A turbocharging assisted dust suction method for machining centers

Abstract

The application relates to a turbocharging auxiliary dust collection method for a machining center, which comprises the following steps: S1, providing a turbocharging auxiliary dust collection device; S2, when cutting is carried out, the main shaft of the machining center drives the rotation of a turbine body, and a negative pressure airflow is formed in the circumferential direction of the turbine body through a first groove and a fluid channel during the rotation; S3, the dust generated in the machining area of the machining center and the airflow first enter an air inlet area through a separator cover, and are guided and dispersed by guide ribs and turbulence ribs arranged in the circumferential direction of the separator cover before entering the first groove; S4, the airflow and the dust carried by the airflow after being adjusted by the guide ribs and the turbulence ribs enter the first groove and are distributed to each fluid channel, and the airflow is accelerated in the fluid channel through a converging flow channel structure; and S5, the airflow carrying the dust and the chips is sprayed to the outside space of the turbine body at an angle of 30 DEG to 55 DEG relative to the rotation axis when leaving the fluid channel through the acceleration of the airflow.

Description

Technical Field

[0001] This invention relates to the field of vacuuming device technology, specifically a turbocharged assisted vacuuming method for machining centers. Background Technology

[0002] In CNC machining centers, nested machining systems, and panel furniture processing equipment, cutting tools generate a large amount of dust and chips during high-speed rotation and cutting. This is especially true in processes such as panel cutting, contour milling, and grooving, where the dust particles are small and highly diffusive, easily spreading throughout the processing area and the surrounding environment. Existing processing equipment typically relies on the machine tool's own negative pressure suction system or an external centralized dust collection system to collect the dust. However, due to the distance between the suction port and the actual dust-generating area, and the complex airflow turbulence during processing, it is difficult to capture dust and chips in a timely and effective manner.

[0003] To address the aforementioned issues, existing technologies have proposed installing auxiliary turbines or airflow guiding devices near the cutting tool or tool holder, rotating synchronously with the spindle. These rotating components generate localized negative pressure or guided airflow at high speeds to enhance dust collection in the machining area. However, existing devices typically suffer from the following shortcomings: First, the turbine diameter is small and the blade structure is simple, resulting in limited negative pressure and airflow guiding capabilities, leading to minimal improvement in dust collection range and efficiency. Second, the internal flow channels of the turbine are often straight-walled or simply inclined, making airflow prone to separation and turbulence, resulting in significant energy loss and difficulty in forming stable, efficient directional airflow. Third, some turbine structures negatively impact spindle balance and system rigidity under high-speed rotation, limiting their application in high-speed machining conditions. Furthermore, existing technologies lack effective control over the dust's movement path and jet direction under turbine action, causing dust to diffuse randomly into the surrounding space. This makes the placement of subsequent dust collection devices dependent on experience, hindering their ability to work in synergy with the turbine and affecting the overall stability and reliability of the dust collection system. Meanwhile, the dust collection effect of some auxiliary dust collection structures decreases significantly when the distance from the workpiece surface is slightly greater, making it difficult to meet the working conditions of complex processing contours or multi-thickness plates.

[0004] Therefore, how to enhance the local negative pressure and airflow guidance capabilities of the machining area while ensuring the accuracy and high-speed operation stability of the spindle system, and effectively and orderly transport dust and chips to the external dust collection system, without introducing an additional independent power source, remains a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a turbocharged assisted dust collection method for machining centers, so as to solve the problem that the existing dust collection devices of CNC machining centers have limited negative pressure and airflow guidance capabilities, and the improvement of dust collection range and efficiency is not significant.

[0006] To achieve the above objectives, the present invention proposes a turbocharged assisted dust collection device, comprising: a turbine body and a separator cover, wherein the turbine body and the separator cover are detachably connected. The turbine body includes a hub, a first connecting member, and multiple blades. The hub and the first connecting member are connected by multiple blades. The upper part of each blade is connected to the hub and is arranged circumferentially along the hub. The lower part of each blade is connected to the first connecting member. The outer surface of each blade gradually slopes inward from bottom to top, so that the overall shape of its outer surface is a frustum. Its outer circumferential surface forms an outer contour structure that gradually narrows along the axial direction, thereby generating a radial converging effect on the surrounding airflow when rotating at high speed. Multiple fluid channels are provided between the hub and the first connecting member. A fluid channel is formed between two adjacent blades. Multiple first grooves are provided on the first connecting member. There is a certain distance between two adjacent first grooves. The first grooves are located at the bottom of the fluid channels and are connected to the fluid channels. The separator cover is detachably connected to the first connector. The separator cover is used to guide, disperse, and pre-distribute the airflow entering the inlet area of ​​the fluid channel.

