Automatic chip removal structure for numerical control milling machine

Abstract

The utility model discloses an automatic chip removal structure for a numerical control milling machine, which relates to the technical field of numerical control milling machines and comprises a cooling water tank, a machining table is arranged at the top end of the cooling water tank, and a portal frame is mounted in the middle of the front end and the rear end of the cooling water tank; the lower ends of the two sides of the interior of the cooling water tank are rotationally connected with rotating rods correspondingly, and a separating mechanism used for separating cooling water from scrap iron is arranged in the cooling water tank. According to the automatic chip removal structure for the numerical control milling machine, fallen iron chips and cooling water enter the cooling water tank through the machining table, the iron chips and the cooling water can be separated through a filter screen, and the problem that follow-up cleaning is affected due to the fact that the iron chips flow around along with the cooling water is effectively solved; and the scrap iron is screened out, and cooling water can be secondarily utilized after being cooled, so that the cooling water can be recycled repeatedly, and waste of water resources is avoided.

Description

Technical Field

[0001] This utility model relates to the field of CNC milling machine technology, specifically to an automatic chip removal structure for CNC milling machines. Background Technology

[0002] The chip removal device of a CNC milling machine is used to remove the chips generated during machining from the machining area outside the machine tool. The main functions of the chip removal device include preventing chip accumulation from affecting machining accuracy and avoiding thermal deformation of the machine tool or workpiece caused by hot chips. However, traditional automatic chip removal systems are not convenient for automatically separating chips from cooling water, causing chips to easily flow around with the cooling water during subsequent use, leading to complicated cleaning processes.

[0003] To overcome the aforementioned shortcomings, existing technology (Chinese Patent No. CN218081695U, published on 2022-12-20) provides a chip removal device for CNC milling machines, comprising two sets of fixed plates. A first roller and a second roller are rotatably connected to both sides of the two sets of fixed plates, and a conveyor belt is provided on the outer surface of the first roller and the second roller. The device is installed entirely inside the bottom of the CNC milling machine. Iron chips generated during milling fall onto the surface of the conveyor belt, and are then sequentially conveyed and discharged during the operation of the conveyor belt, avoiding the accumulation of iron chips due to simultaneous discharge. Furthermore, during the operation of the conveyor belt, a transmission mechanism drives a scraping brush to rotate in the opposite direction, thereby scraping away the iron chips adhering to the surface of the conveyor belt. The overall scraping effect is good, and the chip discharge process is smoother, effectively improving overall work efficiency.

[0004] The aforementioned mechanism uses a conveyor belt to output iron filings and a brush to clean the surface of the conveyor belt. However, in actual use, CNC milling machines usually require cooling water to cool the machine tool and the workpiece during processing. When the cooling water and iron filings are discharged at the same time, the iron filings will be carried by the cooling water and flow around, causing the iron filings to scatter and affecting the cleaning effect. Utility Model Content

[0005] The purpose of this invention is to provide an automatic chip removal structure for CNC milling machines, in order to solve the problem mentioned in the background art that traditional automatic chip removal is not convenient to automatically separate iron chips from cooling water during use, causing iron chips to easily flow around with the cooling water in subsequent actual use, and making it difficult to separate iron chips from cooling water.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic chip removal structure for a CNC milling machine, comprising a cooling water tank, a machining table at the top of the cooling water tank, and a gantry frame installed at the middle position of the front and rear ends of the cooling water tank, with a machining component installed on one side between the gantry frames; rotating rods are rotatably connected to the lower ends of both sides inside the cooling water tank, and a separation mechanism for separating cooling water and iron filings is provided inside the cooling water tank, the separation mechanism including fan blades, the fan blades being fixedly connected to the outside of the rotating rods; a filter screen is provided at the upper end inside the cooling water tank, and the filter screen is positioned above the fan blades; a fixed base plate is fixedly connected to the bottom end of the cooling water tank, and a positioning limiting mechanism is installed at each of the four corners of the bottom end of the fixed base plate.

[0007] Furthermore, the fan blades are distributed at equal angles on the outside of the rotating rod, and the fan blades are symmetrical about the vertical central axis of the cooling water tank.

[0008] Furthermore, a threaded rod is installed between the front and rear ends inside the cooling water tank, and a movable block is connected to the external thread of the threaded rod. A fixed rod is installed at the bottom end of the movable block, and a connecting spring is installed inside the fixed rod. A cleaning brush is installed at the bottom end of the connecting spring.

