Laminated material state sensing cutter handle, cutter comprising cutter handle and milling machine

Abstract

The invention relates to the field of cutter processing, provides a laminated material state sensing cutter handle, a cutter comprising the cutter handle and a milling machine, and aims to solve the problem of low processing quality of materials at the junction in the processing process of laminated materials, the laminated material state sensing cutter handle comprises a cutter handle main body, a circuit board, an electric conductor and an insulator; a conductor and a collet are arranged in the lower end of the cutter handle body, the collet is used for connecting a cutter to insulate the cutter from the cutter handle body, and an insulator is arranged around the conductor to enable the cutter to be only communicated with the conductor. A circuit board is arranged on the outer side of the knife handle body. A power line led out of the circuit board is connected to the knife handle body, and the other power line is connected to the electric conductor. When a composite material is machined, the cutter does not give an alarm, when the cutter makes contact with a metal part, the circuit board detects a conduction signal, machining parameters are adjusted through a feedback signal, and therefore the machining process is optimized.

Description

Technical Field

[0001] The present invention relates to the field of tool machining, and more particularly to a laminated material state sensing tool holder, a tool including the tool holder, and a milling machine. Background Art

[0002] The statements herein only provide background art related to the present invention and do not necessarily constitute prior art.

[0003] Laminated materials composed of composites and metals such as titanium alloys are important components of aviation parts. In cutting machining, they play a very important role in the machining quality, stability, and safety of laminated materials. However, the machining parameters required for composite materials and titanium alloy workpieces, such as rotational speed and feed, are different. When traditional tool holders machine laminated materials, they usually measure the thickness of composite material workpieces and the thickness of metal workpieces such as titanium alloys in advance, and conservatively estimate the machining parameters based on the measurement, or use the same machining parameters for different materials, resulting in difficult-to-guarantee machining quality at the junction of the composite material and titanium alloy laminates of the workpiece, and at the same time, the machining efficiency is not high. Specifically, reference can be made to the existing patents CNCN109108317A, CN109226803A, etc. In Patent CN112404478A, a self - adaptive drilling device and method for a composite material / metal material laminated structure are disclosed. It includes a machine tool, on which a tool holder is fixedly installed, and a drill bit is clamped on the tool holder. The drill bit drills other materials, composite materials, and metal materials. The metal material is connected to a resistance detection device through a wire. The machine tool, tool holder, drill bit, other materials, composite materials, metal material, and resistance detection device are connected by conducting wires to form a resistance measurement circuit. The resistance detection device is connected to a controller through a wire, and the controller is connected to the PLC processor of the machine tool through a wire. When the drill bit drills in the composite material, since the composite material is a fiber - reinforced or particle - reinforced composite material with low electrical conductivity, the resistance value in the entire resistance measurement circuit is extremely large. When the controller receives the resistance value signal with an extremely large resistance value transmitted by the resistance detection device, it identifies that the drill bit has not reached the interface of the composite material / metal material laminated structure, and the processing process parameters remain unchanged. When the drill bit drills at the interface of the composite material / metal material laminated structure, since the drill bit has come into contact with the metal material, and the metal material is a titanium alloy, stainless steel, or aluminum alloy material with high electrical conductivity, the resistance value in the entire resistance measurement circuit is extremely small. When the controller receives the resistance value signal with an extremely small resistance value transmitted by the resistance detection device, it identifies that the drill bit has reached the interface of the composite material / metal material laminated structure, and the controller sends the preset processing process parameters to the PLC processor of the machine tool. However, this patent requires adding other materials above and below the composite material and metal workpiece to isolate the direct connection between the workpiece and the machine tool. Limited by the volume and other installation restrictions of other materials, and wires need to be led out from the workpiece and the machine tool, so the assembly and installation are difficult. It is restricted for airtight processing with high requirements for the processing environment or high - precision machine tools that are difficult to lead wires. Summary of the Invention

[0004] In view of the above - mentioned technical problems, the purpose of the present invention is to provide a laminated material state - sensing tool holder, a tool including this tool holder, and a milling machine, which can effectively alleviate the problem of low interface quality during the laminated processing, reduce the surface roughness of the processing, improve the surface quality of the processing, and at the same time improve the processing efficiency.

