Cutter head assembly and mechanism for cutting annular cutting groove

Abstract

The utility model relates to the technical field of tunnel cutting slotting devices, and discloses a cutterhead assembly and mechanism for cutting an annular cutting groove, the cutterhead assembly comprises a rotating frame and a plurality of cutterhead assemblies, the rotating frame drives the plurality of cutterhead assemblies to move along a circumferential track, each cutterhead assembly comprises a plurality of cutterheads which are coaxially arranged, and the cutterhead assemblies are arranged on the rotating frame. The rotating axis A of each cutter head is perpendicular to the rotating axis B of the rotating frame, the radiuses of the circular motion trails of all the cutter heads are different, and the circular motion trail paths of all the cutter heads are connected with one another so that no residues exist in the cutting path; the cutterhead assembly and the cutterhead mechanism for cutting the annular cutting groove solve the problems that when a water mill drill is used for excavating a tunnel, the water mill drill needs to be manually operated to conduct repeated cutting one by one along a circular track, the footage is extremely slow, and time and labor are wasted in operation.

Description

Technical Field

[0001] This utility model relates to the technical field of tunnel cutting and grooving devices, specifically to a cutter head assembly and mechanism for cutting annular cutting grooves. Background Technology

[0002] Water-jet drilling minimizes disturbance to the mountain rock and carries low risk. Water-jet drilling involves using a small-diameter cutting cylinder to cut the soil in a circular pattern at high speed. Specifically, it requires operating along a circular trajectory to cut a complete circle, facilitating the subsequent removal of the central soil layer. This method of tunnel excavation requires manual operation of the drill, repeatedly cutting point by point along the circular trajectory, resulting in extremely slow progress and is time-consuming and labor-intensive. Furthermore, after excavation, a significant amount of residual soil remains along the circular groove, requiring subsequent manual removal, which impacts the overall tunnel excavation progress and efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a cutting disc assembly and mechanism for cutting annular cutting grooves, so as to solve at least one of the above-mentioned problems existing in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A cutting disc assembly for cutting annular grooves includes a rotating frame and multiple cutting disc assemblies. The rotating frame drives the multiple cutting disc assemblies to move along a circumferential trajectory. Each cutting disc assembly includes multiple cutting discs arranged coaxially. The rotation axis A of the cutting discs is perpendicular to the rotation axis B of the rotating frame. The radius of the circumferential motion trajectory of any cutting disc is different. The circumferential motion trajectory paths of all cutting discs are interconnected to achieve a cutting path without residue.

[0006] This technical solution utilizes a rotating frame that drives multiple cutter head assemblies along a circular trajectory, thus achieving circumferential trajectory drive for the cutter head assemblies. Since the cutter head assembly comprises multiple coaxially arranged cutter heads (i.e., layered cutter heads), with the cutter head's rotation axis A perpendicular to the rotating frame's rotation axis B, the cutter head rotates about axis A. Simultaneously, the layered cutter heads move in a circular trajectory around the same axis B. During this process, the circular trajectories of different cutter heads are different, enabling cutting with varying trajectories from multiple cutter heads. This allows for the creation of a wider annular cutting groove even with a relatively thin cutter head, facilitating subsequent removal of soil from the center of the groove. The thinner cutter head and smaller cutting surface improve the smoothness of soil cutting and increase cutting efficiency. Because the radius of the circular motion trajectory of any cutter head in the multiple cutter head assemblies is different, the number of cutter heads can be maximized to create a wider annular cutting groove, further facilitating the removal of soil from the center of the groove. Because the circular motion paths of all the cutterheads are interconnected to achieve a clean cutting path with no residue, the cutting groove is cleaner and the tunnel wall is smoother. After cutting, there is no need to clean the tunnel wall, which improves the tunnel excavation progress and work efficiency.

[0007] Furthermore, in order to arrange more cutter heads with different circular motion trajectories and make the trajectories interconnected, a synchronous pulley is also included. Multiple cutter heads are fixedly connected to both sides of the synchronous pulley. The cutter head located outside the synchronous pulley is the outer cutter head, and the cutter head located inside the synchronous pulley is the inner cutter head.

