Gantry machine tool chip removal lathe bed and gantry machine tool

Abstract

The invention relates to the field of machine tools, and discloses a gantry machine tool which comprises a chip removal machine tool body, a workbench and a chip removal mechanism, the chip removal machine tool body comprises a chip removal channel located below the workbench, an inner guide table arranged on the outer surface of the workbench and an outer guide table located on the periphery of the workbench in a surrounding mode, and the four side faces of the inner guide table are obliquely arranged; four inner walls of the inner guide table are obliquely arranged, the distance between the inner guide table and the vertical center line of the workbench is gradually decreased from bottom to top, four inner walls of the outer guide table are obliquely arranged, and the distance between the outer guide table and the vertical center line of the workbench is gradually increased from bottom to top; the chip removal channel is annular, the upper end of the chip removal channel is open, and the chip removal channel is located under the chip falling area; according to the scheme, the novel chip removal lathe bed structure is adopted, chips generated in the machining process of the gantry machine tool can be effectively collected and discharged, waste chips can be received to the maximum extent, and the chip removal difficulty is reduced.

Description

Technical Field

[0001] The invention relates to the field of machine tools, in particular to the field of machine tool chip removal, and in particular to a gantry machine tool chip removal bed and a gantry machine tool. Background Art

[0002] A gantry machine tool is a machine tool with a gantry frame and a horizontal long bed, such as a gantry milling machine. When it is in use, it will inevitably produce waste chips, so chip removal operations are required. Existing chip removal technologies include chain plate chip conveyors, scraper type chip conveyors, spiral chip conveyors, etc., which generally receive waste chips through a conveying channel and push the waste chips out through chains, scrapers, augers, etc. to achieve the purpose of chip removal. There are some shortcomings. For example, the worktable of the machine tool is generally rectangular in shape. When receiving waste chips, it is generally through the cooperation of a fan and a blowing duct or manual sweeping with a broom to pull the waste chips to one side of the conveying channel and make them fall into the conveying channel. Regardless of the method, it is easy for some waste chips to fall to the outside of the conveying channel; after the waste chips fall into the conveying channel, the layout of their landing point and extension direction is unpredictable. In addition, metal waste chips are thin, curved, and have sharp ends, and have strong hooking and grabbing capabilities. Therefore, in the process of pushing waste chips, such as Fig.14 As shown in the upper figure, in the prior art, a represents the conveying channel, b represents waste chips, c represents the chain plate or scraper, d represents the movement direction of c, and there is a strong hooking force between the left end of b and the hole wall of a. In this case, although c can push b away, there is a lot of noise and there is a lot of resistance when pushing, which will cause c and a to wear.

[0003] Based on the above, the present invention proposes a chip removal bed of a gantry machine tool and a gantry machine tool. Summary of the invention

[0004] In order to solve the problems mentioned in the above background, the present invention provides a chip removal bed of a gantry machine tool and a gantry machine tool.

[0005] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows.

[0006] A gantry machine tool comprises a chip removal bed, a worktable and a chip removal mechanism, the chip removal bed comprises a chip removal channel located below the worktable, an inner guide table arranged on the outer surface of the worktable and an outer guide table surrounding the outer periphery of the worktable, the inner guide table and the outer guide table are both annular in shape and rectangular in cross-section, the four side surfaces of the inner guide table are all inclined, the distance between the side surface of the inner guide table and the vertical center line of the worktable decreases from bottom to top, the four inner walls of the outer guide table are all inclined, the distance between the inner wall of the outer guide table and the vertical center line of the worktable increases from bottom to top, the area between the inner guide table and the outer guide table is named a chip falling area, the chip removal channel is annular in shape and has an open upper end and is located directly below the chip falling area, an output port is provided at the bottom of the chip removal channel, and an output pipe is provided at the lower opening of the output port; The chip removal mechanism includes a chip removal component and an output component. The chip removal component includes a chip removal component and a moving component. The chip removal component is located in the chip removal channel. The feed end of the output component is located directly below the output pipe. The moving component is used to drive the chip removal component to move in the chip removal channel. The moving chip removal component pushes the waste chips together. When passing through the output port, the waste chips fall downward to the feed end of the output component.

