CNC machine tools

Abstract

The present application relates to a CNC machine tool, which includes: a tool magazine for storing cutting tools; a protective door having a closed state for shielding the tool magazine and an open state for exposing the tool magazine; a machine head, which is located on both sides of the tool magazine, and the machine head is capable of approaching the protective door and taking and placing cutting tools in the tool magazine in the open state; a first cleaning structure, which is arranged below the protective door in the vertical direction to receive and clean dirt; and a second cleaning structure, which is arranged above the protective door in the vertical direction and is capable of cleaning the machine head when the machine head approaches the protective door. In the above-mentioned CNC machine tool, the protective door, the first cleaning structure and the second cleaning structure cooperate to effectively prevent dirt generated by workpiece processing, dirt attached to the machine head, and dirt accumulated at the protective door from entering the tool magazine, thereby effectively protecting the cutting tools in the tool magazine.

Description

Technical Field

[0001] The present application relates to the technical field of intelligent processing equipment, and in particular to a CNC machine tool. Background Art

[0002] In conventional CNC machine tools, a tool magazine is formed by storing multiple tools on a tool holder to meet various processing needs such as milling, drilling, boring, and tapping, thereby shortening the processing time and reducing production costs.

[0003] However, when the tool on the machine head is processing the workpiece, chips, coolant, etc. will splash and enter the tool magazine. When the machine head is taking and placing tools from the tool magazine, chips, coolant, etc. attached to the machine head will also enter the tool magazine, causing the tool on the tool holder to be contaminated. Summary of the Invention

[0004] Based on this, it is necessary to provide a CNC machine tool that has a better protective effect on the cutting tool.

[0005] A numerically controlled machine tool, comprising:

[0006] A tool magazine for storing cutting tools;

[0007] A protective door having a closed state for shielding the tool magazine and an open state for exposing the tool magazine;

[0008] The machine head and the tool magazine are respectively located on both sides of the protective door, and the machine head can be close to the protective door and take and place tools in the tool magazine in the open state;

[0009] a first cleaning structure disposed below the protective door in a vertical direction to receive and clean dirt; and

[0010] The second cleaning structure is arranged above the protective door in the vertical direction and can clean the machine head when the machine head approaches the protective door.

[0011] In the above-mentioned CNC machine tool, the protective door, the first cleaning structure and the second cleaning structure work together to effectively prevent the dirt generated by the workpiece processing, the dirt attached to the machine head, and the dirt accumulated on the protective door from entering the tool magazine, thereby effectively protecting the tools in the tool magazine.

[0012] In one embodiment, the first cleaning structure includes a front baffle and a guide box, the front baffle is located below the protective door and extends to the side of the protective door away from the tool magazine to receive dirt, the guide box is located below the protective door and has a plurality of mesh holes that enable the cleaning medium inside the guide box to be sprayed to the front baffle.

[0013] In one embodiment, the front baffle is tilted relative to the protective door and parallel to the axial direction of the mesh; and / or the guide box includes a mesh plate with a plurality of mesh holes, and the mesh plate is perpendicular to the front baffle.

[0014] In one embodiment, the CNC machine tool includes two columns arranged at intervals, and the protective door is connected between the two columns; the machine head is installed between the two columns and can be close to or away from the protective door; the second cleaning structure fills the gap surrounded by the machine head, the protective door and the two columns.

[0015] In one embodiment, the protective door includes a door frame fixed between the two columns and a door leaf rotatably connected to the door frame; the CNC machine tool includes a first detection component located on the side of the protective door facing away from the tool magazine, the first detection component includes a first detection block fixed on the door leaf and a first detection switch fixed on the door frame, the first detection block can trigger the first detection switch when the door leaf rotates to the open state relative to the door frame; and / or, the CNC machine tool includes a second detection component located on the side of the protective door facing the tool magazine, the second detection component includes a second detection block fixed on the door leaf and a second detection switch fixed on the door frame, the second detection block can trigger the second detection switch when the door leaf rotates to the closed state relative to the door frame.

[0016] In one embodiment, the protective door includes a door frame fixed between the two columns and a door leaf rotatably connected to the door frame; the CNC machine tool includes an anti-collision block fixed to the column, and the anti-collision block can abut against the door leaf to limit the first extreme position of the door leaf's rotation relative to the door frame; the protective door includes a limiting folding edge fixed to the door frame, and the limiting folding edge can abut against the door leaf to limit the second extreme position of the door leaf's rotation relative to the door frame.

