A tool positioning structure and a fan stator machining machine tool

Abstract

The application relates to the technical field of machining tools, in particular to a cutter positioning structure and a fan stator machining tool, which comprises a base, a fixing mechanism is fixedly installed on the top outer wall of the base, a first sliding groove and an electric telescopic rod are fixedly connected to the top outer wall of the base, the inner wall of the first sliding groove is slidably connected with a sliding seat, the outer wall of one side of the sliding seat close to the electric telescopic rod is fixedly connected with the electric telescopic rod, a vertical displacement mechanism is arranged outside the sliding seat, the vertical displacement mechanism comprises a circular hole, a vertical motor, a vertical reciprocating lead screw and a vertical moving cylinder, and the beneficial effect is that: through the cooperation of the telescopic assembly and the horizontal moving cylinder, when the connecting block is in contact with the fixing mechanism, the horizontal motor is started to drive the cutter to slowly move towards the fixing mechanism, the problem that the horizontal displacement mechanism of the existing traditional cutter positioning structure moves quickly and causes the cutter to be damaged is solved, and the cutter can be switched from fast horizontal movement to slow horizontal movement when the cutter is about to contact the workpiece.

Description

Technical Field

[0001] This invention relates to the field of machine tool technology, specifically to a tool positioning structure and a fan stator machining machine. Background Technology

[0002] During the processing and assembly of the stator assembly, bearing positions need to be machined in the inner hole of the stator to assemble the bearings. Then the rotor passes through the bearings, thereby realizing the rotation of the rotor relative to the stator seat.

[0003] In the existing technology, when machining the internal cavity of a fan stator, the fan stator is first fixed by a fixing mechanism, and then the tool is quickly moved to the workpiece to be machined by a lateral displacement mechanism. However, the traditional tool positioning structure has a fast movement speed and is not easy to control. The tool and the stator may collide, resulting in tool damage and stator scrap.

[0004] Therefore, we need a tool positioning structure and a fan stator machining machine to solve the problem of tool damage caused by the rapid lateral displacement mechanism of the existing traditional tool positioning structure. It can switch from rapid lateral movement to slow lateral movement when the tool is about to contact the workpiece. Summary of the Invention

[0005] The purpose of this invention is to provide a tool positioning structure and a fan stator machining machine tool to solve the problem of tool damage caused by the rapid lateral displacement mechanism of the traditional tool positioning structure mentioned in the background art. This invention provides a tool positioning structure and a fan stator machining machine tool that can switch from rapid lateral movement to slow lateral movement when the tool is about to contact the workpiece.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a tool positioning structure, including a base, a fixing mechanism fixedly installed on the top outer wall of the base, a first sliding groove and an electric telescopic rod fixedly connected to the top outer wall of the base, a sliding block slidably connected to the inner wall of the first sliding groove, the outer wall of the sliding block near the electric telescopic rod being fixedly connected to the electric telescopic rod, a vertical displacement mechanism provided outside the sliding block, the vertical displacement mechanism including a circular hole, a vertical motor, a vertical reciprocating screw and a vertical moving cylinder, a moving seat fixedly connected to the top outer wall of the vertical moving cylinder, and a cavity opened inside the moving seat. A transverse motor is fixedly connected to the inner wall of the cavity. The output shaft of the transverse motor is fixedly connected to a transverse reciprocating screw. A transverse moving cylinder is connected to the outer wall of the transverse reciprocating screw by ball bearings. A moving plate is fixedly connected to the outer wall of the transverse moving cylinder at the end away from the transverse motor. A main shaft is fixedly connected to the outer wall of the moving plate at the side away from the transverse moving cylinder. A blade body is detachably connected to the outer wall of the main shaft at the side away from the transverse moving cylinder. A telescopic assembly is provided on the outer wall of the moving plate at the side of the transverse moving cylinder. The telescopic assembly includes two connecting plates, a circular groove, a sliding telescopic rod, a return spring, and a connecting block. The connecting block is closer to the fixing mechanism than the blade body.

[0007] Preferably, two rectangular grooves are symmetrically formed on the outer wall of the moving plate away from the transverse moving cylinder. A slider is slidably connected to the inner wall of the rectangular groove. The outer wall of the slider is fixedly connected to the outer wall of the connecting plate. The two connecting plates are arranged on both sides of the blade body.

