Grinding head capable of automatically adjusting position of grinding wheel

Abstract

The utility model discloses a grinding head of automatic adjustment grinding wheel position belongs to grinding equipment technical field. This kind of grinding head of automatic adjustment grinding wheel position, including moving assembly, drive assembly and grinding head subassembly, moving assembly includes base, and the top surface sliding of base is provided with moving seat, and the inside screw thread connection of moving seat has lead screw, drive assembly contains reduction gearbox, hand wheel and first servo motor, and reduction gearbox is fixed on one side of base, and the outside of lead screw is fixed with second gear, and hand wheel rotation is connected in the outer wall of reduction gearbox, and the outside of hand wheel is fixed with first gear, and first servo motor is fixed on the outer wall of reduction gearbox, and the outside of output of first servo motor is fixed with third gear, and first gear is engaged with second gear, and second gear is engaged with third gear, grinding head subassembly sets up at the top surface of moving seat, and the utility model discloses can effectively realize hand wheel and the double drive mode of first servo motor, has higher practical value.

Description

Technical Field

[0001] This utility model relates to the field of grinding equipment technology, specifically a grinding head that can automatically adjust the position of the grinding wheel. Background Technology

[0002] Grinding heads are typically made of abrasive materials (such as diamond, silicon carbide, corundum, etc.) and a binder. They are mounted on equipment such as electric grinders and overhead grinders and rotate at high speeds, primarily for precision machining of materials. The core function of a grinding head is to cut, polish, or finish the surface of a material using high-speed rotating abrasive particles.

[0003] Based on the above, the inventors have discovered the following problems: the position adjustment of some existing grinding heads relies on purely manual operation, making it difficult to balance manual initial adjustment and automatic precision fine-tuning; when the grinding head wears down due to long-term use and needs fine-tuning to compensate for the wear distance, manual adjustment relies on the operator's experience and feel, making it difficult to achieve micron-level precision compensation, which can easily lead to grinding dimensional errors, especially in high-precision machining scenarios, and cannot meet strict dimensional tolerance requirements; at the same time, after the grinding head wears down, frequent machine stops and manual adjustments are required, and the adjustment process requires repeated testing and correction, which is time-consuming; long-term manual rotation of adjustment components (such as handwheels) for fine-tuning increases the labor intensity of operators.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a grinding head that can automatically adjust the position of the grinding wheel in order to achieve a more practical purpose. Utility Model Content

[0005] The purpose of this invention is to provide a grinding head that can automatically adjust the position of the grinding wheel, so as to solve the problems mentioned in the background art.

[0006] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0007] A grinding head capable of automatically adjusting the position of a grinding wheel includes a moving component, a driving component, and a grinding head assembly. The moving component includes a base, a movable seat slidably disposed on the top surface of the base, and a lead screw threadedly connected to the internal part of the movable seat. The driving component includes a reduction gearbox, a handwheel, and a first servo motor. The reduction gearbox is fixedly mounted on one side of the base. One end of the lead screw extends through the reduction gearbox and is rotatably connected to the inner wall of the reduction gearbox. A second gear is fixedly fitted around the outside of the lead screw. The handwheel is rotatably connected to the outer wall of the reduction gearbox, one end of the handwheel extends through the reduction gearbox and is rotatably connected to the inner wall of the reduction gearbox. A first gear is fixedly fitted around the outside of the handwheel. The first servo motor is fixedly mounted on the outer wall of the reduction gearbox. The output end of the first servo motor extends through the reduction gearbox and into its interior. A third gear is fixedly fitted around the output end of the first servo motor. The first gear meshes with the second gear, and the second gear meshes with the third gear. The grinding head assembly is disposed on the top surface of the movable seat.

