Numerically-controlled machine tool with multiple tool bits capable of being replaced automatically

Abstract

The invention belongs to the technical field of numerical control machine tools, and particularly relates to a multi-tool-bit automatic replacement numerical control machine tool which comprises a numerical control machine tool body, a base is fixedly installed on the bottom face of the numerical control machine tool body, a transverse moving mechanism is installed on the surface of the base, and a longitudinal moving mechanism is arranged above the surface of the transverse moving mechanism. Different tool bits are placed according to operation requirements, when the tool bits need to be replaced, a push block is pushed by a rotating mechanism to move downwards, a rotating rod on a rotating seat is extruded, tool bit seats on the rotating seat are made to rotate reversely, the tool bit seats face downwards, tool bits on a numerical control machine tool body move upwards, the two tool bit seats are in a horizontal state, and the tool bits on the numerical control machine tool body can be replaced. And at the moment, the rotating plate rotates to exchange the positions of the two tool bit seats, so that the tool bits can be quickly replaced, the use effect is good, the time for manually replacing the tool bits is shortened, the working efficiency is improved, the joint positions of the tool bit seats are the same in size, and the adaptability is good.

Description

Technical Field

[0001] The invention belongs to the technical field of numerically controlled machine tools, and in particular relates to a numerically controlled machine tool with automatic replacement of multiple tool heads. Background Art

[0002] CNC machine tool is the abbreviation of digital control machine tool. It is an automated machine tool equipped with a program control system. The control system can logically process programs specified by control codes or other symbolic instructions, decode them, and express them in coded numbers. The information is input into the CNC device through the information carrier. After calculation and processing, the CNC device sends various control signals to control the action of the machine tool and automatically process the parts according to the shape and size required by the drawing. CNC machine tools have better solved the problem of complex, precise, small batch and multi-variety parts processing. They are flexible and high-efficiency automated machine tools, representing the development direction of modern machine tool control technology, and are a typical mechatronics product. During the CNC machine tool processing, tool alignment errors, excessive cutting tool feed, and too fast spindle speed will cause the cutting tool to break. In order to continue working, a new cutting tool must be replaced. According to the different requirements of the parts to be processed, different cutter heads need to be replaced. At this time, it is necessary to manually take time to turn multiple nuts in sequence to disassemble and assemble the cutter heads. The steps are relatively cumbersome, which increases the labor intensity and reduces the work efficiency of parts processing. Secondly, different specifications of cutting tools need to be replaced during the processing process, which requires matching spring collets to clamp them, which increases the processing cost and other problems; In order to solve the above problems, the present application proposes a CNC machine tool with automatic replacement of multiple tool heads. Summary of the invention

[0003] In order to solve the problems raised in the above background technology, the present invention provides a CNC machine tool with multiple tool heads that can be automatically replaced, which has the characteristics of automatic tool head replacement, good use effect, fast tool head replacement, and improved operation efficiency.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: a CNC machine tool with automatic replacement of multiple tool heads, comprising a CNC machine tool body, a base fixedly installed on the bottom surface of the CNC machine tool body, a lateral movement mechanism installed on the surface of the base, a longitudinal movement mechanism arranged above the surface of the lateral movement mechanism, the longitudinal movement mechanism sliding on the surface of the lateral movement mechanism, a processing table fixedly installed on the surface of the longitudinal movement mechanism, an upward movement mechanism installed on the surface of the CNC machine tool body, a driving mechanism installed on one side of the surface of the upward movement mechanism, a tool head seat plugged into the extended shaft end of the driving mechanism, a tool head replacement assembly installed on the surface of the driving mechanism, and a fixing assembly arranged inside the tool head replacement assembly; The tool head replacement assembly includes a cylinder part, a rotating module, a tool head replacement drive part, a shell, a mounting ring, a rotating seat, a plug-in cover, a rotating rod, a mounting hole, a roller, a rotating mechanism, a connecting part, a push block, a mounting cover and a rotating plate. The outer surface of the extended end of the driving mechanism is fixedly mounted with a cylinder part, the surface of the cylinder part is mounted with a rotating module, one side of the rotating module is mounted with a shell, the interior of the shell is fixedly connected with a mounting ring by bolts, the outer ring surface of the mounting ring is provided with a plurality of equidistantly arranged grooves, the outer sides of the grooves of the mounting ring are all provided with rotating seats, one end of the rotating seat opening is threadedly connected with a plug-in cover, and the plurality of tool head seats are respectively plugged into the plurality of plug-in covers The surface of the rotating seat is equipped with a rotating rod with a bent structure, and a mounting hole is opened at the bending position of the rotating rod. The rotating rod is fixed in a groove opened on the surface of the mounting ring through a rotating shaft and the mounting hole. A plurality of the rotating seats are arranged in a circle on the outer ring surface of the mounting ring. A rotating mechanism is installed on the surface of the shell at the center position of the mounting ring, and a mounting cover is installed on the one side surface of the shell at the inner ring surface of the mounting ring. The protruding shaft end of the rotating mechanism passes through the mounting cover and is installed with a connecting piece, and a push block is installed on the other end of the connecting piece. A cutter head replacement drive member is installed at the lower position of the cylinder member, and a rotating plate is installed on the protruding end of the cutter head replacement drive member through a bolt.

