A numerical control cutting blade for batch head machining

Abstract

The application discloses a numerical control cutting blade for batch head machining and relates to the technical field of numerical control cutting blades.The numerical control cutting blade comprises a cutter body, an installation arm outwardly extended from the front end of the cutter body, a fixed seat, the fixed seat being similar in shape to the installation arm, the fixed seat being fixedly connected to one end of the cutter head through a screw rod and being symmetrically arranged with the installation arm, and a cutter head, the cutter head being in a rhombic shape, a connecting hole being formed in the middle position of the cutter head and being used for installation of the fixed seat and the installation arm, four evenly distributed limiting holes being formed in the inside of the connecting hole and being used for limiting the orientation of the cutter head.The single motor double-path synchronous transmission is used to realize synchronous release and locking of external V-shaped clamping slots and internal limiting blocks in radial limiting, the structure is simplified, time sequence dislocation is avoided, stable locking force is provided to prevent radial movement, and the steering assembly is flexibly reset by means of an electric telescopic rod and a spring rope, automatic switching is realized without disassembly, downtime is significantly shortened, and processing continuity and efficiency are improved.

Description

Technical Field

[0001] This invention relates to the field of CNC cutting inserts, specifically a CNC cutting insert for bit machining. Background Technology

[0002] As an indispensable connecting and transmission component in power and hand tools, the machining quality of screwdriver bits directly affects the overall performance and service life of the tool. Screwdriver bits are key functional components of CNC metal cutting equipment in the intelligent manufacturing equipment industry, and automatic tool changing actuators are crucial. Metal turning is one of the core processes in screwdriver bit manufacturing, demanding extremely high machining accuracy and surface quality. As the final actuator directly acting on the workpiece in turning, the performance of the cutting insert determines cutting efficiency and product qualification rate. During the deep machining of screwdriver bit cutting inserts, due to the high hardness of the bit material and the harsh cutting environment, the inserts are prone to wear.

[0003] Referring to Chinese invention patent, publication number CN 223876103 U, entitled "A CNC cutting tool with quick-change inserts," the invention comprises a CNC cutting tool body, a CNC cutting tool head, and an assembly assembly. The assembly assembly includes an assembly head, a fastening frame, a limiting block, a mating part, an opening and closing part, a fixing cover, a fixing part, and two auxiliary fasteners. The CNC cutting tool head is fastened to the fastening frame via the mating part. The operating fixing cover rotates through the opening and closing part to cover the mating part and the CNC cutting tool head. Subsequently, the operating fixing part passes through the fixing cover to fix the CNC cutting tool head. The two auxiliary fasteners of the operating fixing cover are connected to the assembly head, increasing the fixing force area of ​​the CNC cutting tool head. This solves the problem that existing CNC cutting tools used in machining only fix the end of the CNC cutting tool head with screws, and the cutting tool is subjected to force at the front end during cutting, which may lead to uneven force on the cutting tool, resulting in loosening and affecting the cutting effect.

[0004] However, some problems still exist in actual use:

[0005] Existing technologies often employ tool head designs with multiple cutting edges, such as rhombus shapes, to extend the lifespan of individual inserts by changing the working end. However, existing multi-blade cutting insert changing methods rely on manual machine stoppage for disassembly and reassembly, which is cumbersome and time-consuming, severely disrupting the continuity of deep machining and production cycle. Even with mechanical steering, it is difficult to synchronize and coordinate external clamping and internal radial locking, causing the tool head to easily loosen or move radially under high-load cutting, failing to meet the dual requirements of stability and efficiency for high-precision deep machining of tool bits. Summary of the Invention

[0006] Technical problems to be solved

[0007] The purpose of this invention is to overcome the shortcomings of existing bit machining cutting inserts, such as cumbersome turning operation requiring manual disassembly and assembly, difficulty in synchronizing internal and external locking, and instability of the bit under high-load cutting.

