A disc tool magazine with a stable stop bracket

Abstract

The present invention belongs to the technical field of numerical control tools, and in particular to a disc tool magazine with a stable stop bracket. Aiming at the problem that the disc tool magazine in the prior art requires complicated operations to be replaced after the target drill bit rotates to the workstation, the following scheme is proposed, including a fixed base with an overall L-shaped structure, an anti-slip bearing group is embedded in the vertical plate of the fixed base, a rotating tool holder is rotatably connected in the anti-slip bearing group, a U-shaped cantilever rod extending into the interior of the rotating tool holder is fixed at one end of the fixed base away from the mounting circular hole, and the U-shaped cantilever rod includes two mutually symmetrical semi-cylindrical plates; a plurality of centripetal sliding holes in a centrally symmetrical manner are opened on the circumferential outer wall of one end of the rotating tool holder close to the front. The present invention can accurately and timely stop the rotating tool holder carrying the drilling tool mechanism at any desired angle position, and the inertia of the rotating tool holder will not reversely push the worm to continue rotating when the servo motor stops.

Description

Technical Field

[0001] The invention relates to the technical field of numerical control tools, and in particular to a disc tool magazine with a stable stop bracket. Background Art

[0002] The tool magazine system is a device that stores and changes tools during the automated machining process of a CNC machining center. Its automatic tool changing mechanism and tool magazine that can store multiple tools can complete various machining needs, such as drilling, boring, tapping, etc., through the control of a computer program, greatly shortening the machining time and reducing production costs.

[0003] After searching, it is found that after the cutter disc in the prior art turns the required drill bit to the working position, the method of stopping and adjusting the working direction is relatively complicated, and the meshing transmission method between the threads is slow, making it difficult to quickly adjust the disc tool magazine, wasting time and being inefficient; at the same time, the existing disc tool magazine fixing frame, the support frame and the base of the fixed tool magazine are screwed together by external bolts, and in order to ensure the stability of the fixation, a large number of bolts are used. Therefore, when repairing and disassembling the disc tool magazine, it will take a lot of time to tighten the bolts. Therefore, we propose a disc tool magazine with a stable, fast and precise stopping bracket. Summary of the invention

[0004] In view of the technical problem that the disc tool magazine in the prior art requires complicated operations to be replaced after the target drill bit rotates to the workstation, the present invention adopts the following technical solution:

[0005] A disc tool magazine with a stable stopping bracket comprises a fixed base with an overall L-shaped structure, an anti-slip bearing group is embedded in the vertical plate of the fixed base, a rotating tool seat is rotatably connected in the anti-slip bearing group, a U-shaped cantilever rod extending to the inside of the rotating tool seat is fixed at the end of the fixed base away from the mounting circular hole, the U-shaped cantilever rod comprises two mutually symmetrical semi-cylindrical plates; a plurality of centripetal sliding holes symmetrically arranged on the circumferential outer wall of the end of the rotating tool seat close to the front side, and a drilling tool mechanism is arranged in each of the centripetal sliding holes; the drilling tool mechanism comprises a transmission rotating rod slidably connected to the centripetal sliding hole; a driving mechanism is arranged at one end close to the drilling tool mechanism between the two semi-cylindrical plates; the rotating tool seat A worm gear tooth is reserved on the circumferential outer wall at one end of the rotary cutter seat near the rear side, and a servo motor is fixed to the vertical plate of the fixed base near the top of the rear side, and a worm meshing with the worm gear tooth is fixed to the top of the output shaft of the servo motor; an installation slot is opened on the circumferential inner wall of the rotary cutter seat at one end near the worm gear tooth, and a bow-shaped pressure rod is hinged in the installation slot, a clamping spring is fixed between the surface of the bow-shaped pressure rod and the bottom of the installation slot, a guide ring adapted to the position of the bow-shaped pressure rod is fixed to the circumferential outer wall of the U-shaped cantilever rod, and signal pressure sensors distributed equidistantly are embedded on the guide ring; the number of signal pressure sensors is the same as the number of drilling tool mechanisms.

