Curtain wall keel precise punching device

Abstract

The invention relates to the technical field of metal frame drilling, and discloses a precise drilling device for curtain wall keels, comprising a drilling unit, wherein the output end of the drilling unit is equipped with a drilling tool, the interior of the drilling tool is provided with a centrifugal grinding component for separating the residual material on the inner wall of the keel, and the bottom of the centrifugal grinding component is provided with a stress release component for increasing the natural deformation space of the keel. When the drilling tool rotates, the built-in bristles automatically adhere to the inner wall and bottom of the keel under the action of centrifugal force, so as to accurately and efficiently remove the residual material and burrs generated in the drilling process. This instant cleaning mechanism not only ensures the smoothness of the hole mouth, but also greatly reduces the need for subsequent manual deburring, thereby improving the safety of the operation and reducing the operation risk. In addition, since the bristles are evenly stressed, their wear is more consistent, which helps to maintain the accuracy of the drilling and the balance of the tool, and ensures the stability of the drilling quality.

Description

Technical Field

[0001] The invention relates to the technical field of metal frame drilling, in particular to a curtain wall keel precision drilling device. Background Art

[0002] The curtain wall keel punching device is used to accurately drill holes on the curtain wall keel to meet the bolt connection, fixing or other installation requirements during the curtain wall installation process.

[0003] However, there are still some problems with the existing curtain wall keel punching device: First, the existing curtain wall keel punching device often causes burrs on the inner wall of the keel during the drilling operation. This is because when the drill bit rotates and cuts at high speed, the keel material undergoes local plastic deformation and fracture under the action of strong stress, thereby forming irregular burrs on the edge of the hole.

[0004] First of all, sharp burrs can easily injure operators and increase operational risks. In terms of functionality and durability, burrs reduce the contact area between the keel and the connecting parts, reducing the fastening effect, thereby affecting the overall stability and sealing of the curtain wall. In the long run, it will also aggravate wear, leading to loose connections, water seepage and other problems, shortening the service life of the curtain wall.

[0005] Secondly, it is particularly difficult to remove burrs, especially in the four corners of the keel due to the limited space. Traditional methods, such as adding telescopic trapezoidal blocks to the tool, can partially alleviate the problem, but the cost of installing trapezoidal blocks is high, they are easy to wear and complex to maintain. At the same time, after frequent use of the trapezoidal blocks, their bevel edges wear unevenly, which not only reduces the deburring effect, but also affects the punching accuracy and tool balance, thereby damaging the punching quality and work efficiency. Finally, when replacing the worn trapezoidal blocks, it is necessary to disassemble the components on both sides as a whole, which is time-consuming and labor-intensive, increasing maintenance costs and the risk of project delays.

[0006] Secondly, the existing curtain wall keel drilling device also faces the challenge of easy deformation of the keel during drilling operations. This is mainly because the curtain wall keel is usually designed to be long and widely uses aluminum alloy as the main material. Although aluminum alloy is light and strong, it has a significant deformation characteristic, that is, it is easy to change shape when subjected to external force. During the drilling process, due to the local high stress applied to the keel by the drill bit and the insufficient structural stability caused by the length of the keel itself, it is very easy to deform.

[0007] Traditional technology often uses a two-side clamping method to fix the keel in order to maintain its stability during drilling. However, this fixing method is powerless when dealing with the easy deformation characteristics of aluminum alloy keels, because when the keel is subjected to the stress applied by the drill bit, its natural deformation tendency is restricted by the clamping on both sides, resulting in the inability to release the stress evenly. As a result, the keel often undergoes local stress concentration and deformation between the clamping points or near the drilling area, which manifests as bending, twisting or expansion. This deformation not only affects the drilling precision and position accuracy, but also easily damages the overall structural strength of the keel. In the long run, the accumulation of deformation will cause the keel to become uneven and loose after installation, thereby affecting the overall stability and aesthetics of the curtain wall. In addition, local stress concentration will accelerate the fatigue damage of the keel and shorten its service life.

