Follow-up grinding device for shaft neck of universal joint cross shaft

Abstract

The invention belongs to the technical field of cross shaft machining, and particularly relates to a universal joint cross shaft journal follow-up grinding device which comprises a base, a mounting plate is fixedly connected to the upper end of the base, a mechanical arm is mounted at the rear end of the base and used for clamping a cross shaft for feeding and discharging, and a grinding adjusting assembly is arranged in an inner cavity of the mounting plate and used for grinding the cross shaft. The problems that an existing grinding device is difficult to grind four shaft necks of a cross shaft at the same time, so that the grinding efficiency of the cross shaft is low, and when the shaft necks of the cross shaft are ground, due to the fact that the grinding operation of a grinding roller on the shaft necks is difficult to adjust according to the cross shafts of different models, the grinding efficiency is low are solved. And therefore, the grinding work of the shaft neck of the cross shaft can be completed by multiple times of grinding, and the grinding machining efficiency of the cross shaft is further reduced.

Description

Technical Field

[0001] This invention belongs to the field of cross shaft machining technology, specifically a follow-up grinding device for universal joint cross shaft journals. Background Technology

[0002] A cross-type universal joint consists of a cross shaft connecting two universal joint forks. It is a typical non-constant velocity universal joint that transmits power through the cross shaft structure and allows for changes in the included angle between the two drive shafts. It is the "joint" component of the universal joint of the automotive drive system. Before leaving the factory, the four adjacent journals of the cross shaft need to be ground using a grinding machine to facilitate the later assembly of needle roller bearings.

[0003] A patent with announcement number CN111421403B discloses a fully automatic cross-axis cylindrical grinding machine that grinds four parts at once. The device, through the coordination of a feeding mechanism, a first feeding mechanical claw, a second feeding mechanical claw, a frame, a cross-axis conveying mechanism, a discharge carriage, a grinding device, and a swing correction mechanism, etc., allows the first feeding mechanical claw to sequentially transport the cross-axis from the output end of the conveyor belt to the first support fork. The second feeding mechanical claw is used to transport multiple cross-axis to be processed on the first support fork to the grinding device, or to transport the processed cross-axis to the second support fork. This enables multiple cross-axis to be fed and ground simultaneously, thereby improving production efficiency. The cross shaft conveying mechanism has two conveying stations. The first support fork provides the cross shaft to be processed to the second feeding mechanical claw, and the second support fork receives the cross shaft after grinding. Through the reversing mechanism in the first support fork, the cross shaft after one grinding can be reversed, and the reversed cross shaft can be ground again, realizing the grinding of the outer diameter of four shafts in one feeding. Through the unloading mechanism in the second support fork, the ground cross shaft can be pushed upward and fall into the unloading chute for automatic discharge, realizing automatic unloading.

[0004] In practical application, the above scheme involves a first mechanical gripper feeding the cross shaft to a first fork, a second mechanical gripper feeding the cross shaft to be processed from the first fork into a grinding device for processing, or feeding the processed cross shaft to a second fork. The first fork provides the cross shaft to be processed to the second mechanical gripper, and the second fork receives the ground cross shaft. Moreover, through a reversing mechanism within the first fork, the cross shaft after one grinding can be reversed to grind the other two journals again. However, this grinding method is difficult to perform grinding on all four journals of the cross shaft simultaneously, resulting in low grinding efficiency. Furthermore, when grinding the journals of the cross shaft, if grinding a cross shaft with a long journal, it is difficult to adjust the grinding position of the grinding roller on the journal, requiring multiple grinding operations to complete the grinding work of the cross shaft journal, thus further reducing the grinding efficiency of the cross shaft.