[0006] Preferably, the driving mechanism includes a fixed seat fixed on the surface of one of the semi-cylindrical plates of the U-shaped cantilever rod. An electric telescopic rod extending vertically downward is fixed in the middle of the fixed seat, and a four-claw U-shaped clamping rod is fixed at the end of the extending rod of the electric telescopic rod. A vertical sliding rotating rod is rotatably connected in the middle of the four-claw U-shaped clamping rod. Anti-slip teeth that engage with each other are respectively formed at the bottom end of the sliding rotating rod and the end of the transmission rotating rod close to each other, and a docking magnet two and a docking magnet one that attract each other are respectively embedded at the bottom end of the sliding rotating rod and the end of the transmission rotating rod close to each other; a bearing seat is fixed between the two semi-cylindrical plates of the U-shaped cantilever rod close to the top end of the sliding rotating rod, and a centripetal bearing is embedded in the middle of the bearing seat. A hexagonal prism driving rotating rod is rotatably connected in the middle of the centripetal bearing; a hexagonal socket adapted to the hexagonal prism driving rotating rod is formed at the top end of the sliding rotating rod; and a driven bevel gear one is fixed on the circumferential outer wall of the hexagonal prism driving rotating rod close to the top end; a motor support plate is fixed between the two semi-cylindrical plates above the electric telescopic rod, and a driving main motor is fixed to the top end of the motor support plate by bolts. A transmission rod is fixed to the top end of the output shaft of the driving main motor through a coupling, and a driving gear that meshes with the driven bevel gear one is fixed at the end of the transmission rod; an annular retaining ring is fixed on the circumferential outer wall of the sliding rotating rod between the four-claw U-shaped clamping rods, and thrust ball bearings are fixed on both the upper and lower sides of the annular retaining ring, and one side of the two thrust ball bearings away from the annular retaining ring is fixed between the struts of the four-claw U-shaped clamping rod.

[0007] Preferably, the upper half of the sliding rotating rod has a larger diameter than the lower half, and the depth of the hexagonal socket is equal to half of the length of the sliding rotating rod; it can ensure that the hexagonal prism driving rotating rod drives with a larger diameter, improving the overall torque.

[0008] Preferably, a magnet ring is fixed at one end of the sliding bearing away from the rotary tool holder, and two centrosymmetric permanent magnets one are fixed on the circumferential outer wall of the transmission rotating rod away from the anti-slip teeth. The side of the permanent magnet one close to the magnet ring attracts the magnet ring; an installation socket is formed at the end of the transmission rotating rod away from the anti-slip teeth, and a combined drill bit is fixed in the installation socket; the distances from the tips of the combined drill bits at different workstations to the center position are all the same.

[0009] Preferably, a wear-resistant sliding ring is embedded in the circumferential inner wall of the centripetal sliding hole, and an annular oil collecting groove is formed in the circumferential inner wall of the wear-resistant sliding ring; the outer wall of the transmission rotating rod forms a sliding fit with the inner wall of the wear-resistant sliding ring; it can improve the rotational stability during use and ensure that the friction force on the outer wall of the transmission rotating rod becomes smaller.

[0010] Preferably, two centrally symmetrical rectangular slots are formed at the ends of the two semi-cylindrical plates close to the front sides, and a centrally symmetrical clamping mechanism is clamped in the two rectangular slots, the clamping mechanism comprises a powerful electromagnet embedded in the rectangular slot, a brake block is slidably sleeved on the magnetic pole head end of the powerful electromagnet, and a countersunk hole is formed at the end of the brake block close to the powerful electromagnet, and a strong magnetic block that repels the powerful electromagnet after power is supplied is fixed to the bottom of the countersunk hole; the control switch of the powerful electromagnet is connected to the controller via a signal line, and the signal pressure sensor is connected to the controller via a signal line.

[0011] Preferably, a guide rod is fixed to the side of the brake block close to the U-shaped cantilever rod, and a guide hole compatible with the guide rod is opened on the outer wall of the U-shaped cantilever rod; this can prevent the brake block from rotating when it is pushed in, ensuring that it contacts the circumferential inner wall of the rotating knife seat in the best posture.

[0012] Preferably, a plug hole is formed at one end of the bottom of the arc-shaped groove of the fixed base away from the rotating knife seat, and the plug hole is used to fix the U-shaped cantilever rod.

[0013] Preferably, an L-shaped clamping frame is fixed on the rear side of the vertical plate of the fixed base near the top, and a clamping ring compatible with the worm is fixed at the bottom end of the L-shaped clamping frame; it has an axial anti-deflection effect on the worm and improves its durable ability of reverse self-locking on the rotating tool holder.

