A positioning accurate electric grinder head turning and polishing equipment

Abstract

The application provides a positioning-accurate electric grinder head turning and polishing equipment, and belongs to the technical field of electric angle grinder head manufacturing. It solves the problem of the urgent need for developing a positioning-accurate and coordinated electric grinder head polishing equipment in the market. The application comprises a rack, a rotating table component, a material taking component, a material unloading component, a positioning detection component, a forward polishing component, a reverse polishing component and a turning component arranged on the rack. The rotating table component has six stations, which are sequentially arranged in a clockwise direction as a material feeding station, a forward polishing station, a turning station, a reverse polishing station, a material unloading station and a positioning station. Compared with the prior art, the application has high automation and precision, and can automatically polish the front and back surfaces of the grinder head with high continuity and positioning accuracy.

Description

Technical Field

[0001] This invention belongs to the field of electric angle grinder head manufacturing technology, and relates to a precision-positioning electric grinder head flipping and polishing device. Background Technology

[0002] An electric angle grinder is a handheld power tool used for grinding. Its end can be fitted with various grinding heads, such as coarse grinding wheels, fine grinding wheels, polishing wheels, rubber wheels, cutting wheels, and wire wheels. These grinding heads are all disc-shaped.

[0003] Before leaving the factory, the disc-shaped grinding head also undergoes surface grinding and polishing to remove burrs, so that the upper and lower end faces of the grinding head are neat and symmetrical. Grinding heads with uniform and symmetrical material on the two end faces will have better coaxiality in the rotating working environment.

[0004] For disc-shaped grinding heads, since only the top and bottom surfaces need to be polished during the polishing process, the following method can be used: First, the grinding head is clamped with the top surface facing up and the bottom surface facing down. Then, the polishing wheel of the polishing machine descends from above to touch the top surface of the grinding head to complete the polishing of the top surface. Then, the grinding head is clamped a second time, with the bottom surface facing up and the top surface facing down. Then, the polishing wheel of the polishing machine descends from above again to touch the bottom surface of the grinding head to complete the polishing of the top surface.

[0005] To achieve the above highly automated operation process, the implementation process can be broken down into smaller steps. The first clamping is carried out by a loading robot to transport the grinding head, the first polishing is done by a forward polishing machine, the second clamping process after flipping is carried out by a flipping robot, the first polishing is done by a reverse polishing machine, the grinding head after polishing is removed by an unloading robot, and then it is also necessary to have a station-changing device for transporting the grinding head throughout the process, as well as a table for placing the grinding head during operation.

[0006] Therefore, the design process of the entire device is quite complex, requiring very precise positioning capabilities, and good connectivity between the various components. Summary of the Invention

[0007] The purpose of this invention is to address the urgent need in the existing market for a dedicated polishing device for electric grinder heads with good positioning and coordination, and to propose a precision-positioning electric grinder head flipping and polishing device.

[0008] The objective of this invention can be achieved through the following technical solutions: A precision-positioning electric grinder head flipping and polishing device is characterized by comprising a frame and a turntable component, a material handling component, a material unloading component, a positioning and detection component, a forward polishing component, a reverse polishing component, and a flipping component mounted on the frame. The turntable component has six stations, which are arranged clockwise as follows: material loading station, forward polishing station, flipping station, reverse polishing station, unloading station, and positioning station. The material handling component, unloading component, positioning and detection component, forward polishing component, reverse polishing component, and flipping component are respectively located at the material loading station, unloading station, positioning station, forward polishing station, reverse polishing station, and flipping station.

[0009] In the aforementioned precision-positioning electric grinder head reversing and polishing equipment, the positioning detection component includes a detection frame fixed relative to the machine frame, a detection truss mounted on the detection frame, a detection block that can slide on the detection truss, and a detection hydraulic cylinder fixed on the detection block. The piston rod of the detection hydraulic cylinder is connected to the detection frame and drives the displacement of the detection block during the extension and retraction process. The detection block is equipped with multiple laser probes, which are set downwards and used to detect whether the positioning station is accurately positioned.

