Multi-stage inner-cooling deep hole milling cutter disc capable of adjusting cutting depth

Abstract

The invention relates to the technical field of milling cutter discs, and discloses a cutting depth adjustable multistage inner-cooling deep hole milling cutter disc which comprises a milling cutter disc body, a plurality of mounting seats are fixedly connected to the edge of the milling cutter disc body, mounting grooves are formed in one sides of the mounting seats, cutter bodies are slidably connected into the mounting grooves, and the cutter bodies are arranged in the mounting grooves. A cooling groove is formed in the side, close to the mounting groove, of the cutter body, a cooling cavity is formed in the cutter body, a plurality of drainage holes B are formed in the side, away from the mounting groove, of the cutter body, a flow guide frame is fixedly connected to the side, away from the mounting groove, of the cutter body, and a plurality of evenly-distributed flow dividing openings are formed in the bottom of the flow guide frame. According to the multi-stage inner-cooling deep-hole milling cutter capable of adjusting the cutting depth, the contact surface of the cutter body and a workpiece is cooled internally and externally at the same time, the friction force between the cutter body and the workpiece is reduced through cooling liquid, the protectiveness of the cutter body is improved, and the situation that when a traditional device conducts cooling work, the cutter body is damaged is avoided. And the cooling efficiency of the contact part of the cutter body and the workpiece is low.

Description

Technical Field

[0001] The present invention relates to the technical field of milling cutters, and in particular to a multi-stage internal cooling deep-hole milling cutter with adjustable cutting depth. Background Technique

[0002] With the development of society and the improvement of the precision requirements for various workpieces, milling machines specialized for processing various surfaces have been manufactured. A milling machine is a machine tool that mills workpieces through milling cutters. In addition to milling planes, grooves, gear teeth, threads, and spline shafts, milling machines can also process relatively complex profiles, with higher efficiency than planers and higher machining accuracy, and are widely used in the machinery manufacturing and repair departments; The milling cutter is one of the main structures in the milling machine, mainly used for plane milling, step machining, groove milling, and forming machining of complex contours. It mainly consists of a tool holder (the body of the milling cutter), a tool body, and a cooling channel. By installing the tool body on the tool holder and using the tool body rotating at high speed to mill the workpiece. During the milling process, coolant or water is transported through the cooling channel to complete the cooling work of the tool body. With the continuous improvement of the milling cutter, milling cutter types such as multi-stage internal cooling deep-hole milling cutters have emerged. This type of milling cutter improves the cooling effect during milling through multi-stage internal cooling channels. At the same time, this type of milling cutter is usually disc-shaped and is equipped with multiple indexable inserts, suitable for deep-hole machining; When the existing milling cutter is in the milling process, the coolant is usually directly injected onto the surface of the milling cutter body, and then the excess coolant is discharged through the discharge holes provided on the milling cutter body, and the coolant is used to take away the temperature on the tool body to complete the cooling work. However, in actual use, when the tool body is in the milling process, its bottom is the main part in contact with the workpiece, so the temperature of this part is relatively higher than other places. And the traditional milling cutter usually cools the whole milling cutter evenly, resulting in a relatively low cooling efficiency at the part where the bottom of the tool body contacts the workpiece. For this reason, we propose a multi-stage internal cooling deep-hole milling cutter with adjustable cutting depth. Summary of the Invention

[0003] The purpose of the present invention is to provide a multi-stage internal cooling deep-hole milling cutter with adjustable cutting depth to solve the problems raised in the above background technique.

[0004] To achieve the above object, the present invention provides the following technical solution: A multi-stage internal cooling deep-hole milling cutter head with adjustable cutting depth, including a milling cutter head body. A plurality of mounting seats are fixedly connected to the edge of the milling cutter head body. An installation groove is opened on one side of the mounting seat. A cutter body is slidably connected in each installation groove. A cooling groove is opened on one side of the cutter body close to the installation groove. A cooling cavity is opened in the cutter body. The cooling cavity is communicated with the cooling groove through a hole. A plurality of drain holes B are opened on the side of the cutter body away from the installation groove. The drain holes B are all communicated with the cooling cavity; A diversion frame is fixedly connected to the side of the cutter body away from the installation groove. The drain holes B are all located in the diversion frame. A plurality of uniformly distributed diversion openings are opened at the bottom of the diversion frame.

