Adjustable fork-shaped blade root milling cutter and machining equipment

Abstract

The invention relates to the technical field of machining, in particular to an adjustable fork-shaped blade root milling cutter and machining equipment. The cutter comprises a disc cutter body, a cutter holder, a blade and a pressing block, a plurality of mounting notches are formed in the side face of the disc cutter body, and a first limiting structure is arranged on one side wall of the disc cutter body; the tool apron is located in the mounting notch, the tool apron is provided with a first abutting working face and a first matching face, the first matching face is provided with a second limiting structure, the second limiting structure is in sliding fit with the first limiting structure, and the first limiting structure further forms mechanical limiting on the second limiting structure in the radial direction of the disc tool body; the blade is connected to the tool apron; and the pressing block is located in the mounting notch and movably connected with the disc cutter body, the pressing block is provided with a second abutting working face, and when the pressing block moves, the second abutting working face and the first abutting working face can have different overlapping areas, so that different abutting forces are given to the cutter holder. The structure is simple, the blade can be axially adjusted, and the machining quality can be guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of machining, and particularly relates to an adjustable fork-shaped blade root milling cutter and a machining device. Background Art

[0002] In recent years, with the rapid development of fields such as aerospace, gas turbines, and energy equipment, the fork-shaped blade root, as a key structure for connecting the blade and the disk, its machining accuracy directly affects the efficient operation and service life of the equipment. Although traditional fork-shaped blade root milling cutters (such as welded, integral high-speed steel, or machine-clamped replaceable types) can meet the basic machining requirements, there are industry pain points in actual applications:

[0003] 1. Limited by the tool structure (large diameter and thin thickness), it is difficult to control the manufacturing tolerance of the blade groove, resulting in a large width error of the machined blade root profile, and even scrapping the workpiece; the problem of cutting width drift caused by the release of internal stress in the tool is prominent, especially in continuous machining, and the cumulative error is significant;

[0004] 2. In modern machining scenarios, dynamic interferences such as spindle runout and tool shank bending in machine tools are common. Traditional milling cutters lack a real-time compensation mechanism, resulting in large fluctuations in cutting width; the widespread application of high-hardness materials (such as nickel-based alloys and titanium alloys) places higher requirements on the wear resistance and impact resistance of the tool. Traditional blades are prone to chipping, and the service life is shortened by 30%-50%;

[0005] 3. The existing tool replacement process is complex and requires overall disassembly, making it difficult to meet the flexible production requirements of multi-variety and small-batch production; moreover, the automated production line promoted by Industry 4.0 requires the tool to have the ability to be adjusted online, while traditional fixed milling cutters rely on manual intervention and cannot achieve real-time optimization of machining parameters, becoming a bottleneck for intelligent upgrading. Summary of the Invention

[0006] This application provides an adjustable fork-shaped blade root milling cutter. By setting the tool holder as an axially adjustable structure and designing a pressing block to ensure the stability of the tool holder during machining and the convenience during the adjustment process of the tool holder, a series of problems caused by the non-adjustability of the existing milling cutter are solved.

[0007] This application is achieved through the following technical solutions:

[0008] In the first aspect, this application provides an adjustable fork-shaped blade root milling cutter, including:

[0009] A disk cutter body, on the side surface of which there are constructed a plurality of mounting notches, and a first limiting structure is provided on one side wall of the disk cutter body;

[0010] The tool holder is located within the mounting notch. The tool holder has a first abutting working surface and a first mating surface. A second limiting structure is provided on the first mating surface, and the second limiting structure is in sliding fit with the first limiting structure so that the tool holder can slide within the mounting notch in a direction parallel to the axial direction of the disk cutter body. Among them, the first limiting structure also forms a mechanical limit for the second limiting structure in the radial direction of the disk cutter body;

[0011] The blade is connected to the tool holder;

[0012] The pressing block is located within the mounting notch and is movably connected to the disk cutter body so that the pressing block can move in the radial direction of the disk cutter body. The pressing block has a second abutting working surface. Among them, when the pressing block moves, the second abutting working surface and the first abutting working surface can have different overlapping areas, thereby applying different abutting forces to the tool holder.