[0008] Technical solution

[0009] To achieve the above objectives, the present invention provides the following technical solution: a CNC cutting insert for machining bit prongs, comprising:

[0010] The blade body has a mounting arm extending outward from its front end;

[0011] The fixing seat is similar in shape to the mounting arm, and the fixing seat is fixedly connected to one end of the blade body by a screw and is symmetrically arranged with the mounting arm;

[0012] The cutter head is rhomboid in shape, and a connecting hole is provided in the middle of the cutter head for mounting with the fixing base and the mounting arm. Four evenly distributed limiting holes are provided inside the connecting hole to limit the orientation of the cutter head.

[0013] A locking assembly is located inside the connecting hole, and the upper and lower connections of the locking assembly are movably connected to the opposite sides of the mounting arm and the fixing seat, respectively, for locking and unlocking the cutter head;

[0014] A limiting component is connected to a locking component via a transmission connection, and the limiting component is fixedly connected to the outside of the mounting arm. It is used to limit the cutting head and simultaneously control the operation of the locking component.

[0015] A steering assembly is fixedly connected to the outside of the mounting arm and is inserted into the cutter head for adjusting the cutter head to switch working ends.

[0016] Furthermore, the locking component includes:

[0017] A positioning barrel, wherein the positioning barrel is adapted to the connecting hole and the positioning barrel is inserted into the connecting hole;

[0018] A control lever, the outer side of which is threaded;

[0019] The control block is frustum-shaped and is movably connected to the outside of the positioning barrel by a thread;

[0020] The positioning barrel has four evenly distributed through slots on its outer side, and each through slot corresponds to a limiting hole and overlaps with each other. The top of the positioning barrel is fixedly connected to the inner side of the mounting arm, and the top of the control rod passes through the mounting arm and extends to its outer side.

[0021] Furthermore, the fixed base is fixedly connected to the opposite side of the mounting arm with a socket, and the socket has a hole at the top center. The socket is inserted into the inside of the positioning barrel, and the bottom of the control rod is rotatably connected to the inside of the hole.

[0022] Furthermore, the locking component also includes:

[0023] Four limiting blocks, which are arc-shaped and respectively inserted into the inner side of the limiting hole and the through groove, are used to limit the installation state of the cutter head;

[0024] Four cables are fixedly connected to the inner side of the limiting block and are used to drive the limiting block.

[0025] A connecting ring is movably connected to the bottom of the control block via a bearing, and the other end of a cable is fixedly connected to the outside of the connecting ring. This is used to pull the limiting block out of the limiting hole by sliding the control block on the outside of the control rod, thereby releasing the cutter head from the limiting position.

[0026] Furthermore, the limiting component includes:

[0027] Two limiting strips, each with a V-shaped groove at one end for engaging and limiting one end of the cutter head;

[0028] A transmission rod, the outer side of which is threaded for transmission connection with the limiting strip;

[0029] The two limiting strips are respectively connected to the outside of the transmission rod by threads. One end of the transmission rod is movably connected to the fixed seat through a plug-in bearing, and the other end of the transmission rod passes through the mounting arm and extends to its outside.

[0030] Furthermore, the limiting component also includes:

[0031] A control motor is fixedly connected to the outside of the mounting arm;

[0032] A drive gear is fixedly connected to the output end of a control motor via a coupling, and the other side of the drive gear's shaft is fixedly connected to a transmission rod.

[0033] The transmission gear is connected to the drive gear via a transmission belt. The transmission gear is fixedly connected to one end of the control rod and is used to control the motor to drive the limit bar to release or limit it, while simultaneously manipulating the limit block to release and limit the cutter head.

[0034] Furthermore, the steering component includes:

[0035] An electric telescopic rod is fixedly connected to one side of the blade body, and the output end of the electric telescopic rod extends to the outside of the mounting arm;

[0036] A control rope is fixedly connected to the output end of the electric telescopic pole, and one end of the control rope near the electric telescopic pole is movably connected to the outside of the mounting arm via a buckle.