[0010] In the aforementioned precision-positioning electric grinder head turning and polishing equipment, the turning component includes a turning frame fixed relative to the machine frame and a lifting platform slidably mounted on the turning frame via a slide rail. The turning frame has a vertical groove in its center, and its interior is hollow and connected to the vertical groove. The back of the lifting platform has a cavity connected to the vertical groove. A rotating rod is rotatably mounted on the front of the lifting platform, and a latch is provided on the outer end face of the rotating rod. The latch has two pairs of electromagnetic claws. When energized, the electromagnetic claws possess strong magnetism sufficient to attract the metal grinding head from the bottom. A gap is left between the two sets of electromagnetic claws. A limiting bushing is fixed inside the lifting platform, and the upper part of the middle section of the limiting bushing... The shaft is cut off by 180 degrees to form a half-shaft section. The rotating rod is rotatably set in the limiting bushing. An external key is fixed on the rotating rod. Keyways matching the size of the external key are opened on both ends of the half-shaft section. A flipping drive is fixedly installed at the high position of the hollow interior of the flipping frame. A flipping wheel is fixedly sleeved on the output end of the flipping drive. A flipped wheel is fixedly sleeved on the rotating rod. When the rotating rod moves to the highest position with the lifting platform, the flipping wheel and the flipped wheel are in contact to transmit power. Each time they make contact, the flipping wheel rotates forward and backward in sequence, causing the flipped wheel to rotate forward and backward with the rotating rod. The forward and reverse rotation process continues until the external key flips from being embedded in the keyway on one side to being embedded in the keyway on the other side.

[0011] In the aforementioned precision-positioning electric grinder head flipping and polishing equipment, the external key is made of a weighted material, so that the external key can have a stable center of gravity on any side when flipped.

[0012] In the aforementioned precision-positioning electric grinder head flipping and polishing equipment, the keyway length is greater than the outer key, allowing the outer key to move within the keyway but not to detach. The inner end of the rotating rod is provided with an adapter hole. The vertical groove of the flipping frame is equipped with a cylinder frame for lifting and lowering. A telescopic cylinder is fixed on the cylinder frame, and the piston rod of the telescopic cylinder is connected to the adapter hole.

[0013] In the aforementioned precision-positioning electric grinder head reversing and polishing equipment, the material handling component includes a material handling frame fixed relative to the machine frame, a material handling truss mounted on the material handling frame, a material handling block that can slide on the material handling truss, and a material handling suction plate mounted on the material handling block. A material handling hydraulic cylinder is fixedly mounted on the material handling frame, and the piston rod of the material handling hydraulic cylinder is connected to the material handling block to realize the displacement of the material handling block on the material handling truss. The material handling suction plate and the material handling block are equipped with a material handling lifting drive cylinder. When the material handling suction plate is energized, it has strong magnetism sufficient to attract the grinding head made of metal.

[0014] In the aforementioned precision-positioning electric grinder head flipping and polishing equipment, the unloading component includes an unloading frame fixed relative to the machine frame, an unloading truss mounted on the unloading frame, an unloading block that can slide on the unloading truss, and an unloading suction plate mounted on the unloading block. An unloading hydraulic cylinder is fixedly mounted on the unloading frame, and the piston rod of the unloading hydraulic cylinder is connected to the unloading block to realize the displacement of the unloading block on the unloading truss. The unloading suction plate and the unloading block are equipped with unloading lifting drive cylinders. When the unloading suction plate is energized, it has strong magnetism sufficient to attract the grinding head made of metal.

[0015] In the aforementioned precision-positioning electric grinder head flipping and polishing equipment, the turntable component includes a base with an internal cavity, a disc-shaped turntable rotatably mounted above the base via a central shaft, and a switching drive component mounted inside the cavity to provide rotation of the turntable. Above the base are the aforementioned six workstations, and the turntable has six symmetrically arranged workstations for placing grinding heads. The bottom of each workstation is fixed with a spindle and is rotatably connected to the turntable via the spindle.