[0005] Therefore, the present invention provides a follow-up grinding device for the universal joint cross shaft journal. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: the universal joint cross shaft journal of the present invention includes a base, an mounting plate is fixedly connected to the upper end of the base, a mechanical arm is installed at the rear end of the base, and the mechanical arm is used to clamp the cross shaft for loading and unloading. The inner cavity of the mounting plate is provided with a grinding adjustment component. The grinding adjustment assembly includes a rotating disk rotatably connected to the inner cavity of the mounting plate. The upper end of the rotating disk has four arc-shaped grooves, and each arc-shaped groove is slidably connected to a sliding column. An L-shaped frame is installed on the upper end of the sliding column, and an adaptive grinding assembly is provided at one end of the L-shaped frame. Furthermore, the adaptive grinding assembly includes an annular fixed frame installed at one end of the L-shaped frame. A disc is rotatably connected to the inner cavity of the annular fixed frame. Two cross grooves are opened on one side of the disc, and a cross block is slidably connected to the inner cavity of each of the two cross grooves. A drive shaft is rotatably connected inside the cross block, and a grinding column is installed outside the drive shaft.

[0008] Preferably, the upper end of the base is provided with a liquid storage tank, the bottom of the inner cavity of the liquid storage tank is provided with a through-hole, the lower end of the base is fixedly connected to the through-hole with a drain pipe, and a tension spring is fixedly connected to the inner wall of the cross slide groove, with one end of the tension spring fixedly connected to the cross block.

[0009] Preferably, a rotating column is installed at the lower end of the mounting plate, a servo motor is installed at the lower end of the base, and the output shaft of the servo motor is inserted into the rotating column. A collection groove is provided at the upper end of the mounting plate, and a limit frame is installed at the lower end of the mounting plate. The lower end of the limit frame has four through slots for limiting the sliding direction of the sliding column, so that the sliding column cannot rotate in the cavity of the through slot and can slide smoothly.

[0010] Preferably, the upper end of the rotating column is provided with a storage groove, the inner cavity of the storage groove is equipped with a first spring, and a T-shaped bracket is rotatably connected to the upper end of the mounting plate, with one end of the T-shaped bracket abutting against the first spring.

[0011] Preferably, two scraper rods are fixed to the outside of the rotating column, and the scraper rods are arranged in an S-shape to scrape the clean water or polishing liquid in the inner cavity of the storage tank for recycling.

[0012] Preferably, a synchronous motor is installed in the inner cavity of one end of the L-shaped frame, and the output shaft of the synchronous motor passes through the L-shaped frame and is fixedly installed with the adaptive grinding assembly.

[0013] Preferably, a mounting bracket is fixedly connected to the upper end of the L-shaped frame, one end of the mounting bracket is fixedly installed to the annular fixing bracket, a triangular bracket is installed on one side of the disc, and one end of the triangular bracket is fixedly installed to the output shaft end of the synchronous motor.

[0014] Preferably, a toothed ring is fixedly connected to one side of the annular fixing frame, a driven pulley is fixedly connected to one end of the transmission shaft, a transmission pulley is rotatably connected to one side of the disc, a belt is internally connected to the transmission pulley, and the belt is connected to the driven pulley.

[0015] Preferably, a groove is provided on one side of the disc, a fixed post is fixedly connected to the inner cavity of the groove, a slider is slidably connected to the outside of the fixed post, a limit pulley is rotatably connected to one end of the slider, and the limit pulley is connected to the belt drive.

[0016] Preferably, a second spring is fixedly connected to one end of the inner cavity of the groove, and one end of the second spring is fixedly connected to the slider. A gear is fixedly connected to one end of the transmission pulley, and the gear meshes with the gear ring.

[0017] The beneficial effects of this invention are as follows: 1. The universal joint cross shaft journal follow-up grinding device of the present invention uses a robotic arm to clamp the cross shaft and simultaneously drive a rotating disk to rotate. The rotating disk moves the sliding column in opposite directions through an arc groove, which drives the L-shaped frame to push the annular fixed frame and the disk to move synchronously. The disk uses the cross block to drive the transmission shaft, so that the grinding column slides to the outside of the cross shaft journal. It can grind four journals at the same time, improving processing efficiency. When grinding journals of different coarseness, the transmission shaft drives the grinding column to move closer to the cross shaft, and the journal pushes the grinding column away. The grinding column drives the transmission shaft and the cross block to slide in the cross groove, which facilitates the adjustment of the spacing of the grinding column. Then, the disk is driven to rotate, and the disk drives the cross block. The cross block causes the grinding column to rotate around the journal in an annular shape through the transmission shaft, so as to grind and polish the journal. It can grind and process cross shaft journals of different models.