[0008] What is more serious is that since the deformation of the keel is often difficult to predict and control, it will also cause troubles to the subsequent installation work. For example, the deformation will cause the assembly gap between the keel and other components to be inconsistent, increasing the difficulty of installation and the workload of adjustment. At the same time, the deformed keel will also affect the sealing performance of the curtain wall, causing water seepage, air leakage and other problems, which will affect the use effect of the building.

[0009] To this end, the present invention proposes a curtain wall keel precise punching device. Summary of the invention

[0010] The object of the present invention is to provide a curtain wall keel precise punching device to solve the problems raised in the above background technology.

[0011] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a precise punching device for curtain wall keels, comprising a punching unit, wherein the output end of the punching unit is equipped with a punching tool, the interior of the punching tool is provided with a centrifugal grinding component for separating the residual material on the inner wall of the keel, and the bottom of the centrifugal grinding component is provided with a stress release component for increasing the natural deformation space of the keel; the centrifugal grinding component includes a plurality of bristles for separating the residual material on the inner wall of the keel to different degrees; the stress release component includes a plurality of turntables for releasing the deformation space of the keel.

[0012] Preferably, a clamping tool is fixedly connected to the bottom of the punching unit, and a machine platform is fixedly connected to the bottom of the clamping tool. The punching unit is electrically controlled to start and stop by an external controller.

[0013] Preferably, the centrifugal grinding assembly also includes two inner cavities, which are symmetrically opened on the outer surface of the punching tool, and the top inner walls of the inner cavities are installed with mounting plates, the tops of the bristles are fixedly connected to the bottom of the mounting plates, and the inner walls of each of the inner cavities are symmetrically opened with sliding grooves.

[0014] Preferably, each of the inner cavities is slidably connected to a first magnetic block, and a reset baffle is slidably connected to the interior of each of the inner cavities and directly above the first magnetic block. The middle portion of the reset baffle is recessed outward, and the top has a rounded transition. A connecting rod is fixedly connected between each reset baffle and the first magnetic block, and the first magnetic block and the reset baffle are both slidably connected to the inside of the slide groove, and a reset spring is fixedly connected between the first magnetic block and the bottom of the inner cavity.

[0015] Preferably, the stress release assembly also includes a plurality of nut plates, each two opposing nut plates form a group, the top of the clamping tool is symmetrically fixedly connected with protrusions, each group of nut plates is slidably connected to the outer surface of the protrusions on the top of the clamping tool, and the outer surface of each nut plate is linearly and equidistantly arranged and fixedly connected with a sliding shell.

[0016] Preferably, each of the sliding shells is slidably connected to a sliding block, each of the sliding blocks is provided with a rotating hole, the turntables are rotatably connected to the rotating hole, driving motors are installed on both sides of the outer surface of the nut plate, the driving motors are electrically controlled to start and stop by an external controller, the output shafts of the driving motors are fixedly connected to an eccentric shaft, and the eccentric shafts pass through and are fixedly connected to the outer surface of the turntable.

[0017] Preferably, each sliding block is fixedly connected to a clamping block on one side away from the sliding shell, the clamping block located in the middle is arranged to be trapezoidal, and the shapes of the clamping blocks located on both sides of the middle are adapted to the shape of the clamping block located in the middle.

[0018] Preferably, the clamping blocks are all of split design, that is, the middle part of each clamping block is vacant, while the upper and lower ends are fixedly connected to the sliding block.

[0019] Preferably, a storage groove is provided on the top of the clamping tool, and a second magnetic block is fixedly connected to the inside of the storage groove. The magnetic properties of the second magnetic block are opposite to those of the first magnetic block. A baffle is fixedly connected to the outer surface of the storage groove by bolts, and the second magnetic block and the first magnetic block are both made of neodymium iron boron magnets.

[0020] Preferably, the turntable located in the middle is coaxially arranged with the eccentric shaft, while the turntable away from the middle, that is, the connection between the turntable and the eccentric shaft, is gradually offset.

