Ball hinge finished product loaded swing torque detection tool and detection method thereof

Abstract

The application provides a ball hinge finished product swing torque detection tool and a detection method thereof, which comprises a measuring mandrel, a detection tool seat, a load base, a load block and a swing torque tool, a to-be-detected ball hinge is installed in the detection tool seat, and the to-be-detected ball hinge comprises an inner ring and an outer ring; the outer ring is fixedly installed in the detection tool seat, the inner ring is installed in the outer ring, the swing torque tool is installed in an axial through hole of the inner ring, and the measuring mandrel is fixedly installed in an axial through hole of the swing torque tool; a tension meter is connected to the upper end of the measuring mandrel, the lower end of the measuring mandrel is connected to the upper end of the load base in a soft connection mode, and the lower end of the load base is connected to the load block. The swing torque tool and the measuring mandrel are sequentially arranged in the inner ring of the ball hinge, and the load block is arranged at the lower end of the measuring mandrel, so that the actual working condition of the ball hinge can be simulated, and the unloaded swing torque detection requirement of the ball hinge finished product can be met.

Description

Technical Field

[0001] This invention relates to the field of ball joint swing torque detection technology, specifically to a tooling and method for detecting the on-load swing torque of a finished ball joint. Background Technology

[0002] A ball joint typically consists of an inner ring, an outer ring, a spacer, and a self-lubricating gasket. The self-lubricating gasket lubricates the inner ring during rotation, making it suitable for high-load, low-speed conditions. However, there are still some shortcomings in detecting the unloaded oscillation torque of the large ball joint in an automatic tilting device. It cannot simulate actual working conditions, and the torque detection is relatively complex, failing to meet high-quality production requirements. Therefore, it is essential to invent a tooling design based on the principle of simulating assembly requirements under actual working conditions for detecting the loaded oscillation torque of the ball joint finished product. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the purpose of this invention is to provide a tooling and method for detecting the loaded swing torque of a ball joint finished product.

[0004] The ball joint finished product on-load swing torque detection fixture provided by the present invention includes a measuring mandrel, a detection fixture seat, a load base, a load block, and a swing torque fixture. The ball joint to be detected is installed in the detection fixture seat. The ball joint to be detected includes an inner ring and an outer ring.

[0005] The outer ring is fixedly installed inside the testing fixture, the inner ring is installed inside the outer ring, the swing torque fixture is installed in the axial through hole of the inner ring, and the measuring mandrel is fixedly installed in the axial through hole of the swing torque fixture.

[0006] The upper end of the measuring mandrel is connected to a tension gauge, the lower end of the measuring mandrel is flexibly connected to the upper end of the load base, and the lower end of the load base is connected to the load block.

[0007] Preferably, both the lower end of the measuring mandrel and the upper end of the load base are provided with lifting ring hinges, and the lifting ring hinge at the lower end of the measuring mandrel is connected to the lifting ring hinge at the upper end of the load base.

[0008] Preferably, the load block is detachably mounted on the load base.

[0009] Preferably, the testing fixture has a through hole along its circumference, and the outer ring is fixedly installed inside the through hole.

[0010] Preferably, the upper end of the outer ring extends radially outward to form a connecting portion, which is connected to the upper end of the testing fixture by bolts.

[0011] Preferably, the force gauge includes a spring scale.

[0012] Preferably, the axial through hole of the swing torque fixture is provided with an internal thread, and the measuring mandrel is provided with an external thread. The measuring mandrel is fixedly installed inside the axial through hole of the swing torque fixture through threaded engagement.

[0013] The detection method of the ball joint finished product under load swing torque detection fixture provided by the present invention, using the ball joint finished product under load swing torque detection fixture, includes the following steps:

[0014] S1: Install the ball hinge into the seat hole in the middle of the testing fixture, and use bolts to assemble the outer ring into the testing fixture to simulate the actual assembly state;

[0015] S2: Install the oscillating torque fixture into the inner hole of the inner ring, tighten the thread on the outside of the measuring mandrel to fix the measuring mandrel, and ensure that the inner ring can rotate flexibly relative to the outer ring under the drive of the measuring mandrel;

[0016] S3: Connect the load base to the lower end of the measuring mandrel via the lifting ring hinge, and place the preset number of load blocks on the lower load base according to the measurement requirements;

[0017] S4: Use a tension gauge to fit over one end of the measuring mandrel, pull the measuring mandrel to make the inner ring swing, and thus obtain the swing torque value.

