Universal joint fork ear hole polishing machine

Abstract

The present application belongs to the technical field of universal joint yoke hole polishing, and particularly relates to a universal joint yoke hole polishing machine, which comprises a machine base, a polishing disc, a control console, a multi-axis polishing mechanism and a friction type positioning mechanism, the polishing disc is arranged on the upper wall of one end of the machine base, the control console is arranged on the upper wall of the end of the machine base away from the polishing disc, the multi-axis polishing mechanism is arranged on the polishing disc, the multi-axis polishing mechanism comprises a driving assembly, a gear driving assembly and a grinding assembly, the driving assembly is arranged on one side of the polishing disc, the gear driving assembly is arranged on the side of the polishing disc close to the driving assembly, and the grinding assembly is arranged on the side of the polishing disc away from the driving assembly. The universal joint yoke hole polishing machine can pre-inspect the roughness of the universal joint yoke hole to be polished, reduce energy consumption, monitor the polishing state of the inner wall of the universal joint yoke hole, and avoid excessive polishing of the universal joint yoke hole.

Description

Technical Field

[0001] This invention belongs to the field of universal joint fork lug grinding technology, specifically referring to a grinding machine tool for universal joint fork lugs. Background Technology

[0002] In modern machinery manufacturing, drive shafts are core components for power transmission in various mechanical equipment, and their performance is of paramount importance. Among these, the quality of the universal joint fork directly impacts the operational performance and reliability of the entire transmission system. In particular, the universal joint fork lug, as a critical connection point between the drive shaft and other components, requires extremely stringent requirements for machining accuracy and surface quality.

[0003] The existing grinding machines for universal joint fork lug holes have the following problems: Existing universal joint fork lug grinding machines lack the ability to pre-inspect the roughness of the inner wall of the universal joint fork lug to be ground, resulting in continuous idling of universal joint fork lugs that do not require polishing or only require slight deburring, causing energy waste. Furthermore, traditional universal joint fork lug grinding machines also lack the ability to monitor the polishing status of the universal joint fork lug in real time, resulting in the inability to adjust the polishing status of the grinding structure in a timely manner, causing the universal joint fork lug to be over-polished, affecting its yield. Therefore, it cannot meet the current demand for grinding machines used for universal joint fork lug holes. Summary of the Invention

[0004] In response to the above situation and to overcome the shortcomings of the existing technology, this solution provides a grinding machine tool for universal joint fork lugs that can pre-inspect the roughness of the universal joint fork lugs to be polished, reduce energy consumption, and monitor the polishing status of the inner wall of the universal joint fork lugs to avoid over-polishing of the universal joint fork lugs.

[0005] The technical solution adopted in this solution is as follows: This solution proposes a universal joint fork lug grinding machine, including a machine base, a grinding disc, a control console, a multi-axis polishing mechanism, and a grinding-measuring positioning mechanism. The grinding disc is located on the upper wall of one end of the machine base, and the control console is located on the upper wall of the end of the machine base away from the grinding disc. The multi-axis polishing mechanism is located on the grinding disc and includes a drive assembly, a gear drive assembly, and a grinding assembly. The drive assembly is located on one side of the grinding disc, the gear drive assembly is located on the side of the grinding disc close to the drive assembly, and the grinding assembly is located on the side of the grinding disc away from the drive assembly. The grinding-measuring positioning mechanism includes a fixing assembly, a reset assembly, and a clutch assembly. The fixing assembly is located on the side of the grinding disc close to the grinding assembly, the reset assembly is located on the fixing assembly, and the clutch assembly is located on the side of the grinding disc close to the grinding assembly.

[0006] As a further preferred embodiment of the present invention, the drive assembly includes a motor base, a drive motor, a gear carrier, and a drive shaft. The motor base is located at the end of the control panel away from the base. The drive motor is located inside the motor base. The gear carrier is located on the side of the grinding disc near the control panel. The drive shaft passes through the gear carrier and is located between the power end of the drive motor and the grinding disc. The drive shaft is rotatably connected to the grinding disc. The gear drive assembly includes a drive gear, a transmission shaft, and a driven gear. The drive gear is located on the outside of the drive shaft near the grinding disc. Multiple sets of transmission shafts are rotatably located on the sidewall of the grinding disc outside the drive gear. The driven gear is located on the side of the transmission shaft away from the grinding disc. The drive gear meshes with the driven gear. The grinding assembly includes a grinding shaft, a grinding roller, and an elastic grinding tool. The grinding shaft is rotatably located on the side of the transmission shaft away from the driven gear. The grinding roller is located on the side of the grinding shaft away from the grinding disc. Multiple sets of elastic grinding tools are located on the outside of the grinding roller.