[0008] This utility model also provides a mechanism for cutting annular grooves, including a lead screw, a guide rod, a lead screw motor, a tool holder, and a cutting disc assembly for cutting annular grooves. The lower end of the rotating frame is connected to a rotary drive mechanism, and the upper end of the rotating frame is provided with a tool holder mounting frame. The two ends of the lead screw are rotatably connected to the tool holder mounting frame, and the two ends of the guide rod are fixedly connected to the tool holder mounting frame. The lead screw and the guide rod are arranged parallel to each other and both extend forward. The two ends of the tool holder are slidably engaged with the corresponding guide rods. A lead screw nut is threaded onto the lead screw, and the lead screw nut is fixedly connected to the tool holder. The lead screw motor drives the lead screw to rotate.

[0009] In this technical solution, the lower end of the rotating frame is connected to the rotary drive mechanism, and the upper end of the rotating frame is equipped with a tool holder mounting frame. The rotary drive mechanism drives the rotation of the rotating frame to achieve circumferential rotation of the tool holder mounting frame. The two ends of the lead screw are rotatably connected to the tool holder mounting frame, and the two ends of the guide rod are fixedly connected to the tool holder mounting frame. The lead screw and guide rod are parallel and both extend forward. The two ends of the tool holder are slidably engaged with the corresponding guide rods. A lead screw nut is threaded onto the lead screw, and the lead screw nut is fixedly connected to the tool holder. The lead screw motor drives the lead screw to rotate. In specific operation, while the rotary drive mechanism drives the rotating frame to rotate circumferentially, the tool holder is also rotated. The screw motor drives the screw to rotate, and the screw drives the cutter head to move along the guide rod through the screw nut. During this process, the cutter head moves forward step by step, driving the cutter head assembly forward step by step. The circumferential rotation trajectory of the rotating frame determines the size of the tunnel. During the continuous circumferential rotation, the cutter head assembly gradually moves towards the deeper soil layer, making the movement trajectory of the cutter head assembly in the soil layer similar to a spiral propulsion method. The cutting depth continuously increases, thus enabling continuous circular trajectory grooving. There is no need for manual use of water-cooled drills to repeatedly cut small-sized soil. The entire grooving process is highly automated, efficient, and saves time and labor.

[0010] Furthermore, it also includes a cutter head drive assembly. The cutter holder has multiple hollow arms extending forward, which are spaced apart along the cutting trajectory. The cutter head assembly is located at the front end of the hollow arms. The cutter head drive assembly includes a first synchronous pulley, a second synchronous pulley, a synchronous belt, and a cutter head motor. The synchronous belt passes through both ends of the hollow arms and is connected to the first and second synchronous pulleys respectively. The first synchronous pulley is rotatably connected to the free end of the hollow arm. The cutter head assembly is coaxially fixed on the first synchronous pulley. The cutter head motor is located on the cutter holder and drives the second synchronous pulley to rotate.

[0011] The hollow arm facilitates the installation of the cutter head assembly, and the synchronous pulley drive allows the cutter head motor to be installed away from the cutter head assembly, which facilitates subsequent use and maintenance without affecting the drive of the cutter head assembly.

[0012] Furthermore, a water-cooling pipe is provided on the tool holder near the hollow arm, and the water-cooling pipe is connected to an external water source for cooling the tool disc assembly; a suction pipe is provided on the tool holder, and the suction pipe is connected to an external suction device for discharging the material generated in the cutting groove.

[0013] Furthermore, the rotary drive mechanism includes a fixed disk, a first rotary joint is provided in the middle of the fixed disk, a second rotary joint is provided inside the first rotary joint, the first rotary joint is connected to a water cooling pipe, and the second rotary joint is connected to a suction pipe.

[0014] The first rotary joint allows the water cooling pipes to move in tandem with the rotating frame without affecting the operation of the water circuit. The second rotary joint allows the suction pipes to move in tandem with the rotating frame without affecting the material suction operation.