[0005] To achieve the above purpose, the present invention provides a laminated material state - sensing tool holder, a tool including this tool holder, and a milling machine, specifically as follows: In the first aspect, the present invention provides a laminated material state - sensing tool holder, including a tool holder body, a circuit board, a conductor, and an insulator; Inside the lower end of the tool holder body, a conductor and a collet are arranged. The collet is used to connect the tool, making the tool insulated from the tool holder body. An insulator is arranged around the conductor, so that the tool can only be connected to the conductor; A circuit board is arranged on the outside of the knife handle body; a power line is led out of the circuit board and connected to the knife handle body, and another power line is connected to the conductor.

[0006] As a further technical solution, the outer ring of the circuit board is sealed by a shell to prevent cutting fluid from entering the interior.

[0007] As a further technical solution, the shell includes an upper shell and a lower shell. The upper shell is a ring-mounted shell with an annular boss on one side, which cooperates with the annular groove of the lower shell for positioning. The contact surface between the upper shell and the tool handle has a sealing groove, which cooperates with the first sealing ring to prevent the upper cutting fluid from entering the interior; the lower shell is an annular shell with a sealing groove at the upper end, which cooperates with the second sealing ring to prevent the cutting fluid on both sides from entering the interior; there are several bolt holes on both sides of the lower shell, which is fixed to the upper shell by bolts.

[0008] As a further technical solution, there is an annular circuit insulator inside the lower shell, with several bolt holes on both sides of the circuit insulator, which is fixed to the lower shell by bolts. There is an annular circuit board on the upper side of the circuit insulator, and the circuit board is pressed onto the insulating board by the lower shell bolts.

[0009] As a further technical solution, the surface of the collet in contact with the tool handle body is coated with insulating paint.

[0010] As a further technical solution, the collet comprises a non-insulating collet and an inverted cone-shaped ceramic sheet bonded to the outer side of the non-insulating collet.

[0011] As a further technical solution, the handle body includes an upper handle body and a lower handle body, the upper handle body and the lower handle body are connected by a ceramic connector to achieve insulation between the upper handle body and the lower handle body, and the collet and the conductor are arranged in the lower handle body.

[0012] As a further technical solution, the circuit board includes a conductive sensing module, a signal processing module, a control circuit module, a feedback control module, and a wireless communication module; the conductive sensing module, the signal processing module, the control circuit module, and the feedback control module are connected in sequence, and the feedback control module adjusts the control circuit module instructions to adjust the processing parameters, and sends them to the control system of the machine tool through the wireless communication module, and the control system of the machine tool changes the drilling parameters of the tool.

[0013] In a second aspect, the present invention further provides a tool, which includes the aforementioned laminated material state sensing tool handle, and the tail of the tool is pressed against the conductor.

[0014] In a third aspect, the present invention further provides a milling machine on which the above-mentioned tool is installed.

[0015] Beneficial effects of the present invention: The present invention concentrates the laminated material detection device on the tool handle, avoiding the modification of the machine tool or other components. It is easy to use for some machine tools that are difficult to modify, does not require leads, is less affected by the workpiece, and is easier to install than ordinary processing machine tools.