[0008] Preferably, the circular groove is formed on the outer wall of the connecting plate on the side away from the slider, the inner wall of the circular groove is fixedly connected to the outer wall of one end of the sliding telescopic rod and the return spring, and the outer wall of the end of the sliding telescopic rod and the return spring away from the circular groove is fixedly connected to the connecting block.

[0009] Preferably, the circular hole is formed on the top outer wall of the slide block, the inner wall of the circular hole is fixedly connected to the outer wall of the vertical motor, the output shaft of the vertical motor is fixedly connected to the vertical reciprocating screw, and the outer wall of the vertical reciprocating screw is ball-bearing connected to the vertical moving cylinder.

[0010] Preferably, the outer wall of the movable plate near the movable seat and the bottom outer wall of the movable seat are both provided with circular holes. A horizontal limiting rod or a vertical limiting rod is movably mounted on the inner wall of the circular hole. The outer wall of the horizontal limiting rod away from the circular hole is fixedly connected to the outer wall of the movable seat, and the bottom outer wall of the vertical limiting rod is fixedly connected to the top outer wall of the slide.

[0011] Preferably, the outer wall of the movable plate away from the movable seat has a second sliding groove. A bearing is fixedly connected to one inner wall of the second sliding groove. A circular opening is provided on the other inner wall of the second sliding groove, with the two inner walls fixedly connected. A double-acting screw is fixedly connected to the inner bushing of the bearing. A rotating handle is fixedly connected to the outer wall of the double-acting screw away from the bearing through the circular opening. Two moving blocks are symmetrically ball-bearing connected to the outer wall of the double-acting screw. The outer wall of the moving block away from the inner wall of the second sliding groove is fixedly connected to the outer wall of the connecting plate near the rectangular groove.

[0012] Preferably, a connecting shaft is fixedly connected to the outer wall of the connecting plate near the blade body, and an arc-shaped clamping member is fixedly connected to the outer wall of the connecting shaft away from the connecting plate.

[0013] A machine tool for machining wind turbine stators includes the tool positioning structure described above.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: Through the cooperation of the telescopic component and the transverse moving cylinder, when the connecting block contacts the fixed mechanism, the transverse motor is started. The rotation of the transverse motor drives the transverse reciprocating screw to rotate. The rotation of the transverse reciprocating screw will drive the transverse moving cylinder to move slowly towards the fixed mechanism until the tool body reaches the required position. As the tool body moves, the return spring is compressed, avoiding the sliding telescopic rod from being used for limiting, ensuring that the return spring moves in a straight line. After the processing is completed, the electric telescopic rod drives the moving seat to move backward, and the return spring immediately resets, waiting for the next processing. This solves the problem of tool damage caused by the rapid movement of the transverse displacement mechanism in the existing traditional tool positioning structure. It can switch from rapid transverse movement to slow transverse movement when the tool is about to contact the workpiece. Attached Figure Description

[0015] Figure 1 This is a front view of the entire invention;

[0016] Figure 2 This is a right view of the present invention;

[0017] Figure 3 This is a top view of the present invention;

[0018] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0019] Figure 5 This is a schematic diagram of the left rear direction structure of the present invention;

[0020] Figure 6 This is a schematic diagram of the left front direction structure of the present invention;

[0021] Figure 7 for Figure 6 Enlarged schematic diagram of the structure at point B;

[0022] Figure 8 This is a schematic diagram of the scraper structure of the present invention;

[0023] Figure 9 This is a rear view of the present invention;

[0024] Figure 10 for Figure 9 A magnified schematic diagram of the mechanism at point C.

[0025] In the diagram: 1. Base; 2. Fixing mechanism; 3. First slide groove; 4. Slide seat; 5. Electric telescopic rod; 6. Moving seat; 7. Cavity; 8. Horizontal motor; 9. Horizontal reciprocating screw; 10. Horizontal moving cylinder; 11. Horizontal limiting rod; 12. Main spindle; 13. Tool body; 14. Second slide groove; 15. Bearing; 16. Bidirectional screw; 17. Rotating handle; 18. Moving block; 19. Connecting plate; 20. Sliding telescopic rod; 21. Return spring; 22. Connecting block; 23. Sensor; 24. Buffer airbag; 25. Magnet; 26. Scraper; 27. Circular hole; 28. Vertical motor; 29. ​​Vertical reciprocating screw; 30. Vertical moving cylinder; 31. Circular groove; 32. Rectangular groove; 33. Slider; 34. Connecting shaft; 35. Arc-shaped clamping part; 36. Vertical limiting rod; 37. Moving plate. Implementation

