TWI807682B - Milling height device - Google Patents

Abstract

This invention provides a milling height device comprising a base with a work surface and at least one milling height component which is displaceably disposed on the work surface. The milling height component is used to perform a height process of a target, so that it can speed up the production time and improve production efficiency, while reducing labor cost.

Description

Milling device

The invention relates to a machine tool for processing burrs, in particular to a height milling device.

At present, raised floor devices are widely used in anti-static computer rooms or clean rooms. Among them, the existing aluminum alloy die-cast raised floor needs to go through five main processes such as mold opening, aluminum melting, die-casting, molding, and trimming. During the molding process, there will be many burrs on the surface and bottom of the raised floor. During the installation process, these flawed burrs will prevent the raised floor from being closely fitted, and cannot be fitted to the platform frame. On the other hand, it is not conducive to the installation of the workers, and there will be certain safety concerns for the workers.

However, in the existing method, it is necessary to manually remove the burrs of the four feet of the formed elevated floor, which not only has low production efficiency, but also wastes a lot of manpower and is time-consuming and laborious for each processing.

Therefore, how to overcome the various deficiencies of the above-mentioned conventional technologies has become a difficult problem to be overcome urgently in the industry.

In view of the lack of the above-mentioned prior art, the present invention provides a milling device, which includes: a base, which has a working surface and opposite side surfaces adjacent to the working surface; a positioning structure, which is arranged on the working surface to carry a target and limit the displacement of the target, wherein the target has a first surface and a second surface opposite, a side adjacent to the first surface and the second surface, and a flange protruding from the side, and the corner of the second surface has a foot; The working surface; the plurality of adjustment structures are displaceably arranged on both sides of the abutment and are arranged on opposite sides of the positioning structure respectively, wherein each adjustment structure has an adjustment frame extending from the side to the work surface; the milling height assembly is displaceably arranged on the adjustment frame of the plurality of adjustment structures so as to be respectively located on the opposite sides of the positioning structure for processing the height of the target and processing the end face of the foot of the target, and the height milling assembly includes multiple milling tools, actuating the milling The driving group of the cutter tool, a supporting structure displaceably arranged on the adjustment frame, and a plurality of bearing frames fixed on the supporting structure, wherein, the plurality of milling cutter tools and the driving group are mounted on the supporting structure through the plurality of bearings, and the milling cutter tool and the driving group are respectively arranged on opposite sides of the carrier frame, and the supporting structure is provided with an active rack; The upper transmission shaft and a transmission gear arranged on the transmission shaft, the transmission shaft system has an active threaded part, and the transmission gear engages the transmission rack to make the adjustment frame move up and down relative to the abutment, and the active thread part engages the active rack to make the support structure move relative to the adjustment frame, so that the power group can respectively lift the adjustment frame by rotating the transmission shaft to drive the milling height assembly to the desired height position, and drive the milling height assembly to move toward the positioning structure to approach or move away from the linear motion to achieve the target After milling high processing.

In the aforementioned height milling device, a stopper is configured on the outer side of the positioning structure to block the side of the target.

In the aforesaid height milling device, the adjustment structure further includes a drive group arranged on the adjustment frame, to push and pull the displacement of the power group, so that the active threaded part of the transmission shaft engages the active rack, or the transmission gear engages the transmission rack.

In the aforementioned height milling device, the power group is arranged on the adjusting frame through a fixed seat, and a track is provided on the adjusting frame, and the fixed seat has a groove engaging the track, so that the fixed seat can be displaced along the track.

In the aforementioned height milling device, it includes a plurality of sliders arranged at the bottom of the support structure, and a plurality of slide rails arranged on the adjustment frame and correspondingly engaged with the sliders, so that the sliders move linearly along the slide rails, so that the power group simultaneously drives the support structure and the two bearing frames on it, and the driving group fixed on the carrier frame and the milling cutter tool are displaced a certain distance relative to the base.

In the above-mentioned height milling device, it further includes fixing parts correspondingly arranged on opposite sides of the positioning structure, so as to press the target object on the positioning structure.

