Numerical control cutter jet polishing device

Abstract

The utility model provides a numerical control cutter sprays polishing device belongs to cutter polishing technical field. Polishing device includes frame and polishing assembly. Frame is installed with the cutter of polishing to wait. Polishing assembly includes support and sprays head, and the support includes connecting plate, connecting rod and connecting sleeve, and connecting plate is slidably connected in frame, to make polishing assembly can move along vertical direction relative frame, and connecting plate has sliding groove, and the first end along the self axial of connecting rod can move along sliding groove, to make connecting rod can be close to or away from cutter, and connecting sleeve has clamping cavity, and clamping cavity is configured as the partial structure of accommodating sprays head, to make sprays head can keep relative static with connecting sleeve, and connecting sleeve is rotatably connected with the second end of connecting rod, to make sprays head can adjust the angle of injection relative cutter. The utility model's polishing device can improve the uniformity and efficiency of cutter polishing.

Description

Technical Field

[0001] This utility model relates to the field of tool polishing technology, and in particular to a CNC tool jet polishing device. Background Technology

[0002] In CNC tool manufacturing, removing the surface oxide film is a crucial step in improving tool cutting performance. The presence of the oxide film reduces tool wear resistance, increases machining errors, and shortens tool life. Currently, the mainstream oxide film removal equipment is the wet blasting machine, which, although widely used in the cemented carbide industry, still has significant drawbacks: unstable results (uneven removal due to manual operation), high cost (equipment costing 200,000-500,000 RMB), and complex operation and maintenance (seals need to be replaced more than 80% of the time each month). Existing related improved technical solutions (such as the Chinese invention patent application CN112757172A, "A Liquid Jet Edge Passivation Method for Tapered Ball End Mills") still have limitations: the nozzle can only be raised and lowered vertically, resulting in insufficient edge coverage for large-sized tools, leading to a 30% reduction in efficiency, and small-sized tools are prone to excessive wear due to the fixed distance. Therefore, there is an urgent need for a polishing device that can dynamically adjust the spray position and angle to adapt to tools of various sizes. Utility Model Content

[0003] This invention provides a CNC tool jet polishing device, the purpose of which is to improve the uniformity and efficiency of tool polishing.

[0004] To achieve the above objectives, this utility model provides a CNC tool jet polishing device, comprising: The frame, on which the cutting tools to be polished are mounted; A polishing assembly includes a support and a nozzle. The support includes a connecting plate, a connecting rod, and a connecting sleeve. The connecting plate is slidably connected to the frame to allow the polishing assembly to move vertically relative to the frame. The connecting plate has a sliding groove, and a first end of the connecting rod along its own axial direction is movable along the sliding groove to allow the connecting rod to move closer to or further away from the cutting tool. The connecting sleeve has a clamping cavity configured to accommodate a portion of the nozzle to keep the nozzle relatively stationary with respect to the connecting sleeve. The connecting sleeve is rotatably connected to a second end of the connecting rod to allow the nozzle to adjust its spray angle relative to the cutting tool.

[0005] In one embodiment, the polishing assembly includes a first fastener, which includes a first fastening cap and a first fastening rod. A first end of the first fastening rod along its own axial direction is connected to the first fastening cap. The first fastening rod passes through the sliding groove, and a second end of the first fastening rod is threadedly connected to a first end of the connecting rod, so that the connecting rod can be fixed relative to the connecting plate.

[0006] In one embodiment, the polishing assembly includes a second fastener, which includes a second fastening cap and a second fastening rod. A first end of the second fastening rod along its own axial direction is connected to the second fastening cap. The second fastening rod passes through the connecting sleeve, and a second end of the second fastening rod is threadedly connected to a second end of the connecting rod, so that the connecting sleeve can be fixed relative to the connecting rod.

[0007] In one embodiment, the size of the clamping cavity is greater than or equal to the size of the nozzle, the polishing assembly includes a third fastener, the third fastener includes a third fastening cap and a third fastening rod, a first end of the third fastening rod along its own axial direction is connected to the third fastening cap, the connecting sleeve has a fastening hole communicating with the clamping cavity, and the third fastening rod is threadedly connected to the fastening hole so that the second end of the third fastening rod can be located in the clamping cavity and abut against the nozzle.