[0018] 2. The universal joint cross shaft journal follower grinding device of the present invention uses a synchronous motor to drive a triangular bracket to rotate a disc. The disc drives the cross block to rotate via a cross groove. Then, a transmission shaft drives a grinding column to rotate in a ring around the cross shaft journal, thereby grinding the cross shaft journal. During the rotation of the disc, a transmission pulley drives a gear to rotate synchronously. The gear meshes with a gear ring and rotates. At the same time, the gear drives the transmission pulley to rotate, which in turn drives the belt to rotate. The belt then drives the driven pulley to rotate the transmission shaft. Finally, the transmission shaft drives the grinding column to rotate. In this way, when the disc drives the grinding column to rotate in a ring around the cross shaft journal for grinding, it can drive the grinding column to rotate on its own axis, thereby improving the grinding efficiency of the cross shaft journal and avoiding repeated friction between the grinding column and the cross shaft journal in a fixed area, thus extending the service life of the grinding column. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of the main view of the present invention; Figure 2 This is a bottom view of the grinding device of the present invention; Figure 3 This is a schematic diagram of the assembly structure of the limiting frame of the present invention; Figure 4 This is a schematic diagram of the assembly structure of the rotating disk of the present invention; Figure 5 This is a half-sectional structural diagram of the base of the present invention; Figure 6 This is a partial cross-sectional structural diagram of the base of the present invention; Figure 7 This is a schematic diagram of the installation structure of the scraper rod of the present invention; Figure 8 This is a schematic diagram of the assembly structure of the gear of the present invention; Figure 9 This is a half-sectional structural diagram of the annular fixing frame of the present invention; Figure 10 This is a schematic diagram of a half-section of the disk of the present invention; Figure 11 This is a schematic diagram of the overall structure of the adaptive polishing component of the present invention; In the diagram: 1. Base; 2. Mounting plate; 3. Robotic arm; 4. Collection tank; 5. Grinding adjustment assembly; 51. Rotary disk; 52. Sliding column; 53. Rotating column; 54. T-shaped bracket; 55. L-shaped bracket; 56. Synchronous motor; 57. Scraper; 58. First spring; 59. Storage tank; 6. Servo motor; 7. Drain pipe; 8. Cross shaft; 9. Adaptive grinding assembly; 91. Mounting bracket; 92. Circular fixing bracket; 93. 94. Gear ring; 95. Disc; 96. Cross slide groove; 97. Cross block; 98. Grinding post; 99. Triangular bracket; 90. Tension spring; 910. Driven pulley; 911. Drive shaft; 912. Limit pulley; 913. Slider; 914. Groove; 915. Fixed post; 916. Second spring; 917. Belt; 918. Drive pulley; 919. Gear; 10. Liquid reservoir; 11. Limit bracket; 12. Through port. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] Example 1, as Figure 1As shown in the embodiment of the present invention, a follow-up grinding device for a universal joint cross shaft journal includes a base 1, an mounting plate 2 fixedly connected to the upper end of the base 1, a robotic arm 3 installed at the rear end of the base 1, and the robotic arm 3 is used to clamp the cross shaft 8 for loading and unloading. A grinding adjustment component 5 is provided in the inner cavity of the mounting plate 2. like Figure 5 and Figure 6 As shown, the grinding adjustment component 5 includes a rotating disk 51 rotatably connected in the inner cavity of the mounting plate 2. The upper end of the rotating disk 51 is provided with four arc-shaped grooves, and each arc-shaped groove is slidably connected with a sliding column 52. An L-shaped frame 55 is installed on the upper end of the sliding column 52, and an adaptive grinding component 9 is provided at one end of the L-shaped frame 55. like Figure 9 As shown, the adaptive grinding assembly 9 includes an annular fixed frame 92 installed at one end of the L-shaped frame 55. A disc 94 is rotatably connected to the inner cavity of the annular fixed frame 92. Two cross grooves 95 are opened on one side of the disc 94, and cross blocks 96 are slidably connected to the inner cavity of each of the two cross grooves 95. A drive shaft 911 is rotatably connected inside the cross block 96, and a grinding column 97 is installed on the outside of the drive shaft 911.

