External protection structure of machine tool and machine tool
By setting sheet metal external protective structures and components on machine tools, the problems of time-consuming processes and poor stability of existing machine tool external sheet metal protective structures are solved, achieving a more robust waterproof effect and reduced costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG GENESIS MASCH CO LTD
- Filing Date
- 2025-04-24
- Publication Date
- 2026-06-16
AI Technical Summary
The existing sheet metal protective structure of machine tools is time-consuming to manufacture, has poor long-term stability, and has high material and processing costs. In addition, the lifespan of the sealing ring is reduced due to cutting fluid corrosion and machine tool working environment, resulting in insufficient waterproof structure and increased cost.
The sheet metal external protective structure includes an observation window that penetrates the installation port and a protective component. The protective component consists of a connector and a protective body. The connector is fixedly connected to the sheet metal external protection, and the protective body covers the seam. The bent body abuts against the observation window to form a sealed structure, preventing cutting fluid from splashing.
It improves the protective performance of the machine tool's external sheet metal, prevents cutting fluid from splashing out from the joints, enhances sealing and long-term stability, and reduces material and processing costs.
Smart Images
Figure CN224359820U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of processing equipment technology, and in particular to an external protective structure for a machine tool and the machine tool itself. Background Technology
[0002] Machine tools often require cutting fluid during machining to cool the machining points on the spindle and workpiece, preventing them from overheating. Cutting fluid is typically sprayed at a pressure of 4-5 kg, resulting in random fluid impacts during machining. Machine tools are usually equipped with protective outer sheet metal to prevent cutting fluid from escaping from inside the machine tool.
[0003] Currently, the commonly used protective sheet metal is usually the window frame and the protective frame. The window frame and the protective frame are welded and the joint is glued. The assembly gap between the movable door and window and the window frame is sealed with a traditional sealing ring (see the invention patent with patent publication number CN 107378488 A).
[0004] This solution is not only time-consuming and has poor long-term stability, but also has high material and processing costs. Furthermore, the sheet metal waterproof structure is not tight enough, and the lifespan of the sealing ring is greatly reduced due to cutting fluid corrosion and the influence of the machine tool working environment, which increases costs.
[0005] Therefore, improving the protective performance of the outer sheet metal of machine tools is an urgent problem to be solved. Utility Model Content
[0006] This utility model provides an external protective structure for a machine tool and a machine tool in general, thereby improving the external sheet metal protection performance of the machine tool.
[0007] This utility model provides an external protective structure for a machine tool, including a sheet metal external guard and an observation window. The sheet metal external guard has a through mounting opening, and the observation window is housed within the mounting opening. A seam exists between the observation window and the sheet metal external guard.
[0008] It also includes a protective component located on the side of the sheet metal outer protection and the observation window facing the interior of the machine tool, the protective component covering the seam; wherein, the protective component includes a connecting body and a protective body, the connecting body is fixedly connected to the inner side of the sheet metal outer protection, the protective body is connected to the connecting body, and the protective body covers the seam; the observation window includes a main body and a bent body connected to the main body, the bent body bends towards the interior of the machine tool and abuts against the protective body.
[0009] In some feasible implementations, the protective components are provided on both sides and the top of the observation window, and the bottom of the observation window overlaps with the sheet metal outer protection in the inward and outward directions.
[0010] In some feasible implementations, both the connector and the sheet metal outer protection are made of metal, and the connector and the sheet metal outer protection are fixedly connected by pressure welding; or,
[0011] The connecting body and the observation window are detachably connected by fasteners, which extend in the inward and outward directions, and the protective body and the observation window are in surface contact.
[0012] In some feasible implementations, the sheet metal outer protection includes a main body, a first flange extending inward to the mounting opening, and the connector is connected to the inner side of the first flange and the inner side of the main body via a pressure weld joint surface.
[0013] In some feasible implementations, the connecting body includes a longitudinal plate and a transverse plate that are perpendicular to each other. The two sides of the longitudinal plate are respectively connected to the transverse plate and the protective body. The longitudinal plate is connected to the first folded edge through a pressure weld joint surface, and the transverse plate is connected to the inner side of the main body through a pressure weld joint surface.
[0014] In some feasible embodiments, the protective component further includes a fastening plate connected to the side of the protective body away from the longitudinal plate, the fastening plate, the protective body, and the longitudinal plate forming a receiving groove, the opening of the receiving groove facing the observation window;
[0015] The bending body is disposed on the periphery of the observation window facing the interior of the machine tool. The bending body includes a second folded edge corresponding to the first folded edge. The second folded edge is connected to the periphery of the body. The seam is formed between the first folded edge and the second folded edge. Both the first folded edge and the second folded edge are located within the receiving groove.
