CN115126026A

CN115126026A - Milling device of slot milling machine and slot milling machine

Info

Publication number: CN115126026A
Application number: CN202210532342.2A
Authority: CN
Inventors: 郑文; 王淑婧; 倪坤
Original assignee: Jiangsu XCMG Construction Machinery Institute Co Ltd
Current assignee: Jiangsu XCMG Construction Machinery Institute Co Ltd
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2022-09-30

Abstract

The invention relates to a slot milling machine milling device and a slot milling machine, wherein the slot milling machine milling device comprises a milling cutter frame base body (10), a milling wheel (20), a first guide assembly (30) and a second guide assembly (40); the milling wheel (20) is rotatably arranged on the milling cutter frame base body (10), the first guide assembly (30) is arranged on the milling cutter frame base body (10), the first guide surface of the first guide assembly (30) protrudes out of the installation surface of the milling cutter frame base body (10), the second guide assembly (40) is arranged on the milling cutter frame base body (10), and the distance between the second guide surface of the second guide assembly (40) and the outer surface of the milling cutter frame base body (10) is adjustable. The slot milling machine comprises a slot milling machine milling device. The invention can improve the stability of the movement of the milling cutter frame base body (10) in a groove body milled by the milling wheel (20), and can correct the posture of the milling cutter frame base body (10), thereby ensuring that the groove milling machine has higher groove forming precision under different working conditions.

Description

Milling device of slot milling machine and slot milling machine

Technical Field

The invention relates to the technical field of engineering machinery, in particular to a milling device of a slot milling machine and the slot milling machine.

Background

The double-wheel slot milling machine is underground continuous wall slot forming equipment, and the maximum construction depth of the double-wheel slot milling machine can reach more than 150m, so that the double-wheel slot milling machine has higher requirements on slot forming precision. The groove wall milled by the double-wheel slot milling machine is a non-smooth plane, so that the milling cutter frame is prevented from being clamped by the rugged groove wall in the milling process, the overall dimension of the milling cutter frame is usually 70-140 mm smaller than the dimension of the groove wall actually milled by the milling wheel, and the whole milling cutter frame is in a suspended state after the milling cutter frame is completely inserted into the groove, so that the milling cutter frame is easy to incline under the action of impact force generated by milling the milling wheel, and the grooving precision of the slot milling machine is influenced.

It is noted that the information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

Disclosure of Invention

The invention provides a milling device of a slot milling machine and the slot milling machine, which can realize the guiding and posture adjustment of a milling cutter frame in the construction process of the slot milling machine, thereby improving the slot forming precision of the slot milling machine.

According to one aspect of the present invention, there is provided a slot milling machine milling apparatus comprising:

a milling cutter holder base;

the milling wheel is rotatably arranged on the milling cutter frame base body;

the first guide assembly is arranged on the milling cutter frame base body, and a first guide surface of the first guide assembly protrudes out of the mounting surface of the milling cutter frame base body; and

and the second guide assembly is arranged on the milling cutter frame base body, and the distance between the second guide surface of the second guide assembly and the outer surface of the milling cutter frame base body is adjustable.

In some embodiments, the area of the first guide surface is less than the area of the second guide surface.

In some embodiments, the first guide assembly is removably mounted to the milling cutter holder base.

In some embodiments, the first guide assembly comprises:

and a first guide member including a first mounting surface configured to be coupled to the milling cutter holder base body and a first guide portion for forming a first guide surface, the first guide portion including a first support surface arranged along a length of the milling cutter holder base body for supporting the milling cutter holder base body and a first guide surface inclined with respect to the first support surface for guiding the milling cutter holder base body around the obstacle during movement of the milling cutter holder base body.

In some embodiments, the first support surface and the first guide surface are connected by a rounded transition.

In some embodiments, the first guide member further includes a first connection surface connected between the first mounting surface and the first guide portion, and the first connection surface is perpendicular to the first mounting surface.

In some embodiments, the milling cutter holder base body includes a first side surface perpendicular to an axis of the cutterhead, the first guide assembly includes two first guide members disposed on the first side surface and symmetrically arranged about a lengthwise centerline of the first side surface, the first guide members further include a first wedge portion adjacent the cutterhead, the width of the first wedge portion gradually decreases in a direction adjacent the cutterhead such that a trumpet-shaped opening toward the cutterhead is formed between the two first guide members.

In some embodiments, the milling cutter holder body includes a first side surface perpendicular to the axis of the cutterhead, the first guide is mounted to the first side surface, the first guide further includes a first inclined surface adjacent to the lengthwise centerline of the first side surface, the first inclined surface is connected between the first guide portion and the first mounting surface, and the first inclined surface is inclined relative to the first mounting surface such that the area of the orthographic projection of the first guide portion on the first mounting surface is smaller than the area of the first mounting surface.

In some embodiments, the first guide assembly includes two first guide members, and the second guide assembly is located between the two first guide members in a length direction of the milling cutter holder base body.

In some embodiments, the second guide assembly comprises:

and a second guide including a first drive member and a first top plate, the first top plate including a surface for forming a second guide surface, the first drive member configured to drive the first top plate to move relative to the milling cutter holder base to adjust a distance between the second guide surface of the second guide assembly and the outer surface of the milling cutter holder base.

In some embodiments, the milling cutter holder base body comprises a first side surface and a second side surface which are perpendicular to and opposite to the axis of the cutterhead, and a third side surface and a fourth side surface which are parallel to and opposite to the axis of the cutterhead, the width of the first side surface and the second side surface is larger than that of the third side surface and the fourth side surface, the first guide assembly comprises eight first guide parts which are symmetrically arranged on the first side surface and the second side surface, and the second guide assembly comprises eight second guide parts which are symmetrically arranged on the first side surface and the second side surface.

In some embodiments, on the first side, four first guide members are symmetrically arranged on two sides of a length-direction center line of the first side, wherein two first guide members are arranged at one end of the first side, which is far away from the cutterhead, and are respectively close to the third side and the fourth side, and the other two first guide members are arranged at one end of the first side, which is close to the cutterhead, and are respectively close to the third side and the fourth side; the four second guiding parts are symmetrically arranged on two sides of a center line of the first side surface in the length direction, two of the second guiding parts are arranged at one end, far away from the milling cutter, of the first side surface, the other two second guiding parts are arranged at one end, close to the milling cutter, of the first side surface, and in the length direction of the first side surface, the four second guiding parts are located between the first guiding parts respectively arranged at two ends of the first side surface.