[0015] Furthermore, the rotary drive mechanism includes a rotary motor, an outer ring, an internal gear ring, and a gear. The rotary motor is disposed on the outside of the fixed disk, the outer ring is coaxially fixedly disposed on the inside of the fixed disk, the internal gear ring is coaxially disposed inside the outer ring and the two are rotatably engaged, the internal gear ring is fixedly connected to the lower end of the rotating frame, the gear meshes with the internal gear ring, and the rotary motor drives the gear to rotate.

[0016] A rotary motor drives a gear to rotate, which in turn drives an internal gear ring to rotate. The internal gear ring then drives a rotating frame to rotate, providing the rotating frame with continuous and stable rotational power.

[0017] Furthermore, to improve the overall structural stability of the tool holder, the tool holder is an arc-shaped tool holder and also includes an arc-shaped connecting plate. The arc-shaped connecting plate has the same curvature as the arc-shaped tool holder. Multiple hollow arms, water-cooling pipes, and suction pipes are all fixedly connected to the arc-shaped connecting plate near their free ends. The arc-shaped connecting plate also serves to form a more enclosed space in conjunction with the cutting groove, which is more conducive to suction and material discharge.

[0018] To facilitate the installation of the rotating frame and improve its overall structural stability, the rotating frame includes a bottom connecting frame and side support frames. The bottom connecting frame is connected to the rotation drive mechanism, and the side support frames are symmetrically arranged on both sides between the bottom connecting frame and the tool holder mounting frame. A connecting frame is provided between the side support frames.

[0019] Furthermore, in order to facilitate the installation of the cutter head and improve the cutting effect of the cutter head, the end of the hollow arm is provided with a cutter head mounting seat. The first synchronous wheel is located in the cutter head mounting seat. Both ends of the first synchronous wheel have connecting shafts. Multiple cutter discs are fixedly installed on the connecting shafts in layers. Multiple blades are evenly arranged circumferentially on the cutter discs.

[0020] The beneficial effects of this utility model are as follows: In this technical solution, the rotating frame drives multiple cutter head assemblies to move along a circular trajectory, thereby achieving circular trajectory drive for the cutter head assemblies. Since the cutter head assembly includes multiple coaxially arranged cutter heads (i.e., layered installation), the rotation axis A of the cutter head is perpendicular to the rotation axis B of the rotating frame. The cutter head rotates about axis A, and simultaneously, the layered cutter heads move in a circular trajectory about the same rotation axis B. During this process, the circular trajectories of different cutter heads are different, enabling cutting with different circular trajectories from multiple cutter heads. This allows for the cutting of a wider annular cutting groove even with a relatively thin single cutter head, facilitating the subsequent removal of soil from the center of the annular cutting groove. The thinner single cutter head results in a smaller cutting surface, improving the smoothness of soil cutting and increasing cutting efficiency. Because the radius of the circular motion trajectory of any cutter head in the multiple cutter head assemblies is different, the number of cutter heads can be maximized to cut a wider annular cutting groove, further facilitating the removal of soil from the center of the annular cutting groove. Because the circular motion paths of all the cutterheads are interconnected to achieve a clean cutting path with no residue, the cutting groove is cleaner and the tunnel wall is smoother. After cutting, there is no need to clean the tunnel wall, which improves the tunnel excavation progress and work efficiency.

