Star sleeve grouping precision measuring device

Abstract

The utility model provides a star shape cover grouping precision measuring device relates to measuring device technical field, including star shape cover main part, the outer surface of star shape cover main part is clamped and is connected with the clamping lever, the outer surface fixedly connected with the sliding block of clamping lever, the outer surface sliding connection has the top plate of sliding block, the inner wall of top plate is equipped with the rectangular slot, the inner wall threaded connection of top plate has the limiting piece. The utility model, the design carousel, slide and sliding block drive clamping lever to star shape cover carries out the clamping, drives the sliding block to gather and clamp to the center along the rectangular slot, utilizes the friction of the surface of limiting piece and carousel surface, controls the rotation of carousel to limit the position of clamping lever, prevents the risk of loosening after clamping firm under external force, further ensures that star shape cover main part clamps firm and ensures that measurement will not move, guarantees the measurement precision and accuracy, makes the flexibility of device greatly increases.

Description

Technical Field

[0001] This utility model relates to the field of measuring device technology, and in particular to a star-shaped grouping precision measuring device. Background Technology

[0002] As a core transmission component of automotive constant velocity joints, the star-shaped sleeve's geometric precision, such as the roundness of the ball track, the internal spline tooth profile, and the cylindricity of the journal, directly determines the transmission efficiency and service life of the universal joint. Therefore, it is necessary to ensure that it meets production standards through precise measurement to reduce the risk of vehicle transmission system failure.

[0003] In traditional measurement processes, when inspectors measure the star-shaped sleeve, the testing platform has a special fixture. The clamping force of the traditional fixture relies on manually tightening bolts or spring preload, without a locking structure. If external vibration occurs during the measurement process, the bolts or springs are prone to slight loosening, resulting in a decrease in clamping force and axial or radial displacement of the star-shaped sleeve. The clamping state needs to be readjusted. When using a fixed fixture, if the star-shaped sleeve needs to be rotated, the pressure plate must be loosened first, and the star-shaped sleeve must be manually rotated to the specified angle before being re-tightened. This process is not only time-consuming, but also prone to displacement of the star-shaped sleeve due to changes in force during re-tightening, requiring recalibration of the measurement benchmark, which seriously affects the testing efficiency. Utility Model Content

[0004] The purpose of this invention is to solve the problems of easy loosening and poor flexibility of traditional clamps in the prior art, and to provide a star-shaped sleeve grouping precision measurement device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a star-shaped sleeve grouping precision measuring device, comprising a star-shaped sleeve body, a clamping rod engaged with the outer surface of the star-shaped sleeve body, a slider fixedly connected to the outer surface of the clamping rod, a top plate slidably connected to the outer surface of the slider, a rectangular groove formed on the inner wall of the top plate, a limit member threadedly connected to the inner wall of the top plate, a base fixedly connected to the outer surface of the top plate, a connecting rod fixedly connected to the inner wall of the base, a turntable rotatably connected to the outer surface of the connecting rod, a sliding groove formed on the inner wall of the turntable, and a sliding rod slidably connected to the inner wall of the sliding groove.

[0006] In a preferred embodiment, a pull rod is fixedly connected to the outer surface of the turntable, a bearing is fixedly connected to the outer surface of the base, a disc is fixedly connected to the outer surface of the bearing, and a support leg is fixedly connected to the outer surface of the disc.

[0007] In a preferred embodiment, the outer surface of the disc is rotatably connected to the outer surface of the base, and the outer surface of the pull rod is rotatably connected to the inner wall of the base.

[0008] In a preferred embodiment, the outer surface of the clamping rod is slidably connected to the outer surface of the top plate.

[0009] In a preferred embodiment, the outer surface of the turntable is rotatably connected to the outer surface of the slider.

[0010] In a preferred embodiment, the outer surface of the slide rod is slidably connected to the inner wall of the base.

[0011] In a preferred embodiment, the outer surface of the turntable is rotatably connected to the inner wall of the top plate, and the outer surface of the turntable is rotatably connected to the outer surface of the limiting member.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: This invention utilizes a turntable, sliding rod, and slider to drive a clamping rod to hold a star-shaped sleeve. This causes the slider to slide along a rectangular groove towards the center, clamping the sleeve securely. This clamping method can clamp the star-shaped sleeve from both the inner and outer surfaces. The friction between the surface of the limiting component and the turntable surface controls the rotation of the turntable, limiting the position of the clamping rod and preventing the risk of loosening under external force after secure clamping. This further ensures the star-shaped sleeve is firmly clamped and will not move during measurement, guaranteeing measurement accuracy and precision. Through the design of the disc and bearings, when multi-angle measurements of the star-shaped sleeve are required, rotating the base allows for measurement, greatly increasing the flexibility of the device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a star-shaped grouping precision measuring device provided by this utility model.

