Five-axis linkage numerical control knife sharpening machine tool

Abstract

The invention relates to the technical field of numerical control machine tools, in particular to a five-axis linkage numerical control knife sharpening machine tool which comprises a machine tool base, a main shaft is movably connected to the machine tool base, and a workbench is arranged below the main shaft. The bottom of the main shaft is movably connected with a rotary head, the bottom of the rotary head is rotationally connected with a cutter handle, the bottom of the cutter handle is fixedly connected with a cutter head and a threaded groove formed in the cutter head, and the bottom of the main shaft is further provided with a plurality of sets of high-pressure spray heads and swing spray heads. The shell is arranged at the bottom of the rotary head, a rotating piece is rotationally connected into the shell, and the rotating piece is fixedly connected to the knife handle. The tool bit drives the rotating part and the air exhaust part to operate when rotating rapidly, the negative pressure area is formed around the tool bit through cooperation of the rotating part and the air exhaust part, the negative pressure area has an adsorption effect on cooling liquid sprayed to the tool bit, and therefore the attachment time and the stay time of the cooling liquid on the tool bit are relatively prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of numerically controlled machine tools, in particular to a five-axis linked numerically controlled tool sharpening machine tool. Background Art

[0002] A five-axis CNC machine tool is a high-precision machine tool that can achieve complex spatial processing. This machine tool has five motion axes, including three linear axes (usually X, Y, and Z axes) and two rotation axes (usually A and B or C axes). These five axes can be linked simultaneously, allowing the machine tool to perform multi-faceted processing and complex surface processing. Due to its high precision and complex processing capabilities, five-axis CNC machine tools are widely used in aerospace, automobile manufacturing, precision mold manufacturing and other fields.

[0003] The impeller is an important and indispensable component in power machinery. Its structure is very complex, and it is difficult to apply traditional processing technology, and the cost performance is not high. Five-axis linkage processing technology has gradually replaced traditional processing technology. Impeller processing mainly involves the processing of blades and flow channels. The structure is divided first and then processed. An inverted "Y" path is used to improve processing efficiency. Then, the upper and lower curves of the blades are used as guide lines for fine processing to ensure that the cutting edge is tangent to the processed surface; the material commonly used for the impeller is austenitic stainless steel (such as ZGOFCRI9N19), which contains Ni elements and has high toughness, which affects the cutting performance. The tool is easily damaged by sticking. In order to solve this problem, it is necessary to use cutting coolant to cool the tool to reduce cutting thermal deformation, take away heat and chips, and reduce tool wear. In the existing technology, a tool with strong rigidity is required when grinding the impeller, and the tool In order to accommodate the thinner spacing between the upper parts of the impellers, it is impossible to open a hole in the middle to spray coolant for cooling. Therefore, multiple sets of high-pressure water nozzles are set around the tool to spray coolant. However, when the tool rotates at high speed, the linear velocity of each point on its surface is very high, which increases the relative speed of the water flow and the contact point of the tool, making it easy for the coolant to be bounced off when it hits the tool, so that the heat in the cutting area cannot be effectively taken away, resulting in the tool temperature cannot be reduced in time and the coolant cannot form a good lubricating film, the friction between the tool and the workpiece increases, resulting in increased tool wear and even tool breakage.

[0004] Therefore, a five-axis CNC tool grinding machine is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a five-axis linkage CNC tool grinding machine, which forms a negative pressure area around the tool head when working through the cooperation of the rotating part and the exhaust part. The negative pressure area produces an adsorption effect on the coolant sprayed onto the tool head, so that the adhesion and residence time of the coolant on the tool head is relatively increased, and the heat and steam generated during processing are quickly extracted to prevent the accumulation of increased heat in the processing area. The air extracted by the exhaust part is compressed into the blowing pipe and discharged into the thread groove of the tool head, reducing the possibility of chips clogging the thread groove and taking away the heat generated during the cutting process.