In the aforementioned height milling device, a guide structure is further included, which includes a slide rail and a slide seat joined to the slide rail, the slide rail is fixed on the side of the base, and the slide seat is fixed on the adjustment frame, so that the adjustment frame is arranged on the base via the guide structure, so that when the adjustment frame is raised and lowered, the support structure and the milling cutter tool on it can be driven up and down relative to the base.

In the aforementioned height milling device, a limit baffle is provided on the support structure, and a stopper against the limit baffle is provided on the base, so that the position of the limit baffle is controlled by the stopper to control the displacement distance of the support structure.

In the aforementioned 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 used as a unit to set up two groups of units, so that the two units are respectively arranged in parallel on opposite sides of the positioning structure, and the two independent bearing frames in a single unit are respectively fixed on opposite sides of an independent supporting structure, so that each milling cutter tool on the bearing frame is driven by the same power group at the same time.

In the aforementioned height milling device, the carrier is an L-shaped frame, which is symmetrically arranged on the left and right sides of the supporting structure. The carrier is equipped with a driving group and the milling tool on its opposite two ends, and the carrier is arranged on the end side facing the positioning structure. The milling tool is actuated by the driving group.

In the aforementioned height milling device, the support structure is an inverted T-shaped seat, and the plurality of bearing frames are L-shaped frames, which are symmetrically arranged on the left and right sides of the upright part of the support structure, and the plurality of drive groups and the plurality of milling cutter tools are respectively arranged on the opposite ends of the plurality of bearing frames.

It can be seen from the above that the height milling device of the present invention mainly uses the design of the transmission rack, the action rack, the adjustment structure and the transmission shaft to facilitate the adjustment of the position of the height milling component, so that the height milling component can speed up the production time and improve the production efficiency while reducing labor costs when processing the height of the feet for the raised floor.

The implementation of the present invention is described below through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

It should be noted that the structures, proportions, and sizes shown in the drawings attached to this specification are only used to match the content disclosed in the specification for the understanding and reading of those who are familiar with this technology, and are not used to limit the conditions for the implementation of the present invention, so they have no technical significance. At the same time, terms such as "upper", "lower", "front", "rear", "left", "right" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the present invention. Changes or adjustments of their relative relationships should also be regarded as the scope of the present invention if there is no substantial change in the technical content.

FIG. 1A is a three-dimensional schematic diagram of a height milling device 1 of the present invention. In this embodiment, the height milling device 1 processes an object 9 such as a raised floor (as shown in FIG. 1B ).

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

The target object 9 is a raised floor, as shown in Fig. 1B, Fig. 1C and Fig. 1D, it has a first surface 9a (such as a floor surface) and a second surface 9b (such as a bottom end) opposite and a side 9c adjacent to the first and second surfaces 9a, 9b. For example, the target 9 is roughly rectangular (such as a square plate), and the bottom of the target 9 (such as the side of the second surface 9b, which is the bottom of the raised floor) is honeycomb-shaped, and feet 90 are formed on the four corners of the second surface 9b of the target 9, so that openings are set on the four feet 90, and the four feet 90 are respectively fixed on the supporting feet of the raised floor (not shown) using screws (not shown). Specifically, the end surface 9d of the foot seat 90 slightly protrudes (as shown by the height difference h shown in FIG. 1D ) the second surface 9b of the target object 9, and a flange 91 protruding from the side surface 9c is formed on the edge of the first surface 9a. The target object 9 of the present embodiment is a raised floor, so the target object 9 is called a raised floor below.

The described height milling device 1 is used to remove the burrs of the end faces 9d of the four feet 90 of the raised floor, so as to process the raised floor to the required height dimension.

Please refer to Figure 2A to Figure 2D. The milling height device 1 series includes a base of one base platform 21. The positioning structure set on the base platform 21 22. The transmission shift on the base platform 21 25. The adjustment structure of the adjustable method on the base platform 21 is set on the adjustment structure 27 and located on the positioning structure 22. And the dynamic group 28 on the adjustment structure 27 in the method of displacement, so that the adjustment structure 27 -bit displacement of the power group 28 and adjust the high component of the milling high component 2A to the level of the positioning structure 22 and make the milling high component 2A from 22 liters from the positioning structure to the high processing volume of the target 9 (elevated floor), and the high processing volume setting of the milling is set. After the completion, the horizontal movement is performed to process the foot 90 of the target 9, and after completing the high processing of the target 9, the transport device (diagram) will remove the target 9 from the positioning structure 22.