[0014] Preferably, a marking position is provided on the end of the circumferential outer wall of the transmission rotating rod away from the center; and a plurality of corresponding numbers of pressure rods symmetrically distributed in the center are provided on the end of the U-shaped cantilever rod away from the anti-slip bearing group, and the number of corresponding numbers of the pressure rods corresponds to the number of workstations; a signal light corresponding to the corresponding signal pressure sensor is provided inside the corresponding number of the pressure rod, so that it is convenient to observe whether the required drilling tool mechanism is accurately in place.

[0015] The beneficial effects of the present invention are:

[0016] 1. The worm and worm wheel teeth are driven to avoid the angle interval that may occur in traditional gear transmission, which then causes inaccurate docking. The device, in conjunction with the corresponding signal pressure sensor, can stop the rotating tool holder carrying the drilling tool mechanism accurately and timely at any required angle position, and the inertia of the rotating tool holder will not push the worm to continue rotating in the reverse direction when the servo motor stops.

[0017] 2. By setting the permanent magnet block 1 and the magnet ring, the transmission rod can be tightly fixed on the end of the sliding bearing when the tool is retracted, ensuring that each transmission rod protrudes inward by the same distance, ensuring that it can be quickly and accurately docked when the tool is changed next time.

[0018] 3. By setting up a strong magnetic block and a strong electromagnet, the moment the signal pressure sensor is pressurized, the strong electromagnet can be immediately controlled to be energized to push the brake block to stop the rotating tool holder, thereby playing an auxiliary role in its fixation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the rear three-dimensional structure of the present invention;

[0021] Figure 3 A top view of the present invention;

[0022] Figure 4 It is a front view of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the present invention when it is working;

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the fixed base in the present invention;

[0025] Figure 7 For the present invention Figure 3 Schematic diagram of the cross-sectional structure along line AA;

[0026] Figure 8 It is a schematic cross-sectional view of the U-shaped cantilever rod of the present invention;

[0027] Figure 9 It is a schematic diagram of the three-dimensional structure of the rotating tool holder in the present invention.

[0028] In the figure: 1, fixed base; 101, mounting hole; 102, plug hole; 2, anti-slip bearing group; 3, servo motor; 4, driven bevel gear 1; 5, bearing holder; 6, rotating knife seat; 601, worm gear teeth; 602, mounting notch; 603, centripetal sliding hole; 7, U-shaped cantilever rod; 701, guide ring; 702, motor support plate; 8, strong electromagnet; 9, brake block; 10, four-claw U-shaped clamp rod; 11, sliding rod; 1101, annular retaining ring; 12, sliding Bearing; 13. Magnetic ring; 14. Transmission rod; 15. Combined drill bit; 16. Permanent magnet block 1; 17. Signal pressure sensor; 18. Corresponding number of pressure rod; 19. Clamping spring; 20. Worm; 21. L-shaped clamping frame; 22. Docking magnet 1; 23. Guide rod; 24. Thrust ball bearing; 25. Bow-shaped pressure rod; 26. Hexagonal prism drive rod; 27. Docking magnet 2; 28. Driving main motor; 29. ​​Electric telescopic rod; 30. Fixed seat; 31. Driving gear. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] In this embodiment, refer to Figure 1-9 A disc tool magazine with a stable stop bracket includes a fixed base 1 with an overall L-shaped structure, a mounting circular hole 101 is opened on the vertical plate of the fixed base 1, and an anti-channeling bearing group 2 is embedded in the mounting circular hole 101, and a rotating tool seat 6 with an axis line extending horizontally and an overall tubular structure is rotatably connected in the anti-channeling bearing group 2, an arc groove is reserved on the flat plate at one end of the fixed base 1 away from the mounting circular hole 101, and a U-shaped cantilever rod 7 extending into the interior of the rotating tool seat 6 is fixed at the bottom of the arc groove, and the U-shaped cantilever rod 7 includes two mutually symmetrical semi-circular grooves. The axis of the two semi-cylindrical plates coincides with the axis of the rotating tool holder 6; a plurality of centrifugal sliding holes 603 are opened on the outer wall of the circumference of the end of the rotating tool holder 6 close to the front, and a drilling tool mechanism is arranged in each of the centrifugal sliding holes 603; the drilling tool mechanism includes a transmission rotating rod 14 slidably connected to the centrifugal sliding hole 603; a driving mechanism is arranged at one end of the drilling tool mechanism between the two semi-cylindrical plates; a worm gear tooth 601 is reserved on the outer wall of the circumference of the end of the rotating tool holder 6 close to the rear side, and a vertical plate of the fixed base 1 is fixed near the top of the rear side. A servo motor 3 is fixed, and a worm 20 meshing with the worm gear teeth 601 is fixed on the top of the output shaft of the servo motor 3; a mounting notch 602 is opened at one end of the circumferential inner wall of the rotating knife seat 6 close to the worm gear teeth 601, and a bow-shaped pressure rod 25 is hinged in the mounting notch 602, and a tightening spring 19 is fixed between the surface of the bow-shaped pressure rod 25 and the bottom of the mounting notch 602, and a guide ring 701 adapted to the position of the bow-shaped pressure rod 25 is fixed on the circumferential outer wall of the U-shaped cantilever rod 7, and equidistantly spaced springs are embedded on the guide ring 701. The signal pressure sensor 17 of the cloth; the number of the signal pressure sensors 17 is the same as the number of the drilling tool mechanisms; driven by the set worm 20 and the worm wheel teeth 601, the angle interval that may occur in the traditional gear transmission is avoided, and then the precise docking is caused. The device cooperates with the corresponding signal pressure sensor 17 to stop the rotating tool holder 6 carrying the drilling tool mechanism accurately and timely at any required angle position, and when the servo motor 3 stops, the inertia of the rotating tool holder 6 will not push the worm 20 to continue rotating in the reverse direction.

