A bar cutting device for milling cutter processing
The problem of cutting fluid spraying was solved by using a flexible conical wheel that fits in contact with the cutting insert and circulating coolant, achieving clean cooling and automatic grinding, thus improving the efficiency of milling cutter processing and environmental quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 济南新宇硬质合金股份有限公司
- Filing Date
- 2026-05-06
- Publication Date
- 2026-07-21
AI Technical Summary
In existing milling cutter machining equipment, the cutting fluid spray during the cutting process causes a dirty and messy environment and increases production costs. At the same time, the cutting blades are difficult to cool effectively at high temperatures.
A flexible conical wheel is used to fit the cutting blade, and cooling is achieved through coolant circulation. The contact area is adjusted during the cutting process to improve the cooling effect, while a grinding mechanism is used to automatically grind the blade edge.
It achieves spray-free cooling, keeps the processing environment clean, reduces production costs, and improves cutting efficiency and blade sharpness through adaptive cooling and grinding mechanisms.
Smart Images
Figure CN122425248A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of cutting tool processing technology, and more specifically to a bar cutting device for milling cutter processing. Background Technology
[0002] Milling cutters are manufactured from cylindrical bars. Since the bars are often quite long after production, a cutting device is needed. The cutting blades on the cutting device perform deep cutting on the bars to cut them to the specified length.
[0003] Chinese patent document CN217727346U discloses an aluminum alloy bar cutting system, including a mounting base. A motor box is fixedly connected to the middle of one side of the movable mechanism. A fixing ring is fixedly connected to one side of the inner wall of the motor box. A first servo motor is fixedly connected to one side of the inner wall of the fixing ring. A rotating rod is installed at the output end of the first servo motor. A threaded rod is fixedly connected to the front end of the rotating rod. A threaded collar is threadedly connected to one side of the surface of the threaded rod. A connecting plate is fixedly connected to one side of the surface of the threaded collar. The above-mentioned prior art achieves the effect of rapid feeding of aluminum alloy bars and facilitates the improvement of its working efficiency.
[0004] However, the cutting blade generates heat on its surface during machining, requiring the cutting fluid to be sprayed onto the blade surface. But the rotating blade will throw the cutting fluid out, resulting in a dirty and messy machining environment. Furthermore, a filtration device is needed to collect and filter the cutting fluid, increasing production costs. Summary of the Invention
[0005] The purpose of this invention is to address the problems existing in the background art by proposing a bar cutting device for milling cutter processing.
[0006] The technical solution of the present invention: A bar cutting device for milling cutter processing includes a support base and a positioning mechanism. The positioning mechanism is installed on the support base and is used for positioning the bar. It also includes: a processing table installed on the side of the support base; a cooling mechanism installed inside the processing table; a cutting blade installed inside the cooling mechanism and used for bar processing; and a grinding mechanism installed on the cooling mechanism and used for grinding the cutting blade. The cooling mechanism includes a drive assembly, a cooling assembly, a conveying assembly, an adjusting assembly, and a moving part. The drive assembly is installed inside the processing table, the moving part is installed on the drive assembly and moves along the drive assembly, and the cutting blade is installed on the moving part and cuts the bar as the moving part moves. The adjusting assembly is installed on the moving part and is used to adjust the contact force between the cooling assembly and the cutting blade as the moving part moves. The cooling assembly is installed on the adjusting assembly and is used to contact the cutting blade for cooling and reducing its temperature. The drive assembly drives the cutting blade to move and cut the bar, the cooling assembly contacts the cutting blade to cool it, and the adjusting assembly adjusts the contact force between the cooling assembly and the cutting blade.
[0007] Preferably, the drive assembly includes a drive component, a protective housing, and a drive device; the drive component is installed inside the machining table, and a movable part is connected to the movable end of the drive component; the protective housing is installed on the movable part; the drive device is installed inside the protective housing, and its output shaft is connected to the cutting blade.
[0008] Preferably, the adjustment assembly includes a guide portion, an elastic element, and a clamping portion; the guide portion is installed in the inner cavity of the processing table; the fixed end of the elastic element is connected to the moving portion, and the movable end moves along the surface of the guide portion; the clamping portion is connected to the elastic element and moves with the elastic element.