[0005] As a preferred embodiment of a CNC machine tool with automatic replacement of multiple tool heads in the present invention, a plug-in sleeve is installed inside the rotating seat, a limit sleeve is provided on the outer surface of the plug-in sleeve, a spring A is provided on the surface of the limit sleeve, and the two ends of the spring A are respectively connected to the rotating seat and the limit sleeve. Limiting balls are provided in the three circular holes opened on the surface of the plug-in sleeve, and the limiting balls roll in the circular holes. An insert rod is installed at one end of the tool head seat, and the insert rod is inserted in the plug-in sleeve.

[0006] As a preferred embodiment of a CNC machine tool with automatic replacement of multiple tool heads of the present invention, the inner circle of one end surface of the limiting sleeve is arranged in an arc-shaped structure, and the limiting sleeve abuts against the limiting ball.

[0007] As a preferred embodiment of the CNC machine tool with multiple tool heads that can be automatically replaced according to the present invention, one end of the insert rod is configured in a spherical structure, and the sphere is matched with the inner wall of the insert sleeve.

[0008] As a preferred embodiment of a CNC machine tool with automatic replacement of multiple tool heads in the present invention, a limit rod is arranged in the rotating seat at the center position of the plug-in sleeve, one end of the limit rod is installed on the inner wall of the rotating seat, a slot matched with the limit rod is provided on the surface of one spherical end of the plug-in rod, a limit block is symmetrically installed on the surface of the limit rod, and a limit groove matched with the limit block is provided inside the limit block and the plug-in rod, and the limit rod is plugged into the plug-in rod through the limit groove and the limit block.

[0009] As a preferred embodiment of a CNC machine tool with automatic replacement of multiple tool heads of the present invention, a strong magnetic block is provided at one end of the slot opened inside the insertion rod, and a second strong magnetic block is installed at one end of the limit rod inserted in the slot.

[0010] As a preferred embodiment of a CNC machine tool with automatic replacement of multiple tool heads in the present invention, a groove with a U-shaped structure is provided on the surface of the push block, and the two sides of the groove of the push block are arranged in a beveled surface structure, and a clamping block is symmetrically installed in the groove of the push block, and a stabilizing groove adapted to the clamping block is provided on the surface of the rotating rod.

[0011] Preferably, for a CNC machine tool with multiple tool heads that can be automatically replaced according to the present invention, a torsion spring is arranged in the mounting hole opened on the surface of the rotating rod, and both ends of the torsion spring are connected to the rotating shaft of the rotating rod.

[0012] As a preferred embodiment of a CNC machine tool with automatic replacement of multiple tool heads in the present invention, the fixing assembly includes a clamping plate, a sliding block, a fixing rod, a sliding sleeve, a stabilizing plate and a spring B. The clamping plates are symmetrically installed at both ends of the surface of the rotating plate. The surface of the clamping plate is provided with a clamping groove arranged in a circular ring structure. Fixing rods are fixed in the holes opened at both ends of the rotating plate. One end of the fixing rod is installed in the rotating plate. A sliding sleeve is arranged inside the rotating plate. The other end of the fixing rod is inserted in the sliding sleeve and connected to the stabilizing plate arranged in the sliding sleeve. A spring B is arranged in the sliding sleeve. One end of the spring B is connected to the stabilizing plate and the other end of the spring B is connected to the sliding sleeve. A sliding block is installed on the surface of the sliding sleeve. The ends of the sliding block are arranged in a beveled structure on both sides.