[0016] Compared with existing technologies, this flipping and polishing equipment has extremely high automation and precision, and can automatically achieve highly connected and precisely positioned polishing operations on both the front and back of the grinding head. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the first structure of the flipping and polishing equipment; Figure 2 This is a schematic diagram of the second structure of the flipping and polishing equipment; Figure 3 This is a first structural schematic diagram showing the positional relationship between the rotating rod and the limiting bushing; Figure 4 This is a second structural schematic diagram showing the positional relationship between the rotating rod and the limiting bushing; Figure 5 This is a structural diagram of the turntable components; Figure 6 This is a structural diagram of the lower part of the hidden base of the turntable component; Figure 7 This is a schematic diagram of the first structure of the turntable component, showing the hidden support plate and lower half. Figure 8 This is a schematic diagram of the second structure behind the hidden support plate and lower half of the turntable component; In the diagram, 1. Inspection frame; 2. Inspection truss; 3. Inspection block; 4. Laser probe; 5. Flipping frame; 6. Slide rail; 7. Lifting platform; 8. Vertical groove; 9. Rotating rod; 10. Electromagnetic chuck; 11. Limiting sleeve; 12. External key; 13. Keyway; 14. Tilting wheel; 15. Tilting wheel; 16. Picking block; 17. Picking suction plate; 18. Unloading block; 19. Unloading suction plate; 20. Base; 21. Turntable; 22. Workstation. 23. Main shaft; 24. Middle support plate; 25. Rail; 26. Frame block; 27. Drive shaft; 28. Drive wheel; 29. ​​Shaft wheel; 30. Upper rail; 31. Upper movable block; 32. Electromagnetic block; 33. Tension spring; 34. Connecting rod; 35. Lower seat; 36. Lower rail; 37. Lower movable block; 38. Output wheel; 39. Input wheel; 40. Belt; 41. Tension spring; 42. Guide rod; 43. Central shaft; 44. Upper seat. Detailed Implementation

[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0019] like Figure 1 and Figure 2 As shown, this precision-positioning electric grinder head flipping and polishing equipment is characterized by: including a frame and a turntable component, a material handling component, a material unloading component, a positioning detection component, a forward polishing component (not shown in the figure), a reverse polishing component (not shown in the figure), and a flipping component mounted on the frame. The turntable component has 6 stations, which are arranged clockwise as follows: material loading station, forward polishing station, flipping station, reverse polishing station, unloading station, and positioning station. The material handling component, unloading component, positioning detection component, forward polishing component, reverse polishing component, and flipping component are respectively located at the material loading station, unloading station, positioning station, forward polishing station, reverse polishing station, and flipping station.

[0020] The positioning and detection component includes a detection frame 1 fixed relative to the frame, a detection truss 2 set on the detection frame 1, a detection block 3 that can slide on the detection truss 2, and a detection hydraulic cylinder fixed on the detection block 3. The piston rod of the detection hydraulic cylinder is connected to the detection frame 1 and drives the displacement of the detection block 3 during the extension and retraction process. The detection block 3 is equipped with multiple laser probes 4, which are set downward and used to detect whether the positioning station is accurately positioned.

[0021] The detection process can be carried out using the following method: First, a marker can be fixedly set at each workpiece placement station on the turntable component. In the working state (meaning each workpiece placement station on the turntable component is precisely within the six working stations), the marker should be directly below laser probe 4. Then, after each station switch, laser probe 4 detects and collects data from the marker below. If the probe reports that it has successfully collected the marker, it proves that the workpiece is completely in that station. If the probe reports that it has not collected the marker or the collection is incomplete, it proves that the workpiece has shifted. The laser detector can be connected to an external alarm. When the workpiece shifts, the alarm will sound, prompting a technician to correct the deviation. Therefore, with this design, this equipment can achieve very high-precision positioning during each station switch.

[0022] like Figure 3 and Figure 4 As shown, the flipping component includes a flipping frame 5 fixed relative to the machine frame and a lifting platform 7 that is slidably mounted on the flipping frame 5 via a slide rail 6. A vertical groove 8 is formed in the center of the flipping frame 5, and the interior of the flipping frame 5 is hollow and communicates with the vertical groove. A cavity communicating with the vertical groove is formed on the back of the lifting platform 7. A rotating rod 9 is rotatably mounted on the front of the lifting platform 7. A latch is formed on the outer end face of the rotating rod 9, and the latch has two pairs of electromagnetic claws 10. When energized, the electromagnetic claws 10 have strong magnetism sufficient to attract the metal grinding head from the bottom. A gap is left between the two sets of electromagnetic claws 10. A limiting bushing 11 is fixedly mounted inside the lifting platform 7. The upper part of the middle section of the limiting bushing 11 is cut off by 180 degrees to form a half-shaft. The rotating rod 9 is rotatably mounted... Inside the limiting bushing 11, an external key 12 is fixedly provided on the rotating rod 9. Keyways 13 matching the size of the external key 12 are opened at both ends of the half shaft. A flipping drive (not shown in the figure) is fixedly provided at the hollow high position inside the flipping frame 5. A flipping wheel 14 is fixedly sleeved on the output end of the flipping drive. A flipped wheel 15 is fixedly sleeved on the rotating rod 9. When the rotating rod 9 moves to the highest position with the lifting platform 7, the flipping wheel 14 and the flipped wheel 15 are in contact and can transmit power. Each time they contact, the flipping wheel 14 rotates forward and reverse in sequence, causing the flipped wheel 15 to rotate forward and reverse with the rotating rod 9. The forward and reverse rotation process continues until the external key 12 flips from being embedded in one side keyway 13 to being embedded in the other side keyway 13.

