Broaching device and method for blower impeller

Abstract

The broaching device comprises a device rack, a lifting mechanism, a broaching tool set, a rotating station mechanism, a cleaning and guniting mechanism and a driving device.The lifting mechanism is arranged on the device rack, the broaching tool set is fixedly connected to a lifting motion frame of the lifting mechanism and comprises a plurality of broaching tool bodies, and the rotating station mechanism is arranged on the lifting motion frame of the lifting mechanism. Besides, a rotating station mechanism is arranged at the position, located at the bottom of the broaching tool set, of the device rack, the rotating station mechanism comprises a rotating disc and a plurality of sets of station tables fixedly connected to the rotating disc, and the lifting motion frame is in power connection with the rotating disc through a one-way transmission mechanism. A cleaning and slurry spraying mechanism used for cleaning and cooling the broaching tool set is further arranged on the device rack, a driving device is fixedly connected to the device rack, and the driving device is in power connection with the lifting mechanism and the slurry pump body. The device has the characteristics of reducing the maintenance and repair cost, improving the production efficiency and improving the processing quality.

Description

Technical Field

[0001] The present invention relates to the technical field of broaching devices, and specifically to a broaching device and method for a blower impeller. Background Art

[0002] As a core component of fluid machinery, the processing accuracy of a blower impeller directly affects the performance and efficiency of the equipment. Traditional impeller manufacturing mostly uses milling, casting, or electro - machining methods, but there are problems such as low processing efficiency, large tool wear, and unstable surface quality. The broaching process has gradually become an important method for machining complex surfaces such as impeller tooth grooves due to its one - time forming. However, the existing broaching devices still have the following technical bottlenecks: In the prior art, the tool usually adopts an integral structure, that is, all broaching teeth are integrated on a single tool body. When some of the broaching teeth are worn or chipped, since the tool body is indivisible, the entire broaching tool must be replaced, resulting in a high maintenance cost. In addition, broaching is a closed - type cutting, and chips are easily accumulated in the tool tooth grooves or the workpiece processing area. There is a lack of an efficient chip cleaning means in the prior art, so that metal chips are easily adhered to the tool tooth surface under high temperature and high pressure, which aggravates tool wear and even changes the geometry of the cutting edge, affecting the processing accuracy. Summary of the Invention

[0003] Aiming at the above - mentioned deficiencies in the prior art, the purpose of the present invention is to provide a broaching device that can reduce maintenance and repair costs, improve production efficiency, and improve processing quality.

[0004] The technical solution adopted by the present invention to achieve the above - mentioned purpose is: a broaching device for a blower impeller, including a device frame, a lifting mechanism, a broaching tool group, a rotating station mechanism, a cleaning and spraying mechanism, and a driving device. The lifting mechanism is provided on the device frame, and the lifting mechanism includes a lifting frame capable of performing lifting motion. The broaching tool group is fixedly connected to the lifting frame in a detachable manner; The broaching tool group includes multiple groups of broaching tool bodies arranged annularly in sequence according to the broaching order on the lifting frame; The rotating station mechanism is provided at the bottom of the broaching tool group on the device frame. The rotating station mechanism includes a rotating disk and multiple groups of station tables fixedly connected to the rotating disk. The rotating disk is rotatably connected to the device frame. The number of multiple groups of station tables is the same as that of multiple groups of broaching tool bodies and corresponds one by one. The lifting frame and the rotating disk are power - connected through a one - way transmission mechanism. When the lifting frame performs a lifting or lowering motion, the rotating disk rotates by a certain angle; The cleaning and spraying mechanism is also provided on the device frame. The spraying mechanism includes a pulp pumping body, a spraying head, and a cleaning roller. A set of cleaning rollers is rotatably connected to the device frame corresponding to each set of broaching tool bodies. Cleaning bristles are provided on the cleaning rollers. A liquid channel is provided inside the cleaning rollers. The bottom end of the cleaning roller is fixedly connected to the spraying head, and the spraying head is communicated with the liquid channel. The pulp pumping body is fixedly connected to the device frame, and the pulp pumping body is connected to the cleaning roller through a pipeline. The pulp pumping body is connected to a pulp supply tank through a pipeline. The rotary disk and the multiple sets of cleaning rollers are power-connected through a power transmission mechanism. When the rotary disk rotates, the multiple sets of cleaning rollers rotate; The driving device is fixedly connected to the device frame, and the driving device is power-connected to the lifting mechanism and the pulp pumping body.

[0005] In the above technical solution, further, the lifting mechanism further includes a driving rotary disk, a traction arm, and a moving arm. Two sets of driving rotary disks are rotatably connected to the device frame. An eccentric shaft is fixedly connected to the outer side surface of each set of driving rotary disks, and the traction arm is rotatably connected to each eccentric shaft; The lifting moving frame is slidably connected to the device frame. A moving arm is fixedly connected to the lifting moving frame corresponding to each set of traction arms. The moving arm is slidably connected to the device frame, and the traction arm is rotatably connected to the corresponding moving arm; The driving device is power-connected to the two sets of driving rotary disks.

