A cross axle journal outside circle polishing device

Abstract

The utility model belongs to cross axle processing technical field, concretely is a kind of cross axle journal external circle polishing device, including base, the upper surface of base is rotatably installed with carousel, the both sides of carousel are slidably installed with fixed plate, the surface of two fixed plates is fixedly installed with multiple mounting plates, the surface of mounting plate is fixedly installed with rotary seat, rotary seat is rotatably installed with polishing ring in its inside, the inside of polishing ring is provided with multiple polishing blocks, the one end of polishing ring is rotatably installed with collar, the one end of collar is fixedly installed with rubber ring that seals cross axle journal, the other end of polishing ring is fixedly installed with connecting pipe. Through the setting of polishing ring, polishing block, collar, rubber ring and connecting pipe, when polishing and cooling liquid spraying are carried out on cross axle journal, the polishing place can be sealed, dust generated by cross axle polishing and water-cement mixture formed by cooling liquid are prevented from flying and polluting surrounding work area, and water-cement mixture can be guided and collected for centralized treatment.

Description

Technical Field

[0001] This utility model belongs to the field of cross shaft machining technology, and in particular relates to a cross shaft journal outer circle grinding device. Background Technology

[0002] A universal joint, also known as a cross-shaped universal joint, is a mechanical component that enables variable-angle power transmission. It is used in locations where the direction of the drive shaft needs to be changed, and it is the "joint" component of the universal joint system in an automotive drive system. The rigid universal joint with a cross-shaped shaft is a widely used non-constant velocity universal joint in automobiles, allowing a maximum angle of 15° to 20° between adjacent shafts. The universal joint has a central bore and four shaft ends in four directions. All four shaft ends need to be ground to a metallic luster to improve the surface finish of the universal joint.

[0003] Patent application CN202021203850.9 discloses a grinding device for the outer diameter of a cross shaft journal, including a grinding mechanism and a feeding mechanism. The feeding mechanism includes a mounting frame, at least two mounting rods disposed on the mounting frame for placing the cross shaft, and a driving component for driving the mounting frame to rise and fall. The mounting rods have arc-shaped bearing portions. This application utilizes mounting rods with arc-shaped bearing portions to place the shaft end of the cross shaft, and drives the mounting rods to rise and fall via the driving component to achieve cross shaft feeding, reduce production safety hazards, and improve the grinding efficiency of the cross shaft.

[0004] Existing technology uses a mounting rod with an arc-shaped bearing section to hold the end of the cross shaft and a drive unit to load it, reducing safety hazards. However, there are still some shortcomings in its overall use. First, coolant is usually added when grinding cross shafts to reduce the temperature of the grinding area, prevent the metal from overheating and deforming, and suppress the metal dust generated during grinding. However, after adding coolant, the rotation of the grinding head will cause the water-grout mixture to fly, resulting in pollution of the working area and cumbersome subsequent cleaning work. Secondly, although the existing technology can achieve cross shaft feeding, only one cross shaft can be processed during cross shaft grinding. The time accumulated in processing, clamping and other steps results in a long total working time for a single piece and a low output quantity per unit time, which is difficult to meet the needs of mass production. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, the present invention addresses the following technical problem: When grinding the cross shaft, although adding coolant can reduce temperature, prevent deformation, and reduce dust, the rotating grinding head easily throws out a water-ash mixture, which contaminates the work area and increases the cleaning burden. Furthermore, the existing technology only supports single-piece processing, and the time consumed in clamping and grinding processes is superimposed, resulting in excessively long processing time per piece, low unit output, and difficulty in meeting the needs of mass production.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a grinding device for the outer diameter of a cross shaft journal, comprising a base, a turntable for fixing multiple cross shafts rotatably mounted on the upper surface of the base, fixing plates slidably mounted on both sides of the turntable, multiple mounting plates fixedly mounted on the surfaces of the two fixing plates, a rotating seat fixedly mounted on the surface of the mounting plates, a grinding ring concentric with the cross shaft journal rotatably mounted inside the rotating seat, multiple grinding blocks disposed inside the grinding ring, a collar rotatably mounted on one end of the grinding ring, a rubber ring for sealing the cross shaft journal fixedly mounted on one end of the collar, when the cross shaft is inserted into the grinding ring, the grinding ring rotates to drive the grinding blocks to grind it, and a connecting pipe is fixedly mounted on the other end of the grinding ring.