[0023] The flip drive is usually implemented by connecting a motor with forward and reverse rotation capabilities to a gearbox. The external key 12 and keyway 13 serve as a limiting function for 180-degree flipping.

[0024] The external key 12 is made of a weighted material, so that the external key 12 can have a stable center of gravity on either side when flipped.

[0025] When the lever 9 is flipped so that the external key 12 is embedded in the key slot 13 on either side, the high weight of the lever 9 itself will cause the entire lever 9 to self-lock in the selection direction, thus improving stability.

[0026] The keyway 13 is longer than the outer key 12, so that the outer key 12 can move within the keyway 13 but cannot detach. The inner end of the rotating rod 9 is provided with a transition hole. The vertical groove of the flipping frame 5 is provided with a cylinder frame (not shown in the figure) for lifting and lowering. A telescopic cylinder (not shown in the figure) is fixed on the cylinder frame. The piston rod of the telescopic cylinder is connected to the transition hole.

[0027] This design allows the rotating rod 9 to extend and retract within the limiting sleeve 11. In other words, the grinding head is no longer limited to the upward or downward displacement function, but also has the ability to extend and retract forward and backward, providing a choice of movement. This function is useful when the equipment needs to add other processing processes, such as flipping, and when an additional process of visual inspection of both the front and back sides of the grinding head is required, or when the position of the grinding head needs to be changed.

[0028] The material handling component includes a material handling frame fixed relative to the frame, a material handling gantry mounted on the material handling frame, a material handling block 16 that can slide on the material handling gantry, and a material handling suction plate 17 mounted on the material handling block 16. A material handling hydraulic cylinder is fixed on the material handling frame. The piston rod of the material handling hydraulic cylinder is connected to the material handling block 16 to realize the displacement of the material handling block 16 on the material handling gantry. The material handling suction plate 17 and the material handling block 16 are provided with a material handling lifting drive cylinder. When the material handling suction plate 17 is energized, it has strong magnetism sufficient to attract the grinding head made of metal.

[0029] The unloading component includes an unloading rack fixed relative to the frame, an unloading truss mounted on the unloading rack, an unloading block 18 that can slide on the unloading truss, and an unloading suction plate 19 mounted on the unloading block. An unloading hydraulic cylinder is fixed on the unloading rack, and the piston rod of the unloading hydraulic cylinder is connected to the unloading block to realize the displacement of the unloading block on the unloading truss. The unloading suction plate 19 and the unloading block 18 are equipped with unloading lifting drive cylinders. When the unloading suction plate 19 is energized, it has strong magnetism sufficient to attract the grinding head made of metal.

[0030] like Figures 5-8As shown, the turntable component includes a base 20 with an internal cavity, a disc-shaped turntable 21 rotatably mounted above the base 20 via a central shaft 43, and a switching drive unit disposed within the cavity for providing rotation of the turntable 21; the base 20 has the aforementioned 6 workstations above it, and the turntable 21 has 6 centrally symmetrical workstations 22 for placing grinding heads, and each workstation has a main shaft 23 fixed to its bottom and rotatably connected to the turntable 21 via the main shaft 23.

[0031] The switching drive is generally achieved by using a control motor in conjunction with a gearbox to ensure that the output of the switching drive can output 1 / 6 turn of rotation in a single operation, which means switching the rotation angle of one workstation.

[0032] The positive and negative polishing components can generally achieve their functions by using a polishing wheel that can be raised and lowered. In order to increase the polishing surface, the polishing wheel can be set horizontally. Since it is a conventional component, it is not shown in the view of this invention.