[0017] In one embodiment, the second cleaning structure is a brush fixed to the protective door and is in close contact with the machine head when the machine head moves relative to the protective door.

[0018] In one embodiment, the tool magazine can approach or move away from the protective door, and the protective door is connected to the tool magazine and is in the open state as the tool magazine gradually approaches and is in the closed state as the tool magazine gradually moves away.

[0019] In one embodiment, the protective door includes a door leaf and a connecting seat detachably connected to the door leaf; the CNC machine tool includes a connecting rod, one end of which is rotatably connected to the connecting seat, and the other end is rotatably connected to the tool magazine.

[0020] In one embodiment, the protective door includes a locking block, a threaded connector and a limiter, the threaded connector sequentially connects the locking block, the door leaf and the connecting seat, and the limiter presses against the threaded connector in a direction perpendicular to the axial direction of the threaded connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0022] Figure 1 A schematic diagram of a partial structure of a CNC machine tool according to an embodiment of the present application;

[0023] Figure 2 for Figure 1 An enlarged schematic diagram of the structure at B in the CNC machine tool shown;

[0024] Figure 3 for Figure 1 A schematic structural diagram of a protective door and its associated structures in a CNC machine tool shown in FIG. 1 , viewed from the opposite direction of the Y-axis;

[0025] Figure 4 for Figure 3 A magnified schematic diagram of the structure at D in the middle;

[0026] Figure 5 for Figure 3 A magnified schematic diagram of the structure at C in the middle;

[0027] Figure 6 for Figure 3 The top view of the AA point in the middle and the enlarged schematic diagram of its local structure;

[0028] Figure 7 for Figure 6 Schematic diagram of the connection structure between the center connecting rod and the door leaf; and

[0029] Figure 8 for Figure 6 A cross-sectional view of the connection structure shown;

[0030] Description of reference numerals:

[0031] 10. CNC machine tool; 11. Protective door; 111. Door frame; 112. Door leaf; 113. Limit folding edge; 114. Connecting seat; 115. Locking block; 117. Limiting piece; 118. First threaded hole; 119. Second threaded hole; 12. Machine head; 121. Main body; 122. Follow-up chip guard; 13. First cleaning structure; 131. Front baffle; 132. Guide box; 133. Mesh; 134. Mesh plate; 14. Second cleaning structure; 15. Column; 16. First detection component; 161. First detection block; 162. First detection switch; 17. Second detection component; 171. Second detection block; 172. Second detection switch; 18. Anti-collision block; 19. Connecting rod. DETAILED DESCRIPTION

[0032] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0033] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0035] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0036] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0037] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0038] Combine Figures 1 to 8 As shown, the present application protects a CNC machine tool 10, which can be used for intelligent processing. Specifically, the CNC machine tool 10 includes a tool magazine (not shown), a protective door 11, a machine head 12, a first cleaning structure 13 and a second cleaning structure 14. Among them, the tool magazine is used to store multiple tools, and the protective door 11 has a closed state that blocks the tool magazine and an open state that exposes the tool magazine. The machine head 12 and the tool magazine are respectively located on both sides of the protective door 11. The machine head 12 can approach the protective door 11 and take and place tools in the tool magazine in the open state. The first cleaning structure 13 is arranged below the protective door 11 in the vertical direction to receive and clean dirt. The second cleaning structure 14 is arranged above the protective door 11 in the vertical direction, and can clean the machine head 12 when the machine head 12 approaches the protective door 11.

[0039] It can be understood that the machine head 12 can remove the required tool from the tool magazine, control the tool to perform machining operations on the workpiece, and return the tool to the tool magazine after the machining operation is completed. When the protective door 11 is open, the machine head 12 can remove the tool from the tool magazine or return the tool to the tool magazine. When the protective door 11 is closed, the machine head 12 cannot remove or place the tool from the tool magazine. In addition, when the protective door 11 is closed, it can act as a barrier between the machine head 12 and the tool magazine, thereby preventing chips, coolant, etc. generated when the machine head 12 controls the tool to process the workpiece from splashing into the tool magazine, thereby protecting the tools in the tool magazine.