In some embodiments, the milling cutter holder base body comprises a first side surface and a second side surface which are perpendicular to and opposite to the axis of the cutterhead, and a third side surface and a fourth side surface which are parallel to and opposite to the axis of the cutterhead, the width of the first side surface and the second side surface is larger than that of the third side surface and the fourth side surface, the first guide assembly comprises eight first guide parts which are symmetrically arranged on the third side surface and the fourth side surface, and the second guide assembly comprises four second guide parts which are symmetrically arranged on the third side surface and the fourth side surface.

In some embodiments, on the third side surface, four first guide members are symmetrically arranged on two sides of the length direction center line of the third side surface, wherein two first guide members are arranged at one end of the third side surface far away from the milling cutter, and the other two first guide members are arranged at one end of the third side surface close to the milling cutter; the two second guide pieces are arranged along the central line of the length direction of the third side face, one of the second guide pieces is arranged at one end, far away from the milling cutter, of the third side face, the other one of the second guide pieces is arranged at one end, close to the milling cutter, of the third side face, and in the length direction of the third side face, the two second guide pieces are located between the first guide pieces which are respectively arranged at the two ends of the third side face.

In some embodiments, the first guide member comprises a first wedge-shaped part close to the cutterhead and a second wedge-shaped part far away from the cutterhead, the width of the first wedge-shaped part is gradually reduced along the direction close to the cutterhead, and the width of the second wedge-shaped part is gradually reduced along the direction far away from the cutterhead, so that a saddle-shaped through groove is formed between two first guide members which are symmetrically arranged about the length direction center line of the third side surface; the second guide member includes an escape groove penetrating in the longitudinal direction of the third side surface.

In some embodiments, the first guide part comprises a first supporting surface, and the distance between the first supporting surfaces of the two first guide parts symmetrically arranged on the first side surface and the second side surface is 5-10 mm smaller than the milling thickness of the milling wheel.

In some embodiments, the first guide part comprises a first supporting surface, and the distance between the first supporting surfaces of the two first guide parts symmetrically arranged on the third side surface and the fourth side surface is 5-10 mm smaller than the milling width of the milling wheel.

According to another aspect of the invention, a slot milling machine is provided, which comprises the slot milling device.

Based on the technical scheme, the first guide assembly with the first guide surface protruding out of the milling cutter frame base body is arranged on the milling cutter frame base body, and the distance between the first guide surface and the milling cutter frame base body is fixed, so that the gap between the milling cutter frame base body and the groove wall is reduced, and the milling cutter frame base body can be prevented from being greatly inclined or shaken in the groove body; the distance between the second guide surface and the outer surface of the milling cutter frame base body is adjustable, so that when the milling cutter frame base body is inclined due to changes of working conditions and the like, the distance between the second guide surface and the outer surface of the milling cutter frame base body can be adjusted in real time, the second guide surface is kept in contact with the groove wall to generate reaction force, and the posture of the milling cutter frame base body is corrected. Therefore, the first guide assembly and the second guide assembly are arranged simultaneously, so that the stability of the movement of the milling cutter frame base body in the groove body can be improved, the posture of the milling cutter frame base body can be corrected, and the groove forming precision of the groove milling machine under different working conditions is guaranteed.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

figure 1a shows a schematic view of the configuration of a first side of the basic body of a milling cutter holder according to an embodiment of the milling device of a slot-milling machine according to the invention;

fig. 1b shows a schematic representation of the third side of the milling cutter holder base body from fig. 1 a;

figure 2a shows a front view of a first guide member in one embodiment of a slot milling apparatus of the present invention;

FIG. 2b shows a left side view of the first guide of FIG. 2 a;

FIG. 2c shows a rear view of the first guide of FIG. 2 a;

figure 3a shows a front view of a first guide member in another embodiment of the slot milling apparatus of the present invention;

FIG. 3b shows a left side view of the first guide of FIG. 3 a;

FIG. 3c shows a rear view of the first guide of FIG. 3 a;

FIG. 4 shows an enlarged view of portion A of FIG. 1 a;

FIG. 5 shows an enlarged view of portion B of FIG. 1B;

figure 6a shows a front view of a second guide member in an embodiment of the milling device of the slot milling machine according to the invention;

FIG. 6b shows a left side view of the second guide of FIG. 6 a;

figure 7a shows a front view of a second guide member in another embodiment of the slot milling apparatus of the present invention;

FIG. 7b shows a left side view of the second guide of FIG. 7 a;

fig. 8a shows a schematic structural view of a second side of the milling cutter holder base body in fig. 1 a;

fig. 8b shows a schematic representation of the construction of the fourth side of the milling cutter holder base body in fig. 1 a;

fig. 9a, 9b show a schematic representation of the distances L1 and W1, respectively, in one embodiment of the slot milling apparatus of the present invention.

In the figure:

10. a milling cutter holder base; 11. a first side surface; 12. a second side surface; 13. a third side; 14. a fourth side;

20. milling a wheel;

30. a first guide assembly; 31. a first guide member; 311. a first mounting surface; 312. a first support surface; 313. a first guide surface; 314. a first connection face; 315. a first wedge portion; 316. a first inclined plane; 317. a second wedge portion; 318. mounting holes;

40. a second guide assembly; 41. a second guide member; 411. a first driving member; 412. a first top plate; 413. a first mounting body.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the scope of the invention.

In the actual milling process of the slot milling machine, in order to prevent the slot milling machine frame from being clamped by the rugged slot wall, the overall dimension of the slot milling machine frame is usually designed to be 70-140 mm smaller than the milled slot body, and the fact that the arrangement is easy to cause the milling machine frame to tilt in the milling process of the slot milling machine frame in practice so as to influence the final slot forming precision is found. Therefore, the inventor provides improvements to a milling device of a slot milling machine and the slot milling machine.

As shown in fig. 1a and 1b, in some embodiments, the slot milling apparatus includes a milling cutter holder base 10, a cutterhead 20, a first guiding component 30 and a second guiding component 40, wherein the cutterhead 20 is rotatably mounted on the milling cutter holder base 10, the first guiding component 30 is mounted on the milling cutter holder base 10, a first guiding surface of the first guiding component 30 protrudes from a mounting surface of the milling cutter holder base 10, the second guiding component 40 is mounted on the milling cutter holder base 10, and a distance between a second guiding surface of the second guiding component 40 and an outer surface of the milling cutter holder base 10 is adjustable.