[0033] A middle support plate 24 is provided at the middle height of the cavity of the base 20. The cavity of the base 20 is provided with a fixed-point drive component for driving the main spindle 23 to rotate in the positive polishing position and the negative polishing position. The fixed-point drive component includes a rail 25 fixedly installed horizontally in the base 20, two sets of slidably symmetrically installed on the rail and with shaft holes in the vertical direction, and two drive shafts 27 that are freely rotatably installed in the shaft holes of the two rails 26. A drive wheel 28 is fixedly sleeved at the top of the drive shaft 27, and a shaft wheel 29 with the same plane as the drive wheel 28 is fixedly sleeved at the bottom of the main spindle 23. When the main spindle 23 rotates with the turntable 21 to the positive polishing position and the negative polishing position, the shaft wheel 29 at this position is in contact with the drive wheel 28. A power component is provided at the bottom of the drive shaft 27.

[0034] An upper rail 30 is fixed longitudinally above the middle support plate 24. An upper movable block 31 slides on the upper rail 30. The middle support plate 24 also has an upper seat 44 and an electromagnetic block 32 that has strong magnetism when energized. The electromagnetic block 32 is located between the upper rail 30 and the central shaft 43. The upper rail 30 is located between the upper seat 44 and the electromagnetic block 32. The upper movable block 31 is made of magnetic material. The start / stop switch of the electromagnetic block 32 is synchronized with the start / stop switch of the switching drive component. A tension spring 33 is provided between the upper seat 44 and the upper movable block 31. The tension spring 33 makes the upper movable block 31... When the upper movable block 31 is not subjected to external force, it tends to move closer to the upper seat 44. When the electromagnetic block 32 is energized, the attraction force of the upper movable block 31 is greater than the traction force of the tension spring 33 on the upper movable block 31. The frame block 26 is provided with a first hinge shaft, and the upper movable block 31 is provided with a second hinge shaft. The two first hinge shafts and the second hinge shaft on the two frame blocks 26 are connected by two sets of symmetrical connecting rods 34. After the upper movable block 31 approaches the upper seat 44, the two connecting rods 34 push the two frame blocks 26 to separate from each other until the drive wheel 28 and the axle wheel 29 are tightly engaged.

[0035] Because the start / stop switch of the electromagnetic block 32 is synchronized with the start / stop switch of the switching drive, and because the attraction force of the electromagnetic block 32 on the upper movable block 31 when it is energized is greater than the traction force of the tension spring 33 on the upper movable block 31, when the central shaft 43 rotates 1 / 6 revolution to switch positions, the electromagnetic block 32 will be energized and generate strong magnetism as soon as the switching drive is started. Then, the upper movable block 31 will be attracted to the electromagnetic block 32 once. Under the pulling action of the connecting rods 34 on both sides, the two frame blocks 26 will move closer to each other. That is, the drive wheel 28 above the drive shaft 27 inside the frame block 26 will retract inward and no longer fit with the shaft wheel 29 here, but will maintain a large distance. In this way, the shaft wheel 29 here will not be interfered with by the drive wheel 28 during the rotation of the turntable 21.

[0036] The power unit includes a lower seat 35 and a lower rail 36 fixed to the bottom surface of the middle support plate 24, and a lower movable block 37 slidably disposed on the lower rail 36. The lower rail 36 is arranged longitudinally. A power motor is provided inside the lower seat 35. An output wheel 38 is fixedly sleeved on the output end of the power motor. An input wheel 39 with the same plane as the output wheel 38 is fixedly sleeved on the bottom end of the drive shaft 27. A belt 40 is tensioned between the input wheel 39 and the output wheel 38 of the two drive shafts 27. A tension spring 41 is provided between the lower seat 35 and the lower movable block 37. The tension spring 41 pushes the lower movable block 37 away from the lower seat 35 until the belt 40 is taut.

[0037] A guide rod 42 is erected in the center of the workstation, and the upper end of the guide rod 42 has a beveled rounded corner.

[0038] The center of the disc-shaped grinding head is usually provided with a mating hole. The grinding head can be fixed on the output shaft of the electric grinder through this mating hole. If the size of the guide rod 42 is set to match the mating hole, then when the mating hole of the grinding head is fitted into the guide rod 42, the grinding head can be released directly. The grinding head will automatically descend and stick to the worktable after being fitted onto the top of the guide rod 42. Moreover, because the polishing wheel of the polishing equipment needs to polish the surface of the grinding head, friction will be generated during the contact between the polishing wheel and the surface of the grinding head. If the grinding head is not fixed, it will deviate or even fly off under the friction. The guide rod 42 can then restrain the grinding head.

