Protective device of numerically controlled lathe
By introducing motor-driven brushes and silicone wiping strips into the protective device of CNC machine tools, the problem of blurred transparent windows caused by coolant splashing has been solved, enabling clear observation and convenient replacement, thus improving the machining quality and practicality of CNC machine tools.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-03-17
AI Technical Summary
Coolant splashing on the protective cover of existing CNC machine tools causes the transparent window to become blurred, affecting the observation of machining quality.
Design a protective device comprising a second motor, a reciprocating lead screw, a connecting component, a slot, a block, a brush plate, and a silicone wiping strip. The brush plate is driven by the motor to scrape off coolant stains on a transparent window, and the brush plate can be replaced to improve practicality.
It enables the removal of coolant stains on the transparent window, ensuring that operators can clearly observe the workpiece processing status inside the CNC machine tool, thus improving processing quality and practicality.
Smart Images

Figure CN223997337U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of CNC machine tool technology, and in particular to a protective device for a CNC lathe. Background Technology
[0002] With the rapid development of modern manufacturing, CNC machine tools are increasingly widely used in the field of machining. CNC machine tools control the movement trajectory of the cutting tool through computer programs, achieving high-precision and high-efficiency machining. However, there are some potential safety hazards during the operation of CNC machine tools. For example, chips, coolant, and high-speed rotating cutting tools generated during machining can all cause injury to operators. Therefore, CNC machine tools are usually protected by protective covers.
[0003] However, the protective covers on existing CNC machine tools still have certain defects. For example, although they can protect against chips, coolant and high-speed rotating tools generated during the machining process, the coolant can splash onto the transparent window on the protective cover. This prevents the staff outside the machine tool from clearly observing the machining status of the workpiece inside the CNC machine tool, thus affecting the machining quality of the workpiece. Utility Model Content
[0004] The purpose of this invention is to provide a protective device for CNC lathes that can scrape off coolant stains adhering to the transparent window, thereby facilitating operators to clearly observe the processing status of the workpiece inside the CNC machine tool. The entire brush plate can be replaced, thereby improving practicality.
[0005] To achieve the above objectives, a protective device for a CNC lathe is provided, comprising:
[0006] A CNC machine tool body, wherein a first motor is fixedly connected to the left surface of the CNC machine tool body, a lead screw is fixedly connected to the output end of the first motor, a connecting block is threadedly connected to the outer surface of the lead screw, a protective cover is fixedly connected to the front surface of the connecting block, a slot is provided on the outer surface of the protective cover, a transparent window is slidably connected to the inner surface of the slot, a limit plate is fixedly connected to the upper surface of the transparent window, a second motor is fixedly connected to the left surface of the protective cover, a reciprocating lead screw is fixedly connected to the output end of the second motor, a connecting assembly is threadedly connected to the outer surface of the reciprocating lead screw, a slot is provided on the outer surface of the connecting assembly, a locking block is slidably connected to the inner surface of the slot, a brush plate is fixedly connected to the front end of the locking block, and a silicone wiping strip is provided on the front surface of the brush plate.
[0007] The connecting assembly includes a fixed box, an inclined insert, a slide rod, a limiting block, a spring, a connecting rod, a triangular block, and a pressure block. The inner surface of the fixed box is slidably connected to the inclined insert, the inner surface of the inclined insert is slidably connected to the slide rod, the lower end of the slide rod is fixedly connected to the limiting block, the upper surface of the inclined insert is fixedly connected to the spring, the inner surface of the fixed box is slidably connected to the connecting rod, the left end of the connecting rod is fixedly connected to the triangular block, and the outer surface of the connecting rod is fixedly connected to the pressure block.
[0008] According to the protective device for a CNC lathe, the outer surface of the clamping block is provided with an insertion hole, and the inner surface of the insertion hole is adapted to the inclined insertion block to facilitate the overall fixing of the brush plate.
[0009] According to the protective device for a CNC lathe, the outer surface of the inclined insert is provided with a through groove, and the inner surface of the through groove is in contact with the limiting block, which facilitates the movement of the inclined insert.
[0010] According to the protective device for a CNC lathe, the inner surface of the protective cover is provided with a limiting groove, the inner surface of the limiting groove is adapted to the fixed box, and is used to limit the movement of the fixed box.
[0011] According to the protective device for a CNC lathe, the outer surface of the reciprocating lead screw is rotatably connected to the protective cover, and the rear surface of the transparent window is in contact with a silicone wiping strip to facilitate the removal of water stains from the transparent window.
[0012] According to the protective device for a CNC lathe, the outer surface of the inclined block is slidably connected to the triangular block, and the outer surface of the triangular block is slidably connected to the fixed box.
[0013] According to the protective device for a CNC lathe, the upper end of the slide rod is fixedly connected to the fixed box, the upper end of the spring is fixedly connected to the fixed box, and the lower end of the spring is fixedly connected to the inclined block.