[0005] Preferably, limiting seats are fixedly connected to both ends of the diversion frame. An installation rod is rotatably connected between the two limiting seats. Swing plates corresponding to the number of diversion openings are fixedly connected to the installation rod. The bottoms of the swing plates are all located in the diversion openings at their corresponding positions. A baffle is fixedly connected between the tops of the swing plates. Clock springs are fixedly connected to the joints of both ends of the installation rod and the limiting seats on the same side.

[0006] Preferably, a drain pipe communicated with the cooling groove is fixedly connected to the inner top wall of the cooling cavity. A plurality of water outlet holes are opened on the side of the drain pipe.

[0007] Preferably, a communication hole is opened on the milling cutter head body. A communicating installation hole is opened between each installation groove and the communication hole.

[0008] Preferably, a water storage device is fixedly connected in the communication hole. A plurality of mutually communicated water guide pipes are fixedly connected to the outer wall of the water storage device. The number of the water guide pipes is the same as the number of the mounting seats. The water guide pipes are all located in the installation holes at their corresponding positions. One end of the water guide pipe away from the water storage device is communicated with the cooling groove of the cutter body on the same side through the installation hole.

[0009] Preferably, a chute A is opened in the installation groove. A chute B is also opened in the installation groove. The chute B is located below the chute A.

[0010] Preferably, a plurality of drain holes A communicated with the cooling groove are opened on the side of the cutter body away from the milling cutter head body. A communication port is opened on the cutter body. A rack is fixedly connected to the side of the cutter body close to the installation groove. The rack is located in the chute B.

[0011] Preferably, a gear is rotatably connected in the installation groove, the gear meshes with the rack, the gear is aligned with the communication port on the tool body, a hexagonal groove is formed on one side of the gear away from the inner wall of the installation groove, a hexagonal rod is inserted into the hexagonal groove on the gear, the hexagonal rod is located in the communication port of the tool body, a knob is fixedly connected to one end of the hexagonal rod away from the gear, an indicator is arranged on the knob, and a clamping plate is fixedly connected to one side of the knob close to the tool body.

[0012] Preferably, a hollow installation disc is slidably connected in the communication port, a plurality of uniformly distributed scale grooves are formed on the edge of the installation disc, a limiting frame corresponding to the number of scale grooves is fixedly connected to one side of the installation disc close to the knob, and a bearing is embedded in the installation disc, and the bearing is sleeved on the hexagonal rod.