[0026] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] In the description of this invention, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "a," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] For purposes of simplicity and illustration, the principles of the embodiments are described primarily by way of example. In the following description, numerous specific details are set forth to provide a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures have not been described in detail to avoid unnecessarily obscuring these embodiments. Furthermore, all embodiments can be used in combination with each other. Example

[0030] Please see Figures 1 to 10This invention provides a technical solution: a tool positioning structure, including a base 1, a fixing mechanism 2 fixedly installed on the top outer wall of the base 1, a first sliding groove 3 and an electric telescopic rod 5 fixedly connected to the top outer wall of the base 1, a slide block 4 slidably connected to the inner wall of the first sliding groove 3, the outer wall of the slide block 4 near the electric telescopic rod 5 fixedly connected to the electric telescopic rod 5, a vertical displacement mechanism provided outside the slide block 4, the vertical displacement mechanism including a circular hole 27, a vertical motor 28, a vertical reciprocating screw 29 and a vertical moving cylinder 30, a moving seat 6 fixedly connected to the top outer wall of the vertical moving cylinder 30, and a cavity 7 opened inside the moving seat 6. A transverse motor 8 is fixedly connected to the inner wall of cavity 7. A transverse reciprocating screw 9 is fixedly connected to the output shaft of the transverse motor 8. A transverse moving cylinder 10 is ball-bearing connected to the outer wall of the transverse reciprocating screw 9. A moving plate 37 is fixedly connected to the outer wall of the end of the transverse moving cylinder 10 away from the transverse motor 8. A main shaft 12 is fixedly connected to the outer wall of the side of the moving plate 37 away from the transverse moving cylinder 10. A blade body 13 is detachably connected to the outer wall of the main shaft 12 away from the transverse moving cylinder 10. A telescopic assembly is provided on the outer wall of the side of the moving plate 37 of the transverse moving cylinder 10. The telescopic assembly includes two connecting plates 19, a circular groove 31, a sliding telescopic rod 20, and a return spring. 21. Connecting block 22: The connecting block 22 is closer to the fixing mechanism 2 than the blade body 13. Two rectangular slots 32 are symmetrically formed on the outer wall of the moving plate 37 away from the transverse moving cylinder 10. A slider 33 is slidably connected to the inner wall of the rectangular slot 32. The outer wall of the slider 33 is fixedly connected to the outer wall of the connecting plate 19. The two connecting plates 19 are located on both sides of the blade body 13. A circular slot 31 is formed on the outer wall of the connecting plate 19 away from the slider 33. The inner wall of the circular slot 31 is fixedly connected to the outer wall of one end of the sliding telescopic rod 20 and the return spring 21. The outer wall of the end of the sliding telescopic rod 20 and the return spring 21 away from the circular slot 31 is connected to the connecting block. 22. A circular hole 27 is opened on the top outer wall of the slide 4. The inner wall of the circular hole 27 is fixedly connected to the outer wall of the vertical motor 28. The output shaft of the vertical motor 28 is fixedly connected to the vertical reciprocating screw 29. The outer wall of the vertical reciprocating screw 29 is ball-connected to the vertical moving cylinder 30. The outer wall of the moving plate 37 near the moving seat 6 and the bottom outer wall of the moving seat 6 are both provided with circular holes. The inner wall of the circular hole is movably connected to a horizontal limiting rod 11 or a vertical limiting rod 36. The outer wall of the horizontal limiting rod 11 away from the circular hole is fixedly connected to the outer wall of the moving seat 6. The bottom outer wall of the vertical limiting rod 36 is fixedly connected to the top outer wall of the slide 4.