[0006] In the above technical solution, in order to realize the driving of the driving rotary disk by the driving device, the following structure is adopted: The two sets of driving rotary disks are connected through a connecting shaft. The connecting shaft is rotatably connected to the device frame. A first worm gear is fixedly connected to the connecting shaft. A power output shaft is rotatably connected to the device frame. A first worm is provided on the power output shaft. The first worm is meshed and connected with the first worm gear. The driving device is power-connected to the power output shaft; Power connection between the power output shaft and the pump shaft of the pulp pumping body is achieved through a transmission component.

[0007] In the above technical solution, the specific structure of the broaching tool body is: The broaching tool body includes a broaching cylinder and multiple broaching platforms fixedly connected inside the broaching cylinder. The broaching cylinder is fixedly connected to the lifting moving frame in a detachable manner. Multiple broaching tool heads are arranged in a stepped manner on the end surfaces of the multiple broaching platforms; The broaching platforms inside the multiple broaching tool bodies are set to corresponding structures in sequence according to the broaching order.

[0008] In the above technical solution, the rotating station mechanism further includes a protruding connecting frame and a rotating shaft. A plurality of groups of the protruding connecting frames are fixedly connected to the rotating disk in an annular array, and each group of the protruding connecting frames is fixedly connected with a station table. Furthermore, the station table includes an impeller table and positioning columns fixedly connected to the impeller table. A broaching gap area is provided on the impeller table of the protruding connecting frame in cooperation with the broaching table. A movement port is provided on each broaching cylinder in cooperation with the protruding connecting frame. When the broaching cylinder moves up and down, the impeller table can penetrate into the broaching cylinder, and the broaching table can pass through the broaching gap area, and the protruding connecting frame can pass through the movement port. In addition, a rotating shaft is fixedly connected to the rotating disk, and power connection is achieved between the rotating shaft and the lifting movement frame through the one-way transmission mechanism.

[0009] In the above technical solution, the specific structure of the one-way transmission mechanism is as follows: The one-way transmission mechanism includes a second worm gear, a second worm, a one-way driving gear, and a rack. The second worm gear is fixedly connected to the rotating shaft, the second worm is rotatably connected to the device frame, the second worm is meshed and connected with the second worm gear, the one-way driving gear is rotatably connected to the device frame, the wheel shaft of the one-way driving gear is fixedly connected to the second worm, the rack is fixedly connected to the lifting movement frame, and when the rack moves up and down, the rack can cooperate with the one-way driving gear.

[0010] In the above technical solution, the structure of the one-way driving gear is: The one-way driving gear includes a fixed ring platform, a rotating ring, a tooth ring part, and a ratchet tooth part. The wheel shaft is fixedly connected to the fixed ring platform. A ratchet groove is provided on the fixed ring platform. A plurality of groups of ratchet claws are rotatably connected in the ratchet groove, and an elastic part is fixedly connected to the ratchet groove in cooperation with each group of ratchet claws. The rotating ring is rotatably connected to the ratchet groove. The ratchet tooth part is provided on the inner wall of the rotating ring, and the ratchet tooth part cooperates with the ratchet claws. The tooth ring part is provided on the outer wall of the rotating ring, and the tooth ring part cooperates with the rack.

[0011] In the above technical solution, the cleaning roller is located inside the broaching cylinder. Furthermore, the power transmission mechanism includes a large gear and a small gear. The large gear is fixedly connected to the rotating shaft, and the small gear is fixedly connected to the top of each cleaning roller. The small gear is meshed and connected with the large gear.

[0012] In the above technical solution, in order to avoid interference caused by the rotation of the cleaning roller, there is also the following structure: A slurry supply pipeline is fixedly connected to the device frame. The slurry supply pipeline includes a main pipeline and a plurality of groups of branch pipelines connected to the main pipeline. A rotary liquid supply male head is fixedly connected to the end of each group of branch pipelines. A rotary liquid supply female head is fixedly connected to the top of each cleaning roller. The rotary liquid supply female head is rotatably connected within the rotary liquid supply male head. The main pipeline is connected to the slurry pumping pump body through a pipeline.

[0013] In the above technical solution, the transmission assembly adopts the following structure: The transmission assembly includes a large pulley, a small pulley, and a transmission belt. The large pulley is fixedly connected to the power output shaft, and the small pulley is fixedly connected to the pump shaft of the slurry pumping pump body. The large pulley and the small pulley are connected by the transmission belt.

[0014] According to the above broaching device for a blower impeller, a broaching method is also provided, including the following steps: Step 1: Place the workpiece to be processed on the initial workbench of the rotary station mechanism, so that the positioning post passes through the central hole of the workpiece, and the bottom surface of the workpiece fits against the impeller table. Step 2: Start the driving device, and synchronously drive the two groups of driving turntables to rotate through the power output shaft, so that the traction arm pushes the moving arm and the lifting moving frame downward, and the lifting moving frame drives the broaching tool set to descend. Step 3: Through the one-way transmission mechanism, when the lifting moving frame descends, it drives the rotary disk to rotate, and accurately positions the workpiece below the first broaching tool body. Step 4: The broaching tool body descends, the broaching cylinder sleeves the workpiece, and the broaching tool heads on the internal broaching table sequentially cut into the workpiece. Step 5: After broaching is completed, the lifting moving frame rises, and the rotary disk remains stationary. Step 6: When the lifting moving frame descends again, the one-way transmission mechanism drives the rotary disk to rotate a specific angle, and the workpiece moves below the next group of broaching tool bodies, and the broaching process is repeated. Step 7: After broaching at the final station is completed, take out the finished impeller, and load a new workpiece on the last workbench, and the system enters the next cycle.