[0007] As a further improvement and optimization of the present invention, the moving assembly includes a ring rail surrounding the outside of the chip removal channel and a moving bracket installed on the ring rail through a connecting component, and the chip removal assembly is connected to the moving bracket.

[0008] As a further improvement and optimization of the present invention, the connecting component includes two groups of connecting parts, the connecting parts include rollers with vertical axis lines, two rollers are provided and the two rollers are respectively located on the inner and outer sides of the ring rail, and the ring rail is clamped by the two rollers, and the line connecting the centers of gravity of the two rollers is named straight line one. When the movable bracket is located in the arc section of the ring rail, the straight lines one of the two connecting parts have an intersection point and the intersection point is located on the axis line of the arc section.

[0009] As a further improvement and optimization of the present invention, the moving component also includes a ring-shaped rack, and a motor and a gear meshing with the rack are installed on the moving bracket, and the gear and the motor form a power connection.

[0010] As a further improvement and optimization of the present invention, the vertical center line of the rack, the vertical center line of the ring rail and the vertical center line of the chip removal channel coincide with each other, and the shapes of the rack, the chip removal channel and the ring rail are consistent and their sizes are proportionally scaled.

[0011] As a further improvement and optimization of the present invention, the mobile component also includes a conductive rail in a ring shape, the vertical center line of the conductive rail coincides with the vertical center line of the ring rail, the conductive rail and the ring rail are consistent in shape and their sizes are proportionally scaled, and a pantograph that is in conductive contact with the conductive rail is provided on the mobile bracket, and the pantograph is conductively connected to the motor.

[0012] As a further improvement and optimization of the present invention, the chip removal assembly includes a slide seat slidably installed on a movable bracket along a vertical direction, a first spring is arranged between the slide seat and the movable bracket and the first spring is located above the slide seat, a connecting bracket is slidably installed on the slide seat along the width direction of the chip removal channel, and a chip removal plate located in the chip removal channel is arranged at the bottom of the connecting bracket.

[0013] As a further improvement and optimization of the present invention, the chip removal plate includes a side plate and two sealing plates. The side plate is slidably installed on the connecting bracket along the width direction of the chip removal channel. Two side plates are arranged along their own sliding direction. A second spring is arranged between the two side plates. The two sealing plates are respectively located on both sides of the side plate along the width direction of the chip removal channel, and the sealing plate is in contact with the two side plates at the same time.

[0014] As a further improvement and optimization of the present invention, the bottom of the side plate is fitted with the bottom of the chip removal channel. Driven by the elastic force of the second spring, the opposite sides of the two side plates are respectively fitted with the two inner walls of the chip removal channel along the width direction, and the bottom of the sealing plate is fitted with the bottom of the chip removal channel.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In this scheme, when removing chips, the motor drives the movable bracket to move on the ring rail, and the movable bracket moves with the chip removal assembly, so that the chip removal plate moves in the chip removal channel. During the movement, the waste chips will be pushed to move together. When passing through the output port, the waste chips fall onto the output assembly. In addition, during the chip removal process: a. The advantages of a chip removal channel in a closed loop are: on the one hand, we only need to consider how to blow the waste chips on the workbench into the chip removal channel, without considering the direction of the waste chips moving, because no matter which direction they move, they will eventually fall into the chip removal channel; on the other hand, the waste chips splashed in all directions during processing can also be blocked and fall into the chip removal channel. Therefore, the chip removal channel in a closed loop can maximize the reception of waste chips and reduce the difficulty of chip removal; b. The chip removal plate composed of two side plates and two sealing plates can adapt to the chip removal channel in the shape of a closed loop and push the waste chips out through the output port; c. Since the side panels can slide, if Fig.14 As shown in the above figure, in this scheme, a represents the chip removal channel, b represents the waste chips, c represents the chip removal plate, and d represents the moving direction of the chip removal plate. Since the angle between the waste chips and the hole wall of the chip removal channel is small and one end of the waste chips is stubbornly hooked on the hole wall of the chip removal channel, it is difficult for the chip removal plate to move and push away the waste chips. If it is pushed hard, harsh noise will occur and the chip removal plate and the chip removal channel will be worn. In contrast, in this scheme, since the side plate can slide, the waste chips can cause the side plate to retreat, so that the chip removal plate passes over the waste chips. Furthermore, when the present solution is used, the movement direction of the moving component can be changed regularly, that is, the movement direction of the chip removal plate in the chip removal channel is adjusted regularly. Fig.14 As shown in the following figure, a represents the chip removal channel, b represents the waste chips (i.e. the waste chips that were previously passed by the chip removal plate), c represents the chip removal plate, and e represents the moving direction of the chip removal plate. At this time, the chip removal plate can easily push away the waste chips; In summary, this use method of the present solution can greatly reduce the difficulty of pushing away waste chips, reduce noise, and reduce wear on the chip removal plate and the chip removal channel.

