High-rigidity magnetic adsorption drill bit holder

Abstract

The high-rigidity magnetic adsorption drill bit clamp holder relates to the technical field of drill bit mechanical clamps and comprises a clamping shell, a magnet block and a fixing frame, the magnet block and the fixing frame are installed on the inner wall of the clamping shell, a translation plate is installed on the outer wall of the fixing frame in a penetrating mode, and a clamping arc plate is installed at the end, away from the translation plate, of a protruding rod. A connecting ring frame is fixedly mounted on the inner wall of the translation plate, and a circular plate assembly is mounted at the right end of the connecting ring frame. According to the drill bit fixing device, the magnet block is arranged to provide axial adsorption force for a drill bit when the drill bit is installed, the drill bit is preliminarily fixed, a circular plate assembly, a connecting ring frame, a translation plate and a lifting plate are arranged, meanwhile, clamping arc plates are used for providing radial clamping force for the drill bit, the drill bit is clamped and fixed, and the stable fixing effect on the drill bit is achieved; a traditional screw or bolt fixing mode is replaced, the insertion path of the drill bit does not need to be corrected, meanwhile, the drill bit does not need to be fixed through manual installation of screws or bolts, and the drill bit clamping and installing efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of drill bit mechanical clamping technology, specifically a high-rigidity magnetic adsorption drill bit holder. Background Technology

[0002] A drill bit is a rotating tool with the ability to drill and open holes at its tip. By installing a chuck on a machine tool and fixing the drill bit, holes can be drilled in solid materials. When using a drill bit, it needs to be fixed by a chuck. Existing chucks generally fix the drill bit by inserting it into their interior and then manually installing bolts. In order to ensure that the bolts are aligned with the holes, the insertion path of the drill bit needs to be restricted, which reduces the convenience and efficiency of drill bit installation. At the same time, the single fixing method reduces the clamping stability of the chuck.

[0003] Patent document CN206415673U describes a clamp specifically designed to hold taper shank drill bits, thereby facilitating drill bit replacement.

[0004] The aforementioned patent achieves the installation, fixation, and removal of the drill bit by setting a tapered through hole and a fixing hole in conjunction with the mounting hole on the tapered shank drill bit. However, the aforementioned patent does not take into account the problem that the drill bit needs to be inserted along a certain path to maintain hole alignment, thereby reducing the drill bit clamping and fixing efficiency. At the same time, the fixing effect is singular and requires manual installation of bolts, which further reduces the drill bit fixing efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a high-rigidity magnetic adsorption drill bit holder to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-rigidity magnetic adsorption drill bit holder, comprising a clamping shell, a magnet block and a fixing frame, wherein a magnet block is installed on the inner wall of the right end of the clamping shell, the magnet block is used to adsorb and fix the drill bit, and a fixing frame is installed on the annular inner wall of the clamping shell.

[0007] A sliding plate is installed through the outer wall of the fixed frame, and a lifting plate is slidably connected to the inner wall of the fixed frame. A protrusion 1 is installed on the outer wall of the sliding plate facing the lifting plate. A protruding rod is installed through the outer wall of the lifting plate, and the protruding rod is correspondingly set with the protrusion 1. A clamping arc plate is installed at the end of the protruding rod away from the sliding plate. Spring 1 and Spring 2 are fixedly installed on the inner wall of the fixed frame, and the right end of Spring 1 is fixedly connected to the left outer wall of the lifting plate. One end of Spring 2 is connected to the inner wall of the lifting plate. A connecting ring frame is fixedly installed on the inner wall of the sliding plate. A circular plate assembly is installed at the right end of the connecting ring frame, and the connecting ring frame and the circular plate assembly are located between the fixed frame and the magnet block.

[0008] Preferably, an annular plate is fixedly installed on the inner wall of the right end of the clamping shell, and the annular plate is sleeved on the outside of the magnet block.

[0009] Preferably, both outer walls of the circular plate assembly are connected to sliding rings, and the inner wall of the sliding ring is slidably connected to the outer wall of the clamping shell. The outer wall of the sliding ring is provided with a through hole, and the through hole is located on the left side of the circular plate assembly. A fixing plate is fixedly installed on the inner wall of the through hole. A second protrusion is sleeved on the outer wall of the fixing plate, and the outer wall of the second protrusion is slidably connected to the inner wall of the through hole. A fourth spring is installed on the outer wall of the fixing plate, and the end of the fourth spring away from the fixing plate is fixedly connected to the inner wall of the second protrusion. An external threaded ring is embedded in the outer wall of the clamping shell, and an internal threaded ring is threadedly engaged with the outer wall of the external threaded ring. A rotating cap is fixedly installed on the outer wall of the internal threaded ring.