[0016] In some feasible embodiments, the bending body further includes a longitudinal body and a transverse body, the longitudinal body, the transverse body, the second folded edge, and the main body enclose to form a cavity structure, the cavity structure extends along the periphery of the observation window, the cavity structure is received in the receiving groove, and the outer wall of the cavity structure is fitted with the inner wall of the receiving groove; the cavity structure is provided with a guide port facing the inside or side of the machine tool, the guide port is used to connect the cavity of the cavity structure and the inside of the machine tool.
[0017] In some feasible implementations, a flow guide is fixedly provided at the bottom of the inner side of the sheet metal outer protection. The flow guide includes a mounting plate and a flow guide plate disposed at the bottom of the mounting plate. The mounting plate is fixedly disposed on the side of the observation window facing the inside of the machine tool. The flow guide plate extends downward at an angle relative to the sheet metal outer protection and is set at an acute angle with the sheet metal outer protection. The flow guide plate covers the joint.
[0018] In some feasible implementations, a sealing element is also provided, which is disposed between the protective element and the sheet metal outer protection, or between the protective element and the observation window.
[0019] This utility model also provides a machine tool, including a base and the aforementioned external protective structure of the machine tool, wherein the external protective structure of the machine tool is disposed on the base.
[0020] The aforementioned machine tool's external protective structure includes a sheet metal outer guard and an observation window. The sheet metal outer guard has a through mounting opening, and the observation window is housed within this opening. A seam exists between the observation window and the sheet metal outer guard. A protective component is also provided, located on the side of the sheet metal outer guard and the observation window facing the interior of the machine tool, and covering the seam. The protective component comprises a connecting body and a protective body. The connecting body is fixedly connected to the inner side of the sheet metal outer guard, and the protective body is connected to the connecting body, covering the seam. The observation window includes a main body and a bent body connected to the main body. The bent body bends inward towards the machine tool and abuts against the protective body. This abutment between the bent body and the protective body of the protective component protects the seam between the observation window and the sheet metal outer guard, preventing cutting fluid from splashing from inside the machine tool to the outside through this seam, thus improving the machine tool's external sheet metal protective performance. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0022] Figure 1 A schematic diagram of the external protective structure of a machine tool provided in an embodiment of this utility model.
[0023] Figure 2 This is a schematic diagram of the back of the external protective structure of a machine tool provided in an embodiment of the present invention.
[0024] Figure 3 This is a perspective sectional view of the external protective structure of a machine tool provided in an embodiment of the present invention.
[0025] Figure 4 This is a partial schematic diagram of the back of the observation window in the external protective structure of a machine tool provided in an embodiment of the present invention.
[0026] Figure 5This is a schematic diagram of the guide component in the external protective structure of a machine tool provided in an embodiment of the present invention.
[0027] Component Symbol Explanation
[0028] 100. Sheet metal outer protection; J. Joint; K. Mounting port; 110. Main body; 120. First fold; 130. Flow guide; 131. Mounting plate; 132. Flow guide plate; 200. Observation window; 210. Body; 220. Bending body; 221. Second fold; 223. Longitudinal body; 222. Transverse body; 201. Cavity structure; 2011. Flow guide port; 300. Protective component; 310. Connecting body; 311. Longitudinal plate; 312. Transverse plate; 320. Protective body; 330. Fastening plate; C. Receiving groove.
[0029] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0030] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0031] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0033] To provide a clearer and more accurate understanding of the present invention, a detailed description will now be provided in conjunction with the accompanying drawings. The accompanying drawings illustrate examples of embodiments of the present invention, wherein the same reference numerals denote the same elements. It is to be understood that the scale shown in the accompanying drawings is not the actual scale of the present invention, but is for illustrative purposes only and is not a drawing based on the original dimensions.
[0034] Please refer to Figure 1 and 2 This utility model provides an external protective structure for a machine tool, including a sheet metal external protective structure 100 and an observation window 200.
[0035] The sheet metal outer guard 100 is used to isolate the inside of the machine tool from the outside, thereby preventing chips and cutting fluid generated during machining from splashing from inside the machine tool to the outside, and avoiding cutting fluid contamination of the external environment. The shape of the sheet metal outer guard 100 is adapted to the shape of the machine tool base, so that it can be installed on the base. The sheet metal outer guard 100 can be made of metal, thus providing good protective performance and strong impact resistance. The sheet metal outer guard 100 has a frame-like structure and is installed on the base. This embodiment only describes a part of the sheet metal outer guard 100 with an observation window 200 installed.