[0039] In addition, the gap formed by the two pairs of electromagnetic claws 10 can also pass through the guide rod 42. Then, during the retraction of the electromagnetic claws 10 along with the rotating rod 9, the two pairs of electromagnetic claws 10 will not collide with the guide rod 42 when passing through it due to the existence of the gap. Since the two pairs of electromagnetic claws 10 hold the grinding head from the bottom, when the electromagnetic claws 10 rotate 180 degrees, the original grinding head will rotate from the bottom surface to the top surface of the electromagnetic claws 10. Therefore, even after the electromagnetic claws 10 lose power and lose their strong magnetism, they cannot remove the grinding head that is on the top surface. Thus, the two pairs of electromagnetic claws 10 can first move the grinding head down to the center hole of the grinding head and pass it into the guide rod 42. In this way, the circumferential direction of the grinding head is restricted by the guide rod 42. Then, after the two pairs of electromagnetic claws 10 lose power, they are removed from the bottom of the grinding head, and the grinding head will fall down onto the worktable along the guide rod 42.

[0040] The bottom surface of the workstation is equipped with an electromagnetic plate that has strong magnetism when energized.

[0041] Considering that most grinding heads are made of metal, the electromagnetic plate forms a strong magnet after being energized, which can firmly attract the grinding head, thus fixing the grinding head on the worktable.

[0042] The various types of rotary and sliding connections mentioned above are all limiting descriptions. A rotary connection is defined as two parts that can rotate relative to each other, but only rotation. Any other movement is impossible under other unmentioned but existing limiting structures. Therefore, two objects that can rotate relative to each other cannot perform any movement other than the kinematic pairs in the direction of rotation. The same applies to sliding movement.

[0043] It should be understood that in the claims and description of this invention, all instances of "comprising..." should be understood as having an open meaning, that is, their meaning is equivalent to "containing at least...", and should not be understood as having a closed meaning, that is, their meaning should not be understood as "containing only...".

[0044] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A precision-positioning electric grinder head flipping and polishing device, characterized in that: The machine includes a frame and a turntable assembly, a material handling assembly, a material unloading assembly, a positioning and detection assembly, a front polishing assembly, a back polishing assembly, and a flipping assembly mounted on the frame. The turntable assembly has six stations, which are arranged clockwise as follows: material loading station, front polishing station, flipping station, back polishing station, unloading station, and positioning station. The material handling assembly, unloading assembly, positioning and detection assembly, front polishing assembly, back polishing assembly, and flipping assembly are located at the material loading station, unloading station, positioning station, front polishing station, back polishing station, and flipping station, respectively. The rotary table assembly includes a base with an internal cavity, a disc-shaped rotary table rotatably mounted above the base via a central shaft, and a switching drive unit disposed within the cavity to provide rotation for the rotary table. Above the base are the aforementioned six workstations. Six workstations for mounting grinding heads are symmetrically arranged on the rotary table, each workstation having a fixed spindle at its bottom, which rotatably connects to the rotary table. A central support plate is located at the middle height of the base cavity. Within the base cavity are fixed drive units for rotating the spindles at the forward and reverse polishing workstations. The fixed drive units include a horizontally fixed rail within the base, two sets of slidably symmetrically mounted blocks with vertically oriented shaft holes on the rails, and two freely rotatable drive shafts within the shaft holes of the two blocks. A drive wheel is fixedly fitted at the top of each drive shaft, and a shaft wheel coplanar with the drive wheel is fixedly fitted at the bottom of the spindle. When the spindle rotates with the rotary table to the forward and reverse polishing workstations… The axle wheel is in contact with the drive wheel, and the bottom of the drive shaft is equipped with a power component. A top rail is fixed longitudinally above the middle support plate, and an upper movable block slides on the top rail. The middle support plate is also equipped with an upper seat and an electromagnetic block that has strong magnetism when energized. The electromagnetic block is located between the top rail and the central shaft, and the top rail is located between the upper seat and the electromagnetic block. The upper movable block is made of magnetic material. The start / stop switch of the electromagnetic block is synchronized with the start / stop switch of the switching drive component. A tension spring is provided between the upper seat and the upper movable block. The tension spring causes the upper movable block to tend to pull towards the upper seat when there is no external force. The attraction force of the electromagnetic block on the upper movable block when energized is greater than the traction force of the tension spring on the upper movable block. A first hinge shaft is provided on the frame block, and a second hinge shaft is provided on the upper movable block. The two first hinge shafts and the second hinge shaft on the two frame blocks are connected by two sets of symmetrical connecting rods. After the upper movable block approaches the upper seat, the two connecting rods push the two frame blocks to separate from each other until the drive wheel and the axle wheel are tightly in contact.

