Titanium tube cutting and polishing device and method thereof

Abstract

The application discloses a titanium pipe cutting and polishing device and a method thereof, and belongs to the technical field of titanium pipe processing. The device is characterized in that a first axial slide rail and a second axial slide rail are arranged in parallel along a titanium pipe processing axis on a workbench of the device; a first clamping mechanism is fixed to one end of the workbench, and a second clamping mechanism is slidably arranged on the second axial slide rail, and titanium pipe fixing and cutting length adjustment are realized through double-end centering clamping; an integrated cutting and polishing unit is slidably arranged on the first axial slide rail and located between the two clamping mechanisms, a transverse moving slide rail is arranged at the top of a gantry mounting frame of the integrated cutting and polishing unit, a laser cutting mechanism and an end face polishing mechanism are integrally arranged on a moving block, and precise switching of a cutting and polishing station can be realized through transverse translation; a control unit uniformly controls the sequential connection of the mechanisms, and realizes fixed-length cutting and end face integrated processing of the titanium pipe under one-time clamping.

Description

Technical Field

[0001] This invention relates to the field of titanium tube processing technology, and more specifically, to a titanium tube cutting and grinding apparatus and method. Background Technology

[0002] Titanium and titanium alloy tubes are widely used in aerospace, petrochemical, medical device, and marine engineering fields due to their high specific strength, excellent corrosion resistance, and good biocompatibility. Length cutting and end-face deburring and grinding are key processes in the processing of finished titanium tubes; their processing accuracy and efficiency directly determine the assembly performance and manufacturing cost of the titanium tubes.

[0003] Currently, the industry mostly uses a split processing mode for cutting and grinding titanium tubes: first, the titanium tube is cut to a fixed length using laser tube cutting equipment, and then the cut titanium tube is transferred to chamfering or grinding equipment for secondary clamping to complete the deburring treatment of the end face. In this mode, the secondary clamping inevitably introduces positioning deviations, resulting in a decrease in the perpendicularity and coaxiality accuracy of the end face, making it difficult to meet the processing requirements of high-precision titanium tubes; at the same time, the process transfer and repeated clamping are time-consuming, resulting in low production efficiency, high labor costs, and the stability of processing quality is greatly affected by the operator's skill level.

[0004] While some existing pipe processing equipment attempts to integrate cutting and grinding functions, significant limitations remain: First, most integrated equipment uses a workpiece rotation processing principle, which is only suitable for processing short-sized pipes and cannot meet the fixed-length cutting requirements of long titanium pipes; second, the cutting and grinding mechanisms are mostly separate and independent layouts, requiring multi-axis linkage adjustment for station switching, resulting in a complex overall structure and difficulty in ensuring positioning accuracy after switching, easily leading to misalignment between the grinding end face and the cutting end face; third, the clamping and fixed-length structures have poor adaptability, making it difficult to quickly and flexibly adapt to the fixed-length processing requirements of titanium pipes of different lengths, resulting in insufficient equipment versatility.

[0005] In summary, existing titanium tube cutting and grinding equipment suffers from technical shortcomings, including difficulty in balancing processing accuracy and efficiency, complex switching structures for integrated equipment, and poor adaptability to long tubes, thus failing to meet the production demands of efficient and precise industrial-scale titanium tube processing. Therefore, we propose a titanium tube cutting and grinding device and method. Summary of the Invention