[0015] The beneficial effects of the present invention: 1. The workpiece (with a central hole) can be placed on the last workbench, and then the broaching tool set is driven to descend by the lifting mechanism. At this time, under the action of the one-way transmission mechanism, the rotary disk rotates, so that the workpiece is driven to the broaching tool body corresponding to the initial broaching. When the lifting mechanism continues to drive the broaching tool set to descend, the workpiece can be initially broached by the broaching tool body. After broaching is completed, the lifting mechanism drives the broaching tool set to rise. At this time, under the action of the one-way transmission mechanism, the rotary station mechanism does not work. When the lifting mechanism continues to drive the broaching tool set to descend, the rotating disk continues to rotate a specific angle, so that the blank after initial broaching corresponds to the broaching tool body for the next process. Similarly, the blank can be further broached by the broaching tool body of the next group; The above process continuously cycles until the required impeller is formed after the blank is broached by the last group of broaching tool bodies. At this time, the impeller can be removed and a new blank can be placed; Through the above structure, the broaching production of the impeller can be realized, and multiple groups of broaching tool bodies perform broaching in sequence. In this way, when a group of broaching tool bodies is damaged, only the corresponding broaching tool body needs to be replaced, which can reduce the subsequent maintenance and repair costs. Moreover, the linkage of the lifting mechanism and the rotating disk realizes the automatic cycle of "descending for cutting - ascending for resetting - rotating for position changing", reducing manual intervention and improving production efficiency; 2. The driving device can drive the slurry pumping pump body to work, so that the slurry pumping pump body pumps the slurry in the slurry supply tank to the spray head at the bottom of the cleaning roller. The slurry is sprayed on the broaching tool body and the blank through the spray head, which can quickly take away the cutting heat, avoid deformation, hardness reduction (such as temper softening) or thermal cracks of the tool and the workpiece caused by high temperature. At the same time, the slurry forms a lubricating film at the tool-chip interface, reducing the cutting resistance and tool wear. Moreover, the slurry injection can wash away the chips in time, prevent the chips from accumulating and scratching the machined surface, and ensure the surface finish of complex profiles such as the impeller tooth grooves; In addition, when the broaching tool body rises, high-pressure slurry is ejected from the spray head to wash the internal grooves and tooth gaps of the broaching tool body, removing the adhered fine chips. When the broaching tool body descends, the power transmission mechanism can drive multiple groups of cleaning rollers to rotate, so that the cleaning brushes on the cleaning rollers can clean the inside of the broaching tool body again to physically scrape off the stubborn debris or metal adhesives that the slurry has not washed away. After the tool body is cleaned in this way, no residual debris is brought into the broaching process, ensuring the surface finish of the broached surface of the blank and improving the broaching quality. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram before broaching of the present invention; Figure 2 It is a schematic structural diagram during broaching of the present invention; Figure 3 It is a schematic structural diagram after broaching of the present invention; Figure 4 It is a schematic structural diagram of the lifting mechanism in the present invention; Figure 5 It is a schematic structural diagram of the cleaning and spraying mechanism in the present invention; Figure 6 For Figure 4 The detailed structural diagram of part a; Figure 7 It is a schematic structural diagram of the rotating station mechanism in the present invention; Figure 8 Schematic structural diagram of the preliminary broaching forming in the present invention; Figure 9 Schematic structural diagram of the two-step broaching forming in the present invention; Figure 10 Schematic structural diagram of the three-step broaching forming in the present invention; Figure 11 Schematic structural diagram of the four-step broaching forming in the present invention; Figure 12 is Figure 8 Schematic diagram of the detailed structure of part b in Figure 13 Schematic structural diagram of the one-way driving gear in the present invention; Figure 14 Schematic structural diagram of the slurry supply pipeline in the present invention.

[0017] In the figure: 100 device frame; 200 lifting mechanism, 201 lifting moving frame, 202 driving turntable, 203 traction arm, 204 moving arm, 205 eccentric shaft, 206 connecting shaft, 207 worm gear one, 208 power output shaft, 209 worm one; 300 broaching tool set, 301 broaching tool body, 302 broaching cylinder, 303 broaching table, 304 broaching tool head, 305 moving port; 400 rotating station mechanism, 401 rotating disk, 402 station table, 403 protruding connecting frame, 404 rotating shaft, 405 impeller table, 406 positioning post, 407 broaching gap area; 500 cleaning and spraying mechanism, 501 slurry pumping pump body, 502 spraying head, 503 cleaning roller, 504 cleaning brush bristles, 505 transmission component, 506 main pipeline, 507 branch pipeline, 508 rotating liquid supply male head, 509 rotating liquid supply female head; 600 driving device; 700 one-way transmission mechanism, 701 worm gear two, 702 worm two, 703 one-way driving gear, 704 rack, 705 fixed ring platform, 706 rotating ring, 707 tooth ring part, 708 ratchet tooth part, 709 wheel shaft, 710 ratchet groove, 711 ratchet pawl; 800 power transmission mechanism, 801 large gear, 802 small gear. Specific implementation mode

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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.