[0021] In this technical solution, the lower end of the rotating frame is connected to the rotary drive mechanism, and the upper end of the rotating frame is equipped with a tool holder mounting frame. The rotary drive mechanism drives the rotation of the rotating frame to achieve circumferential rotation of the tool holder mounting frame. The two ends of the lead screw are rotatably connected to the tool holder mounting frame, and the two ends of the guide rod are fixedly connected to the tool holder mounting frame. The lead screw and guide rod are parallel and both extend forward. The two ends of the tool holder are slidably engaged with the corresponding guide rods. A lead screw nut is threaded onto the lead screw, and the lead screw nut is fixedly connected to the tool holder. The lead screw motor drives the lead screw to rotate. In specific operation, while the rotary drive mechanism drives the rotating frame to rotate circumferentially, the tool holder is also rotated. The screw motor drives the screw to rotate, and the screw drives the cutter head to move along the guide rod through the screw nut. During this process, the cutter head moves forward step by step, driving the cutter head assembly forward step by step. The circumferential rotation trajectory of the rotating frame determines the size of the tunnel. During the continuous circumferential rotation, the cutter head assembly gradually moves towards the deeper soil layer, making the movement trajectory of the cutter head assembly in the soil layer similar to a spiral propulsion method. The cutting depth continuously increases, thus enabling continuous circular trajectory grooving. There is no need for manual use of water-cooled drills to repeatedly cut small-sized soil. The entire grooving process is highly automated, efficient, and saves time and labor. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention in the state of cutting along a circular motion trajectory;

[0023] Figure 2This is a partial structural diagram of the present invention in the state of cutting along a circular motion trajectory;

[0024] Figure 3 This is a magnified view of the structure at point A in the diagram;

[0025] Figure 4 This is a first-view structural schematic diagram of the present invention;

[0026] Figure 5 For this Figure 4 A magnified schematic diagram of the local structure at point B;

[0027] Figure 6 This is a structural schematic diagram from a second perspective of the present invention;

[0028] Figure 7 This is a structural schematic diagram from a third-view perspective of the present invention;

[0029] Figure 8 This is a schematic diagram of the structure of the lower part of the hidden rotating frame in this utility model;

[0030] Figure 9 This is a first-view structural schematic diagram of the hidden components in this utility model;

[0031] Figure 10 This is a structural schematic diagram of the hidden components in this utility model from a second perspective;

[0032] Figure 11 For this Figure 10 A magnified schematic diagram of the local structure at point C;

[0033] Figure 12 This is a schematic diagram of the annular cutting groove and the soil in the middle of the present invention.

[0034] In the diagram: 1. Rotating frame; 1.1. Bottom connecting frame; 1.2. Side support frame; 1.3. Connecting frame; 2. Cutter head assembly; 2.1. First cutter head assembly; 2.2. Second cutter head assembly; 2.3. Third cutter head assembly; 2.4. Fourth cutter head assembly; 3. Circular motion trajectory; 4. Cutter head; 4.1. A cutter head; 4.2. B cutter head; 4.3. Outer cutter head; 4.4. Inner cutter head; 5. Lead screw; 6. Guide rod; 7. Lead screw motor; 8. Tool holder; 9. Rotary drive mechanism. ; Tool holder mounting frame 10; Hollow arm 11; First synchronous pulley 12; Second synchronous pulley 13; Tool head motor 14; Water cooling pipe 15; Suction pipe 16; Fixed plate 17; First rotary joint 18; Second rotary joint 19; Rotary motor 20; Outer ring 21; Internal gear ring 22; Gear 23; Arc-shaped connecting plate 24; Tool head mounting seat 25; Connecting shaft 26; Blade 27; Screw nut 28; Annular cutting groove 29; Central soil 30. Detailed Implementation

[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.

[0036] Example 1:

[0037] like Figures 1-12 As shown, this embodiment provides a cutting disc assembly for cutting annular grooves, including a rotating frame 1 and multiple cutting disc assemblies 2. The rotating frame 1 drives the multiple cutting disc assemblies 2 to move along a circular trajectory. The cutting disc assembly 2 includes multiple cutting discs 4 arranged coaxially. The rotation axis A of the cutting disc 4 is perpendicular to the rotation axis B of the rotating frame 1. The radius of the circular motion trajectory 3 of any cutting disc 4 is different. The circular motion trajectory 3 paths of all cutting discs 4 are interconnected to achieve a cutting path without residue.

