Revolving door device of machine tool exchange workbench

By introducing a sliding and rotating beam door design into the rotating door device of the exchange workbench, combined with rubber and brushes, the problem of poor isolation effect of traditional rotating door devices is solved, achieving effective isolation of waste chips and waste liquid and noise control, and simplifying the brush replacement process.

CN121973018APending Publication Date: 2026-05-05宁夏福思泰智能装备有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
宁夏福思泰智能装备有限公司
Filing Date
2025-12-31
Publication Date
2026-05-05

AI Technical Summary

Technical Problem

The rotating door of the exchange table in traditional horizontal machining centers has a margin of error, which allows cutting fluid or debris to enter, affecting the isolation effect.

Method used

A rotating door device for machine tool exchange worktable was designed. The device slides on the top beam and rotates on the exchange door via a crossbeam door. Combining rubber, brushes and sound-insulating composite materials, it effectively isolates waste chips and waste liquid, and supports rotation and lifting functions.

Benefits of technology

It effectively solves the problem of poor isolation effect of traditional revolving door devices, realizes the isolation of waste chips and waste liquid, reduces noise transmission, and simplifies the disassembly and assembly process of brushes.

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Abstract

The invention discloses a revolving door device of a machine tool exchange workbench, and relates to the technical field of machine tool revolving doors, the revolving door device comprises a top cross beam and an exchange workbench main body, one end of the top cross beam is fixedly provided with a left rack, the other end of the top cross beam is fixedly provided with a right rack, and the top of the exchange workbench main body is provided with an exchange door; the cross beam door slides on the top cross beam, the bottom of the cross beam door rotates on the exchange door, through the design, when the exchange workbench body acts to enable the exchange door to ascend, the cross beam door synchronously ascends along with the exchange door, rubber sheets are fixed on the cross beam door through a pressing plate, waste chips and waste liquid can be effectively isolated, and the service life of the exchange workbench body is prolonged. Meanwhile, the cross beam door rolls above the exchange door through a bearing, the rotation requirement of the exchange door is met, sweeps and waste liquid can be conveniently isolated through brushes on the two sides of the exchange door, and the problem that the isolation effect is poor due to the fact that a gap in the top of the exchange door of a traditional exchange workbench body is large can be effectively solved through the design.
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Description

Technical Field

[0001] This invention relates to the field of machine tool rotating door technology, specifically to a rotating door device for machine tool exchange worktables. Background Technology

[0002] Horizontal machining centers are one of the most commonly used CNC machine tools. Due to their structural characteristics, workpieces can be processed in multiple steps in a single clamping, making them a highly efficient automated production equipment. The exchange table of a horizontal machining center allows one workpiece to be processed while another workpiece is being prepared for unloading and clamping, reducing preparation time, enabling batch processing of parts, and improving productivity. The exchange table of a horizontal machining center is generally equipped with a corresponding rotating door device to separate the processing area and the loading area.

[0003] Currently, while the traditional rotating door of the exchange table in a horizontal machining center can basically meet the isolation requirements, it still has some shortcomings in practical applications. Because the traditional rotating door needs to meet the rotation and lifting requirements of the exchange table, a certain amount of error space is left above the rotating door. This gap can easily allow cutting fluid or waste chips to enter, affecting the isolation effect. Therefore, we propose a rotating door device for machine tool exchange tables. Summary of the Invention

[0004] The purpose of this invention is to provide a rotating door device for machine tool exchange worktables to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a rotating door device for a machine tool exchange table, comprising a top crossbeam and an exchange table body. A left machine frame is fixedly installed at one end of the top crossbeam, and a right machine frame is fixedly installed at the other end of the top crossbeam. An exchange door is provided on the top of the exchange table body. A baffle plate is fixedly installed on the outer side of the exchange door. The top of the exchange door is rotatably connected to the inner side of the top crossbeam. A crossbeam door is slidably connected to one side of the top crossbeam via a slider. The bottom of the crossbeam door is movably connected to the top of the exchange door via a bearing. A rubber sheet is fixedly installed on one side of the bottom of the crossbeam door via a pressure plate. Brushes are fixedly installed on both sides of the exchange door via connectors. The exchange door is movably connected via limiting members and connectors.