[0007] In use, the drive motor drives the drive shaft to rotate, the drive shaft drives the drive gear to rotate, the drive gear drives the transmission shaft to rotate through the driven gear, the transmission shaft drives the grinding shaft to rotate through the linkage structure, and the grinding shaft drives the elastic abrasive to rotate through the grinding roller to polish the inner wall of the universal joint fork lug hole.

[0008] Preferably, the fixing assembly includes a fixing seat, an arc-shaped box, an arc-shaped block, a positioning platform, a positioning groove, and positioning bolts. The fixing seat is located on the side wall of the grinding disc between the grinding rollers. Multiple sets of arc-shaped boxes are located on the side wall of the fixing seat. Each arc-shaped box is open at one end. The arc-shaped block is slidably located inside the arc-shaped box. The positioning platform is located on the side of the arc-shaped block near the grinding roller. The positioning groove is located on the end of the positioning platform away from the arc-shaped block and is open on three sides. The positioning bolts are symmetrically located on both sides of the positioning platform and are threadedly connected to the positioning platform. The reset assembly includes a reset spring and a proximity switch. The reset spring is located between the inner wall of the arc-shaped box and the arc-shaped block and is in an extended state. The proximity switch is located through the side wall of the arc-shaped box. The clutch assembly includes a ring electromagnet and a fixed magnetic block. The ring electromagnet is located at the end of the drive shaft near the grinding shaft, and the fixed magnetic block is located at the end of the grinding shaft near the drive shaft. The fixed magnetic block is located inside the ring electromagnet.

[0009] In use, the outer diameter of the elastic abrasive is slightly larger than the diameter of the universal joint fork lug hole. The universal joint fork is placed inside the positioning groove. The deformation of the elastic abrasive causes the universal joint fork lug hole to be inserted into the outside of the grinding roller. The elastic abrasive fits tightly against the inner wall of the universal joint fork lug hole. The positioning bolt is rotated along the inner wall of the positioning table to fix the universal joint fork.

[0010] Specifically, a controller is provided on the side wall of the console.

[0011] The controller is electrically connected to the drive motor, the proximity switch and the ring electromagnet.

[0012] The beneficial effects achieved by this solution using the above structure are as follows: Compared with existing technologies, this solution combines a multi-axis polishing mechanism with a grinding-measuring positioning mechanism. Through the setting of drive components, gear components, grinding components, fixing components, reset components, and clutch components, during the simultaneous grinding of the universal joint fork lug holes by multiple heads, the elastic reset characteristics of the reset spring can be used to sense the grinding status of the inner wall of each universal joint fork lug hole in real time and dynamically adjust the processing strategy. This prevents universal joint fork lug holes that have already met the standards from continuing to contact the surface of the elastic abrasive, ensuring that the amount of material removed from each ground universal joint fork lug hole is controlled within the preset minimum value range. This fundamentally eliminates dimensional deviations or surface damage caused by over-polishing and reduces the probability of abrasive particles or metal debris being trapped between the elastic abrasive and the inner wall of the universal joint fork, causing scratches on the originally smooth surface, thereby improving the yield of the processed universal joint fork. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this solution; Figure 2 This is the front perspective stereoscopic view of this solution; Figure 3 This is a schematic diagram of the exploded structure of this scheme; Figure 4 This is a schematic diagram of the wear-measuring positioning mechanism in this solution; Figure 5 This is a schematic diagram of the multi-axis polishing mechanism in this solution; Figure 6 This is the main view of this solution; Figure 7 This is the left view of this scheme; Figure 8 This is the right view of the scheme; Figure 9 This is a top view of the plan; Figure 10 for Figure 9 Sectional view of AA section; Figure 11 for Figure 2 Enlarged structural view of section I; Figure 12 for Figure 10 Enlarged structural view of Part II.