[0040] It can be understood that by providing the second cleaning structure 14 above the protective door 11, dirt attached to the machine head 12 can be cleaned before the machine head 12 returns the tool to the tool magazine or removes the tool from the tool magazine, thereby preventing dirt from entering the tool magazine and protecting the tools in the tool magazine. In addition, by providing the first cleaning structure 13 below the protective door 11, dirt that splashes and falls near the protective door 11 can be received and cleaned, thereby maintaining the cleanliness of the protective door 11, preventing dirt from accumulating at the protective door 11 and entering the tool magazine to contaminate the tools, and also facilitating the smooth opening and closing of the protective door 11.

[0041] In the above-mentioned CNC machine tool 10, through the cooperation of the protective door 11, the first cleaning structure 13 and the second cleaning structure 14, the dirt generated by the processing of the workpiece, the dirt attached to the machine head 12, and the dirt accumulated at the protective door 11 can be effectively prevented from entering the tool magazine, thereby effectively protecting the tools in the tool magazine.

[0042] Combine Figure 1 、 Figure 3 and Figure 4 As shown, specifically in the present application, the first cleaning structure 13 includes a front baffle 131 and a guide box 132. The front baffle 131 is located below the protective door 11 and extends to the side of the protective door 11 away from the tool magazine so as to be able to receive dirt. The guide box 132 is located below the protective door 11 and has a plurality of meshes 133 that can enable the cleaning medium inside the guide box 132 to be sprayed to the front baffle 131.

[0043] It is understood that when the workpiece is processed, the chips, coolant, and other dirt generated by the splashing of the protective door 11 will fall onto the front baffle 131 under the protection of the protective door 11. The dirt dropped by the second cleaning structure 14 cleaning the machine head 12 will also accumulate on the front baffle 131. By cleaning the front baffle 131, the dirt can be discharged in time to avoid dirt accumulation.

[0044] It is understood that the guide box 132 is provided with a liquid inlet (not shown), through which an external liquid infusion pipeline introduces a cleaning medium into the guide box 132. The cleaning medium in the guide box 132 is then sprayed out through the mesh 133 to rinse dirt on the front baffle 131. Specifically, the cleaning medium can be water or air.

[0045] It can be understood that by providing the guide box 132 , the cleaning medium introduced through a pipeline can be guided by the guide box 132 and then sprayed out through the multiple mesh holes 133 , thereby avoiding complicated drainage pipeline design.

[0046] In the present application, the plurality of mesh holes 133 are spaced apart from each other and are evenly arranged in a straight line, so that after the cleaning medium is sprayed through the plurality of mesh holes 133 , it can cover a larger area and achieve cleaning of a larger area.

[0047] Specifically, in the present application, the front baffle 131 is tilted relative to the protective door 11 and parallel to the axial direction of the mesh 133. It will be appreciated that by tilting the front baffle 131 relative to the protective door 11, creating an obtuse angle between the two, dirt that falls onto the front baffle 131 can be more easily slid down along the front baffle 131. Furthermore, the axial direction of the mesh 133 is the direction of flow of the cleaning medium when it is ejected from the mesh 133. By aligning the axial direction of the mesh 133 with the front baffle 131, the cleaning medium can be ejected in a direction parallel to the front baffle 131, thereby more easily flushing away dirt that falls onto the front baffle 131.

[0048] Specifically, in the present application, the diverter box 132 includes a mesh plate 134 having a plurality of mesh holes 133, and the mesh plate 134 is disposed perpendicularly to the front baffle 131. It is understood that the diverter box 132 is formed by a plate, and the plate having the plurality of mesh holes 133 is referred to as the mesh plate 134. In the present application, the mesh plate 134 and the front baffle 131 are both metal plates of relatively small thickness, and thus, the axial direction of the mesh holes 133 is the thickness direction of the mesh plate 134. Furthermore, the mesh plate 134 is disposed perpendicularly to the front baffle 131. Since the front baffle 131 is tilted relative to the protective door 11, the mesh plate 134 is also tilted relative to the protective door 11. Consequently, the upper edge of the mesh plate 134 vertically shields the other portions of the mesh plate 134, thereby preventing dirt that falls vertically from entering the mesh holes 133 and clogging them. In other embodiments, the mesh plate 134 may also be a plate with a greater thickness. In this case, the axial direction of the mesh 133 may also be different from the thickness direction of the mesh plate 134 .