[0006] Preferably, a positioning shaft is fixedly installed on the top of the exchange door, and a positioning hole is opened on the inner side of the top crossbeam, with the positioning shaft rotatably connected to the inner side of the top hole.

[0007] Preferably, grooves are symmetrically formed between the opposite surfaces of the crossbeam door and the top crossbeam, the slider is fixedly installed inside the groove of the top crossbeam, and a linear rail is fixedly installed in the groove of the crossbeam door, with the slider and the linear rail being slidably connected.

[0008] Preferably, the bottom of the crossbeam door is symmetrically fixedly equipped with supports, the bearing is located inside the supports, the top of the exchange door is fixedly equipped with a skirt plate, and the lower half of the exchange door frame is provided with an inclined surface.

[0009] Preferably, the connector includes a connecting plate, the brush is fixedly installed on one side of the connecting plate, a connecting groove is provided on the other side of the connecting plate, a connecting hole is provided on the inner side of the connecting groove, a connecting column is fixedly installed on the outer side of the exchange door, a slot is provided on the outer side of the connecting column, the connecting plate and the slot are movably connected, a hanging block is fixedly installed on the inner side of the connecting hole in the middle of the connecting plate, and the exchange door is movably connected to the hanging block through a limiting member.

[0010] Preferably, the limiting component includes a mounting shell, one end of which is fixedly mounted with a rotating base. The other end of the mounting shell is rotatably connected to one side of the exchange door via the rotating base. A movable block is slidably connected to the inner side of the mounting shell. A tension spring is fixedly mounted between the movable block and the inner wall of the mounting shell. A pull rod is fixedly mounted on the side of the movable block away from the tension spring. A hook is slidably mounted on the end of the pull rod away from the movable block, passing through the inner wall of the mounting shell. The hook and the hanging block are movably connected.

[0011] Preferably, a shaft is fixedly installed on one side of the exchange door, a retaining ring is fixedly installed on the outer side of the shaft, the rotating seat is rotatably connected to the outer side of the shaft, the inner side of the mounting shell is symmetrically provided with sliding grooves, the end of the movable block is slidably connected to the inner side of the sliding groove, the end of the mounting shell away from the rotating seat is provided with a sliding hole, the end of the pull rod away from the movable block slides through the sliding hole, and an operating handle is fixedly installed on one side of the hook.

[0012] Preferably, the exchange door is composed of a galvanized steel sheet layer, a polyester fiber cotton layer, and a damping pad layer. The polyester fiber cotton layer is disposed between the damping pad layer and the galvanized steel sheet layer, and the side of the galvanized steel sheet layer away from the polyester fiber cotton layer is provided with an anti-corrosion coating.

[0013] Compared with the prior art, the beneficial effects of the present invention are: This invention features a horizontal beam door that slides on a top beam and rotates on a bottom exchange door. This design allows the horizontal beam door to rise synchronously with the main body of the exchange workbench as the exchange door rises. The horizontal beam door is secured with pressure plates and rubber sheets to effectively isolate waste debris and waste liquid. Simultaneously, the horizontal beam door rolls above the exchange door via bearings to meet the rotation requirements of the exchange door. Brushes on both sides of the exchange door facilitate the isolation of waste debris and waste liquid. This design effectively solves the problem of poor isolation caused by the large gap at the top of the exchange door in traditional exchange workbench systems.

[0014] This invention effectively blocks the noise propagation path by using a sound-insulating composite material for the exchange door. At the same time, the brush is connected to the exchange door through a connector, and with the help of a limiting component, the brush part can be quickly disassembled and replaced. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the interchangeable gate of the present invention; Figure 3 This is a top view of the top crossbeam of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram showing the connection between the brush and the exchange door of the present invention; Figure 6 For the present invention Figure 5 Enlarged view at point B in the middle; Figure 7 For the present invention Figure 5 Enlarged view at point C; Figure 8 This is a schematic diagram of the limiting component structure of the present invention; Figure 9 This is a cross-sectional view of the interchangeable gate for the present invention.

