A spherical hinge swing angle test test fixture

Abstract

The utility model relates to a kind of spherical hinge swing angle test test tool, including bottom plate, swing mechanism, rotating mechanism and the part mounting and fixing seat for fixed control arm, spherical hinge ball pin is connected with swing mechanism, the swing mechanism is used to control the swing angle of the spherical hinge to be measured, control arm is connected with rotating mechanism, the rotating mechanism is used to control the rotation angle of control arm.Swinging lever of swing mechanism is provided with connecting block at one end.The utility model is simultaneously provided with swing mechanism and rotating mechanism connected with control arm, so that test personnel can quickly adjust the double-side swing angle of spherical hinge according to different rotating positions given by whole vehicle DMU, then pull-out force test can be carried out through swinging lever, solve the problem that swing angle must be tested by three coordinates;Meanwhile, the interference angle existing when the parts of double-side swing angle are in rotation and swing motion can also be simulated.

Description

Technical Field

[0001] This utility model belongs to the technical field of ball hinge performance testing fixtures, and in particular relates to a ball hinge swing angle testing fixture. Background Technology

[0002] The ball joint swing angle test is a test item used to evaluate the key performance of the ball joint. It mainly evaluates the maximum swing angle of the ball joint under the extreme state of motion. It simulates whether the ball pin and ball seat interfere when the tire bounces at the upper and lower limits when the vehicle is driving in complex road conditions. If the ball pin and ball seat interfere during movement, it will cause premature failure of the parts.

[0003] The test method typically used in this experiment involves measuring the maximum swing angle of the ball joint using a coordinate measuring machine (CMM). The operation is complex. First, a special fixture is needed to fix the parts on the test table. Then, the ball joint is swung to its extreme position at one end, and the axis of the ball joint is measured using a CMM. After swinging the ball joint to its extreme position at the other end, the axis of the ball joint is measured again using a CMM, and the angle between the two axes is calculated. During the swing of the ball joint, it is difficult to ensure that the angle between the two axes is on the same horizontal plane, and the parts are also prone to loosening when swinging the ball joint, which affects the accuracy of the test results. With increasing demands for vehicle comfort, the swing angle has increased from 20-23° to 26-30°. Simultaneously, safety requirements have also risen, necessitating a pull-out force of over 30KN from the ball joint design. Therefore, the design must consider the different swing angles at various rotational positions provided by the vehicle's DMU (Dynamic Measurement Unit) to meet both the increased swing angle and pull-out force requirements. This presents a significant challenge for testing. Coordinate measuring machines (CMMs) cannot guarantee accurate swing angle measurements when the entire part rotates to different angles, as precise bending of the ball joint to the desired test position is impossible without tooling. Solving these technical challenges becomes crucial for the design of the ball joint swing angle tooling. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a test fixture for testing the swing angle of a ball hinge, which simulates the rotational and swinging motion of parts with double swing angles and confirms the maximum angle of interference.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: A test fixture for testing the swing angle of a ball hinge includes a base plate, on which a rotating mechanism is fixed. The rotating mechanism is connected to a component mounting base for fixing a control arm. A ball hinge to be tested is mounted on the control arm. The axis of the ball pin of the ball hinge to be tested is kept parallel to the base plate. The ball pin is connected to the swing mechanism. The rotating mechanism includes a support base fixed to the base plate. The support base has a support through hole coaxial with the ball pin. A rotating shaft is rotatably mounted in the support through hole. A scale is provided on the outer periphery of the rotating shaft. The rotating shaft is connected to the component mounting base. The system includes a base fixed to one end of the rotating shaft, a cavity for accommodating the control arm, a clamping block on the end face of the base, a support plate on one side of the base, a bushing fixing block for accommodating the bushing end of the control arm, and a swing mechanism including a swing scale plate fixed to the base plate. The swing scale plate has a guide groove centered on the center of the ball hinge to be tested, and scale lines on its surface. A swing support block that can slide along the groove is provided in the guide groove. The swing support block has a through hole coaxial with the ball pin, and a swing rod connected to the end of the ball pin passes through the through hole. A connecting block is provided at the end of the swing rod away from the ball pin.

[0006] Preferably, the bottom of the swing support is provided with a sliding roller, the outer diameter of which is smaller than the width of the guide groove and is tangent to one side of the guide groove.

[0007] Preferably, the swing rod is connected to the end of the ball pin via a threaded connecting sleeve.