[0031] Please refer to Figure 5 , Figures 7-8, the driving mechanism includes a fixed seat 30 fixed on the surface of one of the semi-cylindrical plates of the U-shaped cantilever rod 7. An electric telescopic rod 29 extending vertically downward is fixed in the middle of the fixed seat 30, and a four-claw U-shaped clamping rod 10 is fixed at the end of the extending rod of the electric telescopic rod 29. A vertical sliding rotating rod 11 is rotatably connected in the middle of the four-claw U-shaped clamping rod 10. Anti-slip teeth that engage with each other are respectively formed at the bottom end of the sliding rotating rod 11 and the end of the transmission rotating rod 14 close to each other. A docking magnet two 27 and a docking magnet one 22 that attract each other are respectively embedded at the bottom end of the sliding rotating rod 11 and the end of the transmission rotating rod 14 close to each other, so that the opposite ends of the sliding rotating rod 11 and the transmission rotating rod 14 can be adsorbed and docked quickly when about to dock; a bearing seat 5 is fixed between the two semi-cylindrical plates of the U-shaped cantilever rod 7 close to the top of the sliding rotating rod 11, and a centripetal bearing is embedded in the middle of the bearing seat 5. A hexagonal prism driving rotating rod 26 is rotatably connected in the middle of the centripetal bearing; a hexagonal socket adapted to the hexagonal prism driving rotating rod 26 is formed at the top end of the sliding rotating rod 11; and a driven bevel gear one 4 is fixed on the circumferential outer wall of the hexagonal prism driving rotating rod 26 close to the top end; a motor support plate 702 is fixed between the two semi-cylindrical plates above the electric telescopic rod 29, and a driving main motor 28 is fixed at the top end of the motor support plate 702 by bolts. A transmission rod is fixed at the top end of the output shaft of the driving main motor 28 through a coupling, and a driving gear 31 that meshes with the driven bevel gear one 4 is fixed at the end of the transmission rod; an annular retaining ring 1101 is fixed on the circumferential outer wall of the sliding rotating rod 11 between the four-claw U-shaped clamping rods 10, and thrust ball bearings 24 are fixed on both the upper and lower sides of the annular retaining ring 1101, and one side of the two thrust ball bearings 24 away from the annular retaining ring 1101 is fixed between the support rods of the four-claw U-shaped clamping rod 10; that is, the four-claw U-shaped clamping rod 10 can move up and down while clamping the annular retaining ring 1101, and the sliding rotating rod 11 can rotate normally around its axis.

[0032] Refer to Figure 5 and Figure 7 , the upper half diameter of the sliding rotating rod 11 is larger than the lower half diameter, and the depth of the hexagonal socket is equal to half of the length of the sliding rotating rod 11; it can ensure that the hexagonal prism driving rotating rod 26 drives with a larger diameter, improving the overall torque.