[0049] Specifically, the angle θ1 between the front baffle 131 and the vertical direction is 97°. Combined with the fact that the mesh plate 134 is arranged vertically to the front baffle 131, it can be known that the angle between the mesh plate 134 and the vertical direction is θ2 = 7°. Therefore, the mesh plate 134 has only a small inclination relative to the vertical direction. Such a setting can prevent dirt from falling into the mesh 133 while also reducing the projection of the mesh plate 134 along the vertical direction as much as possible, thereby preventing other parts of the guide box 132 connected to the upper edge of the mesh plate 134 from absorbing dirt.

[0050] Combine Figure 1 、 Figure 3 and Figure 5 As shown, specifically in the embodiment of the present application, the CNC machine tool 10 includes two columns 15 arranged at intervals, and the protective door 11 is connected between the two columns 15. The machine head 12 is installed between the two columns 15 and can approach or move away from the protective door 11. The second cleaning structure 14 fills the gap surrounded by the machine head 12, the protective door 11 and the two columns 15. It can be understood that in the process of the machine head 12 approaching or moving away from the protective door 11, the second cleaning structure 14 can not only clean the dirt attached to the surface of the machine head 12, but also the second cleaning structure 14 can continue to fill the gap surrounded by the machine head 12, the protective door 11 and the two columns 15, thereby preventing dirt from entering the tool magazine from the gap between the structures.

[0051] In the present application, the second cleaning structure 14 is a brush fixed to the protective door 11, and is in close contact with the machine head 12 during the movement of the machine head 12 relative to the protective door 11. It can be understood that the second cleaning structure 14 is fixed to the protective door 11, and in the process of the machine head 12 approaching the protective door 11, the machine head 12 also moves relative to the second cleaning structure 14, so that the second cleaning structure 14 cleans the surface of the machine head 12 to remove dirt on the surface of the machine head 12. In addition, in the process of opening or closing the protective door 11, the second cleaning structure 14 can also move with the protective door 11, thereby cleaning the surface of the machine head 12, thereby removing dirt on the surface of the machine head 12, and achieving a better dirt cleaning effect. Furthermore, since the brush is made of a flexible material, it will not cause damage to the surfaces of other components while removing dirt, thereby achieving a better dirt blocking and dirt removal effect.

[0052] Specifically, in this application, the machine head 12 includes a main body 121 and a follower chip guard 122. The main body 121 is slidably mounted between two columns 15. The main body 121 includes a spindle for mounting a tool and a control device for controlling the movement of the spindle. The relevant structure of the main body 121 is not the focus of this application and is not described in detail.

[0053] And for the following chip guard plate 122, it is installed below the main body 121, and can move with the sliding of the main body 121 on the column 15. In addition, the second cleaning structure 14 is close to the following chip guard plate 122, thereby the dirt on the following chip guard plate 122 is cleaned.

[0054] Specifically, in the embodiment of the present application, the protective door 11 includes a door frame 111 fixed between two columns 15 and a door leaf 112 rotatably connected to the door frame 111. It can be understood that in the present application, there are two door leaves 112, and the two door leaves 112 are rotatably connected to the two columns 15 in a one-to-one correspondence, thereby presenting a double-door effect. Furthermore, the two door leaves 112 rotate from the closed state to the side away from the tool magazine, thereby presenting an open state. Such an arrangement allows the door leaf 112 to move on one side of the machine head 12, so that dirt attached to the door leaf 112 will not enter the tool magazine. In other embodiments, only one door leaf 112 can be provided, and by rotatably connecting the door leaf 112 to any one of the two columns 15, the effect of a single door can be presented.

[0055] Combine Figures 1 to 3 As shown, specifically in the present application, the CNC machine tool 10 includes a first detection component 16 located on the side of the protective door 11 away from the tool magazine, the first detection component 16 includes a first detection block 161 fixed to the door leaf 112 and a first detection switch 162 fixed to the door frame 111, and the first detection block 161 can trigger the first detection switch 162 when the door leaf 112 rotates to an open state relative to the door frame 111.