[0016] In the diagram: 1. Left frame; 201. Exchange door; 202. Water baffle; 203. Brush; 204. Main body of the exchange workbench; 301. Top beam; 302. Beam door; 303. Bearing; 304. Rubber; 305. Pressure plate; 306. Slider; 307. Linear rail; 401. Right frame; 5. Positioning hole; 6. Positioning shaft; 7. Groove; 8. Limiting component; 801. Mounting shell; 802. Movable block; 803. Tension spring; 804. Pull rod; 8 05. Hook; 806. Rotary seat; 9. Inclined surface; 10. Connector; 101. Connecting plate; 102. Connecting groove; 103. Connecting hole; 104. Groove; 105. Connecting column; 106. Hanging block; 11. Operating handle; 12. Sliding hole; 13. Sliding groove; 14. Shaft column; 15. Retaining ring; 16. Skirt plate; 17. Support; 2011. Galvanized steel plate layer; 2012. Polyester fiber cotton layer; 2013. Damping pad layer; 2014. Anti-corrosion coating. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1 Please see Figures 1-9This invention provides a technical solution: a rotating door device for a machine tool exchange table. This invention addresses the technical problems mentioned in the background art by making corresponding improvements. It includes a top beam 301 and an exchange table body 204. A left frame 1 is fixedly installed at one end of the top beam 301, and a right frame 401 is fixedly installed at the other end. An exchange door 201 is provided at the top of the exchange table body 204. A baffle 202 is fixedly installed on the outer side of the exchange door 201. The top of the exchange door 201 is rotatably connected to the inner side of the top beam 301, and one side of the top beam 301 is slidably connected via a slider 306. A crossbeam door 302 is provided, with its bottom movably connected to the top of the exchange door 201 via a bearing 303. A rubber sheet 304 is fixedly installed on one side of the bottom of the crossbeam door 302 via a pressure plate 305. Brushes 203 are fixedly installed on both sides of the exchange door 201 via connectors 10. The exchange door 201 is movably connected via a limiting member 8 and connectors 10. The left frame 1, the top crossbeam 301, and the right frame 401 are fixed in place. The brushes 203 on both sides of the exchange door 201 are used to isolate waste debris and waste liquid. The top of the exchange door 201 rotates on the top crossbeam 301 via a positioning shaft 6, which serves as a guide to ensure the exchange door... To ensure stability, the main body 204 of the exchange workbench can move up and down a certain distance. The exchange door 201 rises or falls with the main body 204. The top beam 301 slides relative to the slide rail of the beam door 302 via a slider 306. The rubber 304 fixed by the pressure plate 305 at the lower edge of one side of the beam door 302 can isolate and block waste liquid and waste debris. A positioning shaft 6 is fixedly installed on the top of the exchange door 201. A positioning hole 5 is opened on the inner side of the top beam 301. The positioning shaft 6 is rotatably connected to the inner side of the top hole. The positioning shaft 6 on the exchange door 201 can move within the positioning hole 5 of the top beam 301. The system enables rotation and sliding, satisfying the rotation and lifting needs of the exchange door 201 while ensuring the stability of the exchange door 201 as it moves with the main body 204 of the exchange workbench. Grooves 7 are symmetrically provided between the opposite surfaces of the crossbeam door 302 and the top crossbeam 301. A slider 306 is fixedly installed inside the groove 7 of the top crossbeam 301. A linear guide 307 is fixedly installed in the groove 7 of the crossbeam door 302. The slider 306 and the linear guide 307 are slidably connected. By sliding relative to each other, the slider 306 of the top crossbeam 301 and the linear guide 307 of the crossbeam door 302 can meet the need for the exchange door 201 to drive the crossbeam door 302 to rise and fall.A support 17 is symmetrically fixedly installed at the bottom of the crossbeam door 302, and a bearing 303 is located inside the support 17. A skirt plate 16 is fixedly installed at the top of the exchange door 201. An inclined surface 9 is provided at the lower half of the frame of the exchange door 201. The bearing 303 can be easily installed through the support 17 at the bottom of the crossbeam door 302, allowing the bottom of the crossbeam door 302 to roll at the top of the exchange door 201. Two bearings 303 are provided at the bottom of the crossbeam door 302 and are close to the positioning shaft 6, so that the bearings 303 always roll on the exchange door 201 during rotation, ensuring support for the crossbeam door 302. The skirt plate 16 on the exchange door 201 ensures that the contact surface between the bearing 303 and the top of the exchange door 201 is sufficient to ensure that the bearing 303 remains above the exchange door 201 during any 360-degree rotation. The inclined surface 9 on the exchange door 201 guides and discharges the waste debris and waste liquid from the baffle.