The distance between the first guide surface and the groove wall is kept in a small range by arranging the first guide component 30 with the first guide surface protruding out of the milling cutter frame base body 10, so that the inclination degree of the milling cutter frame base body 10 possibly reached in the milling process is reduced by the supporting effect of the first guide surface, and the movement of the milling cutter frame base body 10 is guided, so that the stability of the milling cutter frame base body 10 in the movement process is improved; by arranging the second guide assembly 40 with the adjustable distance between the second guide surface and the outer surface of the milling cutter frame base body 10, under the condition that the milling cutter frame base body 10 is inclined, the deviation of the milling cutter frame base body 10 is corrected by adjusting the distance between the second guide surface and the outer surface of the milling cutter frame base body 10, namely, the posture of the milling cutter frame base body 10 is adjusted by thrust generated by contact between the second guide surface and the groove wall, so that the milling cutter frame base body 10 is pushed to return to a non-inclined state.

Because the distance between the first guide surface and the milling cutter frame base body 10 is fixed in the construction process of the slot milling machine and cannot be adjusted along with different working conditions, the area of the first guide surface can be set to be smaller so as to prevent the milling cutter frame base body 10 from being clamped by obstacles on the slot wall; and the second guiding surface is used for further increasing the contact area of the guiding surface and the groove wall on the basis of the first guiding surface, and the distance between the second guiding surface and the milling cutter frame base body 10 can be automatically adjusted according to actual working conditions in the construction process of the slot milling machine, so that the area of the second guiding surface can be set to be larger, and the guiding stability can be ensured.

In some embodiments, the first guide assembly 30 is removably mounted to the milling cutter holder base 10.

Set up first direction subassembly 30 to dismantling, then the construction demand that different groove thickness was satisfied to the mode of the first direction subassembly 30 of accessible change different specifications or increase the cushion before carrying out the construction.

As shown in fig. 1a and 1b, in some embodiments, the first guide assembly 30 includes a first guide member 31, as shown in fig. 2a, 2b and 2c, the first guide member 31 includes a first mounting surface 311 and a first guide portion for forming a first guide surface, the first mounting surface 311 is configured to be connected with the milling cutter holder base body 10, the first guide portion includes a first support surface 312 and a first guide surface 313 arranged along a length direction of the milling cutter holder base body 10, the first support surface 312 is used for supporting the milling cutter holder base body 10, and the first guide surface 313 is inclined with respect to the first support surface 312 to guide the milling cutter holder base body 10 around obstacles during movement of the milling cutter holder base body 10.

As can be seen in fig. 2b, the first guide portion has a convex configuration, so that it can act as a support when the milling cutter holder base body 10 moves in the groove; the first mounting surface 311 and the first support surface 312 are both of a planar structure, the first guide surface 313 is connected between the first mounting surface 311 and the first support surface 312, both the upper and lower ends of the first support surface 312 are connected to the first guide surface 313 with reference to the direction shown in the drawing, and the first guide surface 313 is inclined with respect to the first support surface 312, so that the first guide portion is configured as a structure through which an obstacle easily passes in the longitudinal direction of the milling cutter holder base body 10, and the situation that the milling cutter holder base body 10 is stuck due to the first guide member 31 being stuck by the obstacle is avoided, thereby playing a role of guiding the movement of the milling cutter holder base body 10 in the groove.

As shown in fig. 2c, the first guide 31 is connected to the milling cutter holder base body 10 via a mounting hole 318 provided in the first mounting surface 311. In fact, the connection mode of the first guiding element 31 and the milling cutter holder base body 10 can be selected in various ways, including common clamping, insertion, bonding, threaded connection, adsorption connection and the like, and the connection mode can be selected according to actual conditions on the basis that the detachable function can be realized. The first support surface 312 protrudes from the milling cutter holder base body 10 in order to guide and support the movement of the milling cutter holder base body 10 in the groove, so that a large tilting of the milling cutter holder base body 10 is prevented.

In some embodiments, the first support surface 312 and the first guide surface 313 are connected by a rounded transition.

With reference to the direction shown in fig. 2b, by providing a rounded transition to form a smooth surface on the right side of the first guide 31, the resistance generated during the relative movement between the first guide 31 and the groove wall can be reduced, so that the milling cutter holder base body 10 can smoothly bypass the obstacle, thereby preventing the milling cutter holder base body 10 from being jammed.

In some embodiments, the first guiding element 31 further includes a first connecting surface 314, the first connecting surface 314 is connected between the first mounting surface 311 and the first guiding portion, and the first connecting surface 314 is perpendicular to the first mounting surface 311.

The specific structure of the first connection surface 314 is shown in fig. 2b and fig. 3b, and it can be seen from the figure that the thickness of the first connection surface 314 affects the overall thickness of the first guide member 31 to some extent, so that the construction requirements of different groove thicknesses can be met by setting the thickness of the first connection surface 314 to different sizes under different conditions.

As shown in fig. 1a, in some embodiments, the milling cutter holder base body 10 includes a first side surface 11 perpendicular to an axis of the cutterhead 20, the first guide assembly 30 includes two first guide members 31 disposed on the first side surface 11 and symmetrically arranged about a lengthwise center line K1 of the first side surface 11, the first guide members 31 further include a first wedge portion 315 adjacent to the cutterhead 20, a width of the first wedge portion 315 gradually decreases in a direction adjacent to the cutterhead 20, so that a trumpet-shaped opening toward the cutterhead 20 is formed between the two first guide members 31 as shown in fig. 4, and the trumpet-shaped opening guides movement of the milling cutter holder base body 10 when the milling cutter holder base body 10 moves along a milling direction of the cutterhead, so that guiding stability of the first guide assembly 30 can be increased.

The specific structure of the first guide member 31 is as shown in fig. 2a, 2b and 2c, and referring to the direction shown in the drawing, the width of the first guide member 31 gradually decreases from the middle of the first guide member 31 to the lower end of the first guide member 31, so that when the milling cutter holder base body 10 moves downward, the bell mouth structure formed by the two first guide members 31 as shown in fig. 4 can guide the milling cutter holder base body 10 smoothly over obstacles, and avoid the vibration of the milling cutter holder base body 10 due to the uneven groove wall and even the jamming of the milling cutter holder base body 10.

In other embodiments, the first guiding member 31 includes a first wedge portion 315 close to the cutterhead and a second wedge portion 317 far from the cutterhead, the width of the first wedge portion 315 gradually decreases in a direction close to the cutterhead 20, the width of the second wedge portion 317 gradually decreases in a direction far from the cutterhead 20, the specific structure of the first guiding member 31 is shown in fig. 3a, 3b and 3c, and referring to the direction shown in the figures, the first guiding member 31 can be arranged in a vertically symmetrical structure as shown in the figures, and the lengths and the inclination angles of the first wedge portion 315 and the second wedge portion 317 can be arranged to be different, as long as a saddle-shaped through slot is formed between the two first guiding members 31 as shown in fig. 5, so that no matter whether the milling head base 10 advances or retreats from the slot body along the milling direction of the cutterhead (i.e. moves upwards or downwards in the direction shown in the figures), when hitting a projection on the slot wall, the first wedge 315 and the second wedge 317 guide the first guide 31 away from the projection, so that the projection can pass smoothly through the saddle-shaped through-groove, thereby preventing the milling cutter holder base body 10 from being jammed while ensuring the guiding stability of the first guide 31.