[0013] For the adjustable fork-shaped blade root milling cutter provided in the present application, the disk cutter body forms a sliding fit with the second limiting structure on the tool holder through the first limiting structure, so that the tool holder can slide in a direction parallel to the axial direction of the disk cutter body, and then the axial adjustment of the tool holder is realized. At the same time, through the mechanical limit of the second limiting structure to the first limiting structure, the radial limit of the tool holder can be realized in the radial direction of the disk cutter body. Then, the pressing and relaxation of the tool holder are realized through different overlapping areas between the first abutting working surface on the pressing block and the second abutting working surface on the tool holder. Combining the radial limiting effects of the first limiting structure and the second limiting structure, the tool holder has a relatively high relative stability with the disk cutter body during the machining process, ensuring the machining quality. During adjustment, only by operating the pressing block to move relative to the disk cutter body can the axial adjustment of the tool holder be carried out, which has good operation convenience.

[0014] In some alternative embodiments, the first limiting structure and the second limiting structure are arranged as tooth-shaped structures that can cooperate with each other.

[0015] In some alternative embodiments, a screw rod is in threaded fit with the disk cutter body so that the screw rod can move in a direction parallel to the axial direction of the disk cutter body. Among them, the tool holder is in transmission fit with the screw rod to act synchronously under the drive of the screw rod.

[0016] In some alternative embodiments, a circular notch is formed on one side wall of the mounting notch, and the screw rod is in threaded fit with the inner wall of the circular notch. Among them, a limiting groove adapted to accommodate the part of the screw rod protruding from the circular notch is formed on the tool holder, so that the tool holder acts along with the movement of the screw rod.

[0017] In some alternative embodiments, an anti - detachment groove is formed on the first abutting working surface of the tool holder, and an anti - detachment member is elastically connected in the anti - detachment groove. The anti - detachment member abuts against the second abutting working surface of the pressing block under the action of elastic force.

[0018] In some alternative embodiments, the anti - detachment member is configured as a cap - type pin shaft. A helical spring is sleeved on the cap - type pin shaft and the cap - type pin shaft is elastically connected to the tool holder through the helical spring.

[0019] In some alternative embodiments, a locking through - hole is formed on the pressing block, and a locking member is in threaded fit in the locking through - hole. One end of the locking member passes through the locking through - hole and is in threaded fit with the disc cutter body. Wherein, the internal thread of the locking through - hole has a reverse helix direction to the internal thread of the disc cutter body.

[0020] In some alternative embodiments, the locking member is configured as a double - headed screw.

[0021] In some alternative embodiments, the blades on adjacent tool holders are arranged in opposite directions.

[0022] In a second aspect, the present application provides a processing device, including any one of the adjustable fork - shaped blade root milling cutters as described in the first aspect.

[0023] The processing device provided by the present application adopts the adjustable fork - shaped blade root milling cutter provided in the first aspect, which can improve the processing quality and reduce the fluctuation of the cutting width. Due to the convenience of tool holder adjustment, the overall workpiece processing efficiency can also be improved.

[0024] Compared with the prior art, the present application has the following advantages and beneficial effects:

[0025] 1. For the adjustable fork - shaped blade root milling cutter provided by the present application, the disc cutter body forms a sliding fit with the second limiting structure on the tool holder through the first limiting structure, so that the tool holder can slide along the axial direction parallel to the disc cutter body, thereby realizing the axial adjustment of the tool holder. At the same time, through the mechanical limit of the second limiting structure on the first limiting structure, the radial limit of the tool holder can be realized in the radial direction of the disc cutter body. Then, by the different overlapping areas between the first abutting working surface on the pressing block and the second abutting working surface on the tool holder, the pressing and relaxation of the tool holder are realized. Combining the radial limiting effects of the first limiting structure and the second limiting structure, the tool holder has a high relative stability with the disc cutter body during the processing, ensuring the processing quality. During adjustment, only by operating the movement of the pressing block relative to the disc cutter body can the axial adjustment of the tool holder be carried out, which has good operation convenience.