[0056] It can be understood that as the door leaf 112 rotates relative to the door frame 111 and gradually opens, the first detection block 161 rotates with the door leaf 112, gradually approaching and acting on the first detection switch 162. After the door leaf 112 rotates to its full position, that is, when the protective door 11 is open, the first detection block 161 triggers the first detection switch 162, which then sends a signal to the control center of the CNC machine tool 10. When the first detection block 161 and the first detection switch 162 maintain stable contact, the first detection switch 162 continues to send signals to the control center, allowing the control center to determine that the protective door 11 is fully opened. Only then is the machine head 12 allowed to retrieve and place tools from the tool magazine.

[0057] Specifically, the first detection switch 162 is a travel switch. After the connecting rod 19 of the travel switch moves the target travel under the action of the first detection block 161, it will drive the contact of the travel switch to close and realize the conduction of the control circuit, thereby sending an electrical signal.

[0058] Combine Figure 1 、 Figure 3 and Figure 5As shown, in an embodiment of the present application, the CNC machine tool 10 includes a second detection component 17 located on the side of the protective door 11 facing the tool magazine, the second detection component 17 includes a second detection block 171 fixed to the door leaf 112 and a second detection switch 172 fixed to the door frame 111, and the second detection block 171 can trigger the second detection switch 172 when the door leaf 112 rotates to a closed state relative to the door frame 111.

[0059] It can be understood that as the door leaf 112 rotates relative to the door frame 111 and gradually closes, the second detection block 171 rotates with the door leaf 112, thereby gradually approaching and acting on the second detection switch 172. After the door leaf 112 rotates to the desired position, that is, when the protective door 11 is in the closed state, the second detection block 171 triggers the second detection switch 172, and the second detection switch 172 sends a signal to the control center (not shown) of the CNC machine tool 10. When the second detection block 171 and the second detection switch 172 maintain stable contact, the second detection switch 172 continues to send a signal to the control center, so that the control center determines that the protective door 11 is fully closed. At this time, the machine head 12 is allowed to perform processing operations on the workpiece, ensuring that the protective door 11 can play a better protective role.

[0060] Specifically, the second detection switch 172 is a travel switch. After the connecting rod 19 of the travel switch moves the target travel under the action of the second detection block 171, it will drive the contact of the travel switch to close and realize the conduction of the control circuit, thereby sending an electrical signal.

[0061] It should be pointed out that the first detection component 16, the second detection component 17 and the control center work together to realize the coordinated cooperation of tool replacement, workpiece processing operation and opening and closing of the protective door 11, so that the protective door 11 can achieve better protection effect.

[0062] Specifically in an embodiment of the present application, when the protective door 11 includes a door frame 111 fixed between two columns 15 and a door leaf 112 rotatably connected to the door frame 111, the CNC machine tool 10 includes an anti-collision block 18 fixed to the column 15, and the anti-collision block 18 can abut against the door leaf 112 to limit the first extreme position of the door leaf 112 relative to the door frame 111.

[0063] It is understood that if the first detection assembly 16 fails to detect or the door leaf 112 rotates at a high speed relative to the door frame 111, the door leaf 112 will collide hard with the column 15, causing damage to the door leaf 112 and the rotational connection structure between the door leaf 112 and the door frame 111. Therefore, by providing the anti-collision block 18, it can also play a role of extreme limit and buffering during the process of the door leaf 112 from closing to opening, thereby reducing damage to the door leaf 112. Furthermore, the anti-collision block 18 is made of elastic plastic material, which can play a good buffering role.

[0064] Combine Figure 1 、 Figure 3 and Figure 4 As shown, in the present application, the protective door 11 includes a limiting fold 113 fixed to the door frame 111. The limiting fold 113 can abut against the door leaf 112 to limit the second limit position of the door leaf 112 to rotate relative to the door frame 111. It can be understood that during the process of the door leaf 112 from opening to closing, the limiting fold 113 abuts against the door leaf 112 to prevent the door leaf 112 from continuing to rotate relative to the door frame 111, thereby achieving the purpose of limit limiting.

[0065] Specifically, the limiting folding edge 113 has a flat plate portion arranged along the vertical direction, and the door leaf 112 is fitted with the flat plate portion to achieve the limiting purpose.

[0066] Considering that the door frame 111 is generally provided with at least two side frames and a lower frame connected between the two side frames, if the guide box 132 is provided below the lower frame, the lower frame and the guide box 132 will be stacked vertically, resulting in a relatively complex structure. Therefore, in the present application, the applicant has omitted the lower frame and installed both side frames on the upper surface of the guide box 132. In this way, the guide box 132 can not only guide the cleaning medium, so that the mesh plate 134 has a wider cleaning width that can cover the lower part of the two side frames, but also has the function of supporting and connecting the two side frames as the lower frame does.