[0010] Preferably, the end of the second protrusion away from the clamping shell is a conical surface, and the side of the rotating cap facing the circular plate assembly is a conical surface, with the rotating cap slidably connected to the second protrusion.

[0011] Preferably, the inner wall of the sliding ring is embedded with a slot, which is located on the right side of the circular plate assembly. A fixing rod is fixedly installed on the outer wall of the annular plate, and a locking block is sleeved on the outer surface of the fixing rod. The locking block and the annular plate are connected by a spring.

[0012] Preferably, the circular plate assembly includes an inner circular plate and an outer circular ring, the outer circular ring being located outside the inner circular plate, and the inner circular plate and the outer circular ring being fixedly connected by a connecting block.

[0013] Preferably, the inner circular plate is located inside the clamping shell, the outer circular ring is located outside the clamping shell, and the sliding ring is installed on both sides of the outer circular ring.

[0014] Preferably, a fan-shaped through groove is provided through the outer wall of the inner circular plate, and the fan-shaped through groove is located on the left side of the magnet block. A hollow mounting groove 1 is provided inside the inner circular plate, and a hollow mounting groove 2 is provided inside the outer circular ring. A connecting groove is provided through the inside of the connecting block, and the two ends of the connecting groove are respectively connected to the mounting groove 1 and the mounting groove 2.

[0015] Preferably, an insulating baffle and a movable frame are slidably installed on the inner wall of the first mounting groove, and one end of the movable frame facing the center of the inner circular plate is fixedly connected to the insulating baffle. A spring five is fixedly installed on the inner wall of the second mounting groove, and one end of the spring five is fixedly connected to the outer wall of the movable frame. A rotating arc frame is installed through the outer wall of the outer ring, and a sliding frame is connected to the inner wall of the rotating arc frame. The sliding frame is slidably connected to the inner wall of the second mounting groove. A fixing frame is fixedly installed on the outer wall of the outer ring, and a spring six is ​​installed on the outer wall of the fixing frame. The fixing frame penetrates the outer wall of the rotating arc frame.

[0016] Preferably, the insulating baffle is used to block the fan-shaped through slot.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. This invention provides axial attraction to the drill bit during installation by setting a magnet block, thus initially fixing the drill bit. By setting a circular plate assembly, connecting ring frame, translation plate and lifting plate, and using a clamping arc plate to provide radial clamping force to the drill bit, the invention clamps and fixes the drill bit, achieving a stable fixing effect. This replaces the traditional screw or bolt fixing method, eliminates the need to correct the drill bit insertion path, and eliminates the need to manually install screws or bolts to fix the drill bit, thus improving the efficiency of drill bit clamping and installation.

[0019] 2. By installing a sliding ring, a second protrusion, and a rotating nut, after the drill bit is fixed by axial adsorption force and radial clamping force, the rotating nut is moved along the axis of the clamping shell by twisting the rotating nut, and the second protrusion is pushed into the outer wall of the clamping shell. This maintains the positional stability of the circular plate during the use of the drill bit, thereby maintaining the radial clamping force and axial adsorption force when the drill bit rotates, which helps to ensure the clamping stability of the drill bit during use.

[0020] 3. The present invention is equipped with a sliding ring, a fixing rod and a locking block. During the drilling process, the centrifugal force generated by the rotation of the clamping shell pushes the locking block to slide outward along the outer wall of the fixing rod, so that the locking block is embedded in the inner wall of the sliding ring. Thus, during the rotation of the drill bit, the circular plate assembly is doubly fixed, so that the clamping arc plate maintains the clamping and fixing effect on the drill bit during the high-speed rotation of the clamper.

[0021] 4. By installing a fan-shaped through slot and an insulating baffle, after the circular baffle is released from its fixation, the rotating arc frame drives the sliding frame to slide on the inner wall of the second mounting slot, pushing the insulating baffle to move and block the fan-shaped through slot. This reduces the magnetic block's attraction and fixing effect on the drill bit, making it easier to push the circular plate assembly to move the drill bit. This avoids the problem of inconvenient drill bit disassembly caused by excessive magnetic attraction of the magnetic block on the drill bit, thus reducing the difficulty of drill bit disassembly and improving drill bit disassembly efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the front structure of the drill bit of the present invention when it is not fixed.

[0024] Figure 3 This is a schematic diagram of the front structure of the drill bit when it is fixed according to the present invention;

[0025] Figure 4 This is a front view of the sliding ring of the present invention when it is not fixed.