[0023] Specifically, in existing technologies, a robotic arm typically grips the cross shaft and places it between two grinding rollers. Simultaneously, the grinding rollers rotate to grind the two journals of the cross shaft. After the two journals are ground, the robotic arm grips the cross shaft onto a bracket, then adjusts the gripping angle, grips the cross shaft again, and moves it between the grinding rollers to grind the other two journals. However, this grinding method is inefficient because it is difficult to grind all four journals of the cross shaft simultaneously. Furthermore, when grinding the journals, it is difficult to adjust the grinding rollers' operation according to different cross shaft models, requiring multiple grinding operations to complete the grinding of the journals, further reducing the grinding efficiency of the cross shaft.

[0024] In this invention, when grinding the journal of the cross shaft 8, the robotic arm 3 grips the cross shaft 8 for loading, simultaneously driving the rotating disk 51 to rotate. The rotating disk 51 uses an arc-shaped groove to move the sliding columns 52 closer together, causing the sliding columns 52 to move the L-shaped frame 55 synchronously. This, in turn, causes the L-shaped frame 55 to move the annular fixing frame 92. As the annular fixing frame 92 moves synchronously with the L-shaped frame 55, it drives the disc 94 to move, which in turn uses the cross block 96 to drive the transmission shaft 911 synchronously. This causes the transmission shaft 911 to slide the grinding column 97 to the outside of the journal of the cross shaft 8. This allows for grinding and polishing of cross shafts 8 of different sizes, and enables simultaneous grinding of all four journals of the cross shaft 8. To improve the grinding efficiency of the journal of the cross shaft 8, when grinding journals of the cross shaft 8 of different thicknesses, the transmission shaft 911 drives the grinding column 97 to approach the cross shaft 8, and the journal of the cross shaft 8 pushes the grinding column 97 away from each other. The grinding column 97 drives the transmission shaft 911 to move synchronously. At the same time, the transmission shaft 911 drives the cross block 96 to slide in the inner cavity of the cross groove 95, which facilitates the adjustment of the distance between the two grinding columns 97 according to the different thicknesses of the cross shaft 8 journals. Then, the disk 94 is driven to rotate, and the disk 94 drives the cross block 96 to rotate. At the same time, the cross block 96 drives the grinding column 97 to rotate through the transmission shaft 911. Thus, during the rotation of the grinding column 97, the journal of the cross shaft 8 is ground and polished, thereby solving the above problems.

[0025] like Figure 5 and Figure 7 As shown, a liquid storage tank 10 is provided at the upper end of the base 1, and a through-hole 12 is provided at the bottom of the inner cavity of the liquid storage tank 10. A drain pipe 7 is fixedly connected to the lower end of the base 1 at the through-hole 12. A tension spring 99 is fixedly connected to the inner wall of the cross slide 95, and one end of the tension spring 99 is fixedly connected to the cross block 96.

[0026] Specifically, during the grinding process of the journal of the cross shaft 8, clean water or polishing fluid is discharged into the grinding column 97 and the journal of the cross shaft 8 to improve the grinding efficiency of the journal of the cross shaft 8. The waste liquid generated is discharged into the storage tank 10, and a filter screen can be pre-installed in the inner cavity of the storage tank 10 to filter the waste liquid flowing into the storage tank 10. Then, the waste liquid flows into the drain pipe 7 through the outlet 12 and is recycled and discharged between the grinding column 97 and the cross shaft 8 for recycling, thereby improving the recycling rate of clean water or polishing fluid.