[0008] Furthermore, the bottom of the movable seat is provided with a wedge-shaped boss, and the top of the base is provided with a wedge-shaped groove adapted to the wedge-shaped boss. The wedge-shaped boss is embedded in the interior of the wedge-shaped groove, and the outer wall of the wedge-shaped boss slides in cooperation with the inner wall of the wedge-shaped groove. The lead screw is fitted with a dustproof corrugated sleeve on the outside located between the movable seat and the gearbox, and the two ends of the dustproof corrugated sleeve are fixedly connected to the movable seat and the gearbox, respectively.

[0009] The beneficial effects of adopting the above-mentioned further solution are that, through the sliding fit between the wedge-shaped boss and the wedge-shaped groove, the offset, disengagement and deflection of the moving seat can be limited, thereby improving the guiding accuracy and stability of the moving seat sliding along the base; the sliding fit between the wedge-shaped boss and the wedge-shaped groove can distribute the load and enhance the load-bearing capacity of the overall structure; and the dustproof corrugated sleeve can protect the exposed lead screw part from dust.

[0010] Furthermore, the top surface of the gearbox is covered with a cover, and threaded holes are respectively opened at the four corners of the gearbox and the cover, with bolts threaded into each pair of corresponding threaded holes.

[0011] The beneficial effect of adopting the above-mentioned further solution is that the gearbox and the cover can be detachably fastened by bolt connection of the corresponding threaded holes at the four corners. This not only ensures the sealing and protection of the gear transmission mechanism inside the gearbox and prevents dust and impurities from entering, but also facilitates the later inspection and maintenance of the transmission components such as the first gear, second gear, and third gear inside the gearbox.

[0012] Furthermore, the grinding head assembly includes a second servo motor, which is fixedly mounted on the top surface of the movable base. A welding disk is installed at the output end of the second servo motor. A drive seat is welded to one side of the outer wall of the welding disk. A hollow cylinder is welded to the drive seat on the side away from the welding disk. An annular seat is fitted around the hollow cylinder. A grinding head is welded to the annular seat on the side away from the drive seat.

[0013] The beneficial effects of adopting the above-mentioned further solution are that the second servo motor, as the driving source of the grinding head, transmits power through the rigid connection between the welding disc, drive seat, hollow cylinder and annular seat, ensuring stable torque transmission during grinding head rotation and reducing transmission gap; welding fixation can ensure transmission coaxiality, avoid eccentric vibration during grinding head rotation, and improve grinding accuracy.

[0014] Furthermore, the drive seat and the annular seat are tightly fitted together, the inner wall of the annular seat is fitted with the outer wall of the hollow cylinder, and the inner wall of the annular seat is evenly provided with four slots along the circumference, and the outer wall of the hollow cylinder is evenly provided with four moving grooves along the circumference. Each of the four moving grooves has a slidably connected insert block inside, and the four insert blocks are respectively inserted into the four slots.

[0015] The beneficial effects of adopting the above-mentioned further solution are that the tight fit between the drive seat and the ring seat can ensure axial positioning accuracy and prevent axial movement of the grinding head; the close fit between the inner wall of the ring seat and the outer wall of the hollow cylinder, as well as the circumferentially evenly distributed inserts and slots, can achieve circumferential rigid locking between the ring seat and the hollow cylinder, preventing relative rotation due to torque when the grinding head rotates, and ensuring transmission reliability; at the same time, the plug-in structure provides a basis for quick disassembly and assembly of the grinding head, making it easy to replace different models of grinding heads according to processing requirements.

[0016] Furthermore, each of the four inserts is wedge-shaped at the end furthest from the slot, and each of the four inserts has a groove inside the wedge-shaped end. A slider is slidably connected in the groove. An extrusion block is provided between the four inserts. The outer wall of the extrusion block has an inclined surface that matches the wedge-shaped end of the insert. The inclined surface fits snugly with the wedge-shaped end of the insert. The slider is fixedly connected to the inclined surface. A ball screw is rotatably connected inside the extrusion block.