[0007] Optionally, a plurality of rubber blocks are fixedly installed on the inner surface of the grinding ring, and the plurality of grinding blocks are fixed on the surface of the rubber blocks.

[0008] Optionally, one end of the polishing block is provided with a rounded corner.

[0009] Optionally, two sewage tanks are fixedly installed on the upper surface of the base, and the sewage tanks are rotatably connected to two connecting pipes.

[0010] Optionally, the top of the collar is connected to a nozzle.

[0011] Optionally, a toothed ring is fixedly installed on the outer surface of one end of the grinding ring, and a gear meshes on the outer side of the toothed ring.

[0012] Optionally, a fixing seat is fixedly installed on the upper surface of the turntable, an installation tube is fixedly installed on the upper surface of the fixing seat, and a spacer tube is slidably installed on the surface of the installation tube.

[0013] Optionally, the spacer tube is located between two adjacent cross shafts.

[0014] Optionally, the top of the mounting tube is provided with a threaded hole, and a fixing head is fitted inside the threaded hole.

[0015] Optionally, a U-shaped frame is fixedly installed on both sides of the mounting tube on the upper surface of the turntable.

[0016] In summary, compared with existing technologies, the beneficial effects of this solution are as follows: This utility model, through the setting of a grinding ring, grinding block, collar, rubber ring and connecting pipe, can seal the grinding area when the cross shaft journal is being ground and sprayed with coolant, so as to prevent the dust generated by the cross shaft grinding and the water-ash mixture formed by the coolant from flying away and polluting the surrounding work area. At the same time, it can guide the water-ash mixture for collection and centralized treatment, which greatly improves the use effect. This utility model, through the setting of a fixed base, mounting tube, U-shaped frame and spacer tube, can quickly and neatly place and fix multiple cross shafts, and at the same time separate the cross shafts to realize multi-station grinding, and grind multiple cross shafts at the same time, effectively improving work efficiency. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a top view of the structure of this utility model; Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at point AA; Figure 4 This is a schematic diagram of the grinding ring structure of this utility model; Figure 5 for Figure 3 Enlarged structural diagram at point B in the diagram; Figure 6 for Figure 1 Enlarged structural diagram at point C; Figure 7 This is a schematic diagram of the installation pipe structure of this utility model.

[0018] In the diagram: Base 10; Support leg 11; Turntable 12; First motor 13; Fixed seat 14; Mounting pipe 15; Threaded hole 16; Fixed head 17; U-shaped frame 18; Electric push cylinder 19; Fixed plate 20; Mounting plate 21; Rotating seat 22; Grinding ring 23; Rubber block 24; Grinding block 25; Rounded corner 26; Toothed ring 27; Second motor 28; Gear 29; Collar 30; Rubber ring 31; Nozzle 32; Connecting pipe 33; Sewage tank 34; Spacing pipe 35. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0020] refer to Figure 1 A cross-shaped journal outer diameter grinding device includes a base 10, a support leg 11 fixedly mounted on the lower surface of the base 10, a turntable 12 rotatably mounted on the upper surface of the base 10, a first motor 13 for driving the turntable 12 fixedly mounted on the lower surface of the base 10, and a fixed seat 14 for placing the cross-shaped journal fixedly mounted on the upper surface of the turntable 12. In use, the cross-shaped journal is placed on the upper surface of the fixed seat 14, and then the first motor 13 is controlled to work, driving the turntable 12 and the fixed seat 14 connected thereto to rotate, thereby enabling the cross-shaped journal to rotate. This allows for free adjustment of the part of the cross-shaped journal to be processed, facilitating subsequent grinding work.

[0021] Further reference Figure 1 and Figure 7 The mounting tube 15 is fixedly installed on the upper surface of the mounting base 14. The mounting tube 15 passes through the central hole of the cross shaft. The cross shaft is slidably installed on the surface of the mounting tube 15. Multiple spacer tubes 35 are also slidably installed on the surface of the mounting tube 15. After one cross shaft is installed, another spacer tube 35 is installed, so that the spacer tubes 35 are spaced between every two cross shafts, separating the two cross shafts, leaving the necessary space for grinding, and improving the use effect.

[0022] Further reference Figure 1 and Figure 7 The top end of the mounting tube 15 has a threaded hole 16, and a fixing head 17 is fitted inside the threaded hole 16. After the cross shafts and spacer tubes 35 are installed, the fixing head 17 can be screwed into the threaded hole 16. The downward pressing pressure of the fixing head 17 will press and fix the installed cross shafts and spacer tubes 35, preventing displacement during grinding. It should be noted that two robotic arms can be installed on the back side of the mounting tube 15, and the material can be fed through a servo system to improve the processing effect. Considering that this is a mature existing technology, it will not be described in detail in this solution.