[0007] Preferably, the separator cover includes a second connector, a flow guide rib, and a flow turbulence rib; The second connector has a first hole at its center, and a guide rib is arranged around the first hole. One end of the guide rib is connected to the edge of the first hole, and the other end of the guide rib is connected to the second connector. One end of the turbulence rib is connected to the guide rib, and the other end of the turbulence rib is connected to the second connector. The first hole is used to connect the processing area of ​​the machining center with the air intake space where the first slot is located.

[0008] The guide ribs and the separator cover are integrally formed. The guide ribs are used to guide the airflow to generate a circumferential distribution trend before the airflow enters the first slot. The turbulence ribs are used to locally disturb and redisperse the airflow, so that the airflow forms a more uniform velocity distribution before entering the first slot and the inlet of each fluid channel, thereby improving the intake consistency of each fluid channel and reducing the inlet turbulence intensity.

[0009] The separator cover is disc-shaped, and its outer periphery is matched with the first connecting piece. It is reliably positioned and detachably connected by screws, while forming a blocking path for larger particulate impurities to reduce the risk of foreign objects directly entering the high-speed rotating fluid channel.

[0010] Preferably, the hub is provided with a second hole, which extends from the upper part of the hub to the lower part of the hub; The hub has a rotation axis that passes through the center of the hub from the upper part and extends towards the lower part of the hub.

[0011] Preferably, the overall shape formed by the outer surfaces of the plurality of blades is a frustum, and the semi-cone angle of the frustum is 36°.

[0012] Preferably, each blade has a first side and a second side, the first side and the second side are positioned opposite each other, the first side is one sidewall of the fluid channel, and the second side is the sidewall of the adjacent fluid channel near the first side. The first side is tilted at an angle of 30° to 40° relative to the axis of rotation; The second side is tilted at an angle of 15° to 30° relative to the axis of rotation.

[0013] Preferably, the blade is inclined along the axial direction, and its guide surface is inclined in a certain circumferential direction relative to the radial direction based on the axial inclination.

[0014] The thickness of the blades gradually increases from the lower side to the upper side, forming a converging flow channel structure with a continuously decreasing cross-sectional area in the direction of airflow, thereby enhancing the airflow compression and acceleration effect and improving the negative pressure generation capability. The cross-sectional area is the cross-sectional area parallel to the bottom surface of the first connecting member. In this paper, the airflow direction is from the end of the fluid channel near the center of the turbine body to the outside of the turbine body. That is, the airflow direction is both from bottom to top and from inside to outside, but the main flow direction is from bottom to top. Alternatively, the first side of the fluid channel gradually extends towards the center of the fluid channel, so that each fluid channel forms a converging flow channel structure with a continuously decreasing cross-sectional area in the direction of airflow, so as to enhance the airflow compression and acceleration effect and improve the negative pressure formation capability; wherein, the cross-sectional area is the cross-sectional area parallel to the bottom surface of the first connector. In this paper, the airflow direction is from the end of the fluid channel near the center of the turbine body to the outside of the turbine body, that is, the airflow direction is both from bottom to top and from inside to outside, and the main direction of flow is from bottom to top.

[0015] Preferably, the top of the fluid channel is provided with a curved inner wall, which is a non-uniform curvature surface with a continuously varying radius of curvature along the axial direction and a radius of curvature of 20-40 mm; this enables the airflow to maintain a wall-hugging flow within the fluid channel and continuously accelerate in the radial and axial directions, thereby reducing separation and energy loss.

[0016] In this paper, non-uniform curvature surfaces refer to surfaces whose curvature is not the same everywhere.

[0017] Preferably, the cross-sectional profile of the first groove is formed by a smooth transition between two arcs with different radii of curvature. The first groove is connected to the inlet area of ​​the corresponding fluid channel, so that the airflow entering the turbine body forms a circumferential buffer and pressure equalization space before entering the fluid channel.

[0018] Preferably, a thermal expansion chuck is installed in the second hole, the thermal expansion chuck being used to connect with the spindle of the machining center; the thermal expansion chuck is provided with a thermal clamping bushing, the thermal clamping bushing being used to thermally assemble and connect with the shank end mill's shank, thereby achieving clamping and fixing of the shank end mill through thermal expansion and contraction; The heat-clamping bushing has a cylindrical structure, and multiple sets of second threaded holes are provided on the outer side of the heat-clamping bushing.

[0019] The second hole has three first threaded holes on its side wall; The outer surface of the heat-clamping bushing is provided with two sets of upper and lower second threaded holes in the circumferential direction, with three second threaded holes in each set. The positions of the second threaded holes are set accordingly to correspond to the positions of the first threaded holes, and each second threaded hole can correspond to one of the first threaded holes. The second threaded hole is connected to the first threaded hole by an M6 screw, thereby connecting the heat-clamped bushing to the turbine body. By selecting the second threaded hole of the upper or lower group to connect with the turbine body, the axial installation position of the turbine body can be adjusted to adapt to the installation requirements under different processing conditions.