[0014] The components are as follows: 1. Base, 2. Grinding disc, 3. Control console, 4. Multi-axis polishing mechanism, 5. Drive assembly, 6. Motor mount, 7. Drive motor, 8. Gear frame, 9. Drive shaft, 10. Gear drive assembly, 11. Drive gear disc, 12. Transmission shaft, 13. Driven gear, 14. Grinding assembly, 15. Grinding shaft, 16. Grinding roller, 17. Elastic abrasive, 18. Grinding-measuring positioning mechanism, 19. Fixing assembly, 20. Fixing base, 21. Arc-shaped box, 22. Arc-shaped block, 23. Positioning table, 24. Positioning groove, 25. Positioning bolt, 26. Reset assembly, 27. Reset spring, 28. Proximity switch, 29. Clutch assembly, 30. Ring electromagnet, 31. Fixed magnetic block, 32. Controller.

[0015] The accompanying drawings are provided to further understand the present solution and form part of the specification. They are used together with the embodiments of the present solution to explain the present solution and do not constitute a limitation thereof. Detailed Implementation

[0016] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this solution, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this solution without creative effort are within the scope of protection of this solution.

[0017] In the description of this solution, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", and "outer" 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 solution 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, they should not be construed as limitations on this solution.

[0018] like Figures 1-12As shown, this solution proposes a grinding machine for universal joint fork lugs, including a machine base 1, a grinding disc 2, a control console 3, a multi-axis polishing mechanism 4, and a grinding-measuring positioning mechanism 18. The grinding disc 2 is located on the upper wall of one end of the machine base 1, and the control console 3 is located on the upper wall of the end of the machine base 1 away from the grinding disc 2. The multi-axis polishing mechanism 4 is located on the grinding disc 2 and includes a drive assembly 5, a gear drive assembly 10, and a grinding assembly 14. The drive assembly 5 is located on the grinding disc 2. On one side of the grinding disc 2, the gear drive assembly 10 is located on the side of the grinding disc 2 near the drive assembly 5, and the grinding assembly 14 is located on the side of the grinding disc 2 away from the drive assembly 5. The grinding-measuring positioning mechanism 18 includes a fixing assembly 19, a reset assembly 26, and a clutch assembly 29. The fixing assembly 19 is located on the side of the grinding disc 2 near the grinding assembly 14, the reset assembly 26 is located on the fixing assembly 19, and the clutch assembly 29 is located on the side of the grinding disc 2 near the grinding assembly 14.

[0019] The drive assembly 5 includes a motor base 6, a drive motor 7, a gear carrier 8, and a drive shaft 9. The motor base 6 is located at the end of the control console 3 away from the base 1. The drive motor 7 is located inside the motor base 6. The gear carrier 8 is located on the side of the grinding disc 2 near the control console 3. The drive shaft 9 passes through the gear carrier 8 and is located between the power end of the drive motor 7 and the grinding disc 2, and the drive shaft 9 is rotatably connected to the grinding disc 2. The gear drive assembly 10 includes a driving gear 11, a transmission shaft 12, and a driven gear 13. The driving gear 11 is located on the gear carrier 8 near the grinding disc. On the outside of the drive shaft 9 on one side, multiple sets of the drive shafts 12 are rotatably disposed on the side wall of the grinding disc 2 outside the drive gear 11. The driven gear 13 is disposed on the side of the drive shaft 12 away from the grinding disc 2. The drive gear 11 meshes with the driven gear 13. The grinding assembly 14 includes a grinding shaft 15, a grinding roller 16 and an elastic grinding tool 17. The grinding shaft 15 is rotatably disposed on the side of the drive shaft 12 away from the driven gear 13. The grinding roller 16 is disposed on the side of the grinding shaft 15 away from the grinding disc 2. Multiple sets of the elastic grinding tools 17 are disposed on the outside of the grinding roller 16.

[0020] The fixing assembly 19 includes a fixing base 20, an arc-shaped box 21, an arc-shaped block 22, a positioning platform 23, a positioning groove 24, and positioning bolts 25. The fixing base 20 is located on the side wall of the grinding disc 2 between the grinding rollers 16. Multiple sets of arc-shaped boxes 21 are located on the side wall of the fixing base 20. Each arc-shaped box 21 is open at one end. The arc-shaped block 22 is slidably disposed inside the arc-shaped box 21. The positioning platform 23 is located on the side of the arc-shaped block 22 closest to the grinding rollers 16. The positioning groove 24 is located on the end of the positioning platform 23 away from the arc-shaped block 22. The positioning groove 24 is open on three sides. The positioning bolts 25 are symmetrically arranged on the positioning platform. On both sides of 23, positioning bolts 25 are threadedly connected to positioning platform 23; the reset assembly 26 includes a reset spring 27 and a proximity switch 28. The reset spring 27 is located between the inner wall of the arc-shaped box 21 and the arc-shaped block 22, and the reset spring 27 is in an extended state. The proximity switch 28 is disposed through the side wall of the arc-shaped box 21; the clutch assembly 29 includes an annular electromagnet 30 and a fixed magnetic block 31. The annular electromagnet 30 is located at one end of the drive shaft 12 near the grinding shaft 15, and the fixed magnetic block 31 is located at one end of the grinding shaft 15 near the drive shaft 12. The fixed magnetic block 31 is located inside the annular electromagnet 30.