[0016] 2. The chip removal bed and gantry machine tool described in this scheme can effectively collect and discharge the chips generated by the gantry machine tool during the processing by adopting a new chip removal bed structure, thereby avoiding the chips from damaging the machine tool components and affecting the processing quality, thereby improving the processing efficiency and safety of the machine tool; at the same time, the gantry machine tool of the present invention has a compact structure and strong stability, can adapt to the chip discharge needs of different processing stages, reduce the chip processing cost, and improve the economy of long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 For the prior art Figure 1 ; Figure 2 For the prior art Figure 2 ; Figure 3 It is a structural schematic diagram of the present invention; Figure 4 A schematic diagram of a workbench, a chip removal component, and an output component; Figure 5 Schematic diagram of the workbench and chip removal components Figure 1 ; Figure 6 Schematic diagram of the workbench and chip removal components Figure 2 ; Figure 7 is a schematic diagram of a chip removal channel and a chip removal component; Figure 8 is a partial schematic diagram of a chip removal component; Fig. 9 is a schematic diagram of a mobile component; Fig.10 is a schematic diagram of the connecting parts; Fig.11 A schematic diagram of connecting the support and the chip removal assembly; Fig.12 An exploded view of the chip removal assembly; Fig.13 is a schematic diagram of the output component; Fig.14This is a schematic diagram of the chip removal channel and waste chips during the movement of the chip removal plate.

[0018] The reference numerals in the accompanying drawings are: 100, workbench; 101, chip removal channel; 102, inner guide platform; 103, outer guide platform; 104, output pipeline; 200, chip removal component; 201, ring rail; 202, moving component; 2021, moving bracket; 2022, motor; 2023, gear; 2024, rack; 2025, roller; 203, chip removal component; 2031, slide seat; 2032, first spring; 2033, connecting bracket; 2034, side plate; 2035, second spring; 2036, closing plate; 204, conductive rail; 205, pantograph; 300, output assembly; 301, lower conveying bracket; 302, lower conveyor belt; 303, boss; 304, upper conveying bracket; 305, upper conveyor belt; 306, counterweight; 307, upper guide plate; 308, lower guide plate; 400, chip storage box. DETAILED DESCRIPTION

[0019] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0020] A gantry machine tool comprises a chip removal bed, a worktable 100 and a chip removal mechanism.