[0017] The beneficial effects of adopting the above-mentioned further solution are that by driving the extrusion block to move axially through the ball screw, and by utilizing the fit between the inclined surface of the extrusion block and the wedge-shaped end of the insertion block, the axial force of the extrusion block can be converted into the radial force of the insertion block, thereby achieving precise extension and retraction of the insertion block along the moving groove, and realizing reliable insertion or disengagement of the insertion block and the slot, thus improving the ease of operation; the four insertion blocks are evenly distributed circumferentially, which can ensure that the annular seat and the hollow cylinder are subjected to balanced forces, avoiding structural deformation caused by excessive local stress.

[0018] Furthermore, the slider is located inside the groove near one end of the connecting seat, and the sliding amount of the slider in the groove corresponds to the extension and retraction amount of the insert block.

[0019] The beneficial effect of adopting the above-mentioned further solution is that, due to the correspondence between the sliding amount of the slider and the extension and retraction amount of the insert, the extension or retraction of the insert can be precisely controlled; the initial position is when the slider is located at the end of the groove near the connecting seat, at which time the insert is pushed out; when the slider is located at the end opposite to the initial position (final position), the insert is retracted and located in the moving groove.

[0020] Furthermore, one end of the ball screw extends through the drive seat into the interior, and the other end of the ball screw is rotatably connected to the inner wall of the drive seat. A worm gear is fixedly fitted on the outside of the ball screw, and a worm is rotatably connected to the drive seat on one side of the worm gear. The worm and the worm gear mesh with each other, and one end of the worm extends through the drive seat into the outside. An internal hexagonal groove is formed inside the one end of the worm.

[0021] The beneficial effects of adopting the above-mentioned further solutions are that the worm gear transmission has a self-locking characteristic, which can lock the position of the ball screw when there is no driving force, prevent the extrusion block from moving accidentally and causing the insert block to loosen, and improve structural safety; the meshing transmission between the worm and the worm wheel can realize speed reduction and force amplification, making it easier to drive the ball screw with a smaller operating force and reducing the difficulty of manual adjustment; the internal hexagonal groove design at the end of the worm can be adapted to standard internal hexagonal tools for manual operation.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows: The grinding head that can automatically adjust the position of the grinding wheel has a dual-drive mode integrating a handwheel and a first servo motor in the drive component. The initial position of the grinding head can be adjusted using the handwheel, and when the grinding head is worn and fine-tuning is required, the second servo motor is used to compensate for the wear distance. At the same time, the dual-drive mode integrating the handwheel and the first servo motor in the drive component not only meets the requirements of automatic precision adjustment, but also allows for manual operation in the event of power failure or special working conditions, thus enhancing the flexibility of use. The grinding head assembly realizes quick disassembly and reliable locking of the grinding head through the insertion block, slot and wedge extrusion structure, improving the efficiency of grinding wheel replacement and the safety of use. Attached Figure Description

[0023] Figure 1 A three-dimensional structural diagram of a grinding head that can automatically adjust the position of the grinding wheel, provided by this utility model;

[0024] Figure 2 An exploded three-dimensional structural diagram of a moving assembly for a grinding head that can automatically adjust the position of the grinding wheel, provided by this utility model;

[0025] Figure 3 An exploded three-dimensional structural diagram of a drive assembly for a grinding head that can automatically adjust the position of the grinding wheel, provided by this utility model;

[0026] Figure 4 Exploded three-dimensional structure diagram of a grinding wheel assembly for a grinding head capable of automatically adjusting the grinding wheel position, provided by this utility model. Figure 1 ;

[0027] Figure 5 Exploded three-dimensional structure diagram of a grinding wheel assembly for a grinding head capable of automatically adjusting the grinding wheel position, provided by this utility model. Figure 2 .