[0013] Preferably, a fastening seat is slidably connected in the chute A, and fastening bolts are threadedly connected to the tool body, and one end of the fastening bolt is threadedly connected to the fastening seat.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: When the coolant enters the cooling groove in the present invention, during the process of cooling the tool body, part of the coolant will enter the cooling cavity through the drain pipe. At this time, by gathering the coolant in the cooling cavity, the bottom of the tool body is cooled. As the coolant continuously enters the cooling cavity, the liquid level in the cooling cavity rises continuously, and finally it is discharged through the drain hole B. At this time, the coolant discharged through the drain hole B flows down along the tool body, thereby reducing the cooling work between the side of the tool body and the contact surface. At this time, the tool body and the contact surface of the workpiece are cooled simultaneously inside and outside, and the friction between the tool body and the workpiece is reduced by the coolant, improving the protection of the tool body and avoiding the problem that the cooling efficiency of the contact part between the tool body and the workpiece is low in the traditional device during the cooling work; When the coolant is discharged through the drain hole B in the present invention, the side wall of the diversion frame blocks the discharged coolant and makes it flow to the bottom of the diversion frame along the inclined side wall of the diversion frame. At this time, through a plurality of diversion ports at the bottom of the diversion frame, the coolant gathered in the diversion frame can be evenly spread over the lower half side wall of the tool body and flow down along the tool body, avoiding the problem that the coolant cannot be evenly spread over the side of the tool body due to surface tension, which affects the cooling work of the tool body, and further improving the cooling work of the side of the tool body and the contact surface of the workpiece of the device; When the coolant enters the diversion frame through the drain hole B in the present invention, the coolant will be sprayed on the baffle plate, thereby driving the mounting rod to rotate. When the conveying efficiency of the coolant becomes low or the cooling work stops, at this time, the clockwork drives the mounting rod to rotate back. At this time, the swing plate is driven by the mounting rod to move along the diversion port. At this time, the swing plate can be used to scrape the inner wall of the diversion port, avoiding the problem that the inner wall of the diversion port is scaled due to the deposition of some substances in the coolant, resulting in the reduction of the diameter of some diversion ports and affecting the uniform discharge of the coolant through the diversion port. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic cross-sectional structure diagram of the milling cutter head body of the present invention; Figure 3 is a schematic cross-sectional structure diagram of the mounting seat of the present invention; Figure 4 is a schematic diagram of the structure of the cutter body on the side away from the mounting groove of the present invention; Figure 5 is a schematic diagram of the structure of the cutter body on the side close to the mounting groove of the present invention; Figure 6 is a schematic cross-sectional structure diagram of the cutter body of the present invention; Figure 7 is a schematic diagram of the diversion frame structure of the present invention; Figure 8 is a schematic diagram of the swing plate and its connecting components of the present invention; Figure 9 is a schematic diagram of the docking structure of the gear and the hexagonal rod of the present invention; Figure 10 is a schematic diagram of the knob structure of the present invention; Figure 11 is a schematic diagram of the mounting plate structure of the present invention; Figure 12 is a schematic cross-sectional structure diagram of the fastening seat of the present invention; Figure 13 of the present invention Figure 8 is an enlarged schematic diagram of the area A shown; In the figure: 1. Milling cutter head body; 11. Mounting seat; 12. Mounting groove; 121. Slide groove A; 122. Slide groove B; 13. Communication hole; 14. Mounting hole; 2. Water storage device; 21. Water guide pipe; 3. Cutter body; 31. Cooling groove; 32. Drain hole A; 33. Cooling cavity; 34. Drain hole B; 35. Communication port; 36. Rack; 4. Flow guide frame; 41. Diverging port; 5. Limit seat; 51. Mounting rod; 52. Swing plate; 53. Baffle plate; 54. Hairspring; 6. Drain pipe; 61. Water outlet hole; 7. Gear; 71. Hexagonal rod; 72. Knob; 73. Clamping plate; 8. Mounting disc; 81. Scale groove; 82. Limit frame; 83. Bearing; 9. Fastening seat; 91. Fastening bolt. Detailed implementation mode

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0017] Please refer to Figures 1-13, the present invention provides a technical solution: a multi-stage internal cooling deep hole milling cutter head with adjustable cutting depth, which includes a milling cutter head body 1. A plurality of mounting seats 11 are fixedly connected to the edge of the milling cutter head body 1. An installation groove 12 is opened on one side of the mounting seat 11. A communication hole 13 is opened on the milling cutter head body 1. An installation hole 14 communicating with each other is opened between each installation groove 12 and the communication hole 13. A cutter body 3 is slidably connected in each installation groove 12. A cooling groove 31 is opened on the side of the cutter body 3 close to the installation groove 12. A cooling cavity 33 is opened in the cutter body 3. The cooling cavity 33 and the cooling groove 31 are communicated through a hole. A plurality of drain holes A 32 communicating with the cooling groove 31 are opened on the side of the cutter body 3 away from the milling cutter head body 1. A plurality of drain holes B 34 are opened on the side of the cutter body 3 away from the installation groove 12. The drain holes B 34 are all communicated with the cooling cavity 33. A drain pipe 6 communicating with the cooling groove 31 is fixedly connected to the inner top wall of the cooling cavity 33. The drain pipe 6 is located in the hole between the cooling cavity 33 and the cooling groove 31. A plurality of water outlet holes 61 are opened on the side surface of the drain pipe 6. By arranging a plurality of water outlet holes 61 on the side surface of the drain pipe 6, the impact force when the coolant is discharged from the drain pipe 6 can be effectively reduced, avoiding the problem that the impact force when the coolant is discharged from the drain pipe 6 is too large, resulting in damage to the cutter body 3. At the same time, it can also effectively reduce the number of bubbles generated when the coolant is discharged from the drain pipe 6 and contacts the coolant in the cooling cavity 33. A water storage device 2 is fixedly connected in the communication hole 13. A plurality of mutually communicating water guide pipes 21 are fixedly connected to the outer wall of the water storage device 2. The number of the water guide pipes 21 is the same as the number of the mounting seats 11. The water guide pipes 21 are all located in the installation holes 14 at their corresponding positions. One end of the water guide pipe 21 away from the water storage device 2 is communicated with the cooling groove 31 of the cutter body 3 on the same side through the installation hole 14. The cooling groove 31 is a vertically long strip-shaped groove structure. Through this structural design, while adjusting the height of the cutter body 3, it can be ensured that the cooling groove 31 is always communicated with the water guide pipe 21, so that the coolant can always enter the cooling groove 31.