[0021] A chip removal bed of a gantry machine tool comprises a chip removal channel 101 located below a worktable 100, an inner guide table 102 arranged on the outer surface of the worktable 100, and an outer guide table 103 surrounding the periphery of the worktable 100, wherein: the worktable 100 is generally rectangular in shape, therefore, the inner guide table 102 and the outer guide table 103 are both annular in shape and have a rectangular cross-sectional shape, the four side surfaces of the inner guide table 102 are all inclinedly arranged, the distance between the side surfaces of the inner guide table 102 and the vertical center line of the worktable 100 decreases from bottom to top, the worktable 100 is rectangular, and therefore has three center lines, the vertical center line refers to the center line arranged vertically, the four inner walls of the outer guide table 103 are all inclinedly arranged, the distance between the inner wall of the outer guide table 103 and the vertical center line of the worktable 100 increases from bottom to top, and the area between the inner guide table 102 and the outer guide table 103 is named a chip removal area The chip removal channel 101 is annular in shape, with an open upper end and located directly below the chip falling area, and a closed lower end. In this way, during the workpiece processing, the waste chips generated will either remain on the workbench 100 and be pulled by the existing technology to fall into the chip removal channel 101 through the chip falling area, such as the cooperation of the fan and the blowing duct or manual cleaning, or they will splash and be blocked by the external guide table 103 and fall into the chip removal channel 101. The advantage of this is that, on the one hand, it is only necessary to consider how to blow the waste chips on the workbench 100 into the chip removal channel 101, without considering the direction of the movement of the waste chips, because no matter which direction they move, they will eventually fall into the chip removal channel 101. On the other hand, the waste chips splashed around during processing can also be blocked and fall into the chip removal channel 101. Therefore, through the chip removal channel 101 in a closed annular loop, the waste chips can be received to the maximum extent and the difficulty of chip removal can be reduced.

[0022] Reference Figure 3-Figure 14 An output port is provided at the bottom of the chip removal channel 101 , and an output pipe 104 is provided at the lower opening of the output port.

[0023] The chip removal mechanism includes a chip removal component 200 and an output component 300. The chip removal component 200 includes a chip removal component 203 and a moving component 202. The chip removal component 203 is located in the chip removal channel 101. The feed end of the output component 300 is located directly below the output pipe 104. The moving component 202 is used to drive the chip removal component 203 to move in the chip removal channel 101. The moving chip removal component 203 pushes the waste chips to move together. When passing through the output port, the waste chips fall downward to the feed end of the output component 300, and are pulled away by the output component 300. Furthermore, a chip storage box 400 is provided below the discharge end of the output component 300 to store waste chips.

[0024] Mobile Component 202: Reference Figure 7-10The moving component 202 includes a ring rail 201 surrounding the outside of the chip removal channel 101. The vertical center line of the ring rail 201 coincides with the vertical center line of the chip removal channel 101. The vertical center line refers to the center line of the vertically arranged ring rail 201 or the chip removal channel 101. The vertical center line mentioned below refers to the center line of the vertically arranged parts, which will not be repeated.

[0025] The moving assembly 202 also includes a moving bracket 2021 installed on the ring rail 201 through a connecting component. Furthermore, the connecting component includes two groups of connecting parts, and the connecting part includes a roller 2025 with a vertical axis. Two rollers 2025 are provided and the two rollers 2025 are respectively located on the inner and outer sides of the ring rail 201, and the ring rail 201 is clamped by the two rollers 2025. The line connecting the centers of gravity of the two rollers 2025 is named straight line one. When the moving bracket 2021 is located in the arc segment of the ring rail 201, the straight lines 1 of the two connecting parts have an intersection and the intersection is located on the axis of the arc segment. In this way, the moving bracket 2021 can be slidably installed on the ring rail 201 through the connecting component, and the moving bracket 2021 can move smoothly and smoothly on the ring rail 201.

[0026] The moving assembly 202 further includes a ring-shaped rack 2024 , the vertical center line of the rack 2024 coincides with the vertical center line of the ring rail 201 , and the rack 2024 , the chip removal channel 101 and the ring rail 201 are consistent in shape and proportional in size.