2. The precision-positioning electric grinder head flipping and polishing equipment according to claim 1, characterized in that: The positioning and detection component includes a detection frame fixed relative to the machine frame, a detection truss mounted on the detection frame, a detection block that can slide on the detection truss, and a detection hydraulic cylinder fixed on the detection block. The piston rod of the detection hydraulic cylinder is connected to the detection frame and drives the displacement of the detection block during the extension and retraction process. The detection block is equipped with multiple laser probes, which are set downwards and used to detect whether the positioning station is accurately positioned.

3. The precision-positioning electric grinder head flipping and polishing equipment according to claim 2, characterized in that: The flipping component includes a flipping frame fixed relative to the machine frame and a lifting platform that is slidably mounted on the flipping frame via a slide rail. A vertical groove is formed in the center of the flipping frame, which is hollow and communicates with the vertical groove. A cavity communicating with the vertical groove is formed on the back of the lifting platform. A rotating rod is rotatably mounted on the front of the lifting platform, and a latch is formed on the outer end face of the rotating rod. The latch has two pairs of electromagnetic claws. When energized, the electromagnetic claws have strong magnetism sufficient to attract a metal grinding head from the bottom. A gap is left between the two sets of electromagnetic claws. A limiting bushing is fixed inside the lifting platform, and the upper part of the middle section of the limiting bushing is cut off by 180 degrees to form a half-shaft. The rotating rod is rotatably mounted inside the limiting bushing. An external key is fixedly mounted on the rotating rod. Keyways matching the size of the external key are opened at both ends of the half-shaft. A flipping drive is fixedly mounted at the hollow high position inside the flipping frame. A flipping wheel is fixedly mounted on the output end of the flipping drive. A flipped wheel is fixedly mounted on the rotating rod. When the rotating rod moves to the highest position with the lifting platform, the flipping wheel and the flipped wheel are in contact and can transmit power. Each time they make contact, the flipping wheel rotates forward and backward in sequence, causing the flipped wheel to rotate forward and backward with the rotating rod. The forward and reverse rotation process continues until the external key flips from being embedded in one keyway to being embedded in the other keyway.

4. The precision-positioning electric grinder head flipping and polishing equipment according to claim 3, characterized in that: The external key is made of a weighted material, so that the external key can have a stable center of gravity on any side when flipped.

5. A precision-positioning electric grinder head flipping and polishing device according to claim 3 or 4, characterized in that: The keyway length is greater than the outer key, allowing the outer key to move within the keyway but not to detach. The inner end of the rotating rod is provided with an adapter hole. The vertical slot of the flipping frame is equipped with a cylinder frame for lifting and lowering. A telescopic cylinder is fixed on the cylinder frame, and the piston rod of the telescopic cylinder is connected to the adapter hole.

6. The precision-positioning electric grinder head flipping and polishing equipment according to claim 1, characterized in that: The material handling component includes a material handling frame fixed relative to the frame, a material handling truss mounted on the material handling frame, a material handling block that can slide on the material handling truss, and a material handling suction plate mounted on the material handling block. A material handling hydraulic cylinder is fixed on the material handling frame. The piston rod of the material handling hydraulic cylinder is connected to the material handling block to realize the displacement of the material handling block on the material handling truss. The material handling suction plate and the material handling block are equipped with a material handling lifting drive cylinder. When the material handling suction plate is energized, it has strong magnetism sufficient to attract the grinding head made of metal.

7. The precision-positioning electric grinder head flipping and polishing equipment according to claim 1, characterized in that: The unloading component includes an unloading frame fixed relative to the frame, an unloading truss mounted on the unloading frame, an unloading block that can slide on the unloading truss, and an unloading suction plate mounted on the unloading block. An unloading hydraulic cylinder is fixed on the unloading frame, and the piston rod of the unloading hydraulic cylinder is connected to the unloading block to realize the displacement of the unloading block on the unloading truss. The unloading suction plate and the unloading block are equipped with unloading lifting drive cylinders. When the unloading suction plate is energized, it has strong magnetism sufficient to attract the grinding head made of metal.

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