CN116765479A - Milling device - Google Patents

Abstract

The utility model provides a mill high device, includes the base station that has the working face and at least one mill high subassembly of locating on this working face with the displacement mode, with this mill high subassembly and carry out high processing to the target object to accelerate production time course, improve production efficiency and reduce the human cost.

Description

Milling device

Technical Field

The invention relates to a burr treatment machine tool, in particular to a milling device.

Background

At present, the raised floor device is widely applied to an antistatic machine room or a dust-free room, wherein the raised floor formed by die casting of the existing aluminum alloy is manufactured by five main working procedures of die opening, aluminum melting, die casting, forming and trimming. Because there are many burrs on the surface and the bottom of raised floor in the shaping process, these flaw burrs can make unable closely laminating between the raised floor in the installation, also can't laminate between the platform frame, and on the other hand also is unfavorable for the workman to install, and can have certain safety concern to the workman.

However, in the existing mode, the burrs are removed by adopting a manual mode aiming at the four foot seats of the formed raised floor, so that the production efficiency is low, and a large amount of manpower is wasted in each processing, and the time and the labor are wasted.

Therefore, how to overcome the above-mentioned drawbacks of the prior art has become a major challenge in the industry.

Disclosure of Invention

The present invention is directed to a height milling device for solving at least one of the above problems.

In view of the above-mentioned drawbacks of the prior art, the present invention provides a height milling device comprising: a base having a working surface and two opposite side surfaces adjacent to the working surface; the positioning structure is arranged on the working surface to bear a target object and limit the displacement of the target object, wherein the target object is provided with a first surface and a second surface which are opposite, a side surface adjacent to the first surface and the second surface and a flange protruding out of the side surface, and a foot seat is arranged at a corner of the second surface; the plurality of transmission racks are arranged on two side surfaces of the base and protrude out of the working surface; the adjusting structures are arranged on two side surfaces of the base in a displaceable manner and are respectively arranged on two opposite sides of the positioning structure, wherein each adjusting structure is provided with an adjusting frame extending from the side surface to the working surface; the milling and elevating assembly is arranged on the adjusting frames of the adjusting structures in a displaceable manner so as to be respectively positioned on two opposite sides of the positioning structure, is used for milling and elevating the target object to process the end face of the foot seat of the target object, and comprises a plurality of milling cutter tools, a driving group for actuating the milling cutter tools, a supporting structure arranged on the adjusting frames in a displaceable manner and a plurality of bearing frames fixedly arranged on the supporting structure, wherein the plurality of milling cutter tools and the driving group are respectively arranged on two opposite sides of the bearing frames by virtue of the plurality of bearing frames, and an acting rack is arranged on the supporting structure; the power set is arranged on the adjusting frame in a displaceable manner and is positioned on the side surface of the base, and is provided with a transmission shaft positioned above the working surface and a transmission gear arranged on the transmission shaft, the transmission shaft is provided with an action thread part, the transmission gear is meshed with the transmission rack to enable the adjusting frame to lift relative to the base, the action thread part is meshed with the action rack to enable the supporting structure to displace relative to the adjusting frame, so that the power set can respectively lift the adjusting frame by rotating the transmission shaft to drive the height milling assembly to lift to a required height position and drive the height milling assembly to move towards or away from the positioning structure in a linear manner so as to mill the target.

In the above milling device, a stop portion is disposed at an outer side of the positioning structure to block a side surface of the target object.

In the foregoing milling device, the adjusting structure further includes a driving set disposed on the adjusting frame to push and pull the power set to move, so that the acting thread portion of the transmission shaft engages the acting rack, or the transmission gear engages the transmission rack.

In the above milling device, the power unit is disposed on the adjusting frame by the fixing base, and the adjusting frame is provided with a track, and the fixing base has a groove for engaging with the track, so that the fixing base can be displaced along the track.

