CN115126026A - Slot milling machine Milling device and slot milling machine - Google Patents

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

Slot milling machine Milling device and slot milling machine

technical field

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

Background technique

The double-wheel groove milling machine is an underground continuous wall groove forming equipment, and its maximum construction depth can reach more than 150m, so it has high requirements for groove forming accuracy. Since the groove wall milled by the double-wheel groove milling machine is a non-smooth plane, in order to avoid the milling tool holder being stuck by the uneven groove wall during the milling process, the outer dimension of the milling tool holder is usually larger than that actually milled by the milling wheel. The size of the groove wall is 70-140mm smaller, which leads to the fact that after the milling tool holder is completely inserted into the groove, the entire milling tool holder is in a "suspended state". It has an impact on the slotting accuracy of the slotting machine.

It should be noted that the information disclosed in the Background of the Invention section is only intended to increase understanding of the general background of the invention, and should not be taken as an acknowledgement or any form of suggestion that the information constitutes already known to those skilled in the art current technology.

SUMMARY OF THE INVENTION

The invention provides a milling device and a slot milling machine, which can guide and adjust the attitude of the milling tool holder during the construction process of the slot milling machine, thereby improving the slot forming accuracy of the slot milling machine.

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

Milling tool holder base;

The milling wheel is rotatably mounted on the base of the milling tool holder;

a first guide assembly mounted on the base of the milling tool holder and a first guide surface of the first guide assembly protruding from the mounting surface of the base of the milling tool holder; and

The second guide assembly is mounted on the base of the milling tool holder and the distance between the second guide surface of the second guide assembly and the outer surface of the base of the milling tool holder is adjustable.

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

In some embodiments, the first guide assembly is detachably mounted on the base of the milling tool holder.

In some embodiments, the first guide assembly includes:

The first guide includes a first mounting surface and a first guide portion for forming the first guide surface, the first mounting surface is configured to be connected with the base of the milling tool holder, and the first guide portion includes a length along the base of the milling tool holder A first support surface and a first guide surface arranged in a direction, the first support surface is used to support the base of the milling tool holder, and the first guide surface is inclined relative to the first support surface to guide the milling tool holder during the movement of the base body of the milling tool holder The substrate bypasses the obstacle.

In some embodiments, the first supporting surface and the first guiding surface are connected by a rounded transition.

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

In some embodiments, the base of the milling tool holder includes a first side surface perpendicular to the axis of the milling wheel, and the first guide assembly includes two first guides disposed on the first side surface and symmetrically arranged with respect to the center line of the length direction of the first side surface The first guide member further includes a first wedge-shaped portion close to the milling wheel, and the width of the first wedge-shaped portion gradually decreases along the direction close to the milling wheel, so that a trumpet shape toward the milling wheel is formed between the two first guide members Open your mouth.

In some embodiments, the base of the milling tool holder includes a first side surface perpendicular to the axis of the milling wheel, the first guide member is mounted on the first side surface, and the first guide member further includes a first side surface close to the lengthwise centerline of the first side surface. Inclined surface, the first inclined surface is connected between the first guide part and the first installation surface, and the first inclined surface is inclined relative to the first installation surface, so that the area of the orthographic projection of the first guide part on the first installation surface is smaller than that of the first installation surface. an area of the 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 the length direction of the base body of the milling tool holder.

In some embodiments, the second guide assembly includes:

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

In some embodiments, the base of the milling tool holder includes first and second side surfaces that are perpendicular to and opposite to the axis of the milling wheel, and third and fourth side surfaces that are parallel to and opposite to the axis of the milling wheel, and the first The width of the side and the second side is greater than the width of the third side and the fourth side, the first guide assembly includes eight symmetrically arranged first guides on the first and second sides, and the second guide assembly includes eight symmetrically arranged the second guides on the first side and the second side.

In some embodiments, on the first side, four first guides are symmetrically arranged on both sides of the lengthwise centerline of the first side, wherein the two first guides are arranged on the side of the first side away from the milling wheel One end is arranged near the third side and the fourth side respectively, and the other two first guides are arranged at one end of the first side near the milling wheel and are respectively arranged near the third side and the fourth side; the four second guides are symmetrical Arranged on both sides of the longitudinal centerline of the first side, two second guides are arranged at one end of the first side away from the milling wheel, and the other two second guides are arranged on the first side near the milling wheel. At one end, and in the length direction of the first side surface, the four second guide members are located between the first guide members respectively disposed at both ends of the first side surface.

In some embodiments, the base of the milling tool holder includes first and second side surfaces that are perpendicular to and opposite to the axis of the milling wheel, and third and fourth side surfaces that are parallel to and opposite to the axis of the milling wheel, and the first The width of the side and the second side is greater than the width of the third side and the fourth side, the first guide assembly includes eight symmetrically arranged first guides on the third side and the fourth side, and the second guide assembly includes four symmetrically arranged The second guides on the third side and the fourth side.

In some embodiments, on the third side surface, four first guide pieces are symmetrically arranged on both sides of the longitudinal centerline of the third side surface, wherein two first guide pieces are arranged at one end of the third side surface away from the milling wheel , the other two first guides are arranged at the end of the third side close to the milling wheel; the two second guides are arranged along the lengthwise centerline of the third side, and one of the second guides is arranged at a distance away from the third side One end of the milling wheel, and the other second guide member is arranged at one end of the third side face close to the milling wheel, and in the length direction of the third side face, the two second guide members are located at the first and second guide members respectively arranged at both ends of the third side face. between a guide.