[0026] 2. The processing device provided by the present application adopts the adjustable fork - shaped blade root milling cutter provided by the present application, which can improve the processing quality and reduce the fluctuation of the cutting width. Due to the convenience of tool holder adjustment, the overall workpiece processing efficiency can also be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts. In the drawings:

[0028] Figure 1 is a schematic structural diagram of an adjustable fork-shaped blade root milling cutter provided by an embodiment of the present application;

[0029] Figure 2 is a partial exploded structural diagram of an adjustable fork-shaped blade root milling cutter provided by an embodiment of the present application;

[0030] Figure 3 is a partial structural diagram of a disc cutter body provided by an embodiment of the present application;

[0031] Figure 4 is a schematic structural diagram of a tool holder from a first perspective provided by an embodiment of the present application;

[0032] Figure 5 is a schematic structural diagram of a tool holder from a second perspective provided by an embodiment of the present application;

[0033] Figure 6 is a schematic structural diagram of a pressing block provided by an embodiment of the present application.

[0034] Markings in the drawings and corresponding component names:

[0035] 1 - disc cutter body, 11 - installation notch, 12 - second limiting structure, 13 - circular notch, 2 - tool holder, 21 - first limiting structure, 22 - limiting groove, 23 - anti - detachment groove, 24 - first abutting working surface, 3 - blade, 4 - pressing block, 41 - locking perforation, 42 - second abutting working surface, 5 - locking part, 6 - screw rod, 7 - anti - detachment part, 8 - helical spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] To make the purpose, technical solutions, and advantages of the present application more clearly understood, the present application will be further described in detail below in conjunction with the embodiments and the drawings. The illustrative embodiments of the present application and their descriptions are only used to explain the present application and do not limit the present application.

[0037] In the first aspect, reference can be made together to Figures 1 to 3, an embodiment of the present application provides an adjustable fork-shaped blade root milling cutter. The adjustable fork-shaped blade root milling cutter includes a disc cutter body 1, a tool holder 2, a blade 3, and a pressing block 4; a plurality of installation notches 11 are formed on the side surface of the disc cutter body 1, and a first limiting structure 21 is arranged on one side wall of the disc cutter body 1; the tool holder 2 is located in the installation notch 11, the tool holder 2 has a first pressing working surface 24 and a first mating surface, and a second limiting structure 12 is arranged on the first mating surface. The second limiting structure 12 is slidably matched with the first limiting structure 21 so that the tool holder 2 can slide in the installation notch 11 along a direction parallel to the axial direction of the disc cutter body 1. Among them, the first limiting structure 21 also forms a mechanical limit on the second limiting structure 12 in the radial direction of the disc cutter body 1; the blade 3 is connected to the tool holder 2; the pressing block 4 is located in the installation notch 11 and is movably connected to the disc cutter body 1 so that the pressing block 4 can move along the radial direction of the disc cutter body 1. The pressing block 4 has a second pressing working surface 42. Among them, when the pressing block 4 moves, the second pressing working surface 42 and the first pressing working surface 24 can have different overlapping areas, so as to give different pressing forces to the tool holder 2.

[0038] When performing axial adjustment of the blade 3, operate the pressing block 4 to change the contact area between the first pressing working surface 24 and the second pressing working surface 42, so as to reduce or cancel the pressing force of the pressing block 4 on the movement. At this time, the tool holder 2 can move in the installation notch 11 along a direction parallel to the axial direction of the disc cutter body 1, so as to realize the axial adjustment of the blade 3. After the blade 3 is adjusted in place, operate the pressing block 4 again to change the overlapping area between the first pressing working surface 24 and the second pressing working surface 42 so that the pressing block 4 forms an extrusion on the tool holder 2, so that the tool holder 2 is pressed tightly on the disc cutter body 1 again.