The milling device further comprises a plurality of sliding blocks arranged at the bottom of the supporting structure and a plurality of sliding rails which are arranged on the adjusting frame and are correspondingly connected with the sliding blocks, so that the sliding blocks linearly move along the sliding rails, and the power unit drives the supporting structure and two bearing frames thereon and the driving unit and the milling cutter tool which are fixed on the bearing frames to move together for a certain distance relative to the base platform.

The milling device further comprises fixing parts correspondingly arranged on two opposite sides of the positioning structure so as to press the target object on the positioning structure.

The milling device further comprises a guide structure, wherein the guide structure comprises a sliding rail and a sliding seat connected with the sliding rail, the sliding rail is fixed on the side face of the base, the sliding seat is fixed on the adjusting frame, and the adjusting frame is arranged on the base through the guide structure, so that when the adjusting frame is lifted, the supporting structure and a milling cutter tool on the supporting structure can be driven to lift relative to the base.

In the foregoing height milling device, the supporting structure is provided with a limit baffle, and the base is provided with a limiter which abuts against the limit baffle, so that the position of the limit baffle is controlled by the limiter to control the displacement distance of the supporting structure.

In the foregoing height milling device, the height milling device is provided with two independent supporting structures and four independent bearing frames, and one independent supporting structure and two independent bearing frames are provided with two sets of units as one unit, so that the two sets are respectively arranged on two opposite sides of the positioning structure in parallel, and the two independent bearing frames in the single unit are respectively fixed on two opposite sides of one independent supporting structure, so that each milling cutter tool on the bearing frame is driven by the same power unit at the same time.

In the foregoing milling device, the carrier is an L-shaped frame body, which is symmetrically disposed on the left and right sides of the supporting structure, the opposite end sides of the carrier are respectively configured with a driving set and the milling cutter tool, and the end sides of the carrier facing the positioning structure are configured with the milling cutter tool, so that the milling cutter tool is actuated by the driving set.

In the foregoing height milling device, the supporting structure is an inverted T-shaped base, and the plurality of carrying frames are L-shaped frame bodies, which are symmetrically disposed on the left and right sides of the upright portion of the supporting structure, and the plurality of carrying frames are respectively configured with the plurality of driving sets and the plurality of milling tools on opposite end sides thereof.

Therefore, the milling device is mainly beneficial to adjusting the position of the milling component by virtue of the design of the transmission rack, the action rack, the adjusting structure and the transmission shaft, so that the milling component can accelerate the production time and improve the production efficiency when the height of the foot seat is processed aiming at the raised floor, and meanwhile, the labor cost is reduced.

Drawings

Fig. 1A is a schematic perspective view of a height milling device according to the present invention.

Fig. 1B is a schematic top perspective view of a target object to be processed by the height milling device of the present invention.

Fig. 1C is a schematic diagram of the lower view of fig. 1B.

Fig. 1D is a schematic left-hand view of fig. 1B.

Fig. 2A is a partially exploded perspective view of fig. 1A.

Fig. 2B is an enlarged partial schematic view of fig. 2A.

Fig. 2C is a partial perspective view of fig. 2A.

Fig. 2D is a partial perspective view of fig. 2A.

Fig. 3A is a schematic perspective view of the height milling device of fig. 1A in use.

Fig. 3B is a schematic left-hand view of fig. 3A.

Fig. 3C is a schematic top view of the milling device of fig. 3A in one state.

Fig. 3D is a partial top view of the milling device of fig. 3A in another state.