[0021] The control console 3 has a controller 32 on its side wall.

[0022] The controller 32 is electrically connected to the drive motor 7, the proximity switch 28 and the annular electromagnet 30, respectively.

[0023] In actual use, in the initial state, the return spring 27 is in the extended state, the arc block 22 is located in the middle position of the arc box 21, the proximity switch 28 cannot sense the arc block 22, and multiple sets of universal joint forks are placed into the positioning groove 24 on the outside of the fixed seat 20. The outer diameter of the elastic mold 17 is larger than the inner diameter of the universal joint fork ear hole. The deformation of the elastic mold 17 itself makes the universal joint fork ear hole fit on the outside of the grinding roller 16. The elastic mold 17 is tightly fitted with the inner wall of the universal joint fork ear hole. The operator rotates the positioning bolt 25, and the positioning bolt 25 rotates along the inner wall of the positioning table 23 to fix the universal joint fork. The roughness of the inner walls of the fixed universal joint fork lugs varies. To avoid over-polishing of the universal joint fork lugs with lower roughness during synchronous grinding, the controller 32 controls the start of the drive motor 7. The drive motor 7 drives the drive shaft 9 to rotate, and the drive shaft 9 drives the active gear 11 to rotate. The active gear 11 drives the transmission shaft 12 to rotate through the driven gear 13. The controller 32 controls the start of the annular electromagnet 30. The annular electromagnet 30 generates magnetism when energized. The annular electromagnet 30 and the fixed magnetic block 31 are set with opposite poles. The annular electromagnet 30 attracts the fixed magnetic block 31 through magnetic force. The transmission shaft 12 drives the fixed magnetic block 31 to rotate through the annular electromagnet 30. The fixed magnetic block 31 drives the grinding roller 16 to rotate through the grinding shaft 15. The grinding roller 16 drives the elastic abrasive 17 to rotate to polish the inner wall of the universal joint fork lug. The inner wall of the universal joint fork lug hole has a high roughness at the beginning and the inner diameter of the lug hole is at its maximum value. The frictional resistance between the elastic abrasive 17 and the universal joint fork lug hole is large. When the elastic abrasive 17 rotates, it drives the positioning table 23 to rotate through the universal joint fork. The positioning table 23 drives the arc block 22 to slide circumferentially along the inner wall of the arc box 21. The arc block 22 uses the elastic deformation of the return spring 27 to approach the proximity switch 28. When the drive motor 7 runs to the preset time, if the proximity switch 28 does not sense the corresponding arc block 22 (that is, the arc block 22 is still in the initial position), it indicates that the roughness of the universal joint fork lug hole has met the preset processing requirements and no further polishing operation is required. The controller 32 controls the corresponding annular electromagnet 30 to be de-energized and demagnetized, and stops driving the elastic abrasive 17 to perform the polishing operation. For universal joint fork lugs with high inner wall roughness that require polishing, the frictional resistance during polishing is large, which will cause the universal joint fork and the arc block 22 fixed thereto to undergo circumferential displacement. When the arc block 22 moves into the sensing range of the proximity switch 28, the proximity switch 28 generates a signal and transmits it to the controller 32. The controller 32 determines that the lug still needs to be polished, so it maintains the energized state of the corresponding annular electromagnet 30 to continue polishing. After the inner wall of the universal joint fork lug is polished, the frictional resistance between the universal joint fork lug and the elastic abrasive 17 decreases instantaneously. The arc block 22 returns to its initial position under the rebound of the return spring 27. The proximity switch 28 can no longer sense the arc block 22, and the controller 32 cannot receive the signal fed back by the proximity switch 28. The annular electromagnet 30 is de-energized and demagnetized, stopping the polishing operation on the corresponding universal joint fork lug. After all the elastic abrasives 17 fixed on the outside of the fixed base 20 stop rotating, rotate the positioning bolt 25. The positioning bolt 25 rotates along the inner wall of the positioning platform 23 away from the side wall of the universal joint fork. The universal joint fork changes from a fixed state to a movable state. Remove the polished universal joint fork from the positioning groove 24 and put a new set of universal joint forks to be polished into the positioning groove 24. Repeat the above operation for the next use.