[0008] In one embodiment, the frame includes a frame body, a base, and a cutter head. The frame body is disposed on the base, and the cutter head is disposed on the side of the base near the frame body. The polishing device includes a rotation assembly, which includes a second drive member, a mandrel, a first rotation gear, and a second rotation gear. The second drive member is disposed on the frame body and configured to drive the mandrel to rotate. The first rotation gear is disposed at the end of the mandrel opposite to the second drive member. The second rotation gear is rotatably connected to the cutter head and is kept relatively stationary with respect to the cutter. The second rotation gear meshes with the first rotation gear to enable the cutter to rotate.

[0009] In one embodiment, the cutter head is rotatably connected to the base, and there are multiple second rotating gears arranged at intervals along the outer periphery of the first rotating gear. The polishing device includes a revolution assembly, which includes a third driving member and a bushing. The third driving member is disposed on the frame body and configured to drive the bushing to rotate. The bushing is sleeved on the mandrel, and one end of the bushing opposite to the third driving member is connected to the cutter head to drive the cutter head to rotate, so that the cutter can revolve around the rotation center of the bushing.

[0010] In one embodiment, the polishing device includes a tool holder, a first end of which is detachably connected to the second rotating gear, and a second end of which is detachably connected to the cutting tool.

[0011] The above-mentioned solution of this utility model has the following beneficial effects: In this embodiment, the connecting sleeve capable of clamping the nozzle is rotatably connected to the second end of the connecting rod, allowing the nozzle to adjust its spray angle relative to the tool, so that the polishing slurry sprayed by the nozzle can polish the tool at a better angle. The first end of the connecting rod moves along the extension direction of the sliding groove, allowing the nozzle to approach or move away from the tool. On the one hand, when the polishing device is polishing a smaller tool, the nozzle can approach the tool, so that the polishing slurry can be concentrated on the smaller tool, improving the polishing efficiency. On the other hand, when the polishing device is polishing a larger tool, the nozzle can move away from the tool, so as to expand the spray coverage area of ​​the polishing slurry, thereby accelerating the processing speed of larger tools and ensuring that the surface of larger tools is polished more uniformly. The connecting plate is slidably connected to the frame, so that the polishing assembly can move vertically relative to the frame, allowing the polishing slurry sprayed by the nozzle to polish the tool at an appropriate position.

[0012] Other beneficial effects of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the polishing device in one embodiment of the present invention, where the nozzle is not shown. Figure 2 This is an assembly diagram of the bracket, the first fastener, the second fastener, and the third fastener in one embodiment of the present invention, with the connecting plate shown in perspective. Figure 3 This is a cross-sectional structural diagram of the polishing device in one embodiment of the present invention; Figure 4 This is a schematic cross-sectional view of the polishing device in one embodiment of the present invention.

[0014] [Explanation of Labels in the Attached Image] 100. Polishing device; 1. Frame; 11. Frame body; 12. Base; 13. Cutter head; 2. Polishing assembly; 21. Bracket; 211. Connecting plate; 2111. Sliding groove; 212. Connecting rod; 213. Connecting sleeve; 2131. Clamping cavity; 2132. Fastening hole; 22. Nozzle; 23. First fastener; 231. First fastening cap; 24. Second fastener; 241. Second fastening cap; 25. Third fastener; 251. Third fastening cap; 252. Third fastening rod; 31. Second driving component; 32. Mandrel; 33. First rotating gear; 34. Second rotating gear; 41. Third driving component; 42. Bushing; 5. Cutter holder; 6. First driving component; 200. Cutter. Detailed Implementation

[0015] To make the technical problems, solutions, and advantages of this utility model clearer, a detailed description will be provided below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0016] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a locking connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] Please see Figure 1 This application provides a CNC tool 200 spray polishing device 100, which includes a frame 1 and a polishing assembly 2.

[0019] Please see Figure 1 The frame 1 serves as the supporting component of the polishing device 100, and the tool 200 to be polished is installed inside it. The frame 1 can be made of a material with a certain strength and rigidity, such as metal.