[0023] Further reference Figure 1 The upper surface of the turntable 12 is fixedly mounted with U-shaped frames 18 on both sides of the fixed base 14. The U-shaped frame 18 has a groove in the middle. The opening size of the groove is the same as the diameter of the cross shaft journal. When the cross shaft is being fed, both ends of the cross shaft can be moved down along the groove of the U-shaped frame 18, which can quickly arrange the cross shaft neatly without manual adjustment, making it convenient for subsequent grinding work.

[0024] Further reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6Electric push cylinders 19 are fixedly installed on both sides of the turntable 12 on the surface of the base 10. A fixing plate 20 is fixedly installed on the output end of the electric push cylinder 19. It should be noted that the fixing plate 20 is made of high-strength material to prevent bending during movement. Multiple mounting plates 21 are fixedly installed on the side of the fixing plate 20 near the cross shaft. A rotating seat 22 is fixedly installed on one side of the mounting plate 21. A grinding ring 23 is rotatably installed inside the rotating seat 22. This grinding ring 23 is concentrically positioned with one end of the cross shaft. Multiple rubber blocks 24 are fixedly installed inside the grinding ring 23, and grinding blocks 25 are fixedly installed on the surface of the rubber blocks 24. When the cross shaft is being ground, the two electric push cylinders 19 pull... The two fixed plates 20 are moved in the center, and the grinding ring 23 is placed on the cross shaft journal. Due to the flexible setting of the rubber block 24, when the cross shaft journal is inserted into the interior of the grinding ring 23, it will squeeze the grinding block 25 and the rubber block 24, causing the rubber block 24 to deform. At the same time, the grinding block 25 abuts against the outer circle surface of the cross shaft journal, which facilitates the subsequent grinding work. The rounded corner 26 is provided at one end near the cross shaft journal, which can guide the cross shaft journal and reduce friction, making it easier for the cross shaft journal to be inserted into the interior of the grinding ring 23.

[0025] Further reference Figure 5 and Figure 6 A gear ring 27 is fixedly installed on the outer surface of the end of the grinding ring 23 away from the cross shaft. A second motor 28 is fixedly installed on the side of the mounting plate 21 away from the grinding ring 23. A gear 29 that meshes with the gear ring 27 is fixedly installed on the output end of the second motor 28. It should be noted that the mounting plate 21 has a notch inside for meshing between the gear 29 and the gear ring 27. After the grinding ring 23 is inserted into the cross shaft journal, the second motor 28 drives the gear 29 connected to it to rotate. When the gear 29 rotates, it drives the meshing gear ring 27 to rotate, thereby driving the grinding ring 23 to rotate. The grinding block 25 grinds the cross shaft journal. The dust generated during the grinding of the cross shaft journal will accumulate inside the grinding ring 23 to prevent it from flying around and polluting the surrounding working environment. With two sets of symmetrical grinding rings 23, both journals of the cross shaft can be ground at the same time, which speeds up the work efficiency.

[0026] Furthermore, after the two journals of the cross shaft are ground, the electric push cylinder 19 controls the grinding ring 23 to reset, thereby separating it from the cross shaft. At this time, the first motor 13 is controlled to drive the turntable 12 to rotate, thereby causing the cross shaft to rotate 90°, so that the two unground journals rotate to the grinding ring 23. Then, through the above scheme, the grinding ring 23 is fitted onto the outer surface of the cross shaft journal, and then grinding is performed, thereby completing the grinding of the entire cross shaft journal.

