Numerical control lathe with self-cleaning effect
By designing sliding limit components and spray brush cleaning components on CNC lathes, automated full coverage of self-cleaning function is achieved, solving the problems of time-consuming, labor-intensive and limited coverage of traditional CNC lathe cleaning methods, improving machining accuracy and production efficiency, and reducing equipment maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHUOZHOU RONGDE MOULD CO LTD
- Filing Date
- 2025-06-12
- Publication Date
- 2026-05-19
AI Technical Summary
Traditional CNC lathe cleaning methods rely on manual periodic wiping or disassembly of parts for cleaning, which is time-consuming and labor-intensive. It is difficult to remove debris generated during the machining process in real time, and cleaning of complex structural parts is not thorough. Frequent machine shutdowns for cleaning affect production continuity. In addition, the fixed installation of cleaning components has a limited coverage area and can easily cause liquid splashing and environmental pollution.
A CNC lathe with self-cleaning effect was designed, which adopts a sliding limit component and a spray brush cleaning component. The precise movement of the spray brush cleaning component is achieved through the rolling cooperation between the sliding wheel and the sliding cavity. Combined with the design of the water storage plate and the liquid supply pipe, the cleaning liquid is continuously supplied to cover the machine tool worktable and the main contaminated areas. The cleaning process is seamlessly connected with the processing flow.
It achieves automated all-round cleaning, reduces manual cleaning time, avoids production interruptions caused by frequent downtime, improves processing accuracy and production efficiency, extends equipment life and reduces maintenance costs.
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Figure CN224254867U_ABST
Abstract
Description
Technical Field
[0001] The embodiments disclosed herein relate to the field of CNC machining technology, and more specifically, to a CNC lathe with a self-cleaning effect. Background Technology
[0002] During long-term machining on CNC lathes, metal shavings, coolant residue, and oil stains generated from cutting can easily adhere to the machine tool's worktable, guide rails, and cutting tools. If not cleaned in time, these debris can cause accelerated wear on the guide rails, affect the tool positioning accuracy, and even clog the cooling system, thereby reducing machining efficiency and workpiece quality, and increasing equipment maintenance costs.
[0003] Traditional CNC lathe cleaning methods mostly rely on manual periodic wiping or disassembly of parts for cleaning, which has the following shortcomings: manual cleaning is time-consuming and labor-intensive, and it is difficult to remove debris generated during the machining process in real time; cleaning of complex structural parts (such as guide rail grooves and tool gaps) is not thorough; frequent machine shutdowns for cleaning will interrupt the production process and affect the continuity of automated machining. In addition, some lathes with simple cleaning functions usually have fixed cleaning components with limited coverage, which cannot achieve all-round cleaning, and liquid splashing is easy to cause during the cleaning process, which contaminates the working environment.
[0004] With the increasing automation and intelligence of the manufacturing industry, higher requirements are placed on the self-cleaning function of CNC lathes: they need to achieve synchronous or rapid switching between processing and cleaning to reduce downtime; the cleaning components need to have flexible mobility to cover the entire processing area; and the cleaning process needs to be controllable to avoid secondary pollution to equipment and the environment. Against this background, the development of a CNC lathe that integrates self-cleaning function, has flexible cleaning components, and can work in conjunction with the processing flow has important practical application value. Utility Model Content
[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a CNC lathe with a self-cleaning effect, which solves the problem that the cleaning methods of traditional CNC lathes in the prior art mostly rely on manual periodic wiping or disassembly of parts for cleaning, which has the following shortcomings: manual cleaning is time-consuming and labor-intensive, and it is difficult to remove debris generated during the machining process in real time; cleaning of complex structural parts (such as guide rail grooves and tool gaps) is not thorough; frequent machine stops for cleaning will interrupt the production process and affect the continuity of automated machining. In addition, some lathes with simple cleaning functions usually have their cleaning components fixedly installed, with limited coverage, which cannot achieve all-round cleaning, and the cleaning process is prone to liquid splashing, which pollutes the working environment.
[0006] According to one aspect, at least one embodiment of this disclosure provides a CNC lathe with a self-cleaning effect, comprising:
[0007] A machine tool control box, wherein a mounting frame is provided on the side wall of the machine tool control box;
[0008] A sliding limit assembly is mounted on the machine tool control box;
[0009] A spray brush cleaning assembly is mounted on the machine tool's main control box;
[0010] The sliding limit assembly includes a sliding rail, which is mounted on the machine tool control box. The upper end of the sliding rail has an inwardly opening sliding cavity, and a sliding block is disposed inside the sliding cavity. A mounting block is disposed on the upper end face of the sliding block, and a fixing block is disposed on the upper end face of the mounting block. Bolt screwing holes are disposed on opposite sides of the fixing block. A sliding groove is disposed on the lower end face of the sliding block, and a sliding wheel is disposed inside the sliding groove. The sliding wheel contacts the inner bottom surface of the sliding cavity.