[0031] The fixed mechanism 2 holds the stator inside. When the electric telescopic rod 5 is activated, it extends outward, causing the slide block 4 to move closer to the fixed mechanism 2. The sliding motion causes the moving seat 6 to move quickly laterally. The vertical displacement mechanism causes the moving seat 6 to move up and down. The movement of the moving seat 6 causes the tool body 13 and the connecting block 22 to move. When the connecting block 22 contacts the fixed mechanism 2, the horizontal motor 8 is activated. The rotation of the horizontal motor 8 causes the horizontal reciprocating screw 9 to rotate. The rotation of the horizontal reciprocating screw 9 will cause the horizontal moving cylinder 10 to gradually move slowly closer to the fixed mechanism 2 until the tool body 13 reaches the required position. As the tool body 13 moves, the return spring 21 is compressed, preventing the sliding telescopic rod 20 from being used for limiting and ensuring that the return spring 21 moves in a straight line. After processing is completed, the electric telescopic rod 5 causes the moving seat 6 to move backward, and the return spring 21 immediately returns to its original position, waiting for the next processing. This invention solves the problem of tool damage caused by the rapid movement of the horizontal displacement mechanism in the existing traditional tool positioning structure by cooperating the telescopic component and the horizontal moving cylinder 10. It can switch from rapid horizontal movement to slow horizontal movement when the tool is about to contact the workpiece. Example

[0032] See attached document Figures 1 to 10 Based on Embodiment 1, in order to fix the tool body 13 and avoid loosening during processing that would affect the workpiece processing, a second slide groove 14 is provided on the outer wall of the moving plate 37 away from the moving seat 6. A bearing 15 is fixedly connected to the inner wall of one side of the second slide groove 14. A circular opening is provided on the inner wall of the other side of the second slide groove 14, which is fixedly connected to the inner walls of the two sides. A bidirectional lead screw 16 is fixedly connected to the inner bushing of the bearing 15. A rotating handle 17 is fixedly connected to the outer wall of the end of the bidirectional lead screw 16 away from the bearing 15 through the circular opening. Two moving blocks 18 are symmetrically ball-connected to the outer wall of the bidirectional lead screw 16. The outer wall of the moving block 18 away from the inner wall of the second slide groove 14 is fixedly connected to the outer wall of the connecting plate 19 near the rectangular groove 32. A connecting shaft 34 is fixedly connected to the outer wall of the connecting plate 19 near the tool body 13. An arc-shaped clamping member 35 is fixedly connected to the outer wall of the connecting shaft 34 away from the connecting plate 19.

[0033] Rotating the lever 17 drives the bidirectional lead screw 16 to rotate. The rotation of the bidirectional lead screw 16 causes the two moving blocks 18 to move closer or further apart. When the moving blocks 18 move closer, the two connecting plates 19 move closer, meaning the two arc-shaped clamping members 35 move closer to the tool body 13, clamping and fixing the tool body 13. When it is necessary to change to a different tool body 13 for machining, the movement of the moving blocks 18 can drive the arc-shaped clamping members 35 to clamp and fix tool bodies 13 of different specifications. The arc-shaped clamping members 35 are used to clamp and fix tool bodies 13 of different specifications on the surface of the damaged tool body 13. While increasing friction, the clamping is more stable. The arc-shaped clamping member 35 is more compatible with the tool body 13 and has a larger contact area with the tool body 13, which can more effectively fix the tool body 13. The present invention can clamp tool bodies 13 of different specifications through the bidirectional lead screw 16 and the arc-shaped clamping member 35, further fixing the tool body 13 and avoiding loosening during the processing, which would affect the workpiece processing. It further solves the problem that the lateral displacement mechanism of the existing traditional tool positioning structure moves too fast and causes tool damage. It can switch from fast lateral movement to slow lateral movement when the tool is about to contact the workpiece. Example

[0034] See attached document Figures 1 to 10 Based on Embodiment 2, in order to enable timely start of the transverse motor 8, a sensor 23 and a buffer airbag 24 are fixedly connected to the outer wall of the connecting block 22 near the fixing mechanism 2. The outer wall of the buffer airbag 24 is movably connected to the outer wall of the sensor 23, and the sensor 23 is electrically connected to the transverse motor 8.

[0035] When the buffer airbag 24 comes into contact with the fixing mechanism 2, the buffer airbag 24 will touch the sensor 23. When the sensor 23 senses the buffer airbag 24, it immediately controls the horizontal motor 8 to start, so that the horizontal motor 8 can move in time and quickly change the movement state of the tool body 13. The buffer airbag 24 is used to protect the sensor 23 and prevent the sensor 23 from being damaged by contact with the fixing mechanism 2. The present invention further solves the problem of tool damage caused by the rapid movement of the horizontal displacement mechanism of the existing traditional tool positioning structure through the buffer airbag 24 and the sensor 23. It can switch from rapid horizontal movement to slow horizontal movement when the tool is about to contact the workpiece. Example

[0036] See attached document Figures 1 to 10 Based on Embodiment 3, in order to achieve the cleaning of iron filings, a scraper 26 is fixedly connected to the outer wall of the connecting plate 19 near the main shaft 12, and a magnet plate is fixedly connected to the outer wall of the connecting block 22 near the blade body 13. The outer wall of the magnet plate is movably connected to the outer wall of the scraper 26.