[0028] In the diagram: 1. Moving component; 11. Base; 12. Moving seat; 13. Lead screw; 14. Second gear; 2. Drive assembly; 21. Gearbox; 22. Handwheel; 23. First gear; 24. First servo motor; 25. Third gear; 26. Cover; 3. Grinding head assembly; 31. Second servo motor; 32. Welding disc; 33. Drive seat; 34. Hollow cylinder; 35. Ring seat; 36. Grinding head; 37. Insert block; 38. Slot; 39. Slide groove; 310. Ball screw; 311. Extrusion block; 312. Slider; 313. Worm gear. Detailed Implementation

[0029] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-5This utility model provides a technical solution: a grinding head with an automatically adjustable grinding wheel position, comprising a moving component 1, a driving component 2, and a grinding head assembly 3. The moving component 1 includes a base 11, a movable seat 12 slidably disposed on the top surface of the base 11, and a lead screw 13 threadedly connected to the inside of the movable seat 12. The driving component 2 includes a reduction gearbox 21, a handwheel 22, and a first servo motor 24. The reduction gearbox 21 is fixedly mounted on one side of the base 11. One end of the lead screw 13 extends through the reduction gearbox 21 into the interior, and the other end of the lead screw 13 is rotatably connected to the inner wall of the reduction gearbox 21. A second gear 14 is fixedly fitted onto the outside of the lead screw 13. The handwheel 22 rotates and connects to the gearbox. The handwheel 22 is attached to the outer wall of the gearbox 21. One end of the handwheel 22 extends through the gearbox 21 into its interior, and the other end of the handwheel 22 is rotatably connected to the inner wall of the gearbox 21. A first gear 23 is fixedly mounted on the outside of the handwheel 22. A first servo motor 24 is fixedly mounted on the outer wall of the gearbox 21. The output end of the first servo motor 24 extends through the gearbox 21 into its interior, and a third gear 25 is fixedly mounted on the outside of the output end of the first servo motor 24. The first gear 23 meshes with the second gear 14, and the second gear 14 meshes with the third gear 25. The grinding head assembly 3 is located on the top surface of the moving base 12. Rotating the handwheel 22 drives... The first gear 23 rotates and meshes with the second gear 14, driving the lead screw 13 to rotate. The movable seat 12 is threadedly connected to the lead screw 13, and the wedge-shaped boss at the bottom of the movable seat 12 is embedded in the wedge-shaped groove of the base 11, restricting the movable seat 12 to slide only along the groove direction, thereby realizing the adjustment of the initial position of the grinding head assembly 3, especially the grinding wheel. During the driving of the handwheel 22, the output end of the first servo motor 24 rotates due to the meshing of the second gear 14 and the third gear 25. The first servo motor 24 is not braked and is not engaged. The force of the handwheel 22 can overcome electromagnetic damping and mechanical friction and drive the grinding head assembly 3, especially the grinding wheel, under the mechanical linkage of the gear meshing. The output shaft rotates; when the grinding head 36 shows slight wear and requires fine adjustment, the first servo motor 24 is started, and its output end drives the third gear 25 to rotate. The third gear 25 and the second gear 14 drive the lead screw 13 to rotate around the rotation fulcrum of the inner wall of the reduction gearbox 21; the moving seat 12 is threadedly connected to the lead screw 13, and the wedge-shaped boss at the bottom of the moving seat 12 is embedded in the wedge-shaped groove of the base 11, restricting the moving seat 12 to slide only along the groove direction, so as to realize the fine adjustment of the position of the grinding head assembly 3, especially the grinding wheel; during the driving of the first servo motor 24, since the third gear 25 meshes with the second gear 14, and the second gear 14 meshes with the first gear 23, the handwheel 22 also rotates when the first servo motor 24 is driven.