[0013] As a preferred embodiment of a CNC machine tool with automatic replacement of multiple tool heads of the present invention, a groove is provided on the surface of the tool head seat, a retaining ring is installed on the concave arc surface of the clamping plate, and the retaining ring is clamped in the groove.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. During the operation of the CNC machine tool body, if the cutter head needs to be automatically replaced, the rotating module rotates to drive the mounting ring to rotate. Multiple rotating seats and plug-in covers are arranged in the groove opened by the mounting ring, and the cutter head seat is installed in the plug-in cover. The cutter head on the cutter head seat can be placed in different positions according to the operation requirements. When the cutter head needs to be replaced, the push block is pushed downward by the rotating mechanism to squeeze the rotating rod on the rotating seat to reverse the cutter head seat on the rotating seat. At this time, the cutter head seat is facing downward and cooperates with the cutter head replacement drive member to move the cutter head on the CNC machine tool body upward so that the two cutter head seats are in a horizontal state. At this time, the rotating plate rotates to swap the positions of the two cutter head seats, thereby realizing rapid replacement of the cutter head, with good use effect, reducing the time of manual replacement of the cutter head, and improving the operation efficiency. The joint positions of the cutter head seats are all of the same size and have good adaptability.

[0015] 2. When the rotating plate is used to replace the cutter head, in order to enhance the stability during the replacement process, a fixed component is set up. The rotating plate rotates the sliding block to contact the cutter head seat first. Under the influence of external force, the sliding block moves toward the inside of the rotating plate. At this time, the sliding sleeve on one side of the sliding block moves toward the position of the fixed rod. At this time, the cutter head seat is clamped to the clamping plate for limiting. Under the tension of spring B, the sliding block cooperates with the clamping plate for fixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural diagram of the locking state between the rotating plate and the cutter head seat in the present invention; Figure 3 This is a diagram of the internal structure of the cutter head replacement assembly of the present invention; Figure 4 This is a diagram of the cooperation between the roller and the push block in the present invention; Figure 5 It is a working state diagram of the push block in the present invention; Figure 6 This is a structural diagram showing the mounting ring in the present invention; Figure 7 It is a diagram of the installation structure between the plug sleeve, the limit sleeve and the spring A in the present invention; Figure 8 It is a cross-sectional structural diagram of the rotating seat and the plug-in cover in the present invention; Fig. 9 It is a schematic diagram of the installation structure of the limiting ball in the present invention; Fig.10 It is a schematic diagram of the internal structure of the rotating seat in the present invention; Fig.11 For the present invention Fig.10 A is an enlarged schematic diagram of the structure; Fig.12 It is a schematic diagram of the structure of the fixing component in the present invention; Fig.13 It is a schematic diagram of the internal structure of the sliding sleeve in the present invention.

[0017] In the figure: 1. CNC machine tool body; 11. Upward movement mechanism; 12. Driving mechanism; 13. Base; 14. Lateral movement mechanism; 15. Longitudinal movement mechanism; 16. Processing table; 17. Tool head seat; 2. Tool head replacement assembly; 21. Cylinder; 22. Rotating module; 23. Tool head replacement drive; 24. Housing; 25. Mounting ring; 26. Rotating seat; 27. Plug cover; 28. Rotating rod; 281. Torsion spring; 29. ​​Mounting hole; 210. Plug sleeve; 211. Limit sleeve; 212. Spring A; 213, limit ball; 214, plug rod; 215, limit rod; 216, limit block; 217, slot; 218, limit slot; 219, roller; 220, rotating mechanism; 221, connecting piece; 222, push block; 223, clamping block; 224, stabilizing slot; 225, mounting cover; 226, rotating plate; 3, fixing assembly; 32, clamping plate; 33, retaining ring; 34, clamping slot; 35, sliding block; 36, fixing rod; 37, sliding sleeve; 38, stabilizing plate; 39, spring B. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0019] like Figure 1 As shown: A CNC machine tool with automatic replacement of multiple tool heads comprises a CNC machine tool body 1, a base 13 is fixedly installed on the bottom surface of the CNC machine tool body 1, a lateral moving mechanism 14 is installed on the surface of the base 13, a longitudinal moving mechanism 15 is arranged above the surface of the lateral moving mechanism 14, the longitudinal moving mechanism 15 slides on the surface of the lateral moving mechanism 14, a processing table 16 is fixedly installed on the surface of the longitudinal moving mechanism 15, an upward moving mechanism 11 is installed on the surface of the CNC machine tool body 1, a driving mechanism 12 is installed on one side of the surface of the upward moving mechanism 11, a tool head seat 17 is inserted at the extended shaft end of the driving mechanism 12, a tool head replacement component 2 is installed on the surface of the driving mechanism 12, and a fixing component 3 is arranged inside the tool head replacement component 2.