[0018] Further, install the milling cutter head body 1 at a specified position on the milling machine. Then, arrange the workpieces. After that, drive the milling cutter head body 1 to rotate through the driving mechanism on the milling machine. At this time, the high-speed rotating cutter body 3 can be used to mill the workpieces. During this process, the coolant will enter the water storage device 2 through the communication holes 13. When the coolant in the water storage device 2 reaches a certain amount, it will be transported to the cooling grooves 31 of the cutter body 3 through the water guide pipe 21. At this time, the coolant will fill the cooling grooves 31 to preliminarily cool the cutter body 3. During this process, most of the coolant in the cooling grooves 31 will be discharged through the drain holes A32. At this time, the excess coolant in the cooling grooves 31 is discharged through the drain holes A32, which can not only make a certain space in the cooling grooves 31 to receive the subsequent coolant, but also use the ejected coolant to clean the chips generated on the surface of the workpieces due to milling. A small part of the coolant in the cooling grooves 31 will enter the cooling cavity 33 through the drain pipe 6. At this time, the coolant in the cooling cavity 33 can cool the bottom of the cutter body 3. As the coolant in the cooling grooves 31 continuously enters the cooling cavity 33, the liquid level of the coolant in the cooling cavity 33 will rise. When the liquid level of the coolant reaches the drain hole B34, it can be discharged through the drain hole B34. At this time, the discharged coolant flows down along the cutter body 3 to cool the surface of the cutter body 3 in contact with the workpiece on the side, completing the simultaneous cooling of the inner and outer surfaces of the cutter body 3 and improving the cooling efficiency of the contact part between the cutter body 3 and the workpiece.

[0019] Combined with the attached Figure 4 , Figure 7 , Figure 8 and Figure 13As shown in the figure, a diversion frame 4 is fixedly connected to the side of the tool body 3 away from the installation groove 12. The diversion frame 4 is divided into two parts, a side surface and a bottom surface. The side surface of the diversion frame 4 is an inclined structure, and its bottom is a horizontal structure. The drain holes B34 are all located within the diversion frame 4. A number of evenly distributed diversion openings 41 are formed in the bottom of the diversion frame 4. When the coolant is injected into the cooling groove 31, a part of the coolant in the cooling groove 31 will be pushed by the subsequent coolant entering the cooling groove 31 through the drain pipe 6 into the cooling cavity 33. At this time, the coolant in the cooling cavity 33 continuously increases until the coolant level reaches the drain holes B34 and enters the diversion frame 4. At this time, the subsequent coolant entering the cooling groove 31 will continue to be injected into the cooling cavity 33 and provide a driving thrust to the coolant in the cooling cavity 33. Through this thrust, the coolant is driven to flow at a high speed. At this time, due to the small gap of the diversion openings 41, the speed at which the coolant in the diversion frame 4 is discharged from the diversion openings 41 is much lower than the speed at which the coolant enters the diversion frame 4 from the cooling cavity 33. This causes the coolant to be blocked by the bottom of the diversion frame 4 when passing through the diversion openings 41. At this time, part of the pressure energy is converted into kinetic energy, thereby increasing the flow rate. With the thrust provided when the subsequent coolant enters the cooling cavity 33, the coolant will be ejected from the diversion openings 41 in a jet shape, and the coolant is evenly sprayed and covered on the side of the tool body 3 through each diversion opening 41, which can avoid the problem that the coolant discharged from the diversion openings 41 is thrown away due to the centrifugal force generated by the high-speed rotation of the milling cutter head body 1. After the coolant is discharged through the drain holes B34, it will impact the side wall of the diversion frame 4 and flow to the bottom of the diversion frame 4 through the inclined side wall. Since the side wall of the diversion frame 4 is an inclined structure, it can effectively reduce the impact force on the diversion frame 4 when the coolant is discharged from the drain holes B34, and improve the stability and protection of the diversion frame 4. Water baffle plates are provided at both ends of the diversion frame 4. Through these water baffle plates, the problem that the coolant in the diversion frame 4 is thrown out through the inner walls at both ends of the diversion frame 4 when the milling cutter head body 1 rotates at a high speed can be avoided. Limit seats 5 are fixedly connected to both ends of the diversion frame 4. An installation rod 51 is rotatably connected between the two limit seats 5. Swing plates 52 corresponding to the number of the diversion openings 41 are fixedly connected to the installation rod 51. The bottoms of the swing plates 52 are all located within the diversion openings 41 at their corresponding positions. A baffle plate 53 is fixedly connected between the tops of the swing plates 52. Spring strips 54 are fixedly connected to the connections between both ends of the installation rod 51 and the limit seats 5 on the same side.