[0033] Refer to Figure 1 、 Figure 5 and Figure 7, on the outer surface of the rotary tool holder 6 near the centripetal sliding hole 603, sliding bearings 12 are respectively fixed and are centrosymmetrically distributed with each other. The inner diameter of the sliding bearing 12 is the same as that of the centripetal sliding hole 603 and they are coaxial. At one end of the sliding bearing 12 away from the rotary tool holder 6, a magnet ring 13 is fixed. At one end of the circumferential outer wall of the transmission rotating rod 14 away from the anti-detachment teeth, two centrosymmetric permanent magnet blocks one 16 are fixed. One side of the permanent magnet block one 16 close to the magnet ring 13 is attracted to the magnet ring 13. An installation jack is opened at one end of the transmission rotating rod 14 away from the anti-detachment teeth, and a combined drill bit 15 is fixed in the installation jack. The distances from the tips of the combined drill bits 15 at different workstations to the central position are all the same. By setting the permanent magnet block one 16 and the magnet ring 13, not only can the transmission rotating rod 14 be tightly fixed at the end of the sliding bearing 12 when retracting the tool, ensuring that the protruding distance of each transmission rotating rod 14 inward is the same, but also ensuring that it can be quickly and accurately docked during the next tool change.

[0034] In the present invention, a wear-resistant sliding ring is embedded in the circumferential inner wall of the centripetal sliding hole 603, and an annular oil collecting groove is opened in the circumferential inner wall of the wear-resistant sliding ring. The outer wall of the transmission rotating rod 14 forms a sliding fit with the inner wall of the wear-resistant sliding ring. It can improve the rotational stability during use and ensure that the frictional force on the outer wall of the transmission rotating rod 14 becomes smaller.

[0035] Refer to Figure 1 and Figure 4 , at one end of the two semi-cylindrical plates close to the front, two centrosymmetric rectangular clamping grooves are opened, and a centrosymmetric clamping mechanism is clamped in the two rectangular clamping grooves. The clamping mechanism includes a powerful electromagnet 8 embedded in the rectangular clamping groove. The magnetic pole head end of the powerful electromagnet 8 is slidably sleeved with a brake block 9. A counterbore is opened at one end of the brake block 9 close to the powerful electromagnet 8, and a strong magnetic block that repels the powerful electromagnet 8 after being energized is fixed at the bottom of the counterbore. The control switch of the powerful electromagnet 8 is connected to a controller through a signal wire, and the signal pressure sensor 17 is connected to the controller through a signal wire. By setting the strong magnetic block and the powerful electromagnet 8, it can immediately control the powerful electromagnet 8 to be energized the moment the signal pressure sensor 17 is pressed, and then push the brake block 9 to stop the rotary tool holder 6, playing an auxiliary role in fixing it.

[0036] Refer to Figure 1 and Figure 4 , a guide rod 23 is fixed on one side of the brake block 9 close to the U-shaped cantilever rod 7, and a guide hole adapted to the guide rod 23 is opened on the outer wall of the U-shaped cantilever rod 7. It can prevent the brake block 9 from rotating when approaching, and ensure that it contacts the circumferential inner wall of the rotary tool holder 6 in the best posture.

[0037] Refer to Figure 2 and Figure 6, at one end of the arc-shaped groove bottom of the fixed base 1 away from the rotary tool holder 6, a plug hole 102 is opened, and the plug hole 102 is used to fix the U-shaped cantilever rod 7.

[0038] Refer to Figures 2-3 , at the rear side of the vertical plate of the fixed base 1 near the top, an L-shaped pressing frame 21 is fixed, and a clamping ring adapted to the worm 20 is fixed at the bottom end of the L-shaped pressing frame 21; it plays an axial anti-deviation role for the worm 20 and improves its lasting ability of reverse self-locking for the rotary tool holder 6.

[0039] Refer to Figure 2 , at one end of the circumferential outer wall of the transmission rotating rod 14 away from the center, a marked position is opened; and at one end of the U-shaped cantilever rod 7 away from the anti-displacement bearing group 2, a plurality of pressure rods corresponding to labels 18 are arranged in central symmetry, and the number of the pressure rods corresponding to labels 18 corresponds to the number of working positions; inside the pressure rod corresponding to label 18, a signal lamp corresponding to the corresponding signal pressure sensor 17 is arranged; it is convenient to observe whether the required drilling tool mechanism is in place accurately.