[0009] Furthermore, the bottom end of the cleaning brush is attached to the top end of the filter screen, and the cleaning brush and the fixing rod are connected by a spring to form an elastic structure.

[0010] Furthermore, the threaded rod and the rotating rod are connected by a sprocket transmission mechanism, and the movable block and the cooling water tank are slidably connected.

[0011] Furthermore, the limiting mechanism includes a support rod, which is fixedly connected to the four corners at the bottom of the fixed base plate. A suction cup is installed at the bottom of the support rod, and a piston is slidably connected inside the support rod. A connecting rod is installed at the top of the piston, and the top of the connecting rod passes through and extends to the top of the fixed base plate. A sealing gasket is fitted on the outside of the connecting rod at the top of the fixed base plate.

[0012] Furthermore, a reset spring is fixedly connected to both sides of the top of the fixed base plate, and a pressing plate is installed on the top of the reset spring, with the bottom end of the pressing plate fitting against the top of the connecting rod.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The falling iron filings and cooling water enter the cooling water tank through the processing table. The filter screen can separate the iron filings and cooling water, effectively preventing the iron filings from flowing around with the cooling water and affecting subsequent cleaning. At the same time, after separating the cooling water from the iron filings, the iron filings are screened out, and the cooling water can be reused after cooling down, so that the cooling water can be repeatedly circulated and used to avoid waste of water resources.

[0015] Furthermore, after the cooling water passes through the filter screen, it continuously impacts the surface of the fan blades. The impact of the water flow causes the fan blades to rotate, and the rotation of the fan blades continuously agitates the cooling water, thereby increasing the cooling efficiency of the cooling water and making subsequent recycling of the cooling water more convenient.

[0016] Furthermore, the bottom end of the connecting rod moves inward into the support rod, and the piston is pushed downward simultaneously. During the downward movement of the piston, the gas inside the support rod is compressed, causing some of the gas to be discharged from the bottom end of the suction cup. When the connecting rod returns to its original position due to the spring force, the piston extracts the gas inside the suction cup. The gas is compressed and moves upward, and then the gas pushes the sealing gasket upward, causing the gas to be discharged from the exhaust port. At the same time, the sealing gasket automatically returns to its original position due to the spring force and continues to seal the exhaust port. At this time, the suction cup is in a vacuum state, thus completing the fixation of the overall position of the device.

[0017] 2. The sprocket drive mechanism can drive the threaded rod to rotate. When the threaded rod rotates, it is threadedly connected to the movable block, which allows the movable block to move outside the threaded rod. During the movement of the movable block, the fixed rod will move synchronously. The fixed rod and the cleaning brush inside can scrape off the iron filings remaining on the surface of the filter screen, so as to prevent the iron filings from accumulating and affecting the filter screen's separation of iron filings and cooling water.

[0018] Furthermore, a connecting spring is installed inside the fixing rod. The connecting spring can apply a certain pressure to the cleaning brush, so that the cleaning brush can more thoroughly clean the iron filings to the side during the scraping process on the filter screen, thus making the overall use more stable. Attached Figure Description

[0019] Figure 1 This is a front view structural diagram of the present utility model.

[0020] Figure 2 This is a side sectional view of the present invention.

[0021] Figure 3 This is a schematic diagram of the structure of this utility model viewed from below.

[0022] Figure 4This is a partial structural schematic diagram of the separation mechanism of this utility model.

[0023] Figure 5 This is a schematic diagram of the installation mechanism of this utility model.

[0024] Figure 6 This is a schematic diagram of the connection structure between the threaded rod and the movable block of this utility model.

[0025] Figure 7 for Figure 3 Enlarged structural diagram at point A in the middle.

[0026] In the diagram: 1. Cooling water tank; 2. Machining table; 3. Gantry frame; 4. Machining component; 5. Rotating rod; 6. Fan blade; 7. Filter screen; 8. Fixed rod; 9. Cleaning brush; 10. Threaded rod; 11. Movable block; 12. Fixed base plate; 13. Support rod; 14. Suction cup; 15. Piston; 16. Connecting rod; 17. Sealing gasket; 18. Return spring; 19. Pressing plate; 20. Connecting spring. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1: As Figure 1 , Figure 2 , Figure 4 and Figure 6 The technical solution presented addresses the problem of traditional automatic chip removal systems failing to automatically separate iron filings from cooling water, leading to iron filings easily flowing with the cooling water and difficulty in separating them during subsequent use. This automatic chip removal structure for CNC milling machines discloses a separation mechanism, including a cooling water tank 1. A machining table 2 is mounted at the top of the cooling water tank 1, and a gantry frame 3 is installed at the midpoint between the front and rear ends of the cooling water tank 1. A machining component 4 is installed on one side of the gantry frame 3. Rotary rods 5 are rotatably connected to the lower ends of both sides inside the cooling water tank 1. The cooling water tank 1 also contains a separation mechanism for separating cooling water from iron filings. This separation mechanism includes fan blades 6, which are fixedly connected to the outside of the rotating rods 5. A filter screen 7 is located at the upper end inside the cooling water tank 1, positioned above the fan blades 6. The fan blades 6 are evenly distributed outside the rotating rods 5 and are symmetrical about the vertical central axis of the cooling water tank 1.