[0039] For the adjustable fork-shaped blade root milling cutter provided by the embodiment of the present application, the disc cutter body 1 forms a sliding fit with the second limiting structure 12 on the tool holder 2 through the first limiting structure 21, so that the tool holder 2 can slide along a direction parallel to the axial direction of the disc cutter body 1, and then the axial adjustment of the tool holder 2 is realized. At the same time, through the mechanical limit of the second limiting structure 12 on the first limiting structure 21, the radial limit of the tool holder 2 can be realized in the radial direction of the disc cutter body 1. Then, through the different overlapping areas between the first pressing working surface 24 on the pressing block 4 and the second pressing working surface 42 on the tool holder 2, the pressing and loosening of the tool holder 2 are realized. Combining the radial limiting effects of the first limiting structure 21 and the second limiting structure 12, the tool holder 2 has a high relative stability with the disc cutter body 1 during the machining process, ensuring the machining quality. During adjustment, only need to operate the pressing block 4 to move relative to the disc cutter body 1 to perform the axial adjustment of the tool holder 2, which has good operation convenience.

[0040] In some alternative embodiments, reference may be made together to Figure 3 and Figure 4 , the first limiting structure 21 and the second limiting structure 12 are arranged as a tooth-shaped structure that can cooperate with each other.

[0041] In the embodiments of the present application, the first limiting structure 21 and the second limiting structure 12 can form meshing, and the tooth-shaped structure provides multiple limits in the radial direction of the disc cutter body 1. At the same time, the multiple meshing of the tool holder 2 and the disc cutter body 1 can also ensure accurate and stable positioning of the tool holder 2 in the radial direction of the disc cutter body 1, which will be beneficial to ensuring the machining quality.

[0042] In some alternative embodiments, reference may be made to Figure 2 and Figure 3 , the disc cutter body 1 is in threaded cooperation with a screw rod 6 so that the screw rod 6 can move in a direction parallel to the axial direction of the disc cutter body 1, that is, when the screw rod 6 rotates around its own axis, the screw rod 6 can synchronously move along its own axial direction. Among them, the tool holder 2 is in transmission cooperation with the screw rod 6 to move synchronously under the drive of the screw rod 6.

[0043] In the embodiments of the present application, the tool holder 2 is driven by the screw rod 6 to perform a reciprocating movement, and the screw rod 6 is in threaded cooperation with the disc cutter body 1. The position adjustment accuracy of the screw rod 6 on the disc cutter body 1 is relatively high, which will be beneficial to improving the positioning accuracy of the tool holder 2 on the disc cutter body 1; compared with directly operating the tool holder 2 to change its position, the adjustment is more convenient when driven by the screw rod 6, which will be beneficial to improving the overall machining efficiency of the workpiece.

[0044] In some alternative embodiments, reference may be made to Figures 2 to 4 , a circular notch 13 is provided on one side wall of the installation notch 11, and the screw rod 6 is in threaded cooperation with the inner wall of the circular notch 13. Among them, a limiting groove 22 adapted to accommodate the part of the screw rod 6 exposed from the circular notch 13 is provided on the tool holder 2, so that the tool holder 2 moves with the movement of the screw rod 6, that is, it means that both ends of the screw rod 6 can be in contact with the groove wall of the limiting groove 22 on the tool holder 2, and at the same time the screw rod 6 can rotate in the limiting groove 22. Therefore, when the screw rod 6 rotates in the circular notch 13, it can push the tool holder 2 forward and backward to realize the axial adjustment of the tool holder 2. Such a setting can avoid the configuration of transmission parts or transmission mechanisms between the screw rod 6 and the tool holder 2, which is beneficial to the simplification of the structure, reduces the manufacturing cost, and is conducive to fault analysis during use. Among them, there is no tight contact between the screw rod 6 and the groove wall of the limiting groove 22, that is, there may be a relative displacement between the tool holder 2 and the screw rod 6. However, as described above, when both the first limiting structure 21 and the second limiting structure 12 are tooth-shaped structures, multiple meshing is formed between the tool holder 2 and the disc cutter body 1, having a large contact area. Under the pressing action of the pressing block 4, a large contact pressure is formed between the tool holder 2 and the disc cutter body 1, so that a large frictional force is formed between the tool holder 2 and the disc cutter body 1, thereby realizing the axial positioning of the tool holder 2. At this time, on the one hand, the screw rod 6 plays an adjusting role, and on the other hand, it prevents the tool holder 2 from excessive axial displacement and resulting in the situation of the tool holder 2 falling off when the pressing block 4 may become loose.