[0037] The magnetic plate 25 can collect the iron wires generated during processing, preventing the iron wires from affecting the processing of the workpiece and causing wear on the tool body 13. When the return spring 21 is squeezed, the magnetic plate 25 will move towards the moving plate 37. As the magnetic plate 25 moves, the scraper 26 will directly scrape off the iron wires on the surface of the magnetic plate 25. The magnetic plate 25 is cleaned to its initial state, waiting for subsequent processing. The present invention further solves the problem of tool damage caused by the rapid movement of the lateral displacement mechanism of the traditional tool positioning structure through the scraper 26 and the magnetic plate 25. It can switch from rapid lateral movement to slow lateral movement when the tool is about to contact the workpiece. Example

[0038] A method for using a fan stator machining machine includes the following steps:

[0039] Step 1: When machining the workpiece, the stator is clamped inside the fixed mechanism 2. The electric telescopic rod 5 is started and extends outward, driving the slide 4 to move closer to the fixed mechanism 2. The sliding motion drives the moving seat 6 to move quickly laterally. The vertical displacement mechanism drives the moving seat 6 to move up and down. The movement of the moving seat 6 drives the tool body 13 and the connecting block 22 to move. When the connecting block 22 contacts the fixed mechanism 2, the horizontal motor 8 is started. The rotation of the horizontal motor 8 drives the horizontal reciprocating screw 9 to rotate. The rotation of the horizontal reciprocating screw 9 will drive the horizontal moving cylinder 10 to move slowly closer to the fixed mechanism 2 until the tool body 13 reaches the required position. As the tool body 13 moves, the return spring 21 is compressed to prevent the sliding telescopic rod 20 from being used for limiting. This ensures that the return spring 21 moves in a straight line. After machining is completed, the electric telescopic rod 5 drives the moving seat 6 to move backward, and the return spring 21 immediately returns to its original position, waiting for the next machining.

[0040] Step 2: By rotating the rotating arm 17, the bidirectional lead screw 16 is driven to rotate. The rotation of the bidirectional lead screw 16 will drive the two moving blocks 18 to move closer or further away from each other. When the moving blocks 18 move closer to each other, the two connecting plates 19 move closer to each other, that is, the two arc-shaped clamping parts 35 move closer to the tool body 13 to clamp and fix the tool body 13. When it is necessary to change to a different tool body 13 to process the workpiece, the movement of the moving blocks 18 closer or further away from each other will drive the arc-shaped clamping parts 35 to clamp and fix the tool bodies 13 of different specifications.

[0041] Step 3: The magnetic sheet 25 can collect the iron wires generated during the processing, preventing the iron wires from affecting the processing of the workpiece and causing wear on the tool body 13. When the return spring 21 is squeezed, the magnetic sheet 25 will move towards the moving plate 37. As the magnetic sheet 25 moves, the scraper 26 will directly scrape off the iron wires on the surface of the magnetic sheet 25. The magnetic sheet 25 is cleaned to its initial state, waiting for subsequent processing.

[0042] Although the illustrative specific embodiments of this application have been described above to enable those skilled in the art to understand this application, this application is not limited to the scope of the specific embodiments. For those skilled in the art, all applications utilizing the concept of this application are protected as long as various variations are within the spirit and scope of this application as defined and determined by the appended claims.