[0038] In this technical solution, the rotating frame 1 drives multiple cutter head assemblies 2 to move along a circular trajectory, thus achieving circumferential trajectory drive for the cutter head assemblies 2. Since the cutter head assembly 2 includes multiple coaxially arranged cutter heads 4, such as... Figure 3 , Figure 5 As shown, the cutter heads 4 are installed in layers. The rotation axis A of the cutter head 4 is perpendicular to the rotation axis B of the rotating frame 1. The cutter head 4 rotates about the rotation axis A. While the cutter head 4 rotates, the multiple cutter heads 4 installed in layers move in a circular trajectory about the same rotation axis B. During this process, the circular trajectories of different cutter heads 4 are different, so as to achieve cutting with different circular trajectories of multiple cutter heads 4. Even with a relatively thin cutter head 4, a wider annular cutting groove 29 can be cut, which is convenient for the subsequent removal of the soil 30 in the center of the annular cutting groove 29. The thinner cutter head 4 has a smaller cutting surface, which can improve the smoothness of soil cutting and improve cutting efficiency. Since the radius of the circular motion trajectory 3 of any cutter head 4 in the multiple cutter head assembly 2 is different, the number of cutter heads 4 can be increased as much as possible to cut a wider annular cutting groove 29, which is more conducive to the removal of the soil 30 in the center of the annular cutting groove 29. Because the circular motion trajectories 3 of all the cutterheads 4 are interconnected to achieve a clean cutting path with no residue, the cutting groove is cleaner and the inner wall of the tunnel is smoother. After cutting, there is no need to clean the tunnel wall, which improves the tunnel excavation progress and work efficiency.

[0039] Specifically, the multiple cutter head assemblies 2 are sequentially designated as a first cutter head assembly 2.1, a second cutter head assembly 2.2, a third cutter head assembly 2.3, and a fourth cutter head assembly 2.4. The distance R from the first cutter head assembly 2.1, the second cutter head assembly 2.2, the third cutter head assembly 2.3, and the fourth cutter head assembly 2.4 to the rotation axis B gradually increases. (See [reference]). Figure 2 R1-R24 in the diagram show that each tool disc 4 corresponds to a circular motion trajectory 3;

[0040] The cutter heads 4 on the first cutter head assembly 2.1 and the third cutter head assembly 2.3 are both A-cutter heads 4.1, and the cutter heads 4 on the second cutter head assembly 2.2 and the fourth cutter head assembly 2.4 are both B-cutter heads 4.2. The circular motion trajectories 3 of the A-cutter heads 4.1 on the first cutter head assembly 2.1 and the B-cutter heads 4.2 on the second cutter head assembly 2.2 are sequentially adjacent and connected. See [reference needed]. Figure 2 The circular motion trajectories 3 of the A cutter head 4.1 on the third cutter head assembly 2.3 and the B cutter head 4.2 on the fourth cutter head assembly 2.4 are sequentially connected, see [reference]. Figure 2 R1-R6 and R13-R18.

[0041] As the distance R from the first cutter head assembly 2.1, the second cutter head assembly 2.2, the third cutter head assembly 2.3, and the fourth cutter head assembly 2.4 to the rotation axis B gradually increases, the circular motion trajectories 3 of cutter head A 4.1 on the first cutter head assembly 2.1 and cutter head B 4.2 on the second cutter head assembly 2.2 are sequentially connected adjacent to each other, and the circular motion trajectories 3 of cutter head A 4.1 on the third cutter head assembly 2.3 and cutter head B 4.2 on the fourth cutter head assembly 2.4 are sequentially connected adjacent to each other. The cutter heads 4 on different circular motion trajectories 3 can compensate for each other to achieve the effect of seamless cutting and grooving, and the annular cutting path produced after cutting leaves no residue.

[0042] It should be noted that the diagram shows four sets of cutter head assemblies, but in practice, the number can be different, greater or less than four sets, and the specific number is not fixed.

[0043] Example 2:

[0044] This embodiment is an optimization based on the above embodiment 1.

[0045] like Figure 3 As shown, in order to arrange more cutter heads 4 with different circular motion trajectories 3 and connect the trajectories with each other, a synchronous pulley is also included. Multiple cutter heads 4 are fixedly connected to both sides of the synchronous pulley. The cutter head 4 located outside the synchronous pulley is called the outer cutter head 4.3, and the cutter head 4 located inside the synchronous pulley is called the inner cutter head 4.4.