[0040] Before replacing the drilling tool mechanism of this device, the transmission rotating rods 14 at each working position are all in the initial position, that is, the end with the combined drill bit 15 is tightly adsorbed at the end of the magnet ring 13; when the combined drill bit 15 at which working position is needed, start the servo motor 3, and drive by the worm 20, the rotary tool holder 6 drives the drilling tool mechanism to slowly rotate. At this time, the bow-shaped pressing rod 25 will slowly cross the signal pressure sensor 17 on the guiding ring 701. If it is not the required drilling tool mechanism, control the power-off of the strong electromagnet 8 until the lamp of the required drilling tool mechanism lights up, indicating that it is in place; at this time, control the extension rod of the electric telescopic rod 29 to extend, and quickly dock the sliding rotating rod 11 and the corresponding transmission rotating rod 14 with the four-claw U-shaped clamping rod 10; then start the driving main motor 28 in the U-shaped cantilever rod 7, and cooperate with the advancement of the electric telescopic rod 29 to perform drilling or boring operations.

[0041] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent replacements or changes, and should all be covered within the protection scope of the present invention.

Claims

1. A disc tool magazine with a stable stop bracket, comprising a fixed base (1) with an overall L-shaped structure, an anti-slip bearing group (2) embedded in the vertical plate of the fixed base (1), a rotating tool holder (6) rotatably connected to the anti-slip bearing group (2), characterized in that: A U-shaped cantilever rod (7) extending into the interior of the rotating tool holder (6) is fixed to one end of the fixed base (1) away from the mounting circular hole (101), and the U-shaped cantilever rod (7) includes two mutually symmetrical semi-cylindrical plates; a plurality of centrifugal sliding holes (603) are opened on the circumferential outer wall of the rotating tool holder (6) near the front end, and a drilling tool mechanism is arranged in each of the centrifugal sliding holes (603); the drilling tool mechanism includes a transmission rotating rod (14) slidably connected to the centrifugal sliding hole (603); a driving mechanism is arranged at one end near the drilling tool mechanism between the two semi-cylindrical plates; a worm gear tooth (601) is reserved on the circumferential outer wall of the rotating tool holder (6) near the rear side, and a servo motor (3) is fixed to the top end of the vertical plate near the rear side of the fixed base (1). ), a worm (20) meshing with the worm gear teeth (601) is fixed to the top of the output shaft of the servo motor (3); a mounting notch (602) is formed on one end of the circumferential inner wall of the rotary tool holder (6) close to the worm gear teeth (601), and a bow-shaped pressure rod (25) is hinged in the mounting notch (602), a clamping spring (19) is fixed between the surface of the bow-shaped pressure rod (25) and the bottom of the mounting notch (602), a guide ring (701) matched with the position of the bow-shaped pressure rod (25) is fixed to the circumferential outer wall of the U-shaped cantilever rod (7), and signal pressure sensors (17) distributed at equal distances are embedded on the guide ring (701); the number of the signal pressure sensors (17) is the same as the number of the drilling tool mechanisms; Sliding bearings (12) are fixed to the outer surface of the rotating blade seat (6) near the centripetal sliding hole (603), which are symmetrically distributed with respect to the center. The inner diameter of the sliding bearing (12) is the same as that of the centripetal sliding hole (603) and is coaxial. A magnet ring (13) is fixed to the end of the sliding bearing (12) away from the rotating blade seat (6), and two permanent magnet blocks (16) are fixed to the end of the circumferential outer wall of the transmission rotating rod (14) away from the anti-stripping teeth. The side of the permanent magnet block (16) close to the magnet ring (13) is attracted to the magnet ring (13). An installation socket is formed at the end of the transmission rotating rod (14) away from the anti-stripping teeth, and a combined drill bit (15) is fixed in the installation socket. The distances from the tip of the combined drill bit (15) at different workstations to the center position are all the same.

