A precise intelligent sawing device for specific parts of a steel structure

Abstract

The application discloses a kind of steel structure specific site precision intelligent saw cutting device, including workbench, cutting machine;Still including guide assembly, positioning assembly and cleaning assembly, the cutting machine is fixedly installed in workbench right side, the guide assembly is slidably installed on workbench upper end surface, the positioning assembly is installed in workbench left side, the cleaning assembly is installed in workbench right side, guide assembly guides workpiece to move to specified position, the positioning assembly determines workpiece position after cutting machine cuts workpiece, the cleaning assembly is used to clean guide assembly and the contact part of workpiece.Solve the problem that fixture clamping is unstable due to coolant and metal chips in the cutting process in the prior art and the splashing coolant and metal chips can affect the measurement accuracy of laser ranging and infrared sensing.

Description

Technical Field

[0001] This invention relates to the field of metal cutting technology, and in particular to a precise intelligent sawing device for specific parts of steel structures. Background Technology

[0002] Steel structures are structures made of steel materials and are one of the main types of building structures. They are mainly composed of components such as steel beams and columns made of shaped steel and steel plates. Steel structure cutting is the core process in its manufacturing, and current technology primarily uses the continuous rotation of CNC cutting tools to physically cut the workpiece.

[0003] Existing cutting equipment operates according to a predetermined program, transporting the workpiece to a predetermined length for cutting. However, in actual production, friction often occurs between the fixture and the workpiece, causing deviations in the actual transport distance and resulting in a decrease in cutting accuracy.

[0004] Existing technologies use laser ranging, infrared sensing, and other methods to continuously feed back and calibrate the actual position of the workpiece until it reaches the predetermined position before cutting. This method of directly detecting the actual position of the workpiece greatly increases the cutting accuracy. At the same time, it can determine whether friction occurs based on the conveying distance of the preset fixture and the actual movement distance of the workpiece.

[0005] In order to ensure the temperature of the cutting tool is stable during the cutting process, existing technologies usually spray coolant to cool the saw blade. However, the high-speed rotating saw blade will bounce off the coolant and metal chips generated during the cutting process, causing them to adhere to the clamping mechanism and the surface of the workpiece. This can easily lead to unstable clamping of the fixture, affecting the surface finish of the workpiece and the cutting accuracy of the workpiece. Furthermore, the splashed coolant and metal chips can also affect the measurement of the workpiece by laser ranging and infrared sensing, which can also lead to the inability to accurately locate the workpiece position.

[0006] To address this issue, a precise intelligent sawing device for specific parts of steel structures is proposed. Summary of the Invention

[0007] The purpose of this invention is to solve the problem in the prior art that the coolant and metal debris during the cutting process cause unstable clamping of the fixture and that splashing coolant and metal debris affect the measurement accuracy of laser ranging and infrared sensing. Therefore, this invention proposes a precise intelligent sawing device for specific parts of steel structures.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a precision intelligent sawing device for specific parts of steel structures, including a workbench, a cutting machine, a guiding component, a positioning component, and a cleaning component. The cutting machine is fixedly installed on the right side of the workbench, the guiding component is slidably installed on the upper surface of the workbench, the positioning component is installed on the left side of the workbench, and the cleaning component is installed on the right side of the workbench. The guiding component guides the workpiece to a designated position, the positioning component determines the position of the workpiece, and the cutting machine cuts the workpiece. The cleaning component is used to clean the part in contact between the guiding component and the workpiece.

[0009] In the above scheme, the guide component will first clamp the workpiece and guide it to move forward. During this process, the cleaning component assists the guide component in clamping the workpiece. When the workpiece reaches the predetermined position, the positioning component detects whether the guide component has delivered the workpiece to the predetermined position and determines whether there is a relative displacement between the workpiece and the guide component. At this time, the cutting machine cuts the workpiece, and the cleaning component blows air onto the cutting machine. After the cutting is completed, the guide component releases the workpiece and resets. At this time, the cleaning component blows air onto the surface of the workpiece through the guide component.