[0014] According to the protective device for a CNC lathe, both the first motor and the second motor are electrically connected to an external power source.
[0015] The above-mentioned solution has the following beneficial effects:
[0016] 1. By setting a second motor, reciprocating lead screw, connecting components, slots, blocks, brush plates and silicone wiping strips, coolant stains adhering to the transparent window can be scraped off, making it easier for operators to clearly observe the processing status of the workpiece inside the CNC machine tool.
[0017] 2. By setting up connecting components and other structures, the entire brush plate can be replaced, thereby improving its practicality.
[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments;
[0020] Figure 1 This is a schematic diagram of the overall structure of a protective device for a CNC lathe according to the present invention;
[0021] Figure 2 This is a partial structural schematic diagram of a protective device for a CNC lathe according to the present invention;
[0022] Figure 3 This is a schematic diagram of the internal structure of a protective device for a CNC lathe according to the present invention;
[0023] Figure 4 for Figure 3 Enlarged structural diagram at point A;
[0024] Figure 5 This is a cross-sectional view of the connecting component structure of a protective device for a CNC lathe according to the present invention;
[0025] Figure 6 This is a schematic diagram of the brush plate structure of a protective device for a CNC lathe according to the present invention;
[0026] Figure 7 This is a partial structural cross-sectional view of a protective device for a CNC lathe according to the present invention.
[0027] Legend:
[0028] 1. CNC machine tool body; 2. First motor; 3. Lead screw; 4. Connecting block; 5. Protective cover; 6. Slot; 7. Transparent window; 8. Limiting plate; 9. Second motor; 10. Reciprocating lead screw; 11. Connecting assembly; 12. Slot; 13. Slot block; 14. Brush plate; 15. Silicone wiping strip; 16. Fixing box; 17. Inclined insert block; 18. Slide rod; 19. Limiting block; 20. Spring; 21. Connecting rod; 22. Triangular block; 23. Pressure block; 24. Insertion hole; 25. Through groove; 26. Limiting groove. Detailed Implementation
[0029] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0030] Reference Figure 1-7 This utility model discloses a protective device for a CNC lathe, comprising: a CNC machine tool body 1; a first motor 2 fixedly connected to the left surface of the CNC machine tool body 1; a lead screw 3 fixedly connected to the output end of the first motor 2; a connecting block 4 threadedly connected to the outer surface of the lead screw 3; a protective cover 5 fixedly connected to the front surface of the connecting block 4; a slot 6 provided on the outer surface of the protective cover 5; a transparent window 7 slidably connected to the inner surface of the slot 6; a limit plate 8 fixedly connected to the upper surface of the transparent window 7; a second motor 9 fixedly connected to the left surface of the protective cover 5; and a reciprocating... The lead screw 10 has a connecting component 11 threadedly connected to its outer surface. The connecting component 11 has a slot 12 on its outer surface. A block 13 is slidably connected to the inner surface of the slot 12. A brush plate 14 is fixedly connected to the front end of the block 13. A silicone wiping strip 15 is provided on the front surface of the brush plate 14. An insertion hole 24 is provided on the outer surface of the block 13. A limit groove 26 is provided on the inner surface of the protective cover 5. The outer surface of the reciprocating lead screw 10 is rotatably connected to the protective cover 5. The rear surface of the transparent window 7 is in contact with the silicone wiping strip 15. The first motor 2 and the second motor 9 are both electrically connected to an external power source.
[0031] The connecting assembly 11 includes a fixing box 16, an inclined insert 17, a slide rod 18, a limiting block 19, a spring 20, a connecting rod 21, a triangular block 22, and a pressure block 23. The inner surface of the fixing box 16 is slidably connected to the inclined insert 17, the inner surface of the inclined insert 17 is slidably connected to the slide rod 18, the lower end of the slide rod 18 is fixedly connected to the limiting block 19, the upper surface of the inclined insert 17 is fixedly connected to the spring 20, the inner surface of the fixing box 16 is slidably connected to the connecting rod 21, the left end of the connecting rod 21 is fixedly connected to the triangular block 22, and the outer surface of the connecting rod 21... The inner surface of the insertion hole 24 is fixedly connected to the pressure block 23. The inner surface of the insertion hole 24 is adapted to the inclined insertion block 17. The outer surface of the inclined insertion block 17 is provided with a through groove 25. The inner surface of the through groove 25 is in contact with the limiting block 19. The inner surface of the limiting groove 26 is adapted to the fixing box 16. The outer surface of the inclined insertion block 17 is slidably connected to the triangular block 22. The outer surface of the triangular block 22 is slidably connected to the fixing box 16. The upper end of the slide rod 18 is fixedly connected to the fixing box 16. The upper end of the spring 20 is fixedly connected to the fixing box 16. The lower end of the spring 20 is fixedly connected to the inclined insertion block 17.