[0027] A motor 2022 and a gear 2023 meshing with a rack 2024 are installed on the mobile bracket 2021. The gear 2023 and the motor 2022 form a power connection. Therefore, when the gear 2023 is driven to rotate by the motor 2022, the gear 2023 rotates while moving along the extension direction of the rack 2024, thereby moving with the mobile bracket 2021.

[0028] Chip removal assembly 203: refer to Figure 7 , Fig.11 and Fig.12 The chip removal assembly 203 includes a slide seat 2031 slidably mounted on the movable bracket 2021 along a vertical direction, a first spring 2032 is arranged between the slide seat 2031 and the movable bracket 2021 and the first spring 2032 is located above the slide seat 2031 .

[0029] A connecting bracket 2033 is slidably installed on the slide 2031 along the width direction of the chip removal channel 101, and a side plate 2034 is slidably installed on the bottom of the connecting bracket 2033 along the width direction of the chip removal channel 101. Two side plates 2034 are arranged along their own sliding direction, and a second spring 2035 is arranged between the two side plates 2034. The side plate 2034 is located in the chip removal channel 101, and the bottom of the side plate 2034 is in contact with the bottom of the chip removal channel 101. Driven by the elastic force of the second spring 2035, the opposite sides of the two side plates 2034 are respectively in contact with the two inner walls of the chip removal channel 101 along the width direction.

[0030] Two sealing plates 2036 are also provided at the bottom of the connecting bracket 2033, and the sealing plates 2036 are also located in the chip removal channel 101. The bottom of the sealing plates 2036 is in contact with the bottom of the chip removal channel 101. The two sealing plates 2036 are respectively located on both sides of the side plates 2034 along the width direction of the chip removal channel 101, and the sealing plates 2036 are in contact with the two side plates 2034 at the same time. In this way, the two side plates 2034 and the two sealing plates 2036 together form a chip removal plate. The chip removal plate can move in the chip removal channel 101, and during the movement, the bottom of the chip removal plate remains in contact with the bottom of the chip removal channel 101, and the two side surfaces of the chip removal plate remain in contact with the two inner walls of the chip removal channel 101 along the width direction.

[0031] The working process of the chip removal component 200 is specifically as follows: The motor 2022 drives the movable bracket 2021 to move on the ring rail 201, and the movable bracket 2021 moves with the chip removal assembly 203, so that the chip removal plate moves in the chip removal channel 101. During the movement, the waste chips are pushed to move together. When passing through the output port, the waste chips fall onto the output assembly 300. In addition, during the chip removal process: a. The advantages of the chip removal channel 101 in a closed loop are: on the one hand, it is only necessary to consider how to blow the waste chips on the workbench 100 into the chip removal channel 101, and there is no need to consider the direction of the waste chips moving, because no matter which direction they move, they will eventually fall into the chip removal channel 101; on the other hand, the waste chips splashed in the surroundings during processing can also be blocked and fall into the chip removal channel 101. Therefore, the chip removal channel 101 in a closed loop can maximize the reception of waste chips and reduce the difficulty of chip removal; b. The chip removal plate composed of two side plates 2034 and two sealing plates 2036 can adapt to the chip removal channel 101 in the shape of a closed loop and push the waste chips out through the output port; c. Since the side plate 2034 can slide, if Fig.14As shown in the above figure, in this solution, a represents the chip removal channel 101, b represents the waste chips, c represents the chip removal plate, and d represents the moving direction of the chip removal plate. Since the angle between the waste chips and the hole wall of the chip removal channel 101 is small and one end of the waste chips is stubbornly hooked on the hole wall of the chip removal channel 101, it is difficult for the chip removal plate to move and push away the waste chips. If it is pushed hard, a harsh noise will occur and the chip removal plate and the chip removal channel 101 will be worn. In contrast, in this solution, since the side plate 2034 can slide, the waste chips can cause the side plate 2034 to retreat, so that the chip removal plate passes over the waste chips. Furthermore, when the present solution is used, the movement direction of the moving assembly 202 can be changed regularly, that is, the movement direction of the chip removal plate in the chip removal channel 101 is adjusted regularly. Fig.14 As shown in the next figure, a represents the chip removal channel 101, b represents the waste chips (i.e., the waste chips previously passed by the chip removal plate), c represents the chip removal plate, and e represents the moving direction of the chip removal plate. At this time, the chip removal plate can easily push away the waste chips; In summary, this use method of the present solution can greatly reduce the difficulty of pushing away waste chips, reduce noise, and reduce wear on the chip removal plate and the chip removal channel 101.