[0008] Preferably, the rotating mechanism further includes a brake block, which includes a horizontal plate and a vertical plate. The horizontal plate is fixed to the top surface of the support block by bolts, and the bottom surface of the vertical plate is an arc surface that is tangential to the side surface of the rotating shaft.

[0009] Preferably, a bearing is fitted on the rotating shaft, the outer diameter of the bearing matches the inner diameter of the support through hole, and a pressure plate is provided at the end of the rotating shaft away from the part mounting base.

[0010] The beneficial effects are as follows: This utility model is equipped with both a swing mechanism and a rotation mechanism connected to the control arm, so that the tester can quickly adjust the swing angle of the ball hinge on both sides according to the different rotation positions given by the vehicle DMU, ​​and then the pull-out force test can be performed by the swing rod.

[0011] This utility model has a reasonable overall structure, strong versatility, low cost, improved testing efficiency, and improved test result accuracy. As a new testing fixture structure, it solves the problem of having to use a three-coordinate measuring machine to test the swing angle. At the same time, it can also simulate the interference angle between the rotational and swinging motions of parts with double-sided swing angles. Attached Figure Description

[0012] Figure 1 This is a three-dimensional diagram of a test fixture for testing the swing angle of a ball hinge.

[0013] Figure 2 for Figure 1 Exploded view of the central rotating mechanism.

[0014] Figure 3 for Figure 1 Exploded enlarged view of the mounting bracket for the middle part.

[0015] Figure 4 for Figure 1 Explosion-enlarged view of the swing mechanism.

[0016] Among them, 1. Swinging mechanism; 1-1. Support block; 1-2. Swinging rod; 1-3. Threaded connecting sleeve; 1-4. Swinging scale plate; 1-4-1. Indicator line; 1-4-2. Guide groove; 1-5. Sliding roller; 2. Rotating mechanism; 2-1. Support seat; 2-2. Rotating shaft; 2-3. Bearing; 2-4. Pressure plate; 2-5. Scale plate; 2-6. Brake block; 3. Part mounting and fixing seat; 3-1. Base; 3-2. Clamping block; 3-3. Support plate; 3-4. Bushing fixing block; 3-5. Connecting rod; 3-6. Ball seat positioning ring; 4. Base plate; 5. Ball hinge to be tested; 5-1. Ball pin.

[0017] The same markings in each diagram represent the same component. Detailed Implementation

[0018] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0019] like Figure 1As shown, this utility model provides a test fixture for testing the swing angle of a ball hinge, including a base plate 4, a rotating mechanism 2 fixed on the base plate 4, the rotating mechanism 2 being connected to a component mounting base 3 for fixing a control arm, a ball hinge 5 to be tested being mounted on the control arm, the axis of the ball pin 5-1 of the ball hinge 5 to be tested being kept parallel to the base plate 4, and the ball pin 5-1 being connected to the swing mechanism 1.

[0020] like Figure 2 As shown, the rotating mechanism 2 includes a support base 2-1 fixed on the base plate 4. The support base 2-1 has a support through hole coaxial with the ball pin 5-1. A rotating shaft 2-2 is rotatably installed in the support through hole. A scale 2-5 is provided on the outer periphery of the rotating shaft 2-2. The rotating shaft 2-2 is connected to the part mounting base 3.

[0021] like Figure 3 As shown, the component mounting base 3 includes a base 3-1 fixed to one end of the rotating shaft 2-2. The base 3-1 has a cavity for accommodating the control arm. The end face of the base 3-1 is provided with a clamping block 3-2. A support plate 3-3 is provided on one side of the base 3-1. A bushing fixing block 3-4 for accommodating the bushing end of the control arm is provided on the support plate 3-3.

[0022] like Figure 4 As shown, the swing mechanism 1 includes a swing scale plate 1-4 fixed on the base plate 4. The swing scale plate 1-4 has a guide groove 1-4-2 with the center of the ball of the ball hinge 5 to be tested as the center. The surface of the swing scale plate 1-4 is provided with scale lines. The guide groove 1-4-2 is provided with a swing support block 1-1 that can slide along the groove. The swing support block 1-1 has a through hole coaxial with the ball pin 5-1. The swing rod 1-2 connected to the end of the ball pin 5-1 passes through the through hole. The end of the swing rod 1-2 away from the ball pin 5-1 is provided with a connecting block.