[0016] The present invention uses the circuit conduction alarm principle as the tool handle processing feedback signal, which can improve the quality of the processing interface of the laminated material. At the same time, the feedback structure is simple and the feedback time is short, which can improve the accuracy of the feedback signal and ensure that the machine tool can modify the processing parameters in time to improve the processing efficiency. Specifically, the collet is used to clamp the tool. During assembly, the tool is pressed against the conductor to form a connection, and the tool handle body is connected to the machine tool to form a conductive state; the metal layer of the workpiece is connected to the machine tool to form a conductive state; the circuit board leads out a power line connected to the tool handle body, and another power line is led out to the conductor; in this way, the disconnection point of the entire circuit is at the contact position between the tool and the workpiece; when the tool processes the metal layer, the metal layer is connected through the tool, the conductor, the tool handle body and the machine tool itself to form a conductive circuit. At this time, the circuit board is turned on and started, and a signal is sent out to send a signal to the acquisition card or the machine tool to change the drilling parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings in the specification, which constitute a part of the present application, are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute a limitation on the present application.

[0018] Figure 1 This is a schematic cross-sectional structure diagram of a first insulation method of a shank of the present invention; Figure 2 This is a schematic cross-sectional structure diagram of a second insulation method of a shank of the present invention; Figure 3 This is a schematic cross-sectional structure diagram of a second insulation method of a shank of the present invention; Figure 4 It is a schematic diagram of the signal feedback process of the present invention; Figure 5 A schematic diagram of a module of a circuit board of the present invention; In the figure: 1. Tool handle body; 2. Circuit board insulator; 3. Lower shell; 4. Bolt; 5. Upper shell; 6. First sealing ring; 7. Second sealing ring; 8. Circuit board; 9. Conductor insulator; 10. Conductor; 11. Collet; 12. Ceramic sheet; 13. Ceramic connector; 14. Insulating material layer; 15. Metal layer; 16. Machine tool; DETAILED DESCRIPTION The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0019] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0020] Example 1 This embodiment provides a laminated material state sensing handle, specifically a circuit conduction alarm handle with collet insulation, including a handle body, a circuit board, a conductor and an insulator; a conductor and a collet are arranged inside the lower end of the handle body, the collet is used to connect the tool, so that the tool is insulated from the handle body, and an insulator is arranged around the conductor, so that the tool can only be connected to the conductor; a circuit board is arranged on the outside of the handle body; a power line is connected to the handle body from the circuit board, and another power line is connected to the conductor, aiming to solve the problem of low processing quality of materials at the junction during the processing of laminated materials, reduce the roughness of the processing surface, and improve the processing efficiency. When the handle tool is processing composite metal laminated materials, the tool does not alarm when processing composite materials. When the tool contacts the metal parts, the circuit board detects the conduction signal and adjusts the processing parameters through the feedback signal, thereby optimizing the processing process. The design has a simple structure and rapid feedback, and can accurately start the alarm system, ensure real-time adjustment during the processing process, improve the processing efficiency and ensure the processing quality. This embodiment concentrates the laminated material detection device on the tool handle to avoid modification of the machine tool or other components. It is easy to use for some machine tools that are difficult to modify, does not require leads, is less affected by the workpiece, and is easier to install than ordinary processing machine tools.

[0021] Specifically, the present embodiment is described below with reference to the accompanying drawings: like Figure 1As shown, the laminated material state sensing knife handle disclosed in this embodiment comprises a knife handle body 1, a circuit board 8, a conductor 10, a conductor insulator 9 and a collet 11; the knife handle body 1 is an integral structure, and two cross-shaped cross holes are provided in the middle of the knife handle body 1, and a conducting hole is provided in the middle of the cross holes to connect the conductor 10, and the conductor 10 is insulated from the knife handle body 1, and the conductor 10 is connected to the tool installed in the collet 11; at the same time, a circuit board 8 is provided on the outside of the knife handle body 1; a power line is led out of the circuit board 8 and connected to the knife handle body 1, and another power line is connected to the conductor 10; More specifically, the conductor 10 is a cylindrical copper block or other easily conductive material, and is surrounded by a cylindrical conductor insulator 9 . The conductor insulator 9 has a concave cylindrical groove in the middle, which is just right for placing the conductor 10 .