[0036] Please refer to Figure 1 The specific structure of the sheet metal outer protection 100 is described below. In this embodiment, the sheet metal outer protection 100 is provided with a through mounting port K, wherein the through direction is the direction of the machine tool's interior and exterior, and the mounting port K is rectangular. In some other embodiments, the shape of the mounting port K can be other polygons or circles, such as pentagons or hexagons, which can be flexibly adjusted according to the actual situation.
[0037] Please refer to Figure 1 and 3 In this embodiment, the sheet metal outer protection 100 includes a main body 110 and a first flange 120 extending inward to the mounting port K. It can be understood that the main body 110 is plate-shaped and made of metal. The length of the first flange 120 along the inward and outward directions of the machine tool can be 20mm ± 5mm, which facilitates the installation of other structural components on the first flange 120. The first flange 120 can be integrally formed with the main body 110, thus preventing cutting fluid from entering the mounting port K from its periphery and ensuring the seal between the first flange 120 and the main body 110. There can be three first flanges 120, respectively located at the top and both sides of the mounting port K. In some other embodiments, there can also be four first flanges 120, respectively located at the top, bottom, and both sides of the mounting port K.
[0038] Please refer to Figure 1 and 2The observation window 200 is made of transparent material, which facilitates observation of the processing inside the machine tool. It is understood that the observation window 200 is housed within the mounting opening K, and a seam J is formed between the observation window 200 and the sheet metal outer protection 100. The channel containing the seam J extends in the inward and outward directions, and there are three seams J, located at the top and both sides of the mounting opening K. In some other embodiments, there are four seams J, located at the top, bottom, and both sides of the mounting opening K.
[0039] Please refer to Figure 2 and 3 To prevent cutting fluid from splashing out of the machine tool from the joint J along the inside-out direction, the external protective structure of the machine tool also includes a protective component 300. The protective component 300 is located on the side of the sheet metal outer protection 100 and the observation window 200 facing the inside of the machine tool, and the protective component 300 covers the joint J. The protective component 300 faces the joint J along the inside-out direction, which can block the cutting fluid inside the machine tool that is close to the joint J into the machine tool, and prevent the cutting fluid inside the machine tool from contaminating the external environment of the machine tool through the joint J.
[0040] Please refer to Figure 3 The specific structure of the protective component 300 is described below. The protective component 300 includes a connecting body 310 and a protective body 320. The connecting body 310 is fixedly connected to the inner side of the sheet metal outer protection 100. The protective body 320 is connected to the connecting body 310 and covers the joint J. The function of the connecting body 310 is to keep the protective body 320 fixed relative to the sheet metal outer protection 100 and the observation window 200, thereby ensuring continuous protection by the protective body 320. The function of the protective body 320 is to cover the joint J in the inward and outward directions, thereby preventing the cutting fluid inside the machine tool from splashing out of the machine tool from the joint J.
[0041] Please refer to Figure 2 and 3 The connector 310 is bent and extends vertically. The shape of the connector 310 is adapted to the shape of the main body 110 and the first folded edge 120, for example, it is L-shaped, so that the connector 310 has a larger contact area with the main body 110 and the first folded edge 120, and the connector 310 is better connected to the main body 110 and the first folded edge 120. For example, the connector 310 includes two vertically connected plate-like members.
[0042] Please refer to Figure 2 and 3In order to facilitate the connection between the protective component 300 and the sheet metal outer protection 100, and to improve the sealing connection between the protective component 300 and the sheet metal outer protection 100, and to save on sealing components, in this embodiment, the connecting body 310 is connected to the inner side of the first folded edge 120 and the inner side of the main body 110 by pressure welding, thereby improving the strength of the connection between the connecting body 310 and the inner side of the first folded edge 120 and the inner side of the main body 110.
[0043] Please refer to Figure 2 and 3 The structure of the connector 310 is described in detail below. In this embodiment, the connector 310 includes a vertical plate 311 and a horizontal plate 312 that are perpendicular to each other. The two sides of the vertical plate 311 are respectively connected to the horizontal plate 312 and the protective body 320. The vertical plate 311 is connected to the first folded edge 120 by a pressure weld joint surface. The vertical plate 311 and the first folded edge 120 are parallel in the inward and outward directions. The horizontal plate 312 is connected to the inner side of the main body 110 by a pressure weld joint surface. The horizontal plate 312 and the inner side of the main body 110 are parallel to each other along the surface where the main body 110 is located, which facilitates the connection of the connector 310 with the first folded edge 120 and the main body 110. The protective body 320 is plate-shaped. The protective body 320 and the horizontal plate 312 are respectively connected to the two sides of the vertical plate 311. The protective body 320 and the horizontal plate 312 are staggered in the transverse direction, which is the direction of the plate surface where the protective body 320 is located.