[0014] Figure 2 A schematic diagram of the base structure of a star-shaped grouping precision measuring device provided by this utility model.

[0015] Figure 3 A schematic diagram of the clamping structure of a star-shaped sleeve grouping precision measuring device provided by this utility model.

[0016] Figure 4 A schematic diagram of the transmission structure of a star-shaped grouping precision measuring device provided by this utility model.

[0017] Legend: 1. Star-shaped sleeve body; 2. Top plate; 3. Limiting component; 4. Base; 5. Support leg; 6. Pull rod; 7. Bearing; 8. Clamping rod; 9. Slider; 10. Rectangular groove; 11. Slide rod; 12. Connecting rod; 13. Slide groove; 14. Turntable; 15. Disc. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1 like Figures 1-4 As shown, this utility model provides a technical solution: a star-shaped sleeve grouping precision measuring device, including a star-shaped sleeve body 1, a clamping rod 8 is engaged and connected to the outer surface of the star-shaped sleeve body 1, a slider 9 is fixedly connected to the outer surface of the clamping rod 8, the outer surface of the clamping rod 8 is slidably connected to the outer surface of the top plate 2, the outer surface of the slider 9 is slidably connected to the top plate 2, a rectangular groove 10 is opened on the inner wall of the top plate 2, a limiting member 3 is threadedly connected to the inner wall of the top plate 2, a base 4 is fixedly connected to the outer surface of the top plate 2, a connecting rod 12 is fixedly connected to the inner wall of the base 4, a turntable 14 is rotatably connected to the outer surface of the connecting rod 12, a sliding groove 13 is opened on the inner wall of the turntable 14, the outer surface of the turntable 14 is rotatably connected to the outer surface of the slider 9, the outer surface of the turntable 14 is rotatably connected to the inner wall of the top plate 2, the outer surface of the turntable 14 is rotatably connected to the outer surface of the limiting member 3, a sliding rod 11 is slidably connected to the inner wall of the sliding groove 13, and the outer surface of the sliding rod 11 is slidably connected to the inner wall of the base 4.

[0020] In this embodiment, by designing clamping rods 8, the four clamping rods 8 can stably clamp the star-shaped sleeve body 1 on its outer surface and inner wall. A slider 9 is fixedly connected to the bottom of the clamping rods 8, and the slider 9 is slidably connected to the inner wall of the rectangular groove 10. The width of the slider 9 is the same as the width of the inner wall of the rectangular groove 10, restricting the slider 9 from sliding radially within the rectangular groove 10. This controls the distance between the clamping rods 8, facilitating clamping of the star-shaped sleeve body 1 from both the outer surface and the inner wall. A turntable 14 is fixedly connected to the bottom of the slider 9, and a groove 13 is formed on the inner wall of the turntable 14. The groove 13 is shaped from the outer ring towards the center, facilitating the driving of the sliding... The rod 11 retracts towards the center, while the pull rod 6 on the drive turntable 14 drives the turntable 14 to rotate, driving the inner wall slide rod 11 to move towards the center, causing the slider 9 to slide along the rectangular groove 10 and retract towards the center to clamp, thereby clamping and securing the star-shaped sleeve body 1. The limiting member 3, which is threaded to the inner wall of the top plate 2, rotates after the star-shaped sleeve body 1 is clamped securely. The friction between the surface of the limiting member 3 and the surface of the turntable 14 controls the rotation of the turntable 14 to limit the position of the clamping rod 8, preventing the risk of loosening due to external force after clamping and securing. This further ensures that the star-shaped sleeve body 1 is clamped securely and will not move during measurement, thus guaranteeing measurement accuracy and precision.

[0021] Example 2 like Figures 1-4 As shown, a pull rod 6 is fixedly connected to the outer surface of the turntable 14, a bearing 7 is fixedly connected to the outer surface of the base 4, a disc 15 is fixedly connected to the outer surface of the bearing 7, a support leg 5 is fixedly connected to the outer surface of the disc 15, the outer surface of the disc 15 is rotatably connected to the outer surface of the base 4, and the outer surface of the pull rod 6 is rotatably connected to the inner wall of the base 4.