[0009] Preferably, the guide section is provided with an inclined surface, a horizontal surface one, and a horizontal surface two; the drive assembly drives the moving part to move along the guide section, and the elastic element one moves along the inclined surface and the horizontal surface one; the elastic element one moves to the horizontal surface two, and the grinding mechanism grinds the cutting blade.
[0010] Preferably, the cooling assembly includes a flexible conical wheel, a second drive device, a T-shaped rod, a hollow rod, and an elastic support member; the second drive device is installed at the movable end of the adjustment assembly; the output shaft of the second drive device is connected to the T-shaped rod; the inner wall of the hollow rod is connected to the T-shaped rod; the outer wall of the hollow rod is connected to the fixed end of the elastic support member; the flexible conical wheel is installed on the outer side of the hollow rod; the movable end of the elastic support member is in contact with the flexible conical wheel.
[0011] Preferably, the delivery assembly includes an input pipe, an output pipe, and a cooling device; the output pipe is sleeved on the end of the hollow rod near the T-shaped rod and communicates with the inner cavity of the hollow rod; the input pipe communicates with the end of the hollow rod away from the T-shaped rod; both the input pipe and the output pipe are connected to a liquid delivery device; the cooling device is mounted on the processing table; the input pipe and the output pipe are connected to the cooling device through the liquid delivery device, so that the coolant circulates in the inner cavity of the hollow rod.
[0012] Preferably, the polishing mechanism includes an elastic element two, a polishing plate, a pull rope, and a triggering assembly; the two ends of the elastic element two are respectively connected to the moving part and the polishing plate; the two ends of the pull rope are respectively connected to the clamping part and the polishing plate; and the triggering assembly is installed inside the moving part.
[0013] Preferably, the triggering component includes an elastic element three, a snap-fit plate, a push rod, and a snap-fit block; the two ends of the elastic element three are respectively connected to the moving part and the push rod; the snap-fit plate is mounted on the push rod; the snap-fit block is mounted on the clamping part; when the clamping part drives the snap-fit block to snap-fit with the snap-fit plate, the grinding plate contacts the cutting blade.
[0014] Compared with the prior art, the above-mentioned technical solution of the present invention has the following beneficial technical effects: The clamping plate and clamping components position the bar stock within the clamping seat and transport the bar stock towards the processing table via the support base. Then, the drive device is activated to rotate the cutting blade, and the drive components drive the cutting blade to move. The high-speed rotating cutting blade performs cutting processing on the rows of bar stock.
[0015] Simultaneously, the infusion device is activated to supply coolant from the cooling device through the inlet pipe to the hollow rod, and then discharge it through the outlet pipe, filling the flexible conical wheel with coolant. At the same time, the flexible conical wheel is in contact with the cutting blade. Then, the drive device is activated to rotate the T-shaped rod, which in turn rotates the hollow rod and the flexible conical wheel. This achieves cooling of the cutting blade through contact between the flexible conical wheel and the cutting blade, eliminating the need for spraying coolant, which would cause liquid to be splashed on the device surface, resulting in a dirty and messy device.
[0016] As the cutting time of the cutting blade increases, more and more bar stock is cut, leading to increased heat due to the extended processing time. As the clamping part moves along the guide part, the elastic element drives the flexible conical wheel to contact the surface of the cutting blade along the inclined surface. Through the extensibility of the flexible conical wheel and the support of the elastic support element, the flexible conical wheel spreads across the surface of the cutting blade, increasing the contact area between the flexible conical wheel and the cutting blade. This results in a gradual increase in the contact area between the flexible conical wheel and the cutting blade as the cutting blade cuts rows of bar stock, thus improving the cooling effect.