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

[0007] A five-axis linkage CNC tool grinding machine comprises a bed, a main shaft movably connected to the bed, a workbench arranged below the main shaft, a swivel head movably connected to the bottom of the main shaft, a tool handle rotatably connected to the bottom of the swivel head, a tool head fixedly connected to the bottom of the tool handle, a threaded groove provided on the tool head, and a plurality of groups of high-pressure nozzles and swing nozzles fixedly connected to the bottom of the main shaft, characterized in that: a shell is fixedly connected to the bottom of the swivel head, a rotating member is rotatably connected in the shell, the rotating member is fixedly connected to the tool handle, and the rotating member is eccentrically arranged with the center of the circle of the tool handle as the center, an exhaust pipe is fixedly connected to the shell, an exhaust member is fixedly connected to the end of the exhaust pipe, the exhaust member is communicated with the exhaust pipe, the exhaust member is sleeved on the end of the tool handle, and the exhaust member is annular.

[0008] The high-speed rotating tool handle drives the rotating part to rotate in the shell. When the rotating part rotates one circle, the air under the vacuum part is sucked into the vacuum part and the gas molecules enter the shell. When vacuuming, since the vacuum part is annular, the area around the cutter head is a negative pressure area. When the impeller is processed, the nozzle sprays coolant to cool the cutter head. When the coolant comes into contact with the negative pressure, the negative pressure adsorbs the coolant, which increases the attachment and residence time of the water flow on the cutter head. When the adsorption and residence time of the coolant is increased, the vacuum part can quickly remove heat and steam to prevent accumulation in the processing area.

[0009] Preferably, the rotating part includes a turntable, a groove, and a blade. The turntable is fixedly connected to the tool handle and is eccentrically arranged in the shell relative to the tool handle. The groove is opened on the turntable. The blade is slidably connected in the groove. The end of the blade is in contact with the inner wall of the shell, and the exhaust pipe is flush with the height of the blade.

[0010] Preferably, the grooves are provided in multiple groups and arranged in a circular array on the edge of the turntable.

[0011] Preferably, the vacuum member comprises a connecting ring and a cavity, wherein the connecting ring is fixedly connected to the end of the vacuum pipe, the tool handle is rotatably connected to the middle of the connecting ring, and the cavity is opened at the bottom of the connecting ring. The connecting ring is designed to be annular so that when vacuuming, the area around the tool head forms a negative pressure area.

[0012] Preferably, the exhaust pipe is provided with a plurality of bending points, and the exhaust pipe is arranged along the edges of the cross-sections of the shell and the handle, which reduces the space occupied by the exhaust pipe.

[0013] Preferably, the cavity is provided with multiple groups and the circular array is at the bottom of the connecting ring, and the side wall of one side of the cavity is inclined, and the angle between it and the horizontal plane is less than 90°. When one side of the cavity is set to be inclined, the efficiency of air extraction can be improved, and the flow path of the gas can be optimized to reduce impact.

[0014] Preferably, a plurality of groups of cavities are arranged on the outer edge of the connecting ring, and the cavities are arranged on the outer edge of the connecting ring to expand the range of the negative pressure area.

[0015] Preferably, a blow pipe is fixedly connected to one side of the housing corresponding to the exhaust pipe, and a channel is provided on the tool handle, the channel corresponds to the end of the blow pipe, and the end of the channel corresponds to the starting end of the thread groove. After being sucked into the housing, the gas flows from the blow pipe into the thread groove on the tool head, reducing the possibility of chips blocking the thread groove.

[0016] Preferably, the blowing pipe corresponds to the height of the exhaust pipe, and the diameter of the blowing pipe is smaller than that of the exhaust pipe. Since the diameter of the blowing pipe is smaller, a higher air flow velocity is generated when the air is discharged from the blowing pipe.

[0017] Preferably, the channel includes an annular groove and a groove, the annular groove is connected to the groove, the groove is spirally arranged on the handle, the bottom of the handle is also provided with a notch, and the two ends of the notch are connected to the spiral groove and the groove. The airflow enters the spiral groove from the channel, so that the contact time of the chips with the tool and the workpiece is reduced when the cutter head is working, and the heat generated during the cutting process can be taken away to reduce the temperature influence of the workpiece.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In the prior art, multiple groups of high-pressure water spray heads are arranged around the tool to spray coolant. However, when the tool rotates at high speed, the linear speed of each point on its surface is very high, which increases the relative speed of the water flow and the contact point of the tool, making it easy for the coolant to be bounced off when it hits the tool, so that the heat in the cutting area cannot be effectively taken away. The device uses the tool head to drive the rotating part and the exhaust part to operate when the tool head rotates rapidly, and uses the cooperation between the two to form a negative pressure area around the tool head. The negative pressure area produces an adsorption effect on the coolant sprayed onto the tool head, so that the adhesion and residence time of the coolant on the tool head is relatively increased. While increasing the adsorption and residence time of the coolant, the exhaust part can quickly remove the heat and steam generated during processing to prevent the accumulation of increased heat in the processing area.

