Grooving machine guide, Grooving machine and Grooving machine guiding method

Abstract

This invention discloses a guiding device for a milling machine, a milling machine, and a guiding method for a milling machine, relating to the field of engineering machinery, to improve the adaptability of the guiding device for a milling machine. The guiding device for the milling machine includes a support base, a guiding assembly, a first leg, and a second leg. The support base includes a body and a first mounting portion, the first mounting portion being fixed to the body. The guiding assembly is rotatably mounted on the first mounting portion; the guiding assembly is configured to provide guidance for the milling cutter holder of the milling machine. The first leg is fixed to the side of the body away from the first mounting portion. The second leg is movably mounted to the side of the body away from the first mounting portion, and the distance between the first leg and the second leg changes with the mounting position of the second leg. The above technical solution is applicable to various types and models of milling cutter holders, and achieves guidance by wrapping the milling cutter holder from the outside, resulting in high guiding accuracy.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of engineering machinery, in particular to a trench milling machine guiding device, a trench milling machine and a trench milling machine guiding method. BACKGROUND

[0002] With the rapid growth of domestic and foreign infrastructure investment, there are more and more infrastructure construction projects. As one of the most advanced underground continuous wall construction equipment, the double-wheel trench milling machine is widely used in underground continuous wall construction projects. At present, the super deep project at home and abroad reaches a depth of more than 110m, and the requirement for trenching accuracy is extremely harsh, reaching 1‰. This requires the double-wheel trench milling machine cutter holder to have a very high verticality from the trenching start to ensure the trenching accuracy of the subsequent milling work. In view of this problem, the double-slot trench milling machine trenching guiding device emerges as the times require. As a trenching auxiliary equipment, the guiding device plays a guiding and righting role for the trenching section cutter holder, and is crucial to the double-wheel trenching accuracy.

[0003] In the prior art, the double-slot trench milling machine trenching guiding device includes a limiting assembly, and the limiting assembly includes a first guiding support and a second guiding support. The two are hingedly fixed on the ear plate of the guiding frame through a pin shaft. In work, four-point six-point guiding (the first guiding support clamps the left and right correction plates of the cutter holder, and the second guiding support clamps the upper and lower correction plates of the cutter holder) is adopted. The cutter holder will be lowered along the rectangular area formed by the guiding supports to achieve the purpose of guiding. When working under different slot widths, the position of the correction plate of the cutter holder will be adjusted. In related technologies, in order to adapt to the correction plate of the cutter holder at different positions, the second guiding support needs to be disassembled first, then moved to different positions on the guiding frame, and then assembled again to adapt to the construction requirements of the cutter holder of different expansion sizes under different slot widths.

[0004] The inventor finds that at least the following problems exist in the prior art: the second guiding support is relatively heavy, and multiple workers need to cooperate during the disassembly and assembly of the second guiding support, which wastes manpower and time and has low safety; and the double-slot trench milling machine trenching guiding device can only be applied to a specific type of cutter holder of the trench milling machine, and is not applicable to cutter holders of other types of trench milling machines. SUMMARY

[0005] The present application provides a trench milling machine guiding device, a trench milling machine and a trench milling machine guiding method to improve the adaptability of the trench milling machine guiding device.

[0006] The embodiment of the present application provides a trench milling machine guiding device, which comprises:

[0007] The support seat comprises a body and a first mounting portion, and the first mounting portion is fixed to the body.

[0008] a guide assembly rotatably mounted to the first mounting portion; the guide assembly is configured to guide a milling cutter holder of the slot milling machine;

[0009] a first leg fixed to a side of the body away from the first mounting portion; and

[0010] a second leg movably mounted to a side of the body away from the first mounting portion, a distance between the first leg and the second leg changes with a mounting position of the second leg.

[0011] In some embodiments, the number of the guide assemblies is two, the two guide assemblies are arranged in pairs; each of the guide assemblies comprises two sets of guide plate assemblies, the two sets of guide plate assemblies are oppositely arranged; each of the guide plate assemblies guides one of the corners of the milling cutter holder of the slot milling machine.