[0010] Preferably, the guiding assembly includes a front guide plate, a rear guide plate, a hydraulic telescopic rod, a fixing clamp, and a conveying roller. The worktable surface is provided with a sliding groove. The front guide plate and the rear guide plate are slidably installed in the sliding groove. A plurality of hydraulic telescopic rods are installed in a ring shape on the inner side of the front guide plate and the rear guide plate. The fixing clamp is installed at the end of the hydraulic telescopic rod. A plurality of conveying rollers are installed on the surface of the front guide plate and the rear guide plate.

[0011] In the above solution, the fixed clamp is spherically connected to the end of the hydraulic telescopic rod. The fixed clamp can rotate freely relative to the hydraulic telescopic rod. Multiple conveying rollers are rotatably mounted on the surfaces of the front and rear guide plates. An electric telescopic rod is installed at the lower end of the conveying rollers to assist in supporting the workpiece during the guiding process of the guiding assembly. During the resetting process of the front and rear guide plates, the workpiece is mainly supported by the conveying rollers. In this way, the problems of frequent changes in clamping tools and clamping methods when dealing with workpieces with different cross-sections are solved in the prior art, thereby improving the production rate and greatly saving manpower.

[0012] Preferably, the positioning component includes a scale grating, a grating reading head, and a protective plate. The scale grating is fixedly installed on the surface of the workbench, the grating reading head is fixedly installed on one side of the rear guide plate, and the protective plate is installed on the outside of the scale grating.

[0013] In the above scheme, during the feeding process, the front guide plate moves the workpiece forward under the drive of the drive assembly; the rear guide plate clamps the end of the workpiece with the fixed clamp via a hydraulic telescopic rod. The grating reading head moves synchronously with the workpiece and the rear guide plate, reading the displacement value in real time along the scale grating and feeding the position signal back to the controller. The controller synchronously acquires the drive displacement data of the front guide plate and judges whether there is abnormal relative slippage between the workpiece and the guide assembly by comparing the consistency of the two displacements, thus achieving closed-loop precise control of the cutting length. The protective plate adopts an accordion-style telescopic cover to shield the scale grating, preventing chips and cutting fluid from contaminating the grating surface and ensuring the measurement accuracy during long-term operation of the equipment. Since this scheme uses an indirect measurement method, it effectively solves the problems in existing technologies, such as the inaccuracy of direct workpiece measurement methods like laser ranging and infrared sensing, caused by splashed coolant and metal debris adhering to the workpiece.

[0014] Preferably, a rubber layer is fixedly installed on the surface of the fixing clip, a cavity is formed in the middle part of the rubber layer, and an air passage is formed on the outer side of the fixing clip, the air passage penetrating the rubber layer.

[0015] In existing technologies, since most clamping tools are made of rigid metal, relative friction between the clamping tool and the workpiece during clamping can cause scratches on both the clamping tool and the workpiece surface. In this solution, the rubber layer is directly attached to the workpiece surface during clamping, which can provide sufficient friction while preventing the metal clamp from causing indentations or damage to the workpiece surface. The internal cavity is connected to the external air passage through an air channel. When the cavity is drawn to form a negative pressure, an adsorption effect can be generated between the contact surface between the fixed clamp and the workpiece, increasing the clamping force of the workpiece during cutting, while reducing the violent vibration generated during workpiece cutting and preventing damage to the machine itself.

[0016] Preferably, the cleaning assembly includes a compressed air source, a vacuum generator, a ventilation valve, a main air pipe, and branch air pipes. The compressed air source is fixed on the right side of the workbench. The air inlet of the vacuum generator is connected to the compressed air source. The ventilation valve is slidably connected to the upper end of the vacuum generator, and the ventilation valve has a front air chamber and a rear air chamber inside. The main air pipe is connected to the upper end of the rear air chamber of the ventilation valve, and the branch air pipe is connected to the main air pipe and the air passage.

[0017] Existing technologies often cool saw blades by spraying coolant to ensure stable blade temperature. However, the high-speed rotation of the saw blade causes coolant and metal debris to splash, which adhere to the uncut workpiece. When the clamp holds the workpiece, the presence of metal debris and coolant on the contact surface reduces friction between the clamp and the workpiece, leading to relative displacement during tool movement. This not only reduces accuracy but also damages the clamp and workpiece due to the metal debris. In the above solution, during the guiding process, the main air pipe is connected to the vacuum chamber of the vacuum generator via a ventilation valve, creating negative pressure to firmly hold the workpiece. When the guiding component resets, the main air pipe is connected to the exhaust port of the vacuum generator via the ventilation valve, and high-speed gas flows through the main air pipe and branch pipes to the air passage, blowing air onto the workpiece surface to remove the attached metal debris and coolant, thus preventing damage to the clamp and workpiece.