[0020] The turbine body is made of aluminum alloy and its outer surface is coated with a wear-resistant hard anodized coating to improve its resistance to abrasive wear under long-term scouring conditions of dusty airflow and to ensure structural reliability and service life under high-speed rotation conditions.

[0021] An air intake guide surface is provided in the first connector or the area near the fluid channel inlet to guide the dust-laden airflow generated in the processing area into the first slot and fluid channel smoothly, reduce inlet impact and turbulence, and improve the efficiency of dust entering the turbine with the airflow.

[0022] To achieve the above objectives, the present invention proposes an installation method for a turbocharged auxiliary vacuum cleaner, applicable to the aforementioned turbocharged auxiliary vacuum cleaner, comprising the following steps: The turbine body is mounted on the thermal expansion chuck with screws, so that the turbine body rotates coaxially with the spindle of the machining center. The separator cover is fixed to the bottom of the first connector and covers part of the fluid channel inlet area, so that the airflow entering the fluid channel passes through the first hole of the separator cover and the adjustment of the circumferentially arranged guide ribs and turbulence ribs structure before entering. Preferably, a dust collection device is arranged around the outside of the turbine body, and the dust collection device is arranged at an angle of 40° to 60° with the axis of rotation and is located within the area covered by the jet cone surface of the fluid channel; The dust collection device has a dust collection port, and the axial distance between the dust collection port and the outer edge of the turbine body is adjusted to 1–2 times the turbine diameter, i.e., 120–250 mm.

[0023] To achieve the above objectives, this invention proposes a turbocharged assisted dust collection method for machining centers, comprising the following steps: S1. Provides the above-mentioned turbocharged auxiliary vacuuming device; S2. When cutting is performed in the machining center, the spindle of the machining center drives the turbine body to rotate synchronously, and during the rotation, a negative pressure airflow is formed in the circumference of the turbine body through the first groove and the fluid channel. S3. The dust and airflow generated in the processing area of ​​the processing center first enter the intake area through the separator cover, and are guided and dispersed by the circumferentially arranged guide ribs and turbulence ribs on the separator cover before entering the first tank. S4. The airflow and the dust it carries, after being regulated by the guide ribs and turbulence ribs, enter the first tank and are distributed to each fluid channel. The airflow is accelerated in the fluid channel by the converging flow channel structure. S5. By accelerating the airflow, the airflow carrying dust and chips is sprayed into the external space of the turbine body at a direction of 30° to 55° relative to the rotation axis of the turbine body when it leaves the fluid channel. Preferably, in step S6, a dust collection device is arranged around the outside of the turbine body to collect dust.

[0024] Preferably, in step S2, the turbine body is coaxially connected to the spindle of the machining center.

[0025] Preferably, in step S4, the blade is inclined along the axial direction, and the thickness of the blade gradually increases from the inner side of the blade to the outer side of the blade, so that each fluid channel forms a converging flow channel structure with a continuously decreasing cross-sectional area in the airflow direction, and the airflow is accelerated in the fluid channel through the converging flow channel structure. Alternatively, one side of the fluid channel gradually extends towards the center of the fluid channel, forming a converging flow channel structure with a continuously decreasing cross-sectional area in the direction of airflow. The airflow is accelerated within the fluid channel through the converging flow channel structure.

[0026] Compared with the prior art, the present invention has the following advantages: 1. The outer surface of each blade of the present invention gradually slopes inward from bottom to top, so that the overall shape of the outer surface is a frustum. Its outer circumferential surface forms an outer contour structure that gradually shrinks along the axial direction. Through the synergistic effect of the structure of the outer circumferential surface shrinking along the axial direction and the internal converging fluid channel, the turbine body can form a stable and directional negative pressure airflow near the processing area of ​​the machining center when rotating at high speed, thereby expanding the effective dust collection range and improving the dust collection capacity far away from the dust collection port area.

[0027] 2. The fluid channel is equipped with a curved inner wall with continuously varying curvature, which can guide the airflow to maintain its flow along the wall within the channel and achieve smooth acceleration, reducing airflow separation and turbulence loss, thereby improving the airflow's ability to carry dust and fine chips.

[0028] 3. The integrally molded blades between adjacent fluid channels form a converging flow channel structure, which is beneficial to enhance the airflow compression and acceleration effect, while reducing airflow interference between channels and improving the overall flow field stability.

[0029] 4. The first groove set at the first connector forms a circumferential buffer and pressure equalization space before the airflow enters the fluid channel, which helps to improve the air intake uniformity of each fluid channel inlet and reduce local turbulence and airflow pulsation at the inlet.

[0030] 5. The separator cover covers part of the fluid channel inlet area, allowing the airflow to pass through a transition space for pre-distribution before entering the fluid channel. This helps stabilize the intake state and enhances the synergistic effect of the fluid channel.

