Automatic detection device for assembly of cross shaft oil seal

Abstract

The utility model relates to a cross shaft oil seal assembly automatic detection device, which comprises a clamping detection mechanism arranged on one side of a positioning disc and used for clamping two symmetrical ends of a cross shaft for detection, and further comprises the following components: the positioning disc which is provided with a positioning hole for positioning and fixing a bottom shaft body of the cross shaft; and the rotary driver is used for driving the positioning disc or the cross shaft to rotate in a stepping manner, and the angle of each stepping rotation is 45 degrees. According to the utility model, processing procedures can be obviously reduced, repeated dismounting of the cross shaft is avoided, detection can be completed at one time, and detection efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of oil seal testing technology, specifically to an automatic testing device for cross-shaped oil seals. Background Technology

[0002] Current cross shaft oil seal testing devices use a fixture to position the cross shaft, then use clamps (clamping and testing mechanisms) at both ends to clamp the symmetrical ends of the cross shaft. Force sensors or other sensors are used to detect whether the oil seal is installed correctly, such as clamping force or length. As long as the clamping force or length meets the standard for installing the oil seal, it is considered that the oil seal is installed correctly. Then the cross shaft is removed from the fixture, rotated, and tested again until the oil seals at all four ends of the cross shaft are tested. Although this method is simple to operate, it requires multiple disassemblies of the cross shaft, resulting in low testing efficiency.

[0003] Therefore, there is an urgent need for a cross-shaft oil seal equipped with an automatic detection device that can significantly improve processing efficiency in order to solve the problems existing in the current technology. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a cross-shaped oil seal with an automatic detection device.

[0005] To achieve the above-mentioned objectives, this utility model adopts the following technical solution: an automatic detection device for a cross shaft oil seal includes a clamping and detection mechanism disposed on one side of a positioning plate, used to clamp and detect the symmetrical ends of the cross shaft, and further includes:

[0006] The positioning plate is provided with positioning holes for positioning and fixing the bottom shaft of the cross shaft;

[0007] A rotary driver is used to drive the positioning disk or cross shaft to rotate in a stepping motion, with each step rotating 45°.

[0008] Furthermore, when the rotary driver drives the positioning disk to rotate step by step, the positioning disk has a square through hole inside, which communicates with the positioning hole, and the square through hole has symmetrically arranged clamping and fixing structures inside, which are used to clamp and fix the bottom shaft of the positioning disk inserted into the positioning hole.

[0009] Furthermore, the clamping and fixing structure includes an arc-shaped block and a linear actuator for driving the arc-shaped block to extend and retract.

[0010] Furthermore, the curved block is equipped with a flexible pad.

[0011] Furthermore, when the rotary driver drives the cross shaft to rotate, the output shaft of the rotary driver is provided with a positioning part, which is provided with a positioning groove corresponding to the positioning hole. The positioning groove can be inserted into the bottom shaft of the cross shaft, and the positioning groove is provided with a clamping deformation pad, which can achieve an interference fit with the bottom shaft of the cross shaft to fix the cross shaft.

[0012] Furthermore, the bottom surface of the positioning groove can contact the end face of the bottom shaft of the cross shaft.

[0013] Furthermore, the bottom surface of the positioning groove is provided with a magnetic attraction part, which can magnetically hold the bottom shaft of the cross shaft.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. Improve detection efficiency

[0016] Existing technologies require multiple disassemblies of the cross shaft to change its direction for inspection. However, this invention uses a rotary driver to drive the positioning disk or cross shaft to rotate in steps, with each step rotation angle being 45°. This allows for easy inspection of different ends of the cross shaft without the need for repeated disassembly and reassembly, greatly saving inspection time and significantly improving inspection efficiency.

[0017] 2. Enhance fixation stability

[0018] When the rotary driver drives the positioning disk to rotate step by step, the positioning disk has a square through hole and a symmetrical clamping and fixing structure inside. The bottom shaft of the cross shaft can be reliably clamped and fixed by the arc block and the linear driver. The flexible pad on the arc block can increase the friction and protect the shaft surface to prevent damage, so that the cross shaft remains stable during the detection process, which is conducive to improving the detection accuracy.

[0019] When the rotary driver drives the cross shaft to rotate, the positioning groove of the positioning part on the output shaft of the rotary driver is equipped with a clamping deformation pad, which can achieve an interference fit with the bottom shaft of the cross shaft, further ensuring that the cross shaft is firmly fixed. At the same time, the bottom surface of the positioning groove can contact the end face of the shaft and is equipped with a magnetic suction part, which can further enhance the fixing effect, ensure that the cross shaft will not be displaced or shaken during the testing process, and improve the accuracy of the testing results.