[0046] Example 3:

[0047] This utility model also provides a mechanism for cutting annular grooves, including a lead screw 5, a guide rod 6, a lead screw motor 7, a tool holder 8, and a cutting disc assembly for cutting annular grooves as described in Embodiment 1 or 2. The lower end of the rotating frame 1 is connected to the rotating drive mechanism 9, and the upper end of the rotating frame 1 is provided with a tool holder mounting frame 10. The two ends of the lead screw 5 are rotatably connected to the tool holder mounting frame 10, and the two ends of the guide rod 6 are fixedly connected to the tool holder mounting frame 10. The lead screw 5 and the guide rod 6 are arranged parallel to each other and both extend forward. The two ends of the tool holder 8 are respectively slidably engaged with the corresponding guide rod 6. A lead screw nut 28 is threaded onto the lead screw 5, and the lead screw nut 28 is fixedly connected to the tool holder 8. The lead screw motor 7 drives the lead screw 5 to rotate.

[0048] In this technical solution, the lower end of the rotating frame 1 is connected to the rotating drive mechanism 9, and the upper end of the rotating frame 1 is provided with a tool holder mounting frame 10. The circumferential rotation of the tool holder mounting frame 10 is achieved by driving the rotating frame 1 to rotate through the rotating drive mechanism 9. The two ends of the lead screw 5 are rotatably connected to the tool holder mounting frame 10, and the two ends of the guide rod 6 are fixedly connected to the tool holder mounting frame 10. The lead screw 5 and the guide rod 6 are arranged parallel to each other and both extend forward. The two ends of the tool holder 8 are slidably engaged with the corresponding guide rod 6. A lead screw nut 28 is threaded onto the lead screw 5 and is fixedly connected to the tool holder 8. The lead screw motor 7 drives the lead screw 5 to rotate. In specific operation, the rotating drive mechanism 9 drives the rotating frame 1. While rotating circumferentially, the lead screw motor 7 drives the lead screw 5 to rotate. The lead screw 5 drives the cutter holder 8 to move along the guide rod 6 through the lead screw nut 28. During this process, the cutter holder 8 gradually moves forward, driving the cutter head assembly 2 to move forward step by step. The trajectory of the circumferential rotation of the rotating frame 1 determines the size of the tunnel. During the continuous circumferential rotation, the cutter head assembly 2 gradually moves towards the deeper soil layer, making the trajectory of the cutter head assembly 2 in the soil layer similar to a spiral propulsion method. The cutting depth continuously increases, thus enabling continuous circular trajectory grooving. There is no need for manual use of water-cooled drills to repeatedly cut small-sized soil. The entire grooving process is highly automated, efficient, and saves time and labor.

[0049] Example 4:

[0050] This embodiment is an optimization based on the above embodiment 3.

[0051] It also includes a cutter head drive assembly. The cutter holder 8 is provided with multiple hollow arms 11 extending forward. The multiple hollow arms 11 are distributed at intervals along the cutting trajectory. The cutter head assembly 2 is located at the front end of the hollow arms 11. The cutter head drive assembly includes a first synchronous pulley 12, a second synchronous pulley 13, a synchronous belt, and a cutter head motor 14. The synchronous belt passes through both ends of the hollow arms 11 and is connected to the first synchronous pulley 12 and the second synchronous pulley 13 respectively. The first synchronous pulley 12 is rotatably connected to the free end of the hollow arm 11. The cutter head assembly 2 is coaxially fixed on the first synchronous pulley 12. The cutter head motor 14 is located on the cutter holder 8 and drives the second synchronous pulley 13 to rotate.

[0052] The hollow arm 11 facilitates the installation of the cutter head assembly 2. At the same time, the synchronous pulley drive allows the cutter head motor 14 to be installed in a position away from the cutter head assembly 2, so as to facilitate subsequent use and maintenance without affecting the drive of the cutter head assembly 2.