[0011] As a further technical solution, side limiting wheels are provided on opposite sides of the sliding block, and the side limiting wheels are in contact with the inner wall of the sliding cavity.
[0012] As a further technical solution, the spray cleaning assembly includes a mounting plate, which is disposed on the inner side wall of the mounting block. A water storage plate is connected to the mounting plate, and a cleaning nozzle is disposed on the lower end face of the water storage plate. The cleaning nozzle is connected to the internal water cavity of the water storage plate, and a liquid supply pipe is disposed on the upper end face of the water storage plate.
[0013] As a further technical solution, the number of sliding tracks is two, and the water storage plate is disposed between the two sliding tracks.
[0014] As a further technical solution, a machine tool frame is provided on the side wall of the machine tool control box, a CNC tool post is provided on the machine tool frame, and a punching frame is provided at the end of the machine tool frame.
[0015] As a further technical solution, a drive screw is provided inside the machine tool frame, and the CNC tool post is connected to the punching frame pin on the drive screw.
[0016] As a further technical solution, a machine tool protective cover is provided on the upper surface of the fixing block, and the machine tool protective cover fits the outer contour of the machine tool control box.
[0017] As a further technical solution, the fixing block is fitted to the machine tool protective cover, and the fixing block is fixedly connected to the machine tool protective cover through the bolt screw holes.
[0018] The beneficial effects of the embodiments disclosed herein are as follows:
[0019] 1. In this disclosure, the sliding limit assembly, through the rolling cooperation between the sliding wheel and the sliding cavity, combined with the offset restriction of the sliding block by the side limit wheel, can ensure that the spray cleaning assembly moves accurately along a fixed trajectory, so that the cleaning nozzle can specifically flush away debris and oil stains from key parts such as guide rails and cutting tools. This design avoids guide rail wear caused by the accumulation of debris and reduces positioning deviation of the cutting tool due to impurities, thereby ensuring the stability of workpiece machining accuracy. At the same time, timely removal of contaminants inside the equipment can reduce the wear rate of transmission components (such as drive screws), extend the overall service life of the CNC lathe, and reduce downtime maintenance costs caused by equipment failure.
[0020] 2. In this disclosure, the spray brush cleaning component achieves a continuous supply of cleaning fluid through the connection between the water storage plate and the liquid supply pipe. With the reciprocating movement of the sliding limit component, it can cover the main contaminated areas such as the machine tool worktable and CNC tool holder, achieving automated all-round cleaning. Compared with the cumbersome process of traditional manual cleaning that requires stopping the machine and disassembling parts, this design can start the self-cleaning program immediately after processing without manual intervention, greatly shortening the cleaning time. In addition, the cleaning process and the processing flow can be seamlessly connected through the program instructions of the main control box, avoiding production interruption due to frequent machine stoppages for cleaning, significantly improving the automated production efficiency of CNC lathes, and is especially suitable for batch processing scenarios with high requirements for production continuity. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.
[0022] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;
[0023] Figure 2 This is an isometric view of the machine tool protective cover disclosed herein;
[0024] Figure 3 This is an isometric view of the sliding track disclosed herein;
[0025] Figure 4 This is an isometric view of the water storage plate disclosed herein;
[0026] In the diagram: 1. Machine tool control box; 2. Mounting frame; 3. Sliding limit assembly; 3-1. Sliding rail; 3-2. Sliding cavity; 3-3. Sliding block; 3-4. Mounting block; 3-5. Fixing block; 3-6. Bolt tightening hole; 3-7. Slide groove; 3-8. Sliding wheel; 3-9. Side limit wheel; 4. Spray brush cleaning assembly; 4-1. Mounting plate; 4-2. Water storage plate; 4-3. Cleaning nozzle; 4-4. Liquid supply pipe; 5. Machine tool frame; 6. CNC tool holder; 7. Punching frame; 8. Drive screw; 9. Machine tool protective cover. Detailed Implementation
[0027] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.
[0028] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."
[0029] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.
[0030] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0031] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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 disclosure.