[0020] 3. Improve detection adaptability

[0021] This invention provides two driving rotation methods: one can drive the positioning disk to rotate, and the other can drive the cross shaft to rotate. The two methods can be flexibly selected according to actual testing needs and different cross shaft structural characteristics, which has stronger adaptability and versatility and can meet the needs of various production testing scenarios. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of one embodiment of the positioning disk of this utility model;

[0024] Figure 3 This is a schematic diagram of another embodiment of the positioning disc of this utility model.

[0025] In the figure, 1. Positioning plate; 2. Positioning hole; 3. Rotary actuator; 4. Clamping detection mechanism; 5. Square through hole; 6. Clamping fixing structure; 7. Arc block; 8. Linear actuator; 9. Flexible pad; 10. Positioning part; 11. Positioning groove; 12. Clamping deformation pad layer; 13. Magnetic suction part; 14. Cross shaft. Detailed Implementation

[0026] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0027] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "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 utility model 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, the above terms should not be construed as limitations on this utility model.

[0028] The cross shaft 14 mentioned in this utility model is mainly made of stainless steel or 45# steel or similar steel. It can be attracted by a magnet. It has four symmetrical shafts in the horizontal direction and requires the installation of oil seals. It also has shafts at the top and bottom and does not require the installation of oil seals. It is a special type of cross shaft and can also be called a six-axis shaft.

[0029] Example 1: As Figure 1-2 As shown, the rotary driver 3 drives the positioning disk 1 to rotate in steps.

[0030] 1. Device Structure

[0031] Positioning plate 1: Made of high-strength stainless steel, square in shape. Positioning plate 1 has a 25mm diameter positioning hole 2, which is used to tightly fit the bottom shaft of the cross shaft 14 for precise positioning. The square through hole 5 inside positioning plate 1 is 25mm × 25mm in size and communicates with the positioning hole 2. A clamping and fixing structure 6 is symmetrically arranged within the square through hole 5.

[0032] Clamping and fixing structure 6: The arc-shaped block 7 is made of nitrile rubber, which has good flexibility and wear resistance. The inner arc surface of the arc-shaped block 7 matches the outer contour of the bottom shaft of the cross shaft 14, which can effectively increase the contact area and improve clamping stability. The linear actuator 8 uses an SLS-100 electric actuator with a stroke of 50mm and a thrust of up to 1000N, which is sufficient to stably push the arc-shaped block 7 to clamp and fix the bottom shaft of the cross shaft 14.

[0033] Rotary driver 3: A stepper motor of model 57BYG250D is selected, paired with driver model SH-20403, which can precisely control the rotation angle of positioning disk 1. The stepper motor is connected to the central shaft of positioning disk 1 through a coupling to ensure stable power transmission, or it can drive positioning disk 1 to rotate through gear transmission. The transmission method is not limited here.

[0034] Clamping detection mechanism 4: The clamping detection mechanism 4 is installed on one side of the positioning plate 1. The clamping arm is made of aluminum alloy, which is lightweight and high-strength. A pressure sensor or distance sensor of model JLBS-100 is installed on the clamping arm to detect pressure changes or distance changes during oil seal installation, thereby determining whether the oil seal is installed in place. This is existing technology, and its structure and principle will not be described in detail in this utility model, nor has this utility model improved upon it.

[0035] 2. Work Process

[0036] Using a robotic arm or manually, insert the bottom shaft of the cross shaft 14 into the positioning hole 2 of the positioning plate 1. Activate the linear actuator 8, which pushes the arc-shaped block 7 towards the bottom shaft of the cross shaft 14 until the arc-shaped block 7 is tightly fitted against the shaft, thus completing the fixation of the cross shaft 14.

[0037] Start the rotary driver 3, and the positioning disk 1 rotates in 45° increments. Once the positioning disk 1 reaches the desired angle, the clamping arms of the clamping and detection mechanism 4 close, holding the symmetrical ends of the cross shaft. The pressure sensor then activates to detect whether the oil seal is properly installed. After the detection is complete, the clamping arms unfold, and the positioning disk 1 continues to rotate 45° for the next round of detection. This process is repeated until the oil seals at all four ends of the cross shaft are detected, at which point the cross shaft 14 can be removed.

[0038] Example 2: Figure 1and 3 As shown, the rotary driver 3 drives the cross shaft 14 to rotate in steps.

[0039] 1. Device Structure

[0040] Positioning disc 1: Positioning disc 1 is rectangular or circular, made of engineering plastic, lightweight and with a certain degree of insulation. The positioning hole 2 on positioning disc 1 has a diameter of 22mm, which is adapted to the bottom shaft of cross shaft 14.