[0031] 6. The guide ribs and turbulence ribs on the separator cover guide the airflow circumferentially and redisperse it locally, making the airflow more evenly distributed before entering each fluid channel. At the same time, they block larger particulate impurities, improving the operational reliability of the device in actual processing environments.

[0032] 7. The second threaded hole is connected to the first threaded hole by an M6 screw, thereby connecting the heat-clamped bushing to the turbine body. This ensures good coaxiality and structural stability under high-speed rotation conditions, meeting the requirements of high-speed machining center operation.

[0033] 8. The turbine body adopts an integrated aluminum alloy structure and a hard anodized coating is formed on the surface, which can effectively improve its wear resistance under long-term scouring of dusty airflow, extend its service life and maintain a stable working condition.

[0034] 9. The present invention has a compact overall structure and can generate auxiliary dust suction airflow by rotating the spindle of the machining center without the need for an additional power source. It is easy to use with existing processing equipment and dust collection systems and has good engineering applicability. Attached Figure Description

[0035] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0036] Figure 1 This is one of the structural schematic diagrams of the turbine body and separator cover in Embodiment 1 of the present invention; Figure 2 This is the second schematic diagram of the turbine body and separator cover in Embodiment 1 of the present invention; Figure 3 This is one of the structural schematic diagrams of the turbine body in Embodiment 1 of the present invention; Figure 4 This is a second schematic diagram of the turbine body structure according to Embodiment 1 of the present invention; Figure 5 This is the third schematic diagram of the turbine body in Embodiment 1 of the present invention; Figure 6 This is one of the structural schematic diagrams of the separator cover in Embodiment 1 of the present invention; Figure 7 This is a second schematic diagram of the separator cover in Embodiment 1 of the present invention; Figure 8 This is a schematic diagram of the structure of the thermal expansion chuck in Embodiment 1 of the present invention; Figure 9 This is a schematic diagram of the turbine body, separator cover, and thermal expansion clamp according to Embodiment 1 of the present invention; Figure 10 This is a schematic diagram of the turbine body, thermal expansion chuck, and shank end mill according to Embodiment 1 of the present invention; Figure 11 This is a flowchart of Embodiment 2 of the present invention; Figure 12 This is a flowchart of Embodiment 3 of the present invention; In the figure: turbine body 1, hub 11, first connecting piece 12, blade 13, first side 131, second side 132, intake guide surface 133, fluid channel 14, curved inner wall 141, first groove 15, second hole 16, first threaded hole 17, separator cover 2, second connecting piece 21, guide rib 22, turbulence rib 23, first hole 24, thermal expansion chuck 3, thermal clamping bushing 31, second threaded hole 32, bushing 33, shank end mill 4, rotation axis Z, third hole 120, fourth hole 210. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0038] Example 1: As Figure 1-10 As shown, the present invention proposes a turbocharged assisted dust collection device, comprising: a turbine body 1 and a separator cover 2, wherein the turbine body 1 and the separator cover 2 are detachably connected. The turbine body 1 includes a hub 11, a first connecting member 12, and multiple blades 13. The hub 11 and the first connecting member 12 are connected by multiple blades 13. The upper part of the blades 13 is connected to the hub 11, and the blades 13 are arranged circumferentially along the hub 11. The lower part of the blades 13 is connected to the first connecting member 12. The outer surface of each blade 13 gradually slopes inward from bottom to top, so that the overall shape of its outer surface is a frustum. Its outer circumferential surface forms an outer contour structure that gradually shrinks along the axial direction, thereby generating a radial converging effect on the surrounding airflow when rotating at high speed, which is beneficial for attracting the dust generated in the processing area of ​​the machining center to the vicinity of the turbine body 1. Multiple fluid channels 14 are provided between the hub 11 and the first connecting member 12. A fluid channel 14 is formed between two adjacent blades 13. Multiple first grooves 15 are provided on the first connecting member 12. A certain distance is spaced between two adjacent first grooves 15. The first grooves 15 are located at the bottom of the fluid channel 14 and are connected to the fluid channel 14. The separator cover 2 is detachably connected to the first connector 12. The separator cover 2 is detachably fixed to the bottom of the first connector 12 by M6 screws. The separator cover 2 is used to guide, disperse and pre-distribute the airflow entering the inlet area of ​​the fluid channel 14.

[0039] like Figure 6-7 As shown, the separator cover 2 includes a second connector 21, a guide rib 22, and a turbulence rib 23; The second connector 21 has a first hole 24 at its center, and a guide rib 22 is arranged around the first hole 24. One end of the guide rib 22 is connected to the edge of the first hole 24, and the other end of the guide rib 22 is connected to the second connector 21. One end of the turbulence rib 23 is connected to the guide rib 22, and the other end of the turbulence rib 23 is connected to the second connector 21. The first hole 24 is used to connect the processing area of ​​the machining center with the air intake space where the first slot is located.

