A carbide cutter head

Abstract

The present invention belongs to the technical field of numerical control processing equipment, and specifically relates to a cemented carbide tool head, comprising a tool seat and a tool head, wherein the tool head penetrates the tool seat and is slidably sealed and connected to the penetration position, a cylindrical cavity coaxial with the tool head is provided in the tool seat, four liquid inlets are provided in a ring shape at the top of the cavity, and four liquid outlets are provided in a ring shape at the bottom of the cavity, the liquid inlets and the liquid outlets are respectively connected through liquid pipes embedded in the tool seat, and liquid capsule chambers are provided on each of the liquid pipelines, and liquid capsules are provided in each of the liquid capsule chambers, and valves are provided on the liquid inlet, the liquid outlet and both ends of the liquid capsule, and the tool head is protected by filling the cavity with shear thickening liquid, so that the protected part of the tool head is not easy to break, and even if it breaks accidentally, the broken part is prevented from flying out, which also increases safety to a certain extent and reduces potential accidents, and at the same time, the circulation of the liquid is driven by the circulation of the gas, and the structure is simple and the operation is convenient.

Description

Technical Field

[0001] The invention belongs to the technical field of numerical control processing equipment, and specifically relates to a cemented carbide tool head. Background Art

[0002] CNC machine tool is the abbreviation of digital control machine tool, which is an automated machine tool equipped with a program control system. The control system can logically process programs specified by control codes or other symbolic instructions, decode them, express them in coded numbers, and input them into the CNC device through information carriers. After calculation and processing, the CNC device sends various control signals to control the movement of the machine tool and automatically process the parts according to the shape and size required by the drawing.

[0003] CNC machine tools have better solved the problems of complex, precise, small-batch, and multi-variety parts processing. They are flexible, high-efficiency automated machine tools, represent the development direction of modern machine tool control technology, and are a typical mechatronics product.

[0004] Due to human factors or program design, CNC machine tools often collide with tools during actual production and processing. The collision is caused by operating errors or other reasons. The tool hits the workpiece or other objects. Once a collision occurs, the tool may break and fall out. The broken tool may fly out and cause secondary injuries, posing a huge threat to the personal safety of operators and the economic property of production companies. Summary of the invention

[0005] The purpose of the present invention is to provide a cemented carbide tool head. The specific problem to be solved by the present invention is that existing CNC machine tools often collide with tools due to various reasons. Broken tools may fly out and cause secondary injuries, posing a huge threat to the personal safety of operators and the economic property of production enterprises.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A cemented carbide tool head, comprising a tool seat and a tool head, wherein the tool head penetrates the tool seat and is slidably sealed with the penetration position, a cylindrical cavity coaxial with the tool head is provided in the tool seat, four liquid inlets are provided in an annular manner at the top of the cavity, and four liquid outlets are provided in an annular manner at the bottom of the cavity, the liquid inlets and the liquid outlets are respectively connected through liquid pipes embedded in the tool seat, each of the liquid pipes is provided with a liquid capsule chamber, each of the liquid capsule chambers is provided with a liquid capsule, and the liquid capsule is used to store a shear thickening liquid, and the liquid inlet, the liquid outlet and both ends of the liquid capsule are A valve is provided. During normal use of the cutter head, the opening and closing of each valve is controlled to fill the cavity with shear thickening liquid to wrap the entire internal structure of the cavity. The shear thickening liquid is a typical non-Newtonian fluid. When the cutter head is subjected to a sudden increase in radial force, the viscosity of the shear thickening liquid will increase instantly, thereby bringing great resistance and even appearing in a form similar to that of a solid, thereby protecting the cutter head and making the protected part of the cutter head not easy to break. Even if it breaks accidentally, the broken part is prevented from flying out, thereby increasing safety to a certain extent and reducing potential accidents.

[0008] Preferably, an arched support rib is embedded in the liquid sac, and the support rib is in a state of being close to the liquid sac chamber when no force is applied, that is, the liquid sac can be expanded when the support rib is not applied. The sum of the volumes of the liquid sac chamber and the pipeline from the liquid sac to the liquid outlet is greater than one quarter of the volume of the cavity, so as to ensure that the shear thickening liquid in the entire liquid circulation system can fill the entire cavity when the liquid sac is compressed, thereby ensuring better protection for the cutter head.

[0009] Preferably, the liquid capsule is made of a flexible rubber material, and the supporting ribs are made of a spring steel material, and the cooperation of the two enables the contraction and expansion of the liquid capsule to be more thorough, thereby improving the conveying efficiency of the shear thickening liquid.

