pin at the verification end is located on the side wall of the swing angle conical surface 54, it means that the swing angle of the ball pin of the auxiliary calibration axis of the ball pin at the verification end is already at the maximum allowable swing angle, according to The design requirement for the swing angle margin is at least 3° (different manufacturers have different values ​​for the remaining margin requirements based on the suspension). If the design status at this time is unqualified, the suspension structure needs to be redesigned and adjusted. If the auxiliary verification axis 55 of the verification end ball pin is outside the swing angle conical surface 54, then mold penetration occurs, the swing angle of the verification end ball pin is exhausted, and interference will occur during the actual movement of the suspension. The suspension structure needs to be redesigned and adjusted, that is, the relative angles of the ball seats at both ends of the boom body 5 need to be redesigned. The positional relationship between the auxiliary verification axis 55 and the swing angle conical surface 54 makes it easier for the tester to observe and adjust the boom body 5.

[0069] For example, the first ball pin 53 is used as the moving end ball pin and the second ball pin 57 is used as the verification end ball pin. The tester manually rotates and fine-tunes the boom body 5 until the auxiliary verification axis 55 at the first ball pin 53 is attached to the swing angle cone surface 54 at the first ball pin 53, so that the rotation of the first ball pin 53 reaches the maximum allowable swing angle, which is equivalent to the ball pin swing angle of the first ball pin 53 being exhausted, and confirming that the auxiliary verification axis 55 of the second ball pin 57 is still on its inner swing angle cone surface 54, and then further determining the actual swing angle margin of the second ball pin 57 at this time. The swing angle margin here is the swing angle margin of the McPherson suspension under this state.

[0070] S403: Measure the swing angle of the ball pin at the calibration end.

[0071] Specifically, still taking the second ball pin 57 as the calibration end ball pin as an example, refer to Figure 3When measuring the ball pin swing angle of the second ball pin 57, a first measuring plane 58 is made through the suspension rod axis 51 and the auxiliary verification axis 55 at the second ball pin 57, and then a second measuring plane 59 perpendicular to the first measuring plane 58 is made through the auxiliary verification axis 55. The second measuring plane 59 is the actual swing plane of the second ball pin 57 relative to the second suspension pin ball seat 56. The second measurement plane 59 intersects the swing angle cone 54 at a first intersection line 591 and a second intersection line 592. The fan-shaped area formed between the first intersection line 591 and the second intersection line 592 represents the possible swing angle of the ball pin within the actual swing plane. Finally, the angles between the auxiliary calibration axis 55 and the first and second intersection lines 591 and 592 are measured. When the boom body 5 is moved, as the auxiliary calibration axis 55 at the moving end ball pin moves from one side of the swing angle cone 54 to the other side, the side where the angle gradually decreases represents the actual swing angle margin of the second ball pin 57 in the rotational direction. In other embodiments, referring to the above table, specific movement states can be input into the 3D software to place the McPherson suspension under test under different steering and bouncing conditions. The above measurement steps are repeated until the swing angle of the second ball pin 57 under each condition is determined to determine the rationality of the suspension design.

[0072] It should be noted that in the measurement method proposed in this application, since the intersection lines, namely the first intersection line 591 and the second intersection line 592, are obtained in space, the angle between the two intersection lines will change slightly with the different positions of the movable end ball pin rotating on the swing angle conical surface 54. Therefore, the obtained swing angle margin is an approximate value, with an error of approximately within 0.1°, which is in line with the verification accuracy of the design judgment.

[0073] S5: Repeat the above steps until the swing angle margin measurement of the McPherson suspension in each state to be verified is completed.

[0074] Based on the above stabilizer bar ball pin swing angle calibration method, the present application also proposes a stabilizer bar ball pin swing angle calibration system, which includes:

[0075] The first module is used to establish a simulation model of a McPherson suspension, wherein the simulation model is in a state to be verified and includes a boom body 5, a sliding column side mounting structure connected to one end of the boom body 5, and a stabilizer bar side mounting structure connected to the other end of the boom body 5, wherein a first boom ball seat 52 is fixed to one end of the boom body 5, a first ball pin 53 is hingedly provided on the first boom ball seat 52, and the first ball pin 53 is fixed to the sliding column side mounting structure; a second boom ball seat 56 is fixed to the other end of the boom body 5, a second ball pin 57 is hingedly provided on the second boom ball seat 56, and the second ball pin 57 is fixed to the stabilizer bar side mounting structure;