[0031] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figures 1-5 This utility model provides a technical solution: the bottom of the movable seat 12 is provided with a wedge-shaped boss, and the top of the base 11 is provided with a wedge-shaped groove adapted to the wedge-shaped boss. The wedge-shaped boss is embedded in the interior of the wedge-shaped groove, and the outer wall of the wedge-shaped boss slides in cooperation with the inner wall of the wedge-shaped groove. The lead screw 13 is fitted with a dustproof corrugated sleeve on the outside of the movable seat 12 and the reduction gearbox 21. The two ends of the dustproof corrugated sleeve are fixedly connected to the movable seat 12 and the reduction gearbox 21 respectively. The top surface of the reduction gearbox 21 is covered with a cover 26. Threaded holes are respectively opened at the four corners of the reduction gearbox 21 and the cover 26. Bolts are threaded into each pair of corresponding threaded holes. The grinding head assembly 3 includes a second servo motor 3. 1. The second servo motor 31 is fixedly mounted on the top surface of the movable base 12. A welding plate 32 is installed at the output end of the second servo motor 31. A drive base 33 is welded to one side of the outer wall of the welding plate 32. A hollow cylinder 34 is welded to the drive base 33 on the side away from the welding plate 32. An annular seat 35 is fitted on the outside of the hollow cylinder 34. A grinding head 36 is welded to the annular seat 35 on the side away from the drive base 33. When the second servo motor 31 is started, its output end drives the drive base 33 to rotate through the welding plate 32. The drive base 33 and the hollow cylinder 34 are welded together. The hollow cylinder 34 drives the annular seat 35 to rotate through the locking structure of the insert block 37 and the slot 38, ultimately realizing the high-speed rotation of the grinding head 36.

[0033] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Please see Figures 1-5This utility model provides a technical solution: the drive seat 33 and the annular seat 35 are tightly fitted together, the inner wall of the annular seat 35 is fitted with the outer wall of the hollow cylinder 34, and four slots 38 are evenly provided circumferentially on the inner wall of the annular seat 35. Four moving grooves are evenly provided circumferentially on the outer wall of the hollow cylinder 34. Insert blocks 37 are slidably connected inside the four moving grooves. The four insert blocks 37 are respectively inserted into the four slots 38. The end of each insert block 37 away from the slot 38 is wedge-shaped. A sliding groove 39 is provided inside the wedge-shaped end of each insert block 37. A slider 312 is slidably connected inside the sliding groove 39. A pressing device is provided between the four insert blocks 37. Block 311, the outer wall of the extrusion block 311 is provided with an inclined surface adapted to the wedge-shaped end of the insertion block 37. The inclined surface fits and cooperates with the wedge-shaped end of the insertion block 37. The slider 312 is fixedly connected to the inclined surface. A ball screw 310 is rotatably connected inside the extrusion block 311. The slider 312 is located inside the slide groove 39 near the connecting seat. The sliding amount of the slider 312 in the slide groove 39 corresponds to the extension and retraction amount of the insertion block 37. One end of the ball screw 310 extends through the drive seat 33 and into the interior. One end of the ball screw 310 is rotatably connected to the inner wall of the drive seat 33. A worm gear is fixedly fitted on the outside of the ball screw 310. The inside of the drive seat 33 is located on one side of the worm gear. A worm gear 313 is rotatably connected, meshing with a worm wheel. One end of the worm gear 313 extends outward through the drive seat 33, and an internal hexagonal groove is formed inside one end of the worm gear 313. An internal hexagonal tool is inserted into the groove of the worm gear 313 and rotated, causing the worm gear 313 to mesh with the worm wheel, thus rotating the ball screw 310. The ball screw 310 drives the extrusion block 311 to move axially towards the drive seat 33. The inclined surface of the extrusion block 311 fits against the wedge-shaped end of the insertion block 37, and the axial force is converted into a radial contraction force of the insertion block 37 through the wedge-shaped surface. The insertion block 37 slides inward along the moving groove of the hollow cylinder 34. The slider 312 is located within the insertion block 37. Synchronous sliding within the groove 39 ensures linear motion until it retracts into the outer contour of the hollow cylinder 34 and disengages from the slot 38 of the annular seat 35. The severely worn grinding head 36 is removed, and the annular seat 35 with the unworn grinding wheel is fitted into the hollow cylinder 34, aligning the slot 38 of the annular seat 35 with the retracted position of the movable slot insert 37. The worm gear 313 is rotated in the opposite direction, the ball screw 310 rotates in the opposite direction, the pressing block 311 moves axially away from the drive seat 33, the wedge-shaped inclined surface releases the pressure, and the insert 37 extends radially and inserts into the slot 38 of the annular seat 35, achieving circumferential locking between the annular seat 35 and the hollow cylinder 34, preventing the annular seat 35 from rotating when the grinding wheel rotates.