[0010] Preferably, a locking mechanism is provided in the cavity, and the locking mechanism includes an arc plate, a guide column, a sealing plate and a clamping block. The locking mechanism has a total of four annularly arranged in the cavity, a portion of the guide column is embedded in the arc plate and both ends are slidably connected to the arc plate, an arc-shaped slide groove is provided at the relative position between the bottom and the top of the cavity, and sealing plates are provided at both ends of the slide groove and are respectively fixedly connected to the top and the bottom of the cavity, and the distance from the far end of the sealing plate to the side wall of the cavity is smaller than the distance from the side of the slide groove away from the side wall of the cavity to the side wall of the cavity, so that the far end of the sealing plate does not affect the movement of the arc plate, and the arc plate is slidably and sealedly connected to the slide groove and the side wall of the sealing plate up, down, left and right respectively, and the sealing plate, the arc-shaped slide groove and the sealing plate are respectively connected to the side wall of the cavity. The space surrounded by the plate and the side wall of the cavity constitutes an airtight chamber. The clamping blocks are fan-shaped and have a total of four and are arranged between the cutter head and the arc-shaped plate. The clamping blocks are provided with two circular holes that pass through the upper and lower parts so that the shear thickening liquid can flow up and down in the cavity. The clamping blocks can be matched into a hollow cylinder in the clamped state and can clamp the cylindrical part of the cutter head. The arc-shaped plate can match the curvature of the side of the clamping block. The clamping block has a notch on the side wall and can match with the guide column when clamping, thereby avoiding the relative sliding of the cutter head relative to the cutter seat. A layer of rubber sheet is fixedly connected to the arc-shaped surface where the clamping block contacts the cylindrical part of the cutter head to ensure that the clamping block can provide a greater clamping force.

[0011] Preferably, a gas pipeline is provided in the knife holder, and there are four gas pipelines in total, which cooperate with the locking mechanism and the liquid bag one by one. The gas pipeline connects the airtight chamber and the liquid bag chamber in series and leads to the bottom of the knife holder. The gas blown out of the pipeline can clean the waste and residue on the knife head. The gas pipeline is provided with an electrically controlled gas valve at the position where it enters the airtight chamber and passes through the liquid bag chamber, and the gas pipeline is installed with an electromagnetic overflow valve at the position where it passes through the airtight chamber.

[0012] When the cutter head needs to be replaced, open the electromagnetic overflow valve at the gas outlet position of the liquid capsule chamber and the electrically controlled gas valve at the gas outlet position of the airtight chamber, and at the same time open the valves at the liquid outlet of the cavity and the liquid inlet of the liquid capsule chamber. Due to the combined effect of the positive pressure in the gas system and the supporting force of the liquid capsule expansion, the high-pressure gas in the system is ejected outward, the clamping mechanism is unloaded, and the ejected high-pressure gas has a cleaning effect on the cutter head part. At the same time, due to the expansion of the liquid capsule, the shear thickening liquid in the cavity is sucked into the liquid capsule under the action of negative pressure. At this time, the cutter head can be manually pulled out and a new cutter can be inserted. Then, the electrically controlled gas valves at the gas outlet position of the liquid capsule chamber and the gas outlet position of the airtight chamber are closed, and the electrically controlled gas valve at the airtight chamber inlet position is opened. The gas is supplied to the airtight chamber through an external gas booster. The chamber is inflated, and the locking mechanism operates to gradually clamp the tool. During this process, the tool head needs to be slowly rotated manually to drive the clamping block to rotate, so that the guide column on the arc plate and the notch on the clamping block are matched and locked one by one. When the pressure in the airtight chamber reaches the set pressure of the electromagnetic overflow valve, the electromagnetic overflow valve automatically opens to introduce gas other than the pressure into the liquid capsule chamber, and at the same time opens the valves of the liquid outlet of the liquid capsule chamber and the liquid inlet of the cavity. The liquid capsule is tightened under the action of gas pressure, and the liquid is squeezed out and discharged into the cavity to fill the cavity, restarting the protection function, and then closing the gas and liquid valves to complete the tool change. Through this design, the circulation of gas can drive the circulation of liquid, which simplifies the structure while ensuring the protection effect.

[0013] Preferably, the set pressure of the electromagnetic overflow valve is greater than the gas pressure required for clamping of the locking mechanism, so as to ensure that the gas entering the gas system first makes the pressure of the airtight chamber reach the set value before entering the liquid capsule chamber, that is, to ensure that the shear thickening liquid is filled into the cavity after the locking mechanism clamps the tool.