[0026] Figure 5 This is a front view of the sliding ring structure when it is fixed according to the present invention;

[0027] Figure 6 This is a schematic diagram of the overall structure of the circular plate assembly of the present invention;

[0028] Figure 7 This is a schematic diagram of the side structure of the circular plate assembly of the present invention;

[0029] Figure 8 This is a schematic diagram of the fan-shaped through-slot structure of the present invention.

[0030] In the diagram: 1. Clamping shell; 2. Magnet block; 3. Fixing frame; 4. Translation plate; 5. Protrusion 1; 6. Lifting plate; 7. Protruding rod; 8. Clamping arc plate; 9. Spring 1; 10. Spring 2; 11. Connecting ring frame; 12. Circular plate assembly; 13. Ring plate; 14. Sliding ring; 15. Slot; 16. Fixing rod; 17. Slot 1; 18. Spring 3; 19. Slot hole; 20. Fixing plate; 21. Protrusion 2; 22. Spring 4; 23. External threaded ring; 24. Internal threaded ring; 25. Rotating cap; 26. Inner circular plate; 27. Outer circular ring; 28. Sector-shaped through slot; 29. ​​Mounting slot 1; 30. Mounting slot 2; 31. Moving frame; 32. Insulating baffle; 33. Spring 5; 34. Sliding frame; 35. Rotating arc frame; 36. Fixing frame; 37. Spring 6. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on 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.

[0032] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," 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 this 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 this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] Please see Figure 2 and Figure 3 The present invention provides an embodiment of a high-rigidity magnetic adsorption drill bit holder, comprising a clamping shell 1, a magnet block 2, and a fixing frame 3. The clamping shell 1 is cylindrical, and the right end of the clamping shell 1 is connected to a drive shaft. The left end of the clamping shell 1 has an installation hole for mounting a drill bit. The magnet block 2 is installed on the inner wall of the right end of the clamping shell 1 for adsorbing and fixing the drill bit. The fixing frame 3 is installed on the annular inner wall of the clamping shell 1. The fixing frame 3 is located to the left of the magnet block 2, and there are two sets of fixing frames 3, which are symmetrically arranged about the axis of the clamping shell 1.

[0035] A sliding plate 4 is installed through the outer wall of the fixed frame 3. The sliding plate 4 is attached to and slidably connected to the inner wall of the fixed frame 3 near the clamping shell 1. A lifting plate 6 is slidably connected to the inner wall of the fixed frame 3. The lifting plate 6 is an arc-shaped plate and is located between the inner wall of the fixed frame 3 and the sliding plate 4. A protrusion 5 is installed on the outer wall of the sliding plate 4 facing the lifting plate 6, and the outer wall of the protrusion 5 facing the lifting plate 6 is inclined.

[0036] A protruding rod 7 is installed through the outer wall of the lifting plate 6. The end of the protruding rod 7 facing the drill bit penetrates the inner wall of the fixed frame 3 and extends to the space between the fixed frame 3 and the drill bit. The protruding rod 7 is correspondingly arranged with the protrusion 5. The end of the protruding rod 7 facing the protrusion 5 is inclined. The inclined outer walls of the protrusion 5 and the protruding rod 7 are in contact with each other and slidably connected. A clamping arc plate 8 is installed at the end of the protruding rod 7 away from the translation plate 4. The clamping arc plate 8 is located between two sets of symmetrically arranged fixed frames 3 and is used to clamp and fix the drill bit. A spring 9 and a spring 10 are fixedly installed on the inner wall of the fixed frame 3. One end of the spring 9 is connected to the left inner wall of the fixed frame 3. The wall is fixedly connected, and the other end of spring 9 is fixedly connected to the left outer wall of the lifting plate 6. One end of spring 10 is fixedly connected to the inner wall of the fixed frame 3 near the drill bit installation location, and the other end of spring 10 is fixedly connected to the inner wall of the lifting plate 6. The cross-section of the translation plate 4 is U-shaped, and a connecting ring frame 11 is fixedly installed on the right inner wall of the translation plate 4. The connecting ring frame 11 is located on the right side of the fixed frame 3. A circular plate assembly 12 is installed at the right end of the connecting ring frame 11. The connecting ring frame 11 and the circular plate assembly 12 are located between the fixed frame 3 and the magnet block 2, and the circular plate assembly 12 will not block the magnetic field generated by the magnet block 2.