Description of the main reference numerals

1. Milling device

2a milling assembly

20. Milling cutter tool

20a body

200. Milling cutter

21. Base station

21c side

22. Positioning structure

22a frame body

220. Fixing part

221. Stop block

23. Supporting structure

23a limit baffle

23b limiter

24. Bearing frame

25. Transmission rack

25a guiding structure

250. Sliding rail

251. Slide seat

252. Positioning piece

26. Driving group

260. Belt with belt body

27. Adjusting structure

27a drive group

27b adjusting rack

270. Telescopic rod

271. Plate member

272. Rail track

273. An opening

28. Power unit

28a transmission shaft

280. Fixing seat

281. Action screw part

282. Transmission gear

29. Action rack

29a combination of guide rail and slide seat

290. Sliding block

291. Sliding rail

9. Target object

9a first surface

9b second surface

9c side

9d end face

90. Foot stand

91. Flange

d width

h height difference

S working surface

Arrow directions of X, Y and Z

Detailed Description

Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present invention by the following specific examples.

It should be understood that the structures, proportions, sizes, etc. shown in the drawings attached hereto are for the purpose of understanding and reading only and are not intended to limit the scope of the invention, which is defined by the appended claims, but rather by the appended claims. Also, the terms such as "upper", "lower", "front", "rear", "left", "right" and "a" and the like are used in this specification for convenience of description only and are not intended to limit the scope of the present invention, but the relative changes or modifications thereof are not to be construed as limitations of the present invention without substantial modification to the technical content.

Fig. 1A is a schematic perspective view of a milling device 1 according to the present invention. In this embodiment, the milling device 1 processes a target object 9 (shown in fig. 1B) such as a raised floor.

In the present embodiment, the direction of transporting the target object 9 according to the production line is defined as the left and right directions (e.g., arrow direction Y), the vertical direction of transportation is defined as the front and rear directions (e.g., arrow direction X), and the height direction along the height direction of the milling device 1 is defined as the up and down directions (e.g., arrow direction Z). It should be understood that this orientation is for illustration of the configuration of the present embodiment, and is not particularly limited.

The target 9 is a raised floor, as shown in fig. 1B, 1C and 1D, having opposing first and second surfaces 9a,9B (e.g., floor surfaces) and side surfaces 9C adjacent the first and second surfaces 9a, 9B. For example, the object 9 is substantially rectangular (e.g. square plate), the bottom of the object 9 (e.g. the side of the second surface 9b is the bottom of the raised floor) is honeycomb-shaped, and the feet 90 are formed at four corners of the second surface 9b of the object 9, so that openings are formed in the four feet 90, and the four feet 90 are respectively fixed to the supporting legs (not shown) for the raised floor by screws (not shown). Specifically, the end surface 9D of the foot stand 90 slightly protrudes (as shown in the height difference h of fig. 1D) from the second surface 9b of the target 9, and a flange 91 protruding from the side surface 9c is formed at the edge of the first surface 9 a. The target object 9 of the present embodiment is a raised floor, and therefore, the target object 9 will be hereinafter referred to as a raised floor.

The milling device 1 is used for removing burrs on the end surfaces 9d of the four foot seats 90 of the raised floor so as to process the raised floor to a required height.

Referring to fig. 2A to 2D, the height milling device 1 includes a base 21, a positioning structure 22 disposed on the base 21, a driving rack 25 disposed on the base 21, an adjusting structure 27 disposed on the base 21 in a displaceable manner, a height milling assembly 2A disposed on the adjusting structure 27 and around the positioning structure 22, and a power set 28 disposed on the adjusting structure 27 in a displaceable manner, wherein the adjusting structure 27 displaces the power set 28 to adjust a horizontal distance between the height milling assembly 2A and the positioning structure 22 and to lift the height milling assembly 2A relative to the positioning structure 22, so as to adjust a height milling amount of the target 9 (raised floor), and after the height milling amount is set, the height milling assembly is horizontally moved to process the foot stand 90 of the target 9, and after finishing the height milling treatment of the target 9, a transporting device (not shown) is made to move the target 9 away from the positioning structure 22.

The base 21 is a tool table, which is substantially rectangular (or cuboid), and the working surface S is also a rectangular (or rectangular) plane.

In the present embodiment, the electromechanical components required for the production line, such as motors, wires or other related units, can be disposed in the base 21, and are not particularly limited.