[0019] Example 1

[0020] Please refer to Figures 1 - 3 a broaching device for a blower impeller, which includes a device frame 100, a lifting mechanism 200, a broaching tool set 300, a rotating station mechanism 400, a cleaning and spraying mechanism 500, and a driving device 600. First of all, a lifting mechanism 200 is provided on the device frame 100. Specifically, please refer to Figure 4 、 Figure 5 , the lifting mechanism 200 includes a lifting moving frame 201, a driving turntable 202, a traction arm 203, and a moving arm 204. That is, two groups of driving turntables 202 are rotatably connected to the device frame 100, and a set of eccentric shafts 205 are fixedly connected to the outer side surfaces of each group of driving turntables 202. A traction arm 203 is rotatably connected to each group of eccentric shafts 205; In addition, a lifting moving frame 201 is also slidably connected to the device frame 100. A moving arm 204 is fixedly connected to the lifting moving frame 201 corresponding to each group of traction arms 203. The moving arm 204 is slidably connected to the device frame 100. The end of the traction arm 203 is rotatably connected to the end of the corresponding moving arm 204. A driving device 600 is also fixedly connected to the device frame 100. The driving device 600 is power-connected to the two groups of driving turntables 202, so that the driving device 600 can drive the two groups of driving turntables 202 to rotate; Furthermore, the two groups of driving turntables 202 are connected by a connecting shaft 206, and the connecting shaft 206 is rotatably connected to the device frame 100. A worm gear 207 is fixedly connected to the connecting shaft 206. A power output shaft 208 is rotatably connected to the device frame 100. A worm 209 is provided on the power output shaft 208. The worm 209 is meshed and connected to the worm gear 207. The driving device 600 is power-connected to the power output shaft 208. By driving the driving device 600, the power output shaft 208 can be driven to rotate, so that the worm 209 rotates. The worm 209 then drives the worm gear 207 to rotate, and finally the rotation of the driving turntable 202 is realized. When the driving turntable 202 rotates, under the action of the traction arm 203, the moving arm 204 can perform a reciprocating lifting motion, that is, the lifting moving frame 201 moves up and down on the device frame 100; Secondly, please refer to Figure 4 、 Figure 6, a broaching tool set 300 is detachably and fixedly connected to the above-mentioned lifting and moving frame 201. The broaching tool set 300 includes multiple groups of broaching tool bodies 301 that are arranged annularly in sequence according to the broaching order on the lifting and moving frame 201. That is to say, when broaching a blank, the blank is sequentially passed through multiple groups of broaching tool bodies 301 to achieve step-by-step broaching, and finally the required structure is achieved. In this way, multiple groups of broaching tool bodies 301 perform broaching in sequence. When a group of broaching tool bodies 301 is damaged, only the corresponding broaching tool body 301 needs to be replaced, which can reduce subsequent maintenance and repair costs. Specifically, in this embodiment, please refer to Figures 8 - 12 , the broaching tool body 301 includes a broaching cylinder 302 and multiple groups of broaching platforms 303 fixedly connected inside the broaching cylinder 302. The broaching cylinder 302 is detachably connected (such as by bolts) to the lifting and moving frame 201. Multiple groups of broaching tool heads 304 are arranged in a stepped manner on the end faces of multiple groups of broaching platforms 303. That is, the broaching tool heads 304 on each group of broaching platforms 303 are arranged in a stepped manner to form a continuous cutting level. Among the above-mentioned multiple groups of broaching tool bodies 301, the broaching platforms 303 inside are set to corresponding structures in sequence according to the broaching order; Furthermore, please refer to Figures 1 - 3 , a rotating station mechanism 400 is also provided at the bottom of the broaching tool set 300 on the above-mentioned device frame 100. Please refer to Figure 7 again. The rotating station mechanism 400 includes a rotating disk 401 and multiple groups of station platforms 402 fixedly connected to the rotating disk 401, and also includes a protruding connecting frame 403 and a rotating shaft 404. That is, the rotating disk 401 is rotatably connected to the device frame 100. Multiple groups of protruding connecting frames 403 are fixedly connected in an annular array on the rotating disk 401. Each group of protruding connecting frames 403 is fixedly connected with a station platform 402. The number of multiple groups of station platforms 402 here is the same as that of multiple groups of broaching tool bodies 301 and they correspond one by one; To cooperate with the broaching tool body 301 with the above structure, the station platform 402 here includes an impeller platform 405 and a positioning column 406 fixedly connected to the impeller platform 405. That is, a broaching gap area 407 is provided on the impeller platform 405 to cooperate with the broaching platform 303. A movement port 305 is provided on each broaching cylinder 302 to cooperate with the protruding connecting frame 403. When the broaching cylinder 302 performs a lifting movement, the impeller platform 405 can penetrate into the broaching cylinder 302, and the broaching platform 303 can pass through the broaching gap area 407, and the protruding connecting frame 403 can pass through the movement port 305; Furthermore, a rotating shaft 404 is fixedly connected to the rotating disk 401. The rotating shaft 404 is power-connected to the lifting and moving frame 201 through a one-way transmission mechanism 700, such that when the lifting and moving frame 201 moves up or down, the rotating disk 401 rotates by a certain angle. In this embodiment, under the action of the one-way transmission mechanism 700, when the lifting and moving frame 201 descends, the rotating disk 401 rotates by a specific angle, and when the lifting and moving frame 201 ascends, the rotating disk 401 does not rotate; Please refer to Figures 1 - 12 , when broaching the blank (with a central hole) through the above structure, the