[0012] In some embodiments, each of the guide assemblies further comprises:

[0013] a vertical plate rotatably connected to the first mounting portion;

[0014] two side plates, the two side plates are arranged in parallel and are both fixedly connected to the vertical plate;

[0015] the guide plate assembly comprises a first guide plate and a second guide plate; the first guide plate is attached to and fixed to the vertical plate, and the second guide plate is attached to and fixed to the side plate;

[0016] wherein the vertical plates of the two guide plate assemblies of the guide assembly are shared.

[0017] In some embodiments, each of the guide assemblies further comprises:

[0018] a reinforcing plate fixedly connected to the side plate and the vertical plate; the reinforcing plate is located outside the two side plates; and the reinforcing plate is arranged in a row.

[0019] In some embodiments, each of the guide assemblies further comprises:

[0020] a handle fixedly connected to the vertical plate to switch the guide assembly between a avoiding position and a guiding position.

[0021] In some embodiments, the slot milling machine guiding device further comprises:

[0022] a limiting assembly mounted on a rotatable path of the guide assembly relative to the first mounting portion; the limiting assembly is configured to limit a rotation limit of the guide assembly relative to the first mounting portion.

[0023] In some embodiments, two first legs and two second legs are arranged along the width direction of the support base, and the first legs and the second legs are arranged in one-to-one correspondence.

[0024] In some embodiments, one end of each second leg is rotatably connected to the body, and the other end of each second leg is further connected to the body through an oil cylinder to enable the second leg to rotate relative to the body under the drive of the oil cylinder.

[0025] In some embodiments, the support base further comprises:

[0026] A second mounting portion is mounted to the body, and the oil cylinder is rotatably mounted to the second mounting portion.

[0027] Embodiments of the present application also provide a slot milling machine comprising the slot milling machine guiding device provided by any of the technical solutions of the present application.

[0028] In some embodiments, the slot milling machine further comprises:

[0029] A milling cutter holder, and the guiding assembly of the slot milling machine guiding device is clamped outside the four corners of the milling cutter holder.

[0030] Embodiments of the present application also provide a slot milling machine guiding method, comprising the following steps:

[0031] Clamping one end of the first leg of the slot milling machine guiding device into the inner wall of one side of the slot hole;

[0032] Adjusting the angle of the second leg of the slot milling machine guiding device relative to the body to change the distance between the first leg and the second leg, so that the second leg is also clamped into the inner wall of the other side of the slot hole;

[0033] Rotating the guiding assembly to a avoiding position, and then placing the milling cutter holder;

[0034] Rotating the guiding assembly to a guiding position.

[0035] The slot milling machine guiding device provided by the above technical solution comprises a support base, a guiding assembly, a first leg and a second leg. The support base provides support for the installation of other components, and the guiding assembly provides a wrapping type guiding for the four corners of the milling cutter holder. The distance between the first leg and the second leg is adjustable to adapt to slot holes of different sizes. The above solution effectively avoids the position of the deviation correction plate of the milling cutter holder. Since the base body of each expansion size and each model of the milling cutter holder has the same size, the technical solution solves the problems of size change caused by the deviation correction expansion of the milling cutter holder and the need to redesign the limiting assembly due to the position change of the deviation correction plate of different models of the milling cutter holder by changing the guided component. Therefore, the slot milling machine guiding device can be applied to various types and models of milling cutter holders. Attached Figure Description

[0036] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0037] Figure 1 This is a three-dimensional structural diagram of the milling machine guide device provided in an embodiment of the present invention.

[0038] Figure 2 This is a partial structural diagram of the guide assembly of the milling machine guide device provided in an embodiment of the present invention.

[0039] Figure 3 A schematic diagram of the guide assembly of the milling machine guide device provided in an embodiment of the present invention in an avoidance position.

[0040] Figure 4 This is a schematic diagram of the guide assembly of the milling machine guide device provided in an embodiment of the present invention in the guide position.

[0041] Figure 5 This is a cross-sectional view of the milling machine guide device in use according to an embodiment of the present invention.

[0042] Figure 6 This is a top view of the milling machine guide device in use according to an embodiment of the present invention.

[0043] Figure 7 This is a schematic diagram of a milling machine guiding method provided in an embodiment of the present invention.