[0020] Furthermore, when the coolant in the cooling chamber 33 is discharged through the drain hole B34, it can impact the side wall of the guide frame 4 and the baffle 53. At this time, the impact force when the coolant is discharged will drive the baffle 53 and the mounting rod 51 to rotate. When the mounting rod 51 rotates, it can drive the clockwork spring 54 to tighten. After the coolant is blocked by the side wall of the guide frame 4 and the baffle 53, it will flow to the bottom of the guide frame 4 and be dispersed through the diversion openings 41, so that it evenly covers the side surface of the tool body 3, making the cooling effect of the coolant on the side wall of the tool body 3 more uniform. Since the cooling liquid used in the milling cutter head body 1 is generally composed of water, cutting oil, and other additives, and contains some minerals and chemical substances, when the coolant flows through the diversion openings 41, due to the change in the coolant flow rate, temperature fluctuations, and the catalytic action of the metal surface of the guide frame 4, the components of these minerals and chemical substances will deposit on the inner wall of the holes, forming a layer of scale. When the conveying efficiency of the coolant decreases and the conveying stops, the impact force of the coolant on the baffle 53 decreases. At this time, the clockwork spring 54 starts to rebound, driving the mounting rod 51 to rotate in the reverse direction. At this time, the mounting rod 51 drives the swing plate 52 to move along the diversion openings 41. At this time, the inner wall of the diversion openings 41 is scraped by the swing plate 52, cleaning the scale generated on the inner wall of the diversion openings 41 due to the deposition of substances in the coolant, avoiding the problem that due to the deposition of scale on the inner wall of some diversion openings 41, the aperture of some diversion openings 41 becomes smaller, resulting in a farther spraying distance when the coolant flows out of these diversion openings 41, so that the coolant cannot cover the side surface of the tool body 3 and affecting the cooling effect on the side surface of the tool body 3.