blank can be placed on the end working table 402, that is, the positioning column 406 is passed through the central hole of the blank, and the blank is located on the impeller table 405. Then, the driving device 600 is used to drive the driving rotating disk 202 to rotate, such that under the action of the traction arm 203, the moving arm 204 drives the lifting and moving frame 201 to descend, which also causes the broaching tool set 300 to descend. At this time, under the action of the one-way transmission mechanism 700, the rotating disk 401 rotates, causing the blank to be brought to the broaching tool body 301 corresponding to the initial broaching; When the lifting mechanism 200 continues to drive the broaching tool set 300 to descend, the blank can be initially broached by the broaching tool body 301. Specifically, when the broaching tool body 301 gradually descends, the broaching cylinder 302 serves as the main support, and multiple broaching platforms 303 inside it are advanced synchronously. The broaching tool heads 304 on each broaching platform 303 are distributed in a stepped manner, forming continuous cutting levels. When the broaching cylinder 302 moves along the axial direction of the blank, the broaching tool heads 304 of each layer participate in cutting in a preset order; After the broaching is completed, the lifting and moving frame 201 drives the broaching tool set 300 to ascend. At this time, under the action of the one-way transmission mechanism 700, the rotating working position mechanism 400 does not work; When the lifting and moving frame 201 continues to drive the broaching tool set 300 to descend, the rotating disk 401 continues to rotate by a specific angle, so that the blank after the initial broaching corresponds to the broaching tool body 301 of the next process. Through the same broaching operation, the blank can be further broached by the next set of broaching tool bodies 301; By continuously circulating in the same way, until the blank is broached by the last set of broaching tool bodies 301, the required impeller can be formed. At this time, the impeller can be removed and a new blank can be placed; Through the above structure, the broaching production of the impeller can be realized, and multiple broaching tool bodies 301 perform broaching in sequence. In this way, when one set of broaching tool bodies 301 is damaged, only the corresponding broaching tool body 301 needs to be replaced, which can reduce the subsequent maintenance and repair costs. Moreover, the linkage between the lifting mechanism 200 and the rotating disk 401 realizes an automatic cycle of "descending for cutting - ascending for resetting - rotating for position changing", reducing manual intervention and improving production efficiency; Furthermore, a cleaning and slurry spraying mechanism 500 is also provided on the above-mentioned device frame 100. The slurry spraying mechanism includes a slurry pumping body 501, a slurry spraying head 502, and a cleaning roller 503. That is, a set of cleaning rollers 503 are rotatably connected to the device frame 100 corresponding to each set of broaching blades 301. Cleaning bristles 504 are provided on the cleaning rollers 503. The cleaning rollers 503 are located inside the broaching cylinder 302. A liquid channel is provided inside the cleaning rollers 503. The bottom end of the cleaning roller 503 is fixedly connected to the slurry spraying head 502, and the slurry spraying head 502 is communicated with the liquid channel; In addition, a slurry pumping body 501 is fixedly connected to the device frame 100. The above-mentioned power output shaft 208 and the pump shaft of the slurry pumping body 501 are connected by a transmission assembly 505 to achieve power connection. When the driving device 600 drives the power output shaft 208 to rotate, the slurry pumping body 501 can be synchronously driven to work. Here, the transmission assembly 505 includes a large belt pulley, a small belt pulley, and a transmission belt. That is, a large belt pulley is fixedly connected to the power output shaft 208, a small belt pulley is fixedly connected to the pump shaft of the slurry pumping body 501, and the large belt pulley and the small belt pulley are connected by a transmission belt; The above-mentioned slurry pumping body 501 is connected by a pipeline to the cleaning roller 503, and the slurry pumping body 501 is connected by a pipeline to a slurry supply tank. Furthermore, the rotary disk 401 and multiple sets of cleaning rollers 503 are connected by a power transmission mechanism 800 to achieve power connection. When the rotary disk 401 rotates, multiple sets of cleaning rollers 503 rotate; Combined with the above structure, the driving device 600 can drive the slurry pumping body 501 to work, so that the slurry pumping body 501 pumps the slurry in the slurry supply tank to the slurry spraying head 502 at the bottom of the cleaning roller 503. The slurry is sprayed on the broaching blade 301 and the blank through the slurry spraying head 502. In this way, the cutting heat can be quickly removed, avoiding deformation, hardness reduction (such as temper softening) or thermal cracks of the tool and the workpiece due to high temperature. At the same time, a lubricating film is formed at the tool-chip interface, reducing the cutting resistance and reducing tool wear. Furthermore, the slurry injection can wash away the chips in time, preventing the chips from accumulating and scratching the machined surface, and ensuring the smoothness of complex surfaces such as impeller tooth grooves; In addition, when the broaching blade 301 rises, the high-pressure slurry is ejected from the slurry spraying head 502 to wash the internal grooves and tooth gaps of the broaching blade 301 and remove the adhered fine chips. When the broaching blade 301 descends, the power transmission mechanism 800 can drive multiple sets of cleaning rollers 503 to rotate, so as to clean the inside of the broaching blade 301 again through the cleaning bristles 504 on the cleaning rollers 503, physically scraping off the stubborn debris or metal adhesives that the slurry has not washed away. After the tool body is cleaned in this way, no residual debris is brought into the broaching process, ensuring the smoothness of the broaching surface of the blank and improving the broaching quality.