[0018] Preferably, an exhaust pipe is installed at the upper end of the front air chamber, and an air nozzle is installed on the left side of the cutting machine, with the exhaust pipe connected to the air nozzle.

[0019] In the above scheme, when the air exchange valve is switched to the front air chamber conduction state, compressed air is sprayed out from the air nozzle through the exhaust pipe, forming an air curtain in the cutting area, which blows the high-temperature chips generated during the sawing process away from the positioning component and the guide plate slide, preventing chip accumulation from adversely affecting the accuracy.

[0020] Preferably, a movable assembly is installed between the front guide plate and the air exchange valve. The movable assembly includes a rack one, a support frame, a transmission gear, and a rack two. The rack one is installed on the right side of the front guide plate, the support frame is fixedly installed on the worktable, the transmission gear is installed on one side of the support frame, and the rack two is installed on one side of the air exchange valve. The rack one, the transmission gear, and the rack two cooperate with each other.

[0021] In the above scheme, the linear displacement of the front guide plate during feeding is driven by the rotation of the transmission gear through rack one, and the transmission gear then drives rack two and the air exchange valve to slide. The air circuit switching is achieved entirely by mechanical linkage, without the need to set up solenoid valves or sensors.

[0022] Preferably, a drive assembly is installed inside the worktable. The drive assembly includes a servo motor, a drive gear, a lead screw, and a slider. The servo motor is installed inside the worktable, the drive gear is installed at the end of the servo motor, the lead screw is installed in a slide groove, and the slider is fixedly installed at the lower end of the front guide plate.

[0023] In the above scheme, the servo motor drives the lead screw to rotate through the drive gear, and the lead screw drives the slider together with the front guide plate to make linear feed motion along the slide, providing a precise power source for feeding.

[0024] Compared with existing technologies, the advantages of this invention are: 1. This invention clamps and guides the workpiece to a predetermined position by setting up a guiding component. Multiple sets of hydraulic telescopic rods are arranged in a ring on the inner side of the front and rear guide plates, and a self-adaptive swinging fixed clamp is installed at the end of the hydraulic telescopic rods. When facing workpieces with different cross-sectional shapes, the extension amount of the ring-arranged hydraulic telescopic rods can be adjusted respectively, so that the fixed clamp can fit the workpiece surface from multiple directions, realizing reliable clamping of workpieces with irregular cross-sectional shapes. At the same time, the displacement of the front and rear guide plates during the feeding process is detected in real time by a scale grating, which can accurately obtain the actual movement distance of the workpiece and avoid positioning errors caused by factors such as workpiece slippage.

[0025] 2. This invention achieves the effects of protecting the workpiece and reducing vibration by setting a rubber layer on the surface of the fixed clamp. By setting the rubber layer and opening a cavity inside the rubber layer, the rubber layer acts as a flexible medium to directly contact the workpiece surface when clamping the workpiece, avoiding the metal jaws from causing indentations or scratches to the workpiece. At the same time, the high coefficient of friction of the rubber material increases the friction between the fixed clamp and the workpiece, preventing the workpiece from shifting position during the cutting process. In addition, the elastic deformation of the rubber layer can absorb the high-frequency vibration generated during the cutting process, reducing the damage of vibration to the positioning components and the cutting machine itself.