[0021] Preferably, the machine consists of a shell, a vertical lifting hydraulic cylinder, a tool rotating power shaft, a tool rotating motor and a pneumatic chuck. The shell is fixedly connected to the top of the machine, the vertical lifting hydraulic cylinder is fixedly connected to the top of the shell, the output end of the vertical lifting hydraulic cylinder is fixedly connected to the outer surface of the tool rotating motor, the pneumatic chuck is fixedly connected to the outer surface of the tool rotating motor, and the pneumatic chuck is concentric with the output shaft of the tool rotating motor, the tool rotating power shaft is fixedly connected to the output shaft of the tool rotating motor, and the tool rotating power shaft is rotatably connected to the inside of the pneumatic chuck.

[0022] Preferably, the clamping tool consists of a base, a bidirectional screw and a handwheel, the base is fixedly connected to the top of the machine, the bidirectional screw is rotatably connected to the inside of the base, and the handwheel is fixedly connected to the outer surface of the bidirectional screw.

[0023] Preferably, the punching unit, the machine platform, the punching tool, and the clamping tool are all made of stainless steel, and the remaining centrifugal grinding component parts except the second magnetic block and the first magnetic block are also made of stainless steel.

[0024] Compared with the prior art, the beneficial effects of the present invention are: 1. While the punching tool rotates, the built-in bristles automatically adhere to the inner wall and bottom of the keel under the action of centrifugal force, so as to accurately and efficiently remove the excess material and burrs generated in the drilling process. This instant cleaning mechanism not only ensures the smoothness of the hole mouth, but also greatly reduces the need for subsequent manual deburring, thereby improving work safety and reducing operational risks. In addition, since the bristles are evenly stressed, their wear is more consistent, which helps to maintain the accuracy of the punching and the balance of the tool, ensuring the stability of the punching quality. More importantly, the bristles can be replaced easily and quickly without the need to disassemble the components on both sides as a whole, effectively reducing maintenance costs and time, and improving work efficiency.

[0025] Compared with the traditional method of adding telescopic trapezoidal blocks, firstly, the contact between the bristles and the inner wall of the keel is more delicate and comprehensive, which can deeply remove the tiny burrs and residual materials on the edge of the hole, avoiding the poor deburring effect caused by uneven wear of the bevel edge of the trapezoidal block. Secondly, the bristles work under the dual restrictions of the reset baffle and the first magnetic block, ensuring that the residual materials in different positions are removed to different degrees, further improving the cleaning effect. Furthermore, from the perspective of cost and maintenance, the replacement cost of the bristles is much lower than that of the trapezoidal blocks, and the replacement process is simple and quick, without complicated disassembly, which greatly reduces the difficulty and cost of maintenance. Finally, since the imbalance problem of the trapezoidal blocks after frequent use is avoided, the centrifugal grinding assembly helps to improve the drilling accuracy and work efficiency, and reduces the drilling quality problems and project delay risks caused by tool imbalance.

[0026] Wherein: through the linkage of magnetic force and the first magnetic block, the first magnetic block and the reset baffle automatically adjust the exposed length of the bristles, ensuring that the bristles can contact and remove the residual material and burrs on the hole wall in the best state at different stages of drilling.

[0027] Among them: because the interior of the reset baffle is concave outward and the edge transition is rounded, when the punching tool rises, the bristles can smoothly return to their original positions along the inner wall trajectory of the reset baffle, avoiding damage caused by friction or jamming.

[0028] Among them: because the bristles fit the hole wall evenly, they can reduce the deviation of the punching tool caused by vibration or uneven surface during rotation. This dynamic and real-time balance adjustment helps the tool move more stably along the predetermined trajectory, thereby improving the movement accuracy.

[0029] 2. When the operator operates the clamping tool, several of them can evenly clamp the keel to ensure sufficient support in the initial stage of drilling. As the drilling tool continues to descend, the eccentric shaft rotates so that the turntable can drive the sliding blocks and clamping blocks on both sides to move backward gradually. This dynamic adjustment process not only maintains the stability of the middle part of the keel, but also releases the space on both sides, allowing the keel to have a certain amount of natural deformation space when subjected to local high stress. Therefore, it effectively alleviates the bending, twisting or expansion of the keel due to stress concentration, and also improves the drilling accuracy and position accuracy, ensuring the flatness and structural strength of the keel after installation.