The positioning structure 22 is disposed in the middle of the working surface S of the base 21 to position and load the target 9.

In this embodiment, the positioning structure 22 is a frame, such as two parallel rows of straight frames 22a or square frames, and the height milling assemblies 2a (two groups are shown in this embodiment) are disposed on two opposite sides (front and rear sides) of the frames 22a, and at least one fixing portion 220 (such as a corner cylinder fixture) can be disposed on the outer sides of the two opposite sides of the positioning structure 22 according to requirements. In use, the fixing portion 220 is a corner cylinder clamp, which can be disposed on one side of each frame 22a to fix the raised floor on the base 21, so that the displacement of the raised floor can be limited to avoid deviating from the positioning structure 22 during the milling operation.

Further, if the object 9 is to be placed manually, at least one stop portion 221 may be disposed on the outer side of the positioning structure 22 (e.g., the other side perpendicular to the side of the positioning structure 22 on which the corner cylinder clamp is disposed), where the stop portion 221 blocks the side surface 9c of the raised floor, so as to facilitate the operator to push the object 9 onto the positioning structure 22 (e.g., in the arrow direction Y). It should be understood that the object 9 to be processed may also be gripped from a feed location (not shown) by means of a conveyor (not shown) and placed in a processing position on the positioning structure 22.

The two sets of milling units 2a of the present embodiment are symmetrically disposed on opposite sides (front and rear sides) of the positioning structure 22, and each of the milling units 2a includes a plurality of milling tools 20, a plurality of supporting structures 23 movably disposed on the adjusting structure 27, and a carrier 24 respectively disposed on both sides of the supporting structures 23 and supporting the plurality of milling tools 20, so that the carrier 24 and the milling tools 20 thereon are moved toward or away from the positioning structure 22 by the displacement of the supporting structures 23 relative to the base 21.

In this embodiment, the milling device 1 is provided with two independent supporting structures 23 and four independent supporting frames 24, and one independent supporting structure 23 and two independent supporting frames 24 are used as a set (two sets of sets or milling components 2 a), so that the two sets are respectively arranged on two opposite sides of the positioning structure 22 in parallel, and the two independent supporting frames 24 in a single set are respectively fixed on two opposite sides of one independent supporting structure 23, so that two milling tools 20 on the supporting frame 24 can be driven by the same power set 28 at the same time, and the two power sets 28 simultaneously drive the two supporting structures 23 to advance and retreat, so as to rapidly and simultaneously process four foot seats 90 of the target 9 to a required height, wherein the milling tool 20 is provided with a milling tool 200 at the bottom end of the body 20a thereof. It should be appreciated that the variety of the milling cutter 200 is not particularly limited.

Furthermore, the supporting structure 23 is an inverted T-shaped base, and the carrier 24 is an L-shaped frame symmetrically disposed on the left and right sides of the upright portion of the supporting structure 23, the carrier 24 is respectively provided with a driving set 26 and the milling tool 20 on opposite end sides thereof, and the carrier 24 is provided with the milling tool 20 on the end side facing the positioning structure 22 to actuate the milling tool 20 by the driving set 26. Specifically, the driving set 26 is a motor, which drives the milling tool 20 to rotate by means of the belt 260 to mill the foot 90 of the target 9 to a desired height.

In addition, the supporting structure 23 is disposed above the working surface S of the base 21 in a displaceable manner, and a plurality of adjusting structures 27 for driving the plurality of supporting structures 23 to displace and a plurality of power sets 28 disposed on the plurality of adjusting structures 27 are disposed on the working surface S of the base 21, wherein an acting rack 29 parallel to the working surface S is disposed on the bottom surface of the bottom plate portion of the supporting structure 23, as shown in fig. 2C, and the acting rack 29 is disposed along the front-rear direction (as indicated by arrow direction X).