The abutment 21 is a tool workbench, which is roughly rectangular (or cuboid), and its working surface S is also rectangular (or rectangular) plane.

In this embodiment, the electromechanical components required by the production line, such as motors, wires or other related units, can be arranged in the base 21 without any special limitation.

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

In this embodiment, the positioning structure 22 is a frame body, such as two straight frame bodies 22a or a square frame body arranged in parallel, and the height-milling components 2a (two groups are shown in this embodiment) are arranged on opposite sides (such as front and rear sides) of the frame bodies 22a, and at least one fixing part 220 (such as a corner cylinder clamp) can be configured on the outside of the opposite two sides of the positioning structure 22 as required. When in use, the fixing part 220 is a corner cylinder fixture, at least one of which can be arranged on one side of each of the frame bodies 22a to fix the raised floor on the base 21, so that the raised floor can be limited in displacement and avoid deviating from the positioning structure 22 during the milling operation.

Further, if it is desired to manually place the target object 9, at least one stopper 221 can be arranged outside the positioning structure 22 (such as the other side perpendicular to the side where the corner cylinder fixture is arranged on the positioning structure 22), and the stopper portion 221 blocks the side 9c of the raised floor, so as to facilitate the operator to push the target object 9 (such as in the direction of the arrow Y) on the positioning structure 22. It should be understood that the object 9 to be processed can also be picked up from the feeding place (not shown) by a transport device (not shown) and placed on the processing position on the positioning structure 22 .

The two groups of high-milling components 2a of the present embodiment are arranged symmetrically on opposite sides (such as front and rear sides) of the positioning structure 22, and each high-milling component 2a includes a plurality of milling cutter tools 20, a plurality of support structures 23 disposed on the adjustment structure 27 in a displaceable manner, and a carrier 24 respectively arranged on both sides of the support structure 23 and erecting the milling cutter tools 20. The support structure 23 is displaced relative to the base 21, so that the carrier 24 and its upper The milling tool 20 approaches or moves away from the positioning structure 22 .

In the present embodiment, the height milling device 1 is provided with two independent supporting structures 23 and four independent bearing frames 24, and an independent supporting structure 23 and two independent bearing frames 24 are used as a unit (a total of two groups of units or milling height components 2a), so that the two units are respectively arranged in parallel on opposite sides of the positioning structure 22, and the two independent bearing frames 24 in a single unit are respectively fixed on opposite sides of an independent supporting structure 23, so that the two milling tools on the bearing frame 24 20 can be driven by the same power pack 28 at the same time, and two power packs 28 simultaneously drive the two support structures 23 forward and backward, so as to quickly and simultaneously process the four feet 90 of the target object 9 to the required height, wherein the milling tool 20 is equipped with a milling cutter 200 at the bottom of its body 20a. It should be understood that there are various types of milling cutters 200 and there is no special limitation.

Furthermore, the support structure 23 is an inverted T-shaped seat body, and the carrier frame 24 is an L-shaped frame body, which is symmetrically arranged on the left and right sides of the upright part of the support structure 23. Specifically, the driving group 26 is a motor, which drives the milling cutter tool 20 to rotate through the belt 260, so as to mill the foot seat 90 of the target object 9 to a required height.

Also, the support structure 23 is disposed above the working surface S of the base 21 in a displaceable manner, and the working surface S of the base 21 is provided with a plurality of adjustment structures 27 that drive the displacement of the support structures 23 and a plurality of power groups 28 arranged on the adjustment structures 27, wherein, the bottom surface of the bottom plate of the support structure 23 is configured with a working rack 29 parallel to the working surface S, as shown in FIG. ) configuration.

The power group 28 is a motor, which is displaceably arranged on the adjustment frame 27b by a fixed seat 280, and has a transmission shaft 28a positioned above the working surface S and a transmission gear 282 arranged on the transmission shaft 28a. The end of the transmission shaft 28a has a function threaded portion 281 like a worm.

The adjustment structure 27 includes an adjustment frame 27b such as an L-shaped plate frame and a driving group 27a arranged on the adjustment frame 27b.