[0026] 3. This invention uses a cleaning component to assist the guide component in clamping the workpiece while simultaneously cleaning its surface. This cleaning component is connected to the cavity inside the rubber layer of the fixing clamp. Simultaneously, the feed and reset movements of the front guide plate are mechanically linked to the air valve via a rack and pinion transmission mechanism. When the guide component feeds forward, the air valve automatically switches to the main air pipe suction position, creating negative pressure in the cavity of the fixing clamp surface to remove debris and impurities from the workpiece contact surface. During cutting operations, the air valve switches to the main air pipe blowing position, and compressed air is ejected from the nozzle to form an air curtain, blowing metal chips away from the positioning component and the guide plate slide. When the guide component resets, the nozzle continues to blow away residual chips from the workpiece surface and the table, thus achieving fully automatic cleaning and solving the problem of metal chips remaining between the rubber layer and the workpiece, leading to insecure clamping or damage to the workpiece surface. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a precision intelligent sawing device for specific parts of a steel structure proposed in this invention. Figure 2 This is a schematic diagram of the left side of a precision intelligent sawing device for specific parts of a steel structure proposed in this invention; Figure 3 This is a schematic diagram of the front guide plate structure of a precision intelligent sawing device for specific parts of a steel structure proposed in this invention. Figure 4 This invention proposes a precise intelligent sawing device for specific parts of steel structures. Figure 1 Enlarged view of section A in the middle; Figure 5 This invention proposes a precise intelligent sawing device for specific parts of steel structures. Figure 4 Enlarged view of section B; Figure 6 This is a front view of a precision intelligent sawing device for specific parts of a steel structure proposed in this invention; Figure 7 This invention proposes a precise intelligent sawing device for specific parts of steel structures. Figure 6 Axonometric view of the cross-section of the CC section; Figure 8 This is a schematic diagram of the bottom structure of the ventilation valve of a precision intelligent sawing device for specific parts of a steel structure proposed in this invention. Figure 9 This is a schematic diagram of the clamping part of a precision intelligent sawing device for specific parts of a steel structure proposed in this invention; In the diagram: 1. Workbench; 2. Cutting machine; 3. Guiding assembly; 31. Front guide plate; 32. Rear guide plate; 33. Hydraulic telescopic rod; 34. Fixing clamp; 341. Rubber layer; 342. Cavity; 343. Air passage; 35. Conveyor roller; 36. Slide groove; 4. Positioning components; 41. Scale grating; 42. Grating reading head; 43. Protective plate; 5. Cleaning components; 51. Compressed air source; 52. Vacuum generator; 53. Air exchange valve; 531. Front air chamber; 532. Rear air chamber; 54. Main air pipe; 55. Branch air pipe; 56. Exhaust pipe; 57. Air nozzle; 6. Moving component; 61. Rack one; 62. Support frame; 63. Transmission gear; 64. Rack two; 7. Drive components; 71. Servo motor; 72. Drive gear; 73. Lead screw; 74. Slider. Detailed Implementation

[0028] The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0029] In the aforementioned precision intelligent sawing device for specific parts of a steel structure, the cutting machine 2 is positioned on the right side of the worktable 1, the guide assembly 3 is slidably mounted on the upper end of the worktable 1, the positioning assembly 4 is mounted on the left side of the worktable 1, and the cleaning assembly 5 is mounted on the right side of the worktable 1. During operation, the guide assembly 3 transports the workpiece to the designated position, the positioning assembly 4 determines the workpiece position, and then the cutting machine 2 saws the workpiece. The cleaning assembly 5 is used to clean the contact area between the guide assembly 3 and the workpiece to prevent debris from affecting subsequent clamping accuracy.

[0030] The guide component 3 will preferentially clamp the workpiece and guide it forward. During this process, the cleaning component 5 assists the guide component 3 in clamping the workpiece. When the workpiece reaches the predetermined position, the positioning component 4 detects whether the guide component 3 has delivered the workpiece to the predetermined position and determines whether there is a relative displacement between the workpiece and the guide component 3 to avoid deviation in the workpiece position. If a deviation occurs, fine adjustments are made according to the deviation to deliver the workpiece to the accurate position. If no deviation occurs, the cutting machine 2 cuts the workpiece, and the cleaning component 5 blows air onto the cutting machine 2. While cooling the cutting machine 2, it blows metal chips and coolant away from the worktable 1. After the cutting is completed, the guide component 3 releases the workpiece and resets. At this time, the cleaning component 5 blows air onto the surface of the workpiece through the guide component 3 to prevent metal chips from being trapped between the clamping surface of the guide component 3 and the surface of the workpiece when the guide component 3 re-clamps, thus damaging the workpiece and the surface of the guide component 3.