[0044] Figure label:

[0045] 1. Support base; 2. Guide assembly; 3. First leg; 4. Second leg; 5. Limiting assembly; 6. Milling cutter holder; 7. Hydraulic cylinder; 8. First pin; 9. Slot; 10. Rope;

[0046] 11. Body; 12. First mounting part; 13. Second mounting part; 14. First pin; 15. Second pin; 16. Third pin; 20. Guide plate assembly; 21. Vertical plate; 22. Side plate; 23. Reinforcing plate; 24. Handle; 25. Ear plate; 26. Connecting shaft; 201. First guide plate; 202. Second guide plate. Detailed Implementation

[0047] The following is combined Figures 1-7 The technical solution provided by this invention will be described in more detail below.

[0048] This invention provides a guide device 100 for a trenching machine, applicable to twin-wheel trenching machines and similar equipment, and can be used in diaphragm wall construction projects. For ultra-deep projects with a depth of over 110m, the guide device ensures that the milling cutter holder 6 of the twin-wheel trenching machine has extremely high verticality from the moment it enters the trench, effectively improving trenching accuracy and ensuring the trenching accuracy of subsequent milling operations.

[0049] See Figure 1 In order to describe the various directions, an XYZ coordinate system was established in this paper, where the X direction is the length direction of the support 1, the Y direction is the width direction of the support 1, and the Z direction is the height direction of the support 1.

[0050] See Figure 1 This invention provides a guiding device for a milling machine, including a support base 1, a guiding assembly 2, a first support leg 3, and a second support leg 4. The support base 1 includes a body 11 and a first mounting portion 12, which is fixed to the body 11. The guiding assembly 2 is rotatably mounted on the first mounting portion 12; the guiding assembly 2 is configured to provide guidance for the milling cutter holder 6 of the milling machine. The first support leg 3 is fixed to the side of the body 11 away from the first mounting portion 12. The second support leg 4 is movably mounted on the side of the body 11 away from the first mounting portion 12, and the distance between the first support leg 3 and the second support leg 4 changes depending on the mounting position of the second support leg 4.

[0051] The support base 1 is roughly rectangular and comprises multiple tubular sections welded together to form a rectangular frame. A through-hole is located in the center of the frame, providing operational space for lowering and retracting the milling cutter holder 6. (See also...) Figure 1 The support base 1 also includes ropes 10, which may be one or more. The ropes 10 are arranged parallel to the width direction Y of the support base 1.

[0052] In some embodiments, there are two guide components 2, arranged in pairs. One guide component 2 is installed at each end of the support base 1 in the width direction. The guide component 2 is rotatably connected relative to the support base 1. The guide component 2 has two positions: a clearance position and a guiding position. Figure 1 and Figure 4 In the middle, the guide component 2 is in the guide position. In this position, the guide component 2 is at a limit position of rotation, and it is supported by the support base 1. Figure 3 The guide component 2 is in the avoidance position. In this position, the guide component 2 is at another extreme position of rotation, which is supported by the limit component 5. A drive mechanism can be set to switch the guide component 2 between the guide position and the switching position, or the switching of the guide component 2 between the guide position and the switching position can be achieved manually.

[0053] See Figure 1Each guide assembly 2 includes two sets of guide plate assemblies 20, which are arranged opposite to each other. Each guide plate assembly 20 provides guidance for one corner of the milling cutter holder 6 of the milling machine. Each guide assembly 2 provides guidance for two corners of the milling cutter holder 6. The two guide assemblies 2 provide guidance for all four corners of the milling cutter holder 6. Furthermore, the milling cutter holder 6 is located between the two guide assemblies 20, that is, the guide plate assemblies 20 are located on the outside of the milling cutter holder 6, providing support for the milling cutter holder 6 in a wrapping manner. This guiding method ensures that the contact between the guide plate assemblies 20 and the milling cutter holder 6 is surface-to-surface contact, which can provide more precise guidance and result in higher grooving accuracy.