[0032] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0033] like Figures 1-4 As shown, it illustrates a CNC lathe with a self-cleaning effect according to this disclosure, comprising:
[0034] Machine tool main control box 1, with a mounting frame 2 installed on the side wall of machine tool main control box 1;
[0035] Sliding limit component 3 is mounted on the machine tool main control box 1;
[0036] Spray brush cleaning component 4 is installed on the machine tool main control box 1;
[0037] The sliding limit assembly 3 includes a sliding rail 3-1, which is mounted on the machine tool control box 1. The upper end of the sliding rail 3-1 has a sliding cavity 3-2, and a sliding block 3-3 is provided inside the sliding cavity 3-2. A mounting block 3-4 is provided on the upper end face of the sliding block 3-3, and a fixing block 3-5 is provided on the upper end face of the mounting block 3-4. Bolt screwing holes 3-6 are provided on opposite sides of the fixing block 3-5. A sliding groove 3-7 is provided on the lower end face of the sliding block 3-3, and a sliding wheel 3-8 is provided inside the sliding groove 3-7. The sliding wheel 3-8 is in contact with the inner bottom surface of the sliding cavity 3-2.
[0038] The spray brush cleaning assembly 4 includes a mounting plate 4-1, which is disposed on the inner side wall of the mounting block 3-4. A water storage plate 4-2 is connected to the mounting plate 4-1. A cleaning nozzle 4-3 is disposed on the lower end face of the water storage plate 4-2. The cleaning nozzle 4-3 is connected to the internal water cavity of the water storage plate 4-2. A liquid supply pipe 4-4 is disposed on the upper end face of the water storage plate 4-2.
[0039] In some examples, the sliding track 3-1 is mounted on the machine tool control box 1, with a sliding cavity 3-2 opening inward at its upper end. A sliding block 3-3 is located within the sliding cavity 3-2. A mounting block 3-4 and a fixing block 3-5 are sequentially mounted on the upper surface of the sliding block 3-3. Bolt screwing holes 3-6 are located on both sides of the fixing block 3-5. A groove 3-7 is located on the lower surface of the sliding block 3-3, and a sliding wheel 3-8 is installed within the groove 3-7. The sliding wheel 3-8 contacts the bottom surface of the sliding cavity 3-2. Furthermore, side limiting wheels 3-9 are located on opposite sides of the sliding block 3-3, fitting against the inner wall of the sliding cavity 3-2. The sliding wheels 3-8 roll on the bottom surface of the sliding cavity 3-2, allowing the sliding block 3-3 to slide smoothly on the sliding track 3-1. This provides a movable support base for the spray cleaning assembly 4 and other related components, facilitating the movement of the cleaning assembly on the machine tool. The main control box 1 can be moved to different positions for cleaning. The bolt screwing holes 3-6 on the fixing block 3-5 can be used to connect other components, such as the machine tool protective cover 9, to facilitate the assembly and fixing of the overall structure and make the connection between the components more stable. The internal water chamber of the water storage plate 4-2 can store cleaning fluid. The liquid supply pipe 4-4 is used to connect to an external cleaning fluid supply source to deliver the cleaning fluid to the water storage plate 4-2, providing the necessary cleaning medium for the cleaning work. The cleaning nozzle 4-3 is connected to the internal water chamber of the water storage plate 4-2 and can spray the cleaning fluid in the water storage plate 4-2 onto the parts that need to be cleaned, such as the machine tool worktable and tools. The cleaning fluid removes debris, oil and other impurities from the surface, realizing automatic cleaning function and reducing the workload and difficulty of manual cleaning. The water storage plate 4-2 is set at 2 Between the sliding rails 3-1, this layout allows the cleaning components to clean the relevant parts of the machine tool evenly during the sliding process. At the same time, the supporting and limiting functions of the sliding rails 3-1 ensure the relative stability of the cleaning nozzles 4-3, improving the consistency of the cleaning effect. The CNC tool holder 6 is used to install cutting tools. Through the transmission of the drive screw 8, the cutting tools can move within a certain range, thereby performing machining operations such as turning on the workpiece. The punching frame 7 can be used to install related punching tools to perform punching processing on the workpiece to meet different processing needs.
[0040] The mounting frame 2 can be used to install some auxiliary components or equipment, such as cleaning fluid storage tanks, control valves, wires and cables, and other components related to the operation or self-cleaning function of the CNC lathe. It serves to organize and fix these components, making the overall layout of the machine tool more reasonable and easier to operate and maintain. However, since the description of the mounting frame 2 in the question is relatively brief, the specific components and functions installed can be designed and adjusted according to actual needs.
[0041] like Figures 1-4 As shown, in this embodiment, side limiting wheels 3-9 are provided on opposite sides of the sliding block 3-3, and the side limiting wheels 3-9 are in contact with the inner sidewall of the sliding cavity 3-2.