[0027] like Figures 5 to 7As shown, a rotating column 53 is installed at the lower end of the mounting plate 2, and a servo motor 6 is installed at the lower end of the base 1. The output shaft of the servo motor 6 is plugged into the rotating column 53. A collection groove 4 is provided at the upper end of the mounting plate 2, and a limit frame 11 is installed at the lower end of the mounting plate 2. The limit frame 11 has four through grooves at the lower end to limit the sliding direction of the sliding column 52, so that the sliding column 52 cannot rotate in the cavity of the through groove and can slide smoothly. A storage groove 59 is provided at the upper end of the rotating column 53. A first spring 58 is installed in the cavity of the storage groove 59. A T-shaped bracket 54 is rotatably connected to the upper end of the mounting plate 2, and one end of the T-shaped bracket 54 abuts against the first spring 58. Two scraper rods 57 are fixed to the outside of the rotating column 53. The scraper rods 57 are S-shaped and are used to scrape the clean water or polishing liquid in the cavity of the liquid storage tank 10 for recycling.

[0028] Specifically, the robotic arm 3 grips the cross shaft 8 and brings it into contact with the T-shaped bracket 54. Simultaneously, the cross shaft 8 presses down on the T-shaped bracket 54, causing it to slide into the inner cavity of the receiving groove 59 by squeezing the first spring 58. This allows the position of the cross shaft 8 pressing the T-shaped bracket 54 to be adjusted according to different models. Then, the servo motor 6 is activated, driving the rotating column 53 to rotate, which in turn drives the rotating disk 51 to rotate. Simultaneously, the rotating disk 51 uses an arc-shaped groove to move the sliding columns 52 closer together, allowing them to slide smoothly within the through-groove cavity at the lower end of the limiting frame 11. Furthermore, the sliding columns 52 are prevented from rotating during this sliding process, causing the sliding columns 52 to move synchronously with the L-shaped frame 55. The L-shaped frame 55 then moves the adaptive grinding assembly 9 closer to the journal of the cross shaft 8. Then, the journal of the cross shaft 8 is ground by the adaptive grinding component 9, which can then perform grinding processing on different models of cross shaft 8. During the rotation of the rotating column 53 driven by the servo motor 6, the rotating column 53 will drive the scraper 57 to rotate synchronously. The scraper 57 is S-shaped, which can push the waste liquid in the middle of the inner cavity of the liquid storage tank 10 to the surrounding area during the rotation of the scraper 57. This pushes the waste liquid through the outlet 12 into the drain pipe 7 for recycling, so as to improve the recycling rate of waste liquid. This solves the problem that the existing universal joint cross shaft journal follow-up grinding device is difficult to adjust the grinding mechanism for different models of cross shafts when grinding the journal, so that the grinding mechanism fits the journal of the cross shaft for grinding, making it difficult for the grinding device to adapt to different models of cross shafts.

[0029] Example 2, as Figure 1 and Figure 6 As shown, a synchronous motor 56 is installed in the inner cavity of one end of the L-shaped frame 55, and the output shaft of the synchronous motor 56 passes through the L-shaped frame 55 and is fixedly installed with the adaptive grinding assembly 9.

[0030] Specifically, after the L-shaped frame 55 drives the adaptive grinding assembly 9 to fit against the journal of the cross shaft 8, the synchronous motor 56 is started and driven to rotate, so that the adaptive grinding assembly 9 performs grinding on the journal of the cross shaft 8, thereby improving the grinding efficiency of the cross shaft 8.

[0031] like Figures 8 to 10 As shown, an mounting bracket 91 is fixedly connected to the upper end of the L-shaped frame 55. One end of the mounting bracket 91 is fixedly installed to the annular fixed frame 92. A triangular bracket 98 is installed on one side of the disc 94. One end of the triangular bracket 98 is fixedly installed to the output shaft end of the synchronous motor 56. A gear ring 93 is fixedly connected to one side of the annular fixed frame 92. A driven pulley 910 is fixedly connected to one end of the drive shaft 911. A drive pulley 918 is rotatably connected to one side of the disc 94. A belt 917 is internally connected to the drive pulley 918, and the belt 917 is connected to the driven pulley 910.