[0030] Compared with the traditional two-side clamping fixing method, first of all, in dealing with the easy deformation characteristics of aluminum alloy keels, the traditional clamping method often restricts the natural deformation of the keel, resulting in stress concentration and local deformation. The stress release component releases space so that the keel can have appropriate deformation space when subjected to external force, thereby effectively dispersing stress and reducing the occurrence of deformation. From the perspective of installation efficiency and building use effect, the stress release component reduces the installation difficulty and adjustment workload by reducing problems such as keel deformation and inconsistent assembly gaps, thereby improving installation efficiency.

[0031] Among them: the trapezoidal design of the clamping block makes the clamping force more evenly distributed on the keel, effectively avoiding local stress concentration, and the split structure allows each clamping block to be adjusted independently, better adapting to the slight deformation of the keel during the drilling process, and further reducing the impact of deformation on drilling accuracy.

[0032] Among them: when the eccentric shaft rotates, the turntable can push the sliding block and the clamping block to move backward at different speeds, so that the clamping block closer to the middle moves backward less. Further, the clamping block provides a larger deformation space for both sides while maintaining the stability of the middle part of the keel. This differentiated adjustment strategy effectively avoids excessive deformation of the keel during the drilling process.

[0033] Among them: Due to the lack of a rigid fixed relationship between the stress release component and the clamping fixture, this design reduces the fixed bends, making it difficult for the remaining material splashes generated during the drilling process to gather in the dead corners, thereby reducing the difficulty and time of the cleaning work. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a front three-dimensional schematic diagram of the main structure of the present invention.

[0035] Figure 2 It is a rear perspective schematic diagram of the main structure of the present invention.

[0036] Figure 3 For the present invention Figure 2 Enlarged three-dimensional schematic diagram of the structure at point A in the middle.

[0037] Figure 4 For the present invention Figure 2 Enlarged three-dimensional schematic diagram of the structure at point B in the middle.

[0038] Figure 5 For the present invention Figure 4 Enlarged three-dimensional schematic diagram of the structure at point C in the middle.

[0039] Figure 6 For the present invention Figure 4 Enlarged three-dimensional schematic diagram of the structure at point D in the middle.

[0040] Figure 7 It is a partially cutaway stereoscopic schematic diagram of the main structure of the present invention.

[0041] Figure 8 For the present invention Figure 7 Enlarged three-dimensional schematic diagram of the structure at E in the middle.

[0042] Fig. 9 It is a partial cross-sectional stereoscopic schematic diagram of the stress relief component of the present invention.

[0043] Fig.10 For the present invention Fig. 9 Enlarged three-dimensional schematic diagram of the structure at F in the middle.

[0044] In the figure: 1. Punching unit; 2. Machine table; 3. Punching tool.

[0045] 4. Centrifugal grinding assembly; 41. Inner cavity; 42. Mounting plate; 43. Bristles; 44. Slide groove; 45. First magnetic block; 46. Reset baffle; 47. Connecting rod; 48. Reset spring; 49. Second magnetic block.

[0046] 5. Clamping tooling.

[0047] 6. Stress relief assembly; 61. Nut plate; 62. Sliding shell; 63. Sliding block; 64. Turntable; 65. Eccentric shaft; 66. Driving motor; 67. Clamping block. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] See also Figures 1 to 10 The present invention provides an embodiment: a precise punching device for a curtain wall keel, comprising a punching unit 1, wherein the output end of the punching unit 1 is equipped with a punching tool 3, wherein the inside of the punching tool 3 is provided with a centrifugal grinding component 4 for separating the residual material on the inner wall of the keel, and the bottom of the centrifugal grinding component 4 is provided with a stress release component 6 for increasing the natural deformation space of the keel; the centrifugal grinding component 4 includes a plurality of bristles 43 for separating the residual material on the inner wall of the keel to different degrees; the stress release component 6 includes a plurality of turntables 64 for releasing the deformation space of the keel.

[0050] The bottom of the punching unit 1 is fixedly connected with a clamping tool 5 , and the bottom of the clamping tool 5 is fixedly connected with the machine platform 2 . The punching unit 1 is electrically controlled to start and stop by an external controller.

