A differential case bounce detection device

Abstract

The application provides a differential housing bounce detection device, and relates to the technical field of differential housing detection, which comprises a base and a detection head, a supporting seat is arranged at the middle of the upper end of the base, a rotating seat is arranged at the middle of the upper end of the supporting seat, and the rotating seat is movably installed at the middle of the upper end of the supporting seat through a rotating bearing; a center column is arranged at the middle of the upper end of the rotating seat, the center column is vertically installed at the center point of the rotating seat, and an inner expansion collet is arranged at the bottom of the center column. The positioning structure formed by the cooperation of the taper pressing block and the inner expansion collet can be used for fixing and positioning the differential housing on the basis of the center column, so that the detection accuracy is effectively improved. In the use process, the detection of differential housings of various models can be realized by only replacing the accessories according to the model of the differential housing to be detected, the tool versatility is improved, and the equipment cost and management cost are effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of differential housing detection technology, specifically a differential housing runout detection device. Background Technology

[0002] The differential housing is a critical component of the automotive transmission system. In automotive parts manufacturing, the runout of the differential housing is of paramount importance, and coordinate measuring machines (CMMs) have limitations in their measurement capabilities. The differential housing carries the planetary gear set, transmitting engine torque to the half-shafts to achieve differential speeds between the left and right wheels. The accuracy of the bearing mounting holes directly determines the quality of gear meshing. Excessive runout can lead to: abnormal bearing wear (vibration load increased by 300%), uneven gear loading (concentration of contact stress), and deterioration of the transmission system's NVH (noise increased by more than 15dB). The runout accuracy of the bearing mounting holes and end faces directly affects the smoothness of the differential assembly's operation, noise level, and service life.

[0003] For differential housing runout detection, it is necessary to design a device that can efficiently and accurately detect runout of assembled differential housings, differential half-shells, and flanged differential housings, reducing time and resource costs. At the same time, the testing equipment also needs a flexible and easily replaceable positioning structure, which can quickly locate different models of differential housings through simple operation, thereby improving testing efficiency.

[0004] To address the aforementioned issues, we propose a differential housing runout detection device. Utility Model Content

[0005] To address the problems in the background art, this utility model provides a differential housing runout detection device.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A differential housing runout detection device includes a base and a detection head. A support seat is provided at the upper center of the base, and a rotating seat is provided at the upper center of the support seat. The rotating seat is movably mounted at the upper center of the support seat via a rotary bearing. A central column is provided at the upper center of the rotating seat, and the central column is vertically mounted at the center point of the rotating seat. An inner expansion sleeve is provided at the bottom of the central column, and a tapered pressure block is provided at the upper end of the central column. The tapered pressure block is fitted onto the central column. The detection head is located on the right side of the central column and can be adjusted in height by a lifting assembly.

[0008] Preferably, the lifting assembly includes a lifting base, a support arm is installed at the middle of the left end of the lifting base, and the detection head is fixedly installed at the end of the support arm.

[0009] Preferably, the lifting assembly further includes a column, a sliding groove is provided on the left side of the column, a sliding block is slidably installed in the middle of the inner side of the sliding groove, and the sliding block is fixedly installed in the middle of the right end of the lifting seat.

[0010] Preferably, a lead screw is movably installed in the middle of the inner side of the slide groove, the sliding block is connected to the lead screw for transmission, a drive motor is connected to the bottom of the lead screw, and the drive motor is fixedly installed at the bottom of the column.

[0011] Preferably, a gasket is provided between the rotating seat and the support seat.

[0012] Preferably, a handle is provided at the middle of both ends of the rotating base.

[0013] Preferably, a control button is provided on the upper right side of the base.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In this solution, based on the center column, a positioning structure is formed by the use of tapered pressure blocks and inner expansion sleeves to achieve fast and efficient fixing and positioning of the differential housing, thereby effectively improving the accuracy and efficiency of the inspection work. Furthermore, during use, it is only necessary to change the parts according to the model of the differential housing to be inspected to achieve the inspection of various models of differential housing, which improves the versatility of tooling and effectively reduces equipment and management costs.