[0020] Please see Figure 1 , Figure 2 and Figure 3The polishing assembly 2 includes a bracket 21 and a nozzle 22. For example, the bracket 21 is used to fix the nozzle 22 to the outside of the frame 1. Polishing slurry is sprayed from the nozzle 22 at a preset speed to polish the tool 200. The bracket 21 can be made of a material with certain strength and rigidity, such as metal. The bracket 21 includes a connecting plate 211, a connecting rod 212, and a connecting sleeve 213. The connecting plate 211 is slidably connected to the frame 1 so that the polishing assembly 2 can move vertically relative to the frame 1. For example, please refer to... Figure 1 and Figure 3 The polishing apparatus 100 includes a first drive member 6. The first drive member 6 is mounted on a frame 1. The output shaft of the first drive member 6 is connected to a connecting plate 211 to drive the connecting plate 211 to move vertically relative to the frame 1, thereby enabling the polishing assembly 2 to move vertically relative to the frame 1. The first drive member 6 can be a linear motor. The connecting plate 211 has a sliding groove 2111. The extending direction of the sliding groove 2111 can intersect with the frame 1. A first end of the connecting rod 212 along its own axial direction can move along the sliding groove 2111, so that the connecting rod 212 can approach or move away from the tool 200. The connecting sleeve 213 has a clamping cavity 2131, which is configured to accommodate a portion of the nozzle 22 so that the nozzle 22 can remain relatively stationary with respect to the connecting sleeve 213. The connecting sleeve 213 is rotatably connected to the second end of the connecting rod 212, so that the connecting sleeve 213 can adjust the angle between itself and the connecting rod 212, thereby allowing the nozzle 22 to adjust the spray angle relative to the cutter 200. For example, the spray angle of the nozzle 22 relative to the cutter 200 can be adjusted within the range of 0° to 45°.

[0021] In this embodiment, the connecting sleeve 213, which can hold the nozzle 22, is rotatably connected to the second end of the connecting rod 212, so that the nozzle 22 can adjust the spray angle relative to the tool 200, so that the polishing slurry sprayed by the nozzle 22 can polish the tool 200 at a better angle. The first end of the connecting rod 212 moves along the extension direction of the sliding groove 2111, so that the nozzle 22 can approach or move away from the tool 200. On the one hand, when the polishing device 100 is polishing a smaller tool 200 (e.g., a drill bit with a diameter of 6 mm), the nozzle 22 can approach the tool 200, so that the polishing slurry can be concentrated and sprayed onto the smaller tool 200, thereby improving the polishing efficiency of the tool 200. On the other hand, when the polishing device 100 is polishing a larger tool 200 (e.g., a milling cutter with a diameter of 20 mm), the nozzle 22 can move away from the tool 200, so as to expand the spray coverage area of ​​the polishing slurry, thereby speeding up the processing speed of the larger tool 200 and making the surface of the larger tool 200 more uniformly polished. The connecting plate 211 is slidably connected to the frame 1 so that the polishing assembly 2 can move relative to the frame 1 in the vertical direction, so that the polishing slurry sprayed by the nozzle 22 can polish the tool 200 at the appropriate position.

[0022] In one embodiment, please refer to Figures 1-3 The polishing assembly 2 includes a first fastener 23. The first fastener 23 can be made of a material with certain strength and rigidity, such as metal. The first fastener 23 includes a first fastening cap 231 and a first fastening rod. The first end of the first fastening rod along its own axial direction is connected to the first fastening cap 231. The first fastening rod passes through a sliding groove 2111, and the second end of the first fastening rod is threadedly connected to the first end of a connecting rod 212, so that the connecting rod 212 can be fixed relative to the connecting plate 211. That is, the first fastening cap 231 and the connecting rod 212 are respectively disposed on opposite sides of the connecting plate 211.

[0023] In this embodiment, the diameter of the first fastening cap 231 is larger than the diameter of the first fastening rod, which facilitates the threaded connection between the second end of the first fastening rod and the first end of the connecting rod 212. When the first fastening rod and the connecting rod 212 are securely connected by the first fastening cap 231, the connecting rod 212 can be fixed to the connecting plate 211, so that the distance between the nozzle 22 and the cutter 200 is relatively fixed.

[0024] In one embodiment, please refer to Figures 1-3The polishing assembly 2 includes a second fastener 24, which can be made of a material with certain strength and rigidity, such as metal. The second fastener 24 includes a second fastening cap 241 and a second fastening rod. The first end of the second fastening rod along its own axial direction is connected to the second fastening cap 241. The second fastening rod passes through the connecting sleeve 213, and its second end is threadedly connected to the second end of the connecting rod 212, so that the connecting sleeve 213 can be fixed relative to the connecting rod 212. That is, the second fastening cap 241 and the connecting rod 212 are respectively disposed on opposite sides of the connecting sleeve 213.

[0025] In this embodiment, the diameter of the second fastening cap 241 is larger than the diameter of the second fastening rod, which facilitates the threaded connection between the second end of the second fastening rod and the second end of the connecting rod 212. When the second fastening rod is passed through the connecting sleeve 213 and securely connected to the second end of the connecting rod 212 via the second fastening cap 241, the connecting sleeve 213 can be fixed to the connecting rod 212 to fix the spray angle of the nozzle 22 relative to the blade 200.