[0051] The centrifugal grinding assembly 4 also includes two inner cavities 41, which are symmetrically opened on the outer surface of the punching tool 3. The top inner walls of the inner cavities 41 are installed with mounting plates 42, and the tops of the bristles 43 are fixedly connected to the bottom of the mounting plates 42. The inner walls of each inner cavity 41 are symmetrically opened with slide grooves 44.

[0052] A first magnetic block 45 is slidably connected inside each inner cavity 41, a reset baffle 46 is slidably connected inside each inner cavity 41 and directly above the first magnetic block 45, a connecting rod 47 is fixedly connected between each reset baffle 46 and the first magnetic block 45, the first magnetic block 45 and the reset baffle 46 are slidably connected inside the slide groove 44, and a reset spring 48 is fixedly connected between the first magnetic block 45 and the bottom of the inner cavity 41.

[0053] The stress release assembly 6 also includes a plurality of nut plates 61, each two opposing nut plates 61 form a group, the top of the clamping fixture 5 is symmetrically fixedly connected with convex strips, each group of nut plates 61 is slidably connected to the outer surface of the convex strips at the top of the clamping fixture 5, and the outer surface of each nut plate 61 is linearly and equidistantly arranged and fixedly connected with a sliding shell 62.

[0054] Each sliding shell 62 is slidably connected to a sliding block 63, each sliding block 63 is provided with a rotating hole, and a turntable 64 is rotatably connected to the inside of the rotating hole. Drive motors 66 are installed on both sides of the outer surface of the nut plate 61. The drive motors 66 are electrically controlled to start and stop by an external controller. The output shaft of the drive motor 66 is fixedly connected to an eccentric shaft 65, and the eccentric shaft 65 passes through and is fixedly connected to the outer surface of the turntable 64.

[0055] A clamping block 67 is fixedly connected to one side of each sliding block 63 away from the sliding shell 62. The clamping block 67 in the middle is set to be trapezoidal, and the shapes of the clamping blocks 67 on both sides of the middle are adapted to the shape of the clamping block 67 in the middle.

[0056] The clamping blocks 67 are all split-body designs, that is, the middle part of each clamping block 67 is vacant, while the upper and lower ends are fixedly connected to the sliding block 63 .

[0057] A storage groove is provided on the top of the clamping tool 5, and a second magnetic block 49 is fixedly connected inside the storage groove. The magnetism of the second magnetic block 49 is opposite to that of the first magnetic block 45. A baffle is fixedly connected to the outer surface of the storage groove by bolts. Both the second magnetic block 49 and the first magnetic block 45 are made of neodymium iron boron magnets.

[0058] The rotating disk 64 in the middle is coaxially arranged with the eccentric shaft 65 , while the rotating disk 64 away from the middle, that is, the connection between the rotating disk 64 and the eccentric shaft 65 is gradually offset.

[0059] The machine platform 2 is composed of a casing, a vertical lifting hydraulic cylinder, a tool rotating power shaft, a tool rotating motor and a pneumatic chuck. The casing is fixedly connected to the top of the machine platform 2, the vertical lifting hydraulic cylinder is fixedly connected to the top of the casing, the output end of the vertical lifting hydraulic cylinder is fixedly connected to the outer surface of the tool rotating motor, the pneumatic chuck is fixedly connected to the outer surface of the tool rotating motor, and the pneumatic chuck is concentric with the output shaft of the tool rotating motor, the tool rotating power shaft is fixedly connected to the output shaft of the tool rotating motor, and the tool rotating power shaft is rotatably connected to the inside of the pneumatic chuck.

[0060] The clamping tool 5 consists of a base, a bidirectional screw and a handwheel. The base is fixedly connected to the top of the machine platform 2, the bidirectional screw is rotatably connected to the inside of the base, and the handwheel is fixedly connected to the outer surface of the bidirectional screw.

[0061] The punching unit 1, the machine table 2, the punching tool 3, and the clamping tool 5 are all made of stainless steel. Except for the second magnetic block 49 and the first magnetic block 45, the other parts of the centrifugal grinding assembly 4 are also made of stainless steel, and the bristles 43 are made of ceramic fibers.

[0062] The nut plates 61 are threadedly connected to both ends of the bidirectional screw rod, the punching tool 3 is installed at the bottom of the tool rotating power shaft, and the punching tool 3 is rotatably connected to the inside of the pneumatic chuck.