[0023] In a kind of Figure 4 In the specific embodiment shown, the bottom of the swing support block is provided with a sliding roller 1-5. The outer diameter of the sliding roller 1-5 is smaller than the width of the guide groove 1-4-2 and is tangent to one side of the guide groove 1-4-2. A gap is left between the bottom of the swing support block 1-1 and the swing scale plate 1-4, and the sliding roller 1-5 cooperates with the guide groove 1-4-2 of the swing scale plate 1-4. An indicator line 1-4-1 is marked at the center of the bottom of the swing support block 1-1, which cooperates with the scale line on the swing scale plate 1-4 to facilitate the operator to identify the maximum swing angle of the ball pin 5-1.

[0024] In a kind of Figure 4In the specific embodiment shown, the swing rod 1-2 is detachably connected to the end of the ball pin 5-1 via a threaded connecting sleeve 1-3. The connecting block in this embodiment is a strip-shaped block, used to provide connection to the pull-out force fixture when a pull-out force test is required. The pull-out force fixture transmits the pull-out force to the ball pin 5-1 via the connecting block, swing rod 1-2, and threaded connecting sleeve 1-3 for pull-out force testing.

[0025] In a kind of Figure 2 In the specific embodiment shown, the rotating mechanism 2 further includes a brake block 2-6, which comprises a horizontal plate and a vertical plate. The horizontal plate is fixed to the top surface of the support block 1-1 by bolts. The bottom surface of the vertical plate is an arc surface that tangentially engages with the side surface of the rotating shaft 2-2, and the arc surface is provided with brake grooves to increase friction. When adjusting the rotation of the control arm, the bolts are loosened, and after the rotation angle adjustment is completed, the bolts are tightened so that the bottom surface of the vertical plate of the brake block 2-6 is pressed against the side surface of the rotating shaft 2-2 to achieve braking.

[0026] In a kind of Figure 2 In the specific embodiment shown, a bearing 2-3 is fitted on the rotating shaft 2-2, the outer diameter of the bearing 2-3 matches the inner diameter of the support through hole, and a pressure plate 2-4 is provided at the end of the rotating shaft 2-2 away from the part mounting base 3.

Claims

1. A ball joint swing angle test test fixture characterized by, The system includes a base plate on which a rotating mechanism is fixed. The rotating mechanism is connected to a component mounting bracket for fixing a control arm. A ball hinge to be tested is mounted on the control arm. The axis of the ball pin of the ball hinge to be tested is kept parallel to the base plate. The ball pin is connected to a swing mechanism. The rotating mechanism includes a support base fixed to the base plate. The support base has a support through hole coaxial with the ball pin. A rotating shaft is rotatably mounted in the support through hole. A scale is provided on the outer periphery of the rotating shaft. The rotating shaft is connected to the part mounting base. The component mounting base includes a base fixed to one end of the rotating shaft. The base has a cavity for accommodating the control arm. A clamping block is provided on the end face of the base. A support plate is provided on one side of the base. A bushing fixing block is provided on the support plate for accommodating the bushing end of the control arm. The swing mechanism includes a swing scale plate fixed on the base plate. The swing scale plate has a guide groove centered on the center of the ball hinge to be tested. The surface of the swing scale plate is provided with scale lines. A swing support block that can slide along the groove is provided in the guide groove. A through hole coaxial with the ball pin is provided on the swing support block. A swing rod connected to the end of the ball pin passes through the through hole. A connecting block is provided at the end of the swing rod away from the ball pin.

2. A ball joint swing angle test test fixture according to claim 1, wherein The bottom of the swing support is provided with a sliding roller. The outer diameter of the sliding roller is smaller than the width of the guide groove and is tangent to one side of the guide groove.

3. The ball joint swing angle test test fixture of claim 1, wherein, The swing rod is connected to the end of the ball pin via a threaded connecting sleeve.

4. The ball joint swing angle test test fixture of claim 1, wherein, The rotating mechanism also includes a brake block, which includes a horizontal plate and a vertical plate. The horizontal plate is fixed to the top surface of the support block by bolts, and the bottom surface of the vertical plate is an arc surface that is tangential to the side surface of the rotating shaft.

5. The ball joint swing angle test test fixture of claim 1, wherein, A bearing is fitted on the rotating shaft, and the outer diameter of the bearing matches the inner diameter of the support through hole. A pressure plate is provided at the end of the rotating shaft away from the mounting base of the part.

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