[0053] Example 5:

[0054] This embodiment is an optimization based on the above embodiment 4.

[0055] A water-cooling pipe 15 is provided on the tool holder 8 near the hollow arm 11. The water-cooling pipe 15 is connected to an external water source and is used to cool the tool disc assembly 2. A suction pipe 16 is provided on the tool holder 8 and is connected to an external suction device to discharge the material generated in the annular cutting groove 29.

[0056] Example 6:

[0057] This embodiment is an optimization based on the above embodiment 5.

[0058] The rotary drive mechanism 9 includes a fixed disk 17, a first rotary joint 18 is provided in the middle of the fixed disk 17, a second rotary joint 19 is provided inside the first rotary joint 18, the first rotary joint 18 is connected to the water cooling pipe 15 through a pipe, and the second rotary joint 19 is connected to the suction pipe 16 through a pipe.

[0059] The first rotary joint 18 allows the water cooling pipe 15 to move in conjunction with the rotating frame 1 without affecting the operation of the water circuit. The second rotary joint 19 allows the suction pipe 16 to move in conjunction with the rotating frame 1 without affecting the suction operation.

[0060] Example 7:

[0061] This embodiment is an optimization based on the above embodiment 6.

[0062] The rotary drive mechanism 9 includes a rotary motor 20, an outer ring 21, an internal gear ring 22, and a gear 23. The rotary motor 20 is located on the outside of the fixed disk 17. The outer ring 21 is coaxially fixed on the inside of the fixed disk 17. The internal gear ring 22 is coaxially located inside the outer ring 21 and the two are rotatably engaged. The internal gear ring 22 is fixedly connected to the lower end of the rotating frame 1. The gear 23 meshes with the internal gear ring 22. The rotary motor 20 drives the gear 23 to rotate.

[0063] The rotary motor 20 drives the gear 23 to rotate, the gear 23 drives the internal gear ring 22 to rotate, and the internal gear ring 22 drives the rotating frame 1 to rotate, which can provide the rotating frame 1 with continuous and stable rotational power.

[0064] Example 8:

[0065] This embodiment is an optimization based on the above embodiment 5.

[0066] To improve the overall structural stability of the tool holder 8, it is an arc-shaped tool holder and also includes an arc-shaped connecting plate 24. The arc-shaped connecting plate 24 has the same curvature as the arc-shaped tool holder 8. The multiple hollow arms 11, water cooling pipes 15, and suction pipes 16 are all fixedly connected to the arc-shaped connecting plate 24 near their free ends. The arc-shaped connecting plate 24 also serves to cooperate with the cutting groove to form a more enclosed space, which is more conducive to suction and material discharge.

[0067] To facilitate the installation of the rotating frame 1 and improve the overall structural stability of the rotating frame 1, the rotating frame 1 includes a bottom connecting frame 1.1 and a side support frame 1.2. The bottom connecting frame 1.1 is connected to the rotating drive mechanism 9. The side support frames 1.2 are symmetrically arranged on both sides between the bottom connecting frame 1.1 and the tool holder mounting frame 10. A connecting frame 1.3 is provided between the side support frames 1.2.

[0068] Example 9:

[0069] This embodiment is an optimization based on the above embodiment 4.

[0070] To facilitate the installation of the cutter head and improve its cutting effect, a cutter head mounting seat 25 is provided at the end of the hollow arm 11. The first synchronous wheel 12 is located inside the cutter head mounting seat 25. The two ends of the first synchronous wheel 12 have connecting shafts 26. Multiple cutter discs 4 are fixedly mounted on the connecting shafts 26 in layers. Multiple blades 27 are evenly arranged circumferentially on the cutter discs 4. Specifically, three cutter discs 4 are respectively provided on the connecting shafts 26.