[0037] An elastic rope is fixedly connected to the other end of the control rope, and the other end of the elastic rope is fixedly connected to one end of the blade body. It is used to reset after the control rope is pulled. The end of the elastic rope near the control rope is movably connected to the outside of the mounting arm through a buckle.

[0038] Furthermore, a plug is fixedly connected at the connection between the elastic rope and the control rope. A control hole is provided on the surface of the cutter head, and the control hole is adapted to the plug. The plug is inserted into the control hole and is used to pull the control rope to rotate the cutter head when the cutter head is released from the limit state.

[0039] Compared with the prior art, this CNC cutting insert for bit machining has the following advantages:

[0040] I. This invention utilizes a locking assembly to rotate a control lever, causing a frustum-shaped control block to move up and down along the thread. When the control block moves upward, the connecting ring at the bottom and the cable smoothly pull the four limit blocks back into the through slot from the limit holes, achieving rapid unlocking. When it moves downward, the outer inclined surface of the frustum-shaped block directly pushes the limit blocks outward, precisely pressing them into the limit holes of the cutting head to complete the locking. This not only makes the switching between internal radial locking and unlocking smooth and reliable, but also provides a stable mechanical locking force, effectively preventing radial movement of the cutting head during high-speed cutting and ensuring extreme stability during the machining process.

[0041] II. This invention cleverly utilizes a single control motor as a power source through a set limiting component. The drive gear and transmission belt work together to achieve dual-path synchronous transmission. One path drives the transmission rod to move the external limiting strip in opposite directions, while the other path drives the transmission rod to control the operation of the internal locking component. This achieves the synchronous release and locking of the external V-shaped slot clamping limit and the internal radial limit of the limiting block. This not only simplifies the power structure and control logic of the equipment, avoiding the timing misalignment risk that can easily occur with multi-power source operation, but also improves the automation level and execution efficiency of the cutting tool changing operation. It reduces the need for manual downtime for cutting tool assembly and disassembly, improves the continuous operation capability of CNC machining equipment and the automation level of cutting tool changing, and is suitable for intelligent manufacturing processing scenarios with high-frequency cutting and high stability requirements, such as bit machining.

[0042] Third, this invention utilizes a steering component that employs an electric telescopic rod to retract and pull a control rope. This, along with a rod inserted into an eccentric control hole, drags the cutter head around its axis. The diamond-shaped cutter head's structural characteristics allow for a precise 90-degree rotation to complete the working end switch. After the turn, the elastic rope automatically retracts, causing the rod to reset. This eliminates the cumbersome process of manually stopping the machine to disassemble and reassemble the traditional cutting blade, enabling automatic switching between the worn end and the spare end without disassembly. This significantly reduces downtime for tool changes, improves the continuity and production efficiency of bit processing, and the flexible reset design of the elastic rope enhances the adaptability and stability of the traction mechanism.

[0043] Other advantages, objectives and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be learned from the practice of the invention. Attached Figure Description

[0044] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0045] Figure 2 This is a top-view three-dimensional structural diagram of the present invention;

[0046] Figure 3 This is a schematic diagram of the cutter head structure of the present invention;

[0047] Figure 4 This is a schematic diagram of the fixing base and mounting arm structure of the present invention;

[0048] Figure 5 This is a schematic diagram of the locking component connector structure of the present invention;

[0049] Figure 6 This is a schematic diagram of a partial cross-sectional connection structure of the cutter head of the present invention;

[0050] Figure 7 This is a schematic diagram of the connection structure between the locking component and the limiting component of the present invention;

[0051] Figure 8 For the present invention Figure 6 Enlarged connection structure diagram at point A.