[0063] The top of the casing is symmetrically mounted with a photoelectric module, which is electrically connected to an external controller.

[0064] In combination with the above-mentioned implementation, the working principle of the present invention is as follows: the following is the initial state: the reset spring 48 is not compressed, the first magnetic block 45 is located at the bottom of the bristles 43, the reset baffle 46 is located on the upper side of the bristles 43, the clamping blocks 67 are all on the same parallel line at this time, and the sliding blocks 63 are all located on the side of the sliding shell 62 away from the nut plate 61.

[0065] The following are the specific steps of the work: Among them, the fixing of the curtain wall keel: Figure 1 As shown, the operator first places the curtain wall keel on the top of the clamping tool 5 to ensure that the keel is in a stable position and aligned with the device. Then the operator turns the hand wheel, which drives the synchronous rotation of the bidirectional screw rod. With the cooperation of the threaded pair, the nut plates 61 at both ends of the bidirectional screw rod move to both sides of the keel center line. As the nut plate 61 gradually approaches, its surface clamping block 67 begins to contact the keel surface and gradually applies clamping force.

[0066] When the clamping block 67 firmly clamps the curtain wall keel, the operator can release the hand wheel.

[0067] Among them, the curtain wall keel is punched: Figure 1 to Figure 2 As shown, after the keel is clamped and fixed at a preset position by the clamping tool 5 and the clamping block 67, the operator electrically controls the punching unit 1 through an external controller to start the punching operation.

[0068] Specifically, the vertical lifting hydraulic cylinder responds quickly after receiving the control signal, and its output end pushes the tool rotation motor and the tool rotation power shaft connected to it to descend smoothly in the vertical direction. In this process, the pneumatic chuck cooperates closely with the tool rotation power shaft to ensure the stability and accuracy of power transmission. As the tool rotation motor starts, its output shaft drives the tool rotation power shaft and the punching tool 3 installed at the bottom to rotate at high speed. While the punching tool 3 rotates, the vertical lifting hydraulic cylinder continues to push, so that the punching tool 3 gradually approaches and penetrates the keel, and then the machine 2 will return to the initial workstation again according to the above steps.

[0069] Among them, the removal of curtain wall keel hole wall and panel wall surplus material: Figure 2 , Figures 4 to 6 as well as Figure 7 and Figure 8As shown, in the above-mentioned process of drilling holes in the curtain wall keel, the punching tool 3 descends along a preset trajectory driven by the vertical lifting hydraulic cylinder, and when preparing to perform the drilling operation on the keel, the punching tool 3 is also driven to rotate by the rotating power shaft of the tool, and then a plurality of bristles 43 fixedly connected to the bottom of the mounting plate 42 are subjected to the centrifugal force of the rotation and have a tendency to move outward, but in the initial stage the bristles 43 are effectively blocked by the first magnetic block 45 slidably connected to the inside of the inner cavity 41, so that the bristles 43 do not move outside the inner cavity 41 at this time.

[0070] As the punching tool 3 continues to descend, the punching tool 3 will continuously generate burrs on the hole wall, residues and other waste materials during the punching process.

[0071] At this time, the first magnetic block 45 gradually approaches the second magnetic block 49 located in the storage slot at the top of the clamping tool 5, and then the first magnetic block 45 begins to slide downward along the slide slot 44 under the attraction of strong magnetic force. In this process, the first magnetic block 45 not only elastically compresses the reset spring 48 located below it, but also synchronously drives the movement of the reset baffle 46 through the fixedly connected connecting rod 47. As the first magnetic block 45 withdraws, the bottom of the bristles 43 originally blocked by it is released, and the reset baffle 46 moves to the lower side of the bristles 43, forming a posture that allows the bristles 43 to bend. Then the reset baffle 46 allows the bristles 43 to have its edge close to the hole wall while the punching tool 3 rotates to punch holes, and uses its own high wear resistance and flexibility to effectively peel off and remove burrs and residues on the hole wall, and then the bristles 43 remove the residual material on the hole wall, which can reduce subsequent cleaning work and improve overall operating efficiency.