In some embodiments, the first guide member includes a first wedge-shaped portion close to the milling wheel and a second wedge-shaped portion away from the milling wheel. The width gradually decreases in the direction away from the milling wheel, so that a saddle-shaped through groove is formed between the two first guide pieces symmetrically arranged with respect to the longitudinal center line of the third side surface; the second guide piece includes a length along the third side surface The avoidance slot that runs through the direction.

In some embodiments, the first guide member includes a first support surface, and the distance between the first support surfaces of the two first guide members symmetrically arranged on the first side surface and the second side surface is smaller than the milling thickness of the milling wheel by 5 ~10mm.

In some embodiments, the first guide member includes a first support surface, and the distance between the first support surfaces of the two first guide members symmetrically arranged on the third side and the fourth side is smaller than the milling width of the milling wheel by 5 ~10mm.

According to another aspect of the present invention, there is provided a slot milling machine, comprising the above-mentioned milling device of the slot milling machine.

Based on the above technical solutions, in the present invention, a first guide assembly with a first guide surface protruding from the base of the milling tool holder is provided on the base of the milling tool holder, and the distance between the first guide surface and the base body of the milling tool holder is fixed, so that The setting is equivalent to reducing the gap between the base of the milling tool holder and the groove wall, so that the base body of the milling tool holder can be prevented from being greatly inclined or shaken in the slot body; the present invention also provides a second guide surface and a milling tool holder. The second guide component with adjustable distance between the outer surface of the base body can adjust the distance between the second guide surface and the outer surface of the base body of the milling tool holder in real time when the base body of the milling tool holder is inclined due to changes in working conditions and other reasons. The distance between the two guide surfaces keeps the second guide surface in contact with the groove wall to generate a reaction force, so as to correct the posture of the base body of the milling tool holder. Therefore, by arranging the first guide assembly and the second guide assembly at the same time, the present invention can not only improve the stability of the movement of the base body of the milling tool holder in the groove body, but also correct the posture of the base body of the milling tool holder, thereby ensuring that the slot milling machine is in operation. It has high groove forming accuracy under different working conditions.

Description of drawings

The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

1a shows a schematic structural diagram of a first side surface of a base body of a milling tool holder in an embodiment of the milling device for a slot milling machine of the present invention;

Fig. 1b shows a schematic structural diagram of the third side surface of the base body of the milling tool holder in Fig. 1a;

Fig. 2a shows a front view of the first guide member in one embodiment of the milling device of the slot milling machine of the present invention;

Figure 2b shows a left side view of the first guide in Figure 2a;

Figure 2c shows a rear view of the first guide in Figure 2a;

Fig. 3a shows the front view of the first guide member in another embodiment of the milling device of the slot milling machine of the present invention;

Figure 3b shows a left side view of the first guide in Figure 3a;

Figure 3c shows a rear view of the first guide in Figure 3a;

Figure 4 shows an enlarged view of part A in Figure 1a;

Figure 5 shows an enlarged view of part B in Figure 1b;

Fig. 6a shows the front view of the second guide member in one embodiment of the milling device of the slot milling machine of the present invention;

Figure 6b shows a left side view of the second guide in Figure 6a;

Fig. 7a shows the front view of the second guide member in another embodiment of the milling device of the slot milling machine of the present invention;

Figure 7b shows a left side view of the second guide in Figure 7a;

Fig. 8a shows a schematic structural diagram of the second side surface of the base body of the milling tool holder in Fig. 1a;

Fig. 8b shows a schematic structural diagram of the fourth side surface of the base body of the milling tool holder in Fig. 1a;

Figures 9a and 9b respectively show schematic diagrams of distances L1 and W1 in an embodiment of the milling device of the slot milling machine of the present invention.

In the picture:

10. Milling tool holder base; 11. The first side; 12, The second side; 13, The third side; 14, The fourth side;

20. Milling wheel;

30, the first guide assembly; 31, the first guide member; 311, the first installation surface; 312, the first support surface; 313, the first guide surface; 314, the first connection surface; 315, the first wedge part; 316 , the first slope; 317, the second wedge; 318, the mounting hole;

40, the second guide assembly; 41, the second guide member; 411, the first drive member; 412, the first top plate; 413, the first installation body.

Detailed ways

The technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "center", "horizontal", "portrait", "front", "rear", "left", "right", "top", "bottom", " The orientation or positional relationship indicated by vertical, horizontal, top, bottom, inner, outer, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and The description is simplified rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the scope of protection of the present invention.

In the actual milling process of the slot milling machine, in order to prevent the milling tool holder from being stuck by the uneven groove wall, the outer dimension of the milling tool holder is usually designed to be 70-140 mm smaller than the size of the milled slot body. It is found that such a setting is likely to cause the milling tool holder to tilt during the milling process of the slot milling machine, which in turn affects the final slotting accuracy. Therefore, the inventor has made some improvements to provide a slot milling machine and a milling device and a slot milling machine.

As shown in FIGS. 1 a and 1 b , in some embodiments, the milling device of a slot milling machine includes a milling tool holder base 10 , a milling wheel 20 , a first guide assembly 30 and a second guide assembly 40 , and the milling wheel 20 is rotatably mounted. On the milling tool holder base 10, the first guide assembly 30 is installed on the milling tool holder base 10, the first guide surface of the first guide assembly 30 protrudes from the mounting surface of the milling tool holder base 10, and the second guide assembly 40 is installed on the milling tool holder base 10. The distance between the tool holder base 10 and the second guide surface of the second guide assembly 40 and the outer surface of the milling tool holder base 10 is adjustable.