[0020] 2. When the rotating part is running, the air drawn by the exhaust part is compressed into the air pipe and discharged, and the exhausted air will be poured into the thread groove of the cutter head, reducing the possibility of chips blocking the thread groove, reducing the contact time between chips and the tool and workpiece, and taking away the heat generated in the cutting process, reducing the temperature impact of the workpiece, and improving the quality and precision of the processed surface.

[0021] 3. When the negative pressure sucks air, the dust generated by the impeller during grinding will be quickly sucked away to prevent the dust from entering the spindle housing through the gap between the spindle shaft diameter and the spindle housing when the spindle runs at high speed and the speed is above 18000RPM (especially when the A-axis is involved in the linkage) and corroding the spindle bearings, causing wear of the spindle bearings and other parts in the housing. In addition, when the rotating parts are evacuated, the airflow is controlled, the airflow path is optimized, the aerodynamic resistance and drag torque of the high-speed rotating cutter head are reduced, and the vibration and imbalance caused by the aerodynamic effect are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a five-axis linkage CNC tool grinding machine tool of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the rotating member of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the air extraction pipe of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the channel of the present invention;

[0026] Figure 5 For the present invention Figure 3 A magnified image of point A;

[0027] Figure 6 It is a schematic diagram of the structure of the turntable of the present invention;

[0028] Figure 7It is a structural cross-sectional view of the rotating part of the present invention;

[0029] Figure 8 is a schematic diagram of the gas path of the present invention;

[0030] Fig. 9 It is a schematic diagram of the coolant flow structure of the present invention.

[0031] In the figure: 1, bed base; 2, spindle; 3, workbench; 4, rotary head; 5, tool handle; 6, tool head; 7, thread groove; 8, high-pressure nozzle; 9, swing nozzle; 10, shell; 11, rotating part; 12, exhaust pipe; 13, exhaust part; 111, turntable; 112, groove; 113, blade; 131, connecting ring; 132, cavity; 14, blowing pipe; 15, channel; 151, annular groove; 152, groove; 153, notch. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figures 1 to 9 The present invention provides a five-axis CNC tool grinding machine, and the technical solution is as follows:

[0034] As an embodiment of the present invention, refer to Figure 1 A five-axis linkage CNC tool grinding machine comprises a bed 1, a spindle 2 movably connected to the bed 1, a workbench 3 arranged below the spindle 2, a swivel head 4 movably connected to the bottom of the spindle 2, a tool handle 5 rotatably connected to the bottom of the swivel head 4, a tool head 6 fixedly connected to the bottom of the tool handle 5, a threaded groove 7 provided on the tool head 6, and a plurality of groups of high-pressure nozzles 8 and a swing nozzle 9 fixedly connected to the bottom of the spindle 2, characterized in that: a shell 10 is fixedly connected to the bottom of the swivel head 4, a rotating member 11 is rotatably connected in the shell 10, the rotating member 11 is fixedly connected to the tool handle 5, and the rotating member 11 is eccentrically arranged with the center of the circle of the tool handle 5, an exhaust pipe 12 is fixedly connected to the shell 10, an exhaust member 13 is fixedly connected to the end of the exhaust pipe 12, the exhaust member 13 is communicated with the exhaust pipe 12, the exhaust member 13 is sleeved on the end of the tool handle 5, and the exhaust member 13 is annular.

[0035] The high-speed rotating tool handle 5 drives the rotating part 11 to rotate in the shell 10. After the rotating part 11 rotates one circle, the air below the exhaust part 13 is sucked into the exhaust part 13, and the gas molecules enter the shell 10. During the exhaust, since the exhaust part 13 is annular, the area around the cutter head 6 is a negative pressure area. When the impeller is processed, the nozzle sprays coolant to cool the cutter head 6. When the coolant contacts the negative pressure, the negative pressure has an adsorption effect on the coolant, so that the attachment and residence time of the water flow on the cutter head 6 is relatively increased. When the adsorption and residence time of the coolant is increased, the exhaust part 13 can quickly remove heat and steam to prevent the accumulation of increased heat in the processing area, and can also reduce the situation where the operator's line of sight is affected by the generation of a large amount of steam.