[0054] See Figure 2 Each guide assembly 2 also includes a vertical plate 21 and two side plates 22. The vertical plate 21 is rotatably connected to the first mounting part 12. The two side plates 22 are arranged in parallel and are fixedly connected to the vertical plate 21. The two side plates 22 are located on one side of the vertical plate 21. The other side of the vertical plate 21 is rotatably connected to the first mounting part 12. To facilitate the connection between the vertical plate 21 and the first mounting part 12, the guide assembly 2 also includes ear plates 25, with two ear plates 25 installed on each vertical plate 21. The ear plates 25 are welded and fixed to the vertical plate 21. The ear plates 25 are rotatably connected to the first mounting part 12 via connecting shafts 26 and other connecting components. The vertical plate 21 is a flat plate, and bent edges or welded reinforcing edges can be provided on the top and bottom edges of the vertical plate 21 to increase the structural strength of the guide assembly 2. The side plates 22 are also flat plates, and bent edges or welded reinforcing edges are also provided on the top and bottom edges of the side plates 22 to further increase the structural strength of the guide assembly 2. Both the side plate 22 and the upright plate 21 are provided with multiple threaded holes 261, through which the guide plate assembly 20 is fixed. When it is necessary to replace the guide plate assembly 20 with one of different thicknesses, it can be easily disassembled and assembled.

[0055] See Figure 1 and Figure 2 The guide plate assembly 20 includes a first guide plate 201 and a second guide plate 202. Both the first guide plate 201 and the second guide plate 202 are flat plates. The first guide plate 201 is attached to and fixed to the upright plate 21, specifically by bolts. The second guide plate 202 is attached to and fixed to the side plate 22, specifically by bolts. The upright plate 21 of the two guide plate assemblies 20 of the guide assembly 2 is shared.

[0056] See Figure 2 In some embodiments, each guide assembly 2 includes a vertical plate 21, two side plates 22, and two guide plate assemblies 20. The two guide plate assemblies 20 form two right-angled regions to guide the two corners of the milling cutter holder 6. The four guide plate assemblies 20 form four right-angled regions to guide the four corners of the milling cutter holder 6. This arrangement effectively avoids the location of the milling cutter holder 6's correction plate.

[0057] See Figure 1 and Figure 2 In some embodiments, each guide assembly 2 further includes a reinforcing plate 23, which is fixedly connected to both the side plate 22 and the upright plate 21. The reinforcing plate 23 is located outside the two side plates 22, and the reinforcing plates 23 are arranged in a row with the same distance between adjacent reinforcing plates 23. The reinforcing plate 23 is approximately triangular. This structure can greatly increase the structural strength of the guide assembly 2.

[0058] See Figure 1 and Figure 2 In some embodiments, each guide assembly 2 further includes a handle 24, which is fixedly connected to the side plate 22 to switch the guide assembly 2 between a clearance position and a guide position. The handle 24 is welded to the side plate 22. Pulling the handle 24 causes the guide assembly 2 to rotate relative to the support base 1. Figure 3 This indicates that pulling handle 24 causes guide component 2 to rotate to the avoidance position. Figure 4 This indicates that pulling handle 24 causes guide assembly 2 to rotate to the guide position.

[0059] See also Figure 3 In some embodiments, the milling machine guide device further includes a limiting component 5, which is mounted on the rotatable path of the guide component 2 relative to the first mounting portion 12. The limiting component 5 is configured to limit the rotational limit of the guide component 2 relative to the first mounting portion 12. The limiting component 5 is, for example, a plate fixed to the first mounting portion 12 and located on the rotational path of the guide component 2, so that the guide component 2 does not rotate at an excessive angle.

[0060] See Figure 5 The following describes how the milling machine guide device 100 engages with the slot hole 9. In some embodiments, along the width direction of the support base 1, two first legs 3 and two second legs 4 are provided, with the first legs 3 and second legs 4 arranged in a one-to-one correspondence. At each end of the width direction of the support base 1, there is one first leg 3 and one second leg 4. The position of the first leg 3 is fixed, while the position of the second leg 4 can be adjusted to accommodate slot holes 9 of different sizes.