[0037] Furthermore, when installing the drill bit, the tail end of the drill bit to be fixed is inserted into the clamping housing 1 through the mounting hole at the left end of the clamping housing 1, and moved to the right along the area between the two sets of symmetrically arranged fixing frames 3, so that the tail end of the drill bit is in contact with the left outer wall of the circular plate assembly 12. Then, the drill bit is pushed to the right, so that the right outer wall of the circular plate assembly 12 is in contact with the outer wall of the magnet block 2. The magnetic field generated by the magnet block 2 provides axial attraction force to the drill bit, providing initial fixation for the drill bit. At the same time, when the circular plate assembly 12 moves to the right, the circular plate assembly 12 drives the connecting ring frame 11 on its left outer wall to move to the right. The connecting ring frame 11 drives the translation plate 4 to move to the right along the inner wall of the fixing frame 3, while stretching the spring 9. The connecting plate drives the protrusion 5 on its outer wall to move to the right. Using the contact slope between the protrusion 5 and the protrusion rod 7, the protrusion rod 7 is pushed to drive the clamping arc plate 8. The drill bit moves closer to the drill bit, while the convex rod 7 moves the lifting plate 6 and squeezes the spring 10. When the magnet block 2 is attached to the outer wall of the circular plate assembly 12 and provides axial magnetic attraction to the drill bit, the clamping arc plate 8 provides radial clamping force to the drill bit from both sides. Through the axial attraction of the magnet block 2, and the conversion of the axial force by the convex block 5, the convex rod 7 and the clamping arc plate 8, the drill bit is clamped and fixed, achieving a stable fixing effect for the drill bit. This replaces the traditional screw or bolt fixing method, avoids setting mounting holes at the tail of the drill bit, which helps to improve the rigidity of the drill bit. At the same time, there is no misalignment between the mounting holes on the drill bit and the mounting holes on the chuck. There is no need to correct the insertion path of the drill bit, and there is no need to manually install screws or bolts to fix the drill bit, which improves the efficiency of drill bit clamping and installation.

[0038] When disassembling the drill bit, push the circular plate assembly 12 to move to the left. The circular plate assembly 12 drives the connecting ring frame 11 to move to the left. The connecting ring frame 11 drives the translation plate 4 to slide to the left along the inner wall of the fixed frame 3. At the same time, the translation plate 4 has a tendency to slide to the left under the pull of the spring 9. This makes it easier and more convenient for the translation plate 4 and the circular plate assembly 12 to move to the left during the drill bit disassembly process. The movement of the translation plate 4 also drives the protrusion 5 to move to the left, which gradually reduces the squeezing force of the protrusion 5 on the protrusion rod 7. Then, the spring 10 pushes the lifting plate 6 to move closer to the translation plate 4. The lifting plate 6 also drives the protrusion rod 7 and the clamping arc plate 8 to move away from the drill bit, so that the clamping arc plate 8 separates from the outer wall of the drill bit, thus facilitating the disassembly of the drill bit.

[0039] Please see Figure 1 , Figure 4 and Figure 5 One embodiment of the present invention provides a high-rigidity magnetic adsorption drill bit holder, comprising a circular plate assembly 12 with sliding rings 14 connected to both outer walls of the circular plate assembly 12, wherein the inner wall of the sliding rings 14 is slidably connected to the outer wall of the clamping shell 1, and a through-hole 19 is provided on the outer wall of the sliding rings 14, the through-hole 19 being located on the left side of the circular plate assembly 12, and a recessed hole is provided on the outer wall of the clamping shell 1, the recessed hole being located on the left side of the circular plate assembly 12.

[0040] A fixing plate 20 is fixedly installed on the inner wall of the locking hole 19. The fixing plate 20 is arranged parallel to the sliding ring 14 and the outer wall of the clamping shell 1. A second protrusion 21 is sleeved on the outer wall of the fixing plate 20, so that the fixing plate 20 passes through the outer wall of the second protrusion 21, and the outer wall of the second protrusion 21 is slidably connected to the inner wall of the locking hole 19. A fourth spring 22 is installed on the outer wall of the fixing plate 20, and the end of the fourth spring 22 away from the fixing plate 20 is fixedly connected to the inner wall of the second protrusion 21. The outer wall of the clamping shell 1... An external threaded ring 23 is embedded and installed on the left side of the ring assembly. An internal threaded ring 24 is threadedly engaged on the outer wall of the external threaded ring 23. A rotating cap 25 is fitted on the outer wall of the internal threaded ring 24 and is fixedly connected to the outer wall of the internal threaded ring 24. The end of the second protrusion 21 away from the clamping shell 1 is a conical surface. The side of the rotating cap 25 facing the circular plate assembly 12 is also a conical surface, and the conical surface of the rotating cap 25 matches the conical surface of the second protrusion 21.