By setting the first guide surface to protrude from the first guide assembly 30 of the base body 10 of the milling tool holder, the distance between the first guide surface and the groove wall is kept in a small range, so that the first guide surface plays a supporting role. In order to reduce the possible inclination of the milling tool holder base 10 during the milling process, the movement of the milling tool holder base 10 is guided to improve the stability of the milling tool holder base 10 during the movement process; and by setting the second guide surface and the milling The distance between the outer surface of the tool holder base body 10 is adjustable with the second guide assembly 40, so that when the milling tool holder base body 10 has been inclined, the distance between the second guide surface and the outer surface of the milling tool holder base body 10 can be adjusted by adjusting the distance between the second guide surface and the outer surface of the milling tool holder base body 10. The distance between the milling tool holder base 10 can be corrected, that is, the attitude of the milling tool holder base 10 is adjusted by the thrust generated by the contact between the second guide surface and the groove wall, so as to push the milling tool holder base 10 back to the non-tilted state.

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

Since the distance of the first guide surface relative to the base 10 of the milling tool holder is fixed during the construction of the slot milling machine and cannot be adjusted with different working conditions, the area of the first guide surface can be set to be small, In order to prevent the base 10 of the milling tool holder from being stuck by the obstacles on the groove wall; and the second guide surface is used to further increase the contact area between the guide surface and the groove wall on the basis of the first guide surface, and the second guide surface is relatively The distance of the base 10 of the tool rest can be automatically adjusted according to the actual working conditions during the construction of the slot milling machine, so the area of the second guide surface can be set larger to ensure the stability of the guide.

In some embodiments, the first guide assembly 30 is detachably mounted on the milling tool holder base 10 .

If the first guide assembly 30 is set to be detachable, the construction requirements of different groove thicknesses can be met by replacing the first guide assembly 30 with different specifications or adding spacers before construction.

As shown in FIGS. 1a and 1b , in some embodiments, the first guide assembly 30 includes a first guide member 31 , and as shown in FIGS. 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 tool holder base 10 , the first guide portion includes a first supporting surface arranged along the length direction of the milling tool holder base 10 312 and a first guide surface 313, the first support surface 312 is used to support the milling tool holder base 10, and the first guide surface 313 is inclined relative to the first support surface 312 to guide the milling cutter during the movement of the milling tool holder base 10 The frame base 10 bypasses the obstacle.

It can be seen from FIG. 2b that the first guide portion has a convex structure, so when the base body 10 of the milling tool holder moves in the groove, the first guide portion can play a supporting role; the first installation surface 311 and the first support surface 312 are all planar structures, and the first guide surface 313 is connected between the first installation surface 311 and the first support surface 312. Referring to the direction shown in the figure, the upper and lower ends of the first support surface 312 are connected to the first guide surface 313. connected, and the first guide surface 313 is inclined relative to the first support surface 312 , so that the first guide portion is configured in the length direction of the milling tool holder base 10 to be a structure that is easy for obstacles to pass through. The situation that the base body 10 of the milling tool holder is stuck occurs when the obstacle is stuck, so as to guide the movement of the base body 10 of the milling tool holder in the groove.

As shown in FIG. 2 c , the first guide member 31 is connected to the base body 10 of the milling tool holder through the mounting holes 318 provided on the first mounting surface 311 . In fact, there are various options for connecting the first guide member 31 to the base body 10 of the milling tool holder, including common snap connection, plug connection, adhesive connection, screw connection, adsorption connection, etc., on the basis of realizing the detachable function You can choose according to the actual situation. The first support surface 312 protrudes from the milling tool holder base 10 to guide and support the movement of the milling tool holder base 10 in the groove, thereby preventing the milling tool holder base 10 from being greatly inclined.

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

Referring to the direction shown in FIG. 2b, by setting the rounded transition, the right side of the first guide member 31 forms a smooth surface, so that the resistance generated during the relative movement between the first guide member 31 and the groove wall can be reduced, so that the milling tool holder The base body 10 can bypass obstacles smoothly, thereby preventing the base body 10 of the milling tool holder from being stuck.

In some embodiments, the first guide member 31 further includes a first connection surface 314, the first connection surface 314 is connected between the first installation surface 311 and the first guide portion, and the first connection surface 314 is connected to the first installation surface 311 vertical.

The specific structure of the first connecting surface 314 is shown in Figures 2b and 3b. It can be seen from the figures that the thickness of the first connecting surface 314 affects the overall thickness of the first guide member 31 to a certain extent. Therefore, in different situations Next, the thickness of the first connection surface 314 can be set to different sizes to meet the construction requirements of different groove thicknesses.

As shown in FIG. 1 a , in some embodiments, the base body 10 of the milling tool holder includes a first side surface 11 that is perpendicular to the axis of the milling wheel 20 , and the first guide component 30 includes a first side surface 11 disposed on the first side surface 11 and relative to the first side surface 11 . The two first guide members 31 are symmetrically arranged on the center line K1 in the longitudinal direction. The first guide member 31 further includes a first wedge-shaped portion 315 close to the milling wheel 20 , and the width of the first wedge-shaped portion 315 gradually decreases along the direction close to the milling wheel 20 . Therefore, a trumpet-shaped opening is formed between the two first guide pieces 31 toward the milling wheel 20 as shown in FIG. The movement of the tool holder base 10 plays a guiding role, which can increase the guiding stability of the first guiding assembly 30 .

