A disc milling cutter for high-speed milling of large surfaces

Abstract

The present invention discloses a disc milling cutter for high-speed milling of large planes, comprising a disc milling cutter body, the outer side of the disc milling cutter body having a cutter groove, the inner wall of the cutter groove being provided with a blade for cutting chips, and the disc milling cutter body being provided with a cutting fluid discharge unit; the cutting fluid discharge unit comprises a first liquid storage rack and a second liquid storage rack installed on the disc milling cutter body, the liquid storage racks one and two being used to store cutting fluid, and the disc milling cutter body being provided with a plurality of groups of liquid inlet holes and liquid outlet holes. The present invention allows the cutting fluid to move into the cutter groove to contact each blade, thereby taking away a large amount of heat from the cutting area, thereby reducing the cutting temperature, and the cutting fluid penetrates between the tool, the chips and the workpiece to form a lubricating film, thereby reducing the friction between the tool and the workpiece, reducing cutting deformation, inhibiting the growth of built-up edge and scale, improving the finish and precision of the processed surface, and avoiding the difficulty of the cutting fluid contacting the blade due to the large diameter of the disc milling cutter body.

Description

Technical Field

[0001] The invention relates to the technical field of milling cutters, in particular to a disc milling cutter used for high-speed milling of large planes. Background Art

[0002] A milling cutter is a rotating cutting tool used to remove materials in milling processing, wherein the milling cutter contacts the workpiece and generates cutting force through high-speed rotation, thereby removing excess material from the workpiece to achieve the desired size and shape. Among milling cutters, there is also a disc milling cutter, also known as a disc milling cutter, which is a widely used tool in milling processing. In the rough processing process of the integral blade disk, the disc milling cutter needs to remove a large amount of material and the slot size is large, so the effective cutting edge of the required tool is longer. This further reflects the advantages of the disc milling cutter in material removal. In the case where the material to be processed is particularly large, in order to improve the processing efficiency, a disc milling cutter with a larger diameter is usually selected. The larger milling cutter diameter can cover a larger processing area, thereby completing a larger area of ​​processing tasks at one time, significantly improving the processing efficiency. The diameter specifications of standard disc milling cutters usually range from 50mm to 250mm, while the diameter specifications of special disc milling cutters may be larger, ranging from 300mm to 600mm or even larger. In practical applications, the appropriate milling cutter diameter can be selected according to the size of the workpiece, the capacity of the machine tool, and the requirements of processing accuracy and efficiency.

[0003] Since the diameter of the disc milling cutter is relatively large, when the cutting fluid cannot cover the entire cutting position, it may cause problems such as excessively high local temperature in the cutting area, increased tool wear, and decreased machining accuracy. In addition, when the metal being cut is relatively soft, it is easy to adhere to the disc milling cutter during the cutting process. This phenomenon is usually called "sticking the cutter". Sticking the cutter not only reduces the machining efficiency, but may also have a negative impact on the machining quality and tool life. During the cutting process, a large amount of heat is generated due to the friction between metals, causing the temperature of the cutting area to rise. At high temperatures, soft metals are more likely to chemically react or physically adhere to the tool material. Based on this, a new disc milling cutter is proposed. Summary of the invention

[0004] The object of the present invention is to provide a disc milling cutter for high-speed milling of large planes to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a disc milling cutter for high-speed milling of large planes, comprising a disc milling cutter body, the outer side of the disc milling cutter body having a tool groove, the inner wall of the tool groove being provided with a blade for chip cutting, and a cutting fluid discharge unit being further provided on the disc milling cutter body;

[0006] The cutting fluid discharge unit includes a liquid storage frame 1 and a liquid storage frame 2 installed on the disc milling cutter body, the liquid storage frame 1 and the liquid storage frame 2 are used to accumulate cutting fluid, the disc milling cutter body is provided with a plurality of groups of liquid inlet holes and liquid outlet holes, the liquid inlet holes and the liquid outlet holes are connected, the liquid inlet holes are connected to the space between the liquid storage frame 1 and the liquid storage frame 2, and the liquid outlet holes are connected to the tool groove, and are used to discharge the cutting fluid into the tool groove.