[0014] Preferably, four circuit pipelines are opened in the tool holder for arranging the wires of each valve. The circuit pipelines are cylindrical and are distributed equidistantly in a ring shape relative to the axis of the tool head. A wire box is provided at the bottom of the circuit pipeline. When the tool needs to be changed, the tool holder stops rotating and the controller can be temporarily connected through the wire box to control each valve.

[0015] Preferably, the knife seat and the liquid capsule chamber are both formed by casting technology, and the knife seat is divided into several parts and cast separately, and then formed by welding technology after the internal pipelines, circuits, valves and mechanisms are installed.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. During normal use of the cutter head, by controlling the opening and closing of each valve, the cavity is filled with shear thickening liquid to wrap the entire internal structure of the cavity. The shear thickening liquid is a typical non-Newtonian fluid. When the cutter head is subjected to a sudden increase in radial force, the viscosity of the shear thickening liquid will increase instantly, which will bring great resistance and even appear in a form similar to that of a solid, thereby protecting the cutter head and making the protected part of the cutter head less likely to break. It also increases safety to a certain extent and reduces potential accidents.

[0018] 2. When the cutter head needs to be replaced, the gas pressure in the liquid capsule chamber is controlled to control the contraction or opening of the liquid capsule. The circulation of gas can drive the circulation of liquid. At the same time, the gas that completes a cycle can also be discharged to the bottom of the cutter seat through a pipe for cleaning the cutter head. While ensuring the protection effect of the cutter head, the structure is simplified and energy consumption is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 2 It is a schematic diagram of the curved plate structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the internal structure of the locking mechanism of the present invention in an open state;

[0022] Figure 4 It is a schematic diagram of the internal structure of the locking mechanism of the present invention in a clamped state.

[0023] In the figure: tool holder 1, tool head 2, cavity 11, arc plate 111, guide column 112, sealing plate 113, clamping block 114, rubber sheet 1141, slide groove 115, airtight chamber 116, liquid capsule chamber 12, liquid capsule 121, supporting rib 122, electronically controlled gas valve 13, electromagnetic overflow valve 14, circuit pipeline 15, and wire box 16. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] See also Figures 1 to 4In an embodiment of the present invention, a cemented carbide cutter head comprises a cutter seat 1 and a cutter head 2. The cutter head 2 penetrates the cutter seat 1 and is slidably sealed and connected to the penetration position. A cylindrical cavity 11 coaxial with the cutter head 2 is provided in the cutter seat 1. Four liquid inlets are provided in an annular manner at the top of the cavity 11. Four liquid outlets are provided in an annular manner at the bottom of the cavity 11. The liquid inlets and the liquid outlets are respectively connected through liquid pipes embedded in the cutter seat 1. Liquid capsule chambers 12 are provided on the liquid pipes. Liquid capsule chambers 12 are provided in the liquid capsule chambers 12. Liquid capsules 121 are used to store shear thickening liquid. The liquid inlets, liquid outlets and liquid capsules 12 are connected to each other. Valves are provided at both ends of 1. During normal use of the cutter head 2, by controlling the opening and closing of each valve, the cavity 11 is filled with a shear thickening liquid that wraps the entire internal structure of the cavity 11. The shear thickening liquid is a typical non-Newtonian fluid. When the cutter head 2 is subjected to a sudden increase in radial force, the viscosity of the shear thickening liquid will increase instantly, thereby bringing great resistance and even appearing in a form close to a solid, thereby protecting the cutter head 2, making the protected part of the cutter head 2 not easy to break. Even if it breaks accidentally, the broken part is prevented from flying out, which also increases safety to a certain extent and reduces potential accidents.

[0026] As an embodiment of the present invention, an arched support rib 122 is embedded in the liquid capsule 121. The support rib 122 is in close contact with the liquid capsule chamber 12 when no force is applied, that is, the liquid capsule 121 can be expanded when the support rib 122 is not applied. The sum of the volumes of the liquid capsule chamber 12 and the pipeline from the liquid capsule 121 to the liquid outlet is greater than one quarter of the volume of the cavity 11, so as to ensure that when the liquid capsule 121 is compressed, the shear thickening liquid in the entire liquid circulation system can fill the entire cavity 11, thereby ensuring that the cutter head 2 can be better protected.