The specific structure of the first guide member 31 is shown in FIGS. 2a, 2b and 2c. Referring to the direction shown in the figures, from the middle of the first guide member 31 to the lower end of the first guide member 31, the When the width is gradually reduced, when the milling tool holder base 10 moves downward, the bell mouth structure formed by the two first guide members 31 as shown in FIG. 4 can guide the milling tool holder base 10 to smoothly pass over obstacles, avoiding The vibration of the base body 10 of the milling tool holder due to the unevenness of the groove wall may even cause the base body 10 of the milling tool holder to be stuck.

In other embodiments, the first guide member 31 includes a first wedge-shaped portion 315 close to the milling wheel and a second wedge-shaped portion 317 away from the milling wheel, and the width of the first wedge-shaped portion 315 gradually decreases along the direction close to the milling wheel 20 . , the width of the second wedge-shaped portion 317 gradually decreases along the direction away from the milling wheel 20. The specific structure of the first guide member 31 is shown in FIGS. 3a, 3b and 3c. Referring to the direction shown in the figures, the first guide member 31 can be set as a top-bottom symmetrical structure as shown in the figure, and the lengths and inclination angles of the first wedge-shaped part 315 and the second wedge-shaped part 317 can also be set to be different, as long as the two first guide members 31 are formed as follows: The saddle-shaped through-slot shown in FIG. 5 suffices. No matter whether the base body 10 of the milling tool holder advances or exits the slot along the milling direction of the milling wheel (that is, moves upward or downward in the direction shown in the figure), when it touches the When reaching the protrusion on the groove wall, both the first wedge-shaped portion 315 and the second wedge-shaped portion 317 can guide the first guide member 31 to avoid the protrusion, so that the protrusion can smoothly pass through the saddle-shaped through groove, thereby ensuring At the same time, the guiding stability of the first guide element 31 prevents the milling tool holder base body 10 from being stuck.

That is, in some embodiments, the first guide member 31 includes one wedge-shaped portion (as shown in FIG. 2a ), and in other embodiments, the first guide member 31 includes two wedge-shaped portions (as shown in FIG. 3a ) ). The provision of two wedge-shaped portions can make the base body 10 of the milling tool holder better avoid obstacles when advancing along the milling direction of the milling wheel or when it exits the groove body, but at the same time, it also reduces the area of the first guide surface , thereby weakening the support stability of the first guide assembly to a certain extent. In practical applications, it is necessary to determine which structure the first guide member 31 adopts according to the conditions of the groove walls in the actual construction, the movement conditions of the base 10 of the milling tool holder, and the like.

As shown in FIG. 1a and FIG. 1b, in some embodiments, the milling tool holder base 10 includes a first side surface 11 perpendicular to the axis of the milling wheel 20, and the first guide member 31 is mounted on the first side surface 11, as shown in FIG. 4 . As shown, the first guide member 31 further includes a first inclined surface 316 close to the longitudinal centerline K1 of the first side surface 11 , the first inclined surface 316 is connected between the first guide portion and the first installation surface 311 , and the first inclined surface 316 It is inclined relative to the first installation surface 311 so that the area of the orthographic projection of the first guide portion on the first installation surface 311 is smaller than the area of the first installation surface 311 .

As shown in FIG. 2a, referring to the direction shown in the figure, when the first guide member 31 encounters the protrusion on the groove wall during the downward movement, the first slope inclined to the moving direction of the first guide member 31 316 can further play the role of guiding the protrusions to smoothly pass through the surface of the first guide member 31, further preventing the base body 10 of the milling tool holder from being stuck by obstacles during the movement, thereby further increasing the stability of the movement of the base body 10 of the milling tool holder. . The lower end of the first inclined surface 316 may be provided with a chamfer as shown in the figure. As can be seen from Figures 2a and 2c, such a setting prevents the lowermost end of the first guide member 31 from forming a sharp corner structure that directly collides with obstacles, Not only can the movement stability of the base body 10 of the milling tool holder be further improved, but also the service life of the first guide member 31 can be prolonged.

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 tool holder base 10 .

The first guide assembly 30 mainly plays a basic guiding function. Arranging the second guide assembly 40 between the two first guide members 31 can ensure the basic guiding function of the first guide assembly 30. The guide assembly 40 further increases the guide stability and adjusts the attitude of the milling tool holder base 10 .

As shown in FIGS. 1a and 1b, in some embodiments, the second guide assembly 40 includes a second guide member 41. As shown in FIGS. 6a and 6b, the second guide member 41 includes a first driving member 411 and a first driving member 411. The top plate 412, the first top plate 412 includes a surface for forming the second guide surface, and the first driving member 411 is configured to drive the first top plate 412 to move relative to the milling tool holder base 10 to adjust the second guide assembly 40. Distance between the guide surface and the outer surface of the milling head base body 10 .