[0035] Specifically, the working principle of this type of grinding head that can automatically adjust the position of the grinding wheel is as follows: During use, rotating the handwheel 22 drives the first gear 23 to rotate. The first gear 23 meshes with the second gear 14, driving the lead screw 13 to rotate. The movable seat 12 is threadedly connected to the lead screw 13, and the wedge-shaped protrusion at the bottom of the movable seat 12 is embedded in the wedge-shaped groove of the base 11, restricting the movable seat 12 to slide only along the groove direction, thus achieving adjustment of the initial position of the grinding head assembly 3, especially the grinding wheel. During the driving process of the handwheel 22, because the second gear 14 meshes with the third gear 25, the output end of the first servo motor 24 rotates accordingly. The first servo motor 24 is not braked and is not engaged. The force of the handwheel 22 can overcome electromagnetic resistance. The grinding head 36 experiences slight wear and requires fine-tuning. The first servo motor 24 is activated, and its output drives the third gear 25 to rotate. The third gear 25, along with the second gear 14, drives the lead screw 13 to rotate around the pivot point on the inner wall of the reduction gearbox 21. The movable seat 12 is threadedly connected to the lead screw 13, and the wedge-shaped boss at the bottom of the movable seat 12 is embedded in the wedge-shaped groove of the base 11, restricting the movable seat 12 to slide only along the groove direction, thus achieving fine-tuning of the grinding head assembly 3, especially the grinding wheel position. During the driving process of the first servo motor 24, the third gear 25 meshes with the second gear 14, and the second gear 14 meshes with the first gear 23. When the first servo motor 24 is driven, the handwheel 22 also rotates, starting the second servo motor 31. Its output end drives the drive seat 33 to rotate through the welding plate 32. The drive seat 33 is welded to the hollow cylinder 34 as one piece. The hollow cylinder 34 drives the ring seat 35 to rotate through the locking structure of the insert block 37 and the slot 38, ultimately realizing the high-speed rotation of the grinding head 36.

[0036] It should be noted that the standard parts used in this application can all be purchased from the market, and can all be customized according to the description and drawings. The specific connection methods of each part all adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. Since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail in this application.

Claims

1. A grinding head capable of automatically adjusting the position of the grinding wheel, characterized in that, The assembly includes a moving component (1), a driving component (2), and a grinding head component (3). The moving component (1) includes a base (11), a movable seat (12) slidably disposed on the top surface of the base (11), and a lead screw (13) threadedly connected to the inside of the movable seat (12). The driving component (2) includes a reduction gearbox (21), a handwheel (22), and a first servo motor (24). The reduction gearbox (21) is fixedly mounted on one side of the base (11). One end of the lead screw (13) extends through the reduction gearbox (21) into the interior. One end of the lead screw (13) is rotatably connected to the inner wall of the reduction gearbox (21). A second gear (14) is fixedly fitted on the outside of the lead screw (13). The handwheel (22) is rotatably connected to the reduction gearbox. The outer wall of the gearbox (21) has one end of the handwheel (22) extending through the gearbox (21) into its interior. One end of the handwheel (22) is rotatably connected to the inner wall of the gearbox (21). The outer side of the handwheel (22) is fitted with a first gear (23). The first servo motor (24) is fixed to the outer wall of the gearbox (21). The output end of the first servo motor (24) extends through the gearbox (21) into its interior. The outer side of the output end of the first servo motor (24) is fitted with a third gear (25). The first gear (23) meshes with the second gear (14), and the second gear (14) meshes with the third gear (25). The grinding head assembly (3) is disposed on the top surface of the moving seat (12).