In this embodiment, the adjusting frame 27b is used to set up the fixing seat 280, the slide rail 291 and the support structure 23, and the driving group 27a is a cylinder mechanism or other telescopic mechanism, so that the telescopic rod 270 drives the plate 271 at its end to push and pull the power group 28 to move in the left and right direction. Specifically, as shown in FIG. 2B, the adjustment frame 27b is provided with two rails 272 on the frame body corresponding to the side 21c, and the fixing base 280 has a groove (not shown) engaging the two rails 272, so that the fixing base 280 can be displaced left and right along the rails 272, so that the power pack 28 can be displaced in the left and right directions (such as the arrow direction Y) relative to the adjustment bracket 27b.

When the driving group 27a pushes the power group 28 to move to the left fixed point, the power group 28 can drive the supporting structure 23 to move back and forth. In this embodiment, the active threaded portion 281 disposed on the transmission shaft 28a end of the power pack 28 engages with the active rack 29 on the support structure 23, so when the power pack 28 drives the transmission shaft 28a to rotate the active threaded portion 281, the active rack 29 and the active threaded portion 281 can be displaced relatively to drive the support structure 23 along the front and rear directions (such as the direction of the arrow X) for linear reciprocating movement for a certain distance (which is greater than or equal to the foot seat The width d of 90, as shown in Figure 1D), causes the power group 28 to drive the support structure 23 close to or away from the positioning structure 22, and at least one stopper 23a can be set on the side of the support structure 23, and at least one stopper 23b can be set on the base 21, so as to control the machining stroke of the milling tool 20 by the position where the stopper 23a contacts the stopper 23b.

Preferably, a combination 29a of a guide rail and a slide seat is configured at the bottom of the support structure 23 with a plurality of slide blocks 290 as a slide seat, and a plurality of slide rails 291 corresponding to the sliding block 290 are arranged on the frame surface of the adjustment frame 27b corresponding to the working surface S as a guide rail, so that the slide block 290 moves linearly along the slide rail 291, so that the power group 28 can simultaneously drive the support structure 23 and the two bearing frames 24 fixed on the support frame The driving group 26 on the 24 and the milling tool 20 are displaced a certain distance relative to the base 21 (greater than or equal to the width d of the feet 90) to process the end faces 9d of the four feet 90 to achieve the required height of the raised floor.

When the driving group 27a pulls the power group 28 to move to the fixed point on the right side, the transmission gear 282 disposed on the transmission shaft 28a of the power group 28 will mesh with a transmission rack 25 fixed on the side surface 21c of the base 21, so that the supporting structure 23 and the carrier 24 can be raised and lowered relative to the base 21 (moving up and down in the direction of the arrow Z). For example, the transmission rack 25 passes through the opening 273 of the adjustment frame 27b (as shown in FIG. 2B ) to protrude from the working surface S, so that the transmission gear 282 can engage the transmission rack 25, so when the power group 28 drives the transmission shaft 28a to rotate the transmission gear 282, the transmission rack 25 and the transmission gear 282 can be displaced relative to each other, so that the fixed seat 280 and the adjustment frame 27b move up and down relative to the base 21 in the direction of the arrow Z Movement, because the support structure 23 is arranged on the adjustment frame 27b, the carrier frame 24 can be raised and lowered together (as shown in the arrow direction Z), and the milling cutter tool 20 can be displaced to a desired height position.

Preferably, the adjustment frame 27b can be arranged on the side surface 21c of the base 21 through a guide structure 25a, and the guide structure 25a includes a slide rail 250 and a slide seat 251 engaging the slide rail 250, wherein the slide rail 250 is fixed on the side surface 21c of the base base 21, and the slide seat 251 is fixed on the adjustment frame 27b, so when the transmission gear 282 and the transmission rack 25 are displaced relative to each other, the adjustment The frame 27b and the support structure 23 on it can move linearly along the up and down directions (such as the arrow direction Z) on the slide rail 250 to adjust the milling cutter tool 20 to the required height of the foot seat 90 to be processed. Specifically, the milling cutter tool 20 can mill out the required height of the four feet 90 of the target object 9, such as from 56 mm of the height of the raised floor before milling to 55 mm after milling.