As shown in FIG. 6a and FIG. 6b, the first top plate 412 can move back and forth in the X direction under the action of the first driving member 411, and the movement of the first top plate 412 in the X direction can be controlled by controlling the stroke of the first driving member 411. displacement. For example, the first driving member 411 can be a double-stroke oil cylinder. When the base body 10 of the milling tool holder enters the groove body, the first driving member 411 pushes out the first stroke, and the first top plate 412 is pushed out, so that the use of the first top plate 412 Since the surface forming the second guide surface and the first guide surface 313 of the first guide member 31 located on the same side of the milling tool holder base 10 are located on the same plane, the support and guidance of the milling tool holder base 10 are realized, preventing The base body 10 of the milling tool holder tilts or shakes in the groove body; when the base body 10 of the milling tool holder is inclined, the first driving member 411 pushes out the second stroke, so that the first top plate 412 contacts the wall of the groove and generates a reaction force, so that the The base body 10 of the milling tool holder is pushed back to the neutral position relative to the groove body, so as to realize the function of correcting the deviation of the base body 10 of the milling tool holder. Alternatively, the first driving member 411 may be a retractable device equipped 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 first driving member can be adjusted according to the monitoring result. The stroke of 411, at this time, the stroke of the first driving member 411 can realize stepless adjustment. When the protrusion on the groove wall is encountered, the first top plate 412 can also be retracted by controlling the first driving member 411, so as to prevent the base 10 of the milling tool holder from being stuck.

There are various options for the first driving member 411. For example, the above-mentioned double-stroke oil cylinder can be used, or a common oil cylinder equipped with a displacement sensor can be used, or other devices that can control the displacement of the first top plate 412 can be used. The situation can be selected.

As shown in FIG. 1b, in some other embodiments, the second guide member 41 includes an escape groove penetrating through the length direction of the third side surface 13. As shown in FIGS. 7a and 7b, the escape groove is provided on the first top plate 412. , the avoidance groove includes a first flared section whose width gradually increases in the direction close to the milling wheel 20 and a second flared section whose width gradually increases in the direction away from the milling wheel 20 . At the time, the protrusion can smoothly pass through the escape groove, so as to ensure the guiding stability and avoid the base body 10 of the milling tool holder from being stuck.

As shown in FIGS. 1a , 1b , 8a and 8b , in some embodiments, the base body 10 of the milling tool holder includes a first side 11 and a second side 12 which are perpendicular to and opposite to the axis of the milling wheel 20 , and are connected with the milling wheel 20 . The axis of the wheel 20 is parallel to the third side surface 13 and the fourth side surface 14 arranged opposite to each other, and the width of the first side surface 11 and the second side surface 12 is greater than the width of the third side surface 13 and the fourth side surface 14. The first guide assembly 30 includes The eight first guide members 31 are symmetrically arranged on the first side 11 and the second side 12 , and the second guide assembly 40 includes eight second guide members 41 which are symmetrically arranged on the first side 11 and the second side 12 .

By symmetrically arranging a plurality of first guide members 31 and second guide members 41 on the first side surface 11 and the second side surface 12 , the stability of the movement of the milling tool holder base 10 in the groove body can be ensured, and the milling tool holder base 10 can be realized. The posture is adjusted to avoid the inclination and shaking of the base body 10 of the milling tool holder relative to the thickness direction of the groove body. On the first side surface 11 and the second side surface 12 , the number of the first guide members 31 and the second guide members 41 can be adjusted according to actual needs.

As shown in FIG. 1 a , in some embodiments, on the first side surface 11 , four first guide members 31 are symmetrically arranged on both sides of the longitudinal center line K1 of the first side surface 11 , wherein two first guide members 31 is arranged at one end of the first side 11 away from the milling wheel 20 and is arranged close to the third side 13 and the fourth side 14 respectively, and the other two first guides 31 are arranged at one end of the first side 11 close to the milling wheel 20 and They are arranged close to the third side 13 and the fourth side 14 respectively; four second guides 41 are symmetrically arranged on both sides of the longitudinal centerline K1 of the first side 11 , and two second guides 41 are arranged on the first side At one end of the 11 away from the milling wheel 20 , the other two second guide members 41 are arranged at one end of the first side face 11 close to the milling wheel 20 , and in the length direction of the first side face 11 , the four second guide members 41 are It is located between the first guide members 31 respectively disposed at both ends of the first side surface 11 .

That is, the four first guide pieces 31 are arranged on the four corners of the first side surface, so that not only a stable four-corner support effect is formed, but also when each first guide piece 31 is in contact with the groove wall, a sufficiently large torque to prevent rotation or inclination of the milling tool holder base 10; and the four second guide members 41 are also arranged in four corners within a relatively small range, thereby effectively increasing the guiding stability and realizing the milling tool holder base 10. Attitude adjustment.

As shown in FIGS. 1a , 1b , 8a and 8b , in some embodiments, the base body 10 of the milling tool holder includes a first side 11 and a second side 12 which are perpendicular to and opposite to the axis of the milling wheel 20 , and are connected with the milling wheel 20 . The axis of the wheel 20 is parallel to the third side surface 13 and the fourth side surface 14 arranged opposite to each other, and the width of the first side surface 11 and the second side surface 12 is greater than the width of the third side surface 13 and the fourth side surface 14. The first guide assembly 30 includes There are eight first guide members 31 symmetrically arranged on the third side 13 and the fourth side 14 , and the second guide assembly 40 includes four second guide members 41 symmetrically arranged on the third side 13 and the fourth side 14 .

By symmetrically arranging a plurality of first guide members 31 and second guide members 41 on the third side surface 13 and the fourth side surface 14, the stability of the movement of the base body 10 of the milling tool holder in the groove body can be ensured, and the alignment of the base body of the milling tool holder can be ensured. Guide and attitude adjustment of the 10, thereby avoiding the inclination and shaking of the milling tool holder base 10 relative to the width direction of the groove body. On the third side surface 13 and the fourth side surface 14 , the numbers of the first guide members 31 and the second guide members 41 can be adjusted according to actual needs.