[0017] After prolonged use, the drive unit can move the elastic element one towards the horizontal plane two. At this time, the elastic element one is pushed by the horizontal plane two, causing the clamping part to move to the farthest distance. The pull rope is released, causing the elastic element two to move the grinding plate towards the cutting blade, so that the grinding plate contacts the edge of the cutting blade, and the locking block engages with the locking plate to fix the position of the grinding plate. Then, the drive unit drives the moving part to reset. During this process, the cutting blade continues to rotate, thereby grinding the cutting blade through the grinding plate. When the push rod is pushed by the processing table to reset, it causes the locking plate to separate from the locking block, causing the clamping part to reset. Thus, the edge of the cutting blade is ground during the resetting process of the cutting blade, ensuring that the cutting blade can remain sharp. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the processing table proposed in this invention; Figure 3 This is a schematic diagram of the cutting blade proposed in this invention; Figure 4 This is a schematic diagram of the flexible conical wheel proposed in this invention; Figure 5 This is a schematic diagram of the infusion device proposed in this invention; Figure 6 This is a schematic diagram of the structure of the elastic support member proposed in this invention; Figure 7 This is a schematic diagram of the clamping part proposed in this invention; Figure 8 This is a schematic diagram of the structure of the elastic element three proposed in this invention; Reference numerals: 1. Support base; 2. Clamping seat; 3. Clamping plate; 4. Clamping component; 5. Drive component; 6. Moving part; 7. Protective shell; 8. Drive device one; 9. Cutting blade; 10. Machining table; 11. Guide part; 12. Inclined surface; 13. Horizontal surface one; 14. Horizontal surface two; 15. Elastic component one; 16. Clamping part; 17. Flexible conical wheel; 18. Drive device two; 19. T-shaped rod; 20. Hollow rod; 21. Input pipe; 22. Infusion device; 23. Elastic component two; 24. Grinding plate; 25. Pull rope; 26. Elastic component three; 27. Snap-fit plate; 28. Push rod; 29. Snap-fit block; 30. Output pipe; 31. Elastic support component; 32. Cooling device. Detailed Implementation
[0019] Example 1, as Figures 1-8As shown, the present invention proposes a bar cutting device for milling, comprising a support base 1 and a positioning mechanism, wherein the positioning mechanism is mounted on the support base 1 and is used for positioning the bar; further comprising: a processing table 10, which is mounted on the side of the support base 1; a cooling mechanism, which is mounted inside the processing table 10; a cutting blade 9, which is mounted inside the cooling mechanism and is used for bar processing; and a grinding mechanism, which is mounted on the cooling mechanism and is used for grinding the cutting blade 9; the cooling mechanism includes a drive assembly, a cooling assembly, a conveying assembly, an adjusting assembly, and a moving part 6; the drive assembly is mounted inside the processing table 10, and the moving part 6... The moving part 6 is mounted on the drive assembly and moves along the drive assembly. The cutting blade 9 is mounted on the moving part 6 and moves with the moving part 6 to cut the bar stock. The adjusting assembly is mounted on the moving part 6 and is used to adjust the contact force between the cooling assembly and the cutting blade 9 as the moving part 6 moves. The cooling assembly is mounted on the adjusting assembly and is used to contact the cutting blade 9 to cool it down. The drive assembly drives the cutting blade 9 to move and cut the bar stock. The cooling assembly contacts the cutting blade 9 to cool it down, and the contact force between the cooling assembly and the cutting blade 9 is adjusted by the adjusting assembly.
[0020] The positioning mechanism includes a clamping seat 2, a clamping plate 3, and a clamping component 4; there are multiple positioning mechanisms, all of which are located on the support base 1; the support base 1 is equipped with a driving mechanism that can drive the positioning mechanism to move; the driving mechanism includes a clamping seat 2, a clamping plate 3, and a clamping component 4; the clamping seat 2 is installed on the support base 1, and the clamping plate 3 is installed on the side of the clamping seat 2 to limit the bar stock from the side of the row of bars, and then the clamping component 4 is activated to clamp and limit the bar stock from above.
[0021] The drive assembly includes a drive component 5, a protective housing 7, and a drive device 8. The drive component 5 is installed inside the processing table 10, and the moving part 6 is connected to the movable end of the drive component 5. The protective housing 7 is installed on the moving part 6. The drive device 8 is installed inside the protective housing 7, and its output shaft is connected to the cutting blade 9. The drive component 5 can be composed of a motor, a lead screw, and a round rod. The round rod is installed inside the processing table 10, and the lead screw is installed on the output shaft of the drive component 5. The moving part 6 is threaded onto the surface of the lead screw and movably sleeved onto the surface of the round rod. The drive component 5 can also be driven by components such as a cylinder. A rectangular slot is provided on the processing table 10, and the cutting blade 9 moves in the rectangular slot to cut rows of bar stock.