[0052] In the diagram: 1. Blade body; 2. Fixing base; 3. Mounting arm; 4. Blade head; 5. Connecting hole; 6. Limiting hole; 7. Locking assembly; 701. Positioning barrel; 702. Control rod; 703. Control block; 704. Through groove; 705. Limiting block; 706. Cable; 707. Connecting ring; 8. Limiting assembly; 801. Limiting strip; 802. Transmission rod; 803. Control motor; 804. Drive gear; 805. Transmission gear; 9. Steering assembly; 901. Electric telescopic rod; 902. Control rope; 903. Elastic rope; 904. Insert rod; 10. Socket. Detailed Implementation

[0053] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0054] like Figure 1-8 As shown, the present invention provides a technical solution: a CNC cutting insert for machining bit tools, comprising:

[0055] The blade body 1 has a mounting arm 3 extending outward from its front end;

[0056] The fixed base 2 is similar in shape to the mounting arm 3, and the fixed base 2 is fixedly connected to one end of the cutter body 1 by a screw and is symmetrically arranged with the mounting arm 3.

[0057] The cutter head 4 is rhomboid in shape. A connecting hole 5 is provided in the middle of the cutter head 4 for installation with the fixing base 2 and the mounting arm 3. Four evenly distributed limiting holes 6 are provided inside the connecting hole 5 to limit the orientation of the cutter head 4.

[0058] Locking component 7 is located inside the connecting hole 5, and the upper and lower connections of locking component 7 are movably connected to the opposite sides of mounting arm 3 and fixed base 2, respectively, for locking and unlocking the cutter head 4;

[0059] Limiting component 8 is connected to locking component 7 via a transmission, and the limiting component 8 is fixedly connected to the outside of mounting arm 3. It is used to limit the cutting head 4 and simultaneously control the operation of locking component 7.

[0060] The steering assembly 9 is fixedly connected to the outside of the mounting arm 3 and is inserted into the cutter head 4 for adjusting the working end of the cutter head 4.

[0061] like Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the locking assembly 7 includes a positioning barrel 701, which is adapted to the connecting hole 5 and inserted into the interior of the connecting hole 5, providing a precise and stable internal support base for the radial locking of the cutter head 4. The outer side of the positioning barrel 701 has four evenly distributed through slots 704, each corresponding to a limiting hole 6 and overlapping with each other. This overlapping alignment design ensures that subsequent locking components can smoothly pass through and accurately embed.

[0062] The fixed base 2 and the mounting arm 3 are fixedly connected to the socket 10 on opposite sides. The socket 10 is inserted into the inside of the positioning barrel 701, and the bottom of the control rod 702 is rotatably connected to the socket 10 at the center of the top. This structure with two ends supporting the control rod 702 can maintain extremely high coaxiality and operational stability when rotating.

[0063] The control lever 702 has a thread on its outer side, and its top end passes through the mounting arm 3 and extends to its outer side to receive external power. When the control lever 702 rotates, it drives the frustum-shaped control block 703, which is movably connected to the outer side by the thread, to move axially. When it is necessary to release the limit of the cutter head 4, the control block 703 moves upward along the thread, and the connecting ring 707, which is movably connected to the bottom by the bearing, rises smoothly and pulls up the four cables 706 fixedly connected to its outer side. The cables 706 are fixedly connected to the inner side of the four arc-shaped limit blocks 705, thereby smoothly pulling the limit blocks 705 back from the limit hole 6 into the through groove 704, effectively avoiding jamming.

[0064] When locking is required, the control lever 702 reverses and drives the control block 703 to move downward. At this time, the outer inclined surface of the frustum-shaped control block 703 directly pushes the limit block 705 outward through the through groove 704, so that it is precisely pressed into the limit hole 6. The mechanical principle of the inclined surface pushing provides a strong radial mechanical locking force, ensuring that the cutter head 4 will not move radially under high-speed cutting conditions, thus achieving positioning accuracy and structural stability.