[0019] The specific implementation method of this embodiment is as follows: When the main body of the machine tool worktable is exchanged, the main body 204 of the exchange worktable is raised, and the exchange door 201 is also raised. The top of the exchange door 201 raises the crossbeam door 302 through the bearing 303. At the same time, the rubber 304, the rubber 304 pressure plate 305, and the bearing 303 are also raised. The crossbeam door 302 moves up and down through the slider 306 and the linear guide 307. When it is raised to the position, the main body 204 of the exchange worktable drives the exchange door 201 to rotate. Since the crossbeam door 302 is in contact with the plane at the top of the exchange door 201 through the bearing 303, the bearing 303 will rotate with the rotation of the exchange door 201, while the crossbeam door 302 will not rotate. After rotating 180 degrees to the position, the main body 204 of the exchange worktable is lowered, the exchange door 201 and the baffle 202 are lowered, and the crossbeam door 302 will also be lowered to the position. Then the machine tool will process the parts.

[0020] Example 2 Please see Figure 5-8This invention provides a technical solution: a rotating door device for a machine tool exchange worktable. This invention addresses the technical problems mentioned in the background art by making corresponding improvements. The connecting member 10 includes a connecting plate 101, a brush 203 fixedly installed on one side of the connecting plate 101, a connecting groove 102 opened on the other side of the connecting plate 101, a connecting hole 103 opened on the inner side of the connecting groove 102, a connecting post 105 fixedly installed on the outer side of the exchange door 201, a cutting groove 104 opened on the outer side of the connecting post 105, the connecting plate 101 and the cutting groove 104 are movably connected, and the connecting part in the middle of the connecting plate 101... A hanging block 106 is fixedly installed inside the connection hole 103. The exchange door 201 is movably connected to the hanging block 106 through the limiting member 8. The brush 203 is fixed on the connecting plate 101. After the connecting plate 101 is inserted into the connecting post 105 of the exchange door 201 through the connection hole 103, the connecting plate 101 is pushed horizontally on the side of the exchange door 201 through the connecting groove 102 until the connecting plate 101 is limited. At this time, the multiple connection holes 103 on the connecting plate 101 are inserted into the groove 104 of the connecting post 105, so that the connecting plate 101 part of the brush 203 can be quickly connected. The limiting component 8 includes a mounting shell 801. A rotating base 806 is fixedly mounted on one end of the mounting shell 801. One end of the mounting shell 801 is rotatably connected to one side of the exchange door 201 via the rotating base 806. A movable block 802 is slidably connected to the inner side of the mounting shell 801. A tension spring 803 is fixedly mounted between the movable block 802 and the inner wall of the mounting shell 801. A pull rod 804 is fixedly mounted on the side of the movable block 802 away from the tension spring 803. A hook 805 is fixedly mounted on the end of the pull rod 804 away from the movable block 802, which slides through the inner wall of the mounting shell 801. The hook 805 and the hanging block 106 are movably connected. After the multiple connecting holes 103 on the connecting plate 101 are inserted into the grooves 104 of the connecting post 105, the hook 805 is pulled to allow the hook 805 to pass through... The pull rod 804 drives the movable block 802 to slide inside the mounting shell 801, and the tension spring 803 between the movable block 802 and the mounting shell 801 is stretched. At this time, by rotating the mounting shell 801, the hook 805 is hooked onto the hanging block 106 of the connecting plate 101 to complete the installation. Conversely, when the brush 203 needs to be replaced, simply remove the hook 805 and push out the connecting plate 101 to complete the disassembly. The operation is simple and convenient. Currently, the connection parts of the brush 203 are basically fixed by a large number of screws. However, the machine tool cutting fluid is a chemical raw material with certain corrosiveness, which can easily cause the screws to rust and affect disassembly and replacement. Through the technical design of this solution, the difficulty of disassembling the brush 203 caused by this problem can be avoided. A shaft post 14 is fixedly installed on one side of the exchange door 201. A retaining ring 15 is fixedly installed on the outer side of the shaft post 14. A rotating base 806 is rotatably connected to the outer side of the shaft post 14. A sliding groove 13 is symmetrically opened on the inner side of the mounting shell 801. The end of the movable block 802 is slidably connected to the inner side of the sliding groove 13. A sliding hole 12 is opened at the end of the mounting shell 801 away from the rotating base 806. The end of the pull rod 804 away from the movable block 802 slides through the sliding hole 12. An operating handle is fixedly installed on one side of the hook 805. 11. The stability of the mounting housing 801 can be ensured by the upper limit rotation of the shaft 14 between the retaining ring 15 of the exchange door 201. At the same time, the sliding groove 13 on the mounting housing 801 can make the movable block 802 slide stably inside the mounting housing 801. The sliding hole 12 on the mounting housing 801 can facilitate the sliding of one end of the pull rod 804 through the inner wall of the mounting housing 801. The operating handle 11 on the hook 805 can facilitate the operation of the hook 805.