The power unit 28 is a motor, which is movably disposed on the adjusting frame 27b by a fixing seat 280, and has a driving shaft 28a above the working surface S and a driving gear 282 disposed on the driving shaft 28a, and an acting thread portion 281, such as a worm, is disposed at the end of the driving shaft 28 a.

The adjusting structure 27 includes an adjusting frame 27b, such as an L-shaped frame, and a driving set 27a disposed on the adjusting frame 27 b.

In the present embodiment, the adjusting frame 27b is used for mounting the fixing seat 280, the sliding rail 291 and the supporting structure 23, and the driving set 27a is a cylinder mechanism or other telescopic mechanism, so that the telescopic rod 270 drives the plate 271 at the end thereof to push and pull the power set 28 to move in the left-right direction. Specifically, as shown in fig. 2B, the adjusting frame 27B has two rails 272 on the frame corresponding to the side surface 21c, and the fixing base 280 has grooves (not shown) for engaging the two rails 272, so that the fixing base 280 is moved left and right along the rails 272, and the power set 28 is moved left and right (as indicated by arrow Y) relative to the adjusting frame 27B.

When the driving set 27a pushes the power set 28 to move to the left fixed point, the power set 28 can drive the supporting structure 23 to move back and forth. In this embodiment, the action screw portion 281 disposed at the end of the transmission shaft 28a of the power unit 28 is engaged with the action rack 29 disposed on the supporting structure 23, so that when the power unit 28 drives the transmission shaft 28a to rotate the action screw portion 281, the action rack 29 and the action screw portion 281 can relatively displace to drive the supporting structure 23 to linearly reciprocate along the front-back direction (as shown by arrow direction X) for a certain distance (which is greater than or equal to the width D of the foot stand 90, as shown in fig. 1D), so that the power unit 28 drives the supporting structure 23 to approach or separate from the positioning structure 22, and at least one limit baffle 23a can be disposed on the side surface of the supporting structure 23, and at least one limit stopper 23b can be disposed on the base 21, so as to control the machining stroke of the milling tool 20 by the position where the limit baffle 23a contacts the limit stopper 23 b.

Preferably, a combination 29a of a guide rail and a sliding seat is configured with a plurality of sliding blocks 290 as sliding seats on the bottom of the supporting structure 23, and a plurality of sliding rails 291 correspondingly engaged with the sliding blocks 290 are configured on the frame body table surface of the adjusting frame 27b corresponding to the working surface S as guide rails, so that the sliding blocks 290 can linearly move along the sliding rails 291, and the power set 28 can simultaneously drive the supporting structure 23 and the two bearing frames 24 thereon, and the driving set 26 fixed on the bearing frames 24 and the milling tool 20 to move together by a certain distance (greater than or equal to the width d of the foot seat 90) relative to the base 21, so as to process the end surfaces 9d of the four foot seats 90 to achieve the required height of the raised floor.

When the driving set 27a pulls the power set 28 to move to the right fixed point, the driving gear 282 disposed on the driving shaft 28a of the power set 28 engages with a driving rack 25 fixed on the side 21c of the base 21, so that the supporting structure 23 and the carrier 24 can be lifted (move up and down in the arrow direction Z) relative to the base 21. For example, the driving rack 25 passes through the opening 273 (as shown in fig. 2B) of the adjusting frame 27B to protrude from the working surface S, so that the driving gear 282 can engage with the driving rack 25, and when the driving unit 28 drives the driving shaft 28a to rotate the driving gear 282, the driving rack 25 and the driving gear 282 can relatively move, so that the fixing base 280 and the adjusting frame 27B can move up and down along the arrow direction Z relative to the base 21, and the supporting structure 23 is disposed on the adjusting frame 27B, so that the carrying frame 24 can be lifted together (as shown by the arrow direction Z), and the milling tool 20 can be moved to a desired height position.