[0021] In this embodiment, to avoid interference caused by the rotation of the cleaning roller 503, there is also the following structure, that is, a slurry supply pipeline is fixedly connected to the device frame 100. The slurry supply pipeline includes a main pipeline 506 and multiple groups of branch pipelines 507 connected to the main pipeline 506. The end of each group of branch pipelines 507 is fixedly connected with a rotary liquid supply male head 508, and the top of each cleaning roller 503 is fixedly connected with a rotary liquid supply female head 509. The rotary liquid supply female head 509 is rotatably connected within the rotary liquid supply male head 508, and the main pipeline 506 is connected to the slurry pumping pump body 501 through a pipeline.

[0022] Embodiment 2

[0023] Please refer to Figure 6 、 Figure 13 , a broaching device for a blower impeller. On the basis of Embodiment 1, in this embodiment, the one-way drive mechanism 700 includes a second worm gear 701, a second worm 702, a one-way drive gear 703, and a rack 704. That is, a second worm gear 701 is fixedly connected to the rotating shaft 404, and a second worm 702 is rotatably connected to the device frame 100. The second worm 702 is meshed with the second worm gear 701. A one-way drive gear 703 is rotatably connected to the device frame 100, and the axle 709 of the one-way drive gear 703 is fixedly connected to the second worm 702. In addition, a rack 704 is fixedly connected to the lifting movement frame 201. When the rack 704 moves up and down, the rack 704 can cooperate with the one-way drive gear 703. That is to say, when the lifting movement table descends, the rack 704 can drive the one-way drive gear 703 (at this time, the broaching cylinder 302 has not started broaching work), so that the one-way drive gear 703 drives the second worm 702 to rotate, and the second worm 702 drives the second worm gear 701 to rotate, causing the rotating disk 401 to rotate. By using the self-locking effect of the second worm 702 and the second worm gear 701, the stability of the rotating disk 401 can also be ensured. When the lifting movement table ascends, under the action of the one-way drive gear 703, the rotating disk 401 does not rotate; Furthermore, this embodiment also provides a structure of a one-way drive gear 703. That is, the one-way drive gear 703 includes a fixed ring platform 705, a rotating ring 706, a toothed ring portion 707, and a ratchet tooth portion 708. A wheel shaft 709 is fixedly connected to the fixed ring platform 705. A ratchet groove 710 is provided on the fixed ring platform 705. A plurality of pawls 711 are rotatably connected in the ratchet groove 710. An elastic member is fixedly connected to each group of pawls 711 in the ratchet groove 710. The rotating ring 706 is rotatably connected to the ratchet groove 710. A ratchet tooth portion 708 is provided on the inner wall of the rotating ring 706. The ratchet tooth portion 708 cooperates with the pawls 711. A toothed ring portion 707 is provided on the outer wall of the rotating ring 706. The toothed ring portion 707 cooperates with the rack 704. In this way, when the rack 704 descends, the rack 704 can cooperate with the toothed ring portion 707 to cause the rotating ring 706 to rotate. At this time, under the cooperation of the ratchet tooth portion 708 and the pawls 711, the fixed ring platform 705 also rotates, and finally the power is transmitted to the second worm 702. When the rack 704 ascends, the rack 704 cooperates with the toothed ring portion 707 to cause the rotating ring 706 to rotate. However, under the action of the ratchet tooth portion 708, the pawls 711 will rotate, making the ratchet tooth portion 708 unable to drive the fixed ring platform 705 to rotate, and the second worm 702 will not rotate.

[0024] Please refer to Figure 5 , in this embodiment, the power transmission mechanism 800 includes a large gear 801 and a small gear 802. A large gear 801 is fixedly connected to the rotating shaft 404. A small gear 802 is fixedly connected to the top of each cleaning roller 503. The small gear 802 is meshed with the large gear 801. In this way, when the rotating shaft 404 rotates, the large gear 801 rotates, and the large gear 801 drives the small gear 802 to rotate, so that the cleaning roller 503 can rotate.