[0016] In this solution, operators can quickly position and install the differential housing through simple manual operation. The entire process is simple and fast. Compared with traditional coordinate measuring technology, which requires a lot of resources, this practical testing device can reduce the preparation time from 10 minutes to 3 minutes, greatly improving testing efficiency and meeting the rapid testing needs in large-scale production. Furthermore, the measurement values ​​of this testing device can better reflect the actual runout of the product compared with coordinate measuring machine, making it more convenient for users to assemble and use, and significantly improving the accuracy and reliability of the test results. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a side sectional view of the lifting component in this utility model.

[0019] In the diagram: 1. Base; 2. Support seat; 3. Rotary seat; 4. Rotary bearing; 5. Handle; 6. Shim; 7. Center column; 8. Inner expansion sleeve; 9. Tapered pressure block; 10. Detection head; 11. Support arm; 12. Lifting seat; 13. Column; 14. Slide groove; 15. Sliding block; 16. Lead screw; 17. Drive motor; 18. Control button. Detailed Implementation

[0020] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows:

[0021] Example: Refer to Figure 1 - Figure 2 As shown, a differential housing runout detection device of this embodiment includes a base 1 and a detection head 10. A support seat 2 is provided at the upper middle part of the base 1, and a rotating seat 3 is provided at the upper middle part of the support seat 2. The rotating seat 3 is movably mounted at the upper middle part of the support seat 2 via a rotating bearing 4. A central column 7 is provided at the upper middle part of the rotating seat 3. The central column 7 is vertically mounted at the center point of the rotating seat 3. An inner expansion sleeve 8 is provided at the bottom of the central column 7, and a tapered pressure block 9 is provided at the upper end of the central column 7. The tapered pressure block 9 is fitted on the central column 7. The detection head 10 is located on the right side of the central column 7 and is adjusted for height by a lifting assembly.

[0022] During use, the inner expansion sleeve 8 is mainly used to support and position the bearing mounting holes of the differential housing, limiting the radial direction of the differential housing. The center column 7 ensures that the upper and lower bearing mounting holes are coaxial and limits the axial direction of the differential housing, while the tapered pressure block 9 ensures the vertical stability of the differential housing. The tapered design can accommodate more product models and different sizes of bearing mounting hole inner diameters. The inner expansion sleeve 8, center column 7, and tapered pressure block 9 can be used to install, fix, and position the differential housing to be tested. Then, the rotating seat 3 drives the differential housing to rotate evenly, which facilitates the accurate testing by the testing head 10.

[0023] The test head 10 is mainly used to detect the runout value of the differential housing, with an accuracy of up to 0.001mm. In addition, in practical applications, the test head 10 needs to be electrically connected to a test gauge. The test gauge can record the values ​​detected by the test head 10. This test gauge uses existing mature equipment and will not be described in detail. After the test is completed, the staff only needs to read the value recorded by the test gauge to determine the quality of the differential housing.

[0024] The lifting assembly includes a lifting base 12, with a support arm 11 mounted on the middle of the left end of the lifting base 12. The detection head 10 is fixedly mounted on the end of the support arm 11. The lifting assembly also includes a column 13, with a slide groove 14 on the left side of the column 13. A sliding block 15 is slidably mounted on the middle of the inner side of the slide groove 14. The sliding block 15 is fixedly mounted on the middle of the right end of the lifting base 12. A lead screw 16 is movably mounted on the middle of the inner side of the slide groove 14. The sliding block 15 and the lead screw 16 are connected in a transmission connection. A drive motor 17 is connected to the bottom of the lead screw 16 and is fixedly mounted on the bottom of the column 13. Starting the drive motor 17 rotates the lead screw 16, thereby driving the sliding block 15 to move up and down, thus adjusting the position of the lifting base 12 and facilitating the movement and adjustment of the detection head 10 by the operator. When testing is required, the lifting seat 12 is lowered so that the testing head 10 is close to the differential housing to be tested. Conversely, after the test is completed, the lifting seat 12 is needed to raise the testing head 10 away so that the staff can easily disassemble the differential housing and the inspection tool.