[0036] As an embodiment of the present invention, refer to Figure 2 and Figure 6 The rotating member 11 includes a turntable 111, a groove 112, and a blade 113. The turntable 111 is fixedly connected to the knife handle 5, and the turntable 111 is eccentrically arranged in the housing 10 relative to the knife handle 5. The groove 112 is opened on the turntable 111, and the blade 113 is slidably connected in the groove 112. The end of the blade 113 is in contact with the inner wall of the housing 10, and the exhaust pipe 12 is flush with the height of the blade 113. The air can be sucked into the housing 10 through the high-speed rotation of the turntable 111.

[0037] Specifically, when the tool is working, the handle 5 is driven to rotate at a high speed. Under the high-speed rotation of the handle 5, the blades 113 in the groove 112 move under the action of centrifugal force, and the ends of the blades 113 are tightly attached to the inner wall of the shell 10, and the bottom of the shell 10 is attached to the turntable 111, so that a sealed working chamber is formed between the two groups of blades 113. The working volume between the blades 113 increases or decreases with the change of position. When the volume of the working chamber increases, the gas is sucked into the exhaust pipe 12.

[0038] As an embodiment of the present invention, refer to Figure 6 The grooves 112 are arranged in a plurality of groups and arranged in a circular array on the edge of the turntable 111 .

[0039] As an embodiment of the present invention, refer to Figure 3 and Figure 5 The air extraction member 13 includes a connecting ring 131 and a cavity 132. The connecting ring 131 is fixedly connected to the end of the air extraction pipe 12, the handle 5 is rotatably connected to the middle of the connecting ring 131, and the cavity 132 is opened at the bottom of the connecting ring 131. The connecting ring 131 is designed to be annular so that the area around the cutter head 6 forms a negative pressure area when exhausting air.

[0040] As an embodiment of the present invention, refer to Figure 3The exhaust pipe 12 is provided with a plurality of bending points, and the exhaust pipe 12 is arranged along the edges of the cross sections of the shell 10 and the handle 5 , which reduces the space occupied by the exhaust pipe 12 .

[0041] As an embodiment of the present invention, refer to Figure 5 and Figure 7 The cavity 132 is provided with multiple groups and the circular array is at the bottom of the connecting ring 131. The side wall of one side of the cavity 132 is inclined, and the angle between it and the horizontal plane is less than 90°. When one side of the cavity 132 is set to be inclined, the efficiency of air extraction can be improved, and the flow path of the gas can be optimized to reduce the impact. The side wall of the cavity 132 is inclined outward, so that when air is extracted, the air of the outer circle of the cutter head is sucked, and there is no interference with the subsequent air discharged from the blowing pipe 14 into the spiral groove.

[0042] As an embodiment of the present invention, refer to Figure 5 The plurality of cavities 132 are arranged on the outer edge of the connecting ring 131 , and the outer edge of the connecting ring 131 can expand the range of the negative pressure area.

[0043] As an embodiment of the present invention, refer to Figure 4 The housing 10 is also fixedly connected to a blow pipe 14 on one side corresponding to the exhaust pipe 12, and a channel 15 is provided on the tool handle 5. The channel 15 corresponds to the end of the blow pipe 14, and the end of the channel 15 corresponds to the starting end of the thread groove 7. When the turntable 111 rotates, the volume of the working chamber gradually decreases, and the air inside is compressed and discharged from the blow pipe 14. The discharged gas enters the thread groove 7 on the tool head 6 along the channel 15, and the debris blocked in the thread groove 7 can be blown away.