[0065] like Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, the limiting assembly 8 includes a control motor 803 fixedly connected to the outside of the mounting arm 3, serving as the power source for the entire synchronous linkage control. This provides efficient and concentrated driving force for the limiting and unlocking of the cutter head 4. The output end of the control motor 803 is fixedly connected to a drive gear 804 via a coupling. The other side of the drive gear 804's shaft is fixedly connected to a transmission rod 802. One end of the transmission rod 802 is movably connected to the fixed seat 2 via a plug-in bearing, and the other end passes through the mounting arm 3. This two-end support structure ensures the coaxiality and smooth operation of the transmission rod 802 during rotation. The transmission rod 802 has threads on its outer side, and two limiting strips 801 are respectively connected to the outer side of the transmission rod 802 through threads. When the control motor 803 drives the transmission rod 802 to rotate forward and backward, the two limiting strips 801 move towards or away from each other along the rod body through thread transmission. When moving towards each other, the V-shaped groove at one end of the limiting strip 801 precisely engages with the end of the cutter head 4, forming an extremely firm external clamping limit, which effectively prevents the cutter head 4 from axially moving during high-speed cutting. When moving away from each other, it quickly disengages and releases the clamp, making room for the rotation of the cutter head 4. The operation is smooth and reliable.

[0066] The drive gear 804 is simultaneously connected to the transmission gear 805, which is fixedly connected to one end of the control rod 702, via a transmission belt. The linkage design of this gear and transmission belt allows the control motor 803 to simultaneously control the control rod 702 of the locking component 7 to rotate while driving the limit bar 801 to release or perform external limiting. This, in turn, drives the limit block 705 to simultaneously release or perform internal radial limiting on the cutter head 4, achieving a completely synchronous response between external clamping and internal locking. This not only simplifies the power structure and control logic of the equipment but also completely avoids the timing misalignment and interference risks that are easily caused by multi-power source operation, improving the automation level and overall execution efficiency of the cutter turning process.

[0067] like Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 8 As shown, the steering assembly 9 includes an electric telescopic rod 901 fixedly connected to one side of the cutter body 1, which serves as the main power source for rotating and changing the cutter head 4. Its output end extends to the outside of the mounting arm 3 and is fixedly connected to a control rope 902. One end of the control rope 902 near the electric telescopic rod 901 is movably connected to the outside of the mounting arm 3 through a buckle for guidance.

[0068] When the cutter head 4 is released from the limit state, the electric telescopic rod 901 is activated to retract and pull the control rope 902. Since the connection between the control rope 902 and the elastic rope 903 is fixedly connected to the insertion rod 904, and the insertion rod 904 is inserted into the control hole that matches the surface of the cutter head 4, the pulling force directly drags the cutter head 4 to rotate around the axis following the trajectory of the control rope 902. Since the cutter head 4 is rhomboid, the pulling force makes it rotate exactly 90 degrees to switch the unworn end to the working position, realizing the automatic switching between the worn end and the spare end without disassembly. This completely eliminates the tedious process of traditional manual machine stoppage disassembly and tool replacement, shortens downtime, and improves the continuity and production efficiency of the bit processing.

[0069] During the process of rotating the cutter head 4 by pulling the control rope 902, the elastic rope 903, which is fixedly connected to the other end of the control rope 902, is stretched and stores force. The other end of the elastic rope 903 is fixedly connected to one end of the cutter body 1 and the end near the control rope 902 is movably connected to the outside of the mounting arm 3 through a buckle. When the position lock is completed or the electric telescopic rod 901 extends and resets to release the control rope 902, the insertion rod 904 adaptively resets with the position of the cutter head 4 under the contraction pull of the elastic rope 903. This not only makes the process of rotating the cutter head 4 smooth and stable, but also enhances the adaptability and structural stability of the traction mechanism, ensuring the reliable operation of the CNC cutting insert in long-term continuous machining.

[0070] Working principle: When one end of the cutter head 4 is worn and the working end needs to be changed, the control motor 803 is started, and its output end drives the drive gear 804 to rotate, producing two synchronous actions.