[0032] Further, see Figure 7 and Fig. 9 Since the motor 2022 needs to move with the mobile bracket 2021, a conductive rail 204 can be set. The vertical center line of the conductive rail 204 coincides with the vertical center line of the ring rail 201, and the two have the same shape and proportional sizes. Then, a pantograph 205 that is in conductive contact with the conductive rail 204 is set on the mobile bracket 2021 to supply power to the motor 2022. The conductive connection between the pantograph 205 and the motor 2022 can be achieved by existing technology and will not be elaborated on.

[0033] Output component 300: Reference Figure 4 and Fig.13 The output assembly 300 includes a lower conveying support 301 and a lower conveying belt 302 installed on the lower conveying support 301 .

[0034] A protrusion 303 extends from the upper end of the lower conveying bracket 301, and an upper conveying bracket 304 is slidably mounted on the protrusion 303. An upper conveying belt 305 is mounted on the upper conveying bracket 304. A counterweight block 306 is also provided on the upper conveying bracket 304. Under the action of the gravity of the counterweight block 306, the upper conveying bracket 304 has a tendency to move closer to the lower conveying bracket 301, so that the upper conveying belt 305 has a tendency to move closer to the lower conveying belt 302. Initially, the gap between the two is small.

[0035] In addition, the upper conveyor belt 305 and the lower conveyor belt 302 both include an inclined section and a horizontal section. The inclined section plays a lifting role. The upper conveyor belt 305 and the lower conveyor belt 302 can be realized by using existing conveyor belt technology. The setting of the inclined section and the horizontal section is achieved by adding a pressure pulley at the turning point, which will not be elaborated.

[0036] The feed end of the lower conveyor belt 302 is located below the output pipe 104 .

[0037] The waste chips fall onto the lower conveyor belt 302 , and the lower conveyor belt 302 and the upper conveyor belt 305 run synchronously, so the waste chips can be finally clamped and lifted by both, and leave at the discharge ends of both, and fall into the chip storage box 400 .

[0038] In a preferred embodiment, a lower guide plate 308 is provided on the lower conveying bracket 301, and an upper guide plate 307 is provided on the upper conveying bracket 304. The lower guide plate 308 and the upper guide plate 307 are provided to play a guiding role to prevent waste chips from remaining on the lower conveyor belt 302 or the upper conveyor belt 305.

[0039] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A gantry machine tool, comprising a chip removal bed and a worktable (100) and a chip removal mechanism, characterized in that: The chip removal bed comprises a chip removal channel (101) located below the workbench (100), an inner guide table (102) arranged on the outer surface of the workbench (100), and an outer guide table (103) surrounding the periphery of the workbench (100), the inner guide table (102) and the outer guide table (103) both being annular in shape and having a rectangular cross-sectional shape, the four side surfaces of the inner guide table (102) being arranged in an inclined manner, and the distance between the side surface of the inner guide table (102) and the vertical center line of the workbench (100) being The four inner walls of the outer guide platform (103) are arranged in an inclined manner from bottom to top, and the distance between the inner wall of the outer guide platform (103) and the vertical center line of the workbench (100) increases from bottom to top. The area between the inner guide platform (102) and the outer guide platform (103) is named as the chip falling area. The chip removal channel (101) is annular in shape and has an open upper end and is located directly below the chip falling area. An output port is provided at the bottom of the chip removal channel (101), and an output pipe (104) is provided at the lower opening of the output port. The chip removal mechanism comprises a chip removal component (200) and an output component (300), wherein the chip removal component (200) comprises a chip removal component (203) and a moving component (202), wherein the chip removal component (203) is located in a chip removal channel (101), and a feed end of the output component (300) is located directly below the output pipe (104), and the moving component (202) is used to drive the chip removal component (203) to move in the chip removal channel (101), wherein the moving chip removal component (203) pushes the waste chips to move together, and when passing through the output port, the waste chips fall downward to the feed end of the output component (300).