[0041] Rotary driver 3: A stepper motor of model 86BYG350C is selected, which has a large output torque and can stably drive the cross shaft 14 to rotate. A positioning part 10 is installed on the output shaft of the rotary driver 3. The positioning part 10 is cylindrical, with a diameter of 40mm and a length of 60mm. A positioning groove 11 corresponding to the positioning hole 2 is opened on the positioning part 10. The positioning groove 11 is 24mm wide and 30mm deep, which can fit precisely into the bottom shaft of the cross shaft 14.

[0042] Clamping deformation pad 12: A 2mm thick rubber pad is pasted inside the positioning groove 11 as a clamping deformation pad 12. The rubber pad has good elasticity and friction, which can achieve an interference fit with the bottom shaft of the cross shaft 14, ensuring that the cross shaft 14 will not loosen during rotation.

[0043] Magnetic suction part 13: Several neodymium iron boron magnets are installed on the bottom surface of the positioning groove 11 as magnetic suction part 13. The magnetic force of the magnets can firmly attract the bottom shaft of the cross shaft 14, further enhancing the fixing effect.

[0044] Clamping detection mechanism 4: Similar to Embodiment 1, clamping detection mechanism 4 is located on one side of positioning plate 1 and consists of clamping arm and pressure sensor or distance sensor, used to detect the oil seal installation status.

[0045] 2. Work Process

[0046] Using a robotic arm or manually, the bottom shaft of the cross shaft 14 is placed into the positioning groove 11 of the positioning part 10 on the output shaft of the rotary driver 3. The rubber pad (clamping deformation pad 12) deforms and fits tightly against the shaft, achieving an interference fit. At the same time, the magnet of the magnetic suction part 13 attracts the shaft, further fixing the cross shaft.

[0047] Start the rotary drive 3, and the cross shaft 14 rotates in 45° increments. Once the cross shaft 14 has rotated to the appropriate angle, the clamping and testing mechanism 4 operates to test the oil seals at both symmetrical ends of the cross shaft 14. After the test is completed, the cross shaft 14 continues to rotate 45° for the next round of testing, until the oil seals at all four ends are tested.

[0048] The parts of this utility model not described in detail are existing technologies, therefore, this utility model does not describe them in detail.

[0049] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0050] Although this document uses a considerable amount of technical terminology, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

[0051] This utility model is not limited to the above-described preferred embodiment. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made to their shape or structure, any technical solution that is the same as or similar to this utility model falls within the protection scope of this utility model.

Claims

1. An automatic detection device for a cross-shaped oil seal, comprising a clamping and detection mechanism disposed on one side of a positioning plate, for clamping and detecting the symmetrical ends of the cross-shaped shaft, characterized in that, Also includes: The positioning plate is provided with positioning holes for positioning and fixing the bottom shaft of the cross shaft; A rotary driver is used to drive the positioning disk or the cross shaft to rotate in a stepping motion, with each step rotation angle being 45°.

2. The automatic detection device for a cross-shaped oil seal according to claim 1, characterized in that, When the rotary driver drives the positioning disk to rotate step by step, the positioning disk has a square through hole inside, which communicates with the positioning hole, and the square through hole has symmetrically arranged clamping and fixing structures inside, which are used to clamp and fix the bottom shaft of the positioning disk inserted into the positioning hole.

3. The cross-shaped oil seal with automatic detection device according to claim 2, characterized in that, The clamping and fixing structure includes an arc-shaped block and a linear actuator for driving the arc-shaped block to extend and retract.

4. The cross shaft oil seal with automatic detection device according to claim 3, characterized in that, The arc-shaped block is provided with a flexible pad.

5. The cross-shaped oil seal with automatic detection device according to claim 1, characterized in that, When the rotary driver drives the cross shaft to rotate in a stepping motion, the output shaft of the rotary driver is provided with a positioning part, which is provided with a positioning groove corresponding to the positioning hole. The positioning groove can be inserted into the bottom shaft of the cross shaft, and a clamping deformation pad is provided in the positioning groove to achieve an interference fit with the bottom shaft of the cross shaft to fix the cross shaft.

6. The cross-shaped oil seal with automatic detection device according to claim 5, characterized in that, The bottom surface of the positioning groove can contact the end face of the bottom shaft of the cross shaft.

7. The cross-shaped oil seal with automatic detection device according to claim 6, characterized in that, The bottom surface of the positioning groove is provided with a magnetic suction part, which can magnetically hold the bottom shaft of the cross shaft.

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