[0041] Furthermore, when the drill bit and the circular plate assembly 12 move synchronously to the point where the circular plate assembly 12 is in contact with the outer wall of the magnet block 2, the circular plate assembly 12 drives the sliding ring 14 on its outer wall to slide along the outer wall of the clamping shell 1, causing the locking hole 19 on the outer wall of the sliding ring 14 to move to the position corresponding to the concave hole on the outer wall of the clamping shell 1. Then, the rotating cap 25 is twisted, and the rotating cap 25 drives the internal threaded ring 24 to rotate. The internal threaded ring 24 meshes with the external threaded ring 23, causing the external threaded ring 23 to drive the rotating cap 25 to move along the outer wall of the external threaded ring 23 toward the circular plate assembly 12. By utilizing the matching conical surface of the rotating cap 25 and the matching conical surface of the second protrusion 21, the rotating cap 25 moves toward the circular plate assembly 1. 2. When moving, push the second protrusion 21 downward along the inner wall of the clasp hole 19 so that one end of the second protrusion 21 is embedded in the concave hole of the outer wall of the clamping shell 1. The second protrusion 21 is used to fix the position of the sliding ring 14, and then fix the position of the circular plate assembly 12. This keeps the circular plate assembly 12 in contact with the magnet block 2 during the use of the drill bit, and avoids the distance between the circular plate assembly 12 and the magnet block 2 from increasing, thereby weakening the axial magnetic attraction force on the drill bit. At the same time, under the action of the connecting ring frame 11, the moving plate and the lifting plate 6, the clamping arc plate 8 is kept in a clamping and fixed state on the drill bit, which is beneficial to improving the installation and clamping stability of the drill bit during use.

[0042] When it is necessary to disassemble the drill bit, twist the rotating cap 25 in the opposite direction, so that the internal threaded ring 24 drives the rotating cap 25 to move away from the circular plate assembly 12. The second protrusion 21 gradually loses the pressure provided by the rotating cap 25, and under the push of the fourth spring 22, it pushes the second protrusion 21 to move upward, so that the second protrusion 21 moves out of the concave hole, thereby releasing the fixation of the second protrusion 21 on the circular plate assembly 12, which facilitates the subsequent movement of the circular plate assembly 12 and the removal of the drill bit.

[0043] Please see Figure 1 , Figure 4 and Figure 5 An embodiment of the present invention provides a high-rigidity magnetic adsorption drill bit holder, comprising an annular plate 13 fixedly installed on the inner wall of the right end of the clamping shell 1, and the annular plate 13 sleeved on the outside of the magnet block 2. The annular plate 13 can provide support for the magnet block 2 in order to maintain the installation stability of the magnet block 2. The inner wall of the sliding ring 14 is embedded with a slot 15, which is located on the right side of the circular plate assembly 12. The outer wall of the annular plate 13 is fixedly installed with a fixing rod 16, and the outer surface of the fixing rod 16 is sleeved with a locking block 17, which penetrates the inner wall of the clamping shell 1. The locking block 17 and the annular plate 13 are connected by a spring 3 18.

[0044] Furthermore, when the drill bit and the circular plate assembly 12 move synchronously to the point where the circular plate assembly 12 is in contact with the outer wall of the magnet block 2, the circular plate assembly 12 drives the sliding ring 14 on its outer wall to slide along the outer wall of the clamping shell 1. This causes the groove 15 on the inner wall of the sliding ring 14 to move to the position corresponding to the fixed rod 16. During the rotation of the drill bit driven by the clamping device, the centrifugal force generated when the clamping shell 1 rotates drives the first clamping block 17 to move along the outer wall of the fixed rod 16 in a direction away from the axis of the clamping shell 1, thereby causing one end of the first clamping block 17 to be embedded in the groove 15. The wall, and then during the rotation of the drill bit, the position of the circular plate assembly 12 is fixed by the cladding block 17 and the cladding slot 15, so that the clamping arc plate 8 maintains the clamping and fixing effect on the drill bit during the high-speed rotation of the clamper; when the clamping shell 1 and the drill bit stop rotating, under the pull of the spring 3 18, the cladding block 17 moves along the outer wall of the fixing rod 16 toward the axis of the clamping shell 1, so that the cladding block 17 falls off the inner wall of the cladding slot 15, thereby releasing the fixing effect of the cladding block 17 on the circular plate assembly 12, making it easier to disassemble the drill bit.