[0006] The purpose of this invention is to provide a titanium tube cutting and grinding device and method to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A titanium tube cutting and grinding device includes a worktable, on which a first clamping mechanism, a second clamping mechanism, an integrated cutting and grinding unit, and a control unit are provided; The worktable is provided with a first axial slide rail and a second axial slide rail, both of which are arranged parallel to the titanium tube processing axis. The first clamping mechanism is fixedly installed at one end of the worktable, and the second clamping mechanism is slidably mounted on the second axial slide rail. The clamping centers of the first clamping mechanism and the second clamping mechanism coincide with the titanium tube processing axis, and the second clamping mechanism can slide along the second axial slide rail. The integrated cutting and grinding unit is slidably mounted on the first axial slide rail and located between the first clamping mechanism and the second clamping mechanism; the integrated cutting and grinding unit includes a gantry mounting frame, a laser cutting mechanism and an end face grinding mechanism. A movable slide rail is provided on the top of the gantry mounting frame. The movable slide rail is perpendicular to the extension direction of the first axial slide rail. A movable block is slidably mounted on the movable slide rail. The laser cutting mechanism and the end face grinding mechanism are mounted on the movable block. The control unit is electrically connected to the first clamping mechanism, the second clamping mechanism, and the integrated cutting and grinding unit, respectively, and is used to control each mechanism to perform clamping and positioning, laser cutting, and end face grinding processes in sequence, so as to realize fixed-length cutting and end face integrated processing of titanium tubes in one clamping.

[0008] Preferably, a cylinder is also provided at the bottom of the movable block, a fixed plate is provided on the output shaft of the cylinder, and a plurality of limiting posts are provided on the top of the fixed plate. The limiting posts extend into the movable block and slide in cooperation with the movable block. The bottom of the fixed plate is equipped with a laser cutting head with a laser cutting mechanism, and the end face grinding mechanism is installed on one side of the laser cutting head on the fixed plate.

[0009] Preferably, the end face grinding mechanism includes a fixed frame, on which a pulley mechanism is mounted. A motor is provided on one side of the upper end of the fixed frame. The motor is connected to the driving wheel of the pulley mechanism. Grinding wheels are arranged opposite to each other on both sides of the driven wheel of the pulley mechanism. The central shaft of the grinding wheel passes through the fixed frame and is connected to the driven wheel.

[0010] Preferably, a drive assembly is provided inside the movable slide rail, which is a motor and a ball screw pair, and the movable block is threadedly connected to the ball screw pair. Drive assembly two and drive assembly three are respectively provided in the first axial slide rail and the second axial slide rail; drive assembly two is connected to the gantry mounting bracket, and drive assembly three is connected to the second clamping mechanism.

[0011] Preferably, the second clamping mechanism is provided with support frames on both sides, and the support frames are connected to the drive assembly.

[0012] Preferably, the gantry mounting frame is also equipped with an air blowing and chip removal assembly, which includes at least two sets of nozzles. One set of nozzles is aimed at the laser cutting station to spray inert protective gas and blow away the cutting slag; the other set of nozzles is aimed at the grinding station to blow away the titanium chips generated during grinding.

[0013] Preferably, both the first clamping mechanism and the second clamping mechanism are pneumatic three-jaw chucks, and the inner side of the jaws of the three-jaw chuck is fitted with a replaceable copper bushing; an axial scale is provided on the side of the second axial slide rail, and a locking component is provided at the bottom of the second clamping mechanism for locking and positioning after sliding to the preset cutting length position.

[0014] Preferably, the grinding wheel is sintered from green silicon carbide abrasive; an elastic buffer is provided between the fixing frame and the central shaft of the grinding wheel to allow the grinding wheel to abut against the end face of the titanium tube with floating pressure, adaptively compensating for the amount of abrasive wear.

[0015] Preferably, a wet chip collection tank is provided below the moving section of the worktable corresponding to the integrated cutting and grinding unit. The wet chip collection tank contains cooling cutting fluid and has a removable chip filter screen. After the titanium chips generated by cutting and grinding fall into the chip collection tank, they are submerged below the surface of the cutting fluid to prevent the titanium chips from oxidizing and spontaneously combusting.