[0044] As an embodiment of the present invention, refer to Figure 7 The height of the air blowing pipe 14 corresponds to that of the air exhaust pipe 12, and the diameter of the air blowing pipe 14 is smaller than that of the air exhaust pipe 12. Since the diameter of the air blowing pipe 14 is smaller, a higher air flow velocity is generated when the air is discharged from the air blowing pipe 14. The air flow reduces the possibility of chips blocking the thread groove 7 and can also reduce the contact time between the chips and the tool and the workpiece, taking away the heat generated during the cutting process, reducing the temperature influence of the workpiece, and improving the quality and accuracy of the processed surface.

[0045] As an embodiment of the present invention, refer to Figure 4 and Figure 8The channel 15 includes an annular groove 151 and a groove 152, the annular groove 151 is connected with the groove 152, the groove 152 is spirally arranged on the handle 5, and a notch 153 is also provided at the bottom of the handle 5, and the two ends of the notch 153 are connected with the thread groove 7 and the groove 152. In actual operation, the handle 5 rotates continuously, and the annular groove 151 and the groove 152 are provided in order to discharge the gas in the housing 10 into the thread groove 7, and the port of the air blowing pipe 14 is always kept in the annular groove 151. When the air blowing pipe 14 exhausts, the gas enters the groove 152 through the annular groove 151. In the process of continuous exhaust, the gas is pushed into the thread groove 7. The design of the thread groove 7 and the dynamic pressure effect generated by the high-speed rotation will make the gas move along the thread groove 7 while maintaining a certain concentration.

[0046] Working principle: When the five-axis CNC machine tool is grinding the impeller, the motor drives the tool handle 5 to rotate at high speed and processes along the set path, while the high-pressure nozzle 8 and the swing nozzle 9 spray coolant on the tool head 6 to cool it down during operation, but the coolant is easily bounced off when it hits the tool, so that the heat in the cutting area cannot be effectively taken away; in order to solve this problem, the turntable 111 on the tool handle 5 rotates at high speed during processing, and the blades 113 in the groove 112 move under the action of centrifugal force. The ends of the blades 113 are tightly attached to the inner wall of the shell 10, and a sealed working chamber is formed between the blades 113. The working volume between the blades 113 increases or decreases with the change of position. For each rotation of the turntable 111, each working chamber completes one suction or one exhaust. When the volume of the working chamber increases, the gas is sucked in by the exhaust pipe 12, and when the volume of the working chamber decreases, the air is compressed and discharged from the blowing pipe 14;

[0047] See also Figure 3 and Fig. 9 When the gas is sucked into the exhaust pipe 12, a negative pressure area is formed around the cutter head 6. The negative pressure area has an adsorption effect on the coolant sprayed onto the cutter head 6, so that the attachment and residence time of the coolant on the cutter head 6 is relatively increased. While increasing the adsorption and residence time of the coolant, the exhaust member 13 can quickly remove the heat and steam generated during processing to prevent the accumulation of heat in the processing area. When the air is sucked, the dust generated by the impeller during grinding is quickly sucked away to prevent the dust from entering the spindle 2 housing 10 through the gap between the spindle 2 shaft diameter and the spindle 2 housing 10 when the spindle 2 is running at a high speed and the speed is above 18000RPM (especially when the A axis is involved in the linkage) and corroding the spindle 2 bearing, causing the spindle 2 bearing and other parts in the housing 10 to wear. When the rotating member 11 is exhausting air, the airflow is controlled, the airflow path is optimized, the aerodynamic resistance and resistance torque of the high-speed rotating cutter head 6 are reduced, and the vibration and imbalance caused by the aerodynamic effect are reduced.

[0048] See also Figure 4 and Figure 8 When the air is compressed and discharged from the air blowing pipe 14, the gas enters the groove 152 through the annular groove 151. During the continuous exhaust process, the gas is pushed into the thread groove 7. The design of the thread groove 7 and the dynamic pressure effect generated by the high-speed rotation will cause the gas to move along the thread groove 7 while maintaining a certain concentration. The exhausted air will be poured into the thread groove 7 of the cutter head 6, reducing the possibility of chips clogging the thread groove 7, reducing the contact time of chips with the tool and the workpiece, and can also take away the heat generated in the cutting process, reduce the temperature influence of the workpiece, and improve the quality and precision of the processed surface.