[0007] Furthermore, an annular groove is provided at the upper end of the disc milling cutter body, and the liquid reservoir frame 1 and the liquid reservoir frame 2 are installed in the annular groove. The upper end surfaces of the liquid reservoir frame 1 and the liquid reservoir frame 2 have a circular gap. The upper ends of the liquid reservoir frame 1 and the liquid reservoir frame 2 are provided with a matching ring, and the lower end of the matching ring has an annular cavity, and the cavity extends between the liquid reservoir frame 1 and the liquid reservoir frame 2, which is used to inject cutting fluid between the liquid reservoir frame 1 and the liquid reservoir frame 2. The upper end of the matching ring is provided with a liquid inlet, and when the liquid reservoir frame 1 and the liquid reservoir frame 2 rotate with the disc milling cutter body, the matching ring remains stationary.

[0008] Furthermore, the first liquid storage frame and the second liquid storage frame are respectively fitted with the inner walls on both sides of the annular groove, and a layer of rubber sealing ring is provided at the position where the two are fitted.

[0009] Furthermore, a dredging unit is provided in the liquid inlet and outlet, and the dredging unit includes an elastic metal shaft that can be extended and retracted along the liquid inlet and outlet, and the outer walls of the elastic metal shaft near the two ends are respectively sleeved with a limit ring 1 and a limit ring 2, and the outer ends of the liquid inlet and outlet are respectively provided with a liquid inlet outer cavity and a liquid outlet outer cavity, and the liquid inlet outer cavity and the liquid outlet outer cavity are respectively opened on the inner wall of the annular groove and the inner wall of the tool groove, and the liquid inlet outer cavity and the liquid outlet outer cavity are respectively connected with the liquid inlet and outlet, and the limit ring 1 and the limit ring 2 are respectively fixed in the liquid inlet outer cavity and the liquid outlet outer cavity, and the lower end of the mating ring is fixed with an inclined plate for squeezing the elastic metal shaft, and when the disc milling cutter body rotates, the elastic metal shaft and the inclined plate are intermittently squeezed.

[0010] Furthermore, an inner support ring is fixed on the outer side of the elastic metal shaft, and the inner support ring is sleeved in the liquid outlet. The inner support ring is hollow for the cutting fluid to pass through. A support spring is fixed between the inner support ring and the second limit ring, and the support spring is sleeved in the liquid outlet. The support spring is used to reset the elastic metal shaft.

[0011] Furthermore, the first limiting ring and the second limiting ring are both hollowed out for the cutting fluid to pass through, and the positions where the first limiting ring and the second limiting ring contact the elastic metal shaft are smooth.

[0012] Furthermore, a plurality of circumferentially distributed spacers are fixed to one end of the elastic metal shaft extending from the liquid outlet, and when the elastic metal shaft is not squeezed, the spacers are in contact with the second limiting ring.

[0013] Furthermore, the liquid outlet hole extends outwardly in an inclined manner when viewed from above, and the outer end of the liquid outlet hole points to the blade.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0015] 1. The cutting fluid moves into the tool groove and contacts each blade, taking away a large amount of heat from the cutting area, thereby reducing the cutting temperature. The cutting fluid penetrates between the tool, chips and workpiece to form a lubricating film, reducing the friction between the tool and the workpiece, reducing cutting deformation, inhibiting the growth of built-up edge and scale, improving the finish and precision of the machined surface, and avoiding the difficulty of contact between the cutting fluid and the blade due to the large diameter of the disc milling cutter body.

[0016] 2. The liquid outlet is tilted and points toward the blade. When the cutting fluid moves outward, the cutting fluid can more effectively contact the blade, thus avoiding a sharp increase in the temperature of the blade.

[0017] 3. A dredging unit is set up, and the elastic metal shaft is extended and retracted at intervals to achieve the dredging function and prevent chips from entering the liquid outlet hole; secondly, the elastic metal shaft and the spacer can also push the chips at the outer end outward to avoid too many chips making it difficult for the cutting fluid to move outward, and the movement range of the cutting fluid moving outward can be increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

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

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

[0021] Figure 3 It is a schematic diagram of a partial cross-sectional structure of a cutting fluid discharge unit of the present invention;

[0022] Figure 4 It is a schematic diagram of the partial cross-sectional structure of the disc milling cutter body of the present invention;

[0023] Figure 5 It is a schematic diagram of the local structure of the disc milling cutter body of the present invention;

[0024] Figure 6 The present invention Figure 5 A is a schematic diagram of the partially enlarged structure of the middle part;

[0025] Figure 7 It is a schematic diagram of the liquid outlet orientation structure of the present invention.