[0032] Specifically, after the grinding column 97 moves to the outside of the four journals of the cross shaft 8, the synchronous motor 56 drives the triangular bracket 98 to rotate, which in turn drives the disc 94 to rotate. Simultaneously, the disc 94 uses the cross groove 95 to drive the cross block 96 to rotate, which in turn drives the grinding column 97 to rotate in a ring around the journals of the cross shaft 8 via the transmission shaft 911, thus grinding the journals of the cross shaft 8. During the rotation of the disc 94, it drives the transmission pulley 918 to rotate, which in turn drives the gear 919 to rotate synchronously. As the gear 919 rotates with the disc 94 via the transmission pulley 918, it meshes with the gear ring 93, simultaneously driving the transmission pulley 918 to rotate, which in turn drives the belt 917 to rotate. The belt 917 then drives the driven pulley 910 to rotate, which in turn drives the transmission shaft 911. The drive shaft 911 then rotates the grinding column 97, allowing the grinding column 97 to rotate on its own axis while the disc 94 drives the grinding column 97 to rotate in a ring around the journal of the cross shaft 8. This improves the grinding efficiency of the cross shaft 8 journal and avoids repeated friction between the grinding column 97 and the journal of the cross shaft 8 using a fixed area, thus reducing the service life of the grinding column 97. This solves the problem of existing universal joint cross shaft journal follow-up grinding devices, which generally drive the grinding roller to rotate in a ring around the journal of the cross shaft to grind the journal. However, the grinding roller does not rotate on its own axis, which means that the grinding roller always uses a fixed surface to perform ring grinding around the journal of the cross shaft. Long-term cyclic processing of the cross shaft will reduce the service life of the grinding roller and also reduce the grinding effect of the grinding roller on the journal of the cross shaft, thus reducing the grinding efficiency of the cross shaft.

[0033] like Figures 9 to 11As shown, a groove 914 is provided on one side of the disc 94. A fixed post 915 is fixedly connected to the inner cavity of the groove 914. A slider 913 is slidably connected to the outside of the fixed post 915. A limit pulley 912 is rotatably connected to one end of the slider 913, and the limit pulley 912 is connected to the belt 917 for transmission. A second spring 916 is fixedly connected to one end of the inner cavity of the groove 914. One end of the second spring 916 is fixedly connected to the slider 913. A gear 919 is fixedly connected to one end of the transmission pulley 918. The gear 919 is meshed with the gear ring 93.

[0034] Specifically, when the grinding column 97 moves to the outside of the journal of the cross shaft 8, the journal of the cross shaft 8 pushes the grinding column 97 away from each other, causing the grinding column 97 to drive the transmission shaft 911 to move synchronously. The transmission shaft 911 then drives the cross block 96 to pull the tension spring 99 to slide within the cross groove 95. Simultaneously, the return force of the tension spring 99 pulls the cross block 96 to move and reset, causing the cross block 96 to drive the transmission shaft 911 to move synchronously. This ensures that the grinding column 97 remains in close contact with the journal surface of the cross shaft 8, thereby improving the grinding efficiency of the journal of the cross shaft 8. Then, during the rotation of the driven belt 910 driven by the drive belt 917 of the drive transmission pulley 918, the second spring 91... 6. The pop-up slider 913 moves upward, causing the slider 913 to drive the limit pulley 912 to move synchronously. This causes the limit pulley 912 to squeeze the belt 917, thereby increasing the tension of the belt 917. The belt 917 can effectively drive the driven pulley 910 to drive the drive shaft 911 to rotate, and the drive shaft 911 drives the grinding column 97 to rotate to grind the journal of the cross shaft 8. This solves the problem that the existing universal joint cross shaft journal follow-up grinding device is difficult to control when grinding different types of cross shaft journals. It is difficult to keep the grinding roller always in contact with the cross shaft journal surface, which makes it difficult to grind the cross shaft journal evenly when the grinding roller rotates, thus affecting the grinding effect of the cross shaft journal.

