Multi-edge metal cutting tool

Abstract

The utility model discloses a multi-cutting-edge metal cutting tool which comprises a tool handle, a tool bar, a cooling liquid guide part, a tool bit and a cutting tool, the whole tool is installed on a cutting tool clamp through the tool handle, one end of the tool bar is connected with the tool handle, the tool bit is arranged at the other end of the tool bar, and the cutting tool is detachably arranged on the tool bit. And the cooling liquid guide part for guiding the cooling liquid is arranged in the cutter bar, and the cooling liquid guide part guides the cooling liquid to flow to the cutter so as to cool the cutter and the workpiece at the cutting part. The cutting tool has the advantages that the liquid guide groove in the tool bar is used for guiding cooling liquid to flow into the liquid guide flow channel in the tool bar, a tool is primarily cooled, the cooling liquid flows into the liquid storage cavity in the tool bar through the liquid guide flow channel, and the cooling liquid is discharged through the liquid outlet which is formed in the tool bit guide groove, corresponds to the cutting tool and communicates with the liquid storage cavity; the cooling liquid is directly sprayed on the cutting knife to cool the cutting knife, and the problems that in the background technology, the cooling liquid cannot be directly sprayed on the cutting knife, and the cooling and heat dissipation effects of the cutting knife are poor are solved.

Description

Technical Field

[0001] The utility model specifically relates to a multi-edge metal cutting tool. Background Technique

[0002] Subtractive manufacturing, also known as material removal manufacturing, is a manufacturing process based on the gradual removal of materials. Subtractive manufacturing is to gradually remove excess materials from raw materials through mechanical processing methods such as cutting and grinding to obtain parts or finished products with the required shapes and dimensions. Its process can be summarized as "layer-by-layer removal", and subtractive manufacturing is widely used in daily processing and production.

[0003] Cutting is one of the most common subtractive manufacturing methods. Cutting is to use a cutting tool to cut off the excess material layer on the blank or workpiece to form chips, so that the workpiece obtains the specified geometric shape, dimensions and surface quality.

[0004] A CNC milling machine can perform processing of complex shapes and features. In processing, multi-edge milling cutters are generally used for finish machining, and few-edge milling cutters are often used for rough machining. In the finish machining process, higher requirements are often placed on the surface of the cutting piece, and a lot of heat is often generated during the milling process. Currently, it is generally to spray coolant on the tool through a pipeline for cooling and temperature reduction. However, the liquid outlet of the coolant spray can only be aligned in one direction. Especially when processing deeper holes, it is very difficult for the coolant to spray to the tool tip position and can only be sprayed on the tool shank, and heat dissipation is carried out through heat conduction, resulting in poor cooling and heat dissipation effects and reducing the service life of the tool.

[0005] In Chinese Patent: 201921049938.7, titled: A Multi-Edge Metal Cutting Tool, it is recorded that it includes: a milling cutter head and a tool shank. The milling cutter head and the tool shank are coaxially connected. The cutting edge part of the milling cutter head has more than three cutting edges. The characteristic is that a liquid distribution plate is rotatably connected to the tool shank. The liquid distribution plate has a liquid distribution groove for storing coolant. The upper surface of the liquid distribution plate has a liquid inlet opening, and the liquid inlet opening is communicated with the liquid distribution groove. A number of liquid leakage holes are opened at the bottom of the liquid distribution plate, and the liquid leakage holes are used to guide the coolant in the liquid distribution groove to the milling cutter head and the cutting piece.

[0006] As shown in the attached drawings of Patent 201921049938.7, this patent mainly sets a liquid distribution plate on the tool shank. The coolant is discharged into the liquid distribution groove in the liquid distribution plate through the liquid inlet opening. The liquid distribution groove disperses the coolant to multiple parts of the milling cutter head and the cutting piece through the liquid leakage holes in order to achieve the effect of uniform heat dissipation. This scheme can play a heat dissipation effect in use, but it is very difficult for the coolant to be evenly sprayed on the tool tip when processing deeper holes, and the use effect is poor. Summary of the Utility Model

[0007] The technical problem to be solved by the utility model is the problem of poor heat dissipation effect during the cutting process of the existing multi-edge metal cutting tool mentioned in the background technique.