[0026] In the figure: 1. disc milling cutter body; 2. cutter groove; 3. blade; 4. cutting fluid discharge unit; 41. annular groove; 42. liquid inlet hole; 421. liquid inlet outer cavity; 43. liquid outlet hole; 431. liquid outlet outer cavity; 44. liquid storage rack 1; 45. liquid storage rack 2; 46. matching ring; 47. liquid inlet; 5. dredging unit; 51. inclined plate; 52. limit ring 1; 53. limit ring 2; 54. elastic metal shaft; 55. inner support ring; 56. support spring; 57. spacer. DETAILED DESCRIPTION

[0027] 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.

[0028] See also Figure 1-Figure 7 The present invention provides a technical solution: when the diameter of the disc milling cutter body 1 is large and the cutting fluid cannot cover all the cutting positions, it may cause problems such as excessively high local temperature in the cutting area, increased tool wear, and decreased machining accuracy. Based on this, a disc milling cutter for high-speed milling of large planes is proposed, including a disc milling cutter body 1, a tool groove 2 is provided on the outer side of the disc milling cutter body 1, a blade 3 for chip cutting is installed on the inner wall of the tool groove 2, and a cutting fluid discharge unit 4 is also installed on the disc milling cutter body 1. The cutting fluid discharge unit 4 is used to discharge the cutting fluid, and discharge it from different positions of the disc milling cutter body 1. When cutting metal, the position of the cutting fluid injection is adjusted differently. In addition, when the disc milling cutter body 1 is cutting, the cutting fluid can cover all the cutting positions;

[0029] The cutting fluid discharge unit 4 includes a liquid storage frame 1 44 and a liquid storage frame 2 45 installed on the disc milling cutter body 1. The space between the liquid storage frame 1 44 and the liquid storage frame 2 45 is used to accumulate cutting fluid. The disc milling cutter body 1 is provided with a plurality of groups of liquid inlet holes 42 and liquid outlet holes 43. The liquid inlet holes 42 and the liquid outlet holes 43 are connected. The liquid inlet holes 42 are connected to the space between the liquid storage frame 1 44 and the liquid storage frame 2 45. The liquid outlet hole 43 is connected to the tool groove 2, and is used to discharge the cutting fluid into the tool groove 2, accumulate the cutting fluid between the liquid storage frame 1 44 and the liquid storage frame 2, and then move outward from the plurality of groups of liquid inlet holes 42 and liquid outlet holes 43, so that the cutting fluid moves to different positions of the disc milling cutter body 1 to achieve contact with the cutting position, thereby avoiding excessive temperature at a local position. In particular, when cutting soft metal, the temperature rise may easily cause the soft metal to adhere to the disc milling cutter body 1, thereby affecting subsequent cutting.

[0030] The upper end of the disc milling cutter body 1 is provided with an annular groove 41, and the liquid storage frame 1 44 and the liquid storage frame 2 45 are installed in the annular groove 41. The upper end surfaces of the liquid storage frame 1 44 and the liquid storage frame 2 45 have a circular gap. The upper ends of the liquid storage frame 1 44 and the liquid storage frame 2 45 are provided with a matching ring 46, and the lower end of the matching ring 46 has an annular cavity, and the cavity extends between the liquid storage frame 1 44 and the liquid storage frame 2 45, which is used to infuse the cutting fluid between the liquid storage frame 1 44 and the liquid storage frame 2 45. The upper end of the matching ring 46 is provided with a liquid inlet 47, and the liquid storage frame 1 44 and the liquid storage frame 2 45 are connected with the disc milling cutter body 1 During rotation, the matching ring 46 remains stationary. The cutting fluid moves from the pipeline for transmission and enters the matching ring 46. The pipeline for transmitting the cutting fluid needs to be rigid to prevent the matching ring 46 from rotating due to the friction force. In addition, after the cutting fluid moves to the matching ring 46, it moves from the matching ring 46 to between the liquid storage frame 1 44 and the liquid storage frame 2 45, and then moves out from the liquid inlet hole 42 and the liquid outlet hole 43. It is relatively in a closed state. Under the impact of the pipeline for transmitting the cutting fluid, the cutting fluid that moves to the cutting fluid discharge unit 4 can be discharged from the liquid outlet hole 43, thereby improving the discharge efficiency.