[0022] The adjustment assembly includes a guide portion 11, an elastic element 15, and a clamping portion 16. The guide portion 11 is installed in the inner cavity of the processing table 10. The fixed end of the elastic element 15 is connected to the moving portion 6, and the movable end moves along the surface of the guide portion 11. The clamping portion 16 is connected to the elastic element 15 and moves with the elastic element 15. The elastic element 15 consists of a spring, a movable rod, and a rotating wheel. The two ends of the spring are connected to the clamping portion 16 and the rotating wheel, respectively, and the two ends of the movable rod are connected to the rotating wheel and the clamping portion 16, respectively.
[0023] The guide section 11 is provided with an inclined surface 12, a horizontal surface 13, and a horizontal surface 14. The drive assembly drives the moving part 6 to move along the guide section 11, and the elastic element 15 moves along the inclined surface 12 and the horizontal surface 13. When the elastic element 15 moves to the horizontal surface 14, the grinding mechanism grinds the cutting blade 9. When the cutting blade 9 cuts the rows of bars along the guide section 11, it will first move along the surface of the inclined surface 12. As more and more bars are cut by the cutting blade 9, the flexible conical wheel 17 will fit closer to the cutting blade 9, and the contact area between the flexible conical wheel 17 and the cutting blade 9 will become larger and larger. At this time, due to the increase in friction between the flexible conical wheel 17 and the cutting blade 9, the load on the cutting blade 9 will be increased within a very small range. Therefore, adaptive contact cooling is adopted.
[0024] The cooling assembly includes a flexible conical wheel 17, a second drive device 18, a T-shaped rod 19, a hollow rod 20, and an elastic support 31. The second drive device 18 is installed at the movable end of the adjustment assembly. The output shaft of the second drive device 18 is connected to the T-shaped rod 19. The inner wall of the hollow rod 20 is connected to the T-shaped rod 19. The outer wall of the hollow rod 20 is connected to the fixed end of the elastic support 31. The flexible conical wheel 17 is installed on the outer side of the hollow rod 20. The movable end of the elastic support 31 contacts the flexible conical wheel 17. The flexible conical wheel 17 can be made of materials such as flexible graphite and thermally conductive silicone rubber. Those skilled in the art can freely choose to activate the drive device 18 to rotate the T-shaped rod 19, which in turn rotates the hollow rod 20, thereby driving the flexible conical wheel 17 to rotate through the hollow rod 20. This causes the flexible conical wheel 17 and the cutting blade 9 to rotate synchronously, thus significantly reducing the friction between the flexible conical wheel 17 and the cutting blade 9. The flexible conical wheel 17 is supported by the elastic support member 31, thus enabling the flexible conical wheel 17 to be supported. Furthermore, the elastic support member 31 is already at its maximum length in the default state and cannot be extended further.
[0025] The delivery assembly includes an input pipe 21, an output pipe 30, and a cooling device 32. The output pipe 30 is sleeved on the end of the hollow rod 20 near the T-shaped rod 19 and communicates with the inner cavity of the hollow rod 20. The input pipe 21 communicates with the end of the hollow rod 20 away from the T-shaped rod 19. Both the input pipe 21 and the output pipe 30 are connected to a liquid delivery device 22. The cooling device 32 is installed on the processing table 10. The input pipe 21 and the output pipe 30 are connected to the cooling device 32 through the liquid delivery device 22, so that the coolant circulates in the inner cavity of the hollow rod 20. The liquid delivery device 22 delivers the coolant from the cooling device 32 to the input pipe 21 and into the hollow rod 20. Then, the coolant is delivered to the flexible conical wheel 17 through the hollow rod 20. The flexible conical wheel 17 cools the cutting tool 9 by contacting the cutting tool 9.
[0026] Example 2, as Figures 4-8 As shown, the present invention proposes a bar cutting device for milling cutters. Compared with Embodiment 1, the grinding mechanism of this embodiment includes an elastic element 23, a grinding plate 24, a pull rope 25, and a trigger assembly. The two ends of the elastic element 23 are respectively connected to the moving part 6 and the grinding plate 24; the two ends of the pull rope 25 are respectively connected to the clamping part 16 and the grinding plate 24; the trigger assembly is installed in the moving part 6; when it is necessary to grind the cutting blade 9, the elastic element 15 moves to the horizontal plane 14. At this time, the clamping part 16 drives the flexible conical wheel 17 to move the longest distance in the direction of the cutting blade 9, and the locking block 2... 9 moves to the latching plate 27 and latches with it, thereby releasing the pull rope 25. The elasticity of the elastic element 23 causes the grinding plate 24 to move towards the cutting blade 9, so that the grinding plate 24 and the cutting blade 9 are in contact. Then the driving component 5 drives the cutting blade 9 to reset. At this time, the cutting blade 9 continues to rotate. Then the edge of the cutting blade 9 is ground by the grinding plate 24. And by the latching of the latching block 29 and the latching plate 27, the grinding plate 24 cannot be reset at this time. Thus, the cutting blade 9 is ground during the reset process, saving time and improving processing efficiency.