[0076] The second module is used to: establish auxiliary verification marks at the first ball pin 53 and the second ball pin 57;

[0077] The third module is used to select one end of the first ball pin 53 and the second ball pin 57 as the moving end ball pin and the other end as the calibration end ball pin;

[0078] The fourth module is used to adjust the boom body 5 so that the movable end ball pin is at its maximum allowable swing angle based on the auxiliary verification mark of the movable end ball pin, and measure the ball pin swing angle of the verification end ball pin based on the auxiliary verification mark of the verification end ball pin;

[0079] Module 5: Repeat the above steps until the swing angle margin measurement of the McPherson suspension in each state to be verified is completed.

[0080] The present application embodiment also provides a storage medium having a computer program stored thereon, and the computer program implements the steps of the above-mentioned embodiments when executed by the processor. It should be noted that the storage medium of the embodiment of the present application can adopt any combination of one or more computer-readable media. The computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium can be, for example, but not limited to: an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples (non-exhaustive list) of computer-readable storage media include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this document, a computer-readable storage medium can be any tangible medium containing or storing a program, which can be used by an instruction execution system, device or device or used in combination with it.

[0081] A computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, which carries computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transport a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0082] Program code embodied on a computer-readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0083] The computer program code for performing the operations of the present application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0084] Corresponding to the above-mentioned stabilizer bar ball pin swing angle calibration method, an embodiment of the present application also provides an electronic device, including a memory and a processor, wherein the memory stores a computer program running on the processor, and the processor implements the steps of the above-mentioned embodiments when executing the computer program.

[0085] In the description of this application, it should be noted that the orientation or positional relationship indicated by the terms "upper" and "lower" is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be fixed, detachably connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0086] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0087] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A method for calibrating the swing angle of a stabilizer bar ball pin, characterized in that: It includes: A simulation model of a McPherson suspension is established, the simulation model is in a state to be verified, and includes a suspension rod body (5), a sliding column side mounting structure connected to one end of the suspension rod body (5), and a stabilizer bar side mounting structure connected to the other end of the suspension rod body (5), wherein a first suspension rod ball seat (52) is fixed to one end of the suspension rod body (5), a first ball pin (53) is hingedly provided on the first suspension rod ball seat (52), and the first ball pin (53) is fixed to the sliding column side mounting structure; a second suspension rod ball seat (56) is fixed to the other end of the suspension rod body (5), a second ball pin (57) is hingedly provided on the second suspension rod ball seat (56), and the second ball pin (57) is fixed to the stabilizer bar side mounting structure; Establishing auxiliary verification marks at the first ball pin (53) and the second ball pin (57); Selecting any one of the first ball pin (53) and the second ball pin (57) as the moving end ball pin, and the other ball pin as the calibration end ball pin; Adjusting the suspension rod body (5) based on the auxiliary calibration mark of the movable end ball pin so that the movable end ball pin is at its maximum permissible swing angle, and measuring the ball pin swing angle of the calibration end ball pin based on the auxiliary calibration mark of the calibration end ball pin, which is the swing angle margin of the McPherson suspension; Repeat the above steps until the swing angle margin measurement of the McPherson suspension in each state to be verified is completed.

2. A method for calibrating the swing angle of a stabilizer bar ball pin according to claim 1, characterized in that: Auxiliary verification marks are established at the first ball pin (53) and the second ball pin (57), which include: An auxiliary calibration axis (55) is created coaxially along the first ball pin (53) and the second ball pin (57).

3. A method for calibrating the swing angle of a stabilizer bar ball pin according to claim 2, characterized in that: Establishing auxiliary verification marks at the first ball pin (53) and the second ball pin (57), further comprising: Creating a swing angle conical surface (54) around the center line of the first boom ball seat (52), wherein the cone angle of the swing angle conical surface (54) is equal to the maximum allowable swing angle of the first ball pin (53); A swing angle conical surface (54) is created around the center line of the second boom ball seat (56), and the cone angle of the swing angle conical surface (54) is equal to the maximum allowable swing angle of the second ball pin (57).