Preferably, the adjusting frame 27b is disposed on the side 21c of the base 21 by a guiding structure 25a, and the guiding structure 25a comprises a sliding rail 250 and a sliding seat 251 engaged with the sliding rail 250, wherein the sliding rail 250 is fixed on the side 21c of the base 21, and the sliding seat 251 is fixed on the adjusting frame 27b, so that when the driving gear 282 and the driving rack 25 are relatively displaced, the adjusting frame 27b and the supporting structure 23 thereon can move linearly along the up-down direction (like arrow direction Z) on the sliding rail 250 to adjust the milling tool 20 to the height required for machining the foot stand 90. In particular, the milling tool 20 is capable of milling the four foot seats 90 of the object 9 to a desired height, such as from 56 mm for the pre-milling raised floor to 55 mm after milling.

It should be appreciated that, after the sliding base 251 is lifted to the fixed point (i.e. the machining position on the sliding rail 250), the sliding base 251 can be fixed by a positioning member 252 such as a sliding rail fixer, as shown in fig. 2D, so as to position the adjusting frame 27b and the supporting structure 23 thereon, so as to prevent the adjusting frame 27b from sliding down.

When the milling device 1 is used in a production line, as shown in fig. 3A and 3B, a target 9 is placed on the positioning structure 22 of the milling device 1 by a transporting device or manually, and the fixing portion 220 is simultaneously rotated and lowered to press the second surface 9B of the target 9, and the stop portion 221 abuts against the side surface 9c of the target 9.

Then, the power set 28 is shifted to the right to the fixed point, as shown in fig. 3C, the driving gear 282 is engaged with the driving rack 25, so that the power set 28 rotates the driving shaft 28a to raise and lower the adjusting frame 27b and the supporting structure 23 thereon together, thereby finely adjusting the height position of the milling cutter 200, so that the milling cutter tool 20 is raised and lowered to the height position of the desired milling amount.

After the milling amount is set, the power set 28 is moved to the left to a fixed point, as shown in fig. 3D, the action screw portion 281 engages with the action rack 29, so that the support structure 23 is moved back and forth by rotating the transmission shaft 28a by the power set 28, and the driving set 26 rotates the milling cutter 200 of the milling tool 20 to mill burrs on the end surfaces 9D of the four seats 90 of the target 9, so that the milling assembly 2a processes the raised floor to a desired height dimension.

In summary, the height milling device 1 of the present invention is mainly designed by the driving rack 25 (for lifting/adjusting height), the acting rack 29 (for moving far/near/adjusting horizontal) and the adjusting mechanism (for adjusting the structure 27 to drive the driving shaft 28a to move to switch the adjusting items), so as to facilitate adjusting the position of the height milling component 2a, so that the height milling component 2a can accelerate the production time and increase the production efficiency when the height of the footstand 90 is processed for the raised floor, and simultaneously reduce the labor cost.

The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications to the above would be obvious to those of ordinary skill in the art, without departing from the spirit and scope of the present invention. The scope of the invention is therefore intended to be indicated by the appended claims.

Claims (11)

1. A height milling device comprising:

a base having a working surface and two opposite side surfaces adjacent to the working surface;

the positioning structure is arranged on the working surface to bear a target object and limit the displacement of the target object, wherein the target object is provided with a first surface and a second surface which are opposite, a side surface adjacent to the first surface and the second surface and a flange protruding out of the side surface, and a foot seat is arranged at a corner of the second surface;

the plurality of transmission racks are arranged on two side surfaces of the base and protrude out of the working surface;

the adjusting structures are arranged on two side surfaces of the base in a displaceable manner and are respectively arranged on two opposite sides of the positioning structure, wherein each adjusting structure is provided with an adjusting frame extending from the side surface to the working surface;

the milling and elevating components are arranged on the adjusting frames of the adjusting structures in a displaceable manner and are respectively positioned at two opposite sides of the positioning structure for milling and elevating the target object to process the end face of the foot seat of the target object, each milling and elevating component comprises a plurality of milling cutter tools, a plurality of driving groups for actuating the milling cutter tools, a supporting structure arranged on the adjusting frames in a displaceable manner and a plurality of bearing frames fixedly arranged on the supporting structure, wherein the milling cutter tools and the driving groups are respectively arranged at two opposite sides of the bearing frames by virtue of the bearing frames, and the supporting structure is provided with an acting rack; and