[0022] The upper end of the handle body 1 is a common handle joint, and the collet 11 at the lower end of the handle body 1 is an insulating collet 11. Specifically, the surface of the collet 11 has an insulating paint similar to the surface of the enameled wire, and together with the cylindrical conductive insulator 9, an insulating space is formed; so that the tool cannot directly contact the handle body 1, and the insulation between the tool, the conductive body 10 and the handle body 1 is achieved; the tool can only be connected to the conductive body 10; the conductive body 10 can only be connected to the circuit board 8 through the wire; Furthermore, in order to protect the circuit board 8 and prevent the cutting fluid from entering the circuit board 8, in the present embodiment, the outer side of the tool handle body 1 is fitted with an upper shell 5 and a lower shell 3 through interference fit, etc. The upper shell 5 is an annular shell with an annular boss on one side, which is positioned in cooperation with the annular groove of the lower shell 3. The contact surface between the upper shell 5 and the tool handle has a sealing groove, which cooperates with the first sealing ring 6 to prevent the upper cutting fluid from entering the interior. The lower shell 3 is also an annular shell with a sealing groove at the upper end, which is used in cooperation with the second sealing ring 7 to prevent the cutting fluid from both sides from entering the interior. There are several bolt holes on both sides of the lower shell 3, which are fixed to the upper shell 5 by bolts 4.

[0023] Furthermore, there is an annular circuit board insulator 2 inside the lower shell 3, and multiple bolt holes are provided on both sides of the insulating plate, which is fixed to the upper shell 5 by bolts 4. There is an annular circuit board 8 on the upper side of the circuit board insulator 2, and the circuit board 8 is pressed onto the circuit board insulator 2 by the bolts 4 on the lower shell to fix the circuit board 8.

[0024] Furthermore, the circuit board 8 in this embodiment includes a conductive sensing module, a signal processing module, a control circuit module, a feedback control module, a wireless communication module and a power management module; when the tool processes the metal layer 15, the conductive sensing module receives the signal and then transmits it to the signal processing module. The signal processing module processes and amplifies the current signal and sends it to the control circuit module. The control circuit module performs logical judgment and controls the issuance of feedback signals and sends them to the feedback control module. The feedback control module adjusts the control circuit module instructions to adjust the processing parameters and sends them to the control system of the machine tool 16 through the wireless communication module. The control system of the machine tool 16 changes the drilling parameters of the tool.

[0025] Furthermore, the conductive sensing module in this embodiment may adopt an existing current detection module.

[0026] The specific working principle is as follows: The collet 11 is used to clamp the tool. When assembling, the tool is pushed against the conductor 10 to form a connection. The tool handle body 1 is connected to the machine tool 16 to form a conductive state; the metal layer of the workpiece is connected to the machine tool 16 to form a conductive state; the circuit board 8 leads a power line to the tool handle body 1, and another power line is connected to the conductor 10 through a cross channel; in this way, the disconnection point of the entire circuit is at the contact position between the tool and the workpiece; the workpiece in this embodiment is as shown in FIG. Figure 4 As shown, it includes an insulating material layer 14 and a metal layer 15; when the tool processes the metal layer 15, the metal layer 15 is connected to form a conductive circuit through the tool, the conductor 10, the tool holder body 1 and the machine tool itself. At this time, the circuit board 8 is turned on and started, sending a signal to the control system of the machine tool 16, and the control system of the machine tool 16 changes the drilling parameters.

[0027] This embodiment uses the circuit conduction alarm principle as the tool handle processing feedback signal, which can improve the quality of the laminated material processing interface. At the same time, the feedback structure is simple and the feedback time is short, which can improve the accuracy of the feedback signal and ensure that the machine tool 16 can modify the processing parameters in time to improve the processing efficiency.