That is, in some embodiments, the first guide 31 includes one wedge (as shown in fig. 2 a), and in other embodiments, the first guide 31 includes two wedges (as shown in fig. 3 a). The arrangement of the two wedge-shaped portions enables the milling cutter holder base body 10 to avoid obstacles well when advancing or retreating from the groove body along the milling direction of the milling wheel, but also enables the area of the first guide surface to be reduced, so that the support stability of the first guide assembly is weakened to a certain extent. In practical applications, it is necessary to determine which structure the first guide 31 adopts according to the condition of the groove wall in actual construction, the motion condition of the milling cutter holder base body 10, and the like.

As shown in fig. 1a and 1b, in some embodiments, the milling cutter holder base body 10 includes a first side surface 11 perpendicular to the axis of the cutterhead 20, the first guide member 31 is mounted to the first side surface 11, as shown in fig. 4, the first guide member 31 further includes a first inclined surface 316 near a lengthwise center line K1 of the first side surface 11, the first inclined surface 316 is connected between the first guide portion and the first mounting surface 311, and the first inclined surface 316 is inclined with respect to the first mounting surface 311 so that an area of an orthographic projection of the first guide portion on the first mounting surface 311 is smaller than an area of the first mounting surface 311.

As shown in fig. 2a, referring to the direction shown in the figure, when the first guide 31 encounters the protrusion on the groove wall during the downward movement, the first inclined surface 316 inclined to the moving direction of the first guide 31 can further function to guide the protrusion gently through the surface of the first guide 31, further avoiding the cutter holder base 10 from being caught by an obstacle during the movement, thereby further increasing the stability of the movement of the cutter holder base 10. The lower end of the first inclined surface 316 may be chamfered as shown in fig. 2a and 2c, and this arrangement avoids the formation of a sharp corner structure on the lowest end of the first guide 31, which directly collides with an obstacle, and not only further improves the stability of the movement of the milling cutter holder base 10, but also prolongs the service life of the first guide 31.

In some embodiments, the first guide assembly 30 includes two first guide members 31, and the second guide assembly 40 is located between the two first guide members 31 in the length direction of the milling cutter holder base body 10.

The first guide assembly 30 mainly serves a basic guiding function, and the second guide assembly 40 is arranged between the two first guide members 31, so that the guiding stability and the posture of the milling cutter holder base body 10 can be further increased and adjusted through the second guide assembly 40 on the basis of ensuring the basic guiding function of the first guide assembly 30.

As shown in fig. 1a and 1b, in some embodiments, the second guide assembly 40 includes a second guide 41, as shown in fig. 6a and 6b, the second guide 41 includes a first driving element 411 and a first top plate 412, the first top plate 412 includes a surface for forming a second guide surface, the first driving element 411 is configured to drive the first top plate 412 to move relative to the milling cutter holder base body 10 to adjust the distance between the second guide surface of the second guide assembly 40 and the outer surface of the milling cutter holder base body 10.

As shown in fig. 6a and 6b, the first top board 412 can move back and forth along the X direction under the action of the first driving member 411, and the displacement of the first top board 412 in the X direction can be controlled by controlling the stroke of the first driving member 411. For example, the first driving member 411 may be a two-stroke cylinder, when the milling cutter holder base body 10 enters the groove body, the first driving member 411 is pushed out by a first stroke, and then the first top plate 412 is pushed out, so that the surface of the first top plate 412 for forming the second guide surface is located on the same plane as the first guide surface 313 of the first guide member 31 located on the same side surface of the milling cutter holder base body 10, thereby supporting and guiding the milling cutter holder base body 10, and preventing the milling cutter holder base body 10 from tilting or shaking in the groove body; when the milling cutter frame base body 10 inclines, the first driving member 411 is pushed out for a second stroke, so that the first top plate 412 is in contact with the groove wall and generates a reaction force, and the milling cutter frame base body 10 is pushed back to a neutral position relative to the groove body, thereby realizing the deviation rectifying function of the milling cutter frame base body 10. Alternatively, the first driving member 411 may be a telescopic device with a displacement sensor, so that the distance between the first top plate 412 and the groove wall can be monitored in real time through the displacement sensor, and the stroke of the first driving member 411 can be adjusted according to the monitoring result, and at this time, the stroke of the first driving member 411 can be adjusted steplessly. When the protrusions on the groove wall are encountered, the first driving element 411 can be controlled to retract the first top plate 412, so that the milling cutter holder base body 10 is prevented from being jammed.

The first driving member 411 may be formed in various manners, such as the above-mentioned two-stroke cylinder, or a common cylinder with a displacement sensor, or other devices capable of controlling the displacement of the first top plate 412, which may be selected according to actual conditions.

In other embodiments, as shown in fig. 1b, the second guiding element 41 includes an avoiding groove running through the third side surface 13 in the length direction, as shown in fig. 7a and 7b, the avoiding groove is disposed on the first top plate 412, and includes a first flared section with a width gradually increasing in the direction close to the cutterhead 20 and a second flared section with a width gradually increasing in the direction away from the cutterhead 20, so that when the protrusion on the groove wall is encountered, the protrusion can smoothly pass through the avoiding groove, thereby ensuring the guiding stability and avoiding the cutter holder base body 10 from being jammed.

As shown in fig. 1a, 1b, 8a and 8b, in some embodiments, the milling cutter holder base body 10 includes a first side 11 and a second side 12 disposed perpendicular to and opposite to an axis of the cutterhead 20, and a third side 13 and a fourth side 14 disposed parallel to and opposite to an axis of the cutterhead 20, and the first side 11 and the second side 12 have a width greater than that of the third side 13 and the fourth side 14, the first guide assembly 30 includes eight first guides 31 symmetrically disposed on the first side 11 and the second side 12, and the second guide assembly 40 includes eight second guides 41 symmetrically disposed on the first side 11 and the second side 12.

Through symmetrically arranging the first guide parts 31 and the second guide parts 41 on the first side surface 11 and the second side surface 12, the stability of the movement of the milling cutter frame base body 10 in the groove body can be ensured, the posture adjustment of the milling cutter frame base body 10 is realized, and the milling cutter frame base body 10 is prevented from inclining and shaking relative to the thickness direction of the groove body. The number of the first guide members 31 and the second guide members 41 on the first side surface 11 and the second side surface 12 can be adjusted according to actual needs.