[0072] When the punching tool 3 completely penetrates the keel, the first magnetic block 45 moves closer to the second magnetic block 49 and is more strongly attracted by the magnetic force, thereby driving the reset baffle 46 to continue moving. At this time, the bottom of the bristles 43 is no longer blocked, and its edge rotates parallel to the board wall under the action of centrifugal force.

[0073] Since the keel is pushed and rotated by the punching tool 3, it is squeezed and deformed, thereby forming burr edges of different heights at the bottom of the board wall, and then the bristles 43 will finely grind the burr edges of different heights on the inner wall of the keel.

[0074] As the punching operation is completed, the punching tool 3 begins to rise driven by the vertical lifting hydraulic cylinder. During this process, the reset spring 48 gradually stretches due to its elastic restoring force, and pushes the first magnetic block 45 and the reset baffle 46 to slide in the opposite direction along the slide groove 44 until they return to the initial state.

[0075] Since the middle part of the reset baffle 46 is designed with an outwardly concave structure and the edge is transitioned with a rounded corner, the bristles 43 can be cleverly bent during the movement and guided by the rounded corners to re-enter the inner cavity 41. Therefore, the movement of the reset baffle 46 realizes the automatic resetting of the bristles 43 and avoids the confusion and damage caused by high-speed rotation, thereby ensuring the continuous and stable operation of the centrifugal grinding assembly 4.

[0076] Among them, the deformation space of the curtain wall keel is released: Figure 2 and Figure 3 as well as Figures 7 to 10 As shown, in the process of the punching tool 3 drilling holes in the keel, when the punching tool 3 starts to descend under the drive of the vertical lifting hydraulic cylinder and is ready to drill holes in the keel, the photoelectric module installed on the top of the shell monitors the moving distance and speed of the punching tool 3 in real time. Once the punching tool 3 starts to move, the photoelectric module will send an electrical signal to the external controller, and the external controller will electrically control the drive motor 66 to start, and its output shaft will rotate accordingly.

[0077] The start of the driving motor 66 drives the eccentric shaft 65 fixedly connected thereto to rotate synchronously. Since the turntables 64 on both sides are eccentrically arranged relative to the eccentric shaft 65, and the sliding block 63 is restricted by the sliding shell 62 and can only move in a linear direction, when the turntable 64 rotates, the eccentric effect is utilized to drive the sliding block 63 to gradually move toward the inside of the sliding shell 62. During this process, the sliding block 63 drives the clamping block 67 thereon to move synchronously, so that the clamping blocks 67 on both sides gradually move away from the surface of the keel, reserving space for the deformation of the keel.

[0078] Since the eccentricity of each turntable 64 is different, there is a difference in the moving away tendency of the clamping blocks 67 on both sides, that is, the clamping blocks 67 close to the middle move away relatively slowly, while the clamping blocks 67 away from the middle move away quickly, forming a gradual clamping release effect, thereby effectively avoiding the stress concentration problem caused by excessive clamping force during the drilling process of the keel, and reducing the risk of deformation or cracking of the keel.

[0079] As the punching tool 3 continues to descend and penetrates into the interior of the keel, the downward pressure on the keel from the punching tool 3 gradually increases. At the same time, due to the gradual withdrawal of the clamping block 67, the clamping force on both sides of the keel gradually decreases, forming a dynamic force balance process. This gradually decreasing clamping force area design helps the keel to release the deformation space caused by the internal stress concentration of the material during the punching process, reducing the risk of keel deformation or cracking due to excessive clamping. In addition, the split clamping block 67 and the trapezoidal surface design further enhance the flexibility and adaptability of the clamping component, so that it can maintain good contact and clamping effect with the keel surface at different positions and angles.

[0080] When the punching tool 3 completes the punching operation and begins to rise and withdraw, the photoelectric module sends a signal to the external controller again to control the drive motor 66 to rotate in the opposite direction. As the drive motor 66 rotates, the eccentric shaft 65 drives the turntable 64 to rotate in the opposite direction, and then pulls the sliding block 63 and the clamping block 67 back to the initial clamping position through the eccentric effect. In this process, the two sides of the keel are again subjected to the clamping force of the clamping block 67, ensuring the stability and integrity of the keel structure. At this time, since the punching operation has been completed and the deformation space of the keel has been released, restoring the clamping force again will not only not cause additional burden on the keel, but will help to restore and fix its shape.