[0029] In this example, during workpiece processing, the machining component 4 performs cutting and drilling operations. Iron filings generated after cutting and drilling fall through the gaps in the machining table 2. During the machining process, cooling water is sprayed to cool both the workpiece and the machining component 4, preventing the component 4 from overheating and affecting the machining results. The falling iron filings and cooling water enter the cooling water tank 1 through the machining table 2. A filter screen 7 separates the iron filings and cooling water, effectively preventing iron filings from flowing around with the cooling water. This process avoids the problem of impacting subsequent cleaning. Simultaneously, by separating the cooling water from the iron filings, the iron filings are removed, and the cooling water can be reused after cooling, allowing for repeated recycling and preventing water waste. After passing through the filter screen 7, the cooling water continuously impacts the surface of the fan blades 6. The impact of the water flow causes the rotating rod 5 to rotate, and the rotation of the fan blades 6 continuously agitates the cooling water, increasing its cooling efficiency and making subsequent recycling of the cooling water more convenient.

[0030] Example 2: Figure 1 , Figure 2 , Figure 4 and Figure 6 The technical solution shown addresses the problem that iron filings may clog the filter screen 7 during automatic chip removal and separation, affecting the discharge of iron filings and cooling water. The automatic chip removal structure for CNC milling machines discloses a scraping mechanism. A threaded rod 10 is installed between the front and rear ends inside the cooling water tank 1, and a movable block 11 is threadedly connected to the outside of the threaded rod 10. A fixed rod 8 is installed at the bottom of the movable block 11, and a connecting spring 20 is installed inside the fixed rod 8. A cleaning brush 9 is installed at the bottom of the connecting spring 20. The bottom end of the cleaning brush 9 is in contact with the top end of the filter screen 7, and the cleaning brush 9 and the fixed rod 8 form an elastic structure through the connecting spring 20. The threaded rod 10 is connected to the rotating rod 5 through a sprocket transmission mechanism, and the movable block 11 is slidably connected to the cooling water tank 1.

[0031] In this example, during the rotation of the rotating rod 5 and the fan blade 6, the threaded rod 10 can be driven to rotate via the belt drive mechanism. The threaded rod 10 is threadedly connected to the movable block 11 during rotation, allowing the movable block 11 to move outside the threaded rod 10. During the movement of the movable block 11, the fixed rod 8 will move synchronously. The fixed rod 8 and the cleaning brush 9 installed inside can scrape off the iron filings remaining on the surface of the filter screen 7, preventing the iron filings from accumulating and affecting the separation of iron filings and cooling water by the filter screen 7. The fixed rod 8 is equipped with a connecting spring 20, which can apply a certain pressure to the cleaning brush 9, so that the cleaning brush 9 can more thoroughly clean the iron filings to the side during the scraping process on the surface of the filter screen 7, thus making the overall use more stable.

[0032] Example 3: Figure 1 , Figure 3 , Figure 5 and Figure 7 The technical solution shown addresses the problem of easy displacement of the chip removal device during use. This automatic chip removal structure for CNC milling machines discloses a limiting mechanism. A fixed base plate 12 is fixedly connected to the bottom of the cooling water tank 1, and limiting mechanisms for positioning are installed at the four corners of the bottom of the fixed base plate 12. The limiting mechanism includes a support rod 13, which is fixedly connected to the four corners of the bottom of the fixed base plate 12. A suction cup 14 is installed at the bottom of the support rod 13, and a piston 15 is slidably connected inside the support rod 13. A connecting rod 16 is installed at the top of the piston 15, and the top of the connecting rod 16 passes through and extends above the fixed base plate 12. A sealing gasket 17 is sleeved on the outside of the connecting rod 16 at the top of the fixed base plate 12. Return springs 18 are fixedly connected to both sides of the top of the fixed base plate 12, and a pressing plate 19 is installed at the top of the return spring 18. The bottom of the pressing plate 19 is in contact with the top of the connecting rod 16.