[0027] Further reference Figure 1 , Figure 3and Figure 6 A collar 30 is rotatably mounted on one end of the grinding ring 23 near the cross shaft, and a connecting pipe 33 is fixedly mounted on the other end of the grinding ring 23. A sewage tank 34 is fixedly mounted on the upper surface of the base 10 outside the fixing plate 20, and the connecting pipe 33 is rotatably connected to the sewage tank 34. It should be noted that the collar 30 and the grinding ring 23, and the connecting pipe 33 and the sewage tank 34 are all connected by a rotating joint, and the rotating joint is a mature existing technology, so it is not shown in the figure. A rubber ring 31 is fixedly installed on the outer end of the collar 30, and a nozzle 32 is connected to the top of the collar 30. The nozzle 32 is used to connect external water supply equipment (such as a water pump), which is existing technology and will not be described in detail in this solution. When the cross shaft journal is inserted into the grinding ring 23, the rubber ring 31 is flexible, which allows the cross shaft journal to be inserted smoothly. The rubber ring 31 can form a seal with the cross shaft journal. During grinding, the nozzle 32 can spray coolant onto the grinding area, which can reduce the temperature of the grinding area, prevent the cross shaft journal from overheating and deforming, and suppress the metal dust generated during grinding. Because the rubber ring 31 is sealed with the cross shaft journal, the sewage can enter the sewage tank 34 through the connecting pipe 33. This method can avoid the water-ash mixture from flying and causing pollution, and greatly improves the use effect.

[0028] Finally, it should be noted that the cross shaft journal outer circle grinding device of this utility model needs to protect the various mechanical structures and related motion logic in this solution. Therefore, it does not elaborate on the various sensors, detectors and driving components required for the actual operation of the various mechanical structures. However, for those skilled in the art, various control systems and electrical connection methods, including various electrical components and driving components, can be completed by conventional technical means. As long as the beneficial effect or the specific actions during the above work can be achieved, it can be implemented. This solution does not impose too many restrictions.

[0029] Furthermore, the first motor 13, electric push cylinder 19, and second motor 28 of the cross shaft journal outer circle grinding device in this utility model are all purchased from the market. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0030] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes that element.

[0031] The foregoing description illustrates and describes several preferred embodiments of this application. However, as previously stated, it should be understood that this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the conception outlined herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. A grinding device for the outer diameter of a cross shaft journal, comprising a base (10), characterized in that, The upper surface of the base (10) is rotatably mounted with a turntable (12) that fixes multiple cross shafts. Fixing plates (20) are slidably mounted on both sides of the turntable (12). Multiple mounting plates (21) are fixedly mounted on the surfaces of the two fixing plates (20). A rotating seat (22) is fixedly mounted on the surface of the mounting plate (21). A grinding ring (23) concentric with the cross shaft journal is rotatably mounted inside the rotating seat (22). Multiple grinding blocks (25) are provided inside the grinding ring (23). A collar (30) is rotatably mounted on one end of the grinding ring (23). A rubber ring (31) sealing the cross shaft journal is fixedly mounted on one end of the collar (30). When the cross shaft is inserted into the grinding ring (23), the grinding ring (23) rotates and drives the grinding blocks (25) to grind it. A connecting pipe (33) is fixedly mounted on the other end of the grinding ring (23).

2. The cross shaft journal outer diameter grinding device according to claim 1, characterized in that, Multiple rubber blocks (24) are fixedly installed on the inner surface of the grinding ring (23), and multiple grinding blocks (25) are fixed on the surface of the rubber blocks (24).

3. The cross shaft journal outer diameter grinding device according to claim 2, characterized in that, One end of the grinding block (25) is provided with a rounded corner (26).

4. The cross shaft journal outer diameter grinding device according to claim 1, characterized in that, Two sewage tanks (34) are fixedly installed on the upper surface of the base (10), and the sewage tanks (34) are rotatably connected to two connecting pipes (33).

5. The cross shaft journal outer diameter grinding device according to claim 1, characterized in that, The top of the collar (30) is connected to a nozzle (32).

6. The cross shaft journal outer diameter grinding device according to claim 2, characterized in that, A toothed ring (27) is fixedly installed on the outer surface of one end of the grinding ring (23), and a gear (29) meshes with the outer side of the toothed ring (27).

7. The cross shaft journal outer diameter grinding device according to claim 1, characterized in that, A fixing seat (14) is fixedly installed on the upper surface of the turntable (12), and an installation tube (15) is fixedly installed on the upper surface of the fixing seat (14). A spacer tube (35) is slidably installed on the surface of the installation tube (15).

8. The cross shaft journal outer diameter grinding device according to claim 7, characterized in that, The spacer tube (35) is located between two adjacent cross shafts.

9. A grinding device for the outer diameter of a cross shaft journal according to claim 7, characterized in that, The top of the mounting tube (15) is provided with a threaded hole (16), and a fixing head (17) is fitted inside the threaded hole (16).

10. A grinding device for the outer diameter of a cross shaft journal according to claim 7, characterized in that, The upper surface of the turntable (12) is fixedly mounted with U-shaped frames (18) on both sides of the mounting tube (15).

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