[0031] It should be noted that the first liquid storage frame 44 and the second liquid storage frame 45 are separately arranged to clamp the inclined plate 51 to keep the matching ring 46 stable and avoid deviation.

[0032] It should also be noted that the cutting fluid is discharged from the outlet hole 43 and is only located in the tool groove 2, which prevents the cutting fluid from contaminating the entire piece of metal being cut, facilitates observation of the cutting position, and reduces the occurrence of dangerous accidents such as tool collision or workpiece detachment.

[0033] The first liquid storage frame 44 and the second liquid storage frame 45 are respectively fitted with the inner walls of the inner and outer sides of the annular groove 41, and a layer of rubber sealing ring is provided at the fitting position to achieve sealing effect and prevent the cutting fluid from moving outward through the gap under the action of pressure.

[0034] During the cutting process, the generated chips easily enter the cutter groove 2 of the disc milling cutter body 1. When the chips are small enough, there is a possibility that the liquid outlet hole 43 is blocked. A dredging unit 5 is also provided in the liquid inlet hole 42 and the liquid outlet hole 43. The dredging unit 5 includes an elastic metal shaft 54 ​​that can be extended and retracted along the liquid inlet hole 42 and the liquid outlet hole 43. The outer walls of the elastic metal shaft 54 ​​near both ends are respectively sleeved with a limit ring 1 52 and a limit ring 2 53. The outer ends of the liquid inlet hole 42 and the liquid outlet hole 43 are respectively provided with a liquid inlet outer cavity 421 and The liquid outlet outer chamber 431, the liquid inlet outer chamber 421 and the liquid outlet outer chamber 431 are respectively arranged on the inner wall of the annular groove 41 and the inner wall of the cutter groove 2, the liquid inlet outer chamber 421 and the liquid outlet outer chamber 431 are respectively connected with the liquid inlet hole 42 and the liquid outlet hole 43, the limiting ring 1 52 and the limiting ring 2 53 are respectively fixed in the liquid inlet outer chamber 421 and the liquid outlet outer chamber 431, and the lower end of the matching ring 46 is fixed with an inclined plate 51 for squeezing the elastic metal shaft 54. When the disc milling cutter body 1 rotates, the elastic metal shaft 54 ​​and the inclined plate 51 are intermittently squeezed.

[0035] An inner support ring 55 is fixed to the outer side of the elastic metal shaft 54. The inner support ring 55 is sleeved into the liquid outlet 43. The inner support ring 55 is hollow and is used for the cutting fluid to pass through. A support spring 56 is fixed between the inner support ring 55 and the second limiting ring 53. The support spring 56 is sleeved into the liquid outlet 43. The support spring 56 is used to reset the elastic metal shaft 54. The elastic metal shaft 54 ​​is limited by the first limiting ring 52 and the second limiting ring 53. When the elastic metal shaft 54 ​​is squeezed by the inclined plate 51, it can be squeezed outward and the support spring 56 is squeezed. Then, it is restored under the action of the support spring 56. The elastic metal shaft 54 ​​is originally in a bent state. Due to its elasticity and limitation, it can extend outward from the liquid outlet 43 and then reset, so that the elastic metal shaft 54 ​​can achieve telescopic effect during the rotation of the disc milling cutter body 1. It should be noted that the diameter of the disc milling cutter body 1 is relatively large, so its rotation speed is relatively slow. The elastic metal shaft 54 ​​extending outward can ensure recovery under the action of the supporting spring 56, and achieve telescopic movement, so as to avoid chips bouncing into the liquid outlet 43 and causing jamming during the cutting process, and maintain a clearing effect. In addition, the limit ring 1 52 and the limit ring 2 53 are separated, and the clearing unit 5 can be taken out and replaced to ensure that the disc milling cutter body 1 is in an optimal cutting state.

[0036] The limiting ring 1 52 and the limiting ring 2 53 are both hollowed out for the cutting fluid to pass through. The contact positions of the limiting ring 1 52 and the limiting ring 2 53 with the elastic metal shaft 54 ​​are smooth, so that the elastic metal shaft 54 ​​can ensure the telescopic effect and reduce friction. In addition, the limiting ring 1 52 and the limiting ring 2 53 avoid blocking the movement of the cutting fluid.