[0081] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0082] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A curtain wall keel precision punching device, comprising a punching unit (1), wherein the output end of the punching unit (1) is equipped with a punching tool (3), and the bottom of the punching unit (1) is fixedly connected with a clamping tool (5), characterized in that: The punching tool (3) is provided with a centrifugal grinding component (4) for separating the residual material on the inner wall of the keel, and the bottom of the centrifugal grinding component (4) is provided with a stress release component (6) for increasing the natural deformation space of the keel; the centrifugal grinding component (4) includes a plurality of bristles (43) for separating the residual material on the inner wall of the keel to different degrees; The stress release assembly (6) comprises a plurality of rotating disks (64) for releasing the keel deformation space; The centrifugal grinding assembly (4) further comprises two inner chambers (41), wherein the two inner chambers (41) are symmetrically opened on the outer surface of the punching tool (3), the top inner walls of the inner chambers (41) are both installed with mounting plates (42), the tops of the bristles (43) are fixedly connected to the bottom of the mounting plates (42), the inner walls of each inner chamber (41) are symmetrically opened with sliding grooves (44), each inner chamber (41) is slidably connected with a first magnetic block (45), each inner chamber (41) is slidably connected with a reset baffle (46) located directly above the first magnetic block (45), each reset baffle (46) is fixedly connected with the first magnetic block (45), a connecting rod (47) is fixedly connected between each reset baffle (46) and the first magnetic block (45), the first magnetic block (45) and the reset baffle (46) are both slidably connected inside the sliding groove (44), and a reset spring (48) is fixedly connected between the first magnetic block (45) and the bottom of the inner chamber (41); The stress release assembly (6) further comprises a plurality of nut plates (61), wherein each two opposing nut plates (61) form a group, the top of the clamping fixture (5) is symmetrically fixedly connected with a convex strip, each group of the nut plates (61) is slidably connected to the outer surface of the convex strip on the top of the clamping fixture (5), the outer surface of each nut plate (61) is linearly and equidistantly arranged and fixedly connected with a sliding shell (62), each sliding shell (62) is slidably connected with a sliding block (63) inside, each sliding block (63) is provided with a rotating hole inside, and the rotating disk (64) is rotatably connected to the rotating hole, and driving motors (66) are installed on both sides of the outer surface of the nut plates (61), and the driving motors (66) are electrically controlled to start and stop by an external controller, and the output shaft of the driving motor (66) is fixedly connected with an eccentric shaft (65), and the eccentric shaft (65) passes through and is fixedly connected to the outer surface of the rotating disk (64).

2. The curtain wall keel precise punching device according to claim 1 is characterized in that: The bottom of the clamping tool (5) is fixedly connected to the machine platform (2), and the punching unit (1) is electrically controlled to start and stop by an external controller.

3. The curtain wall keel precision punching device according to claim 1 is characterized in that: A clamping block (67) is fixedly connected to one side of each sliding block (63) away from the sliding shell (62); the clamping block (67) located in the middle is arranged in a trapezoidal shape; and the shapes of the clamping blocks (67) located on both sides of the middle are adapted to the shape of the clamping block (67) located in the middle.

4. The curtain wall keel precise punching device according to claim 3 is characterized in that: The clamping blocks (67) are all of split design, that is, the middle part of each clamping block (67) is vacant, while the upper and lower ends are fixedly connected to the sliding block (63).

5. The curtain wall keel precise punching device according to claim 1, characterized in that: A storage groove is provided on the top of the clamping tool (5), and a second magnetic block (49) is fixedly connected inside the storage groove. The magnetic properties of the second magnetic block (49) are opposite to those of the first magnetic block (45).

6. The curtain wall keel precise punching device according to claim 1, characterized in that: The rotating disk (64) located in the middle is coaxially arranged with the eccentric shaft (65), while the rotating disk (64) away from the middle is gradually offset at its connection with the eccentric shaft (65).

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