[0033] In this example, by applying a certain pressure to the pressing plate 19, the return spring 18 at the bottom of the pressing plate 19 is stressed and shortened. At the same time, the bottom of both ends of the pressing plate 19 applies pressure to the connecting rod 16, thereby pressing the connecting rod 16. The bottom end of the connecting rod 16 moves into the support rod 13, and the piston 15 is pushed downwards in sync. During the downward movement, the piston 15 compresses the gas inside the support rod 13, causing some of the gas to be discharged from the bottom of the suction cup 14. When the connecting rod 16 returns to its original position due to the spring force, the piston 15 pushes the gas inside the suction cup 14 out. When the body is extracted, the gas is compressed and moves upward. The gas then pushes the sealing gasket 17 upward, allowing the gas to be discharged from the exhaust port. At the same time, the sealing gasket 17 automatically resets due to the spring force and continues to seal the exhaust port. The suction cup 14 is in a vacuum state at this time, thus fixing the overall position of the device. By repeatedly pressing the pressing plate 19, the suction cup 14 can always maintain a vacuum state. Moving the sealing gasket 17 upward and simultaneously pressing the connecting rod 16 downward a certain distance will increase the gas inside the suction cup 14, thereby stopping the restriction on the position of the device.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic chip removal structure for a CNC milling machine, comprising a cooling water tank (1), a machining table (2) is provided at the top of the cooling water tank (1), and a gantry frame (3) is installed at the middle position of the front and rear ends of the cooling water tank (1), and a machining component (4) is installed on one side between the gantry frames (3). Its features are: The lower ends of both sides of the cooling water tank (1) are rotatably connected to rotating rods (5), and the interior of the cooling water tank (1) is provided with a separation mechanism for separating cooling water and iron filings. The separation mechanism includes fan blades (6), and the fan blades (6) are fixedly connected to the outside of the rotating rods (5). The upper end of the interior of the cooling water tank (1) is provided with a filter screen (7), and the filter screen (7) is located above the fan blades (6). The bottom of the cooling water tank (1) is fixedly connected to a fixed base plate (12), and a positioning limit mechanism is installed at each of the four corners of the bottom of the fixed base plate (12).

2. The automatic chip removal structure for a CNC milling machine according to claim 1, characterized in that: The fan blades (6) are distributed at equal angles on the outside of the rotating rod (5), and the fan blades (6) are symmetrical about the vertical central axis of the cooling water tank (1).

3. The automatic chip removal structure for a CNC milling machine according to claim 2, characterized in that: A threaded rod (10) is installed between the front and rear ends inside the cooling water tank (1), and a movable block (11) is connected to the external thread of the threaded rod (10). A fixed rod (8) is installed at the bottom of the movable block (11), and a connecting spring (20) is installed inside the fixed rod (8). A cleaning brush (9) is installed at the bottom of the connecting spring (20).

4. An automatic chip removal structure for a CNC milling machine according to claim 3, characterized in that: The bottom end of the cleaning brush (9) is attached to the top end of the filter screen (7), and the cleaning brush (9) and the fixing rod (8) are connected by a spring (20) to form an elastic structure.

5. An automatic chip removal structure for a CNC milling machine according to claim 4, characterized in that: The threaded rod (10) and the rotating rod (5) are connected by a sprocket transmission mechanism, and the movable block (11) and the cooling water tank (1) are connected by a sliding pipe.

6. An automatic chip removal structure for a CNC milling machine according to claim 1, characterized in that: The limiting mechanism includes a support rod (13), and the support rod (13) is fixedly connected to the four corners of the bottom of the fixed base plate (12). A suction cup (14) is installed at the bottom of the support rod (13), and a piston (15) is slidably connected inside the support rod (13). A connecting rod (16) is installed at the top of the piston (15), and the top of the connecting rod (16) passes through and extends to the top of the fixed base plate (12). A sealing gasket (17) is sleeved on the outside of the connecting rod (16) at the top of the fixed base plate (12).

7. An automatic chip removal structure for a CNC milling machine according to claim 6, characterized in that: Both sides of the top of the fixed base plate (12) are fixedly connected with reset springs (18), and the top of the reset springs (18) is equipped with a pressing plate (19). The bottom end of the pressing plate (19) is in contact with the top end of the connecting rod (16).

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