[0031] In the aforementioned precision intelligent sawing device for specific parts of a steel structure, the guiding component 3 includes a front guide plate 31, a rear guide plate 32, hydraulic telescopic rods 33, a fixing clamp 34, and a conveying roller 35. A groove 36 is provided on the surface of the worktable 1. The front guide plate 31 and the rear guide plate 32 are L-shaped, with one side slidingly installed within the groove 36 on the worktable 1, and the other side having a circular hole for guiding the workpiece. Multiple hydraulic telescopic rods 33 are arranged in a ring within the circular holes of the front guide plate 31 and the rear guide plate 32. Each hydraulic telescopic rod 33 is controlled by the same hydraulic control valve and can provide the same clamping force. The fixed clamp 34 is ball-jointed to the end of the hydraulic telescopic rod 33 and can rotate freely relative to the hydraulic telescopic rod 33. Multiple conveying rollers 35 are rotatably mounted on the front guide plate 31 and the rear guide plate 32. An electric telescopic rod is installed at the lower end of the conveying rollers 35 to assist in supporting the workpiece during the guiding process of the guiding assembly 3. During the resetting process of the front guide plate 31 and the rear guide plate 32, the workpiece is mainly supported by the conveying rollers 35.

[0032] It should be added that the front guide plate 31 and the rear guide plate 32 correspond to the front and rear ends of the workpiece, respectively. The fixed clamp 34 is driven by the ring-shaped hydraulic telescopic rod 33 to clamp the workpiece cross section from multiple directions, which can accommodate profiles with different cross-sectional shapes such as H-beams and I-beams. The conveyor roller 35 can rotate freely during the feeding stage, which is convenient for the workpiece to slide and adjust its position. During the cutting process, the conveyor roller 35 is locked by the brake and is in a fixed state.

[0033] In the aforementioned precision intelligent sawing device for specific parts of a steel structure, the positioning component 4 includes a scale grating 41, a grating reading head 42, and a protective plate 43. The scale grating 41 is fixedly installed on the surface of the worktable 1, the grating reading head 42 is fixedly installed on one side of the rear guide plate 32, and the protective plate 43 covers the outside of the scale grating 41. During the feeding process, the front guide plate 31 drives the workpiece forward under the drive of the drive component 7; the rear guide plate 32 drives the fixing clamp 34 to clamp the end of the workpiece through the hydraulic telescopic rod 33, and the clamping force is preset to make the maximum static friction force generated between the fixing clamp 34 and the workpiece greater than the sliding friction resistance between the rear guide plate 32 and the slide groove 36 of the worktable 1, thereby ensuring that the rear guide plate 32 can be dragged by the workpiece and move synchronously without relative sliding between them. Since the mass of the rear guide plate 32 and the coefficient of friction between it and the slide groove 36 are fixed values, its sliding resistance can be calculated in advance. Combined with the known coefficient of friction between the rubber layer 341 of the fixing clamp 34 and the workpiece material, the clamping force that meets the conditions can be set by adjusting the hydraulic pressure to ensure the reliability of synchronous follow-up. The grating reading head 42 moves synchronously with the workpiece and the rear guide plate 32, reads the displacement value in real time along the scale grating 41, and feeds the position signal back to the controller. The controller obtains the drive displacement data of the front guide plate 31 by reading the encoder of the servo motor 71. By comparing the consistency of the two displacements, it judges whether there is abnormal relative sliding between the workpiece and the guide assembly 3. If abnormal relative sliding occurs, it increases the pressure value of the hydraulic telescopic rod 33 and controls the servo motor 71 to drive the front guide plate 31 to move by the difference in displacement, and re-acquires and compares the data to make the workpiece reach the accurate position, realizing closed-loop precise control of the cutting length. The protective plate 43 adopts an accordion-style telescopic cover to shield the scale grating 41, prevents chips and cutting fluid from contaminating the grating surface, and ensures the measurement accuracy of the equipment during long-term operation.