[0042] In some examples, the side limiting wheel 3-9 fits against the inner wall of the sliding cavity 3-2, which can prevent the sliding block 3-3 from shifting left or right during the sliding process, ensuring that it slides stably along the direction of the sliding track 3-1, playing a limiting and guiding role, ensuring that the movement trajectory of the cleaning component is accurate, and effectively covering the area that needs to be cleaned.
[0043] For example, such as Figure 3 As shown, there are two sliding tracks 3-1, and the water storage plate 4-2 is set between the two sliding tracks 3-1.
[0044] For example, such as Figure 1 As shown, a machine tool frame 5 is provided on the side wall of the machine tool control box 1, a CNC tool post 6 is provided on the machine tool frame 5, and a punching frame 7 is provided at the end of the machine tool frame 5.
[0045] In some examples, the machine tool frame 5 provides a base for supporting and mounting components such as the CNC tool post 6 and the punching post 7, enabling these machining components to be stably mounted on the CNC lathe, ensuring stability and accuracy during the machining process.
[0046] For example, such as Figure 1 As shown, the machine tool frame 5 is equipped with a drive screw 8 inside, and the CNC tool post 6 and the punching frame 7 are connected to the drive screw 8 by a pin.
[0047] In some examples, the lead screw 8 acts as a transmission component, transmitting power to the CNC tool post 6 and the punching post 7, enabling them to move according to the path and speed set in the program, thereby achieving precise machining actions and improving machining accuracy and efficiency.
[0048] For example, such as Figure 1 As shown, a machine tool protective cover 9 is provided on the upper end face of the fixing block 3-5, and the machine tool protective cover 9 matches the outer contour of the machine tool main control box 1.
[0049] In some examples, the machine tool protective cover 9 covers the outside of the machine tool main control box 1 and related components. It can prevent debris, coolant and other materials generated during the processing from splashing onto the electrical components or other critical parts inside the machine tool, thereby protecting the machine tool equipment, reducing the probability of damage caused by external factors, and extending the service life of the machine tool. At the same time, it can also prevent operators from accidentally coming into contact with the moving parts of the machine tool or dangerous areas such as high temperature and high pressure, providing certain safety protection for operators and reducing the risk of workplace accidents.
[0050] For example, such as Figure 2 As shown, the fixing block 3-5 is fitted with the machine tool protective cover 9, and the fixing block 3-5 is fixedly connected to the machine tool protective cover 9 through the bolt screwing hole 3-6.
[0051] In use, the CNC lathe is centrally controlled by the machine tool control box 1, which manages the machining and self-cleaning functions. The drive screw 8 inside the machine tool frame 5 is driven by a motor to rotate. Through threaded transmission, it drives the CNC tool post 6 and the punching frame 7, which are connected to it by a pin, to move axially. The CNC tool post 6 is equipped with turning tools and can feed in the horizontal or vertical direction to perform turning operations on the workpiece, such as turning the outer diameter, inner diameter, and end face. The punching frame 7 is equipped with punching dies. After moving to the designated position, it can perform punching operations on the workpiece. The CNC system issues program instructions to control the drive screw 8 to drive the CNC tool post 6 and the punching frame 7 to accurately position them to the machining coordinate points, completing automated and high-precision machining.
[0052] In terms of self-cleaning, the sliding block 3-3 relies on the sliding wheel 3-8 at its lower end to roll within the sliding cavity 3-2 of the sliding track 3-1, achieving linear movement along the track. The side limiting wheels 3-9 on both sides of the sliding block 3-3 are in close contact with the inner wall of the sliding cavity 3-2, which can prevent the sliding block 3-3 from deviating and ensure its movement trajectory is stable. The movement of the sliding block 3-3 can be controlled by a CNC system to drive the motor through gear and rack transmission or lead screw transmission; it can also be manually pushed in non-real-time cleaning scenarios.
[0053] During cleaning, external cleaning fluid is injected into the internal water cavity of the water storage plate 4-2 through the supply pipe 4-4. The water storage plate 4-2 serves to temporarily store and stabilize the pressure. The cleaning fluid is then sprayed out through the cleaning nozzle 4-3 at the lower end of the water storage plate 4-2, forming a mist or columnar water flow to wash away debris and oil stains on the machine tool worktable, cutting tools, guide rails, and other parts. At the same time, the sliding limit component 3 drives the spray cleaning component 4 to move back and forth along the sliding track 3-1, so that the cleaning nozzle 4-3 covers the main contaminated areas of the machine tool, achieving all-round cleaning.