[0044] Please refer to Figure 3 and 4 To extend the travel length of the self-protective component 300 into the seam J between the observation window 200 and the protective component 300, thereby increasing the difficulty for the cutting fluid to move from the machine tool interior to the seam J and improving the protective effect between the protective component 300 and the observation window 200, the protective component 300 further includes a fastening plate 330. The fastening plate 330 is connected to the side of the protective body 320 away from the longitudinal plate 311. The fastening plate 330, the protective body 320, and the longitudinal plate 311 enclose and form a receiving groove C, with the opening of the receiving groove C facing the observation window 200. In this way, the travel length of the cutting fluid moving from the machine tool interior to the seam J is increased compared to when the fastening plate 330 is not added. This increases the distance of the fastening plate 330 in the inward and outward directions, making it more difficult for the cutting fluid to move from the machine tool interior to the seam J and ensuring the protective effect of the protective component 300.
[0045] Please refer to Figure 3To further enhance the protective effect of the joint J, the observation window 200 includes a body 210 and a bent body 220 connected to the body 210. The bent body 220 bends inward toward the machine tool and abuts against the protective body 320. By setting the bent body 220, the cutting fluid needs to pass through the outer periphery of the bent body 220 during its movement from the inside of the machine tool to the joint J. Compared with the scheme without adding the bent body 220, the cutting fluid has increased the length of its movement from the inside of the machine tool to the joint J, thus improving the protective effect.
[0046] Please refer to Figure 3 The specific structure of the bending body 220 is described below. The bending body 220 is disposed on the periphery of the observation window 200 facing the interior of the machine tool. The bending body 220 includes a second folded edge 221 corresponding to the first folded edge 120. The second folded edge 221 is connected to the periphery of the body 210. The joint J is formed between the first folded edge 120 and the second folded edge 221. Both the first folded edge 120 and the second folded edge 221 are located within the receiving groove C. It can be understood that the length of the second folded edge 221 in the inward and outward directions is approximately equal to the length of the first folded edge 120 in the inward and outward directions. In this embodiment, the length of the second folded edge 221 in the inward and outward directions is greater than the length of the first folded edge 120 in the inward and outward directions, thereby making the second folded edge 221 closer to the inner wall of the protective member 300 than the first folded edge 120. The second folded edge 221 is more likely to abut against the inner wall of the protective member 300, improving the ability of the second folded edge 221 and the protective member 300 to cover the joint J.
[0047] Please refer to Figure 3 The following describes other structures of the bent body 220. The bent body 220 also includes a longitudinal body 223 and a transverse body 222. The longitudinal body 223, the transverse body 222, the second folded edge 221, and the body 210 enclose a cavity structure 201. The cavity structure 201 extends along the periphery of the observation window 200 and is housed in the receiving groove C. The outer wall of the cavity structure 201 is in contact with the inner wall of the receiving groove C, thereby causing multiple outer walls of the cavity structure 201 to abut against multiple inner walls of the receiving groove C. At least two contact surfaces are formed between the cavity structure 201 and the receiving groove C, and the two contact surfaces are arranged in an L-shape. The two contact surfaces prevent most of the cutting fluid from moving from the inside of the machine tool to the joint J, thus improving the protection effect of the machine tool.
[0048] Please refer to Figure 3 and 4The following describes the specific structure of the cavity structure 201 in the observation window 200. The cavity structure 201 is provided with a guide port 2011 facing the inside of the machine tool or on the side of the cavity structure 201 itself. The guide port 2011 is used to connect the cavity of the cavity structure 201 with the inside of the machine tool. In this way, when cutting fluid enters the two contact surfaces between the cavity structure 201 and the receiving tank C, the cutting fluid will be guided into the cavity structure 201 through the guide port 2011, and then flow to the chip removal groove of the machine tool and then be discharged to the outside of the machine tool, thus preventing the cutting fluid from entering the joint J and improving the protection effect of the cutting fluid.