[0034] In the aforementioned precision intelligent sawing device for specific parts of a steel structure, a rubber layer 341 is fixedly provided on the surface of the clamp 34. A cavity 342 is formed in the middle of the rubber layer 341, and the outer wall of the cavity 342 is also made of rubber. An air passage 343 is formed on the outer side of the clamp 34, extending into the interior of the rubber layer 341. When clamping the workpiece, the rubber layer 341 directly adheres to the workpiece surface, providing sufficient friction while preventing the metal clamp from causing indentations or damage to the workpiece surface. The internal cavity 342 is connected to the external air passage through the air passage 343. When the cavity 342 is suctioned to form a negative pressure, an adsorption effect can be generated between the contact surface between the clamp 34 and the workpiece, increasing the clamping force of the workpiece during cutting, while reducing the violent vibration generated during workpiece cutting and preventing damage to the machine itself.

[0035] In the aforementioned precision intelligent sawing device for specific parts of a steel structure, the cleaning component 5 includes a compressed air source 51, a vacuum generator 52, a ventilation valve 53, a main air pipe 54, and branch air pipes 55. The compressed air source 51 is fixed to the right side of the workbench 1. The air inlet of the vacuum generator 52 is connected to the compressed air source 51. The ventilation valve 53 is slidably mounted on the upper end of the vacuum generator 52, and a sealing gasket is installed between the ventilation valve 53 and the upper end of the vacuum generator 52 to prevent gas leakage during its sliding. The ventilation valve 53 is internally divided into two chambers: a front air chamber 531 and a rear air chamber 532. The main air pipe 54 is connected to the upper end of the rear air chamber 532 of the ventilation valve 53. The air pipe 55 connects the main air pipe 54 to the air passages 343 on each fixed clamp 34. The working principle of the vacuum generator 52 is to take in compressed air from the air inlet, and form a negative pressure by sweeping away the surrounding airflow through the high-speed airflow. The high-speed airflow is discharged through the exhaust port. During the guiding process, the main air pipe 54 is connected to the vacuum chamber of the vacuum generator 52 through the air exchange valve 53 to form a negative pressure and firmly suck up the workpiece. When the guiding component 3 is reset, the main air pipe 54 is connected to the exhaust port of the vacuum generator 52 through the air exchange valve 53. The high-speed gas passes through the main air pipe 54 and the branch air pipe 55 to the air passage 343 to blow air onto the surface of the workpiece to remove the attached metal debris and coolant.

[0036] It should be added that, in the aforementioned precision intelligent sawing device for specific parts of a steel structure, when the guide component 3 resets after cutting, the hydraulic telescopic rod 33 drives the fixed clamp 34 to retract a small preset distance away from the workpiece surface, creating a narrow gap between the rubber layer 341 of the fixed clamp 34 and the workpiece surface. At this time, the cleaning component 5 is in air blowing mode, and compressed air is ejected through the air nozzle 57. When the airflow passes through this narrow gap, the flow velocity increases and the air pressure rises, forming a high-speed air curtain in the contact area between the fixed clamp 34 and the workpiece. This effectively blows away residual debris adhering to the workpiece surface and the rubber layer 341, enhancing the cleaning effect. At the same time, since the fixed clamp 34 is movably connected to the end of the hydraulic telescopic rod 33 through a joint or ball joint structure, it can swing freely relative to the hydraulic telescopic rod 33 within a certain angle range. During the reset process, under the thrust of the airflow and its own gravity, the fixed clamp 34 can adaptively adjust its tilt posture, preparing for the next clamping action.

[0037] In the aforementioned precision intelligent sawing device for specific parts of a steel structure, an exhaust pipe 56 is installed at the upper end of the front air chamber 531, and an air nozzle 57 is installed on the left side of the cutting machine 2. The exhaust pipe 56 is connected to the air nozzle 57. When the air exchange valve 53 switches to the open state of the front air chamber 531, compressed air is ejected from the air nozzle 57 through the exhaust pipe 56, forming an air curtain in the cutting area. This blows the high-temperature chips generated during the sawing process away from the positioning component 4 and the guide plate slide, preventing chip accumulation from adversely affecting accuracy.