[0008] In view of the above technical problems, a multi-edge metal cutting tool is proposed; it is realized through the following technical solutions: a multi-edge metal cutting tool includes a tool handle, a tool rod, a coolant guiding part, a tool head and a cutting tool. The whole tool is installed on a cutting tool fixture through the tool handle. One end of the tool rod is connected to the tool handle, and the other end is provided with a tool head. The cutting tool for cutting is detachably arranged on the tool head. The coolant guiding part for guiding the coolant is arranged in the tool rod, and the coolant guiding part guides the coolant to flow towards the cutting tool to cool down the cutting tool and the workpiece at the cutting position.

[0009] Preferably, for the technical solution of the present utility model, the outer diameter of the tool handle is greater than that of the tool rod. A liquid guiding groove is arranged at the connection of the tool rod and the tool handle. The coolant guiding part is arranged in the tool rod, and one end is close to the liquid guiding groove. The coolant flows into the coolant guiding part through the liquid guiding groove. The arrangement of the liquid guiding groove enables the coolant ejected from the conduit to flow into the tool rod through the liquid guiding groove, which is convenient for dissipating heat and cooling the cutting tools at the tool rod and the tool head, and is easy to use.

[0010] Preferably, for the technical solution of the present utility model, the coolant guiding part includes a temporary liquid storage tank and a liquid guiding groove flow path. The temporary liquid storage tank is arranged at one end of the tool rod close to the tool handle, and the liquid guiding groove flow path is arranged in the tool rod. The liquid inlet of the liquid guiding groove flow path is communicated with the temporary liquid storage tank. Such an arrangement facilitates the coolant to flow into the liquid guiding groove flow path through the liquid inlet, which is convenient for dissipating heat and cooling the cutting tool on the tool head and is easy to use.

[0011] Preferably, for the technical solution of the present utility model, the liquid guiding groove flow path is spiral, and the spiral direction of the liquid guiding groove flow path is opposite to the rotation direction of the whole tool. Such an arrangement enables the coolant to enter the tool rod faster under the action of centrifugal force when the tool rotates, which is convenient for heat dissipation.

[0012] Preferably, for the technical solution of the present utility model, a liquid storage cavity is arranged at one end of the liquid guiding groove flow path close to the tool head. The liquid storage cavity is arranged inside the tool rod. The coolant guided by the liquid guiding groove flow path is stored in the liquid storage cavity. The arrangement of the liquid storage cavity is convenient for storing the coolant, so that when the coolant spills out through the liquid outlet, coolant flows out of each liquid outlet, ensuring that each cutting tool can dissipate heat and improving the heat dissipation effect.

[0013] Preferably, for the technical solution of the present utility model, the tool head includes a plurality of guiding grooves and cutter mounting grooves arranged in the guiding grooves. The guiding grooves are arranged at intervals on the arc surface of the tool head, and the cutter mounting grooves are arranged on the side surfaces of the guiding grooves. The cutting tool is detachably installed in the cutter mounting grooves.

[0014] For the optimization of the technical solution of the present utility model, a liquid outlet is provided in the guiding groove, and the liquid outlet communicates with the liquid storage cavity in the coolant guiding part. The coolant in the liquid storage cavity flows to the cutting tool through the liquid outlet. The setting of the liquid outlet facilitates the spraying of the coolant in the liquid storage cavity onto the cutting tool through the liquid outlet, which is convenient for dissipating heat from the cutting tool and improving the heat dissipation effect.

[0015] For the optimization of the technical solution of the present utility model, on the side surface of the cutting tool installation groove, a functional cavity is provided perpendicular to the cutting tool installation groove. The blade in the cutting tool is placed in the functional cavity. The setting of the functional cavity facilitates the protection of the unused blades on the cutting tool and improves the service life of the cutting tool.

[0016] For the optimization of the technical solution of the present utility model, the cutting tool includes a plurality of blades and a blade installation block. The plurality of blades are arranged on the blade installation block, and the blade installation block is detachably arranged in the cutting tool installation groove in the tool head. The arrangement of the plurality of blades enables different cutting effects to be achieved by adjusting different blades, improving the versatility.