As shown in FIG. 1 b , in some embodiments, on the third side surface 13 , four first guide members 31 are symmetrically arranged on both sides of the longitudinal centerline K3 of the third side surface 13 , wherein two first guide members 31 Arranged at the end of the third side 13 away from the milling wheel 20 , the other two first guides 31 are arranged at the end of the third side 13 close to the milling wheel 20 ; the two second guides 41 are along the length of the third side 13 The direction center line K3 is arranged, one of the second guide pieces 41 is arranged at the end of the third side surface 13 away from the milling wheel 20, and the other second guide piece 41 is arranged at the end of the third side surface 13 close to the milling wheel 20, and at the end of the third side surface 13 close to the milling wheel 20 In the length direction of the third side surface 13 , the two second guide members 41 are located between the first guide members 31 respectively disposed at both ends of the third side surface 13 .

On the narrow side surface of the milling tool holder base body 10 , the first guide member 31 and the second guide member 41 may be arranged symmetrically with respect to the longitudinal center line of the side surface. The first guide member 31 and the second guide member 41 are arranged on both the end away from the milling wheel 20 and the end close to the milling wheel 20 of the third side surface 13 to ensure that the first guide member 31 and the second guide member 41 are in contact with the groove wall At this time, a sufficiently large moment can be generated to avoid tilting and shaking of the base body 10 of the milling tool holder. Arranging the two second guide members 41 between the first guide members 31 at both ends of the third side surface 13 and the fourth side surface 14 can ensure the basic guiding function of the first guide members 31 to the milling tool holder base 10 on the basis of On the other hand, the stability of the overall guidance is further increased by the second guide member 41 and the attitude adjustment of the base body 10 of the milling tool holder is realized.

Due to the structure of the milling wheel 20 itself, the milling of the milling wheel 20 has a milling blind area. On the narrow side of the groove body milled by the milling wheel 20, along the length of the side, there is usually a middle position of the groove wall. Therefore, the third side surface 13 and the fourth side surface 14 preferably adopt the first guide member 31 with the structure shown in Fig. 3a, Fig. 3b and Fig. 3c and the second guide member 31 with the structure shown in Fig. 7a and Fig. 7b. Guide 41 .

As shown in FIG. 1a and FIG. 3a, in some embodiments, the first guide member 31 includes a first wedge-shaped portion 315 close to the milling wheel and a second wedge-shaped portion 317 away from the milling wheel. The width of the first wedge-shaped portion 315 is along the The direction of the milling wheel 20 is gradually reduced, and the width of the second wedge-shaped portion 317 is gradually reduced in the direction away from the milling wheel 20 , so that the two first guide members 31 are symmetrically arranged with respect to the longitudinal centerline K3 of the third side surface 13 . A saddle-shaped through groove as shown in FIG. 5 is formed therebetween; as shown in FIG. 1b and FIG. Wherein, the width of the narrowest part of the saddle-shaped through groove should be larger than the width of the protrusion at the corresponding position on the groove wall, then when the base body 10 of the milling tool holder advances along the milling direction of the milling wheel or when the base body 10 of the milling tool holder withdraws When the groove is used, the protrusions on the groove wall can smoothly pass through the saddle-shaped through groove; similarly, the width of the narrowest part of the avoidance groove should be larger than the width of the protrusion at the corresponding position on the groove wall, then the base of the milling tool holder When 10 advances along the milling direction of the milling wheel or when the base body 10 of the milling tool holder exits the groove body, the protrusions on the groove wall can smoothly pass through the avoidance groove.

Since the widths of the third side 13 and the fourth side 14 are smaller than the widths of the first side 11 and the second side 12, as shown in FIG. 1a and FIG. 1b, they are arranged on the third side 13 and the fourth side 14. The size of the first guide member 31 should also be reduced accordingly. With this arrangement, the protrusion on the groove wall can effectively prevent the base body 10 of the milling tool holder from being inclined or the base body 10 of the milling tool holder from being stuck, thereby ensuring the stability of the overall guidance.

In some embodiments, the first guide member 31 includes a first support surface 312, and the distance between the first support surfaces 312 of the two first guide members 31 symmetrically disposed on the first side 11 and the second side 12 is greater than that of milling The milled thickness of the wheel 20 is 5-10 mm smaller.

In some embodiments, the first guide member 31 includes a first support surface 312, and the distance between the first support surfaces 312 of the two first guide members 31 symmetrically disposed on the third side 13 and the fourth side 14 is greater than that of milling The milling width of the wheel 20 is 5-10 mm smaller.

As shown in FIG. 9a, L represents the milling width of the milling wheel 20, L1 represents the distance between the first support surfaces 312 of the two first guide members 31 symmetrically arranged on the third side 13 and the fourth side 14, and L1 is greater than the L is 5-10mm smaller; as shown in FIG. 9b, W represents the milling thickness of the milling wheel 20, and W1 represents the first support surface 312 of the two first guide members 31 symmetrically arranged on the first side 11 and the second side 12. The distance between W1 is 5-10mm smaller than W. This arrangement leaves a certain space between the first guide member 31 and the groove body milled by the milling wheel 20, so that the base body 10 of the milling tool holder can be prevented from being stuck when moving in the groove body. The distance (5-10mm) between the part 31 and the groove body is much smaller than the distance (70-140mm) between the base body 10 of the milling tool holder and the groove body, so compared with the case where the first guide part 31 is not provided, the first guide part 31 is provided. The guide member 31 can greatly improve the stability of the movement of the base body 10 of the milling tool holder in the groove body, thereby ensuring the groove forming accuracy of the groove milling machine.