[0020] More specifically: like Figure 1-Figure 10 As shown: In combination with the above content, the tool head replacement assembly 2 includes a cylinder part 21, a rotating module 22, a tool head replacement drive part 23, a shell 24, a mounting ring 25, a rotating seat 26, a plug cover 27, a rotating rod 28, a mounting hole 29, a roller 219, a rotating mechanism 220, a connecting part 221, a push block 222, a mounting cover 225 and a rotating plate 226. The outer surface of the extended end of the driving mechanism 12 is fixedly mounted with a cylinder part 21, the surface of the cylinder part 21 is mounted with a rotating module 22, one side of the rotating module 22 is mounted with a shell 24, the interior of the shell 24 is fixedly connected with a mounting ring 25 by bolts, the outer surface of the mounting ring 25 is provided with a plurality of equidistantly arranged grooves, the outer sides of the grooves of the mounting ring 25 are all provided with rotating seats 26, one end of the rotating seat 26 is threadedly connected with a plug cover 27, and a plurality of tool head seats 17 are respectively inserted into It is connected to multiple plug-in covers 27, and the surface of the rotating seat 26 is installed with a rotating rod 28 of a bent structure. The bending position of the rotating rod 28 is provided with a mounting hole 29. The rotating rod 28 is fixed in a groove provided on the surface of the mounting ring 25 through a rotating shaft and the mounting hole 29. Multiple rotating seats 26 are arranged in a circle on the outer ring surface of the mounting ring 25. The surface of the shell 24 is located at the center position of the mounting ring 25 and a rotating mechanism 220 is installed. The surface of one side of the shell 24 is located at the inner ring surface of the mounting ring 25 and a mounting cover 225 is installed. The protruding shaft end of the rotating mechanism 220 passes through the mounting cover 225 and is installed with a connecting member 221. The other end of the connecting member 221 is installed with a push block 222. A tool head replacement drive member 23 is installed at the lower position of the cylinder member 21, and a rotating plate 226 is installed on the protruding end of the tool head replacement drive member 23 through bolts.

[0021] The tool head on the main body 1 of the numerical control machine tool is automatically replaced if it is necessary to replace the tool head during operation. The rotating module 22 rotates to drive the mounting ring 25 to rotate. A plurality of rotating seats 26 and plug-in covers 27 are arranged in the groove provided in the mounting ring 25. By installing the tool head seat 17 in the plug-in cover 27, the tool head on the tool head seat 17 can be placed in different positions according to the operation requirements. When the tool head needs to be replaced, the push block 222 is pushed downward by the rotating mechanism 220 to squeeze the rotating rod 28 on the rotating seat 26 to reverse the tool head seat 17 on the rotating seat 26. At this time, the tool head seat 17 is facing downward and cooperates with the tool head replacement driving member 23 to work. The tool head on the main body 1 of the numerical control machine tool is moved up so that the two tool head seats 17 are in a horizontal state. At this time, the rotating plate 226 rotates to swap the positions of the two tool head seats 17, thereby realizing rapid replacement of the tool head, having a good use effect, reducing the time for manual replacement of the tool head, and improving the operation efficiency. The joint positions of the tool head seats 17 are all of the same size and have good adaptability.

[0022] Going further: like Figure 1-Figure 10 As shown: In order to improve the stability of the tool changing process of the tool head seat 17, in an optional embodiment: a plug-in sleeve 210 is installed inside the rotating seat 26, the outer surface of the plug-in sleeve 210 is provided with a limit sleeve 211, the surface of the limit sleeve 211 is provided with a spring A212, the two ends of the spring A212 are respectively connected to the rotating seat 26 and the limit sleeve 211, and the three circular holes opened on the surface of the plug-in sleeve 210 are provided with limit balls 213, and the limit balls 213 roll in the circular holes. An insert rod 214 is installed at one end of the tool head seat 17, and the insert rod 214 is plugged into the plug-in sleeve 210.