[0061] See Figure 1 and Figure 5In some embodiments, one end of each second leg 4 is rotatably connected to the main body 11; the other end of each second leg 4 is also connected to the main body 11 via a hydraulic cylinder 7, so that the second leg 4 rotates relative to the main body 11 under the drive of the hydraulic cylinder 7. The cylinder barrel is rotatably connected to the main body 11, and the piston rod of the hydraulic cylinder 7 is rotatably connected to the second leg 4. The extension and retraction of the hydraulic cylinder 7 drives the second leg 4 to rotate relative to the main body 11, thereby pushing the second leg 4 to rotate at a certain angle around the first pin 8, thus changing the distance between the first leg 3 and the second leg 4. The rotation angle is, for example, 0° to 15°. To facilitate the installation of the hydraulic cylinder 7, the support base 1 also includes a second mounting part 13, which is detachably fixed to the main body 11 via multiple first pins 14. The cylinder barrel of the hydraulic cylinder 7 is rotatably connected to the second mounting part 13. The piston rod of the hydraulic cylinder 7 is rotatably connected to the second mounting part 13 via a second pin 15.

[0062] The following describes the usage of the milling machine guide device 100.

[0063] After the first leg 3 of the milling machine guide device 100 presses against the inner wall of the slot 9, the hydraulic cylinder 7 drives the second leg 4 to rotate around the third pin 16 by extension and retraction, so that the second leg 4 presses against the slot wall, thereby achieving the positioning of the guide device 100 in the slot 9 (e.g., Figure 5 (As shown).

[0064] Before lowering the milling cutter holder 6, the operator flips the guide assembly 2 of the guide device clockwise using handle 24, and places it in a limited position using the limiting assembly 5 on the support base 1 (e.g., Figure 3 (As shown), to prevent the milling wheel position of the milling cutter holder 6 from interfering with the guide assembly 2 during the lowering process, when the milling wheel position of the milling cutter holder 6 passes the position of the guide assembly 2, the operator flips the guide assembly 2 counterclockwise using the handle 24, and limits its placement by the ear plate 25 on the support base 1 (as shown). Figure 4 As shown), the limiting component 5 can ensure the verticality of the working surface of the guide component 2 and ensure the accuracy requirements of the milling machine guide device 100 itself.

[0065] During operation, the four right-angled areas formed by the two guide plate assemblies 20 limit the four corners of the milling cutter holder 6 base, effectively avoiding the location of the milling cutter holder 6 correction plate, allowing the milling cutter holder 6 base to be lowered along the track, achieving the purpose of guidance (e.g. Figure 6 (As shown).

[0066] This invention also provides a milling machine, including a milling machine guide device provided by any of the technical solutions of this invention.

[0067] In some embodiments, the milling machine further includes a milling cutter holder 6, and the guide components 2 of the milling machine guide device are engaged at the four outer corners of the milling cutter holder 6.

[0068] For milling machines of different sizes, the dimensions of the milling cutter holder 6 are basically the same. In the technical solution of this embodiment, the milling cutter holder 6 is used as the guided component, and the guiding positions are the four corners of the milling cutter holder 6. This guiding method effectively avoids the location of the milling machine's correction plate, and also forms a surface-to-surface contact guide for the milling cutter holder 6, resulting in high guiding accuracy and high hole forming accuracy.

[0069] See Figure 7 This invention also provides a milling machine guiding method, implemented using the milling machine guiding device described in any of the above embodiments. The milling machine guiding method includes the following steps:

[0070] Step S100: The first leg 3 of the milling machine guide device 100 is engaged on one side of the inner wall of the slot 9.

[0071] Step S200: Adjust the angle of the second leg 4 of the milling machine guide device 100 relative to the body 11 to change the distance between the first leg 3 and the second leg 4, so that the second leg 4 is also stuck on the inner wall of the other side of the slot 9.

[0072] Step S300: Rotate the guide assembly 2 to the clearance position, and lower the milling cutter holder 6. See below. Figure 3 .

[0073] Step S400: Rotate guide assembly 2 to the guide position, see [link / reference] Figure 4 .

[0074] The above technical solution adjusts the rotation angle of the second leg 4 according to the different sizes of the slot 9, ensuring that the first leg 3 and the second leg 4 of the milling machine guide device 100 can always be firmly locked against the inner wall of the slot 9 for slots of different sizes. Then, the guide assembly 2 is rotated to the clearance position, and the milling cutter holder 6 is lowered normally; after the milling cutter holder 6 is in position, the guide assembly 2 is rotated back to the guide position. This method achieves that the guide assembly 2 wraps around the four corners of the milling cutter holder 6 from the outside, and the guide assembly 2 is in surface contact with the milling cutter holder 6, resulting in high guiding accuracy and high subsequent hole forming accuracy.