[0035] Working principle: The journal of the cross shaft 8 pushes the grinding column 97 to move away from each other, so that the grinding column 97 drives the transmission shaft 911 to move synchronously, and the transmission shaft 911 drives the cross block 96 to pull the tension spring 99 to slide in the inner cavity of the cross groove 95. At the same time, the return force of the tension spring 99 pulls the cross block 96 to move and reset, and the cross block 96 drives the transmission shaft 911 to move synchronously, thereby ensuring that the grinding column 97 is always in close contact with the journal surface of the cross shaft 8. After the grinding column 97 moves to the outside of the four journals of the cross shaft 8, the synchronous motor 56 drives the triangular bracket 98 to rotate, which in turn drives the disc 94 to rotate. Simultaneously, the disc 94 uses the cross groove 95 to drive the cross block 96 to rotate, which in turn uses the transmission shaft 911 to drive the grinding column 97 to rotate in a ring around the journals of the cross shaft 8, thus grinding the journals of the cross shaft 8. During the rotation of the disc 94, the disc 94 drives the transmission pulley 918 to rotate, which in turn drives the gear 919 to rotate synchronously. As the gear 919 rotates with the disc 94 via the transmission pulley 918... Gear 919 meshes with gear ring 93 for transmission. At the same time, gear 919 drives transmission pulley 918 to rotate, which in turn drives belt 917 to rotate. Belt 917 drives driven pulley 910 to rotate drive shaft 911, which in turn drives grinding column 97 to rotate. This allows grinding column 97 to rotate on its own axis while the disc 94 drives grinding column 97 to rotate in a ring around the journal of cross shaft 8 for grinding. This improves the grinding efficiency of cross shaft 8 journal and avoids repeated friction between grinding column 97 and cross shaft 8 journal in a fixed area, which would reduce the service life of grinding column 97. When grinding different models of cross shafts 8, the robotic arm 3 clamps the cross shaft 8 and makes it abut against the T-shaped bracket 54. At the same time, the cross shaft 8 presses the T-shaped bracket 54 downward, causing the T-shaped bracket 54 to squeeze the first spring 58 and slide into the inner cavity of the receiving groove 59. This allows the position of the cross shaft 8 pressing the T-shaped bracket 54 to be adjusted according to different models. Then, the servo motor 6 is started to drive the rotating column 53 to rotate, which in turn drives the rotating disk 51 to rotate. At the same time, the rotating disk 51 uses the arc groove to move the sliding columns 52 closer to each other, so that the sliding columns 52 slide smoothly in the through groove cavity at the lower end of the limit frame 11. The sliding columns 52 are controlled to move smoothly. 2. During the sliding process, rotation is impossible, which causes the sliding column 52 to drive the L-shaped frame 55 to move synchronously. The L-shaped frame 55 then drives the adaptive grinding component 9 to approach the journal of the cross shaft 8. The adaptive grinding component 9 then grinds the journal of the cross shaft 8, thus enabling grinding processing for different models of cross shaft 8. During the rotation of the rotating column 53 driven by the servo motor 6, the rotating column 53 will drive the scraper 57 to rotate synchronously. The scraper 57 is S-shaped, which can push the waste liquid in the middle of the inner cavity of the liquid storage tank 10 to the surrounding area during the rotation of the scraper 57. This pushes the waste liquid through the outlet 12 into the drain pipe 7 for recycling, thereby improving the recycling rate of waste liquid.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A follow-up grinding device for a universal joint cross shaft journal, characterized in that: Includes a base (1), with a mounting plate (2) fixedly connected to the upper end of the base (1), and a robotic arm (3) installed at the rear end of the base (1). The robotic arm (3) is used to clamp the cross shaft (8) for loading and unloading. A grinding adjustment component (5) is provided in the inner cavity of the mounting plate (2). The grinding adjustment component (5) includes a rotating disk (51) rotatably connected in the inner cavity of the mounting plate (2). The upper end of the rotating disk (51) is provided with four arc-shaped grooves, and each arc-shaped groove is slidably connected with a sliding column (52). An L-shaped frame (55) is installed on the upper end of the sliding column (52), and an adaptive grinding component (9) is provided at one end of the L-shaped frame (55). The adaptive grinding assembly (9) includes an annular fixed frame (92) installed at one end of an L-shaped frame (55). A disc (94) is rotatably connected to the inner cavity of the annular fixed frame (92). Two cross grooves (95) are opened on one side of the disc (94), and cross blocks (96) are slidably connected to the inner cavities of the two cross grooves (95). A drive shaft (911) is rotatably connected inside the cross block (96), and a grinding column (97) is installed outside the drive shaft (911).