As shown in fig. 1a, in some embodiments, on the first side 11, four first guides 31 are symmetrically arranged on both sides of a longitudinal center line K1 of the first side 11, wherein two first guides 31 are arranged at an end of the first side 11 away from the cutterhead 20 and are respectively arranged close to the third side 13 and the fourth side 14, and the other two first guides 31 are arranged at an end of the first side 11 close to the cutterhead 20 and are respectively arranged close to the third side 13 and the fourth side 14; the four second guiding members 41 are symmetrically arranged on two sides of the longitudinal center line K1 of the first side surface 11, two of the second guiding members 41 are arranged at one end of the first side surface 11 far away from the cutterhead 20, the other two second guiding members 41 are arranged at one end of the first side surface 11 close to the cutterhead 20, and in the longitudinal direction of the first side surface 11, the four second guiding members 41 are located between the first guiding members 31 respectively arranged at two ends of the first side surface 11.

That is, the four first guide members 31 are arranged at the four corners of the first side surface, so that not only a stable four-corner supporting effect is formed, but also each first guide member 31 can generate a large enough moment to prevent the milling cutter holder base body 10 from rotating or tilting when it comes into contact with the groove wall; the four second guide elements 41 are also arranged in a four-corner manner in a smaller range, so that the stability of the guide can be effectively increased and the posture of the milling cutter holder base body 10 can be adjusted.

As shown in fig. 1a, 1b, 8a and 8b, in some embodiments, the milling cutter holder base body 10 includes a first side 11 and a second side 12 disposed perpendicular to and opposite to an axis of the cutterhead 20 and a third side 13 and a fourth side 14 disposed parallel to and opposite to an axis of the cutterhead 20, and widths of the first side 11 and the second side 12 are greater than widths of the third side 13 and the fourth side 14, the first guide assembly 30 includes eight first guides 31 symmetrically disposed on the third side 13 and the fourth side 14, and the second guide assembly 40 includes four second guides 41 symmetrically disposed on the third side 13 and the fourth side 14.

By symmetrically arranging the first guide pieces 31 and the second guide pieces 41 on the third side surface 13 and the fourth side surface 14, the stability of the movement of the milling cutter frame base body 10 in the tank body can be ensured, and the guiding and posture adjustment of the milling cutter frame base body 10 are realized, so that the milling cutter frame base body 10 is prevented from being inclined and swaying relative to the width direction of the tank body. On the third side 13 and the fourth side 14, the number of the first guide 31 and the second guide 41 can be adjusted according to actual needs.

As shown in fig. 1b, in some embodiments, on the third side surface 13, four first guiding elements 31 are symmetrically arranged on both sides of the longitudinal center line K3 of the third side surface 13, wherein two first guiding elements 31 are arranged at one end of the third side surface 13 far away from the cutterhead 20, and the other two first guiding elements 31 are arranged at one end of the third side surface 13 close to the cutterhead 20; two second guides 41 are arranged along the length-direction center line K3 of the third side 13, wherein one second guide 41 is arranged at an end of the third side 13 far from the cutterhead 20, the other second guide 41 is arranged at an end of the third side 13 close to the cutterhead 20, and in the length direction of the third side 13, the two second guides 41 are located between the first guides 31 respectively arranged at the two ends of the third side 13.

On the narrower side surface of the milling cutter holder base body 10, the first guide 31 and the second guide 41 may be arranged symmetrically with respect to the longitudinal center line of the side surface. The arrangement of the first guide 31 and the second guide 41 on both the end of the third side 13 remote from the cutterhead 20 and the end close to the cutterhead 20 ensures that the first guide 31 and the second guide 41 are in contact with the groove wall with a torque which is large enough to avoid tilting and wobbling of the milling cutter holder base body 10. By arranging the two second guide members 41 between the first guide members 31 at the two ends of the third side surface 13 and the fourth side surface 14, the stability of the overall guide can be further increased and the posture adjustment of the milling cutter holder base body 10 can be realized by the second guide members 41 on the basis of ensuring the basic guide function of the first guide members 31 to the milling cutter holder base body 10.

Due to the structure of the cutterhead 20, the milling of the cutterhead 20 has a milling dead zone, and on the narrower side surface of the slot body milled by the cutterhead 20, along the length direction of the side surface, the middle position of the slot wall is usually left with a projection, so that the first guide 31 with the structure shown in fig. 3a, 3b and 3c and the second guide 41 with the structure shown in fig. 7a and 7b are preferably adopted on the third side surface 13 and the fourth side surface 14.

As shown in fig. 1a and 3a, in some embodiments, the first guide 31 includes a first wedge 315 close to the cutterhead and a second wedge 317 far from the cutterhead, the width of the first wedge 315 gradually decreases in a direction close to the cutterhead 20, and the width of the second wedge 317 gradually decreases in a direction far from the cutterhead 20, so that a saddle-shaped through groove is formed between two first guides 31 symmetrically arranged about the lengthwise center line K3 of the third side 13 as shown in fig. 5; as shown in fig. 1b and 7a, the second guide 41 includes an escape groove penetrating in the longitudinal direction of the third side surface 13. The width of the narrowest part of the saddle-shaped through groove is larger than the width of the bulge at the corresponding position on the groove wall, so that the bulge on the groove wall can smoothly pass through the saddle-shaped through groove when the milling cutter frame base body 10 moves forward along the milling direction of the milling wheel or when the milling cutter frame base body 10 retreats out of the groove body; similarly, the width of the narrowest part of the avoiding groove should be greater than the width of the protrusion at the corresponding position on the groove wall, so that the protrusion on the groove wall can smoothly pass through the avoiding groove when the milling cutter frame base body 10 advances along the milling direction of the milling wheel or when the milling cutter frame base body 10 retreats from the groove body.

Since the widths of the third and fourth side surfaces 13 and 14 are smaller than the widths of the first and second side surfaces 11 and 12, the sizes of the first guide 31 provided on the third and fourth side surfaces 13 and 14 should be reduced accordingly as shown in fig. 1a and 1 b. Through the arrangement, the inclination of the milling cutter frame base body 10 or the clamping of the milling cutter frame base body 10 caused by the protrusions on the groove wall can be effectively prevented, so that the stability of integral guiding is ensured.