[0045] Please see Figure 3 , Figure 6 , Figure 7 and Figure 8 An embodiment of the present invention provides a high-rigidity magnetic adsorption drill bit holder, comprising a circular plate assembly 12 including an inner circular plate 26 and an outer circular ring 27. The outer circular ring 27 is located outside the inner circular plate 26, and the center of the outer circular ring 27 coincides with the center of the inner circular plate 26. The inner circular plate 26 and the outer circular ring 27 are fixedly connected by connecting blocks. The number of connecting blocks is four, and the four sets of connecting blocks are evenly distributed outside the inner circular plate 26. The inner circular plate 26 is located inside the clamping shell 1, and the outer circular ring 27 is located outside the clamping shell 1. The connecting blocks penetrate the inner wall of the clamping shell 1, and the connecting blocks are slidably connected to the penetration points of the clamping shell 1. Sliding rings 14 are installed on both sides of the outer circular ring 27. The inner wall of the sliding ring 14 is attached to and slidably connected to the outer wall of the clamping shell 1, and the outer diameter of the sliding ring 14 is smaller than the outer diameter of the outer circular ring 27.

[0046] A fan-shaped through slot 28 is formed through the outer wall of the inner circular plate 26, and the fan-shaped through slot 28 is located on the left side of the magnet block 2. There are four sets of fan-shaped through slots 28, which are evenly distributed around the center of the inner circular plate 26. A hollow mounting groove 29 is provided inside the inner circular plate 26, and the mounting groove 29 is connected to the fan-shaped through slot 28. A hollow mounting groove 30 is provided inside the outer circular ring 27. A connecting groove is provided through the connecting block, and the two ends of the connecting groove are respectively connected to the mounting groove 29 and the mounting groove 30, so that the mounting groove 29 and the mounting groove 30 are in a connected state.

[0047] An insulating baffle 32 and a movable frame 31 are slidably installed on the inner wall of mounting slot 29. The end of the movable frame 31 facing the center of the inner circular plate 26 is fixedly connected to the insulating baffle 32. The outer walls of both sides of the insulating baffle 32 and the movable frame 31 are attached to and slidably connected to the planar inner walls of mounting slot 29. The area of ​​the insulating baffle 32 is larger than the through hole area of ​​the fan-shaped through slot 28. The insulating baffle 32 is used to shield the fan-shaped through slot 28, thereby blocking the magnetic field of the magnet block 2. A spring 5 33 is fixedly installed on the inner wall of mounting slot 20. One end of the spring 5 33 is fixedly connected to the outer wall of the movable frame 31. The extension direction of the spring 5 33 is along the connecting groove inside the connecting block and points to the center of the inner circular plate 26. A rotating arc frame 35 is installed through the outer wall of the outer ring 27. The rotating arc frame 35 includes a central arc rod and straight rods at both ends of the arc rod. The inner wall of one end of the straight rod in the rotating arc frame 35 is connected to the inner wall of the connecting rod. A sliding frame 34 is attached, and the sliding frame 34 is in close contact with and slidably connected to the inner wall of the mounting groove 2 30. The interior of the arc-shaped rod part in the rotating arc frame 35 is slidably connected to the outer wall of the outer ring 27. A fixing frame 36 is fixedly installed on the outer wall of the outer ring 27. There are two sets of fixing frames 36, and the two sets of fixing frames 36 are symmetrically arranged on the outer wall of the arc plate. The fixing frame 36 includes a fixing block fixedly connected to the outer wall of the outer ring 27. The fixing frame 36 also includes an arc strip fixedly connected to both sides of the fixing block. The arc strip is coaxially arranged with the circular plate assembly 12 and the arc-shaped rod part in the rotating arc frame 35. The arc strip passes through the outer wall of the straight rod at the other end of the rotating arc frame 35. A spring 6 37 is installed on the outer wall of the fixing block in the fixing frame 36. The spring 6 37 is sleeved on the outside of the arc strip in the fixing frame 36, and the end of the spring 6 37 away from the fixing block is connected to the outer wall of the rotating arc frame 35.

[0048] Furthermore, when it is necessary to disassemble or replace the drill bit, first release the fixation of the circular plate assembly 12, then pinch the two sets of rotating arc frames 35 symmetrically arranged on both sides of the fixed frame 36, so that the rotating arc frames 35 slide along the outer wall of the circular ring plate towards the fixed frame 36. The rotating arc frames 35 compress the spring 6 37, and at the same time, the rotating arc frames 35 drive the sliding frame 34 installed on its own inner wall to slide synchronously along the inner wall of the second mounting groove 30. The sliding frame 34 rotates, which increases the air pressure in the second mounting groove 30 part between the sliding frame 34 and the solid area inside the outer ring 27, thereby pushing the moving frame 31 along the inner wall of the connecting groove and the first mounting groove 29 towards the fixed frame 36. The moving frame 31 moves towards the center of the circular plate assembly 12, causing the insulating baffle 32 to slide along the inner wall of the mounting groove 2 30 toward the center of the circular plate assembly 12. This allows the insulating baffle 32 to pass through the fan-shaped through groove 28 and block it. The magnetic shielding performance of the insulating baffle 32 blocks or weakens the magnetic field generated by the magnet block 2, thereby reducing the attraction of the magnet block 2 to the drill bit. Then, the circular plate assembly 12 is pushed to move the drill bit to the left, separating the drill bit from the magnet block. This avoids the problem of inconvenient drill bit disassembly caused by excessive magnetic attraction of the magnet block to the drill bit, which helps to reduce the difficulty of drill bit disassembly and improve the efficiency of drill bit disassembly.