[0025] In some examples, a shim 6 is provided between the rotating seat 3 and the support seat 2 to reduce friction between the rotating seat 3 and the support seat 2, and to ensure that the rotating seat 3 rotates normally.

[0026] In some examples, handles 5 are provided at the middle of both ends of the rotating base 3, so that the operator can rotate the rotating base 3 by turning the handles 5.

[0027] In some examples, a control button 18 is provided on the upper right side of the base 1 to control the forward and reverse rotation of the drive motor 17 to achieve lifting and adjusting movement.

[0028] In some examples, the main frame of this testing device is made of high-strength aluminum alloy and is fixedly installed at the bottom, achieving overall lightweight design.

[0029] The working principle of this utility model is as follows:

[0030] When testing is required, firstly, select the appropriate inner expansion sleeve 8 and tapered pressure block 9 according to the model of the differential housing to be tested. In use, first put the inner expansion sleeve 8 on the center column 7, then install the differential housing to be tested, and finally manually put the tapered pressure block 9 on the center column 7. The tapered pressure block 9 needs to fit with the bearing mounting hole of the differential housing. The inner expansion sleeve 8 and tapered pressure block 9 are used to ensure that the differential housing is installed firmly and positioned accurately.

[0031] Then, the lifting assembly is activated, and the drive motor 17 drives the lead screw 16 to rotate. Under the transmission force, the sliding block 15 drives the lifting seat 12 to move up and down, thereby adjusting the position of the test head 10. First, the test head 10 is adjusted to be close to the differential housing. Then, the support arm 11 is manually adjusted to make the probe of the test head 10 contact the differential housing. After the test head 10 is fixed, the operator can rotate the handle 5 to drive the rotating seat 3 to rotate at a constant speed. The check table connected to the test head 10 will record the pointer jump range when rotating one revolution. In order to ensure the accuracy of the test, the test can be repeated multiple times and the average value is taken. After the multiple tests are completed, the operator only needs to read the value recorded by the check table to judge the quality of the differential housing.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A differential housing runout detection device, characterized in that, Includes a base (1) and a detection head (10). A support seat (2) is provided at the upper middle part of the base (1), and a rotating seat (3) is provided at the upper middle part of the support seat (2). The rotating seat (3) is movably installed at the upper middle part of the support seat (2) via a rotating bearing (4). A central column (7) is provided at the upper middle part of the rotating seat (3). The central column (7) is vertically installed at the center point of the rotating seat (3). An inner expansion sleeve (8) is provided at the bottom of the central column (7). A tapered pressure block (9) is provided at the upper end of the central column (7). The tapered pressure block (9) is fitted on the central column (7). The detection head (10) is located on the right side of the central column (7) and is adjusted by lifting assembly.

2. The differential housing runout detection device according to claim 1, characterized in that, The lifting assembly includes a lifting seat (12), a support arm (11) is installed at the middle of the left end of the lifting seat (12), and the detection head (10) is fixedly installed at the end of the support arm (11).

3. The differential housing runout detection device according to claim 2, characterized in that, The lifting assembly also includes a column (13), a slide groove (14) is provided on the left side of the column (13), a sliding block (15) is slidably installed in the middle of the inner side of the slide groove (14), and the sliding block (15) is fixedly installed in the middle of the right end of the lifting seat (12).

4. The differential housing runout detection device according to claim 3, characterized in that, A lead screw (16) is movably installed in the middle of the inner side of the slide (14). The sliding block (15) is connected to the lead screw (16) for transmission. A drive motor (17) is connected to the bottom of the lead screw (16). The drive motor (17) is fixedly installed at the bottom of the column (13).

5. A differential housing runout detection device according to claim 4, characterized in that, A gasket (6) is provided between the rotating seat (3) and the support seat (2).

6. A differential housing runout detection device according to claim 5, characterized in that, The rotating base (3) has handles (5) at the middle of both ends.

7. A differential housing runout detection device according to claim 6, characterized in that, A control button (18) is provided on the upper right side of the base (1).

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