4. A method for calibrating the swing angle of a stabilizer bar ball pin according to claim 3, characterized in that: Adjusting the boom body (5) based on the auxiliary calibration mark of the movable end ball pin so that the movable end ball pin is at its maximum permissible swing angle specifically includes: The boom body (5) is driven to rotate around its boom axis (51) so that the auxiliary calibration axis (55) of the movable end ball pin is attached to its corresponding swing angle conical surface (54).

5. A method for calibrating the swing angle of a stabilizer bar ball pin according to claim 4, characterized in that: Adjusting the boom body (5) based on the auxiliary calibration mark of the movable end ball pin so that the movable end ball pin is at its maximum permissible swing angle, further comprising: Observe whether the auxiliary calibration axis (55) of the calibration end ball pin is located within the corresponding swing angle conical surface (54): If the auxiliary calibration axis (55) of the calibration end ball pin is located within the corresponding swing angle conical surface (54), then the ball pin swing angle of the calibration end ball pin is measured at this time; If the auxiliary calibration axis (55) of the calibration end ball pin is located outside the corresponding swing angle conical surface (54) or is attached to the swing angle conical surface (54), the simulation model of the McPherson suspension is redesigned.

6. A method for calibrating the swing angle of a stabilizer bar ball pin according to claim 5, characterized in that: If the auxiliary calibration axis (55) of the calibration end ball pin is located within the corresponding swing angle conical surface (54), measuring the ball pin swing angle of the calibration end ball pin at this time specifically includes: A first measuring plane (58) is formed by passing through the boom axis (51) and the auxiliary calibration axis (55) at the calibration end ball pin; A second measuring plane (59) perpendicular to the first measuring plane (58) is formed through the auxiliary calibration axis (55) at the calibration end ball pin, and a first intersection line (591) and a second intersection line (592) exist between the second measuring plane (59) and the swing angle conical surface (54) at the calibration end ball pin; The gradually decreasing angle between the auxiliary calibration axis (55) at the calibration end ball pin and the first intersection line (591) and the second intersection line (592) on the second measuring plane (59) is the ball pin swing angle margin of the calibration end ball pin.

7. A method for calibrating the swing angle of a stabilizer bar ball pin according to claim 2, characterized in that: The auxiliary calibration axis (55) is set as a cylindrical surface with a radius less than or equal to 0.00001 mm.

8. A stabilizer bar ball pin swing angle calibration system, characterized in that: It includes: The first module is used to establish a simulation model of a McPherson suspension, wherein the simulation model is in a state to be verified and comprises a suspension rod body (5), a sliding column side mounting structure connected to one end of the suspension rod body (5), and a stabilizer bar side mounting structure connected to the other end of the suspension rod body (5), wherein a first suspension rod ball seat (52) is fixed to one end of the suspension rod body (5), a first ball pin (53) is hingedly provided on the first suspension rod ball seat (52), and the first ball pin (53) is fixed to the sliding column side mounting structure; a second suspension rod ball seat (56) is fixed to the other end of the suspension rod body (5), a second ball pin (57) is hingedly provided on the second suspension rod ball seat (56), and the second ball pin (57) is fixed to the stabilizer bar side mounting structure; The second module is used to: establish auxiliary calibration marks and auxiliary calibration axes at the first ball pin (53) and the second ball pin (57); The third module is used to select one end of the first ball pin (53) and the second ball pin (57) as a moving end ball pin and the other end as a calibration end ball pin auxiliary calibration axis; The fourth module is used to: adjust the suspension rod body (5) based on the auxiliary calibration mark of the movable end ball pin so that the movable end ball pin is at its maximum permissible swing angle, and based on the auxiliary calibration mark of the calibration end ball pin, measure the ball pin swing angle of the calibration end ball pin, which is the swing angle margin of the McPherson suspension; The fifth module is used to repeat the above steps until the swing angle margin measurement of the McPherson suspension in each state to be verified is completed.

9. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, a method for calibrating the swing angle of a stabilizer bar ball pin according to any one of claims 1 to 7 is implemented.

10. An electronic device comprising a memory and a processor, wherein the memory stores a computer program running on the processor, wherein: When the processor executes the computer program, the stabilizer bar ball pin swing angle calibration method according to any one of claims 1 to 7 is implemented.

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