[0071] On one hand, the drive gear 804 drives the transmission rod 802 to rotate, and through the threaded transmission, the two limit bars 801 move in opposite directions along the transmission rod 802, and the V-shaped groove disengages from both ends of the cutter head 4, releasing the external clamping limit;

[0072] On the other hand, the drive gear 804 drives the transmission gear 805 to rotate synchronously through the transmission belt, which drives the control rod 702 to rotate. The rotation of the control rod 702 drives the frustum-shaped control block 703 to move upward along the thread. The control block 703 pulls the cable 706 upward through the connecting ring 707 at the bottom, pulling the four limit blocks 705 back from the limit hole 6 of the cutter head 4 into the through groove 704 of the positioning barrel 701, completely releasing the radial rotation limit on the cutter head 4, so that it is in a free rotation state.

[0073] After the cutter head 4 is completely unlocked, the electric telescopic rod 901 is activated to retract, and the control rope 902 is pulled. Since the insertion rod 904 is inserted into the control hole of the cutter head 4, the tension of the control rope 902 pulls the cutter head 4 to rotate around the axis of the connecting hole 5. Because the cutter head 4 is rhomboid and the control hole is eccentrically set, the tension makes it rotate exactly 90 degrees, and the unworn end is transferred to the lower working position. During this process, the elastic rope 903 is stretched and stores energy.

[0074] After the position change is completed, the control motor 803 reverses, and the transmission rod 802 reverses to drive the two limit bars 801 to move towards each other, and the V-shaped groove re-clamps the two ends of the cutter head 4;

[0075] At the same time, the control lever 702 reverses and drives the frustum-shaped control block 703 to move downward. When the control block 703 moves downward, its outer inclined surface directly pushes the limit block 705 out of the through groove 704, so that it is accurately pressed back into the limit hole 6 of the cutter head 4, completing the radial locking. The entire process of the cutter head 4 turning and relocking is over, and the cutter head 4 can continue to perform cutting.

[0076] When it is necessary to replace the initial cutter head 4, repeat the above operation, and finally the electric telescopic rod 901 extends and resets to release the control rope 902. The insertion rod 904 adaptively resets with the position of the cutter head 4 under the contraction pull of the elastic rope 903.

[0077] It should be noted that in this document, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "fixed," "installed," "connected," and "linked" should be interpreted broadly. For example, "installed" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a mechanical connection or an electrical connection; "linked" can be a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0078] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A CNC cutting insert for machining bitheads, characterized in that, include: The blade body (1) has an outwardly extending mounting arm (3) at its front end. The fixed seat (2) is similar in shape to the mounting arm (3), and the fixed seat (2) is fixedly connected to one end of the blade body (1) by a screw and is symmetrically arranged with the mounting arm (3); The cutter head (4) is rhomboid in shape. A connecting hole (5) is provided in the middle of the cutter head (4) for installation with the fixing base (2) and the mounting arm (3). Four evenly distributed limiting holes (6) are provided inside the connecting hole (5) to limit the orientation of the cutter head (4). Locking component (7), the locking component (7) is located inside the connecting hole (5), and the upper and lower connections of the locking component (7) are respectively movably connected to the opposite sides of the mounting arm (3) and the fixing seat (2), for locking and unlocking the cutter head (4); Limiting component (8), which is connected to locking component (7) in a transmission manner, and the limiting component (8) is fixedly connected to the outside of mounting arm (3) for limiting the cutter head (4) and simultaneously controlling the operation of locking component (7); Steering assembly (9) is fixedly connected to the outside of mounting arm (3) and is inserted into the cutter head (4) for adjusting the cutter head (4) to switch working ends.