In some embodiments, the first guide 31 includes a first supporting surface 312, and the distance between the first supporting surfaces 312 of two first guides 31 symmetrically disposed on the first side surface 11 and the second side surface 12 is 5 to 10mm smaller than the milling thickness of the milling wheel 20.

In some embodiments, the first guide 31 comprises a first supporting surface 312, and the distance between the first supporting surfaces 312 of the two first guides 31 symmetrically arranged on the third side surface 13 and the fourth side surface 14 is 5-10 mm smaller than the milling width of the milling wheel 20.

As shown in fig. 9a, L represents the milling width of the milling cutter 20, L1 represents the distance between the first supporting surfaces 312 of the two first guide members 31 symmetrically arranged on the third side surface 13 and the fourth side surface 14, and L1 is 5-10 mm smaller than L; as shown in fig. 9b, W represents the milling thickness of the cutterhead 20, W1 represents the distance between the first supporting surfaces 312 of the two first guide members 31 symmetrically arranged on the first side surface 11 and the second side surface 12, and W1 is 5 to 10mm smaller than W. Such setting makes still leave certain space between the cell body that first guide 31 and cutterhead 20 milled to can avoid the milling cutter frame base member 10 to be blocked when moving in the cell body, and because distance (5 ~ 10mm) between first guide 31 and the cell body is less than distance (70 ~ 140mm) between milling cutter frame base member 10 and the cell body greatly, then for the condition that does not set up first guide 31, set up first guide 31 and can improve the stability of milling cutter frame base member 10 motion in the cell body greatly, thereby guarantee the grooving precision of slot milling machine.

An embodiment of the milling device of the slot milling machine according to the invention is described below:

as shown in fig. 1a, 1b, 8a and 8b, the slotter milling apparatus of the present invention includes a milling cutter holder base 10, a cutterhead 20, a first guide assembly 30 and a second guide assembly 40. Wherein, the milling cutter holder base body 10 comprises a first side surface 11 and a second side surface 12 which are vertical to and are arranged opposite to the axis of the milling wheel 20, and a third side surface 13 and a fourth side surface 14 which are parallel to and are arranged opposite to the axis of the milling wheel 20, and the width of the first side surface 11 and the width of the second side surface 12 are larger than the width of the third side surface 13 and the width of the fourth side surface 14; the first guide assembly comprises sixteen first guides 31, wherein eight first guides 31 are symmetrically arranged on the first side 11 and the second side 12, and eight other first guides 31 are symmetrically arranged on the third side 13 and the fourth side 14; the second guide assembly 40 includes twelve second guide members 41, wherein eight second guide members 41 are symmetrically disposed on the first side 11 and the second side 12, and the other four second guide members 41 are symmetrically disposed on the third side 13 and the fourth side 14.

In the present embodiment, the first guide 31 disposed on the first side 11 and the second side 12 adopts the structure shown in fig. 2a, 2b and 2c, and the first guide 31 disposed on the third side 13 and the fourth side 14 adopts the structure shown in fig. 3a, 3b and 3 c; the second guide 41 disposed on the first and

second sides

11 and 12 adopts the structure shown in fig. 6a and 6b, and the second guide 41 disposed on the third and fourth sides 13 and 14 adopts the structure shown in fig. 7a and 7 b.

As shown in fig. 1a, 2b and 2c, the first guide member 31 disposed on the first side surface 11 and the second side surface 12 includes a first mounting surface 311 and a first guide portion, the first mounting surface 311 is fixed on the milling cutter holder base body 10 through a mounting hole 318, the first guide portion includes a first support surface 312 disposed along a length direction of the milling cutter holder base body 10, a first connection surface 314 and two first guide surfaces 313, the first support surface 312 is used for supporting the milling cutter holder base body 10, the two first guide surfaces 313 are inclined with respect to the first support surface 312, and the first support surface 312 and the two first guide surfaces 313 are connected by rounded transition, the first connection surface 314 is connected between the first mounting surface 311 and the first guide portion, and the first connection surface 314 is perpendicular to the first mounting surface 311. Referring to the direction shown in fig. 2, the first guide 31 includes a first wedge portion 315 at a lower portion thereof, and the width of the first wedge portion 315 gradually decreases from top to bottom, the right side of the first guide 31 includes a first inclined surface 316, the first inclined surface 316 is connected between the first guide and the first mounting surface 311, and the first inclined surface 316 is inclined with respect to the first mounting surface 311, so that the area of the orthographic projection of the first guide on the first mounting surface 311 is smaller than the area of the first mounting surface 311.

As shown in fig. 1a, 6a and 6b, the second guide 41 disposed on the first side surface 11 and the second side surface 12 includes a first driving member 411, a first mounting body a and a first top plate 412, the first top plate 412 is a flat plate as a whole, the first top plate 412 can move back and forth in the X direction in fig. 6b under the action of the first driving member 411, wherein the first driving member 411 is a two-stroke cylinder or a common cylinder mounted with a displacement sensor.

As shown in fig. 1b, 3a, 3b and 3c, the first guide 31 disposed on the third side surface 13 and the fourth side surface 14 includes a first mounting surface 311 and a first guide portion, the first mounting surface 311 is fixed on the milling cutter holder base body 10 through a mounting hole 318, the first guide portion has a convex structure, the first guide portion includes a first support surface 312 disposed along a length direction of the milling cutter holder base body 10, a first connection surface 314 and two first guide surfaces 313, the first support surface 312 is used for supporting the milling cutter holder base body 10, the two first guide surfaces 313 are inclined with respect to the first support surface 312, and the first support surface 312 and the two first guide surfaces 313 are connected by a rounded transition, the first connection surface 314 is connected between the first mounting surface 311 and the first guide portion, and the first connection surface 314 is perpendicular to the first mounting surface 311. Referring to the orientation shown in fig. 3a, the first guide member 31 includes a first wedge portion 315 at a lower portion thereof and a second wedge portion 317 at an upper portion thereof, and the width of the first wedge portion 315 is gradually decreased from top to bottom and the width of the second wedge portion 317 is gradually increased from top to bottom.

As shown in fig. 1b, 7a and 7b, the second guide 41 disposed on the third side 13 and the fourth side 14 includes a first driving member 411, a first mounting body 413 and a first top plate 412, the first top plate 412 includes an avoiding groove penetrating along a length direction thereof, such that the first top plate 412 is divided into a left portion and a right portion, the avoiding groove includes a first flared section having a width gradually increasing in a direction approaching the cutterhead 20 and a second flared section having a width gradually increasing in a direction away from the cutterhead 20, a width of a narrowest portion of the avoiding groove is larger than a width of a protrusion corresponding to the groove wall, the first top plate 412 is movable back and forth along an X direction in fig. 7b by the first driving member 411, wherein the first driving member 411 is a double-stroke cylinder or a common cylinder mounted with a displacement sensor.