It should be understood that after the sliding seat 251 is lifted to a fixed point (i.e. the processing position on the slide rail 250), the sliding seat 251 can be fixed by a positioning member 252 as a slide rail fixer, as shown in FIG.

When using the height milling device 1 on the production line, as shown in Figure 3A and Figure 3B, a target 9 is placed on the positioning structure 22 of the height milling device 1 by means of a transport device or manually, and the fixing part 220 is simultaneously rotated and lowered to suppress the second surface 9b of the target 9, and the stopper 221 abuts against the side 9c of the target 9.

Then, the power group 28 is displaced to a fixed point toward the right side, as shown in FIG. 3C, the transmission gear 282 is engaged with the transmission rack 25, and the adjustment frame 27b and the supporting structure 23 on it are lifted together by the power group 28 rotating the transmission shaft 28a, so that the height position of the milling cutter 200 can be fine-tuned, so that the milling cutter tool 20 is lifted to the height position of the required milling height.

After the setting of the milling height is completed, the power group 28 is displaced to a fixed point toward the left, as shown in FIG. 3D , so that the action threaded portion 281 engages the action rack 29, so that the power unit 28 rotates the transmission shaft 28a to displace the support structure 23 forward and backward, and the drive group 26 rotates the milling cutter 200 of the milling tool 20 to mill burrs on the end faces 9d of the four feet 90 of the target object 9, so that the milling assembly 2a processes the raised floor to the desired height dimension.

To sum up, the height milling device 1 of the present invention mainly uses the design of the drive rack 25 (for lifting/adjusting height), the action rack 29 (for near/near distance/adjusting horizontal displacement) and the adjustment mechanism (the adjustment structure 27 drives the displacement of the transmission shaft 28a to switch the adjustment items), so as to facilitate the adjustment of the position of the height milling component 2a, so that the height milling component 2a can speed up the production schedule and improve production efficiency while reducing labor costs when the height milling component 2a is processing the height of the feet 90 for the raised floor.

The above-mentioned embodiments are used to illustrate the principles and effects of the present invention, but not to limit the present invention. Any person skilled in the art can modify the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the rights of the present invention should be the same as the scope of the patent application described later.

1: High milling device 2a: Milling height components 20: Milling tool 20a: Ontology 200: milling cutter 21: Abutment 21c: side 22: Positioning structure 22a: frame body 220: fixed part 221: stop part 23: Support structure 23a: limit baffle 23b: limiter 24: Bearing frame 25: Drive rack 25a: Guidance structure 250: slide rail 251: sliding seat 252: Positioning piece 26: Drive group 260: belt 27: Adjust the structure 27a: Driving group 27b: Adjustment frame 270: telescopic rod 271: plate 272: track 273: opening 28: Power group 28a: Drive shaft 280: fixed seat 281: Function thread part 282: Transmission gear 29: Action rack 29a: Combination of guide rail and slide seat 290:Slider 291: slide rail 9: Target 9a: first surface 9b: second surface 9c: side 9d: end face 90: foot seat 91: Flange d: width h: height difference S: working surface X, Y, Z: Arrow direction

Fig. 1A is a three-dimensional schematic view of the height milling device of the present invention.

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

FIG. 1C is a schematic bottom view of FIG. 1B .

FIG. 1D is a schematic left view of FIG. 1B .

FIG. 2A is a three-dimensional partial exploded view of FIG. 1A.

FIG. 2B is a partially enlarged schematic diagram 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 three-dimensional schematic view of the height milling device of FIG. 1A in use.

FIG. 3B is a schematic left view of FIG. 3A.