[0017] The beneficial effects of the present utility model compared with the prior art are:

[0018] According to the technical solution of the present utility model, in the present utility model, the liquid guiding groove provided on the surface of the tool bar is used to guide the coolant into the liquid guiding channel inside the tool bar, preliminarily cooling the tool bar of the tool during use. The coolant flows into the liquid storage cavity in the tool bar through the liquid guiding channel, and the liquid outlet opened on the guiding groove of the tool head corresponding to the cutting tool and communicating with the liquid storage cavity is used to discharge the coolant, so that the coolant is directly sprayed onto the cutting tool to cool the cutting tool, solving the problem that the coolant in the background technology cannot be directly sprayed onto the cutting tool and the heat dissipation effect of the cutting tool is poor. Brief Description of the Drawings

[0019] Figure 1 Is a three-dimensional schematic diagram of the present utility model;

[0020] Figure 2 Is a partial cross-sectional view of the tool bar;

[0021] Figure 3 Is a three-dimensional schematic diagram at the tool head;

[0022] Figure 4 Is a partial cross-sectional view of the tool head (excluding the cutting tool);

[0023] Figure 5 Is a three-dimensional schematic diagram of the cutting tool;

[0024] Figure 6 Is an exploded view of the present utility model;

[0025] Explanation of the accompanying drawings: 1-handle, 2-tool rod, 21-liquid guide groove, 3-coolant guide part, 31-temporary liquid storage tank, 32-liquid guide channel, 33-liquid inlet, 34-liquid storage chamber, 4-tool head, 41-guide groove, 42-cutter mounting groove, 43-guide surface, 44-liquid outlet, 45-functional cavity, 5-cutting knife, 51-blade, 52-blade mounting block. DETAILED DESCRIPTION

[0026] The following will be combined with the attached embodiment of the utility model Figure 1-6 , the technical solutions in the embodiments of the utility model are described in detail.

[0027] Example

[0028] like Figure 1 , 2 As shown in Figure 6, a multi-blade metal cutting tool includes a shank 1, a tool rod 2, a coolant guide 3, a cutter head 4 and a cutting tool 5. The tool as a whole is installed on the tool holder fixture of the cutting tool through the shank 1. One end of the tool rod 2 is connected to the shank 1, and the other end is connected to the cutter head 4. The cutting tool 5 for cutting a metal workpiece can be detachably installed on the cutter head 4. The coolant guide 3 for guiding the coolant is arranged in the shank 2. The coolant guide 3 guides the coolant to flow to the cutting tool 5, so as to cool down the cutting tool 5 and the workpiece at the cutting location.

[0029] The main function of the tool handle 1 is to carry the entire tool, and the entire tool can be installed on the tool holder fixture of the cutting tool through the tool handle 1.

[0030] The main function of the tool rod 2 is to carry the tool head 4 and serve as a carrier for the coolant guide 3 . The coolant guide 3 is arranged inside the tool rod 2 .

[0031] The main function of the coolant guide part 3 is to circulate the coolant. The coolant can flow to the cutter head 4 through the coolant guide part 3 and be sprayed out through the liquid outlet 44 at the cutter head 4 to dissipate heat and cool the cutting tool 5, thereby improving the cutting quality and the service life of the cutting tool 5.

[0032] The cutter head 4 serves as a carrier for mounting the cutting tool 5 . The cutting tool 5 is mounted on the cutter head 4 . The cutting tool 5 is used to cut a workpiece for processing.

[0033] The tool handle 1 is a cylindrical metal rod, and the tool handle 1 can be installed on a tool holder fixture of a cutting tool. The tool holder fixture is an existing device, and the fixing method between the two is also an existing technology.

[0034] The knife rod 2 is a cylindrical metal rod, and the outer diameter of the knife rod 2 is slightly smaller than the outer diameter of the knife handle 1. One end of the knife rod 2 is coaxially welded with one end of the knife handle 1, and no relative movement can occur between the two.

[0035] In order to facilitate the coolant to enter the coolant guiding portion 3 inside the tool shank 2, at the connection between the tool shank 2 and the tool holder 1, a liquid guiding groove 21 with an arc-shaped cross-section is recessed perpendicular to the tool shank 2. The liquid guiding groove 21 surrounds the axis of the tool shank 2 for one week. The setting of the liquid guiding groove 21 facilitates the coolant to more easily flow into the coolant guiding portion 3 inside the tool shank 2 through the arc-shaped liquid guiding groove 21, which is convenient for dissipating heat and cooling the cutting tool.

[0036] As Figure 1 and 2 shown, the coolant guiding portion 3 includes a temporary liquid storage tank 31 and a liquid guiding channel 32. The temporary liquid storage tank 31 is arranged on the lower end surface of the liquid guiding groove 21 on the tool shank 2, and the liquid guiding channel 32 is arranged inside the tool shank 2, and the liquid guiding channel 32 is communicated with the liquid guiding channel 32 through a liquid inlet 33.