[0038] In the aforementioned precision intelligent sawing device for specific parts of a steel structure, a moving component 6 is provided between the front guide plate 31 and the air exchange valve 53. The moving component 6 includes a rack 61, a support frame 62, a transmission gear 63, and a rack 64. The rack 61 is installed on the right side of the front guide plate 31, the support frame 62 is fixed on the worktable 1, the transmission gear 63 is rotatably installed on one side of the support frame 62, and the rack 64 is installed on one side of the air exchange valve 53. The rack 61, transmission gear 63, and rack 64 mesh sequentially. The linear displacement of the front guide plate 31 during material feeding is achieved by the rack 61 driving the transmission gear 63 to rotate. The transmission gear 63 then drives the rack 64 and the air exchange valve 53 to slide. The air circuit switching is achieved entirely by mechanical linkage, without the need for solenoid valves or sensors. During the workpiece guiding stage, the main air pipe 54 is connected to the vacuum chamber of the vacuum generator 52 through the air exchange valve 53 to form a negative pressure and firmly suck up the workpiece. When the guiding component 3 is reset, the main air pipe 54 is connected to the exhaust port of the vacuum generator 52 through the air exchange valve 53. High-speed gas passes through the main air pipe 54 and the branch air pipe 55 to the air passage 343, blowing air onto the surface of the workpiece to remove the attached metal debris and coolant.

[0039] In the aforementioned precision intelligent sawing device for specific parts of a steel structure, a drive assembly 7 is installed inside the worktable 1. The drive assembly 7 includes a servo motor 71, a drive gear 72, a lead screw 73, and a slider 74. The servo motor 71 is installed inside the worktable 1, the drive gear 72 is installed at the output end of the servo motor 71, the lead screw 73 is installed in the slide groove 36, and the slider 74 is fixed to the lower end of the front guide plate 31. The servo motor 71 drives the lead screw 73 to rotate through the drive gear 72. The lead screw 73 drives the slider 74, together with the front guide plate 31, to make linear feed motion along the slide groove 36, providing a precise power source for material feeding.

[0040] In this invention, the guide component 3 will preferentially clamp the workpiece and guide it to move forward. When the workpiece reaches the predetermined position, the positioning component 4 will detect whether the guide component 3 has delivered the workpiece to the predetermined position and determine whether there is a relative displacement between the workpiece and the guide component 3. At this time, the cutting machine 2 will cut the workpiece, and the cleaning component 5 will blow air onto the cutting machine 2. While cooling the cutting machine 2, the metal chips and coolant will be blown away from the worktable 1. After the cutting is completed, the guide component 3 will release the workpiece and reset. At this time, the cleaning component 5 will blow air onto the surface of the workpiece through the guide component 3.

[0041] Specifically, the workpiece is hoisted from the outside and loaded onto the conveyor roller 35. The controller controls the hydraulic station to supply oil at a low pressure. The hydraulic telescopic rod 33 pushes the fixed clamp 34 from the circumferential direction to approach the workpiece and clamp it. After feeding begins, the servo motor 71 drives the lead screw 73 to rotate, which drives the front guide plate 31 to move forward along the slide 36 and move the workpiece. The rear guide plate 32 clamps the end of the workpiece with a preset clamping force. The grating reading head 42 reads the displacement value in real time along the scale grating 41 and feeds it back to the controller.

[0042] During the feeding process, the front guide plate 31 keeps the air exchange valve 53 in the open position of the rear air chamber 532 through the rack and pinion linkage mechanism. Compressed air generates negative pressure through the vacuum generator 52 and is transmitted to the cavity 342 of the rubber layer 341 of the fixed clamp 34 through the main air pipe 54, branch air pipe 55 and air passage 343. Negative pressure adsorption is formed on the clamping contact surface to clamp the workpiece. After positioning, the hydraulic system pressurizes, the fixed clamp 34 locks the workpiece, and the saw blade of the cutting machine 2 feeds to cut. The generated metal debris is blown away from the worktable 1 by the air curtain. After the cutting is completed, the saw blade retracts, and the hydraulic telescopic rod 33 drives the fixed clamp 34 to retract a small distance away from the workpiece, so that the rubber layer 341 and the surface of the workpiece form a narrow gap. The compressed air sprayed by the air nozzle 57 blows away the residual metal debris on the surface of the workpiece and the rubber layer 341. Then the drive assembly 7 drives the front guide plate 31 to reset, and the rear guide plate 32 is driven by an independent motor to reset along the slide rod. After all components are reset to zero, the next working cycle begins.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A precision intelligent sawing device for specific parts of a steel structure, comprising a workbench (1) and a cutting machine (2), characterized in that, It also includes a guide component (3), a positioning component (4), and a cleaning component (5). The cutting machine (2) is located on the right side of the workbench (1). The guide component (3) is installed on the upper end of the workbench (1). The positioning component (4) is installed on the left side of the workbench (1). The cleaning component (5) is installed on the right side of the workbench (1). The guide component (3) guides the workpiece to a designated position. After the positioning component (4) determines the position of the workpiece, the cutting machine (2) cuts the workpiece. The cleaning component (5) is used to clean the part of the guide component (3) that contacts the workpiece.