[0021] Combined with the attached Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 9 、 Figure 10 and Figure 11As shown in the figure, a chute A121 is provided in the installation groove 12, and a chute B122 is also provided in the installation groove 12. The chute B122 is located below the chute A121. A communication port 35 is provided on the tool body 3. A rack 36 is fixedly connected to the side of the tool body 3 close to the installation groove 12. The rack 36 is located in the chute B122. A gear 7 is rotatably connected to the installation groove 12 in an embedded manner. The gear 7 meshes with the rack 36. The gear 7 is aligned with the communication port 35 on the tool body 3. A hexagonal groove is provided on the side of the gear 7 away from the inner wall of the installation groove 12. A hexagonal rod 71 is inserted into the hexagonal groove on the gear 7. The hexagonal rod 71 is located in the communication port 35 of the tool body 3. One end of the hexagonal rod 71 away from the gear 7 is fixedly connected to a knob 72. An indicator is provided on the knob 72. A clamping plate 73 is fixedly connected to the side of the knob 72 close to the tool body 3. A hollow installation disc 8 is slidably connected in the communication port 35. A number of uniformly distributed scale grooves 81 are provided on the edge of the installation disc 8. A limiting frame 82 corresponding to the number of the scale grooves 81 is fixedly connected to the side of the installation disc 8 close to the knob 72. A bearing 83 is embedded in the installation disc 8. The bearing 83 is sleeved on the hexagonal rod 71. Through the design of the bearing 83, the installation disc 8 can be fixed without affecting the rotation of the hexagonal rod 71, which is convenient for determining the rotation angle of the gear 7 by the cooperation of the indicator on the knob 72 and the scale grooves 81 on the installation disc 8, facilitating the subsequent depth adjustment work of other tool bodies 3 and making the lifting heights of the tool bodies 3 consistent.

[0022] Further, when installing the tool body 3, the tool body 3 is clamped in the installation groove 12, and it is ensured that the rack 36 is located in the chute B122. At this time, the rack 36 meshes with the gear 7. Then, the hexagonal rod 71 is inserted into the hexagonal groove of the gear 7 through the communication port 35. Then, the knob 72 is manually rotated to drive the gear 7 to rotate. During the rotation of the gear 7, it can cooperate with the rack 36 to drive the tool body 3 to lift and lower, completing the height adjustment of the tool body 3 and thus adjusting the cutting depth of the tool body 3. When rotating the knob 72, when the clamping plate 73 is stuck into the limiting frame 82, it will be slightly blocked, ensuring that the rotation angle of the knob 72 is fixed. Then, through the position of the scale groove 81 on the installation disc 8 indicated by the indicator on the knob 72, the current rotation angle of the gear 7 can be determined. At this time, according to this angle, the gears 7 on other mounting seats 11 are rotated, so that the lifting heights of the tool bodies 3 can be made consistent, improving the milling accuracy of the workpiece. The limiting frame 82 is composed of metal sheets and has a certain elasticity. When rotating the knob 72, a certain force can be applied to push the side of the clamping plate 73 against the limiting frame 82 and make the clamping plate 73 smoothly stuck into the limiting frame 82.

[0023] Combined with the attached Figure 5 and Figure 12As shown, a fastening seat 9 is slidably connected in the chute A121. Fastening bolts 91 are threadedly connected to the cutter body 3. One end of each fastening bolt 91 is threadedly connected to the fastening seat 9. A retaining bar is provided at the opening of the chute A121. When the fastening bolts 91 are tightened, the fastening seat 9 will be driven to approach the cutter body 3. At this time, the fastening seat 9 will be closely attached to the retaining bar. At this time, through the cooperation of the fastening seat 9 and the fastening bolts 91, the fixing and limiting work of the cutter body 3 can be completed.

[0024] Further, after adjusting the height of the cutter body 3, rotate the fastening bolts 91 to complete the fastening and limiting work of the cutter body 3. When it is necessary to re-adjust the height of the cutter body 3, rotate the fastening bolts 91 in the reverse direction to loosen the fastening seat 9 from the cutter body 3. At this time, the height of the cutter body 3 can be re-adjusted. After the adjustment is completed, tighten the fastening bolts 91 again to continue fixing the cutter body 3 for subsequent milling work.