[0018] Preferably, in step S1, after the outer ring is assembled in the testing fixture, the outer ring is checked for tilting, twisting or deformation, and adjustments are made according to the test results.

[0019] Preferably, in step S4, the force gauge pulls the measuring spindle to measure and record the force in eight directions according to the eight equal divisions of the circumference. Then, the ball joint is removed and installed in the opposite direction. The force in eight directions is measured and recorded in the same way. The ball joint torque value is the maximum swing force P in eight directions on both sides. The maximum swing torque value is determined by the product of the lever arm L and the swing force.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] This invention has a simple structure and is easy to operate. It adopts a technical means of sequentially setting the swing torque fixture and the measuring mandrel inside the inner ring of the ball joint, and setting a load block at the lower end of the measuring mandrel. This can simulate the actual working conditions of the ball joint and meet the requirements for testing the unloaded swing torque of the finished ball joint. Attached Figure Description

[0022] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0024] The diagram shows:

[0025] Measuring mandrel 1, load block 5

[0026] Inspection fixture 2, swing torque fixture 6

[0027] Ring hinge 3 Outer ring 7

[0028] Load base 4 Inner ring 8 Detailed Implementation

[0029] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0030] This invention discloses a tooling and method for detecting the loaded swing torque of a ball joint finished product, which can greatly improve production efficiency and detection accuracy, meet the assembly requirements of the ball joint, and meet the unloaded swing torque detection requirements of the ball joint finished product by simulating the actual working conditions of the ball joint.

[0031] The ball joint finished product on-load swing torque detection fixture provided by the present invention, such as... Figure 1 As shown, the device includes a measuring mandrel 1, a testing fixture 2, a load base 4, a load block 5, and a swing torque fixture 6. The testing fixture 2 houses a ball joint to be tested, which includes an inner ring 8 and an outer ring 7. The outer ring 7 is fixedly installed inside the testing fixture 2, and the inner ring 8 is installed inside the outer ring 7. The swing torque fixture 6 is installed in the axial through hole of the inner ring 8, and the measuring mandrel 1 is fixedly installed in the axial through hole of the swing torque fixture 6.

[0032] Setting the ball joint inside the testing fixture 2 can simulate the actual assembly state and meet the testing requirements. Preferably, the axial through hole of the swing torque fixture 6 is provided with an internal thread, and the measuring mandrel 1 is provided with an external thread. The measuring mandrel 1 is fixedly installed inside the axial through hole of the swing torque fixture 6 through threaded engagement. By fixing the measuring mandrel 1 inside the swing torque fixture 6, it can be rotated flexibly and conveniently to ensure the swing torque inspection requirements.

[0033] The upper end of the measuring mandrel 1 is connected to a tension gauge, and the lower end of the measuring mandrel 1 is flexibly connected to the upper end of the load base 4. The lower end of the load base 4 is connected to the load block 5. Preferably, both the lower end of the measuring mandrel 1 and the upper end of the load base 4 are provided with a lifting ring hinge 3, and the lifting ring hinge 3 at the lower end of the measuring mandrel 1 is connected to the lifting ring hinge 3 at the upper end of the load base 4. Preferably, the load block 5 is detachably mounted on the load base 4, and the loaded swing torque requirement of the ball joint detection can be adjusted by simply increasing or decreasing the number of load blocks 5.

[0034] Preferably, the testing fixture 2 has a through hole along its circumference, and the outer ring 7 is fixedly installed inside the through hole. The upper end of the outer ring 7 extends radially outward to form a connecting part, which is connected to the upper end of the testing fixture 2 by bolts. The tension gauge includes a spring scale. In a preferred embodiment of the present invention, the spring scale pulls the measuring mandrel 1, causing the inner ring 8 of the ball joint to swing, and the lever arm L is determined to be 0.5m, allowing for a simple and direct reading of the swing torque value.

[0035] The present invention includes the following steps for testing ball joints: S1: Correctly install the finished ball joint into the seat hole in the middle of the testing fixture 2, and simulate the assembly requirements by using bolts to assemble the ball joint into the testing fixture 2, simulating the actual assembly state, wherein the outer ring 7 is free from tilting, twisting, or deformation; S2: Install the swing torque fixture 6 into the inner hole of the inner ring 8, and tighten the nut to fix the measuring mandrel 1 to ensure flexible rotation; S3: Connect the load base 4 to the lower end of the measuring mandrel 1 through the lifting ring hinge 3, and place the load block 5 on the lower load base 4 according to the measurement requirements; S4: Use a tension gauge to fit over one end of the measuring mandrel 1, pull the measuring mandrel 1 to make the inner ring 8 swing, measure and record the force in eight directions according to the eight equal divisions of the circumference, and then remove and install the bearing in reverse, and measure and record the force in the same eight directions. The ball joint torque value is determined by selecting the maximum swing force P in eight directions on both sides, and the product of the lever arm L and the swing force is used to determine the maximum swing torque value.