[0027] The triggering assembly includes an elastic element 26, a snap-fit plate 27, a push rod 28, and a snap-fit block 29. The two ends of the elastic element 26 are connected to the moving part 6 and the push rod 28, respectively. The snap-fit plate 27 is mounted on the push rod 28. The snap-fit block 29 is mounted on the clamping part 16. When the clamping part 16 drives the snap-fit block 29 to snap-fit with the snap-fit plate 27, the grinding plate 24 contacts the cutting blade 9. When the push rod 28 returns to its original position and contacts the inner wall of the machining table 10, the push rod 28 is pushed by the machining table 10, thereby causing the snap-fit plate 27 to separate from the snap-fit block 29. Subsequently, the elasticity of the elastic element 15 drives the clamping part 16 to return to its original position.
[0028] The elastic support 31 is composed of elastic element four and contact block. The two ends of elastic element four are connected to hollow rod 20 and contact block respectively. Elastic element four, elastic element two 23 and elastic element three 26 are all composed of spring two and telescopic rod.
[0029] In summary, in this invention, long bars are placed in rows in the clamping seat 2, and then the bars are limited by the clamping plate 3 and the clamping member 4. Then, the support base 1 drives one of the clamping seats 2 to move towards the processing table 10, thereby enabling the bars to be transported towards the processing table 10 intermittently.
[0030] Next, the drive device 8 is started to drive the cutting blade 9 to rotate. Then, the drive component 5 drives the cutting blade 9 to move along the drive component 5 to cut the rows of bar stock. At this time, the liquid delivery device 22 is started to deliver the coolant in the cooling device 32 to the input pipe 21, then into the hollow rod 20, and then into the flexible conical wheel 17, so that the flexible conical wheel 17 contacts the cutting blade 9 to cool the cutting blade 9. Then the coolant is discharged from the output pipe 30 into the cooling device 32, and the cooling device 32 cools the material again.
[0031] As the cutting blade 9 moves along the drive component 5, the elastic element 15 moves along the surface of the inclined surface 12, thereby causing the clamping part 16 to drive the flexible conical wheel 17 to move toward the cutting blade 9. After the flexible conical wheel 17 is squeezed, the contact area between it and the cutting blade 9 increases, thereby increasing the contact area between the flexible conical wheel 17 and the cutting blade 9 as the cutting time of the cutting blade 9 increases, thereby improving the cooling effect.
[0032] When the edge of the cutting blade 9 needs to be ground, the elastic element 15 moves to the horizontal plane 14. When the clamping part 16 drives the flexible conical wheel 17 to move to the farthest distance in the direction of the cutting blade 9, the pull rope 25 is released, and the locking block 29 engages with the locking plate 27. At this time, the elasticity of the elastic element 23 causes the grinding plate 24 to fit against the cutting blade 9. Then the driving part 5 drives the cutting blade 9 to reset. At this time, the cutting blade 9 is ground during the reset process because of the fit between the grinding plate 24 and the cutting blade 9. When the push rod 28 contacts the inner wall of the processing table 10, the push rod 28 is pushed to separate the locking plate 27 and the locking block 29, thereby resetting the clamping part 16.
[0033] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.