[0028] Example 2 This embodiment provides another laminated material state sensing tool handle, such as Figure 2As shown, it has a handle body 1, an upper shell 5, a lower shell 3, a circuit board 8, a conductor 10, a conductor insulator 9 and a ceramic sheet 12; the difference from Example 1 is that the specific design of the collet 11 is different. In this embodiment, the collet 11 is an ordinary handle collet (non-insulated collet), and an inverted cone-shaped ceramic sheet 12 that fits the outer side of the ordinary handle collet is installed on the outer side of the collet 11. The inverted cone-shaped ceramic sheet 12 prevents the collet 11, the tool and the handle body 1 from being directly conductive, forming an insulating space, so that the tool can only be connected to the conductor 10. Specifically, the collet 11 is used to clamp the tool. During assembly, the tool is pushed onto the conductor 10 to form a connection. The handle body 1 is connected to the machine tool 16 to form a conductive state; the metal layer of the workpiece is connected to the machine tool 16 to form a conductive state; the circuit board 8 leads out a power line connected to the handle body 1, and another power line is led out to the conductor 10 through a cross channel; in this way, the disconnection point of the entire circuit is at the contact position between the tool and the workpiece; the workpiece in this embodiment is as shown Figure 4 As shown, it includes an insulating material layer 14 and a metal layer 15; when the tool processes the metal layer 15, the metal layer 15 is connected through the tool, the conductor 10, the tool handle body 1 and the machine tool itself to form a conductive circuit. At this time, the circuit board 8 is turned on and started, sending a signal outward to send a signal to the acquisition card or the machine tool 16 to change the drilling parameters.

[0029] This embodiment uses the circuit conduction alarm principle as the tool handle processing feedback signal, which can improve the quality of the laminated material processing interface. At the same time, the feedback structure is simple and the feedback time is short, which can improve the accuracy of the feedback signal and ensure that the machine tool 16 can modify the processing parameters in time to improve the processing efficiency.

[0030] The remaining structures are the same as those in Example 1 and will not be described in detail here.

[0031] Example 3 This embodiment provides a laminated material state sensing tool handle, such as Figure 3 As shown, the knife handle body 1, the upper shell 5, the lower shell 3, the circuit board 8, the conductor 10, and the ceramic connector 13 are provided. The difference between the knife handle body 1 and the embodiment 1 and the embodiment 2 is that the design of the conductor insulator 9 is different. In this embodiment, the conductor insulator 9 in the embodiment 1 is replaced by the ceramic connector 13, and the design of the knife handle body 1 is also different, as follows: In this embodiment, the handle body 1 is divided into two parts, namely an upper handle body 1 and a lower handle body 1, wherein the upper handle body 1 and the lower handle body 1 are welded and fixed together by a ceramic connector 13, wherein a collet 11 is installed in the lower handle body 1, through holes are provided in the ceramic connector 13 and the upper handle body 1, a conductor 10 is provided in the through hole, and the collet 11 is installed in the lower handle; the ceramic connector 13 prevents the tool in the collet 11 from being directly conductive with the upper handle body 1, thereby forming an insulating space; in this embodiment, the ceramic connector 13 is concave-convexly matched with the lower handle, and the ceramic connector 13 is concave-convexly matched with the upper handle, thereby facilitating the connection between the three.

[0032] Furthermore, the conductor 10 is a cylindrical copper block or other easily conductive material, and is surrounded by a ceramic connector 13. The ceramic connector 13 has a concave cylindrical groove in the middle, which is just right for placing the conductor 10, thereby achieving insulation between the conductor 10 and the handle body 1, so that the conductor 10 can only be connected to the circuit board 8.

[0033] Furthermore, the upper shank body 1 is an ordinary shank joint, and the collet 11 inside the lower shank body 1 is an insulating collet 11. The collet 11 can adopt the collet 11 disclosed in Example 1, that is, the surface of the collet 11 has an insulating paint similar to the surface of the enameled wire; the collet 11 disclosed in Example 2 can also be adopted, that is, the collet 11 is an ordinary non-insulating shank collet 11, and an inverted cone-shaped ceramic sheet 12 that fits the outer side of the ordinary shank collet 11 is installed on the outside. The inverted cone-shaped ceramic sheet 12 prevents the collet 11 and the shank body 1 from being directly conductive, thereby forming an insulating space.