[0025] Embodiment 3

[0026] Please refer to Figures 1 - 14 , for a broaching device of a blower impeller according to Embodiment 1, a broaching method is also provided, including the following steps: Step 1: Place the workpiece to be processed on the initial workbench 402 of the rotating work station mechanism 400, so that the positioning column 406 passes through the central hole of the workpiece, and the bottom surface of the workpiece fits with the impeller table 405; Step 2: Start the driving device 600, and synchronously drive the two driving turntables 202 to rotate synchronously through the power output shaft 208, so that the traction arm 203 pushes the moving arm 204 and the lifting moving frame 201 to move downward, and the lifting moving frame 201 drives the broaching tool set 300 to descend; Step 3: Through the one-way transmission mechanism 700, when the lifting moving frame 201 descends, it drives the rotating disk 401 to rotate, and accurately positions the workpiece below the first broaching tool body 301; Step 4: The broaching tool body 301 descends, the broaching cylinder 302 sleeves the blank, and the broaching tool head 304 on the internal broaching table 303 sequentially cuts into the blank; Step 5: After broaching is completed, the lifting and moving frame 201 ascends, and the rotating disk 401 remains stationary; Step 6: When the lifting and moving frame 201 descends again, the one-way transmission mechanism 700 drives the rotating disk 401 to rotate a specific angle, and the blank is moved below the next set of broaching tool bodies 301, and the broaching process is repeated; Step 7: After broaching at the final station is completed, the finished impeller is taken off, and a new blank is loaded on the last station table 402, and the system enters the next cycle.

[0027] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present invention. Any reference signs in the claims should not be regarded as limiting the claimed invention.

[0028] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A broaching device for a blower impeller, comprising a device frame (100), a lifting mechanism (200), a broaching tool set (300), a rotary station mechanism (400), a cleaning and spraying mechanism (500) and a driving device (600), characterized in that: The lifting mechanism (200) is provided on the device frame (100). The lifting mechanism (200) includes a lifting moving frame (201), and the broaching tool set (300) is detachably connected to the lifting moving frame (201); The broaching tool set (300) includes multiple groups of broaching tool bodies (301) arranged in a circular order in sequence according to the broaching sequence on the lifting moving frame (201); The rotating station mechanism (400) is provided at the bottom of the broaching tool set (300). The rotating station mechanism (400) includes a rotating disk (401) and multiple groups of station tables (402) fixed on the rotating disk (401). The rotating disk (401) is rotatably connected to the device frame (100). The number of multiple groups of the station tables (402) is the same as that of multiple groups of the broaching tool bodies (301) and they correspond one by one. A power connection is realized between the lifting moving frame (201) and the rotating disk (401) through a one-way transmission mechanism (700). When the lifting moving frame (201) moves up or down, the rotating disk (401) rotates by a certain angle; The driving device (600) is fixedly connected to the device frame (100), and the driving device (600) is in power connection with the lifting mechanism (200) and the slurry pumping pump body (501).

2. The broaching device for a blower impeller according to claim 1, characterized in that: The cleaning and slurry spraying mechanism (500) is further provided on the device frame (100). The slurry spraying mechanism includes a slurry pumping pump body (501), a slurry spraying head (502), and a cleaning roller (503). One group of the cleaning rollers (503) is rotatably connected to the device frame (100) corresponding to each group of the broaching tool bodies (301). Cleaning bristles (504) are provided on the cleaning roller (503). A liquid channel is arranged inside the cleaning roller (503). The slurry spraying head (502) is fixedly connected to the bottom end of the cleaning roller (503), and the slurry spraying head (502) is communicated with the liquid channel. The slurry pumping pump body (501) is fixedly connected to the device frame (100). A pipeline connection is provided between the slurry pumping pump body (501) and the cleaning roller (503). The slurry pumping pump body (501) is pipeline-connected to a slurry supply tank. A power connection is realized between the rotating disk (401) and multiple groups of the cleaning rollers (503) through a power transmission mechanism (800). When the rotating disk (401) rotates, multiple groups of the cleaning rollers (503) rotate; The lifting mechanism (200) further includes a driving turntable (202), a traction arm (203), and a moving arm (204). Two groups of the driving turntables (202) are rotatably connected to the device frame (100). An eccentric shaft (205) is fixedly connected to the outer side surface of each group of the driving turntables (202), and the traction arm (203) is rotatably connected to each group of the eccentric shafts (205); The lifting movement frame (201) is slidably connected to the device frame (100). A movement arm (204) is fixedly connected to the lifting movement frame (201) corresponding to each group of the traction arms (203). The movement arm (204) is slidably connected to the device frame (100). The traction arm (203) is rotatably connected to the corresponding movement arm (204). The driving device (600) is power-connected to two groups of driving turntables (202).

3. The broaching device for a blower impeller according to claim 2, characterized in that: Two groups of driving turntables (202) are connected by a connecting shaft (206). The connecting shaft (206) is rotatably connected to the device frame (100). A first worm gear (207) is fixedly connected to the connecting shaft (206). A power output shaft (208) is rotatably connected to the device frame (100). A first worm (209) is provided on the power output shaft (208). The first worm (209) is meshed and connected with the first worm gear (207). The driving device (600) is power-connected to the power output shaft (208). Power connection between the power output shaft (208) and the pump shaft of the slurry pumping pump body (501) is achieved through a transmission assembly (505).

4. A broaching device for a blower impeller according to claim 3, characterized in that: The broaching tool body (301) includes a broaching cylinder (302) and a plurality of broaching platforms (303) fixedly connected inside the broaching cylinder (302). The broaching cylinder (302) is fixedly connected to the lifting movement frame (201) in a detachable manner. A plurality of broaching tool heads (304) are arranged in a stepped manner on the end faces of the plurality of broaching platforms (303). The broaching platforms (303) inside the plurality of broaching tool bodies (301) are set to corresponding structures in sequence according to the broaching order.