2. The CNC cutting insert for machining bit according to claim 1, characterized in that, The locking component (7) includes: Positioning barrel (701), which is adapted to the connecting hole (5), and the positioning barrel (701) is inserted into the connecting hole (5); A control lever (702) has threads on its outer side; The control block (703) is frustum-shaped and is movably connected to the outside of the positioning barrel (701) by a thread; The positioning barrel (701) has four evenly distributed through slots (704) on its outer side, and each through slot (704) corresponds to a limiting hole (6) and overlaps with each other. The top of the positioning barrel (701) is fixedly connected to the inner side of the mounting arm (3), and the top of the control rod (702) passes through the mounting arm (3) and extends to its outer side.

3. The CNC cutting insert for machining bit according to claim 1, characterized in that, The fixed base (2) and the mounting arm (3) are fixedly connected to a socket (10) on opposite sides, and the socket (10) has a socket hole at the top center. The socket (10) is inserted into the positioning barrel (701), and the bottom of the control rod (702) is rotatably connected to the inside of the socket hole.

4. The CNC cutting insert for machining bit according to claim 2, characterized in that, The locking component (7) further includes: Four limiting blocks (705) are arc-shaped and respectively inserted into the inner side of the limiting hole (6) and the through groove (704) to limit the installation state of the cutter head (4); Four cables (706) are fixedly connected to the inner side of the limiting block (705) respectively, and are used to drive the limiting block (705); The connecting ring (707) is movably connected to the bottom of the control block (703) via a bearing, and the other end of the cable (706) is fixedly connected to the outside of the connecting ring (707). The connecting ring (707) is used to slide the control block (703) on the outside of the control rod (702) to pull the limiting block (705) out of the limiting hole (6) and release the limiting of the cutter head (4).

5. A CNC cutting insert for machining bit according to claim 1, characterized in that, The limiting component (8) includes: Two limiting strips (801), one end of each of the two limiting strips (801) is provided with a V-shaped groove for locking and limiting one end of the cutter head (4); The transmission rod (802) has a thread on its outer side for transmission connection with the limiting strip (801); Among them, the two limiting strips (801) are respectively connected to the outside of the transmission rod (802) by thread. One end of the transmission rod (802) is movably connected to the fixed seat (2) by a plug-in bearing, and the other end of the transmission rod (802) passes through the mounting arm (3) and extends to its outside.

6. A CNC cutting insert for machining bit according to claim 5, characterized in that, The limiting component (8) also includes: A control motor (803) is fixedly connected to the outside of the mounting arm (3); A drive gear (804) is fixedly connected to the output end of a control motor (803) via a coupling, and the other side of the shaft of the drive gear (804) is fixedly connected to a transmission rod (802). The transmission gear (805) is connected to the drive gear (804) via a transmission belt. The transmission gear (805) is fixedly connected to one end of the control rod (702) and is used to control the motor (803) to drive the limit bar (801) to release or limit while simultaneously controlling the limit block (705) to release and limit the cutter head (4).

7. A CNC cutting insert for machining bit according to claim 1, characterized in that, The steering component (9) includes: An electric telescopic rod (901) is fixedly connected to one side of the blade body (1), and the output end of the electric telescopic rod (901) extends to the outside of the mounting arm (3). Control rope (902), the control rope (902) is fixedly connected to the output end of the electric telescopic rod (901), and the end of the control rope (902) near the electric telescopic rod (901) is movably connected to the outside of the mounting arm (3) by a buckle; Elastic rope (903), the elastic rope (903) is fixedly connected to the other end of the control rope (902), and the other end of the elastic rope (903) is fixedly connected to one end of the blade body (1), used to reset after the control rope (902) is pulled. The end of the elastic rope (903) near the control rope (902) is movably connected to the outside of the mounting arm (3) through a buckle.

8. A CNC cutting insert for machining bit according to claim 7, characterized in that, A rod (904) is fixedly connected to the connection between the elastic rope (903) and the control rope (902). A control hole is provided on the surface of the cutter head (4), and the control hole is adapted to the rod (904). The rod (904) is inserted into the control hole and is used to pull the control rope to rotate the cutter head (4) when the cutter head (4) is released from the limit state by the electric telescopic rod (901).

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