2. A disc tool magazine with a stable stop bracket according to claim 1, characterized in that: The driving mechanism comprises a fixing seat (30) fixed on the surface of one of the semi-cylindrical plates of the U-shaped cantilever rod (7); an electric telescopic rod (29) extending vertically downward is fixed in the middle of the fixing seat (30); a four-claw U-shaped clamping rod (10) is fixed to the end of the extension rod of the electric telescopic rod (29); a vertical sliding rotating rod (11) is rotatably connected in the middle of the four-claw U-shaped clamping rod (10); mutually engaging anti-slip teeth are respectively provided at the bottom end of the sliding rotating rod (11) and the end close to the transmission rotating rod (14); and mutually attracting docking magnets (27) and docking magnets (22) are respectively embedded in the bottom end of the sliding rotating rod (11) and the end close to the transmission rotating rod (14); a bearing holder (5) is fixed between the two semi-cylindrical plates of the U-shaped cantilever rod (7) and close to the top of the sliding rotating rod (11); a radial bearing is embedded in the middle of the bearing holder (5); a hexagonal driving rotating rod (26) is rotatably connected in the middle of the radial bearing; The top of the movable rotating rod (11) is provided with a hexagonal jack that matches the hexagonal driving rotating rod (26); a driven bevel gear (4) is fixed to the outer circumferential wall of the hexagonal driving rotating rod (26) near the top; a motor support plate (702) is fixed between the two semi-cylindrical plates near the top of the electric telescopic rod (29); a driving main motor (28) is fixed to the top of the motor support plate (702) via bolts, and a transmission gear (28) is fixed to the top of the output shaft of the driving main motor (28) via a coupling. A driving rod, and a driving gear (31) meshing with a driven bevel gear (4) is fixed at the end of the driving rod; an annular retaining ring (1101) is fixed on the circumferential outer wall of the sliding rotating rod (11) between the four-claw U-shaped clamping rod (10), and thrust ball bearings (24) are fixed on both the upper and lower sides of the annular retaining ring (1101), and the two thrust ball bearings (24) are fixed between the supporting rods of the four-claw U-shaped clamping rod (10) on the sides away from the annular retaining ring (1101).

3. A disc tool magazine with a stable stop bracket according to claim 2, characterized in that: The diameter of the upper part of the sliding rotating rod (11) is greater than the diameter of the lower part, and the depth of the hexagonal insertion hole is equal to half the length of the sliding rotating rod (11).

4. A disc tool magazine with a stable stop bracket according to claim 1, characterized in that: A wear-resistant sliding ring is embedded in the circumferential inner wall of the centripetal sliding hole (603), and an annular oil collecting groove is formed on the circumferential inner wall of the wear-resistant sliding ring; the outer wall of the transmission rotating rod (14) forms a sliding fit with the inner wall of the wear-resistant sliding ring.

5. A disc tool magazine with a stable stop bracket according to claim 1, characterized in that: Two centrally symmetrical rectangular slots are formed at the ends of the two semi-cylindrical plates near the front side, and a centrally symmetrical clamping mechanism is clamped in the two rectangular slots, the clamping mechanism comprises a powerful electromagnet (8) embedded in the rectangular slot, a brake block (9) is slidably sleeved on the magnetic pole head end of the powerful electromagnet (8), and a countersunk hole is formed at one end of the brake block (9) near the powerful electromagnet (8), and a strong magnetic block that repels the powerful electromagnet (8) after power is turned on is fixed at the bottom of the countersunk hole; the control switch of the powerful electromagnet (8) is connected to the controller via a signal line, and the signal pressure sensor (17) is connected to the controller via the signal line.

6. A disc tool magazine with a stable stop bracket according to claim 5, characterized in that: A guide rod (23) is fixed to one side of the brake block (9) close to the U-shaped cantilever rod (7), and a guide hole matching the guide rod (23) is formed on the outer wall of the U-shaped cantilever rod (7).

7. A disc tool magazine with a stable stop bracket according to claim 1, characterized in that: An inserting hole (102) is formed at one end of the bottom of the arc-shaped groove of the fixed base (1) away from the rotating knife seat (6), and the inserting hole (102) is used to fix the U-shaped cantilever rod (7).

8. A disc tool magazine with a stable stop bracket according to claim 1, characterized in that: An L-shaped abutment frame (21) is fixed to the rear side of the vertical plate of the fixed base (1) near the top, and a clamping ring matching the worm (20) is fixed to the bottom end of the L-shaped abutment frame (21).

9. A disc tool magazine with a stable stop bracket according to claim 1, characterized in that: A marking position is provided at one end of the circumferential outer wall of the transmission rotating rod (14) away from the center; and a plurality of pressure rod corresponding numbers (18) distributed symmetrically with the center are provided at one end of the U-shaped cantilever rod (7) away from the anti-slip bearing group (2), and the number of the pressure rod corresponding numbers (18) corresponds to the number of workstations; and a signal light corresponding to the corresponding signal pressure sensor (17) is provided inside the pressure rod corresponding number (18).

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