[0021] The specific implementation method of this embodiment is as follows: The brush 203 is fixed on the connecting plate 101. After the connecting plate 101 is inserted into the connecting post 105 of the exchange door 201 through the connecting hole 103, the connecting plate 101 is pushed horizontally on the side of the exchange door 201 through the connecting groove 102 until the connecting plate 101 is in a limited position. At this time, the multiple connecting holes 103 on the connecting plate 101 are inserted into the groove 104 of the connecting post 105. By pulling the hook 805, the hook 805 drives the movable block 802 to slide inside the mounting shell 801 through the pull rod 804. The tension spring 803 between the movable block 802 and the mounting shell 801 is stretched. At this time, by rotating the mounting shell 801, the hook 805 is hooked into the hanging block 106 of the connecting plate 101 to complete the installation. Conversely, when the brush 203 needs to be replaced, the hook 805 can be removed and the connecting plate 101 can be pushed out to complete the disassembly.

[0022] Example 3 Please see Figure 9 This invention provides a technical solution: a rotating door device for machine tool exchange worktables. This invention addresses the technical problems mentioned in the background art by making corresponding improvements. The exchange door 201 is composed of a galvanized steel plate layer 2011, a polyester fiber cotton layer 2012, and a damping pad layer 2013. The polyester fiber cotton layer 2012 is disposed between the damping pad layer 2013 and the galvanized steel plate layer 2011. An anti-corrosion coating 2014 is provided on the side of the galvanized steel plate layer 2011 away from the polyester fiber cotton layer 2012. Machine tool processing noise mainly comes from high-speed spindle rotation, cutting impact, chip breakage, and coolant spray, with noise levels reaching 85-100 dB. The exchange door 201 serves as an isolation barrier between the processing area and the loading / unloading area, and its sound insulation design can effectively block the noise propagation path to a certain extent.

[0023] The specific implementation of this embodiment is as follows: by using a galvanized steel plate layer 2011 of a certain thickness to block the transmission of low-frequency noise, such as the sound of spindle rotation, the polyester fiber cotton layer 2012 can absorb mid-to-high frequency noise, such as cutting impact sound, while the rubber damping pad layer 2013 reduces resonance noise through vibration energy dissipation, and the anti-corrosion coating 2014 can provide external protection for the galvanized steel plate layer 2011.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotating door device for a machine tool exchange table, comprising a top crossbeam (301) and an exchange table body (204), characterized in that: A left frame (1) is fixedly installed at one end of the top crossbeam (301), and a right frame (401) is fixedly installed at the other end of the top crossbeam (301). An exchange door (201) is provided at the top of the main body (204) of the exchange workbench. A baffle plate (202) is fixedly installed on the outer side of the exchange door (201). The top of the exchange door (201) is rotatably connected to the inner side of the top crossbeam (301). One side of the top crossbeam (301) is connected by a slider (…). 306) A crossbeam door (302) is slidably connected. The bottom of the crossbeam door (302) is movably connected to the top of the exchange door (201) via a bearing (303). A rubber sheet (304) is fixedly installed on one side of the bottom of the crossbeam door (302) via a pressure plate (305). A brush (203) is fixedly installed on both sides of the exchange door (201) via a connector (10). The exchange door (201) is movably connected via a limiting member (8) and a connector (10).