2. A gantry machine tool according to claim 1, characterized in that: The moving assembly (202) comprises a ring rail (201) surrounding the outside of the chip removal channel (101) and a moving bracket (2021) mounted on the ring rail (201) via a connecting component, and the chip removal assembly (203) is connected to the moving bracket (2021).

3. A gantry machine tool according to claim 2, characterized in that: The connecting component comprises two groups of connecting members, wherein the connecting member comprises a roller (2025) with a vertical axis, two rollers (2025) are provided and the two rollers (2025) are respectively located on the inner and outer sides of the circular rail (201), and the circular rail (201) is clamped by the two rollers (2025), and the center of gravity of the two rollers (2025) is named straight line one, and when the movable bracket (221) is located in the arc section of the circular rail (201), the straight lines of the two connecting members have an intersection point and the intersection point is located on the axis line of the arc section.

4. A gantry machine tool according to claim 2, characterized in that: The moving assembly (202) further comprises a ring-shaped rack (2024); a motor (2022) and a gear (2023) meshing with the rack (2024) are mounted on the moving bracket (2021); the gear (2023) and the motor (2022) are connected in a power connection.

5. A gantry machine tool according to claim 4, characterized in that: The vertical center line of the rack (2024), the vertical center line of the ring rail (201), and the vertical center line of the chip removal channel (101) coincide with each other; the rack (2024), the chip removal channel (101), and the ring rail (201) are of the same shape and have dimensions that are proportionally scaled.

6. A gantry machine tool according to claim 5, characterized in that: The mobile component (202) further comprises a conductive rail (204) in a ring shape, the vertical center line of the conductive rail (204) coincides with the vertical center line of the ring rail (201), the conductive rail (204) and the ring rail (201) are consistent in shape and proportional in size, and a pantograph (205) in conductive contact with the conductive rail (204) is provided on the mobile bracket (2021), and the pantograph (205) is conductively connected to the motor (222).

7. A gantry machine tool according to claim 5, characterized in that: The chip removal assembly (203) comprises a slide seat (2031) slidably mounted on a movable bracket (2021) in a vertical direction, a first spring (2032) being arranged between the slide seat (2031) and the movable bracket (2021), and the first spring (2032) being located above the slide seat (2031), a connecting bracket (2033) being slidably mounted on the slide seat (2031) in a width direction of the chip removal channel (101), and a chip removal plate located in the chip removal channel (101) being arranged at the bottom of the connecting bracket (2033).

8. A gantry machine tool according to claim 7, characterized in that: The chip removal plate comprises a side plate (2034) and two sealing plates (2036); the side plate (2034) is slidably mounted on a connecting bracket (2033) along the width direction of the chip removal channel (101); two side plates (2034) are arranged along their own sliding direction; a second spring (2035) is arranged between the two side plates (2034); the two sealing plates (2036) are respectively located on both sides of the side plate (2034) along the width direction of the chip removal channel (101), and the sealing plates (2036) are simultaneously fitted with the two side plates (2034).

9. A gantry machine tool according to claim 8, characterized in that: The bottom of the side plate (2034) fits with the cavity bottom of the chip removal channel (101), and driven by the elastic force of the second spring (2035), the opposite sides of the two side plates (2034) fit with the two inner walls of the chip removal channel (101) along the width direction respectively, and the bottom of the sealing plate (2036) fits with the cavity bottom of the chip removal channel (101).

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