[0024] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] The present solution and its implementation methods have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present solution; the actual structure is not limited to this. In conclusion, if a person skilled in the art, inspired by this description, designs a similar structure and embodiment without departing from the inventive intent of this solution, such design should fall within the protection scope of this solution.

Claims

1. A grinding machine for universal joint fork lug holes, comprising a machine base, a grinding disc, and a control console, characterized in that: It also includes a multi-axis polishing mechanism and a grinding-measuring positioning mechanism. The grinding disc is located on the upper wall of one end of the machine base, and the control console is located on the upper wall of the end of the machine base away from the grinding disc. The multi-axis polishing mechanism is located on the grinding disc and includes a drive assembly, a gear drive assembly, and a grinding assembly. The drive assembly is located on one side of the grinding disc, the gear drive assembly is located on the side of the grinding disc close to the drive assembly, and the grinding assembly is located on the side of the grinding disc away from the drive assembly. The grinding-measuring positioning mechanism includes a fixing assembly, a reset assembly, and a clutch assembly. The fixing assembly is located on the side of the grinding disc close to the grinding assembly, the reset assembly is located on the fixing assembly, and the clutch assembly is located on the side of the grinding disc close to the grinding assembly. The geared assembly includes a drive shaft and a driven gear; The grinding assembly includes a grinding roller, a grinding shaft, and a flexible grinding wheel; The grinding shaft is located on the side of the drive shaft away from the driven gear, the grinding roller is located on the side of the grinding shaft away from the grinding disc, and multiple elastic grinding tools are located on the outside of the grinding roller. The fixing components include a fixing base, an arc-shaped box, an arc-shaped block, a positioning platform, a positioning groove, and positioning bolts; The fixed seat is located on the side wall of the grinding disc between the grinding rollers. Multiple arc-shaped boxes are located on the side wall of the fixed seat. The arc-shaped block is slidably located inside the arc-shaped box. The positioning table is located on the side of the arc-shaped block close to the grinding roller. The positioning groove is located at the end of the positioning table away from the arc-shaped block. The positioning bolts are symmetrically located on both sides of the positioning table. The positioning bolts are threadedly connected to the positioning table. The reset assembly includes a reset spring and a proximity switch; The reset spring is located between the inner wall of the arc-shaped box and the arc-shaped block, and the proximity switch is located through the side wall of the arc-shaped box.

2. The grinding machine tool for universal joint fork lugs according to claim 1, characterized in that: The drive assembly includes a motor base, a drive motor, a gear carrier, and a drive shaft. The motor base is located at the end of the control panel away from the base. The drive motor is located inside the motor base. The gear carrier is located on the side of the grinding disc near the control panel. The drive shaft passes through the gear carrier and is located between the power end of the drive motor and the grinding disc. The drive shaft is rotatably connected to the grinding disc.

3. A grinding machine for universal joint fork lugs according to claim 2, characterized in that: The gear assembly also includes a drive gear disk, which is located on the outside of the drive shaft near the grinding disc on the gear carrier. Multiple transmission shafts are rotatably located on the side wall of the grinding disc outside the drive gear disk. The driven gear is located on the side of the transmission shaft away from the grinding disc. The drive gear disk meshes with the driven gear.

4. A grinding machine for universal joint fork lugs according to claim 1, characterized in that: The arc-shaped box is open at one end, and the positioning groove is open on three sides.

5. A grinding machine for universal joint fork lugs according to claim 1, characterized in that: The return spring is in an extended state.

6. A grinding machine for universal joint fork lugs according to claim 1, characterized in that: The clutch assembly includes a ring electromagnet and a fixed magnetic block. The ring electromagnet is located at one end of the drive shaft near the grinding shaft, and the fixed magnetic block is located at the other end of the grinding shaft near the drive shaft. The fixed magnetic block is located inside the ring electromagnet.

7. A grinding machine for universal joint fork lugs according to claim 1, characterized in that: The console has a controller on its side wall.

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