[0049] It should be noted that in the prior art, for a high-speed rotating five-axis head spindle, the front end of the spindle extends out of the spindle housing, and there is a gap between the spindle shaft diameter and the spindle housing. In order to prevent the leakage of oil in the spindle housing and the entry of external air containing dust and water mist, many machine tool spindle manufacturers adopt a relatively mature dynamic seal connection technology. Although this dynamic seal structure is simple in structure and has good processability and is currently widely used, this structure is only suitable for spindles running at low speeds (below 12000rpm).

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A five-axis linkage CNC tool sharpening machine tool, comprising a bed (1), a spindle (2) movably connected to the bed (1), a workbench (3) arranged below the spindle (2), a swivel head (4) movably connected to the bottom of the spindle (2), a tool handle (5) rotatably connected to the bottom of the swivel head (4), a tool head (6) fixedly connected to the bottom of the tool handle (5), a threaded groove (7) provided on the tool head (6), and a plurality of high-pressure nozzles (8) and swing nozzles (9) fixedly connected to the bottom of the spindle (2), characterized in that: The bottom of the swivel head (4) is fixedly connected to a shell (10), a rotating member (11) is rotatably connected inside the shell (10), the rotating member (11) is fixedly connected to the knife handle (5), and the rotating member (11) is eccentrically arranged with the center of the knife handle (5), the shell (10) is fixedly connected to an exhaust pipe (12), the end of the exhaust pipe (12) is fixedly connected to an exhaust member (13), the exhaust member (13) is communicated with the exhaust pipe (12), the exhaust member (13) is sleeved on the end of the knife handle (5), and the exhaust member (13) is ring-shaped.

2. A five-axis CNC tool grinding machine according to claim 1, characterized in that: The rotating member (11) comprises a rotating disk (111), a groove (112), and a blade (113); the rotating disk (111) is fixedly connected to the knife handle (5), and the rotating disk (111) is eccentrically arranged in the housing (10) relative to the knife handle (5); the groove (112) is arranged on the rotating disk (111); the blade (113) is slidably connected in the groove (112); the end of the blade (113) is in contact with the inner wall of the housing (10); and the exhaust pipe (12) is flush with the height of the blade (113).

3. The five-axis CNC tool grinding machine according to claim 2, characterized in that: The grooves (112) are formed in multiple groups and arranged in a circular array on the edge of the rotating disk (111).

4. The five-axis CNC tool grinding machine according to claim 3, characterized in that: The air extraction member (13) comprises a connecting ring (131) and a cavity (132); the connecting ring (131) is fixedly connected to the end of the air extraction pipe (12); the knife handle (5) is rotatably connected to the middle of the connecting ring (131); and the cavity (132) is opened at the bottom of the connecting ring (131).

5. The five-axis CNC tool grinding machine according to claim 4, characterized in that: The air extraction pipe (12) is provided with a plurality of bending points, and the air extraction pipe (12) is arranged along the edges of the cross sections of the housing (10) and the knife handle (5).

6. The five-axis CNC tool grinding machine according to claim 5, characterized in that: The cavity (132) is provided with multiple groups and a circumferential array at the bottom of the connecting ring (131); a side wall of one side of the cavity (132) is inclined, and the angle between the side wall and the horizontal plane is less than 90 degrees.

7. The five-axis CNC tool grinding machine according to claim 6, characterized in that: A plurality of groups of cavities (132) are arranged on the outer edge of the connecting ring (131).

8. A five-axis CNC tool grinding machine according to any one of claims 1 to 7, characterized in that: The shell (10) is also fixedly connected to a blow pipe (14) on one side corresponding to the exhaust pipe (12); a channel (15) is provided on the knife handle (5); the channel (15) corresponds to the end of the blow pipe (14); and the end of the channel (15) corresponds to the starting end of the thread groove (7).

9. The five-axis CNC tool grinding machine according to claim 8, characterized in that: The air blowing pipe (14) corresponds in height to the air exhaust pipe (12), and the diameter of the air blowing pipe (14) is smaller than that of the air exhaust pipe (12).

10. The five-axis CNC tool grinding machine according to claim 9, characterized in that: The channel (15) comprises an annular groove (151) and a groove (152), the annular groove (151) being connected to the groove (152), the groove (152) being spirally arranged on the handle (5), the bottom of the handle (5) also being provided with a notch (153), the two ends of the notch (153) being connected to the thread groove (7) and the groove (152).

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