[0040] The guide rib 22 and the separator cover 2 are integrally formed. The guide rib 22 is used to guide the airflow to generate a circumferential distribution trend before the airflow enters the first slot. The turbulence ribs 23 are used to locally disturb and redisperse the airflow, so that the airflow forms a more uniform velocity distribution before entering the first slot and the inlet of each fluid channel, thereby improving the air intake consistency of each fluid channel and reducing the inlet turbulence intensity.

[0041] The separator cover 2 is disc-shaped, and its outer periphery is matched with the first connector 12. It is reliably positioned and detachably connected by screws, while forming a blocking path for larger particulate impurities to reduce the risk of foreign objects directly entering the high-speed rotating fluid channel.

[0042] The first connector 12 is provided with four third holes 120, and the second connector 21 is provided with four fourth holes 210. The positions of the third holes 120 and the fourth holes 210 are set accordingly. The third holes 120 and the fourth holes 210 are connected by M6 screws, thereby realizing the detachable connection between the separator cover 2 and the first connector 12.

[0043] like Figure 4-5 As shown, a second hole 16 is provided on the hub 11, and the second hole 16 extends from the upper part of the hub to the lower part of the hub; The hub 11 has a rotation axis Z, which passes through the center of the hub 11 from the upper part and extends towards the lower part of the hub 11.

[0044] like Figure 4-5 As shown, the overall shape formed by the outer surfaces of the plurality of blades 13 is a frustum, and the semi-cone angle of the frustum is 36°.

[0045] like Figure 5 As shown, each blade 13 has a first side 131 and a second side 132. The first side 131 and the second side 132 are positioned opposite each other. The first side 131 is one side wall of the fluid channel 14, and the second side 132 is the side wall of the adjacent fluid channel 14 near the first side 131. The tilt angle α of the first side 131 relative to the rotation axis Z is 30° to 40°, and the first side 131 is the leeward wall; The second side 132 has an inclination angle β of 15° to 30° relative to the rotation axis Z, and the second side 132 is a windward wall.

[0046] like Figure 4-5 As shown, the blade 13 is inclined along the axial direction, and the thickness of the blade 13 gradually increases from the lower side of the blade 13 to the upper side of the blade 13, so that each fluid channel 14 forms a converging flow channel structure with a continuously decreasing cross-sectional area in the airflow direction, thereby enhancing the airflow compression and acceleration effect and improving the negative pressure formation capability. This structure can compress and guide the airflow entering the fluid channel 14, increase the airflow speed and reduce the airflow interference between adjacent fluid channels 14, thereby enhancing the overall negative pressure formation capability and airflow stability.

[0047] Alternatively, the first side 131 of the fluid channel 14 gradually extends towards the center of the fluid channel, so that each fluid channel 14 forms a converging flow channel structure with a continuously decreasing cross-sectional area in the direction of airflow, thereby enhancing the airflow compression and acceleration effect and improving the negative pressure formation capability. This structure can compress and guide the airflow entering the fluid channel 14, increase the airflow speed and reduce the airflow interference between adjacent fluid channels 14, thereby enhancing the overall negative pressure formation capability and airflow stability.

[0048] The cross-sectional area is the cross-sectional area parallel to the bottom surface of the first connecting member. In this paper, the airflow direction is from the end of the fluid channel near the center of the turbine body to the outside of the turbine body. That is, the airflow direction is both from bottom to top and from inside to outside, but the main flow direction is from bottom to top.

[0049] like Figure 5 As shown, the top of the fluid channel 14 is provided with a curved inner wall 141. The curved inner wall 141 is a non-uniform curvature surface with a continuously varying radius of curvature along the axial direction, and the radius of curvature is 20 to 40 mm. This allows the airflow to maintain its flow close to the wall within the fluid channel 14 and to continuously accelerate in both the radial and axial directions, thereby reducing separation and energy loss. This enables the airflow to accelerate smoothly during the flow process, thereby improving its ability to carry dust and fine chips.

[0050] like Figure 3 As shown, the cross-sectional profile of the first groove 15 is formed by a smooth transition between two arcs with different radii of curvature. The first groove 15 is connected to the inlet region of the corresponding fluid channel 14, so that the airflow entering the turbine body 1 forms a circumferential buffer and pressure equalization space before entering the fluid channel 14. Here, the cross-section refers to the surface that extends from one side wall of the first groove to the other side wall and is perpendicular to the bottom surface of the first groove.

[0051] like Figure 8-10As shown, a thermal expansion chuck 3 is installed in the second hole 16. The thermal expansion chuck 3 is used to connect coaxially with the spindle of the machining center. The thermal expansion chuck 3 is provided with a thermal clamping sleeve 31. The thermal clamping sleeve 31 is used to thermally assemble and connect with the shank end mill 4, and the shank end mill is clamped and fixed by thermal expansion and contraction.