[0037] The temporary liquid storage tank 31 is an annular groove. The main function of the temporary liquid storage tank 31 is to temporarily store the coolant. The coolant sprayed from the nozzle of the coolant conduit can be guided into the temporary liquid storage tank 31 through the liquid guiding groove 21, and the coolant in the temporary liquid storage tank 31 can also enter the liquid guiding channel 32 through the liquid inlet 33 on the bottom surface of the temporary liquid storage tank 31, thereby dissipating heat and cooling the cutting tool 5.

[0038] Regarding the setting of the temporary liquid storage tank 31, the temporary liquid storage tank 31 is recessed perpendicular to the lower end surface of the liquid guiding groove 21 on the tool shank 2. The temporary liquid storage tank 31 is integrally circular-ring-shaped, and the outer diameter of the temporary liquid storage tank 31 is slightly smaller than the outer diameter of the tool shank 2.

[0039] Definition: In this embodiment, based on the workpiece, the direction in which the cutting tool points to the workpiece to be machined is defined as the lower direction, the direction in which the workpiece opposite to it points to the cutting tool is defined as the upper direction, the direction from the outside to the cutting tool is defined as the inner direction, and on the contrary, the direction from the cutting tool to the outside is defined as the outer direction.

[0040] The liquid guiding channel 32 is a spiral groove with a rectangular cross-section. The liquid guiding channel 32 is opened inside the tool shank 2. The upper end of the liquid guiding channel 32 is communicated with the temporary liquid storage tank 31. The main function of the liquid guiding channel 32 is to serve as a channel for the coolant to flow through. The liquid guiding channel 32 extends along the axial direction of the tool shank 2, and the lower end of the liquid guiding channel 32 is close to the tool tip 4.

[0041] In order to facilitate the coolant in the temporary liquid storage tank 31 to enter the liquid guiding channel 32, a semi-circular hole is recessed perpendicular to the lower surface of the temporary liquid storage tank 31. This semi-circular hole is named the liquid inlet 33. The outer diameter of the liquid inlet 33 is the same as the outer diameter of the temporary liquid storage tank 31, and the inner diameter of the liquid inlet 33 is the same as the inner diameter of the temporary liquid storage tank 31. Through the liquid inlet 33, the temporary liquid storage tank 31 and the liquid guiding channel 32 can be communicated, and the coolant in the temporary liquid storage tank 31 flows into the liquid guiding channel 32 through the liquid inlet 33.

[0042] To facilitate the coolant in the temporary liquid storage tank 31 to enter the liquid guide channel 32, the spiral direction of the liquid guide channel 32 is opposite to the overall rotation direction of the tool. In this way, when the tool rotates, the coolant can enter the liquid guide channel 32 more easily. At the same time, under the action of centrifugal force, the coolant in the liquid guide channel 32 can quickly flow from the upper end to the lower end of the liquid guide channel 32, facilitating the heat dissipation of the tool.

[0043] To facilitate the coolant to dissipate heat from the cutting tool 5 at the tool tip 4, a circular liquid storage cavity 34 is provided inside the lower end of the tool shank 2. The liquid storage cavity 34 is communicated with the liquid guide channel 32.

[0044] After the coolant enters the liquid guide channel 32 through the liquid inlet 33, it is guided by the liquid guide channel 32 and stored in the liquid storage cavity 34. The liquid storage cavity 34 is communicated with the outside through the liquid outlet 44. The coolant in the liquid storage cavity 34 is discharged through the liquid outlet 44 and sprayed onto the cutting tool 5 to dissipate heat from the cutting tool 5.

[0045] As Figure 1 、 3 and shown in Figure 4, the tool tip 4 includes a guiding groove 41 and a cutting tool mounting groove 42. The guiding groove 41 is arranged on the side surface of the tool tip 4, and the cutting tool mounting groove 42 for mounting the cutting tool 5 is arranged on the surface of the guiding groove 41.

[0046] The tool tip 4 is a cylindrical metal rod. The diameter of the tool tip 4 is the same as the outer diameter of the tool shank 2. The main function of the tool tip 4 is to serve as a carrier for mounting the cutting tool 5. The tool tip 4 is connected to the lower end of the tool shank 2. The connection between the two can be a permanent welding or a screw connection. In this embodiment, welding is preferably used.