[0037] One end of the elastic metal shaft 54 ​​extending from the liquid outlet 43 is fixed with multiple spacers 57 distributed in a circle. When the elastic metal shaft 54 ​​is not squeezed, the spacer 57 is in contact with the limiting ring 2 53. The spacer 57 can also expand and contract with the elastic metal shaft 54, thereby dispersing the cutting fluid and making the cutting fluid contact with the blade 3 over a large range.

[0038] The liquid outlet hole 43 extends outwardly in an inclined manner when viewed from above, and the outer end of the liquid outlet hole 43 points to the blade 3, so that the cutting fluid contacts the blade 3 to the greatest extent.

[0039] The working principle of the present invention is as follows: the cutting fluid is introduced into the liquid inlet 47, wherein the cutting fluid is transported from the pipeline, the end of the pipeline is clamped with the liquid inlet 47, and the pipeline is set to be rigid, so that the matching ring 46 is relatively fixed and will not rotate with the rotation of the disc milling cutter body 1. The cutting fluid entering the matching ring 46 moves to between the liquid storage frame 1 44 and the liquid storage frame 2 45, and moves from the liquid inlet hole 42 and the liquid outlet hole 43 under the action of gravity and the centrifugal force generated by the rotation, so that the cutting fluid moves into the tool groove 2, and in the process of the disc milling cutter body 1 cutting, it is in contact with each blade 3. Contact can effectively take away a large amount of heat from the cutting area, thereby reducing the cutting temperature, which is crucial for reducing thermal wear of the tool, preventing deformation of the workpiece due to thermal expansion, and inhibiting thermal cracks that may occur during the cutting process. The cutting fluid penetrates between the tool, chips and workpiece to form a lubricating film, which helps to reduce the friction between the tool and the workpiece, thereby reducing the cutting force. Good lubrication can reduce cutting deformation, inhibit the growth of built-up edge and scale, thereby improving the finish and precision of the machined surface, and avoiding the difficulty of contact between the cutting fluid and the blade 3 due to the large diameter of the disc milling cutter body 1.

[0040] The liquid outlet 43 is inclined to point toward the blade 3 , so that when the cutting liquid moves outward, the cutting liquid can more effectively contact the blade 3 , thereby preventing the temperature of the blade 3 from rising sharply.