Claims

1. A tool positioning structure comprising a base (1), characterised in that: The outer wall of the top of the base (1) is fixedly connected with a fixing mechanism (2), a first sliding groove (3) and an electric telescopic rod (5), the inner wall of the first sliding groove (3) is slidably connected with a sliding seat (4), one side wall of the sliding seat (4) close to the electric telescopic rod (5) is fixedly connected with the electric telescopic rod (5), the outer part of the sliding seat (4) is provided with a vertical displacement mechanism, the vertical displacement mechanism comprises a round hole (27), a vertical motor (28), a vertical reciprocating lead screw (29) and a vertical moving cylinder (30), the top outer wall of the vertical moving cylinder (30) is fixedly connected with a moving seat (6), the inner part of the moving seat (6) is provided with a cavity (7), the inner wall of the cavity (7) is fixedly connected with a horizontal motor (8), the output shaft of the horizontal motor (8) is fixedly connected with a horizontal reciprocating lead screw (9), the outer wall of the horizontal reciprocating lead screw (9) is ball connected with a horizontal moving cylinder (10), one end of the outer wall of the horizontal moving cylinder (10) away from the horizontal motor (8) is fixedly connected with a moving plate (37), the outer wall of one side of the moving plate (37) away from the horizontal moving cylinder (10) is fixedly connected with a main shaft (12), the outer wall of the main shaft (12) away from the horizontal moving cylinder (10) is detachably connected with a cutter body (13), the outer wall of one side of the moving plate (37) away from the horizontal moving cylinder (10) is provided with a telescopic assembly, the telescopic assembly comprises two connecting plates (19), a circular groove (31), a sliding telescopic rod (20), a reset spring (21) and a connecting block (22), the connecting block (22) is closer to the fixing mechanism (2) than the cutter body (13); The outer wall of one side of the connecting block (22) close to the fixing mechanism (2) is fixedly connected with an inductor (23) and a buffer air bag (24), the outer wall of the buffer air bag (24) is movably connected with the outer wall of the inductor (23), and the inductor (23) is electrically connected with the horizontal motor (8).

2. A tool positioning structure according to claim 1, wherein: The outer wall of one side of the moving plate (37) away from the horizontal moving cylinder (10) is symmetrically provided with two rectangular grooves (32), the inner wall of the rectangular groove (32) is slidably connected with a sliding block (33), and the outer wall of the sliding block (33) is fixedly connected with the outer wall of the connecting plate (19); the two connecting plates (19) are arranged on the two sides of the cutter body (13).

3. A tool positioning structure according to claim 1, wherein: The circular groove (31) is formed in the outer wall of one side of the connecting plate (19) away from the sliding block (33), the inner wall of the circular groove (31) is fixedly connected with the outer wall of one end of the sliding telescopic rod (20) and the reset spring (21), and the outer wall of the other end of the sliding telescopic rod (20) and the reset spring (21) away from the circular groove (31) is fixedly connected with the connecting block (22).

4. A tool positioning structure according to claim 3, wherein: The round hole (27) is formed in the top outer wall of the sliding seat (4), the inner wall of the round hole (27) is fixedly connected with the outer wall of the vertical motor (28), the output shaft of the vertical motor (28) is fixedly connected with the vertical reciprocating lead screw (29), and the outer walls of the vertical moving cylinders (30) are ball connected with the vertical reciprocating lead screw (29).

5. A tool positioning structure according to claim 4, wherein: The outer wall of one side of the moving plate (37) close to the mobile seat (6) and the bottom outer wall of the mobile seat (6) are both provided with a round hole, the inner wall of the round hole movably has a transverse limiting rod (11) or a vertical limiting rod (36), the outer wall of the end of the transverse limiting rod (11) away from the round hole is fixedly connected with the outer wall of the mobile seat (6), and the bottom outer wall of the vertical limiting rod (36) is fixedly connected with the top outer wall of the sliding seat (4).

6. A tool positioning structure according to claim 1, wherein: The outer wall of one side of the moving plate (37) away from the mobile seat (6) is provided with a second sliding groove (14), one side inner wall of the second sliding groove (14) is fixedly connected with a bearing (15), the other side inner wall of the second sliding groove (14) is provided with a circular opening in fixed communication with the two side inner walls, the inner sleeve of the bearing (15) is fixedly connected with a bidirectional lead screw (16), the outer wall of the end of the bidirectional lead screw (16) away from the bearing (15) is fixedly connected with a rotating handle (17) through the circular opening, the outer wall of the bidirectional lead screw (16) is symmetrically connected with two moving blocks (18) through balls, and the outer wall of one side of the moving block (18) away from the inner wall of the second sliding groove (14) is fixedly connected with the connecting plate (19) close to one side of the outer wall of the rectangular groove (32).

7. A tool positioning structure according to claim 1, wherein: The outer wall of one side of the connecting plate (19) close to the cutter body (13) is fixedly connected with a connecting shaft (34), and the outer wall of one side of the connecting shaft (34) away from the connecting plate (19) is fixedly connected with an arc-shaped clamping piece (35).

8. A machine tool for machining a stator of a fan, characterized in that: The cutter positioning structure comprises the cutter positioning structure according to any one of claims 1-7.

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