[0052] The heat-clamping bushing 31 has a cylindrical structure, and multiple sets of second threaded holes 32 are provided on the outer side surface of the heat-clamping bushing 31.

[0053] The thermal expansion chuck 3 has an outer diameter of 22mm and an axial length of 38mm. The center of the thermal expansion chuck 3 has an axial mounting hole with a diameter of 14mm. This axial mounting hole is used to mount the cutting tool and achieves interference clamping through a thermal fitting method. When heated, the axial mounting hole expands; after the tool is inserted, it contracts upon cooling, forming a high-precision coaxial clamping structure. This ensures that the tool has minimal radial runout under high-speed rotation conditions, improving machining stability and cutting accuracy.

[0054] The relatively small outer diameter of the thermal expansion chuck 3 allows for a larger effective air intake area for the turbine body 1 while ensuring structural strength when it is fitted together. With an outer diameter of 22mm, the thermal expansion chuck 3 occupies less space in the central area of ​​the turbine body 1 compared to conventional larger diameter clamping structures. This allows for a reduction in the diameter of the axial mounting hole in the turbine body 1 for turbines with the same outer diameter, thereby increasing the effective air intake area of ​​the turbine body 1, improving the area utilization rate of the turbine body 1's air intake, and enhancing negative pressure formation capability and airflow organization efficiency.

[0055] The thermal expansion chuck 3 is suitable for holding shank end mills 4, especially for shank end mills with a shank diameter of 8mm or 10mm, and can meet the machining needs of common 6mm or 8mm cutting diameter end mills. Through the matching design with commonly used shank end mills, the turbine body 1 maintains a reasonable tool-turbine space ratio under typical plate cutting, contour milling, and grooving conditions, thereby ensuring cutting rigidity while bringing the air intake of the turbine body 1 as close as possible to the cutting area, improving dust collection efficiency.

[0056] Through the above structural design, the thermal expansion chuck 3 not only achieves high-precision coaxial clamping of the tool, but also improves the area utilization and installation adaptability of the turbine body 1's air intake through its smaller outer diameter and adjustable installation structure. While ensuring high-speed rotation dynamic balance performance, it enhances the dust collection efficiency and processing adaptability of the overall system.

[0057] Three first threaded holes 17 are provided on the side wall of the second hole 16; The outer surface of the heat-clamping bushing 31 is provided with two sets of upper and lower second threaded holes 32 in the circumferential direction. Each set has three second threaded holes 32, and the specification of each second threaded hole 32 is M6 thread.

[0058] The upper part of the heat-clamping bushing 31 is provided with a bushing 33, and two sets of second threaded holes 32 are spaced apart in the axial direction. The axial distance between the set of second threaded holes 32 near the lower end face of the bushing 33 and the lower end face of the bushing 33 is 28mm, and the axial distance between the other set of second threaded holes 32 and the lower end face of the bushing 33 is 32mm.

[0059] The positions of the second threaded holes 32 and the first threaded holes 17 are respectively set, and each second threaded hole 32 can correspond to one of the first threaded holes 17. The second threaded hole 32 is connected to the first threaded hole 17 by an M6 screw, thereby connecting the heat-clamped bushing 31 to the turbine body 1. By selecting the second threaded hole 32 of the upper or lower group to connect with the turbine body 1, the axial installation position of the turbine body 1 can be adjusted. This allows for flexible adjustment of the distance between the turbine body 1 and the cutting area according to different plate thicknesses, tool extension lengths, and machining depths, thereby optimizing the airflow action position and improving the auxiliary dust collection effect, thus adapting to the installation requirements under different machining conditions.

[0060] The turbine body 1 is made of aluminum alloy and its outer surface is coated with a wear-resistant hard anodized coating to improve its resistance to abrasive wear under long-term scouring of dusty airflow and to ensure structural reliability and service life under high-speed rotation conditions.

[0061] An air intake guide surface 133 is provided in the first connector 12 or in the area near the inlet of the fluid channel 14. The air intake guide surface 133 is used to guide the dust-laden airflow generated in the processing area to smoothly enter the first groove and the fluid channel 14, reducing inlet impact and turbulence loss, thereby improving the efficiency of dust entering the turbine with the airflow.