[0027] As an embodiment of the present invention, the liquid capsule 121 is made of a flexible rubber material, and the support ribs 122 are made of a spring steel material, and the cooperation of the two enables the contraction and expansion of the liquid capsule 121 to be more thorough, thereby improving the conveying efficiency of the shear thickening liquid.

[0028] As an embodiment of the present invention, a locking mechanism is provided in the cavity 11, and the locking mechanism includes an arc plate 111, a guide column 112, a sealing plate 113 and a clamping block 114. There are four locking mechanisms arranged in a ring in the cavity 11. A portion of the guide column 112 is embedded in the arc plate 111 and both ends are rotatably connected to the arc plate 111. An arc-shaped slide groove 115 is provided at the relative position between the bottom and the top of the cavity 11. Sealing plates 113 are provided at both ends of the slide groove 115 and are respectively fixedly connected to the top and the bottom of the cavity 11. The distance from the far end of the sealing plate 113 to the side wall of the cavity 11 is less than the distance from the side of the slide groove 115 away from the side wall of the cavity 11 to the side wall of the cavity 11, so that the far end of the sealing plate 113 does not affect the movement of the arc plate 111, and the arc plate 111 is slidably and sealedly connected to the slide groove 115 and the side wall of the sealing plate 113 up, down, left and right respectively. Next, the space surrounded by the sealing plate 113, the arc plate 111 and the side wall of the cavity 11 constitutes an airtight chamber 116. There are four fan-shaped clamping blocks 114 and they are arranged between the cutter head 2 and the arc plate 111. The clamping block 114 has two circular holes that pass through the upper and lower parts so that the shear thickening liquid can flow up and down in the cavity 11. The clamping block 114 can be combined into a hollow cylinder when in a clamped state and can clamp the cylindrical part of the cutter head 2. The arc plate 111 can cooperate with the curvature of the side of the clamping block 114. The clamping block 114 has a notch on the side wall and can cooperate with the guide column 112 when clamping, thereby avoiding the relative sliding of the cutter head 2 relative to the cutter seat 1. A layer of rubber sheet 1141 is fixedly connected to the arc surface where the clamping block 114 contacts the cylindrical part of the cutter head 2 to ensure that the clamping block 114 can provide a greater clamping force.

[0029] As an embodiment of the present invention, a gas pipeline is provided in the tool holder 1. There are four gas pipelines in total, which cooperate with the locking mechanism and the liquid capsule 121 one by one. The gas pipeline connects the airtight chamber 116 and the liquid capsule chamber 12 in series and leads to the bottom of the tool holder 1. The gas blown out of the pipeline can clean the waste and residue on the tool head 2. The gas pipeline is provided with an electrically controlled gas valve 13 at the position where it enters the airtight chamber 116 and exits the liquid capsule chamber 12, and the gas pipeline is installed with an electromagnetic overflow valve 14 at the position where it exits the airtight chamber 116.

[0030] When the cutter head 2 needs to be replaced, the electromagnetic overflow valve 14 at the gas outlet position of the liquid capsule chamber 12 and the electrically controlled gas valve 13 at the gas outlet position of the airtight chamber 116 are opened, and at the same time, the valves at the liquid outlet of the cavity 11 and the liquid inlet of the liquid capsule chamber 12 are opened. Due to the combined effect of the positive pressure in the gas system and the supporting force of the expansion of the liquid capsule 121, the high-pressure gas in the system is ejected outward, the clamping mechanism is unloaded, and the ejected high-pressure gas has a cleaning effect on part of the cutter head 2. At the same time, because the liquid capsule 121 expands, the shear thickening liquid in the cavity 11 is sucked into the liquid capsule 121 under the action of negative pressure. At this time, the cutter head 2 can be manually pulled out and a new cutter can be inserted. Then, the electrically controlled gas valves 13 at the gas outlet position of the liquid capsule chamber 12 and the gas outlet position of the airtight chamber 116 are closed, and the electrically controlled gas valve 13 at the gas inlet position of the airtight chamber 116 is opened. The air in the airtight chamber 116 is inflated, and the locking mechanism operates to gradually clamp the tool. During this process, the tool head 2 needs to be rotated slowly manually to drive the clamping block 114 to rotate, so that the guide column 112 on the arc plate 111 and the notch on the clamping block 114 are matched and locked one by one. When the pressure in the airtight chamber 116 reaches the set pressure of the electromagnetic overflow valve 14, the electromagnetic overflow valve 14 automatically opens to introduce gas other than the pressure into the liquid capsule chamber 12, and at the same time opens the valves of the liquid outlet of the liquid capsule chamber 12 and the liquid inlet of the cavity 11. The liquid capsule 121 is tightened under the action of the gas pressure, and the liquid is squeezed out and discharged into the cavity 11 to fill the cavity 11, and the protection function is restarted. Then, the gas and liquid valves are closed to complete the tool change. Through this design, the circulation of gas can drive the circulation of liquid, which simplifies the structure while ensuring the protection effect.