[0049] Furthermore, after the drill bit is removed, the rotating arc frame 35 is released, and the spring six 37 loses its compression, thus pushing the rotating arc frame 35 to move away from the fixed frame 36, causing the rotating arc frame 35 to reset. The rotating arc frame 35 drives the sliding frame 34 to slide along the inner wall of the mounting groove two 30, causing the sliding frame 34 to reset. The air pressure in the mounting groove two 30 between the sliding frame 34 and the solid area inside the outer ring 27 decreases, and under the pull of the spring five 33, it drives the moving frame 31 and the insulating baffle 32 to move away from the center of the circular plate assembly 12, exposing the fan-shaped through groove 28, restoring the magnetic field generated by the magnet block 2, making it easier to use the magnetic field to attract and fix the drill bit again. During the use of the drill bit, under the action of centrifugal force, the insulating baffle 32 tends to move away from the fan-shaped through groove 28, thereby avoiding the insulating baffle 32 from blocking the fan-shaped through groove 28 during the use of the drill bit, which is conducive to maintaining the attraction and fixation effect of the magnet block 2 on the drill bit.

[0050] Working principle: When the drill bit needs to be installed inside the chuck, the tail of the drill bit is inserted into the chuck housing 1, pushing the drill bit to the right until the circular assembly is in contact with the outer wall of the magnet block 2. The magnet block 2 provides axial magnetic attraction for the drill bit and provides initial fixation. At the same time, the circular plate assembly 12 drives the connecting ring frame 11, the translation plate 4, and the first protrusion 5 to move, pushing the lifting plate 6, the second protrusion 7, and the clamping arc plate 8 to move. While the magnet block 2 provides axial magnetic attraction, the clamping arc plate 8 provides radial clamping force for the drill bit, ensuring a stable installation. Then, the rotating cap 25 pushes the second protrusion 21 into the outer wall of the chuck housing 1, fixing the circular plate assembly 12 in a static state. When the drill bit is in use, the centrifugal force generated by the rotation of the clamping shell 1 drives the chuck block 17 to embed into the inner wall of the sliding ring 14, thereby doubly fixing the position of the circular plate assembly 12 when the drill bit is in use, to ensure the stability of the clamping and fixing of the drill bit during use. When it is necessary to disassemble the drill bit, first release the position fixing of the circular plate assembly 12, and then drive the rotating arc frame 35 to slide, thereby driving the insulating baffle 32 to move. The insulating baffle 32 blocks the fan-shaped through slot 28 and blocks or shields the magnetic field generated by the magnet block 2, so that the radial magnetic attraction force of the magnet block 2 on the drill bit is reduced, making it easier to push the circular plate assembly 12 to move the drill bit to the left, thereby facilitating the disassembly of the drill bit.

[0051] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A high-rigidity magnetic adsorption drill bit holder, characterized in that: It includes a clamping shell (1), a magnet block (2) and a fixing frame (3). The magnet block (2) is installed on the inner wall of the right end of the clamping shell (1). The magnet block (2) is used to attract and fix the drill bit. The fixing frame (3) is installed on the annular inner wall of the clamping shell (1). A sliding plate (4) is installed through the outer wall of the fixed frame (3), and a lifting plate (6) is slidably connected to the inner wall of the fixed frame (3). A protrusion (5) is installed on the outer wall of the sliding plate (4) facing the lifting plate (6). A protruding rod (7) is installed through the outer wall of the lifting plate (6), and the protruding rod (7) is correspondingly arranged with the protruding block (5). A clamping arc plate (8) is installed at the end of the protruding rod (7) away from the sliding plate (4). The inner wall of the fixed frame (3) Spring 1 (9) and Spring 2 (10) are fixedly installed, and the right end of Spring 1 (9) is fixedly connected to the left outer wall of the lifting plate (6), and one end of Spring 2 (10) is connected to the inner wall of the lifting plate (6). A connecting ring frame (11) is fixedly installed on the inner wall of the translation plate (4), and a circular plate assembly (12) is installed on the right end of the connecting ring frame (11). The connecting ring frame (11) and the circular plate assembly (12) are located between the fixed frame (3) and the magnet block (2).