2. The rotating door device for a machine tool exchange worktable according to claim 1, characterized in that: The top of the exchange door (201) is fixedly installed with a positioning shaft (6), and the inner side of the top beam (301) is provided with a positioning hole (5). The positioning shaft (6) is rotatably connected to the inner side of the top hole.

3. The rotating door device for a machine tool exchange worktable according to claim 1, characterized in that: The crossbeam door (302) and the top crossbeam (301) are symmetrically provided with grooves (7). The slider (306) is fixedly installed inside the groove (7) of the top crossbeam (301). The linear rail (307) is fixedly installed in the groove (7) of the crossbeam door (302). The slider (306) and the linear rail (307) are slidably connected.

4. The rotating door device for a machine tool exchange worktable according to claim 1, characterized in that: The bottom of the crossbeam door (302) is symmetrically fixedly equipped with a support (17), the bearing (303) is located inside the support (17), the top of the exchange door (201) is fixedly equipped with a skirt plate (16), and the lower half of the exchange door (201) is provided with a slope (9).

5. A rotating door device for a machine tool exchange worktable according to claim 1, characterized in that: The connector (10) includes a connecting plate (101), the brush (203) is fixedly installed on one side of the connecting plate (101), the other side of the connecting plate (101) is provided with a connecting groove (102), the inner side of the connecting groove (102) is provided with a connecting hole (103), the outer side of the exchange door (201) is fixedly installed with a connecting column (105), the outer side of the connecting column (105) is provided with a cutting groove (104), the connecting plate (101) and the cutting groove (104) are movably connected, the inner side of the connecting hole (103) in the middle of the connecting plate (101) is fixedly installed with a hanging block (106), and the exchange door (201) is movably connected with the hanging block (106) through a limiting member (8).

6. A rotating door device for a machine tool exchange worktable according to claim 5, characterized in that: The limiting component (8) includes a mounting shell (801), one end of which is fixedly mounted with a rotating seat (806). One end of the mounting shell (801) is rotatably connected to one side of the exchange door (201) via the rotating seat (806). A movable block (802) is slidably connected to the inner side of the mounting shell (801). A tension spring (803) is fixedly mounted between the movable block (802) and the inner wall of the mounting shell (801). A pull rod (804) is fixedly mounted on the side of the movable block (802) away from the tension spring (803). A hook (805) is fixedly mounted on the end of the pull rod (804) away from the movable block (802) that slides through the inner wall of the mounting shell (801). The hook (805) and the hanging block (106) are movably connected.

7. A rotating door device for a machine tool exchange worktable according to claim 6, characterized in that: A shaft column (14) is fixedly installed on one side of the exchange door (201), and a retaining ring (15) is fixedly installed on the outside of the shaft column (14). The rotating seat (806) is rotatably connected to the outside of the shaft column (14).

8. A rotating door device for a machine tool exchange worktable according to claim 6, characterized in that: The mounting shell (801) has symmetrically provided grooves (13) on its inner side, and the end of the movable block (802) is slidably connected to the inner side of the groove (13).

9. A rotating door device for a machine tool exchange worktable according to claim 6, characterized in that: The mounting housing (801) has a sliding hole (12) at one end away from the rotating base (806), and the pull rod (804) slides through the sliding hole (12) at one end away from the movable block (802). An operating handle (11) is fixedly installed on one side of the hook (805).

10. A rotating door device for a machine tool exchange worktable according to claim 1, characterized in that: The exchange door (201) is composed of a galvanized steel plate layer (2011), a polyester fiber cotton layer (2012) and a damping pad layer (2013). The polyester fiber cotton layer (2012) is disposed between the damping pad layer (2013) and the galvanized steel plate layer (2011). The side of the galvanized steel plate layer (2011) away from the polyester fiber cotton layer (2012) is provided with an anti-corrosion coating (2014).