[0031] As an embodiment of the present invention, the set pressure of the electromagnetic overflow valve 14 is greater than the gas pressure required for clamping of the locking mechanism, so as to ensure that the gas entering the gas system first makes the pressure of the airtight chamber 116 reach the set value before entering the liquid capsule chamber 12, that is, to ensure that the shear thickening liquid is filled into the cavity 11 after the locking mechanism clamps the tool.

[0032] As an embodiment of the present invention, four circuit pipelines are opened in the tool holder 1 for arranging the wires of each valve. The circuit pipeline 15 is cylindrical and is equidistantly distributed in a ring shape relative to the axis of the tool head 2. A wire box 16 is provided at the bottom of the circuit pipeline 15. When the tool needs to be changed, after the tool holder 2 stops rotating, the controller can be temporarily connected through the wire box 16 to control each valve.

[0033] As an embodiment of the present invention, the knife seat 1 and the liquid capsule chamber 12 are both cast using casting technology. The knife seat 1 is divided into several parts and cast separately. After the internal pipelines, circuits, valves and mechanisms are installed, they are formed using welding technology.

[0034] Working principle: During normal use of the cutter head 2, by controlling the opening and closing of each valve, the cavity 11 is filled with a shear thickening liquid that wraps the entire internal structure of the cavity 11. The shear thickening liquid is a typical non-Newtonian fluid. When the cutter head 2 is subjected to a sudden increase in radial force, the viscosity of the shear thickening liquid will increase instantly, thereby bringing great resistance and even appearing in a form similar to that of a solid, thereby protecting the cutter head 2, making the protected part of the cutter head 2 not easy to break, and also increasing safety to a certain extent and reducing potential accidents.

[0035] When the cutter head 2 needs to be replaced, the electromagnetic overflow valve 14 at the gas outlet position of the liquid capsule chamber 12 and the electrically controlled gas valve 13 at the gas outlet position of the airtight chamber 116 are opened, and the valves at the liquid outlet of the cavity 11 and the liquid inlet of the liquid capsule chamber 12 are opened at the same time. Due to the positive pressure in the gas system and the supporting force of the expansion of the liquid capsule 121, the high-pressure gas in the system is ejected outward, and the clamping mechanism is unloaded. The ejected high-pressure gas has a cleaning effect on the cutter head 2. At the same time, because the liquid capsule 121 expands, the shear thickening liquid in the cavity 11 is sucked into the liquid capsule 121 under the action of negative pressure. At this time, the cutter head 2 can be manually pulled out and a new cutter can be inserted. Then, the electrically controlled gas valves 13 at the gas outlet position of the liquid capsule chamber 12 and the gas outlet position of the airtight chamber 116 are closed, and the electrically controlled gas valves 13 at the gas inlet position of the airtight chamber 116 are opened. The gas valve 13 inflates the airtight chamber 116 through an external gas booster, and the locking mechanism operates to gradually clamp the tool. During this process, the tool head 2 needs to be slowly rotated manually to drive the clamping block 114 to rotate, so that the guide column 112 on the arc plate 111 and the notch on the clamping block 114 are matched and locked one by one. When the pressure in the airtight chamber 116 reaches the set pressure of the electromagnetic overflow valve 14, the electromagnetic overflow valve 14 automatically opens to introduce gas other than the pressure into the liquid capsule chamber 12, and at the same time opens the valves of the liquid outlet of the liquid capsule chamber 12 and the liquid inlet of the cavity 11. The liquid capsule 121 is tightened under the action of the gas pressure, and the liquid is squeezed out and discharged into the cavity 11 to fill the cavity 11, and the protection function is restarted. Then, the gas and liquid valves are closed to complete the tool changing process. The set pressure of the electromagnetic overflow valve 14 should be greater than the gas pressure required for the locking mechanism to clamp, so as to ensure that the gas entering the gas system first makes the pressure of the airtight chamber 116 reach the set value before entering the liquid capsule chamber 12, that is, to ensure that the shear thickening liquid is filled into the cavity 11 after the locking mechanism clamps the tool.