[0034] During assembly, the tool is pushed against the conductor 10 to form a connection, the tool handle body 1 is connected to the machine tool 16 to form a conductive state; the metal layer of the workpiece is connected to the machine tool 16 to form a conductive state; the circuit board 8 leads a power line to the tool handle body 1, and another power line is connected to the conductor 10 through a cross channel; in this way, the disconnection point of the entire circuit is at the contact position between the tool and the workpiece; the workpiece in this embodiment is as shown in FIG. Figure 4 As shown, it includes an insulating material layer 14 and a metal layer 15; when the tool processes the metal layer 15, the metal layer 15 is connected through the tool, the conductor 10, the tool handle body 1 and the machine tool itself to form a conductive circuit. At this time, the circuit board 8 is turned on and started, sending a signal outward to send a signal to the acquisition card or the machine tool 16 to change the drilling parameters.

[0035] This embodiment uses the circuit conduction alarm principle as the tool handle processing feedback signal. When the tool contacts the metal layer, the circuit is conducted, and the drilling parameters are changed at this time. In this way, the feedback structure is simple, the feedback time is short, and the accuracy of the feedback signal can be improved. At the same time, it can ensure that the machine tool 16 can modify the processing parameters in time to improve the processing efficiency. This embodiment concentrates the laminated material detection device on the tool handle to avoid the modification of the machine tool or other components. It is easy to use for some machine tools that are difficult to modify, and does not require leads, is less affected by the workpiece, and is easier to install than ordinary processing machine tools.

[0036] The remaining structures are the same as those in Example 1 and will not be described in detail here.

[0037] Example 4 The present embodiment discloses a tool, which is mounted on the laminated material state sensing tool handle described in any one of the embodiments 1 to 3. The tool is mounted in the collet 11. When assembled, the tool is pushed against the conductor 10 to form a connection. The tool handle body 1 is connected to the machine tool 16 to form a conductive state; the metal layer 15 of the workpiece is connected to the machine tool 16 to form a conductive state; the circuit board 8 leads out a power line connected to the tool handle body 1, and leads out another power line to the conductor 10 through a cross channel; in this way, the disconnection point of the entire circuit is at the contact position between the tool and the workpiece; the workpiece in the present embodiment is as shown in FIG. Figure 4 As shown, it includes an insulating material layer 14 and a metal layer 15; when the tool processes the metal layer 15, the metal layer 15 is connected to form a conductive loop through the tool, the conductor 10, the tool handle body 1 and the machine tool itself. At this time, the circuit board 8 is turned on and started, and sends a signal to the acquisition card or the machine tool 16 to change the drilling parameters. This method can improve the quality of the processing interface of the laminated material. At the same time, the feedback structure is simple and the feedback time is short, which can improve the accuracy of the feedback signal. At the same time, it can ensure that the machine tool can modify the processing parameters in time and improve the processing efficiency. This embodiment concentrates the detection device of the laminated material on the tool handle to avoid the modification of the machine tool or other components. It is easy to use for some machine tools that are difficult to modify, and does not require leads. It is less affected by the workpiece and is easier to install than ordinary processing machine tools.