[0041] In addition, by providing the dredging unit 5, during the rotation of the disc milling cutter body 1, the matching ring 46 at the upper end thereof is prevented from rotating under the action of the cutting fluid delivery pipeline, thereby realizing the extrusion of the interval between the elastic metal shaft 54 ​​and the inclined plate 51. The extruded elastic metal shaft 54 ​​pushes the supporting spring 56 to make the spacer 57 move outward, and then the elastic metal shaft 54 ​​is reset under the action of the supporting spring 56, realizing the expansion and contraction of the interval of the elastic metal shaft 54. When chips accumulate in the tool groove 2 and are difficult to be thrown off, there is a possibility of the outlet hole 4 3. Even if there is no blockage, the discharge efficiency of the liquid outlet 43 will be reduced. The elastic metal shaft 54 ​​is extended and retracted to achieve the function of unblocking and prevent the chips from entering the liquid outlet 43. Secondly, the elastic metal shaft 54 ​​and the spacer 57 can also push the chips at the outer end outward to avoid too many chips making it difficult for the cutting fluid to move outward. The spacer 57 also has the function of dispersing the cutting fluid, and the movement range of the cutting fluid moving outward can be increased. The spacer 57 pushes outward at intervals, so the spacer 57 will not block the liquid outlet 43.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A disc milling cutter for high-speed milling of large surfaces, comprising a disc milling cutter body (1), the outer side of the disc milling cutter body (1) having a cutter groove (2), the inner wall of the cutter groove (2) being provided with a blade (3) for chip cutting, characterized in that: The disc milling cutter body (1) is also provided with a cutting fluid discharge unit (4); The cutting fluid discharge unit (4) comprises a first liquid storage frame (44) and a second liquid storage frame (45) mounted on the disc milling cutter body (1); the first liquid storage frame (44) and the second liquid storage frame (45) are used to store cutting fluid; the disc milling cutter body (1) is provided with a plurality of groups of liquid inlet holes (42) and liquid outlet holes (43); the liquid inlet holes (42) and the liquid outlet holes (43) are connected; the liquid inlet holes (42) are connected to the space between the first liquid storage frame (44) and the second liquid storage frame (45); the liquid outlet holes (43) are connected to the tool groove (2) and are used to discharge the cutting fluid into the tool groove (2); The upper end of the disc milling cutter body (1) is provided with an annular groove (41) arranged in an annular shape. The first liquid storage frame (44) and the second liquid storage frame (45) are installed in the annular groove (41). The upper end surfaces of the first liquid storage frame (44) and the second liquid storage frame (45) have annular gaps. The upper ends of the first liquid storage frame (44) and the second liquid storage frame (45) are provided with matching rings (46). The lower ends of the matching rings (46) have an annular cavity, and the cavity extends between the first liquid storage frame (44) and the second liquid storage frame (45) for injecting cutting fluid between the first liquid storage frame (44) and the second liquid storage frame (45). The upper end of the matching ring (46) is provided with a liquid inlet (47). When the first liquid storage frame (44) and the second liquid storage frame (45) rotate with the disc milling cutter body (1), the matching ring (46) remains stationary. A dredging unit (5) is further provided in the liquid inlet hole (42) and the liquid outlet hole (43). The dredging unit (5) comprises an elastic metal shaft (54) that can be extended and retracted along the liquid inlet hole (42) and the liquid outlet hole (43). The outer walls of the elastic metal shaft (54) near both ends are respectively sleeved with a first limiting ring (52) and a second limiting ring (53). The outer ends of the liquid inlet hole (42) and the liquid outlet hole (43) are respectively provided with a liquid inlet outer cavity (421) and a liquid outlet outer cavity (431). The liquid inlet outer cavity (421) and the liquid outlet outer cavity (431) are respectively opened. The inner wall of the annular groove (41) and the inner wall of the cutter groove (2) are arranged. The liquid inlet outer cavity (421) and the liquid outlet outer cavity (431) are respectively connected to the liquid inlet hole (42) and the liquid outlet hole (43). The first limiting ring (52) and the second limiting ring (53) are respectively fixed in the liquid inlet outer cavity (421) and the liquid outlet outer cavity (431). The lower end of the matching ring (46) is fixed with an inclined plate (51) for squeezing the elastic metal shaft (54). When the disc milling cutter body (1) rotates, the elastic metal shaft (54) and the inclined plate (51) are intermittently squeezed.

2. The disc milling cutter for large plane high-speed milling according to claim 1, characterized in that: The first liquid storage frame (44) and the second liquid storage frame (45) are respectively fitted with the inner walls on both sides of the annular groove (41), and a layer of rubber sealing ring is provided at the position where the two are fitted.

3. The disc milling cutter for large plane high-speed milling according to claim 1, characterized in that: An inner support ring (55) is fixed to the outer side of the elastic metal shaft (54), and the inner support ring (55) is sleeved into the liquid outlet hole (43). The inner support ring (55) is hollow and is used for cutting fluid to pass through. A support spring (56) is fixed between the inner support ring (55) and the second limiting ring (53), and the support spring (56) is sleeved into the liquid outlet hole (43). The support spring (56) is used to reset the elastic metal shaft (54).

4. The disc milling cutter for large plane high-speed milling according to claim 1, characterized in that: The first limiting ring (52) and the second limiting ring (53) are both hollow and are used for the cutting fluid to pass through. The positions where the first limiting ring (52) and the second limiting ring (53) contact the elastic metal shaft (54) are smooth.

5. The disc milling cutter for large plane high-speed milling according to claim 1, characterized in that: A plurality of circumferentially distributed spacers (57) are fixed to one end of the elastic metal shaft (54) extending from the liquid outlet hole (43); when the elastic metal shaft (54) is not squeezed, the spacers (57) are in contact with the second limiting ring (53).

6. The disc milling cutter for large plane high-speed milling according to claim 1, characterized in that: The liquid outlet hole (43) extends outwardly in an inclined manner when viewed from above, and the outer end of the liquid outlet hole (43) points to the blade (3).

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