[0067] Furthermore, the limiting fold 113 is fixed above the guide box 132. When the protective door 11 is closed, the door leaf 112 is precisely accommodated in the space enclosed by the limiting fold 113 and the upper surface of the guide box 132, and the surface of the door leaf 112 on the side away from the tool magazine is exactly flush with the upper edge of the mesh plate 134. In this way, when the protective door 11 is closed, dirt falling in a vertical direction will not accumulate on the upper surface of the guide box 132, but will directly fall onto the front baffle 131. The limiting fold 113 can also prevent a small amount of dirt in the gap between the door leaf 112 and the upper surface of the guide box 132 from entering the tool magazine.

[0068] Specifically, in the embodiment of the present application, the tool magazine can move closer to or further away from the protective door 11. The protective door 11 is connected to the tool magazine and opens as the tool magazine approaches and closes as the tool magazine moves further away. It is understood that as the tool magazine approaches the protective door 11, the protective door 11 gradually opens, thereby facilitating the machine head 12 to remove and place tools from the tool magazine. Conversely, as the tool magazine moves further away from the protective door 11, the protective door 11 gradually closes, thereby preventing the machine head 12 from entering the tool magazine and also providing protection for the tool magazine.

[0069] Combine Figure 1 、 Figure 3 、 Figure 4 、 Figure 6 、 Figure 7 and Figure 8 As shown, specifically in this application, the protective door 11 includes a door leaf 112 and a connecting seat 114 detachably connected to the door leaf 112. The CNC machine tool 10 includes a connecting rod 19, one end of which is rotatably connected to the connecting seat 114 and the other end is rotatably connected to the tool magazine.

[0070] It can be understood that during the movement of the tool magazine, it can drive the connecting rod 19 to move, and further drive the protective door 11 to open and close. In this way, not only the opening and closing control of the protective door 11 becomes simple and convenient, but also the opening and closing of the protective door 11 can be linked to the movement of the tool magazine, ensuring that the protective door 11 can effectively protect the tool magazine.

[0071] In addition, the applicant took into consideration that if the connecting seat 114 is fixedly connected to the door leaf 112, there will be installation errors in the installation of the door leaf 112 and the door frame 111, the installation of the connecting rod 19 and the tool magazine, etc., which will make it impossible for the connecting rod 19 to be accurately connected to the target position on the door leaf 112. Therefore, in this application, the above-mentioned problem can be solved by arranging a connecting seat 114 on the door and making the connecting seat 114 detachable and connected to the door leaf 112.

[0072] Specifically in the present application, the protective door 11 includes a locking block 115, a threaded connector (not shown) and a limiter 117. The threaded connector sequentially connects the locking block 115, the door leaf 112 and the connecting seat 114. The limiter 117 presses against the threaded connector in a direction perpendicular to the axial direction of the threaded connector.

[0073] Considering that the connecting seat 114 is directly threadedly connected to the door leaf 112 by screws, the connecting seat 114, driven by the connecting rod 19, will generate a force along the axial direction of the screw between the door leaf 112. As a result, during the continuous opening and closing of the protective door 11, the screw will be continuously stressed and cause it to retreat, thereby reducing the connection reliability between the connecting seat 114 and the door leaf 112. Therefore, in the present application, a locking block 115 is provided, and a threaded connector is sequentially passed through the locking block 115, the door leaf 112, and the connecting seat 114, thereby connecting the three. The limiting member 117 presses against the threaded connector in a direction perpendicular to the axial direction of the threaded connector, which can lock the threaded connector and prevent the threaded connector from retreating, thereby ensuring a reliable connection between the connecting seat 114 and the door leaf 112.

[0074] Specifically, the locking block 115 is provided with a plurality of first threaded holes 118, and the plurality of threaded connectors correspond one-to-one with the plurality of first threaded holes 118. The threaded connectors penetrate the first threaded holes 118 and connect the locking block 115, the door leaf 112, and the connecting base 114. In the present application, there are four first threaded holes 118 and four threaded connectors. In other embodiments, the number of first threaded holes 118 and four threaded connectors may vary.