[0038] Example 5 The present embodiment discloses a milling machine, on which a laminated material state sensing tool handle as described in any one of the embodiments 1 to 3 is provided, and a tool is installed on the tool handle; during assembly, the tool corresponding to the milling machine is pushed onto the conductor 10 to form a connection, and the tool handle body 1 is connected to the milling machine to form a conductive state; the metal layer 15 of the workpiece is connected to the milling machine to form a conductive state; a power line is led out from the circuit board 8 and connected to the tool handle body 1, and another power line is led out and connected to the conductor 10 through a cross channel; in this way, the disconnection point of the entire circuit is at the contact position between the tool and the workpiece; the workpiece in this embodiment is as shown in FIG. Figure 4As shown, it includes an insulating material layer 14 and a metal layer 15; when the tool processes the metal layer 15, the metal layer 15 is connected to form a conductive loop through the tool, the conductor 10, the tool handle body 1 and the milling machine itself. At this time, the circuit board 8 is turned on and started, sending a signal to the outside to send a signal to the acquisition card or the milling machine to change the drilling parameters; this method can improve the quality of the processing interface of the laminated material, and at the same time, the feedback structure is simple and the feedback time is short, which can improve the accuracy of the feedback signal, and at the same time can ensure that the machine tool can modify the processing parameters in time to improve the processing efficiency; this embodiment concentrates the laminated material detection device on the tool handle to avoid the modification of the machine tool or other components. It is easy to use for some machine tools that are difficult to modify, and does not require leads. It is less affected by the workpiece and is also easy to install relative to ordinary processing machine tools.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. 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.

Claims

1. A laminated material state sensing tool handle, characterized in that: It includes a handle body, a circuit board, a conductor and an insulator; A conductor and a collet are arranged inside the lower end of the handle body, the collet is used to connect the tool so that the tool is insulated from the handle body, and an insulator is arranged around the conductor so that the tool can only be connected to the conductor; A circuit board is arranged on the outer side of the handle body; A power line is led out from the circuit board and connected to the knife handle body, and another power line is connected to the conductor.

2. The laminated material state sensing knife handle according to claim 1, characterized in that: The outer ring of the circuit board is sealed by the housing to prevent cutting fluid from entering the interior.

3. The laminated material state sensing knife handle according to claim 2, characterized in that: The shell comprises an upper shell and a lower shell. The upper shell is a ring-mounted shell with an annular boss on one side, which cooperates with the annular groove of the lower shell for positioning. The contact surface between the upper shell and the tool handle has a sealing groove, which cooperates with the first sealing ring to prevent the upper cutting fluid from entering the interior; the lower shell is an annular shell with a sealing groove at the upper end, which cooperates with the second sealing ring to prevent the cutting fluid on both sides from entering the interior; the bolt holes on both sides of the lower shell are fixed to the upper shell by bolts.

4. The laminated material state sensing handle according to claim 3, characterized in that: There is an annular circuit insulator inside the lower shell, and there are several bolt holes on both sides of the circuit insulator, which is fixed to the lower shell by bolts. There is an annular circuit board on the upper side of the circuit insulator, and the circuit board is pressed on the insulating board by the lower shell bolts.

5. The laminated material state sensing knife handle according to claim 1, characterized in that: The surface of the collet that contacts the knife handle body is coated with insulating paint.

6. The laminated material state sensing knife handle according to claim 1, characterized in that: The collet comprises a non-insulating collet and an inverted cone-shaped ceramic sheet which is attached to the outer side of the non-insulating collet.

7. The laminated material state sensing knife handle according to claim 1, characterized in that: The handle body comprises an upper handle body and a lower handle body, which are connected via a ceramic connector to achieve insulation between the upper handle body and the lower handle body, and the collet and the conductor are arranged in the lower handle body.

8. The laminated material state sensing knife handle according to claim 1, characterized in that: The circuit board includes a conductive sensing module, a signal processing module, a control circuit module, a feedback control module, and a wireless communication module; the conductive sensing module, the signal processing module, the control circuit module, and the feedback control module are connected in sequence, the feedback control module adjusts the control circuit module instructions to adjust the processing parameters, and sends them to the control system of the machine tool through the wireless communication module, and the control system of the machine tool changes the drilling parameters of the tool.

9. A cutting tool, characterized in that: The tool is installed on the laminated material state sensing tool handle as described in any one of claims 1 to 8, and the tail of the tool is pressed against the conductor.

10. A milling machine, characterized in that: The cutting tool according to claim 9 is mounted thereon.

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