[0025] Working principle: First, install the milling cutter head body 1 at the designated position on the milling machine, and then install the cutter body 3. When installing the cutter body 3, place the cutter body 3 in the installation groove 12 and ensure that the rack 36 is located in the chute B122. At this time, the rack 36 meshes with the gear 7. Then insert the hexagonal rod 71 into the hexagonal groove of the gear 7 through the communication port 35. Then manually rotate the knob 72 to drive the gear 7 to rotate. During the rotation of the gear 7, it can cooperate with the rack 36 to drive the cutter body 3 to move up and down to complete the height adjustment of the cutter body 3, thereby adjusting the cutting depth of the cutter body 3. When rotating the knob 72, when the clamping plate 73 is inserted into the limiting frame 82, it will be slightly blocked to ensure that the rotation angle of the knob 72 is fixed. Then, according to the position of the scale groove 81 on the mounting plate 8 indicated by the indicator on the knob 72, the rotation angle of the current gear 7 can be determined. At this time, according to this angle, rotate the gears 7 on other mounting seats 11 to make the lifting heights of each cutter body 3 the same. Then rotate the fastening bolts 91 to complete the fastening and limiting work of the cutter body 3, and then prepare for milling work; When performing milling work, place the workpiece on the milling machine. At this time, drive the milling cutter head body 1 to rotate through the drive mechanism on the milling machine, and then use the cutter body 3 rotating at high speed to mill the workpiece; During the milling operation, the coolant will enter the water storage device 2 through the communication hole 13. When the coolant in the water storage device 2 reaches a certain amount, it will be transported to the cooling groove 31 of the tool body 3 through the water guide pipe 21. At this time, the coolant will fill the cooling groove 31 to preliminarily cool the tool body 3. During this process, most of the coolant in the cooling groove 31 will be discharged through the drain hole A32. At this time, the excess coolant in the cooling groove 31 is discharged through the drain hole A32, and a small part of the coolant in the cooling groove 31 will enter the cooling cavity 33 through the drain pipe 6. At this time, the coolant in the cooling cavity 33 can cool the bottom of the tool body 3. As the coolant in the cooling groove 31 continuously enters the cooling cavity 33, the liquid level of the coolant in the cooling cavity 33 will rise until the liquid level of the coolant reaches the drain hole B34, and then it can be discharged through the drain hole B34; When the coolant in the cooling cavity 33 is discharged through the drain hole B34, it can impact the side wall of the diversion frame 4 and the baffle 53. At this time, the impact force when the coolant is discharged will drive the baffle 53 and the mounting rod 51 to rotate. When the mounting rod 51 rotates, it can drive the clockwork spring 54 to tighten. After the coolant is blocked by the side wall of the diversion frame 4 and the baffle 53, it will flow to the bottom of the diversion frame 4 and be dispersed through the diversion port 41, so that the coolant is evenly spread over the side of the tool body 3, making the cooling effect of the coolant on the side wall of the tool body 3 more uniform. At this time, through the cooperation of the coolant outside the tool body 3 and the coolant inside the cooling cavity 33, the inner and outer sides of the lower half of the tool body 3 are cooled simultaneously. When the delivery efficiency of the coolant decreases and the delivery stops, the impact force of the coolant on the baffle 53 decreases. At this time, the clockwork spring 54 starts to rebound, driving the mounting rod 51 to rotate in the reverse direction. At this time, the mounting rod 51 drives the swing plate 52 to move along the diversion port 41. At this time, the swing plate 52 scrapes the inner wall of the diversion port 41 to clean the scale generated by the deposition of substances in the coolant on the inner wall of the diversion port 41, avoiding the problem that due to the deposition of scale on the inner wall of the diversion port 41, the aperture of some diversion ports 41 becomes smaller, resulting in the spraying distance of the coolant flowing out of this part of the diversion port 41 becoming farther, so that the coolant cannot cover the side of the tool body 3 and affecting the cooling effect on the side of the tool body 3.

[0026] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage internal cooling deep hole milling cutter with adjustable cutting depth, comprising a milling cutter body (1), a plurality of mounting seats (11) being fixedly connected to the edge of the milling cutter body (1), a mounting groove (12) being provided on one side of the mounting seat (11), characterized in that: The installation groove (12) is slidably connected with a blade body (3), a cooling groove (31) is provided on a side of the blade body (3) close to the installation groove (12), a cooling cavity (33) is provided in the blade body (3), the cooling cavity (33) is communicated with the cooling groove (31) via a hole, and a plurality of drainage holes B (34) are provided on a side of the blade body (3) away from the installation groove (12), the drainage holes B (34) are all communicated with the cooling cavity (33); A flow guide frame (4) is fixedly connected to a side of the blade body (3) away from the mounting groove (12); the drainage holes B (34) are all located in the flow guide frame (4); and a plurality of evenly distributed flow diversion ports (41) are provided at the bottom of the flow guide frame (4).