[0062] The working principle of this embodiment: The turbine body 1 is mounted on the thermal expansion clamp 25 with screws, and then the separator cover 2 is fixed to the bottom of the first connector 12. The turbine body 1 rotates at high speed with the spindle of the machining center. Under the multi-stage airflow regulation of the first groove, the separator cover 2 and its guide ribs 22 and turbulence ribs 23, a stable and directional local negative pressure airflow is formed around the turbine body 1. The dust and chips generated in the machining area of ​​the machining center are first attracted to the vicinity of the first connector 12 under the action of the negative pressure airflow, and after being buffered and circumferentially distributed by the transition space under the separator cover 2 and the first groove, they enter each fluid channel 14. Under the guidance of the asymmetric converging fluid channel 14 formed by the first side 131 and the second side 132 and the curved inner wall 141, the airflow is continuously accelerated in the fluid channel 14, and finally ejected from the vicinity of the outer circumference of the turbine body 1 in a predetermined jet direction, and is captured by the external dust collection device, thereby realizing the continuous, stable and efficient auxiliary adsorption and discharge of dust and chips in the machining area of ​​the machining center.

[0063] Example 2, as Figure 11 As shown, based on the technical solution and working principle of Embodiment 1, this invention proposes an installation method for a turbocharged assisted dust collection device, including the following steps: The turbine body 1 is mounted on the thermal expansion chuck 25 with screws, so that the turbine body 1 rotates coaxially with the spindle of the machining center. The separator cover 2 is fixed to the bottom of the first connector 12 and covers part of the inlet area of ​​the fluid channel 14, so that the airflow entering the fluid channel 14 is adjusted by the first hole 24 of the separator cover 2 and the circumferentially arranged guide ribs 22 and turbulence ribs 23 before entering. A dust collection device is arranged around the outside of the turbine body 1, and the dust collection device is arranged at an angle of 40° to 60° with the rotation axis Z, and is located within the area covered by the injection cone surface of the fluid channel 14; The dust collection device has a dust collection port, and the axial distance between the dust collection port and the outer edge of the turbine body 1 is adjusted to 1–2 times the turbine diameter, i.e., 120–250 mm.

[0064] Example 3, as Figure 12 As shown, this invention proposes a turbocharged assisted dust collection method for machining centers, comprising the following steps: S1. Provide a turbocharged auxiliary dust collection device according to Embodiment 1 or Embodiment 2 above; S2. When cutting is performed in the machining center, the spindle of the machining center drives the turbine body 1 to rotate synchronously, and during the rotation, a negative pressure airflow is formed in the circumference of the turbine body through the first groove 15 and the fluid channel 14. S3. The dust and airflow generated in the processing area of ​​the processing center first enter the turbine body through the separator cover 2, and are guided and dispersed by the guide ribs 22 and turbulence ribs 23 arranged circumferentially on the separator cover 2 before entering the first slot 15. S4. The airflow and the dust it carries after being regulated by the guide ribs 22 and the turbulence ribs 23 enter the first tank 15 and are distributed to each fluid channel 14. The airflow is accelerated in the fluid channel 14 by the converging flow channel structure. S5. By accelerating the airflow, the airflow carrying dust and chips is sprayed into the external space of the turbine body at a direction of 30° to 55° relative to the rotation axis of the turbine body when it leaves the fluid passage 14. S6. A dust collection device is arranged around the outside of the turbine body 1 to collect dust.

[0065] In step S2, the turbine body 1 is coaxially connected to the spindle of the machining center.

[0066] In step S4, the blade 13 is inclined along the axial direction, and the thickness of the blade 13 gradually increases from the inner side of the blade 13 to the outer side of the blade 13, so that each fluid channel 14 forms a converging flow channel structure with a continuously decreasing cross-sectional area in the airflow direction, and the airflow is accelerated in the fluid channel 14 through the converging flow channel structure; or, one side of the fluid channel gradually extends towards the center of the fluid channel, so that each fluid channel 14 forms a converging flow channel structure with a continuously decreasing cross-sectional area in the airflow direction, and the airflow is accelerated in the fluid channel 14 through the converging flow channel structure.

[0067] In this invention, the "left, right, up, down" orientations / directions involved in the technical solution are... Figure 1 The displayed content serves as a reference benchmark; Furthermore, the terms "upper," "lower," "front," "rear," "left," and "right" used above are for descriptive purposes only and should not be construed as indicating or implying relative importance. Unless otherwise specifically stated, the relative steps, numerical expressions, and values ​​of components and steps described in these embodiments do not limit the scope of the invention.

[0068] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of the present invention. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present invention should be included in the scope of the claims of the present invention.

[0069] The above-described embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and are not intended to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the scope of the technology disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention.