2. The grinding head with automatically adjustable grinding wheel position according to claim 1, characterized in that, The bottom of the movable seat (12) is provided with a wedge-shaped protrusion, and the top of the base (11) is provided with a wedge-shaped groove that is adapted to the wedge-shaped protrusion. The wedge-shaped protrusion is embedded in the interior of the wedge-shaped groove, and the outer wall of the wedge-shaped protrusion slides in conjunction with the inner wall of the wedge-shaped groove. The lead screw (13) is fitted with a dustproof corrugated sleeve on the outside of the movable seat (12) and the gearbox (21). The two ends of the dustproof corrugated sleeve are fixedly connected to the movable seat (12) and the gearbox (21) respectively.

3. A grinding head with automatically adjustable grinding wheel position according to claim 1, characterized in that, The top surface of the gearbox (21) is covered with a cover (26). Threaded holes are opened at the four corners of the gearbox (21) and the cover (26), and bolts are threaded into each pair of corresponding threaded holes.

4. A grinding head with automatically adjustable grinding wheel position according to claim 1, characterized in that, The grinding head assembly (3) includes a second servo motor (31), which is fixed to the top surface of the moving base (12). A welding disk (32) is installed at the output end of the second servo motor (31). A drive base (33) is welded to one side of the outer wall of the welding disk (32). A hollow cylinder (34) is welded to the drive base (33) on the side away from the welding disk (32). An annular seat (35) is sleeved on the outside of the hollow cylinder (34). A grinding head (36) is welded to the annular seat (35) on the side away from the drive base (33).

5. A grinding head with automatically adjustable grinding wheel position according to claim 4, characterized in that, The drive seat (33) and the annular seat (35) are closely fitted together. The inner wall of the annular seat (35) is fitted with the outer wall of the hollow cylinder (34). The inner wall of the annular seat (35) is evenly provided with four slots (38) along the circumference. The outer wall of the hollow cylinder (34) is evenly provided with four moving grooves along the circumference. Each of the four moving grooves is slidably connected with a plug (37). The four plugs (37) are respectively inserted into the four slots (38).

6. A grinding head with automatically adjustable grinding wheel position according to claim 5, characterized in that, The four inserts (37) are all wedge-shaped at the end away from the slot (38). The wedge-shaped ends of the four inserts (37) are all provided with grooves (39). A slider (312) is slidably connected in the grooves (39). An extrusion block (311) is provided between the four inserts (37). The outer wall of the extrusion block (311) is provided with an inclined surface that is adapted to the wedge-shaped end of the insert (37). The inclined surface fits and cooperates with the wedge-shaped end of the insert (37). The slider (312) is fixedly connected to the inclined surface. A ball screw (310) is rotatably connected inside the extrusion block (311).

7. A grinding head with automatically adjustable grinding wheel position according to claim 6, characterized in that, The slider (312) is located inside the groove (39) near the end of the connecting seat, and the sliding amount of the slider (312) in the groove (39) corresponds to the extension and retraction amount of the insert (37).

8. A grinding head with automatically adjustable grinding wheel position according to claim 7, characterized in that, One end of the ball screw (310) extends through the drive seat (33) into the interior. One end of the ball screw (310) is rotatably connected to the inner wall of the drive seat (33). A worm gear is fixedly fitted on the outside of the ball screw (310). A worm (313) is rotatably connected to the drive seat (33) on one side of the worm gear. The worm (313) meshes with the worm gear. One end of the worm (313) extends through the drive seat (33) into the outside. An internal hexagonal groove is opened inside one end of the worm (313).

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