[0023] In the present embodiment: by installing an insertion rod 214 at one end of the cutter head seat 17, the insertion rod 214 is inserted into the plug-in sleeve 210, and at this time, the limiting sleeve 211 drives the limiting sleeve 211 to slide on the surface of the plug-in sleeve 210 under the tension of the spring A212, and squeezes the limiting ball 213 in the hole opened in the plug-in sleeve 210, and squeezes the limiting ball 213 into the inside of the plug-in sleeve 210, thereby completing the fixation of the cutter head seat 17, with a simple structure and convenient installation and disassembly.

[0024] It should be noted that the inner circle of one end surface of the limiting sleeve 211 is arranged in an arc-shaped structure, the limiting sleeve 211 is in contact with the limiting ball 213, and the limiting ball 213 rolls in the blind groove provided in the plug-in sleeve 210, and the blind groove limits the position of the limiting ball 213.

[0025] It should be noted that one end of the insert rod 214 is in a spherical structure, and the sphere is matched with the inner wall of the plug sleeve 210 to improve the stability of the cutter head seat 17.

[0026] Going further: like Figure 10-11 As shown: In order to further improve the stability of the cutter head during operation, in an optional embodiment: a limit rod 215 is arranged at the center position of the plug-in sleeve 210 in the rotating seat 26, one end of the limit rod 215 is installed on the inner wall of the rotating seat 26, a slot 217 matched with the limit rod 215 is provided on the surface of one spherical end of the plug rod 214, and a limit block 216 is symmetrically installed on the surface of the limit rod 215. The limit block 216 and the inside of the plug rod 214 are provided with a limit groove 218 matched with the limit block 216, and the limit rod 215 is inserted into the plug rod 214 through the limit groove 218 and the limit block 216.

[0027] In this embodiment, the limiting rod 215 is inserted into the slot 217 formed by the inserting rod 214, and a limiting block 216 is installed to limit the position, thereby improving the stability of the cutter head during operation.

[0028] It should be noted that: a strong magnetic block is disposed at one end of the slot 217 opened inside the insertion rod 214 , and a second strong magnetic block is installed at one end of the limiting rod 215 inserted into the slot 217 .

[0029] Going further: like Figure 1-Figure 13 As shown: In an optional embodiment: a U-shaped groove is provided on the surface of the push block 222, and the two sides of the groove of the push block 222 are arranged in a beveled surface structure. A clamping block 223 is symmetrically installed in the groove of the push block 222, and a stabilizing groove 224 adapted to the clamping block 223 is provided on the surface of the rotating rod 28.

[0030] In this embodiment: a U-shaped groove is provided on the surface of the push block 222 to install the clamping block 223. When the push block 222 pushes the rotating rod 28 to rotate, the clamping block 223 is clamped into the stabilizing groove 224 provided on the surface of the rotating rod 28, so that the stability of the rotating seat 26 and the plug-in cover 27 is further improved.

[0031] Going further: like Figure 6 As shown: In an optional embodiment: a torsion spring 281 is disposed in the mounting hole 29 opened on the surface of the rotating rod 28 , and both ends of the torsion spring 281 are connected to the rotating shaft of the rotating rod 28 .

[0032] In this embodiment, by installing the torsion spring 281 in the installation hole 29 opened in the rotating rod 28, the stability of the cutter head can be facilitated when it is not replaced.

[0033] More specifically: like Figure 1-Figure 13 As shown: In combination with the above content, the fixing component 3 includes a clamping plate 32, a sliding block 35, a fixing rod 36, a sleeve 37, a stabilizing plate 38 and a spring B39. The clamping plates 32 are symmetrically installed at both ends of the surface of the rotating plate 226. The surface of the clamping plate 32 is provided with a clamping groove arranged in a circular ring structure. The holes opened at both ends of the rotating plate 226 are fixed with fixing rods 36. One end of the fixing rod 36 is installed in the rotating plate 226. A sleeve 37 is arranged inside the rotating plate 226. The other end of the fixing rod 36 is inserted into the sleeve 37 and connected to the stabilizing plate 38 arranged in the sleeve 37. A spring B39 is arranged in the sleeve 37. One end of the spring B39 is connected to the stabilizing plate 38, and the other end of the spring B39 is connected to the sleeve 37. The surface of the sleeve 37 is installed with a sliding block 35, and the ends of the sliding block 35 are arranged in a beveled structure on both sides.