[0036] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not exist, the above embodiments only express several implementation methods of the present invention. The description is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, several variations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A cemented carbide tool head, comprising a tool holder (1) and a tool head (2), wherein the tool head (2) penetrates the tool holder (1) and is slidably and sealingly connected to the penetration position, characterized in that: A cylindrical cavity (11) coaxial with the cutter head (2) is provided in the knife seat (1), four liquid inlets are provided in an annular manner at the top of the cavity (11), and four liquid outlets are provided in an annular manner at the bottom of the cavity (11), the liquid inlets and the liquid outlets are respectively connected via liquid pipes embedded in the knife seat (1), and each of the liquid pipes is provided with a liquid capsule chamber (12), and each of the liquid capsule chambers (12) is provided with a liquid capsule (121), and valves are provided at the liquid inlet, the liquid outlet, and both ends of the liquid capsule (121); A locking mechanism is provided in the cavity (11), and the locking mechanism comprises an arc plate (111), a guide column (112), a sealing plate (113) and a clamping block (114). The locking mechanism has four members arranged in a ring shape in the cavity (11). A portion of the guide column (112) is embedded in the arc plate (111) and both ends are rotatably connected to the arc plate (111). An arc-shaped slide groove (115) is provided at a relative position between the bottom and the top of the cavity (11). Sealing plates (113) are provided at both ends of the slide groove (115) and are respectively fixedly connected to the top and the bottom of the cavity (11). The distance from the far end of the sealing plate (113) to the side wall of the cavity (11) is smaller than the distance from the side of the slide groove (115) away from the side wall of the cavity (11) to the side wall of the cavity (11). The arc plate (111) is respectively connected to the slide groove (115) at the top, bottom, left and right. The sealing plate (113) and the side wall of the cavity (11) are slidingly sealed and connected. The space enclosed by the sealing plate (113), the arc plate (111) and the side wall of the cavity (11) constitutes an airtight chamber (116). The clamping blocks (114) are fan-shaped and have a total of four and are arranged between the cutter head (2) and the arc plate (111). The clamping blocks (114) are provided with two circular holes extending through the upper and lower parts. The clamping blocks (114) can be matched to form a hollow cylinder in a clamped state and can clamp the cylindrical part of the cutter head (2). The arc plate (111) can match the curvature of the side of the clamping block (114). The clamping block (114) has a notch on the side wall and can match the guide column (112) when clamped. A layer of rubber sheet (1141) is fixedly connected to the arc surface of the clamping block (114) in contact with the cylindrical part of the cutter head (2).

2. A cemented carbide cutter head according to claim 1, characterized in that: An arched support rib (122) is embedded in the liquid capsule (121); the support rib (122) is in close contact with the liquid capsule chamber (12) when no force is applied; and the sum of the volumes of the liquid capsule chamber (12) and the pipeline from the liquid capsule (121) to the liquid outlet is greater than one quarter of the volume of the cavity (11).

3. A cemented carbide cutter head according to claim 2, characterized in that: The liquid bag (121) is made of a flexible rubber material, and the supporting rib (122) is made of a spring steel material.

4. A cemented carbide tool head according to claim 1, characterized in that: The knife seat (1) is provided with a gas pipeline, and there are four gas pipelines in total, which cooperate with the locking mechanism and the liquid capsule (121) one by one. The gas pipeline connects the airtight chamber (116) and the liquid capsule chamber (12) in series and leads to the bottom of the knife seat (1). The gas blown out of the pipeline can clean the waste and residue on the knife head (2). The gas pipeline is provided with an electric-controlled gas valve (13) at the position where it enters the airtight chamber (116) and passes through the liquid capsule chamber (12), and the gas pipeline is installed with an electromagnetic overflow valve (14) at the position where it passes through the airtight chamber (116).

5. A cemented carbide cutter head according to claim 4, characterized in that: The set pressure of the electromagnetic overflow valve (14) is greater than the gas pressure required for the locking mechanism to clamp.

6. The cemented carbide tool head according to claim 1, characterized in that: Four circuit pipes (15) are provided in the knife seat (1) for arranging the wires of each valve. The circuit pipes (15) are cylindrical and are distributed in a circular shape with equal distances relative to the axis of the knife head (2). A wire box (16) is provided at the bottom end of the circuit pipes.

7. The cemented carbide tool head according to claim 1, characterized in that: The knife seat (1) and the liquid capsule chamber (12) are both formed by casting technology. The knife seat (1) is divided into several parts and cast separately. After the internal pipelines, valves and mechanisms are installed, they are formed by welding technology.

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