[0022] In this embodiment, a bearing 7 is designed and fixedly connected to the bottom of the base 4 on the inner wall of the bearing 7. A disc 15 is fixedly connected to the outer surface of the bearing 7, which facilitates the rotation of the base 4 to the top of the disc 15. After the star-shaped sleeve body 1 is clamped securely, when it is necessary to measure the star-shaped sleeve body 1 from multiple angles, the base 4 can be rotated to test the star-shaped sleeve body 1. The support leg 5 fixedly connected to the bottom of the disc 15 facilitates the support of the entire mechanism and fixes it on the testing platform.

[0023] Working principle: like Figures 1-4 As shown, when it is necessary to measure the star-shaped sleeve body 1, the star-shaped sleeve body 1 needs to be placed on the clamping mechanism. Then, the operator pulls or rotates the pull rod 6 on the turntable 14, causing the turntable 14 to rotate around its own central axis. The inner wall of the turntable 14 has a centripetal groove 13. One end of the slide rod 11 is embedded in the groove 13. When the turntable 14 rotates, the side wall of the groove 13 will generate a radial thrust on the slide rod 11, forcing the slide rod 11 to retract towards the center along the centripetal trajectory of the groove 13. The other end of the slide rod 11 is fixedly connected to the slider 9, and the slider 9 is slidably embedded in the rectangular groove 10. When the slide rod 11 retracts towards the center, it will drive the slider 9 to slide synchronously towards the center along the rectangular groove 10, thereby driving the clamping rod 8 fixed to the top of the slider 9 to move closer to the center. Similarly, it can be moved from the inner wall or the outer wall. When clamping star-shaped sleeve bodies 1 of different sizes, the bottom of the limiting member 3 and the upper surface of the turntable 14 are both rough contact surfaces. After the two are in close contact, a large static friction force is generated. This static friction force can counteract the rotation tendency of the turntable 14 caused by external force, thereby limiting the rotation of the turntable 14 and ensuring that the clamping force of the clamping rod 8 remains stable. This prevents the star-shaped sleeve from shifting due to loose clamping during the measurement process. After the star-shaped sleeve body 1 is fixed above the base 4 by the clamping rod 8, the operator can rotate the base 4 to drive the star-shaped sleeve body 1 to rotate synchronously. At this time, the probes of the roundness meter and the roughness meter of the external testing instruments are aligned with the surface to be measured of the star-shaped sleeve. As the star-shaped sleeve body 1 rotates at a uniform speed, the testing instruments can completely scan its circumferential surface, thereby accurately measuring the key parameters of roundness and roughness. There is no need to repeatedly disassemble and reassemble the star-shaped sleeve, which improves the measurement efficiency and convenience.

[0024] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A star-shaped sleeve grouping precision measuring device, comprising a star-shaped sleeve body (1), characterized in that: The outer surface of the star-shaped sleeve body (1) is fitted with a clamping rod (8), the outer surface of the clamping rod (8) is fixedly connected with a slider (9), the outer surface of the slider (9) is slidably connected with a top plate (2), the inner wall of the top plate (2) is provided with a rectangular groove (10), the inner wall of the top plate (2) is threadedly connected with a limit piece (3), the outer surface of the top plate (2) is fixedly connected with a base (4), the inner wall of the base (4) is fixedly connected with a connecting rod (12), the outer surface of the connecting rod (12) is rotatably connected with a turntable (14), the inner wall of the turntable (14) is provided with a sliding groove (13), and the inner wall of the sliding groove (13) is slidably connected with a sliding rod (11).

2. The star-shaped grouping precision measuring device according to claim 1, characterized in that: A pull rod (6) is fixedly connected to the outer surface of the turntable (14), a bearing (7) is fixedly connected to the outer surface of the base (4), a disc (15) is fixedly connected to the outer surface of the bearing (7), and a support leg (5) is fixedly connected to the outer surface of the disc (15).

3. The star-shaped grouping precision measuring device according to claim 2, characterized in that: The outer surface of the disc (15) is rotatably connected to the outer surface of the base (4), and the outer surface of the pull rod (6) is rotatably connected to the inner wall of the base (4).

4. The star-shaped grouping precision measuring device according to claim 1, characterized in that: The outer surface of the clamp (8) is slidably connected to the outer surface of the top plate (2).

5. The star-shaped grouping precision measuring device according to claim 1, characterized in that: The outer surface of the turntable (14) is rotatably connected to the outer surface of the slider (9).

6. The star-shaped grouping precision measuring device according to claim 1, characterized in that: The outer surface of the slide rod (11) is slidably connected to the inner wall of the base (4).

7. The star-shaped grouping precision measuring device according to claim 1, characterized in that: The outer surface of the turntable (14) is rotatably connected to the inner wall of the top plate (2), and the outer surface of the turntable (14) is rotatably connected to the outer surface of the limiting member (3).

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