[0075] Specifically, locking block 115 is further provided with a second threaded hole 119, which extends perpendicularly to the axial direction of first threaded hole 118 until it connects with first threaded hole 118. Stopper 117, specifically a jackscrew, is threadedly inserted into second threaded hole 119 and engages with it. Furthermore, the distal end of stopper 117 fits neatly between two adjacent teeth on the threaded connector, thereby preventing the connector from retracting in the axial direction.

[0076] Furthermore, there are two second threaded holes 119 , which are arranged in a one-to-one correspondence with the two first threaded holes 118 . There are two limiting members 117 , which are respectively and one-to-one correspondingly passed through the two second threaded holes 119 .

[0077] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0078] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A CNC machine tool, characterized in that: include: A tool magazine for storing cutting tools; A protective door having a closed state for shielding the tool magazine and an open state for exposing the tool magazine; The machine head and the tool magazine are respectively located on both sides of the protective door, and the machine head can be close to the protective door and take and place tools in the tool magazine in the open state; A first cleaning structure is provided below the protective door in a vertical direction to receive and clean dirt; and a second cleaning structure, disposed above the protective door in a vertical direction and capable of cleaning the machine head when the machine head approaches the protective door; The first cleaning structure includes a front baffle and a guide box, wherein the front baffle is located below the protective door and extends to a side of the protective door away from the tool magazine to receive dirt, and the guide box is located below the protective door and has a plurality of mesh holes that enable the cleaning medium inside the guide box to be sprayed to the front baffle; The front baffle is tilted relative to the protective door so that the angle between the two is an obtuse angle and is parallel to the axial direction of the mesh; and / or the guide box includes a mesh plate with a plurality of mesh holes, the mesh plate is perpendicular to the front baffle, and the mesh plate is tilted relative to the protective door.

2. The CNC machine tool according to claim 1, characterized in that: The CNC machine tool includes two columns arranged at intervals, and the protective door is connected between the two columns; the machine head is installed between the two columns and can move close to or away from the protective door; the second cleaning structure fills the gap surrounded by the machine head, the protective door and the two columns.

3. The CNC machine tool according to claim 2, characterized in that: The protective door includes a door frame fixed between the two columns and a door leaf rotatably connected to the door frame; the CNC machine tool includes a first detection component located on the side of the protective door facing away from the tool magazine, the first detection component includes a first detection block fixed on the door leaf and a first detection switch fixed on the door frame, the first detection block can trigger the first detection switch when the door leaf rotates to the open state relative to the door frame; and / or the CNC machine tool includes a second detection component located on the side of the protective door facing the tool magazine, the second detection component includes a second detection block fixed on the door leaf and a second detection switch fixed on the door frame, the second detection block can trigger the second detection switch when the door leaf rotates to the closed state relative to the door frame.

4. The CNC machine tool according to claim 2, characterized in that: The protective door includes a door frame fixed between the two columns and a door leaf rotatably connected to the door frame; the CNC machine tool includes an anti-collision block fixed to the column, and the anti-collision block can abut against the door leaf to limit the first extreme position of the door leaf's rotation relative to the door frame; the protective door includes a limiting folding edge fixed to the door frame, and the limiting folding edge can abut against the door leaf to limit the second extreme position of the door leaf's rotation relative to the door frame.

5. The CNC machine tool according to claim 1 or 2, characterized in that: The second cleaning structure is a brush fixed to the protective door and is in close contact with the machine head when the machine head moves relative to the protective door.

6. The CNC machine tool according to claim 1, characterized in that: The tool magazine can approach or move away from the protective door. The protective door is connected to the tool magazine and is in the open state as the tool magazine gradually approaches and is in the closed state as the tool magazine gradually moves away.

7. The CNC machine tool according to claim 6, characterized in that: The protective door includes a door leaf and a connecting seat detachably connected to the door leaf; the CNC machine tool includes a connecting rod, one end of which is rotatably connected to the connecting seat, and the other end is rotatably connected to the tool magazine.

8. The CNC machine tool according to claim 7, characterized in that: The protective door includes a locking block, a threaded connector and a limiting member. The threaded connector sequentially connects the locking block, the door leaf and the connecting seat. The limiting member presses against the threaded connector in a direction perpendicular to the axial direction of the threaded connector.

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