[0026] In one embodiment, please refer to Figures 1-3 The size of the clamping cavity 2131 is greater than or equal to the size of the nozzle 22, so that the nozzle 22 can enter the clamping cavity 2131. The polishing assembly 2 includes a third fastener 25, which can be made of a material with certain strength and rigidity, such as metal. The third fastener 25 includes a third fastening cap 251 and a third fastening rod 252. The first end of the third fastening rod 252 along its own axial direction is connected to the third fastening cap 251. The connecting sleeve 213 has a fastening hole 2132 communicating with the clamping cavity 2131. The third fastening rod 252 is threadedly connected to the fastening hole 2132, so that the second end of the third fastening rod 252 can be located in the clamping cavity 2131 and abut against the nozzle 22, so that the nozzle 22 can be clamped more firmly by the connecting sleeve 213 and the third fastener 25.

[0027] In one embodiment, please refer to Figure 3 and Figure 4The frame 1 includes a frame body 11, a base 12, and a cutter head 13. The frame body 11 is mounted on the base 12, and the cutter head 13 is located on the side of the base 12 near the frame body 11. The cutter head 13 can be used to mount the cutting tool 200. The polishing device 100 includes a rotation assembly, which includes a second drive member 31, a spindle 32, a first rotation gear 33, and a second rotation gear 34. The second drive member 31 is mounted on the frame body 11 and is configured to drive the spindle 32 to rotate. For example, the second drive member 31 can be a servo motor. The first rotation gear 33 is located at the end of the spindle 32 opposite to the second drive member 31 and remains relatively stationary with respect to the spindle 32. The second rotation gear 34 is rotatably connected to the cutter head 13. The second rotation gear 34 remains relatively stationary with respect to the cutting tool 200, and the second rotation gear 34 meshes with the first rotation gear 33 to enable the cutting tool 200 to rotate. For example, the second rotating gear 34 may include a protrusion and a gear body. The gear body meshes with the first rotating gear 33. The protrusion passes through the cutter head 13 and is rotatably connected to the cutter head 13 through a bearing. Driven by the first rotating gear 33, the second rotating gear 34 rotates relative to the cutter head 13 so that when the nozzle 22 sprays polishing abrasive, the surface of the cutter 200, which remains relatively stationary with respect to the second rotating gear 34, can be polished more thoroughly.

[0028] In one embodiment, please refer to Figure 3 and Figure 4 The cutter head 13 is rotatably connected to the base 12, meaning the cutter head 13 can rotate relative to the base 12. There are multiple second rotating gears 34, spaced apart along the outer periphery of the first rotating gear 33. Each second rotating gear 34 corresponds to one cutter 200. For example, there are fifteen second rotating gears 34, corresponding to fifteen cutters 200. The polishing device 100 includes a revolution assembly, which includes a third drive member 41 and a bushing 42. The third drive member 41 is disposed on the frame body 11 and configured to drive the bushing 42 to rotate. For example, the third drive member 41 can be a servo motor. The bushing 42 is fitted onto the spindle 32 to reduce the space occupied by the polishing device 100, making the structure of the polishing device 100 more compact. One end of the bushing 42, away from the third drive member 41, is connected to the cutter head 13 to drive the cutter head 13 to rotate relative to the base 12. This allows the cutter 200 to revolve around the rotation center of the bushing 42, enabling the next cutter 200 to be polished relatively quickly after the previous cutter 200 has finished polishing, thus accelerating the polishing cycle of multiple cutters 200. For example, the rotation-revolution transmission ratio of the cutter 200 is in the range of 1:3 to 1:5.

[0029] In one embodiment, please refer to Figure 1 , Figure 3 and Figure 4The polishing device 100 includes a tool holder 5. The first end of the tool holder 5 is detachably connected to the second rotating gear 34, and the second end of the tool holder 5 is detachably connected to the tool 200. This allows the tool 200 to be replaced relatively quickly by removing the tool holder 5 or directly removing the polished tool 200 from the tool holder 5 after polishing.