[0049] Please refer to Figure 2 and 5 Since the cutting fluid flows downwards, the waterproof structure design at the bottom of the observation window 200 is relatively simple. For example, the bottom of the observation window 200 can be designed to be inclined. In this way, the bottom of the inclined observation window 200 has the function of guiding the flow of the cutting fluid and has a protective effect on the bottom joint J between the bottom of the observation window 200 and the sheet metal outer protection 100.
[0050] Please refer to Figure 5 The structure of the flow guide 130 is described in detail below. The flow guide 130 is fixedly installed at the bottom inner side of the sheet metal outer protection 100. The flow guide 130 includes a mounting plate 131 and a flow guide plate 132 disposed at the bottom of the mounting plate 131. The mounting plate 131 is elongated in the horizontal direction, and its height is 20mm ± 5mm. The mounting plate 131 is fixedly installed on the side of the observation window 200 facing the interior of the machine tool. The flow guide plate 132 extends downwards at an angle relative to the sheet metal outer protection 100, and forms an acute angle with the sheet metal outer protection 100. The flow guide plate 132 covers the joint J; that is, the flow guide plate 132 covers the lowest joint J along the inward and outward directions of the machine tool. The flow guide plate 132 forms an obtuse angle with the mounting plate 131, thereby causing the flow guide plate 132 to extend downwards at an angle, ensuring the flow guiding effect. The guide plate 132 extends into the machine tool. The length of the guide plate 132 along its own extension direction is adapted to the vertical height of the mounting plate 131, thereby saving materials on the one hand and ensuring the guiding effect on the other.
[0051] Please refer to Figure 2 In order to facilitate the protection of the sides and top of the observation window 200, the observation window 200 is provided with the protective components 300 on the sides and top. The bottom of the observation window 200 overlaps with the sheet metal outer protection 100 in the inward and outward directions, thus saving the protective component 300 at the bottom of the observation window 200.
[0052] Please refer to Figure 2 and 3To facilitate the connection between the sheet metal outer protection 100 and the protective component 300, and to save on sealing components, both the connecting body 310 and the sheet metal outer protection 100 are made of metal. The connecting body 310 and the sheet metal outer protection 100 are fixedly connected by pressure welding. Alternatively, the connecting body 310 and the observation window 200 are detachably connected by fasteners that extend in the inward and outward directions. The connecting body 310 and the observation window 200 are in surface contact. This surface contact increases the contact area and the area of the contact surface between the connecting body 310 and the observation window 200, thereby improving the protective effect between the connecting body 310 and the observation window 200.
[0053] Of course, in some other embodiments, if there are concerns about significant losses due to the failure of at least one of the protective components 300, the sheet metal outer protection 100, and the observation window 200 during long-term use of the machine tool, a seal can be provided inside the machine tool, allowing the protective component 300 and the seal to provide joint protection and improve the protective effect. Specifically, a seal is also provided, which is disposed between the protective component 300 and the sheet metal outer protection 100, or between the protective component 300 and the observation window 200. The seal can be solid, such as a sealing strip. The seal can also be initially liquid, applied, and then cured into a solid state.
[0054] The aforementioned machine tool's external protective structure includes a sheet metal outer guard 100 and an observation window 200. The sheet metal outer guard 100 has a through mounting opening K, and the observation window 200 is housed within the mounting opening K. A joint J is formed between the observation window 200 and the sheet metal outer guard 100. A protective component 300 is also provided, located on the side of the sheet metal outer guard 100 and the observation window 200 facing the interior of the machine tool. The protective component 300 covers the joint J. The protective component 300 includes a connecting body 310 and a protective body 320, with the connecting body 310 fixed to the inner side of the sheet metal outer guard 100. The protective body 320 is connected to the connecting body 310, and the protective body 320 covers the seam J. The observation window 200 includes a body 210 and a bent body 220 connected to the body 210. The bent body 220 bends into the machine tool and abuts against the protective body 320. Thus, by the bent body 220 abutting against the protective body 320 of the protective component 300, the seam J between the observation window 200 and the sheet metal outer protection 100 is protected, thereby preventing cutting fluid from splashing from inside the machine tool to outside the machine tool from the seam J between the observation window 200 and the sheet metal outer protection 100, thus improving the external sheet metal protection performance of the machine tool.
[0055] This utility model also provides a machine tool, including a base and the aforementioned external protective structure of the machine tool, wherein the external protective structure of the machine tool is disposed on the base.
[0056] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
[0057] The above-listed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.