An embodiment of the milling device of the slot milling machine of the present invention will be described below:

As shown in FIGS. 1 a , 1 b , 8 a and 8 b , the milling device for a slot milling machine of the present invention includes a milling tool holder base 10 , a milling wheel 20 , a first guide assembly 30 and a second guide assembly 40 . Wherein, the base body 10 of the milling tool holder includes a first side 11 and a second side 12 which are perpendicular to and opposite to the axis of the milling wheel 20 and a third side 13 and a fourth side 14 which are parallel and opposite to the axis of the milling wheel 20, And the widths of the first side 11 and the second side 12 are larger than the widths of the third side 13 and the fourth side 14; the first guide assembly includes sixteen first guides 31, of which eight first guides 31 are symmetrically arranged on the On the first side 11 and the second side 12, the other eight first guide members 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, of which eight One second guide member 41 is symmetrically arranged on the first side 11 and the second side 12 , and the other four second guide members 41 are symmetrically arranged on the third side 13 and the fourth side 14 .

In this embodiment, the first guide member 31 arranged on the first side 11 and the second side 12 adopts the structure shown in FIG. 2a, FIG. 2b and FIG. 2c, and is arranged on the third side 13 and the fourth side 14. The first guide member 31 on the upper part adopts the structure shown in Figure 3a, Figure 3b and Figure 3c; the second guide member 41 arranged on the first side 11 and the second side 12 adopts the structure shown in Figure 6a and Figure 6b Structure, the second guide member 41 arranged on the third side surface 13 and the fourth side surface 14 adopts the structure shown in Fig. 7a and Fig. 7b.

1a, 2a, 2b and 2c, the first guide member 31 arranged 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 The first guide portion includes a first support surface 312 , a first connecting surface 314 and two first guide surfaces 313 arranged along the length direction of the milling tool holder base 10 through the mounting holes 318 . A support surface 312 is used to support the milling tool holder base 10 , the two first guide surfaces 313 are inclined with respect to the first support surface 312 , and the transition between the first support surface 312 and the two first guide surfaces 313 is through a rounded corner For connection, the first connection surface 314 is connected between the first installation surface 311 and the first guide portion, and the first connection surface 314 is perpendicular to the first installation surface 311 . Referring to the direction shown in FIG. 2 , the first guide member 31 includes a first wedge-shaped portion 315 at its lower portion, and the width of the first wedge-shaped portion 315 gradually decreases from top to bottom, and the right side of the first guide member 31 includes a first wedge-shaped portion 315 The inclined surface 316, the first inclined surface 316 is connected between the first guide part and the first installation surface 311, and the first inclined surface 316 is inclined relative to the first installation surface 311, so that the first guide part on the first installation surface 311 is inclined. The area of the orthographic projection is smaller than the area of the first installation surface 311 .

As shown in Figures 1a, 6a and 6b, the second guide member 41 arranged on the first side 11 and the second side 12 includes a first driving member 411, a first mounting body a and a first top plate 412, a first The top plate 412 is a flat plate as a whole, and the first top plate 412 can move back and forth along the X direction in FIG. 6 b under the action of the first driving member 411 , wherein the first driving member 411 is a double-stroke oil cylinder or a common oil cylinder equipped with a displacement sensor.

As shown in FIGS. 1b, 3a, 3b and 3c, the first guide member 31 arranged on the third side surface 13 and the fourth side surface 14 includes a first mounting surface 311 and a first guide portion, and the first mounting surface 311 The first guide portion has a convex structure, and the first guide portion includes a first supporting surface 312 and a first connecting surface 314 arranged along the length direction of the milling tool holder base 10 through the mounting hole 318 . and two first guide surfaces 313, the first support surface 312 is used to support the milling tool holder base 10, the two first guide surfaces 313 are inclined relative to the first support surface 312, and the first support surface 312 and the two first The guide surfaces 313 are all connected by rounded transitions, the first connection surface 314 is connected between the first installation surface 311 and the first guide portion, and the first connection surface 314 is perpendicular to the first installation surface 311 . Referring to the direction shown in FIG. 3a, the first guide member 31 includes a first wedge-shaped part 315 at its lower part and a second wedge-shaped part 317 at its upper part, and the width of the first wedge-shaped part 315 gradually decreases from top to bottom, the second The width of the wedge portion 317 gradually increases from top to bottom.

As shown in FIGS. 1b, 7a and 7b, the second guide member 41 arranged 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, a first The top plate 412 includes an escape groove that penetrates along its length direction, so that the first top plate 412 is divided into two parts: left and right, and the escape groove includes a first flared section whose width gradually increases in the direction close to the milling wheel 20 and a width along the direction away from the milling wheel 20. The width of the narrowest part of the avoidance groove is larger than the width of the corresponding protrusion on the groove wall, and the first top plate 412 can move along the direction of the The X direction in 7b moves back and forth, wherein the first driving member 411 is a double-stroke oil cylinder or a common oil cylinder equipped with a displacement sensor.