Claims
1. A bar cutting device for milling, comprising a support base (1) and a positioning mechanism, wherein the positioning mechanism is mounted on the support base (1) and is used for positioning the bar; characterized in that, Also includes: A processing table (10) is mounted on the side of a support base (1); A cooling mechanism is installed inside the processing table (10); Cutting blade (9), which is installed in the cooling mechanism and is used for bar stock machining; A grinding mechanism, which is mounted on a cooling mechanism, is used for grinding the cutting blade (9); The cooling mechanism includes a drive assembly, a cooling assembly, a conveying assembly, an adjusting assembly, and a moving part (6); the drive assembly is installed inside the processing table (10), the moving part (6) is installed on the drive assembly and moves along the drive assembly, the cutting blade (9) is installed on the moving part (6) and cuts the bar stock as the moving part (6) moves; the adjusting assembly is installed on the moving part (6) and is used to adjust the contact force between the cooling assembly and the cutting blade (9) as the moving part (6) moves; the cooling assembly is installed on the adjusting assembly and is used to contact the cutting blade (9) for cooling and reducing temperature; the drive assembly drives the cutting blade (9) to move and cut the bar stock, the cooling assembly contacts the cutting blade (9) to reduce the temperature of the cutting blade (9), and the contact force between the cooling assembly and the cutting blade (9) is adjusted by the adjusting assembly.
2. The bar cutting device for milling according to claim 1, characterized in that, The drive assembly includes a drive component (5), a protective shell (7), and a drive device (8); the drive component (5) is installed inside the machining table (10), and the moving part (6) is connected to the movable end of the drive component (5); the protective shell (7) is installed on the moving part (6); the drive device (8) is installed inside the protective shell (7), and its output shaft is connected to the cutting blade (9).
3. The bar cutting device for milling according to claim 1, characterized in that, The adjustment assembly includes a guide (11), an elastic element (15), and a clamping part (16); the guide (11) is installed in the inner cavity of the processing table (10); the fixed end of the elastic element (15) is connected to the moving part (6), and the movable end moves along the surface of the guide (11); the clamping part (16) is connected to the elastic element (15) and moves with the elastic element (15).
4. The bar cutting device for milling according to claim 3, characterized in that, The guide section (11) is provided with an inclined surface (12), a horizontal surface one (13) and a horizontal surface two (14); the drive assembly drives the moving part (6) to move along the guide section (11), and the elastic element one (15) moves along the inclined surface (12) and the horizontal surface one (13); the elastic element one (15) moves to the horizontal surface two (14), and the grinding mechanism grinds the cutting blade (9).
5. The bar cutting device for milling according to claim 1, characterized in that, The cooling assembly includes a flexible conical wheel (17), a second drive device (18), a T-shaped rod (19), a hollow rod (20), and an elastic support (31); the second drive device (18) is installed on the movable end of the adjustment assembly; the output shaft of the second drive device (18) is connected to the T-shaped rod (19); the inner wall of the hollow rod (20) is connected to the T-shaped rod (19); the outer wall of the hollow rod (20) is connected to the fixed end of the elastic support (31); the flexible conical wheel (17) is installed on the outer side of the hollow rod (20); the movable end of the elastic support (31) is in contact with the flexible conical wheel (17).
6. The bar cutting device for milling according to claim 5, characterized in that, The delivery assembly includes an input pipe (21), an output pipe (30), and a cooling device (32); the output pipe (30) is sleeved on the end of the hollow rod (20) near the T-shaped rod (19) and communicates with the inner cavity of the hollow rod (20); the input pipe (21) communicates with the end of the hollow rod (20) away from the T-shaped rod (19); both the input pipe (21) and the output pipe (30) are connected to a liquid delivery device (22); the cooling device (32) is installed on the processing table (10); the input pipe (21) and the output pipe (30) are connected to the cooling device (32) through the liquid delivery device (22) so that the coolant circulates in the inner cavity of the hollow rod (20).
7. The bar cutting device for milling according to claim 3, characterized in that, The polishing mechanism includes an elastic element 2 (23), a polishing plate (24), a pull rope (25), and a trigger assembly; the two ends of the elastic element 2 (23) are connected to the moving part (6) and the polishing plate (24) respectively; the two ends of the pull rope (25) are connected to the clamping part (16) and the polishing plate (24) respectively; the trigger assembly is installed in the moving part (6).
8. The bar cutting device for milling according to claim 7, characterized in that, The triggering assembly includes an elastic element three (26), a snap-fit plate (27), a push rod (28), and a snap-fit block (29); the two ends of the elastic element three (26) are connected to the moving part (6) and the push rod (28) respectively; the snap-fit plate (27) is installed on the push rod (28); the snap-fit block (29) is installed on the clamping part (16); when the clamping part (16) drives the snap-fit block (29) to snap-fit with the snap-fit plate (27), the grinding plate (24) contacts the cutting blade (9).