[0054] The machine tool protective cover 9 is fixed on the fixed block 3-5 and can move with the sliding limit component 3, or be fixedly covered on the outside of the machine tool. During the cleaning process, it can prevent the cleaning fluid from splashing and protect the internal components from the impact of debris. The mounting bracket 2 is used to install auxiliary equipment such as cleaning fluid pump, control valve, and wires to ensure the power supply and control signal transmission of the cleaning system. For example, the liquid supply pipe 4-4 is connected to the cleaning fluid pump, and the pump is started and stopped by the main control box.
[0055] In actual operation, the workpiece is first fixed on the machine tool worktable. The CNC system controls the drive screw 8 to drive the CNC tool post 6 to complete the turning process. Then, the punching frame 7 moves to the designated position to complete the punching. After the processing is completed, the main control box issues a command to control the motor of the drive sliding limit component 3 to start, which drives the sliding block 3-3 to move along the sliding track 3-1. At the same time, the cleaning fluid pump is started, and the liquid is supplied to the water storage plate 4-2 through the liquid supply pipe 4-4. The sliding block 3-3 drives the water storage plate 4-2 and the cleaning nozzle 4-3 to move back and forth above the machine tool. The cleaning nozzle 4-3 continuously sprays cleaning fluid to wash away residual debris in the processing area. After cleaning is completed, the sliding component returns to its position, the cleaning fluid pump stops working, the machine tool protective cover 9 closes, and it waits for the next processing task.
[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.
Claims
1. A CNC lathe with self-cleaning effect, characterized in that, Include: Machine tool general control box (1), the side wall of machine tool general control box (1) is provided with installation rack (2); The sliding limiting assembly (3) is arranged on the machine tool general control box (1); The spray cleaning assembly (4) is arranged on the machine tool general control box (1); The sliding limiting assembly (3) includes a sliding rail (3-1), the sliding rail (3-1) is arranged on the machine tool general control box (1), the upper end of the sliding rail (3-1) is opened inwards and has a sliding cavity (3-2), the sliding cavity (3-2) is provided with a sliding block (3-3), the upper end surface of the sliding block (3-3) is provided with a mounting block (3-4), the upper end surface of the mounting block (3-4) is provided with a fixed block (3-5), the opposite sides of the fixed block (3-5) are provided with bolt screw holes (3-6), the lower end surface of the sliding block (3-3) is provided with a sliding groove (3-7), the inside of the sliding groove (3-7) is provided with a sliding wheel (3-8), and the sliding wheel (3-8) is in contact with the inner bottom surface of the sliding cavity (3-2).
2. The numerically controlled lathe with self-cleaning effect according to claim 1, characterized in that, The opposite sides of the sliding block (3-3) are provided with side limiting wheels (3-9), and the side limiting wheels (3-9) are in contact with the inner side walls of the sliding cavity (3-2).
3. The numerically controlled lathe with self-cleaning effect according to claim 1, characterized in that, The spray cleaning assembly (4) includes a mounting piece (4-1), the mounting piece (4-1) is arranged on the inner side wall of the mounting block (3-4), the mounting piece (4-1) is connected with a water storage plate (4-2), the lower end surface of the water storage plate (4-2) is provided with a cleaning nozzle (4-3), the cleaning nozzle (4-3) is in communication with the internal water cavity of the water storage plate (4-2), and the upper end surface of the water storage plate (4-2) is provided with a liquid supply pipe (4-4).
4. The numerically controlled lathe with self-cleaning effect according to claim 3, characterized in that, The number of the sliding rail (3-1) is 2, and the water storage plate (4-2) is arranged between the two sliding rails (3-1).
5. The numerically controlled lathe with self-cleaning effect according to claim 1, characterized in that, The side wall of the machine tool general control box (1) is provided with a machine tool rack (5), the machine tool rack (5) is provided with a numerical control tool holder (6), and the tail end of the machine tool rack (5) is provided with a punching rack (7).
6. The numerically controlled lathe with self-cleaning effect according to claim 5, characterized in that, The inside of the machine tool rack (5) is provided with a driving screw (8), and the numerical control tool holder (6) and the punching rack (7) are connected with the driving screw (8) through a pin shaft.
7. The numerically controlled lathe with self-cleaning effect according to claim 1, characterized in that, The upper end surface of the fixed block (3-5) is provided with a machine tool protective cover (9), and the machine tool protective cover (9) is matched with the outer contour of the machine tool general control box (1).
8. The numerically controlled lathe with self-cleaning effect according to claim 7, characterized in that, The fixed block (3-5) is matched with the machine tool protective cover (9), and the fixed block (3-5) is fixedly connected with the machine tool protective cover (9) through the bolt screw holes (3-6).