Next, only the arrangement of the first guide member 31 and the second guide member 41 arranged on the first side surface 11 and the third side surface 13 will be described in detail.

As shown in FIG. 1 a , on the first side surface 11 , four first guide members 31 are symmetrically arranged on both sides of the longitudinal centerline K1 of the first side surface 11 , wherein two first guide members 31 are arranged on the first side surface One end of the 11 away from the milling wheel 20 and are arranged close to the third side 13 and the fourth side 14 respectively, and the other two first guide members 31 are arranged at one end of the first side 11 that is close to the milling wheel 20 and are respectively close to the third side 13 and the fourth side surface 14 , the first support surfaces 312 of the four first guide members 31 protrude from the first side surface 11 . Four second guide members 41 are symmetrically arranged on both sides of the longitudinal centerline K1 of the first side surface 11 , wherein two second guide members 41 are arranged at the end of the first side surface 11 away from the milling wheel 20 , and the other two The two guide pieces 41 are arranged at one end of the first side surface 11 close to the milling wheel 20 , and in the length direction of the first side surface 11 , the four second guide pieces 41 are located at the first guide pieces respectively provided at both ends of the first side surface 11 . between pieces 31. That is to say, on the first side surface 11 , the four first guide members 31 are arranged on the four corners of the first side surface, and the four second guide members 41 are also arranged at four corners within a relatively small range.

As shown in FIG. 1 b , on the third side surface 13 , four first guide members 31 are symmetrically arranged on both sides of the longitudinal center line K3 of the third side surface 13 , and two first guide members 31 are arranged on the third side surface 13 . The other two first guide members 31 are arranged at one end of the third side surface 13 close to the milling wheel 20 . It should be noted that, as shown in FIG. 5 , there should be a gap between the two first guide members 31 symmetrically arranged on both sides of the longitudinal center line K3 of the third side surface 13 , so that the two first guide members 31 A saddle-shaped through groove with upper and lower bell mouths is formed between the two bell mouths. When encountering the protrusion on the groove wall, the upper and lower bell mouth can make the protrusion be smoothly introduced and then pass through the through groove, so as to avoid the base of the milling tool holder. 10 is stuck. Two second guide pieces 41 are arranged along the lengthwise centerline K3 of the third side surface 13 , one of the second guide pieces 41 is arranged at the end of the third side surface 13 away from the milling wheel 20 , and the other second guide piece 41 is arranged at the end of the third side surface 13 away from the milling wheel 20 . One end of the third side surface 13 close to the milling wheel 20 , and in the length direction of the third side surface 13 , the two second guide members 41 are located between the first guide members 31 respectively disposed at both ends of the third side surface 13 .

Next, the working process of this embodiment will be described:

When the milling device of 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 at this time the first guide surface of the first guide assembly 30 is relative to the mounting surface of the milling tool holder base 10. The distance is greater than the distance between the second guide surface of the second guide assembly 40 relative to the same mounting surface of the milling tool holder base 10; when the milling tool holder base 10 enters the groove body along with the milling wheel 20, the first driving member 411 is pushed out to push The first top plate 412 is pushed out to a position where the plane used to form the second guide surface on the first top plate 412 is flush with the first support surface 312; when the base 10 of the milling tool holder is inclined, the first driving member 411 is controlled Further push out, so that the first top plate 412 is further pushed out until it touches the groove wall and interacts with each other, so as to correct the posture of the milling tool holder base 10; and when the bump on the slot wall is encountered, the milling tool holder base 10 fails to appear. When the groove is fed or the groove cannot be pulled out, the first driving member 411 is controlled to retract so that the base body 10 of the milling tool holder can smoothly feed or pull out the groove.

Through the description of the various embodiments of the slot milling machine milling device of the present invention, it can be seen that the embodiment of the slot milling machine milling device of the present invention has at least the following advantages:

1. Good guidance and high reliability: During 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 tool holder is fixed, thus ensuring the first guide assembly 30 The reliability and stability of the guide, and by further setting the second guide assembly 40, by adjusting the distance between the second guide surface and the outer surface of the base of the milling tool holder in real time, the distance between the second guide surface and the groove wall is improved. The gap is kept within a reasonable range, and the stability of the overall guidance can be further improved;

2. It has the function of correcting deviation, which can greatly improve the accuracy of groove forming: during the milling process of the groove milling machine, the distance between the second guide surface of the second guide assembly 40 and the installation surface of the milling tool holder can be adjusted. The contact between the surface and the groove wall generates a reaction force to rectify the posture of the base body of the milling tool holder, so as to avoid the large offset of the base body 10 of the milling tool holder, so as to ensure the slot forming accuracy of the slot milling machine;

3. Strong adaptability and convenient maintenance: the first guide assembly 30 is detachable, and the second guide assembly 40 includes an adjustable structure, so that the milling device of the slot milling machine can be applied to construction environments with different slot thicknesses, while the first guide assembly 30 has an adjustable structure. And the later replacement and maintenance of the second guide assembly 40 is also very convenient.

Based on the above-mentioned slot milling machine milling device, the present invention also provides a slot milling machine, which includes the above-mentioned slot milling machine milling device. 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, which will not be repeated here.

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 preferred embodiments, those of ordinary skill in the art should understand that: without departing from the Under the premise of the principle of the present invention, it is still possible to modify the specific embodiments of the present invention or perform equivalent replacements to some technical features, and these modifications and equivalent replacements should be included in the scope of the technical solutions claimed in the present invention.

Claims (18)

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.

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