[0047] To facilitate the discharge of the chips after cutting, an arc-shaped guiding groove 41 is recessed perpendicularly to the arc surface on the arc surface of the tool tip 4. The cross-section of the guiding groove 41 is triangular. The guiding groove 41 includes two arc-shaped guiding surfaces 43. The guiding groove 41 is communicated with the outside, and the cross-section of the guiding groove 41 near the lower end of the tool tip 4 is larger than that of the upper end. The cut chips can be discharged to the outside through the guiding groove 41, facilitating the machining of the workpiece by the tool and improving the machining quality of the workpiece.

[0048] To improve the chip removal ability, a plurality of guiding grooves 41 are arranged on the tool tip 4 in the radial direction of the tool tip 4. In this embodiment, preferably 5 guiding grooves 41 are provided. The chip removal ability of the tool tip 4 can be improved through the 5 guiding grooves 41.

[0049] To facilitate the installation of the cutting tool 5, on one of the guiding surfaces 43 of the guiding groove 41, a rectangular groove is recessed perpendicular to the guiding surface 43. This groove is named the cutter installation groove 42. The two side surfaces of the cutter installation groove 42 communicate with the outside. Threaded holes are perpendicularly opened on the surface of the cutter installation groove 42, and the cutting tool 5 is installed in the cutter installation groove 42 through screws.

[0050] In addition, to facilitate the storage of the cutting blades 51 on the cutting tool 5, a groove with a rectangular cross-section is opened on the side surface of the cutter installation groove 42. This groove is named the functional cavity 45. The unused cutting blades 51 on the cutting tool 5 are stored in the functional cavity 45 to protect the unused cutting blades 51 from wear before use, thereby improving the overall service life of the cutting tool 5.

[0051] To facilitate the heat dissipation of the cutting tool 5, a circular liquid outlet 44 is opened on each guiding groove 41. The liquid outlet 44 communicates with the liquid storage cavity 34, and the liquid outlet 44 points to the cutting blade 51 on the cutting tool 5. During cutting, the coolant in the liquid storage cavity 34 can be evenly sprayed out from each liquid outlet 44 through the liquid outlet 44 and sprayed onto each cutting tool 5, achieving uniform heat dissipation. This not only improves the heat dissipation effect but also extends the service life of the cutting tool 5.

[0052] As Figure 4 、 5 and shown in 6, the cutting tool 5 includes a cutting blade 51 and a blade mounting block 52. The cutting blade 51 is arranged on the blade mounting block 52, and the blade mounting block 52 is installed in the cutter installation groove 42 through screws.

[0053] The blade mounting block 52 is a metal block with a rectangular cross-section. The main function of the blade mounting block 52 is to serve as a carrier for installing the cutting blade 51. A circular through-hole is opened on the blade mounting block 52, and the blade mounting block 52 can be installed in the cutter installation groove 42 by using screws and the circular through-hole.

[0054] The function of the cutting blade 51 is to cut the workpiece. The cutting blade 51 is an existing device. The cutting blade 51 is welded to the side surface of the blade mounting block 52 and is integrally connected with the blade mounting block 52. In order to improve the versatility of the tool, three cutting blades 51 are fixed on the blade mounting block 52. The shapes and specifications of the three cutting blades 51 can be different, but it is necessary to ensure that the maximum dimension of the cutting blade 51 does not exceed the dimension of the functional cavity 45, so as to ensure that the unused cutting blades 51 can be inserted into the functional cavity 45 to protect the cutting blades 51. The three cutting blades 51 are respectively fixed on the three side surfaces of the blade mounting block 52, and the cutting blades 51 protrude from the cutter installation groove 42 to process the workpiece.

[0055] Usage process of this embodiment: Before use, first fix the tool handle 1 of the tool on the tool mounting rack, then point the water spray port of the conduit for supplying coolant towards the liquid guide groove 21 on the tool shank 2, and then turn on the device. At this time, the whole tool starts to rotate, and the coolant sprayed by the conduit is sprayed onto the liquid guide groove 21. Part of the coolant falls into the temporary liquid storage tank 31 along the liquid guide groove 21, and the remaining splashed coolant initially cools down the tool shank 2 and the tool handle 1. At this time, the coolant in the temporary liquid storage tank 31 enters the liquid guide channel 32 through the liquid inlet 33 under the action of centrifugal force, and then the coolant falls into the liquid storage cavity 34 at the lower end of the liquid guide channel 32 along the liquid guide channel 32 under the action of centrifugal force. The coolant flowing in the liquid guide channel 32 dissipates heat from the tool shank 2 again. After the coolant flows into the liquid storage cavity 34, the coolant in the liquid storage cavity 34 is sprayed out through the liquid outlet 44 under the action of centrifugal force. The coolant is directly sprayed onto the blade 51 of the cutting tool 5 and the workpiece being cut, improving the cooling effect. At the same time, the sprayed coolant can also flush the chips out of the cutting hole, facilitating the discharge of the chips;