5. A broaching device for a blower impeller according to claim 4, characterized in that: The rotary station mechanism (400) further includes a protruding connecting frame (403) and a rotary shaft (404). A plurality of the protruding connecting frames (403) are fixedly connected to the rotary disk (401) in an annular array. A station platform (402) is fixedly connected to each of the protruding connecting frames (403). The station platform (402) includes an impeller platform (405) and a positioning column (406) fixedly connected to the impeller platform (405). A broaching gap area (407) is provided on the impeller platform (405) to cooperate with the broaching platform (303). A movement port (305) is provided on each broaching cylinder (302) to cooperate with the protruding connecting frame (403). When the broaching cylinder (302) moves up and down, the impeller platform (405) can penetrate into the broaching cylinder (302), and the broaching platform (303) can pass through the broaching gap area (407), and the protruding connecting frame (403) can pass through the movement port (305). A rotary shaft (404) is fixedly connected to the rotary disk (401). Power connection between the rotary shaft (404) and the lifting movement frame (201) is achieved through the one-way transmission mechanism (700).

6. The broaching device for a blower impeller according to claim 5, characterized in that: The one-way transmission mechanism (700) includes a second worm wheel (701), a second worm (702), a one-way drive gear (703), and a rack (704). The second worm wheel (701) is fixedly connected to the rotating shaft (404). The second worm (702) is rotatably connected to the device frame (100). The second worm (702) is meshed with the second worm wheel (701). The one-way drive gear (703) is rotatably connected to the device frame (100). The axle (709) of the one-way drive gear (703) is fixedly connected to the second worm (702). The rack (704) is fixedly connected to the lifting movement frame (201). When the rack (704) moves up and down, the rack (704) can cooperate with the one-way drive gear (703).

7. A broaching device for a blower impeller according to claim 6, characterized in that: The one-way drive gear (703) includes a fixed ring platform (705), a rotating ring (706), a toothed ring part (707), and a ratchet tooth part (708). The axle (709) is fixedly connected to the fixed ring platform (705). A ratchet groove (710) is provided on the fixed ring platform (705). A plurality of sets of pawls (711) are rotatably connected in the ratchet groove (710). An elastic member is fixedly connected to each set of pawls (711) in the ratchet groove (710). The rotating ring (706) is rotatably connected to the ratchet groove (710). The ratchet tooth part (708) is provided on the inner wall of the rotating ring (706). The ratchet tooth part (708) cooperates with the pawls (711). The toothed ring part (707) is provided on the outer wall of the rotating ring (706). The toothed ring part (707) cooperates with the rack (704).

8. A broaching device for a blower impeller according to claim 7, characterized in that: The cleaning roller (503) is located inside the broaching cylinder (302). The power transmission mechanism (800) includes a large gear (801) and a small gear (802). The large gear (801) is fixedly connected to the rotating shaft (404). The small gear (802) is fixedly connected to the top of each cleaning roller (503). The small gear (802) is meshed with the large gear (801).

9. A broaching device for a blower impeller according to claim 8, characterized in that: A slurry supply pipeline is fixedly connected to the device frame (100). The slurry supply pipeline includes a main pipeline (506) and a plurality of sets of branch pipelines (507) connected to the main pipeline (506). The end of each branch pipeline (507) is fixedly connected with a rotating liquid supply male head (508). The rotating liquid supply female head (509) is fixedly connected to the top of each cleaning roller (503). The rotating liquid supply female head (509) is rotatably connected inside the rotating liquid supply male head (508). The main pipeline (506) is connected to the slurry pumping pump body (501) through a pipeline.

10. A broaching method using the broaching device of the blower impeller described in claim 9, characterized in that, It includes the following steps: Step 1: Place the blank to be processed on the initial working table (402) of the rotating working position mechanism (400), so that the positioning column (406) passes through the central hole of the blank, and the bottom surface of the blank is attached to the impeller table (405). Step 2: Start the driving device (600), synchronously drive the two groups of driving turntables (202) to rotate synchronously through the power output shaft (208), so that the traction arm (203) pushes the moving arm (204) and the lifting moving frame (201) to move downward, and the lifting moving frame (201) drives the broaching tool set (300) to descend; Step 3: Through the one-way transmission mechanism (700), when the lifting moving frame (201) descends, it drives the rotating disk (401) to rotate, and accurately positions the blank under the first broaching tool body (301); Step 4: The broaching tool body (301) descends, the broaching cylinder (302) sleeves the blank, and the broaching tool heads (304) on the internal broaching table (303) successively cut into the blank; Step 5: After broaching is completed, the lifting moving frame (201) rises, and the rotating disk (401) remains stationary; Step 6: When the lifting moving frame (201) descends again, the one-way transmission mechanism (700) drives the rotating disk (401) to rotate a specific angle, and the blank is moved under the next group of broaching tool bodies (301), and the broaching process is repeated; Step 7: After the broaching at the final station is completed, take off the finished impeller, and load a new blank on the last station table (402), and the system enters the next cycle.

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