[0045] In some alternative embodiments, reference may be made together to Figure 2 and Figure 5 , an anti - detachment groove 23 is formed on the first abutting working surface 24 of the tool holder 2, and an anti - detachment member 7 is elastically connected in the anti - detachment groove 23. The anti - detachment member 7 abuts against the second abutting working surface 42 of the pressing block 4 under the action of elastic force.

[0046] In the embodiment of the present application, when the pressing block 4 is operated, the pressing force of the pressing block 4 on the tool holder 2 is released. At this time, the anti - detachment member 7 still abuts against the pressing block 4 under the action of elasticity, and the tool holder 2 also abuts against the disc cutter body 1 to a certain extent under the action of elasticity and will not fall off from the installation notch 11. In this way, it is convenient to rotate the screw 6 to realize the axial adjustment of the tool holder 2; of course, the anti - detachment member 7 can also provide a certain positioning dynamic compensation, that is, the pressing force of the pressing block 4 on the tool holder 2 may have a certain jump under high - frequency vibration. Through the setting of the anti - detachment member 7, the dynamic compensation of the pressing force can be carried out through elastic action, which is beneficial to improving the stability of the blade 3 during the processing and is beneficial to ensuring the machining accuracy of the workpiece.

[0047] In some alternative embodiments, the anti - detachment member 7 is configured as a cap - type pin shaft. Among them, the anti - detachment groove 23 on the tool holder 2 is set as a corresponding counterbore blind hole, and the cap - type pin shaft is sleeved with a helical spring 8 and elastically connected to the tool holder 2 through the helical spring 8.

[0048] In the embodiment of the present application, the cooperation between the head of the cap - type pin shaft and the large - diameter section of the anti - detachment groove 23 can play a radial positioning role for the cap - type pin shaft to avoid the cap - type pin shaft from being deflected.

[0049] In some alternative embodiments, reference may be made together to Figure 2 and Figure 6 , a locking through - hole 41 is formed on the pressing block 4, and a locking member 5 is in threaded cooperation in the locking through - hole 41. One end of the locking member 5 passes through the locking through - hole 41 and is in threaded cooperation with the disc cutter body 1. Among them, the internal thread of the locking through - hole 41 has a reverse helix direction to the internal thread of the disc cutter body 1.

[0050] In the embodiment of the present application, the shape of the pressing block 4 is specifically a structure in which one side of a cube is cut into a wedge surface, and this wedge surface serves as the second pressing working surface. Correspondingly, the first pressing working surface on the tool holder 2 is also a wedge surface. The double - thread design on the locking member 5 enables the locking member 5 to accelerate the movement of the pressing block 4 when rotated, so as to realize the rapid adjustment of the tool holder 2, which is beneficial to improving the processing efficiency. In actual implementation, the locking member 5 can be configured as a double - headed screw 6, and an internal hexagonal groove is formed at the end of the double - headed screw 6 located in the locking through - hole 41 for wrench operation.

[0051] In some alternative embodiments, the blades 3 on adjacent tool holders 2 are arranged in a reverse direction.

[0052] In the embodiments of the present application, the reverse arrangement means that in the axial direction of the disk cutter body 1, if the blade 3 is used to process the workpiece on the left side of the disk cutter body 1, the adjacent blade 3 is used to process the workpiece on the right side of the disk cutter body 1.

[0053] In summary, the adjustable fork-shaped blade root milling cutter provided by the embodiments of the present application realizes the adjustable axial position of the tool holder 2, has a simple structure, and can ensure the stability of the tool holder 2 after adjustment, thereby ensuring the machining quality.

[0054] In a second aspect, the embodiments of the present application provide a processing device, including any one of the adjustable fork-shaped blade root milling cutters as described in the first aspect.

[0055] The processing device provided by the embodiments of the present application adopts the adjustable fork-shaped blade root milling cutter provided in the first aspect, which can improve the machining quality and reduce the fluctuation of the cutting width. Due to the convenience of adjusting the tool holder 2, the overall workpiece machining efficiency can also be improved.