Only the arrangement of the first guide 31 and the second guide 41 disposed on the first side 11 and the third side 13 will be specifically described next.

As shown in fig. 1a, on the first side 11, four first guides 31 are symmetrically arranged on both sides of a longitudinal center line K1 of the first side 11, wherein two first guides 31 are arranged at an end of the first side 11 away from the cutterhead 20 and are respectively arranged close to the third side 13 and the fourth side 14, the other two first guides 31 are arranged at an end of the first side 11 close to the cutterhead 20 and are respectively arranged close to the third side 13 and the fourth side 14, and first supporting surfaces 312 of the four first guides 31 protrude out of the first side 11. The four second guiding members 41 are symmetrically arranged on two sides of the longitudinal center line K1 of the first side surface 11, two of the second guiding members 41 are arranged at one end of the first side surface 11 far away from the cutterhead 20, the other two second guiding members 41 are arranged at one end of the first side surface 11 close to the cutterhead 20, and in the longitudinal direction of the first side surface 11, the four second guiding members 41 are located between the first guiding members 31 respectively arranged at two ends of the first side surface 11. That is, on the first side surface 11, four first guides 31 are arranged at four corners of the first side surface, and four second guides 41 are also arranged at four corners in a smaller range.

As shown in fig. 1b, on the third side surface 13, four first guiding members 31 are symmetrically disposed on two sides of a longitudinal center line K3 of the third side surface 13, wherein two first guiding members 31 are disposed on one end of the third side surface 13 far away from the cutterhead 20, and the other two first guiding members 31 are disposed on one end of the third side surface 13 close to the cutterhead 20. It should be noted that, as shown in fig. 5, a gap should be left between the two first guide members 31 symmetrically disposed on both sides of the longitudinal center line K3 of the third side surface 13, so that a saddle-shaped through slot with upper and lower bell mouths is formed between the two first guide members 31, and when encountering the protrusion on the slot wall, the upper and lower bell mouths can smoothly guide the protrusion into and through the through slot, thereby preventing the milling cutter holder base body 10 from being jammed. Two second guides 41 are arranged along the length-direction center line K3 of the third side 13, one of the second guides 41 is arranged at an end of the third side 13 away from the cutterhead 20, the other one of the second guides 41 is arranged at an end of the third side 13 close to the cutterhead 20, and in the length direction of the third side 13, the two second guides 41 are located between the first guides 31 respectively disposed at both ends of the third side 13.

The operation of this embodiment will be explained as follows:

when the slot milling machine is in a non-working state, the first top plate 412 of the second guide member 41 is in a fully retracted state, and the distance between the first guide surface of the first guide assembly 30 and the mounting surface of the milling cutter holder base body 10 is greater than the distance between the second guide surface of the second guide assembly 40 and the same mounting surface of the milling cutter holder base body 10; when the milling cutter holder base body 10 enters the groove body along with the milling wheel 20, the first driving piece 411 is pushed out, and the first top plate 412 is pushed out to a position where a plane for forming a second guide surface on the first top plate 412 is flush with the first supporting surface 312; when the milling cutter frame base body 10 inclines, the first driving element 411 is controlled to be further pushed out, so that the first top plate 412 is further pushed out until the first top plate contacts with the groove wall and interacts with the groove wall, and the posture of the milling cutter frame base body 10 is corrected; when the protrusions on the groove wall cause the milling cutter holder base body 10 to be unable to feed or lift out the groove, the first driving member 411 is controlled to retract so that the milling cutter holder base body 10 can feed or lift out the groove smoothly.

Through the description of the various embodiments of the slot milling device provided by the invention, the slot milling device provided by the invention has at least the following advantages:

1. good guidance quality and high reliability: in the milling process of the slot milling machine, the distance between the first guide surface of the first guide assembly 30 and the installation surface of the milling cutter frame is fixed, so that the guide reliability and stability of the first guide assembly 30 are ensured, and then the second guide assembly 40 is further arranged, and the distance between the second guide surface and the outer surface of the milling cutter frame base body is adjusted in real time, so that the gap between the second guide surface and the slot wall is kept in a reasonable range, and the stability of the integral guide can be further improved;

2. have the function of rectifying, can improve the grooving precision greatly: in the milling process of the slot milling machine, the distance between the second guide surface of the second guide assembly 40 and the mounting surface of the milling cutter frame is adjustable, the posture of the milling cutter frame base body is corrected by generating a reaction force by contacting the second guide surface with the slot wall, and the large deviation of the milling cutter frame base body 10 is avoided, so that the slot forming precision of the slot milling machine is ensured;

3. strong adaptability, convenient maintenance: first direction subassembly 30 is for dismantling, and second direction subassembly 40 includes adjustable structure for slotter milling unit can be applicable to the construction environment that different grooves are thick, and the change and the maintenance in first direction subassembly 30 and second direction subassembly 40 later stage are also very convenient simultaneously.

Based on the milling device of the slot milling machine, the invention also provides the slot milling machine, which comprises the milling device of the slot milling machine. The positive technical effects of the milling device of the slot milling machine in the above embodiments are also applicable to the slot milling machine, and are not described herein again.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made without departing from the principles of the invention, and these modifications and equivalents are intended to be included within the scope of the claims.

Claims

1. A slot milling machine milling unit, its characterized in that includes:

a milling cutter holder base (10);

a cutterhead (20) rotatably mounted on the milling cutter holder base body (10);

the first guide assembly (30) is arranged on the milling cutter frame base body (10), and a first guide surface of the first guide assembly (30) protrudes out of a mounting surface of the milling cutter frame base body (10); and

and the second guide assembly (40) is arranged on the milling cutter frame base body (10), and the distance between the second guide surface of the second guide assembly (40) and the outer surface of the milling cutter frame base body (10) is adjustable.

2. A slot milling apparatus as set forth in claim 1 wherein the area of the first guide surface is less than the area of the second guide surface.

3. The slot milling apparatus of claim 1, wherein the first guide assembly (30) is removably mounted to the milling cutter holder base (10).

4. Slot milling apparatus according to claim 1, characterised in that the first guide assembly (30) comprises:

a first guide member (31) comprising a first mounting surface (311) and a first guide portion for forming the first guide surface, the first mounting surface (311) being configured to be connected with the milling cutter holder base body (10), the first guide portion comprising a first support surface (312) and a first guide surface (313) arranged along a length direction of the milling cutter holder base body (10), the first support surface (312) being for supporting the milling cutter holder base body (10), the first guide surface (313) being inclined with respect to the first support surface (312) to guide the milling cutter holder base body (10) around an obstacle during movement of the milling cutter holder base body (10).