[0034] In this embodiment: when the rotating plate 226 is used to replace the cutter head, in order to enhance the stability during the cutter head replacement process, a fixing component 3 is provided, and the rotating plate 226 rotates the sliding block 35 to first contact the cutter head seat 17, and the sliding block 35 moves toward the inside of the rotating plate 226 under the influence of external force. At this time, the sliding sleeve 37 on one side of the sliding block 35 moves toward the position of the fixed rod 36. At this time, the cutter head seat 17 is clamped to the clamping plate 32 for limiting, and the sliding block 35 is fixed with the clamping plate 32 under the tension of the spring B39.

[0035] It should be noted that: a groove 34 is provided on the surface of the cutter head seat 17, and a snap ring 33 is installed on the concave arc surface of the clamping plate 32, and the snap ring 33 is clamped in the groove 34. By providing the groove 34 on the surface of the cutter head seat 17, the snap ring 33 on the clamping plate 32 is clamped in the groove 34. The cutter head seat 17 can be fixed, and the use effect is good.

[0036] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention to solve the problems raised in the above background technology.

Claims

1. A CNC machine tool with multiple tool heads that can be automatically replaced, comprising a CNC machine tool body (1), characterized in that: A base (13) is fixedly mounted on the bottom surface of the CNC machine tool body (1), a transverse moving mechanism (14) is mounted on the surface of the base (13), a longitudinal moving mechanism (15) is arranged above the surface of the transverse moving mechanism (14), the longitudinal moving mechanism (15) slides on the surface of the transverse moving mechanism (14), a processing table (16) is fixedly mounted on the surface of the longitudinal moving mechanism (15), an upward moving mechanism (11) is mounted on the surface of the CNC machine tool body (1), a driving mechanism (12) is mounted on one side of the surface of the upward moving mechanism (11), a tool head seat (17) is plugged into the extended shaft end of the driving mechanism (12), a tool head replacement component (2) is mounted on the surface of the driving mechanism (12), and a fixing component (3) is arranged inside the tool head replacement component (2); The tool head replacement assembly (2) comprises a cylinder member (21), a rotating module (22), a tool head replacement drive member (23), a housing (24), a mounting ring (25), a rotating seat (26), a plug cover (27), a rotating rod (28), a mounting hole (29), a roller (219), a rotating mechanism (220), a connecting member (221), a push block (222), a mounting cover (225) and a rotating plate (226). The outer surface of the extended end of the drive mechanism (12) is fixedly mounted with the cylinder member (21). 1), a rotating module (22) is installed on the surface of the cylinder member (21), a housing (24) is installed on one side of the rotating module (22), a mounting ring (25) is fixedly connected to the inside of the housing (24) by bolts, a plurality of grooves arranged at equal intervals are opened on the outer surface of the mounting ring (25), a rotating seat (26) is arranged outside the grooves of the mounting ring (25), a plug-in cover (27) is threadedly connected to one end of the opening of the rotating seat (26), and a plurality of the tool head seats (17) are respectively Inserted in a plurality of plug-in covers (27), the surface of each rotating seat (26) is provided with a rotating rod (28) with a bent structure, a mounting hole (29) is provided at the bent position of the rotating rod (28), the rotating rod (28) is fixed in a groove provided on the surface of the mounting ring (25) through a rotating shaft and the mounting hole (29), a plurality of rotating seats (26) are arranged in a circle on the outer surface of the mounting ring (25), and a rotating mechanism (29) is provided on the surface of the housing (24) at the center of the mounting ring (25). 220), a mounting cover (225) is mounted on one side surface of the housing (24) and located on the inner surface of the mounting ring (25), the protruding shaft end of the rotating mechanism (220) passes through the mounting cover (225) and is mounted with a connecting member (221), a push block (222) is mounted on the other end of the connecting member (221), a cutter head replacement drive member (23) is mounted at a position below the cylinder member (21), and a rotating plate (226) is mounted on the protruding end of the cutter head replacement drive member (23) via bolts.