[0036] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0037] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A fixture for detecting the under-load oscillation torque of a finished ball joint, characterized in that, It includes a measuring mandrel (1), a testing fixture (2), a load base (4), a load block (5), and a swing torque fixture (6). The testing fixture (2) contains a ball joint to be tested, which includes an inner ring (8) and an outer ring (7). The outer ring (7) is fixedly installed inside the detection fixture (2), the inner ring (8) is installed inside the outer ring (7), the swing torque fixture (6) is installed in the axial through hole of the inner ring (8), and the measuring spindle (1) is fixedly installed in the axial through hole of the swing torque fixture (6). The upper end of the measuring mandrel (1) is connected to a tension gauge, the lower end of the measuring mandrel (1) is flexibly connected to the upper end of the load base (4), and the lower end of the load base (4) is connected to the load block (5).

2. The fixture for detecting the loaded oscillating torque of a ball joint as described in claim 1, characterized in that, The lower end of the measuring mandrel (1) and the upper end of the load base (4) are both provided with a lifting ring hinge (3), and the lifting ring hinge (3) at the lower end of the measuring mandrel (1) is connected to the lifting ring hinge (3) at the upper end of the load base (4).

3. The fixture for detecting the loaded oscillating torque of a ball joint as described in claim 1, characterized in that, The load block (5) can be detachably installed on the load base (4).

4. The fixture for detecting the loaded oscillating torque of a ball joint as described in claim 1, characterized in that, The testing fixture (2) has a through hole along its circumference, and the outer ring (7) is fixedly installed inside the through hole.

5. The fixture for detecting the loaded oscillating torque of a ball joint as described in claim 4, characterized in that, The upper end of the outer ring (7) extends radially outward to form a connecting part, which is connected to the upper end of the detection fixture (2) by bolts.

6. The fixture for detecting the loaded oscillating torque of a ball joint as described in claim 1, characterized in that, The tension gauge includes a spring scale.

7. The fixture for detecting the loaded oscillating torque of a ball joint as described in claim 1, characterized in that, The axial through hole of the swing torque fixture (6) is provided with an internal thread, and the measuring mandrel (1) is provided with an external thread. The measuring mandrel (1) is fixedly installed inside the axial through hole of the swing torque fixture (6) by threaded engagement.

8. A method for detecting the under-load oscillation torque of a ball joint finished product using a testing fixture, characterized in that, The tooling for detecting the loaded oscillating torque of a ball joint as described in any one of claims 1-7 comprises the following steps: S1: Install the ball hinge into the seat hole in the middle of the testing fixture (2), and use bolts to assemble the outer ring (7) into the testing fixture (2) to simulate the actual assembly state; S2: Install the swing torque fixture (6) into the inner hole of the inner ring (8), tighten the thread on the outside of the measuring mandrel (1) to fix the measuring mandrel (1), and ensure that the inner ring (8) can rotate flexibly relative to the outer ring (7) under the drive of the measuring mandrel (1); S3: Connect the load base (4) to the lower end of the measuring spindle (1) through the lifting ring hinge (3), and place the preset number of load blocks (5) on the lower load base (4) according to the measurement requirements; S4: Use a tension gauge to fit on one end of the measuring mandrel (1), pull the measuring mandrel (1) to make the inner ring (8) swing, and thus obtain the swing torque value.

9. The detection method of the on-load swing torque detection fixture for ball joint finished products according to claim 8, characterized in that, In step S1, after the outer ring (7) is assembled into the testing fixture (2), the outer ring (7) is checked for tilting, twisting or deformation, and adjusted according to the test results.

10. The detection method of the on-load swing torque detection fixture for ball joint finished products according to claim 8, characterized in that, In step S4, the force gauge pulls the measuring spindle (1) to measure and record the forces in eight directions according to the eight equal divisions of the circumference. Then, the ball joint is removed and installed in the opposite direction. The forces in eight directions are measured and recorded in the same way. The ball joint torque value is the maximum swing force P in the eight directions on both sides. The maximum swing torque value is determined by the product of the lever arm L and the swing force.

Images