2. The multi-stage internal cooling deep hole milling cutter disc according to claim 1, characterized in that: Both ends of the flow guide frame (4) are fixedly connected to the limit seats (5), a mounting rod (51) is rotatably connected between the two limit seats (5), the mounting rod (51) is fixedly connected to swing plates (52) corresponding to the number of the diversion ports (41), the bottoms of the swing plates (52) are located in the diversion ports (41) at the corresponding positions, a baffle (53) is fixedly connected between the tops of the swing plates (52), and both ends of the mounting rod (51) are fixedly connected to springs (54) at the connection points with the limit seats (5) on the same side thereof.

3. The multi-stage internal cooling deep hole milling cutter disc according to claim 1, characterized in that: A drainage pipe (6) in communication with the cooling groove (31) is fixedly connected to the inner top wall of the cooling cavity (33), and a plurality of water outlet holes (61) are provided on the side of the drainage pipe (6).

4. The multi-stage internal cooling deep hole milling cutter disc according to claim 1, characterized in that: A communicating hole (13) is provided on the milling cutter disc body (1), and mutually communicating mounting holes (14) are provided between each mounting groove (12) and the communicating hole (13).

5. The multi-stage internal cooling deep hole milling cutter disc according to claim 4, characterized in that: A water reservoir (2) is fixedly connected inside the communication hole (13), and a plurality of water pipes (21) that are in communication with each other are fixedly connected to the outer wall of the water reservoir (2), the number of the water pipes (21) being the same as the number of the mounting seats (11), the water pipes (21) being located in the mounting holes (14) at corresponding positions thereof, and the ends of the water pipes (21) that are away from the water reservoir (2) being in communication with the cooling grooves (31) of the blade body (3) on the same side thereof through the mounting holes (14).

6. The multi-stage internal cooling deep hole milling cutter disc according to claim 1, characterized in that: A slide groove A (121) is provided in the installation groove (12), and a slide groove B (122) is also provided in the installation groove (12), wherein the slide groove B (122) is located below the slide groove A (121).

7. The multi-stage internal cooling deep hole milling cutter disc according to claim 6, characterized in that: A plurality of drainage holes A (32) which are interconnected with the cooling groove (31) are provided on a side of the cutter body (3) away from the milling cutter disc main body (1), a connecting port (35) is provided on the cutter body (3), and a rack (36) is fixedly connected to a side of the cutter body (3) close to the mounting groove (12), and the rack (36) is located in the slide groove B (122).

8. The multi-stage internal cooling deep hole milling cutter disc according to claim 7, characterized in that: A gear (7) is rotatably engaged in the mounting groove (12), the gear (7) and the rack (36) meshing with each other, the gear (7) being aligned with the connecting opening (35) on the blade body (3), a hexagonal groove being provided on the side of the gear (7) away from the inner wall of the mounting groove (12), a hexagonal rod (71) being inserted into the hexagonal groove on the gear (7), the hexagonal rod (71) being located in the connecting opening (35) of the blade body (3), a knob (72) being fixedly connected to one end of the hexagonal rod (71) away from the gear (7), an indicator being provided on the knob (72), and a clamping plate (73) being fixedly connected to the side of the knob (72) close to the blade body (3).

9. The multi-stage internal cooling deep hole milling cutter disc according to claim 8, characterized in that: A mounting plate (8) with a hollow structure is slidably connected in the communication port (35), a plurality of evenly distributed scale grooves (81) are provided on the edge of the mounting plate (8), a limit frame (82) corresponding in number to the scale grooves (81) is fixedly connected to a side of the mounting plate (8) close to the knob (72), a bearing (83) is embedded in the mounting plate (8), and the bearing (83) is sleeved on the hexagonal rod (71).

10. The multi-stage internal cooling deep hole milling cutter disc according to claim 6, characterized in that: A fastening seat (9) is slidably connected in the slide groove A (121), and a fastening bolt (91) is threadedly connected to the cutter body (3), and one end of the fastening bolt (91) is threadedly connected to the fastening seat (9).

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