2. The follow-up grinding device for a universal joint cross shaft journal according to claim 1, characterized in that: The upper end of the base (1) is provided with a liquid storage tank (10), the bottom of the inner cavity of the liquid storage tank (10) is provided with a through-hole (12), the lower end of the base (1) is fixedly connected to the through-hole (12) with a drain pipe (7), the inner wall of the cross slide (95) is fixedly connected with a tension spring (99), and one end of the tension spring (99) is fixedly connected to the cross block (96).

3. The follow-up grinding device for a universal joint cross shaft journal according to claim 1, characterized in that: The mounting plate (2) is equipped with a rotating column (53) at its lower end, and a servo motor (6) is installed at the lower end of the base (1). The output shaft of the servo motor (6) is plugged into the rotating column (53). The mounting plate (2) is provided with a collection groove (4) at its upper end, and a limit frame (11) is installed at the lower end of the mounting plate (2). The limit frame (11) is provided with four through grooves at its lower end to limit the sliding direction of the sliding column (52), so that the sliding column (52) cannot rotate in the cavity of the through groove and can slide smoothly.

4. The follow-up grinding device for a universal joint cross shaft journal according to claim 3, characterized in that: The upper end of the rotating column (53) is provided with a storage groove (59), and a first spring (58) is installed in the inner cavity of the storage groove (59). A T-shaped bracket (54) is rotatably connected to the upper end of the mounting plate (2), and one end of the T-shaped bracket (54) abuts against the first spring (58).

5. The follow-up grinding device for a universal joint cross shaft journal according to claim 4, characterized in that: Two scraper rods (57) are fixed to the outside of the rotating column (53), and the scraper rods (57) are arranged in an S-shape to scrape the clean water or polishing liquid in the inner cavity of the liquid storage tank (10) for recycling.

6. The follow-up grinding device for a universal joint cross shaft journal according to claim 4, characterized in that: A synchronous motor (56) is installed in the inner cavity of one end of the L-shaped frame (55), and the output shaft end of the synchronous motor (56) passes through the L-shaped frame (55) and is fixedly installed with the adaptive grinding assembly (9).

7. The follow-up grinding device for a universal joint cross shaft journal according to claim 6, characterized in that: The upper end of the L-shaped frame (55) is fixedly connected to the mounting bracket (91), one end of the mounting bracket (91) is fixedly installed to the annular fixing bracket (92), and a triangular bracket (98) is installed on one side of the disc (94), one end of the triangular bracket (98) is fixedly installed to the output shaft end of the synchronous motor (56).

8. The follow-up grinding device for a universal joint cross shaft journal according to claim 1, characterized in that: A gear ring (93) is fixedly connected to one side of the annular fixed frame (92), a driven pulley (910) is fixedly connected to one end of the transmission shaft (911), a transmission pulley (918) is rotatably connected to one side of the disc (94), a belt (917) is internally connected to the transmission pulley (918), and the belt (917) is connected to the driven pulley (910).

9. The follow-up grinding device for a universal joint cross shaft journal according to claim 8, characterized in that: A groove (914) is provided on one side of the disc (94). A fixed post (915) is fixedly connected to the inner cavity of the groove (914). A slider (913) is slidably connected to the outside of the fixed post (915). A limit pulley (912) is rotatably connected to one end of the slider (913), and the limit pulley (912) is connected to the belt (917) for transmission.

10. The follow-up grinding device for a universal joint cross shaft journal according to claim 9, characterized in that: A second spring (916) is fixedly connected to one end of the inner cavity of the groove (914), and one end of the second spring (916) is fixedly connected to the slider (913). A gear (919) is fixedly connected to one end of the transmission pulley (918), and the gear (919) meshes with the gear ring (93).

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