5. A slot milling machine milling unit according to claim 4, characterized in that the first support surface (312) and the first guide surface (313) are connected by a rounded transition.

6. The slot milling device according to claim 4, characterized in that the first guide (31) further comprises a first connecting face (314), the first connecting face (314) being connected between the first mounting face (311) and the first guide portion, and the first connecting face (314) being perpendicular to the first mounting face (311).

7. The slot milling apparatus of claim 4, wherein the milling cutter holder base body (10) comprises a first side surface (11) perpendicular to the axis of the cutterhead (20), the first guide assembly (30) comprises two first guide members (31) provided at the first side surface (11) and arranged symmetrically about the longitudinal center line of the first side surface (11), the first guide members (31) further comprise a first wedge portion (315) adjacent to the cutterhead (20), the width of the first wedge portion (315) gradually decreases in a direction adjacent to the cutterhead (20) so that a trumpet-shaped opening towards the cutterhead (20) is formed between the two first guide members (31).

8. The slot milling apparatus of claim 4, wherein the milling cutter holder base body (10) includes a first side surface (11) perpendicular to an axis of the cutterhead (20), the first guide (31) is mounted to the first side surface (11), the first guide (31) further includes a first inclined surface (316) adjacent to a lengthwise centerline of the first side surface (11), the first inclined surface (316) is connected between the first guide portion and the first mounting surface (311), and the first inclined surface (316) is inclined with respect to the first mounting surface (311) such that an orthographic area of the first guide portion on the first mounting surface (311) is smaller than an area of the first mounting surface (311).

9. The slot milling apparatus of claim 1, wherein the first guide assembly (30) comprises two first guide members (31), and the second guide assembly (40) is located between the two first guide members (31) in the length direction of the milling cutter holder base body (10).

10. Slot milling apparatus according to claim 1, characterised in that the second guide assembly (40) comprises:

a second guide (41) comprising a first drive member (411) and a first top plate (412), the first top plate (412) comprising a surface for forming the second guide surface, the first drive member (411) being configured to drive the first top plate (412) to move relative to the milling cutter holder base body (10) to adjust a distance between the second guide surface of the second guide assembly (40) and an outer surface of the milling cutter holder base body (10).

11. A slot milling apparatus according to any one of claims 1 to 10, the milling cutter holder base body (10) comprises a first side surface (11) and a second side surface (12) which are perpendicular to and are arranged opposite to the axis of the milling wheel (20), and a third side surface (13) and a fourth side surface (14) which are parallel to and are arranged opposite to the axis of the milling wheel (20), and the width of the first side (11) and the second side (12) is greater than the width of the third side (13) and the fourth side (14), the first guide assembly (30) comprises eight first guide members (31) symmetrically arranged on the first side surface (11) and the second side surface (12), the second guide assembly (40) comprises eight second guide members (41) symmetrically arranged on the first side surface (11) and the second side surface (12).

12. The slot milling apparatus according to claim 11, characterized in that on the first side (11) four first guides (31) are arranged symmetrically on both sides of the longitudinal centre line of the first side (11), wherein two first guides (31) are arranged at the end of the first side (11) remote from the cutterhead (20) and are arranged close to the third side (13) and the fourth side (14), respectively, and the other two first guides (31) are arranged at the end of the first side (11) close to the cutterhead (20) and are arranged close to the third side (13) and the fourth side (14), respectively; the four second guide pieces (41) are symmetrically arranged on two sides of a length direction center line of the first side face (11), two of the second guide pieces (41) are arranged at one end, far away from the milling cutter (20), of the first side face (11), the other two of the second guide pieces (41) are arranged at one end, close to the milling cutter (20), of the first side face (11), and in the length direction of the first side face (11), the four second guide pieces (41) are located between the first guide pieces (31) which are respectively arranged at two ends of the first side face (11).

13. A slot milling apparatus according to any one of claims 1 to 10, the milling cutter holder base body (10) comprises a first side surface (11) and a second side surface (12) which are perpendicular to and opposite to the axis of the milling wheel (20), and a third side surface (13) and a fourth side surface (14) which are parallel to and opposite to the axis of the milling wheel (20), and the width of the first side (11) and the second side (12) is greater than the width of the third side (13) and the fourth side (14), the first guide assembly (30) comprises eight first guide members (31) symmetrically arranged on the third side surface (13) and the fourth side surface (14), the second guiding assembly (40) comprises four second guiding pieces (41) symmetrically arranged on the third side surface (13) and the fourth side surface (14).

14. The slot milling apparatus of claim 13, characterized in that on the third side (13), four first guide members (31) are symmetrically arranged on both sides of the longitudinal center line of the third side (13), wherein two first guide members (31) are arranged at the end of the third side (13) far from the cutterhead (20), and the other two first guide members (31) are arranged at the end of the third side (13) near to the cutterhead (20); two second guide pieces (41) are arranged along the center line of the third side surface (13) in the length direction, one of the second guide pieces (41) is arranged at one end of the third side surface (13) far away from the milling cutter (20), the other second guide piece (41) is arranged at one end of the third side surface (13) close to the milling cutter (20), and in the length direction of the third side surface (13), the two second guide pieces (41) are located between the first guide pieces (31) respectively arranged at two ends of the third side surface (13).

15. The slot milling apparatus of claim 14, wherein the first guide (31) comprises a first wedge portion (315) close to the cutterhead and a second wedge portion (317) far from the cutterhead, the width of the first wedge portion (315) gradually decreases in a direction close to the cutterhead (20), and the width of the second wedge portion (317) gradually decreases in a direction far from the cutterhead (20), so that a saddle-shaped through slot is formed between two first guide (31) symmetrically arranged about the lengthwise center line of the third side (13); the second guide (41) includes an escape groove that penetrates in the longitudinal direction of the third side surface (13).

16. The slot milling device according to claim 11, characterized in that the first guide (31) comprises a first support surface (312), the distance between the first support surfaces (312) of the two first guides (31) symmetrically arranged on the first side surface (11) and the second side surface (12) being 5-10 mm smaller than the milling thickness of the cutterhead (20).

17. The slot milling device according to claim 13, characterized in that the first guide (31) comprises first support surfaces (312), the distance between the first support surfaces (312) of the two first guides (31) symmetrically arranged on the third side surface (13) and the fourth side surface (14) being 5-10 mm smaller than the milling width of the cutterhead (20).

18. A slot milling machine comprising slot milling means as claimed in any one of claims 1 to 17.