2. The high-rigidity magnetic adsorption drill bit holder according to claim 1, characterized in that: An annular plate (13) is fixedly installed on the inner wall of the right end of the clamping shell (1), and the annular plate (13) is sleeved on the outside of the magnet block (2).

3. The high-rigidity magnetic adsorption drill bit holder according to claim 2, characterized in that: The outer walls of both sides of the circular plate assembly (12) are connected to sliding rings (14), and the inner wall of the sliding ring (14) is slidably connected to the outer wall of the clamping shell (1). The outer wall of the sliding ring (14) is provided with a through hole (19), and the through hole (19) is located on the left side of the circular plate assembly (12). A fixing plate (20) is fixedly installed on the inner wall of the through hole (19). A second protrusion (21) is sleeved on the outer wall of the fixing plate (20), and the outer wall of the second protrusion (21) is slidably connected to the inner wall of the through hole (19). A fourth spring (22) is installed on the outer wall of the fixing plate (20), and the end of the fourth spring (22) away from the fixing plate (20) is fixedly connected to the inner wall of the second protrusion (21). An external threaded ring (23) is embedded in the outer wall of the clamping shell (1), and an internal threaded ring (24) is threadedly connected to the outer wall of the external threaded ring (23). A rotating cap (25) is fixedly installed on the outer wall of the internal threaded ring (24).

4. A high-rigidity magnetic adsorption drill bit holder according to claim 3, characterized in that: The end of the second protrusion (21) away from the clamping shell (1) is a conical surface, and the side of the rotating cap (25) facing the circular plate assembly (12) is a conical surface. The rotating cap (25) is slidably connected to the second protrusion (21).

5. A high-rigidity magnetic adsorption drill bit holder according to claim 3, characterized in that: The inner wall of the sliding ring (14) is embedded with a slot (15), which is located on the right side of the circular plate assembly (12). A fixing rod (16) is fixedly installed on the outer wall of the annular plate (13). A locking block (17) is sleeved on the outer surface of the fixing rod (16), and the locking block (17) is connected to the annular plate (13) by a spring (18).

6. A high-rigidity magnetic adsorption drill bit holder according to claim 5, characterized in that: The circular plate assembly (12) includes an inner circular plate (26) and an outer circular ring (27). The outer circular ring (27) is located outside the inner circular plate (26), and the inner circular plate (26) and the outer circular ring (27) are fixedly connected by a connecting block.

7. A high-rigidity magnetic adsorption drill bit holder according to claim 6, characterized in that: The inner circular plate (26) is located inside the clamping shell (1), the outer circular ring (27) is located outside the clamping shell (1), and the sliding ring (14) is installed on both sides of the outer circular ring (27).

8. A high-rigidity magnetic adsorption drill bit holder according to claim 7, characterized in that: The inner circular plate (26) has a through-hole fan-shaped groove (28) on its outer wall, and the through-hole fan-shaped groove (28) is located on the left side of the magnet block (2). The inner circular plate (26) has a hollow mounting groove 1 (29) inside, and the outer circular ring (27) has a hollow mounting groove 2 (30) inside. The connecting block has a through-hole connecting groove inside, and the two ends of the connecting groove are respectively connected to the mounting groove 1 (29) and the mounting groove 2 (30).

9. A high-rigidity magnetic adsorption drill bit holder according to claim 8, characterized in that: An insulating baffle (32) and a movable frame (31) are slidably installed on the inner wall of the first mounting groove (29). The end of the movable frame (31) facing the center of the inner circular plate (26) is fixedly connected to the insulating baffle (32). A spring five (33) is fixedly installed on the inner wall of the second mounting groove (30). One end of the spring five (33) is fixedly connected to the outer wall of the movable frame (31). A rotating arc frame (35) is installed through the outer wall of the outer ring (27). A sliding frame (34) is connected to the inner wall of the rotating arc frame (35). The sliding frame (34) is slidably connected to the inner wall of the second mounting groove (30). A fixed frame (36) is fixedly installed on the outer wall of the outer ring (27). A spring six (37) is installed on the outer wall of the fixed frame (36). The fixed frame (36) penetrates the outer wall of the rotating arc frame (35).

10. A high-rigidity magnetic adsorption drill bit holder according to claim 9, characterized in that: The insulating baffle (32) is used to block the fan-shaped through slot (28).

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