the power set is arranged on the adjusting frame in a displaceable manner and is positioned on the side surface of the base, and is provided with a transmission shaft positioned above the working surface and a transmission gear arranged on the transmission shaft, the transmission shaft is provided with an action thread part, the transmission gear is meshed with the transmission rack to enable the adjusting frame to lift relative to the base, the action thread part is meshed with the action rack to enable the supporting structure to displace relative to the adjusting frame, so that the power set can respectively lift the adjusting frame by rotating the transmission shaft to drive the height milling assembly to lift to a required height position, and drive the height milling assembly to move towards or away from the positioning structure in a straight line mode to perform height milling treatment of the target.

2. The height milling device according to claim 1, wherein a stop is provided on the outer side of the positioning structure to block the side of the object.

3. The milling height device of claim 1, wherein the adjusting structure further comprises a driving set arranged on the adjusting frame to push and pull the driving set to displace, so that the action thread part of the transmission shaft is meshed with the action rack, or the transmission gear is meshed with the transmission rack.

4. The milling device of claim 1, wherein the power unit is disposed on the adjusting frame by a fixing base, a rail is disposed on the adjusting frame, and the fixing base has a groove for engaging with the rail, so that the fixing base can be displaced along the rail.

5. The height milling device according to claim 1, wherein the device further comprises a plurality of sliding blocks arranged at the bottom of the supporting structure and a plurality of sliding rails arranged on the adjusting frame and correspondingly connected with the sliding blocks, so that the sliding blocks linearly move along the sliding rails, and the power unit simultaneously drives the supporting structure and two bearing frames thereon, and the driving unit fixed on the bearing frames and the milling cutter tool together move a certain distance relative to the base platform.

6. The height milling device of claim 1, wherein the device further comprises fixing parts correspondingly arranged on two opposite sides of the positioning structure to press the target object on the positioning structure.

7. The milling height device according to claim 1, wherein the device further comprises a guiding structure comprising a sliding rail and a sliding seat connected with the sliding rail, the sliding rail is fixed on the side surface of the base, the sliding seat is fixed on the adjusting frame, so that the adjusting frame is arranged on the base by the guiding structure, and when the adjusting frame is lifted, the supporting structure and the milling cutter tool thereon can be driven to lift relative to the base.

8. The milling height device according to claim 1, wherein the supporting structure is provided with a limit baffle, and the base is provided with a limiter which abuts against the limit baffle, so that the displacement distance of the supporting structure is controlled by controlling the position of the limit baffle through the limiter.

9. The milling height device according to claim 1, wherein the milling height device is provided with two independent supporting structures and four independent bearing frames, and one independent supporting structure and two independent bearing frames are provided with two sets of sets as a set, so that the two sets of sets are respectively arranged on two opposite sides of the positioning structure in parallel, and the two independent bearing frames in a single set are respectively fixed on two opposite sides of one independent supporting structure, so that each milling cutter tool on the bearing frame is simultaneously driven by one power set.

10. The milling height device according to claim 1, wherein the carrier is an L-shaped frame body symmetrically disposed on the left and right sides of the supporting structure, the carrier is respectively provided with a driving set and the milling cutter tool on opposite end sides thereof, and the carrier is provided with the milling cutter tool on the end side facing the positioning structure so as to actuate the milling cutter tool by the driving set.

11. The height milling device according to claim 1, wherein the supporting structure is an inverted T-shaped base, and the plurality of carrying frames are L-shaped frame bodies symmetrically arranged on the left and right sides of the upright portion of the supporting structure, and the plurality of carrying frames are respectively provided with the plurality of driving sets and the plurality of milling tools on opposite end sides thereof.