2. The precision intelligent sawing device for specific parts of a steel structure according to claim 1, characterized in that... The guiding assembly (3) includes a front guide plate (31), a rear guide plate (32), a hydraulic telescopic rod (33), a fixing clamp (34), and a conveying roller (35). The workbench (1) has a groove (36) on its surface. The front guide plate (31) and the rear guide plate (32) are slidably installed in the groove (36). Multiple hydraulic telescopic rods (33) are installed in a ring shape inside the front guide plate (31) and the rear guide plate (32). The fixing clamp (34) is installed at the end of the hydraulic telescopic rod (33). Multiple conveying rollers (35) are installed on the surface of the front guide plate (31) and the rear guide plate (32).

3. The precise intelligent sawing device for specific parts of a steel structure according to claim 2, characterized in that... The positioning component (4) includes a scale grating (41), a grating reading head (42), and a protective plate (43). The scale grating (41) is fixedly installed on the surface of the workbench (1), the grating reading head (42) is fixedly installed on one side of the rear guide plate (32), and the protective plate (43) is installed on the outside of the scale grating (41).

4. The precision intelligent sawing device for specific parts of a steel structure according to claim 3, characterized in that, A rubber layer (341) is fixedly installed on the surface of the fixing clip (34). A cavity (342) is opened in the middle part of the rubber layer (341). An air passage (343) is opened on the outside of the fixing clip (34). The air passage (343) penetrates the rubber layer (341).

5. A precision intelligent sawing device for specific parts of a steel structure according to claim 4, characterized in that, The cleaning assembly (5) includes a compressed air source (51), a vacuum generator (52), an air exchange valve (53), a main air pipe (54), and a branch air pipe (55). The compressed air source (51) is fixed on the right side of the workbench (1). The air inlet of the vacuum generator (52) is connected to the compressed air source (51). The air exchange valve (53) is slidably connected to the upper end of the vacuum generator (52). The air exchange valve (53) has a front air chamber (531) and a rear air chamber (532) inside. The main air pipe (54) is connected to the upper end of the rear air chamber (532) of the air exchange valve (53). The branch air pipe (55) is connected to the main air pipe (54) and the air passage (343).

6. The precise intelligent sawing device for specific parts of a steel structure according to claim 5, characterized in that, An exhaust pipe (56) is installed at the upper end of the front air chamber (531), and an air nozzle (57) is installed on the left side of the cutting machine (2). The exhaust pipe (56) is connected to the air nozzle (57).

7. A precision intelligent sawing device for specific parts of a steel structure according to claim 5, characterized in that, A moving assembly (6) is installed between the front guide plate (31) and the air exchange valve (53). The moving assembly (6) includes a rack (61), a support frame (62), a transmission gear (63), and a rack (64). The rack (61) is installed on the right side of the front guide plate (31). The support frame (62) is fixedly installed on the workbench (1). The transmission gear (63) is installed on one side of the support frame (62). The rack (64) is installed on one side of the air exchange valve (53). The rack (61), the transmission gear (63), and the rack (64) cooperate with each other.

8. A precision intelligent sawing device for specific parts of a steel structure according to claim 3, characterized in that, The workbench (1) is equipped with a drive assembly (7), which includes a servo motor (71), a drive gear (72), a lead screw (73), and a slider (74). The servo motor (71) is installed inside the workbench (1), the drive gear (72) is installed at the end of the servo motor (71), the lead screw (73) is installed in the slide groove (36), and the slider (74) is fixedly installed at the lower end of the front guide plate (31).

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