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

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

1: High milling device

2a: Milling height components

20: Milling tool

20a: Ontology

200: milling cutter

21: Abutment

21c: side

22: Positioning structure

22a: frame body

220: fixed part

221: stop part

23: Support structure

23a: limit baffle

23b: Limiter

24: Bearing frame

25a: Guidance structure

26: Drive group

260: belt

27: Adjust the structure

27a: Driving group

27b: Adjustment frame

28: Power group

280: fixed seat

29a: Combination of guide rail and slide seat

290:Slider

291: slide rail

S: working surface

X, Y, Z: Arrow direction

Claims (11)

A height milling device, comprising: an abutment having a working surface and opposite sides adjoining the working surface; The positioning structure is arranged on the working surface to carry the target and limit the displacement of the target, wherein the target has an opposite first surface and a second surface, a side adjacent to the first surface and the second surface, and a flange protruding from the side, and a corner of the second surface has a foot seat; A plurality of transmission racks are arranged on both sides of the abutment and protrude from the working surface; A plurality of adjustment structures are disposed on both sides of the abutment in a displaceable manner and are respectively disposed on opposite sides of the positioning structure, wherein each adjustment structure has an adjustment frame extending from the side to the working surface; The complex height milling components are displaceably arranged on the adjustment frame of the complex adjustment structure so as to be respectively located on the opposite sides of the positioning structure, and are used for processing the height of the target and processing the end face of the base of the target. The plurality of driving groups are erected on the support structure by the plurality of bearings, and the plurality of milling cutter tools and the plurality of driving groups are respectively arranged on opposite sides of the carrier frame, and the supporting structure is provided with an active rack; and The power group is disposed on the adjustment frame in a displaceable manner and is located on the side of the base platform, and has a transmission shaft above the working surface and a transmission gear arranged on the transmission shaft. Drive the height-milling component up and down to the desired height position, and drive the height-milling component to move toward or away from the positioning structure in a straight line to perform height-milling processing of the target object. The height milling device according to claim 1, wherein a stopper is arranged on the outer side of the positioning structure to block the side of the target. The height milling device as described in Claim 1, wherein the adjustment structure further includes a drive unit arranged on the adjustment frame to push and pull the displacement of the power unit, so that the active threaded portion of the transmission shaft engages the active rack, or the transmission gear engages the transmission rack. The height milling device as described in Claim 1, wherein the power group is set on the adjustment frame through a fixed seat, and a track is provided on the adjustment frame, and the fixed seat has a groove engaging the track, so that the fixed seat can be displaced along the track. The height milling device as described in Claim 1 further includes a plurality of sliders arranged at the bottom of the support structure, and a plurality of slide rails arranged on the adjustment frame and correspondingly engaged with the sliders, so that the sliders move linearly along the slide rails, so that the power group simultaneously drives the support structure and the two bearing frames on it, and the drive group fixed on the carrier frame and the milling cutter tool are displaced a certain distance relative to the base. The height milling device as claimed in claim 1 further includes fixing parts correspondingly arranged on opposite sides of the positioning structure, so as to press the target object on the positioning structure. The height milling device as described in Claim 1 further includes a guide structure, which includes a slide rail and a slide seat joined to the slide rail, the slide rail is fixed on the side of the base, and the slide seat is fixed on the adjustment frame, so that the adjustment frame is arranged on the base via the guide structure, so that when the adjustment frame is raised and lowered, the support structure and the milling cutter tool on it can be driven up and down relative to the base. The height milling device as described in claim 1, wherein a limit baffle is provided on the support structure, and a stopper against the limit baffle is provided on the base, so that the position of the limit baffle is controlled by the stopper to control the displacement distance of the support structure. The height milling device as described in claim 1, wherein the height milling device is provided with two independent support structures and four independent load frames, and one independent support structure and two independent load frames are used as a unit to set up two sets of units, so that the two sets are respectively arranged in parallel on opposite sides of the positioning structure, and the two independent load frames in a single unit are respectively fixed on opposite sides of an independent support structure, so that each milling cutter tool on the load frame is driven by the same power group at the same time. The height milling device as described in Claim 1, wherein, the carrier is an L-shaped frame, which is symmetrically arranged on the left and right sides of the support structure, and the carrier is equipped with a driving group and the milling cutter tool on its opposite two ends, and the carrier is arranged on the end side facing the positioning structure. The milling tool is used to actuate the milling tool through the driving group. The height milling device as described in Claim 1, wherein, the support structure is an inverted T-shaped base, and the plurality of bearing frames are L-shaped frames, which are symmetrically arranged on the left and right sides of the upright part of the support structure, and the plurality of drive groups and the plurality of milling cutter tools are respectively arranged on the opposite ends of the plurality of bearing frames.