[0056] When different blades 51 need to be replaced, remove the screws on the blade mounting block 52, rotate the blade mounting block 52, and replace the appropriate blade 51 to the cutting position, which is convenient to use.

[0057] The above embodiments are only used to illustrate the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby. Any modification made on the basis of the technical solution according to the technical idea proposed by the present invention falls within the protection scope of the present invention.

Claims

1. A multi-edge metal cutting tool, characterized in that: The invention comprises a tool handle (1), a tool bar (2), a coolant guide portion (3), a tool head (4) and a cutting tool (5); the tool as a whole is mounted on a cutting tool fixture via the tool handle (1); one end of the tool bar (2) is connected to the tool handle (1), and the other end is provided with a tool head (4); the cutting tool (5) for cutting is detachably arranged on the tool head (4); a coolant guide portion (3) for guiding coolant is arranged in the tool bar (2); the coolant guide portion (3) guides the coolant to flow to the cutting tool (5), thereby cooling the cutting tool (5) and the workpiece at the cutting position.

2. A multi-edge metal cutting tool according to claim 1, characterized in that: The outer diameter of the tool handle (1) is larger than the outer diameter of the tool rod (2); a liquid guide groove (21) is provided at the connection between the tool rod (2) and the tool handle (1); a coolant guide portion (3) is provided in the tool rod (2) with one end close to the liquid guide groove (21); and coolant flows into the coolant guide portion (3) through the liquid guide groove (21).

3. A multi-edge metal cutting tool according to claim 1, characterized in that: The coolant guide portion (3) comprises a temporary liquid storage tank (31) and a liquid guide tank flow channel (32); the temporary liquid storage tank (31) is arranged on one end of the tool rod (2) close to the tool handle (1); the liquid guide tank flow channel (32) is arranged in the tool rod (2); and the liquid inlet (33) of the liquid guide tank flow channel (32) is connected to the temporary liquid storage tank (31).

4. A multi-edge metal cutting tool according to claim 3, characterized in that: The liquid guide groove flow channel (32) is spiral, and the spiral direction of the liquid guide groove flow channel (32) is opposite to the rotation direction of the tool as a whole.

5. A multi-edge metal cutting tool according to claim 3, characterized in that: A liquid storage chamber (34) is provided at one end of the liquid guide groove flow channel (32) close to the cutter head (4); the liquid storage chamber (34) is arranged inside the cutter rod (2); and the coolant guided by the liquid guide groove flow channel (32) is stored in the liquid storage chamber (34).

6. A multi-edge metal cutting tool according to claim 1, characterized in that: The cutter head (4) comprises a plurality of guide grooves (41) and a cutter installation groove (42) arranged in the guide grooves (41); the guide grooves (41) are arranged at intervals on the arc surface of the cutter head (4); the cutter installation groove (42) is arranged on the side of the guide groove (41); and the cutting knife (5) is detachably installed in the cutter installation groove (42).

7. A multi-edge metal cutting tool according to claim 6, characterized in that: A liquid outlet (44) is provided in the guide groove (41), and the liquid outlet (44) is communicated with a liquid storage chamber (34) in the coolant guide portion (3), and the coolant in the liquid storage chamber (34) flows onto the cutting blade (5) through the liquid outlet (44).

8. A multi-edge metal cutting tool according to claim 6, characterized in that: A functional cavity (45) is provided on the side of the cutter installation groove (42) perpendicular to the cutter installation groove (42), and a blade (51) in the cutting knife (5) is placed in the functional cavity (45).

9. The multi-edge metal cutting tool according to claim 1, characterized in that: The cutting knife (5) comprises a plurality of blades (51) and a blade mounting block (52); the plurality of blades (51) are arranged on the blade mounting block (52); and the blade mounting block (52) is detachably arranged in a cutting knife mounting groove (42) in the cutter head (4).

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