[0056] The above specific embodiments illustrate the implementation manners of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. Although the description of the present application will be introduced in conjunction with some embodiments, this does not mean that the features of this application are limited to this implementation manner. On the contrary, the purpose of introducing the application in conjunction with the implementation manner is to cover other alternatives or modifications that may be extended based on the claims of the present application. To provide a deep understanding of the present application, many specific details are included in the above description. The present application can also be implemented without using these details. In addition, in order to avoid confusing or obscuring the key points of the present application, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0057] It should be noted that in this specification, similar reference numerals and letters denote similar items in the above drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0058] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. An adjustable fork-shaped blade root milling cutter, characterized in that Comprising: A disc cutter body (1), on the side surface of the disc cutter body (1), a plurality of mounting notches (11) are formed, and a first limiting structure (21) is arranged on one side wall of the disc cutter body (1); A tool holder (2), the tool holder (2) is located within the mounting notch (11), the tool holder (2) has a first abutting working surface (24) and a first mating surface, a second limiting structure (12) is arranged on the first mating surface, and the second limiting structure (12) is in sliding fit with the first limiting structure (21) so that the tool holder (2) can slide in the mounting notch (11) in a direction parallel to the axial direction of the disc cutter body (1). Wherein, the first limiting structure (21) also forms a mechanical limit for the second limiting structure (12) in the radial direction of the disc cutter body (1); A blade (3), the blade (3) is connected to the tool holder (2); A pressing block (4), the pressing block (4) is located within the mounting notch (11) and is movably connected to the disc cutter body (1) so that the pressing block (4) can move in the radial direction of the disc cutter body (1), the pressing block (4) has a second abutting working surface (42). Wherein, when the pressing block (4) moves, the second abutting working surface (42) and the first abutting working surface (24) can have different overlapping areas, thereby applying different abutting forces to the tool holder (2).

2. The adjustable fork-shaped blade root milling cutter according to claim 1, characterized in that, The first limiting structure (21) and the second limiting structure (12) are arranged as a tooth-shaped structure that can cooperate with each other.

3. The adjustable fork-shaped blade root milling cutter according to claim 1, wherein The disc cutter body (1) is in threaded fit with a screw rod (6) so that the screw rod (6) can move in a direction parallel to the axial direction of the disc cutter body (1). Wherein, the tool holder (2) is in transmission fit with the screw rod (6) to act synchronously under the drive of the screw rod (6).

4. The adjustable fork-shaped blade root milling cutter according to claim 3, characterized in that, On one side wall of the mounting notch (11), a circular notch (13) is formed, the screw rod (6) is in threaded fit with the inner wall of the circular notch (13). Wherein, a limiting groove (22) adapted to accommodate the part of the screw rod (6) exposed from the circular notch (13) is formed on the tool holder (2), so that the tool holder (2) acts along with the movement of the screw rod (6).

5. The adjustable fork-shaped blade root milling cutter according to claim 1, wherein An anti-detachment groove (23) is formed on the first abutting working surface (24) of the tool holder (2), and an anti-detachment member (7) is elastically connected within the anti-detachment groove (23), and the anti-detachment member (7) abuts against the second abutting working surface (42) of the pressing block (4) under the action of elastic force.

6. The adjustable fork-type blade root milling cutter according to claim 5, characterized in that, The anti-detachment member (7) is configured as a cap pin shaft, and a spiral spring (8) is sleeved on the cap pin shaft and is elastically connected to the tool holder (2) through the spiral spring (8).

7. The adjustable fork-type blade root milling cutter according to claim 1, characterized in that A locking through hole (41) is formed on the pressing block (4), a locking member (5) is in threaded fit within the locking through hole (41), one end of the locking member (5) penetrates through the locking through hole (41) and is in threaded fit with the disc cutter body (1). Wherein, the internal thread of the locking through hole (41) has a reverse thread direction to the internal thread of the disc cutter body (1).

8. The adjustable fork-shaped blade root milling cutter according to claim 7, wherein The locking member (5) is configured as a double-headed screw rod (6).

9. The adjustable fork-shaped blade root milling cutter according to claim 1, characterized in that, The blades (3) on adjacent tool holders (2) are arranged in a reverse direction.

10. A processing device, characterized in that, Comprising an adjustable fork-shaped blade root milling cutter according to any one of claims 1 to 9.

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