[0075] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this invention and to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. However, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A guiding device for a milling machine, characterized in that, include: The support base (1) includes a body (11) and a first mounting part (12), the first mounting part (12) being fixed to the body (11); A guide assembly (2) is rotatably mounted on the first mounting portion (12); the guide assembly (2) is configured to provide guidance for the milling cutter holder (6) of the milling machine; The first leg (3) is fixed to the side of the body (11) away from the first mounting part (12); and The second leg (4) is movably mounted on the side of the body (11) away from the first mounting part (12), and the distance between the first leg (3) and the second leg (4) changes with the mounting position of the second leg (4); The number of guide components (2) is two, and the two guide components (2) are arranged in pairs; each guide component (2) includes two sets of guide plate assemblies (20), and the two sets of guide plate assemblies (20) are arranged opposite to each other; each guide plate assembly (20) provides guidance for one corner of the milling cutter holder (6) of the milling machine; The two guide components (2) provide limits at the four corners of the milling cutter holder (6) to avoid the correction plate of the milling cutter holder (6).

2. The milling machine guide device according to claim 1, characterized in that, Each of the aforementioned guide components (2) further includes: The upright plate (21) is rotatably connected to the first mounting part (12); Two side plates (22) are arranged in parallel and are fixedly connected to the upright plate (21); The guide plate assembly (20) includes a first guide plate (201) and a second guide plate (202); the first guide plate (201) is attached to and fixed to the upright plate (21), and the second guide plate (202) is attached to and fixed to the side plate (22); The two guide plate assemblies (20) of the guide assembly (2) share the upright plate (21).

3. The milling machine guide device according to claim 2, characterized in that, Each of the aforementioned guide components (2) further includes: The reinforcing plate (23) is fixedly connected to both the side plate (22) and the upright plate (21); the reinforcing plate (23) is located outside the two side plates (22); and the reinforcing plates (23) are arranged in a row.

4. The milling machine guide device according to claim 2, characterized in that, Each of the aforementioned guide components (2) further includes: The handle (24) is fixedly connected to the upright plate (21) to switch the guide assembly (2) between a clearance position and a guide position.

5. The milling machine guide device according to claim 1, characterized in that, Also includes: A limiting component (5) is installed on the rotatable path of the guide component (2) relative to the first mounting portion (12); the limiting component (5) is configured to limit the rotation limit of the guide component (2) relative to the first mounting portion (12).

6. The milling machine guide device according to claim 1, characterized in that, Along the width direction of the support base (1), there are two first legs (3) and two second legs (4), and the first legs (3) and the second legs (4) are arranged in a one-to-one correspondence.

7. The milling machine guide device according to claim 6, characterized in that, One end of each second leg (4) is rotatably connected to the body (11); the other end of each second leg (4) is also connected to the body (11) via a hydraulic cylinder (7) so that the second leg (4) can rotate relative to the body (11) under the drive of the hydraulic cylinder (7).

8. The milling machine guide device according to claim 7, characterized in that, The support base (1) also includes: The second mounting part (13) is mounted on the main body (11); the oil cylinder (7) is rotatably mounted on the second mounting part (13).

9. A milling machine, characterized in that, Includes the milling machine guide device (100) as described in any one of claims 1 to 8.

10. The milling machine according to claim 9, characterized in that, Also includes: The guide components (2) of the milling machine guide device (100) are engaged on the four outer corners of the milling cutter holder (6).

11. A method for guiding a milling machine, characterized in that, Includes the following steps: The first leg (3) of the milling machine guide device (100) according to any one of claims 1-8 is engaged in the inner wall of one side of the slot; Adjust the angle of the second leg (4) of the milling machine guide device (100) relative to the body (11) to change the distance between the first leg (3) and the second leg (4), so that the second leg (4) is also locked on the inner wall of the other side of the slot. Rotate the guide assembly (2) to the clearance position and lower the milling cutter holder (6); Rotate the guide assembly (2) to the guide position.

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