2. The CNC machine tool with multiple tool heads that can be automatically replaced according to claim 1, characterized in that: A plug sleeve (210) is installed inside the rotating seat (26), a limit sleeve (211) is sleeved on the outer surface of the plug sleeve (210), a spring A (212) is sleeved on the surface of the limit sleeve (211), two ends of the spring A (212) are respectively connected to the rotating seat (26) and the limit sleeve (211), three circular holes opened on the surface of the plug sleeve (210) are provided with limit balls (213), the limit balls (213) roll in the circular holes, and an insertion rod (214) is installed at one end of the tool head seat (17), and the insertion rod (214) is inserted into the plug sleeve (210).

3. The CNC machine tool with multiple tool heads that can be automatically replaced according to claim 2 is characterized in that: The inner circle of one end surface of the limiting sleeve (211) is arranged in an arc-shaped structure, and the limiting sleeve (211) is in contact with the limiting ball (213).

4. The CNC machine tool with multiple tool heads that can be automatically replaced according to claim 2 is characterized in that: One end of the insertion rod (214) is provided in a spherical structure, and the spherical ball is adapted to the inner wall of the insertion sleeve (210).

5. The CNC machine tool with multiple tool heads that can be automatically replaced according to claim 2, characterized in that: A limit rod (215) is arranged in the rotating seat (26) at the center position of the plug sleeve (210), one end of the limit rod (215) is mounted on the inner wall of the rotating seat (26), a slot (217) matching the limit rod (215) is provided on the surface of one spherical end of the plug rod (214), a limit block (216) is symmetrically mounted on the surface of the limit rod (215), a limit groove (218) matching the limit block (216) is provided inside the limit block (216) and the plug rod (214), and the limit rod (215) is plugged into the plug rod (214) via the limit groove (218) and the limit block (216).

6. The CNC machine tool with multiple tool heads that can be automatically replaced according to claim 5, characterized in that: A strong magnetic block is provided at one end of a slot (217) provided inside the insertion rod (214), and a second strong magnetic block is installed at one end of the limit rod (215) inserted into the slot (217).

7. The CNC machine tool with multiple tool heads that can be automatically replaced according to claim 1, characterized in that: A U-shaped groove is provided on the surface of the push block (222), both sides of the groove of the push block (222) are arranged in a beveled surface structure, a clamping block (223) is symmetrically installed in the groove of the push block (222), and a stabilizing groove (224) adapted to the clamping block (223) is provided on the surface of the rotating rod (28).

8. The CNC machine tool with multiple tool heads that can be automatically replaced according to claim 1, characterized in that: A torsion spring (281) is arranged in a mounting hole (29) opened on the surface of the rotating rod (28), and both ends of the torsion spring (281) are connected to the rotating shaft of the rotating rod (28).

9. The CNC machine tool with multiple tool heads that can be automatically replaced according to claim 1, characterized in that: The fixing assembly (3) comprises a clamping plate (32), a sliding block (35), a fixing rod (36), a sliding sleeve (37), a stabilizing plate (38) and a spring B (39); the clamping plates (32) are symmetrically mounted at both ends of the surface of the rotating plate (226); the surface of the clamping plate (32) is provided with a clamping groove arranged in a circular ring structure; fixing rods (36) are fixed in holes provided at both ends of the rotating plate (226); one end of the fixing rod (36) is mounted in the rotating plate (226); the rotating plate ( 226) is provided with a sliding sleeve (37) inside, the other end of the fixing rod (36) is inserted into the sliding sleeve (37) and connected to a stabilizing plate (38) provided in the sliding sleeve (37), a spring B (39) is provided in the sliding sleeve (37), one end of the spring B (39) is connected to the stabilizing plate (38), and the other end of the spring B (39) is connected to the sliding sleeve (37), a sliding block (35) is installed on the surface of the sliding sleeve (37), and both sides of the end of the sliding block (35) are arranged in a beveled structure.

10. The CNC machine tool with multiple tool heads that can be automatically replaced according to claim 9, characterized in that: A clamping groove (34) is provided on the surface of the cutter head seat (17), a clamping ring (33) is installed on the concave arc surface of the clamping plate (32), and the clamping ring (33) is clamped in the clamping groove (34).

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