[0030] For example, the tools 200 to be polished are mounted on the second rotating gear 34 via the tool holder 5, and the tool disc 13 is fully loaded with fifteen tools 200. For smaller tools 200, the distance between the nozzle 22 and the tool 200 is 50 mm, and for larger tools 200, the distance is 150 mm. Compressed air mixed with polishing slurry is sprayed through the nozzle 22 onto the rotating tool 200. The rotation speed of the tool 200 can be 60 r / min, so that the cutting edge of the tool 200 is polished uniformly within a 360° range. After the current tool 200 is polished, for example, if the polishing time is preset to 30 seconds, the tool disc 13 rotates 24° to switch to the next tool 200. Under the polishing of the polishing device 100 of this application, the oxide film removal rate of the tool 200 is greater than 99%, the edge roughness Ra of the tool 200 is ≤0.05 μm, and the edge coverage of larger tools 200 is free of dead corners and the consistency can reach 95%. The rotational speed of the tool 200 in this application can be in the range of 50 r / min to 80 r / min (preferably 60 r / min), the revolution speed of the tool 200 can be in the range of 12 r / min to 18 r / min (preferably 15 r / min), the sandblasting air pressure of the nozzle can be in the range of 0.5 MPa to 0.8 MPa (preferably 0.6 MPa), and the spray angle of the nozzle relative to the tool 200 can be in the range of 90° to 120° (90° for smaller tool 200 and 120° for larger tool 200).

[0031] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A CNC tool jet polishing device, characterized in that, include: The frame, on which the cutting tools to be polished are mounted; A polishing assembly includes a support and a nozzle. The support includes a connecting plate, a connecting rod, and a connecting sleeve. The connecting plate is slidably connected to the frame to allow the polishing assembly to move vertically relative to the frame. The connecting plate has a sliding groove, and a first end of the connecting rod along its own axial direction is movable along the sliding groove to allow the connecting rod to move closer to or further away from the cutting tool. The connecting sleeve has a clamping cavity configured to accommodate a portion of the nozzle to keep the nozzle relatively stationary with respect to the connecting sleeve. The connecting sleeve is rotatably connected to a second end of the connecting rod to allow the nozzle to adjust its spray angle relative to the cutting tool.

2. The CNC tool jet polishing device according to claim 1, characterized in that, The polishing assembly includes a first fastener, which includes a first fastening cap and a first fastening rod. A first end of the first fastening rod along its own axial direction is connected to the first fastening cap. The first fastening rod passes through the sliding groove. A second end of the first fastening rod is threadedly connected to a first end of the connecting rod, so that the connecting rod can be fixed relative to the connecting plate.

3. The CNC tool jet polishing device according to claim 1, characterized in that, The polishing assembly includes a second fastener, which includes a second fastening cap and a second fastening rod. The first end of the second fastening rod along its own axial direction is connected to the second fastening cap. The second fastening rod passes through the connecting sleeve and the second end of the second fastening rod is threadedly connected to the second end of the connecting rod, so that the connecting sleeve can be fixed relative to the connecting rod.

4. The CNC tool jet polishing device according to claim 1, characterized in that, The size of the clamping cavity is greater than or equal to the size of the nozzle. The polishing assembly includes a third fastener, which includes a third fastening cap and a third fastening rod. The first end of the third fastening rod along its own axial direction is connected to the third fastening cap. The connecting sleeve has a fastening hole communicating with the clamping cavity. The third fastening rod is threadedly connected to the fastening hole so that the second end of the third fastening rod can be located in the clamping cavity and abut against the nozzle.

5. The CNC tool jet polishing device according to claim 1, characterized in that, The frame includes a frame body, a base, and a cutter head. The frame body is disposed on the base, and the cutter head is disposed on the side of the base near the frame body. The polishing device includes a rotation assembly, which includes a second drive member, a mandrel, a first rotation gear, and a second rotation gear. The second drive member is disposed on the frame body and configured to drive the mandrel to rotate. The first rotation gear is disposed at the end of the mandrel opposite to the second drive member. The second rotation gear is rotatably connected to the cutter head and is kept relatively stationary with respect to the cutter. The second rotation gear meshes with the first rotation gear to enable the cutter to rotate.

6. The CNC tool jet polishing device according to claim 5, characterized in that, The cutter head is rotatably connected to the base. There are multiple second rotating gears, which are spaced apart along the outer periphery of the first rotating gear. The polishing device includes a revolution assembly, which includes a third driving member and a bushing. The third driving member is disposed on the frame body and is configured to drive the bushing to rotate. The bushing is sleeved on the mandrel, and one end of the bushing away from the third driving member is connected to the cutter head to drive the cutter head to rotate, so that the cutter can revolve around the rotation center of the bushing.

7. The CNC tool jet polishing device according to claim 5, characterized in that, The polishing device includes a tool holder, the first end of which is detachably connected to the second rotating gear, and the second end of which is detachably connected to the cutting tool.

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