Claims

1. A turbocharged assisted dust collection method for machining centers, characterized in that, Includes the following steps: S1. A turbocharged auxiliary dust collection device is provided, the device including at least: a turbine body (1) and a separator cover (2), the turbine body (1) and the separator cover (2) are detachably connected; the turbine body (1) includes a hub (11), a first connector (12) and multiple blades (13), the hub (11) and the first connector (12) are connected by multiple blades (13), multiple fluid channels (14) are provided between the hub (11) and the first connector (12), and multiple first grooves (15) are provided on the first connector (12); the separator cover (2) includes a second connector (21), a guide rib (22) and a turbulence rib (23), the guide rib (22) and the turbulence rib (23) are respectively connected to the second connector (21); S2. When cutting is performed in the machining center, the spindle of the machining center drives the turbine body (1) to rotate synchronously, and during the rotation, a negative pressure airflow is formed in the circumference of the turbine body through the first groove (15) and the fluid channel (14); S3. The dust and airflow generated in the processing area first enter the turbine body through the separator cover (2), and are guided and dispersed by the circumferentially arranged guide ribs (22) and turbulence ribs (23) on the separator cover (2) before entering the first slot (15); S4. After being regulated by the guide ribs (22) and the turbulence ribs (23), the airflow and the dust it carries enter the first tank (15) and are distributed to each fluid channel (14) to accelerate the airflow in the fluid channel (14). S5. By accelerating the airflow, the airflow carrying dust and chips is sprayed into the external space of the turbine body at a direction of 30° to 55° relative to the rotation axis of the turbine body when it leaves the fluid channel (14).

2. The turbocharger-assisted dust collection method for a machining center according to claim 1, characterized in that, In step S1, the upper part of the blade (13) is connected to the hub (11), and the blade (13) is arranged circumferentially along the hub (11). The lower part of the blade (13) is connected to the first connector (12). The outer surface of each blade (13) gradually tilts inward from bottom to top, and a fluid channel (14) is formed between two adjacent blades (13). There is a certain distance between two adjacent first grooves (15), the first groove (15) is located at the bottom of the fluid channel (14), and the first groove (15) is connected to the fluid channel (14); The separator cover (2) is detachably connected to the first connector (12). The separator cover (2) is used to guide, disperse and pre-distribute the airflow entering the inlet area of ​​the fluid channel (14). The second connector (21) has a first hole (24) at its center. A guide rib (22) is arranged around the first hole (24). One end of the guide rib (22) is connected to the edge of the first hole (24), and the other end of the guide rib (22) is connected to the second connector (21). One end of the turbulence rib (23) is connected to the guide rib (22), and the other end of the turbulence rib (23) is connected to the second connector (21).

3. A turbocharged assisted dust extraction method for a machining center according to claim 1 or 2, characterized in that, In step S2, the turbine body (1) is coaxially connected to the spindle of the machining center.

4. A turbocharged assisted dust extraction method for a machining center according to claim 1 or 2, characterized in that, A dust collection device is arranged around the outside of the turbine body (1) to collect dust.

5. A turbocharged assisted dust extraction method for a machining center according to claim 1 or 2, characterized in that, In step S4, the blade (13) is inclined along the axial direction, and the thickness of the blade (13) gradually increases from the lower side of the blade (13) to the upper side of the blade (13), so that each fluid channel (14) forms a converging flow channel structure with a continuously decreasing cross-sectional area in the airflow direction, and the airflow is accelerated in the fluid channel (14) through the converging flow channel structure. Alternatively, one side of the fluid channel extends gradually towards the center of the fluid channel, so that each fluid channel (14) forms a converging flow channel structure with a continuously decreasing cross-sectional area in the direction of airflow, and the airflow is accelerated in the fluid channel (14) through the converging flow channel structure.

6. A turbocharged assisted dust extraction method for a machining center according to claim 1 or 2, characterized in that, The cross-sectional profile of the first groove (15) is formed by two arcs with different radii of curvature. The first groove (15) is connected to the inlet area of ​​the corresponding fluid channel (14), so that the airflow entering the turbine body (1) forms a circumferential buffer and pressure equalization space before entering the fluid channel (14).

7. A turbocharged assisted dust extraction method for a machining center according to claim 1 or 2, characterized in that, The turbine body (1) is made of aluminum alloy and its outer surface is coated with a wear-resistant hard anodized coating.

8. A turbocharged assisted dust collection method for a machining center according to claim 1 or 2, characterized in that, The outer surfaces of the multiple blades (13) form an overall shape of a frustum, with a semi-cone angle of 36°.

9. A turbocharged assisted dust extraction method for a machining center according to claim 1 or 2, characterized in that, The top of the fluid channel (14) is provided with a curved inner wall (141), which is a non-uniform curvature surface with a continuously varying radius of curvature along the axial direction and a radius of curvature of 20 to 40 mm.

10. A turbocharged assisted dust extraction method for a machining center according to claim 1 or 2, characterized in that, Each blade (13) has a first side (131) and a second side (132), the first side (131) and the second side (132) are positioned opposite each other, the first side (131) is one side wall of the fluid channel (14), and the second side (132) is the side wall of the adjacent fluid channel (14) close to the first side (131); The first side surface (131) is tilted at an angle of 30° to 40° relative to the axis of rotation (Z); The second side (132) is tilted at an angle of 15° to 30° relative to the axis of rotation (Z).

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