Claims
1. An external protective structure for a machine tool, comprising a sheet metal external guard (100) and an observation window (200), wherein the sheet metal external guard (100) is provided with a through mounting opening (K), the observation window (200) is received within the mounting opening (K), and a seam (J) is formed between the observation window (200) and the sheet metal external guard (100), characterized in that, It also includes a protective component (300), which is located on the side of the sheet metal outer protection (100) and the observation window (200) facing the interior of the machine tool, and the protective component (300) covers the joint (J); wherein, the protective component (300) includes a connecting body (310) and a protective body (320), the connecting body (310) is fixedly connected to the inner side of the sheet metal outer protection (100), the protective body (320) is connected to the connecting body (310), and the protective body (320) covers the joint (J); the observation window (200) includes a body (210) and a bent body (220) connected to the body (210), the bent body (220) bends toward the interior of the machine tool and abuts against the protective body (320).
2. The external protective structure of the machine tool as described in claim 1, characterized in that, The protective components (300) are provided on both sides and the top of the observation window (200), and the bottom of the observation window (200) overlaps with the sheet metal outer protection (100) in the inward and outward directions.
3. The external protective structure of the machine tool as described in claim 2, characterized in that, Both the connector (310) and the sheet metal outer protection (100) are made of metal, and the connector (310) and the sheet metal outer protection (100) are fixedly connected by pressure welding; or, The connector (310) and the observation window (200) are detachably connected by fasteners that extend in the inward and outward directions, and the protective body (320) and the observation window (200) are in surface contact.
4. The external protective structure of the machine tool as described in claim 2, characterized in that, The sheet metal outer protection (100) includes a main body (110) and a first flange (120) extending to the inside of the mounting port (K). The connector (310) is connected to the inside of the first flange (120) and the inside of the main body (110) by a pressure weld joint surface.
5. The external protective structure of the machine tool as described in claim 4, characterized in that, The connecting body (310) includes a vertical plate (311) and a horizontal plate (312) that are perpendicular to each other. The two sides of the vertical plate (311) are connected to the horizontal plate (312) and the protective body (320) respectively. The vertical plate (311) is connected to the first folded edge (120) through a pressure welded joint surface. The horizontal plate (312) is connected to the inner side of the main body (110) through a pressure welded joint surface.
6. The external protective structure of the machine tool as described in claim 5, characterized in that, The protective component (300) also includes a fastening plate (330), which is connected to the side of the protective body (320) away from the longitudinal plate (311). The fastening plate (330), the protective body (320), and the longitudinal plate (311) together form a receiving groove (C), with the opening of the receiving groove (C) facing the observation window (200). The bending body (220) is disposed on the periphery of the observation window (200) facing the interior of the machine tool. The bending body (220) includes a second fold (221) corresponding to the first fold (120). The second fold (221) is connected to the periphery of the body (210). The seam (J) is formed between the first fold (120) and the second fold (221). Both the first fold (120) and the second fold (221) are located in the receiving groove (C).
7. The external protective structure of the machine tool as described in claim 6, characterized in that, The bent body (220) also includes a longitudinal body (223) and a transverse body (222). The longitudinal body (223), the transverse body (222), the second fold (221), and the body (210) enclose a cavity structure (201). The cavity structure (201) extends along the periphery of the observation window (200). The cavity structure (201) is housed in the receiving groove (C). The outer wall of the cavity structure (201) is in contact with the inner wall of the receiving groove (C). The cavity structure (201) is provided with a guide port (2011) facing the inside or side of the machine tool. The guide port (2011) is used to connect the cavity of the cavity structure (201) with the inside of the machine tool.
8. The external protective structure of the machine tool as described in any one of claims 1-7, characterized in that, A flow guide (130) is fixedly installed at the bottom of the inner side of the sheet metal outer protection (100). The flow guide (130) includes a mounting plate (131) and a flow guide plate (132) disposed at the bottom of the mounting plate (131). The mounting plate (131) is fixedly disposed on the side of the observation window (200) facing the inside of the machine tool. The flow guide plate (132) extends downward at an angle relative to the sheet metal outer protection (100) and is set at an acute angle with the sheet metal outer protection (100). The flow guide plate (132) covers the joint (J).
9. The external protective structure of the machine tool as described in claim 1, characterized in that, It is also provided with a sealing element, which is disposed between the protective element (300) and the sheet metal outer protection (100), or between the protective element (300) and the observation window (200).
10. A machine tool, comprising a base, characterized in that, It also includes the external protective structure of the machine tool as described in any one of claims 1-9, wherein the external protective structure of the machine tool is disposed on the base.