[0071] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A cutter head assembly for cutting annular grooves, characterized in that: It includes a rotating frame and multiple cutter head assemblies. The rotating frame drives the multiple cutter head assemblies to move along a circular trajectory. Each cutter head assembly includes multiple cutter heads arranged coaxially. The rotation axis A of the cutter head is perpendicular to the rotation axis B of the rotating frame. The radius of the circular motion trajectory of any cutter head is different. The circular motion trajectory paths of all cutter heads are interconnected to achieve a cutting path without residue.

2. The cutter head assembly for cutting annular grooves according to claim 1, characterized in that: It also includes a timing pulley, on both sides of which multiple cutter discs are fixedly connected. The cutter disc located outside the timing pulley is the outer cutter disc, and the cutter disc located inside the timing pulley is the inner cutter disc.

3. A mechanism for cutting annular grooves, characterized in that: The assembly includes a lead screw, a guide rod, a lead screw motor, a tool holder, and a cutting disc assembly for cutting an annular groove as described in claim 1 or 2. The lower end of the rotating frame is connected to a rotary drive mechanism, and the upper end of the rotating frame is provided with a tool holder mounting frame. The two ends of the lead screw are rotatably connected to the tool holder mounting frame, and the two ends of the guide rod are fixedly connected to the tool holder mounting frame. The lead screw and the guide rod are arranged parallel to each other and both extend forward. The two ends of the tool holder are respectively slidably engaged with the corresponding guide rods. A lead screw nut is threaded onto the lead screw, and the lead screw nut is fixedly connected to the tool holder. The lead screw motor drives the lead screw to rotate.

4. The annular cutting groove cutting mechanism according to claim 3, characterized in that: It also includes a cutter head drive assembly. The cutter holder has multiple hollow arms extending forward, which are spaced apart along the cutting trajectory. The cutter head assembly is located at the front end of the hollow arms. The cutter head drive assembly includes a first synchronous pulley, a second synchronous pulley, a synchronous belt, and a cutter head motor. The synchronous belt passes through both ends of the hollow arms and is connected to the first and second synchronous pulleys respectively. The first synchronous pulley is rotatably connected to the free end of the hollow arm. The cutter head assembly is coaxially fixed on the first synchronous pulley. The cutter head motor is located on the cutter holder and drives the second synchronous pulley to rotate.

5. The annular cutting groove cutting mechanism according to claim 4, characterized in that: A water-cooling pipe is provided on the tool holder near the hollow arm. The water-cooling pipe is connected to an external water source to cool the tool disc assembly. A suction pipe is provided on the tool holder and is connected to an external suction device to discharge the material generated in the cutting groove.

6. The annular cutting groove cutting mechanism according to claim 5, characterized in that: The rotary drive mechanism includes a fixed disk, a first rotary joint is provided in the middle of the fixed disk, a second rotary joint is provided inside the first rotary joint, the first rotary joint is connected to a water cooling pipe, and the second rotary joint is connected to a suction pipe.

7. The annular cutting groove cutting mechanism according to claim 6, characterized in that: The rotary drive mechanism includes a rotary motor, an outer ring, an internal gear ring, and a gear. The rotary motor is located on the outside of the fixed disk. The outer ring is coaxially fixed on the inside of the fixed disk. The internal gear ring is coaxially located inside the outer ring and the two rotate in cooperation. The internal gear ring is fixedly connected to the lower end of the rotating frame. The gear meshes with the internal gear ring. The rotary motor drives the gear to rotate.

8. The annular cutting groove cutting mechanism according to claim 5, characterized in that: The tool holder is an arc-shaped tool holder and also includes an arc-shaped connecting plate. The arc-shaped connecting plate has the same curvature as the arc-shaped tool holder. Multiple hollow arms, water-cooling pipes and suction pipes are fixedly connected to the arc-shaped connecting plate near their free ends.

9. A cutting mechanism for annular grooves according to claim 4, characterized in that: The hollow arm is provided with a cutter head mounting seat at its end. The first synchronous wheel is located inside the cutter head mounting seat. The two ends of the first synchronous wheel have connecting shafts. Multiple cutter discs are fixedly mounted on the connecting shafts in layers. Multiple blades are evenly arranged circumferentially on the cutter discs.

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