[0032] Working principle: When coolant stains adhere to the transparent window 7, the second motor 9 is started, driving the reciprocating screw 10 to move the brush plate 14 and silicone wiping strip 15 left and right under the action of the connecting assembly 11, thereby scraping off the water stains on the transparent window 7 so that the operator can clearly observe the processing status of the workpiece inside the CNC machine tool body 1. When the brush plate 14 and silicone wiping strip 15 need to be replaced, simply press the pressure block 23 on the connecting assembly 11, driving the connecting rod 21 to move the triangular block 22 along the inclined surface of the inclined insert block 17, so that the inclined insert block 17 moves along the slide rod 18. Move the upper part of the plate upwards and compress the spring 20, thereby disengaging the inclined insert 17 from the interior of the insertion hole 24. This releases the restriction on the brush plate 14 and silicone wiping strip 15 as a whole. Then, pull the brush plate 14 and silicone wiping strip 15 out along the interior of the slot 12 to complete the disassembly. Alternatively, you can pull the handle on the upper surface of the limiting plate 8, which will cause the transparent window 7 to disengage from the interior of the slot 6. Then, disassembling the brush plate 14 and silicone wiping strip 15 as a whole will be simpler because there is no obstruction from the transparent window 7. This also allows for the replacement of any damaged transparent window 7, making it more practical.
[0033] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A guard for a numerically controlled lathe, comprising: The numerical control machine tool body (1), the left surface of the numerical control machine tool body (1) is fixedly connected with a first motor (2), the output end of the first motor (2) is fixedly connected with a lead screw (3), the outer surface of the lead screw (3) is threadedly connected with a connecting block (4), the front surface of the connecting block (4) is fixedly connected with a protective cover (5), the outer surface of the protective cover (5) is provided with a slot (6), the inner surface of the slot (6) is slidably connected with a transparent window (7), the upper surface of the transparent window (7) is fixedly connected with a limiting plate (8), characterized in that the left surface of the protective cover (5) is fixedly connected with a second motor (9), the output end of the second motor (9) is fixedly connected with a reciprocating lead screw (10), the outer surface of the reciprocating lead screw (10) is threadedly connected with a connecting assembly (11), the outer surface of the connecting assembly (11) is provided with a clamping groove (12), the inner surface of the clamping groove (12) is slidably connected with a clamping block (13), the front end of the clamping block (13) is fixedly connected with a brush plate (14), and the front surface of the brush plate (14) is provided with a silica gel wiping strip (15). The connecting assembly (11) comprises a fixed box (16), an inclined plug (17), a sliding rod (18), a limiting block (19), a spring (20), a connecting rod (21), a triangular block (22) and a pressing block (23), the inner surface of the fixed box (16) is slidably connected with the inclined plug (17), the inner surface of the inclined plug (17) is slidably connected with the sliding rod (18), the lower end of the sliding rod (18) is fixedly connected with the limiting block (19), the upper surface of the inclined plug (17) is fixedly connected with the spring (20), the inner surface of the fixed box (16) is slidably connected with the connecting rod (21), the left end of the connecting rod (21) is fixedly connected with the triangular block (22), and the outer surface of the connecting rod (21) is fixedly connected with the pressing block (23).
2. A safeguard for a numerically controlled lathe according to claim 1, characterised in that The outer surface of the clamping block (13) is provided with a jack (24), and the inner surface of the jack (24) is matched with the inclined plug (17).
3. A safeguard for a numerically controlled lathe according to claim 1, wherein The outer surface of the inclined plug (17) is provided with a through groove (25), and the inner surface of the through groove (25) is in contact with the limiting block (19).
4. A safeguard for a numerically controlled lathe according to claim 1, wherein The inner surface of the protective cover (5) is provided with a limiting groove (26), and the inner surface of the limiting groove (26) is matched with the fixed box (16).
5. A safeguard for a numerically controlled lathe according to claim 1, wherein The outer surface of the reciprocating lead screw (10) is rotatably connected with the protective cover (5), and the rear surface of the transparent window (7) is in contact with the silica gel wiping strip (15).
6. A safeguard for a numerically controlled lathe according to claim 1, wherein The outer surface of the inclined plug (17) is slidably connected with the triangular block (22), and the outer surface of the triangular block (22) is slidably connected with the fixed box (16).
7. A safeguard for a numerically controlled lathe according to claim 1, wherein The upper end of the sliding rod (18) is fixedly connected with the fixed box (16), the upper end of the spring (20) is fixedly connected with the fixed box (16), and the lower end of the spring (20) is fixedly connected with the inclined plug (17).
8. A safeguard for a numerically controlled lathe according to claim 1, wherein The first motor (2) and the second motor (9) are electrically connected with an external power supply.