[0016] A method for cutting and grinding titanium tubes, implemented using the aforementioned titanium tube cutting and grinding apparatus, includes the following steps: S1. Clamping and length setting: Insert the titanium tube sequentially into the gantry mounting frame of the second clamping mechanism and the integrated cutting and grinding unit along the axial direction, with the end extending to the first clamping mechanism; drive the second clamping mechanism to slide along the second axial slide rail to the preset cutting length position and lock it, and simultaneously start the first clamping mechanism and the second clamping mechanism to perform double-end centering clamping on the titanium tube; S2, Laser Cutting: The control unit drives the integrated cutting and grinding unit to move along the first axial slide rail to the preset cutting position. The drive component drives the moving block to move laterally, so that the laser cutting mechanism is aligned with the titanium tube processing position. The cylinder drives the fixed plate to feed the laser cutting head to the set cutting distance, and starts the laser cutting mechanism to complete the fixed-length cutting of the titanium tube in conjunction with the axial movement. After the cutting is completed, the cylinder drives the laser cutting head to retract. S3. End face grinding: Drive component one drives the moving block to move laterally, so that the end face grinding mechanism is aligned with the cut end face of the titanium tube; the cylinder drives the fixed plate to feed the grinding wheel to the end face of the titanium tube; the start motor one drives the double grinding wheel to rotate through the pulley mechanism, and grinds and deburrs the inner and outer edges of the end face of the titanium tube simultaneously; after grinding is completed, the cylinder drives the end face grinding mechanism to retract. S4. Reset and unloading: The integrated cutting and grinding unit retracts to the initial position along the first axial slide rail, the first clamping mechanism and the second clamping mechanism are released, and the processed titanium tube section is taken out.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The entire process of fixed-length cutting and end face grinding is completed in one clamping, completely eliminating the positioning error introduced by secondary clamping in the split processing mode; the cutting and grinding mechanisms share the same installation reference, and the station switching is completed only by lateral translation, ensuring that the axis of the cutting end face and the grinding end face are completely coincident; with the double-end centering clamping structure and the limit column guide feed design, the perpendicularity of the end face, the coaxiality of the chamfer and the flatness are effectively guaranteed, and the shape and position accuracy and batch consistency of titanium tube end face processing are greatly improved. The cutting and grinding processes are integrated and executed in a continuous manner, saving the time spent on process transfer, secondary clamping and re-tool setting in the split processing; the core adopts a symmetrical arrangement structure of double grinding wheels, which can simultaneously grind and deburr the two titanium tube end faces after cutting, and the grinding efficiency of a single station is doubled; with the fast station switching and precise positioning of servo drive, the overall processing cycle of a single titanium tube is greatly compressed, and the production efficiency is increased by more than 40% compared with the traditional split processing mode.

[0018] (2) The second clamping mechanism can slide freely along the axial slide rail and, together with the axial scale and locking structure, can quickly adapt to the fixed-length processing of titanium tubes of different lengths without the need for additional fixed-length tooling; the chuck has a built-in replaceable copper bushing, which can quickly change the type to adapt to titanium tubes of different outer diameters; the processing parameters of each drive unit can be flexibly adjusted, and the cutting power, grinding speed and feed rate can be adjusted according to the titanium tube specifications and material grade. The equipment has a wide range of applications and low changeover cost. The titanium tube is processed using laser cutting, resulting in a smooth, flat cut with a narrow heat-affected zone. This minimizes shavings and hard burrs, significantly reducing the subsequent grinding load. The grinding wheel uses green silicon carbide abrasive, perfectly suited to the high toughness and shaving-adhesive properties of titanium alloy, providing strong grinding performance and a long service life. Combined with an elastic floating grinding structure, it adaptively compensates for abrasive wear, maintaining stable grinding pressure and preventing end-face burns and vibration marks caused by rigid grinding. Furthermore, a special design includes a copper bushing to prevent clamping scratches and an inert gas system to prevent oxidation of the cut surface, comprehensively ensuring the finished product quality of the inner and outer surfaces and end faces of the titanium tube.

[0019] (3) The gantry integrated layout is adopted, and the cutting and grinding mechanisms share the same moving carrier and feeding system, which greatly simplifies the overall structure of the equipment, reduces independent drive components, and reduces the equipment failure rate. The whole machine is controlled by the control unit in a unified time sequence, and the clamping, cutting, grinding and resetting processes are automatically and continuously executed without manual intervention for process switching. The clamping structure with double-sided symmetrical transmission and the multi-limit column guide feeding design ensure the smooth operation and accuracy of the equipment, and the long-term reliability and stability of the equipment are stronger. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a side view of the overall structure of the present invention; Figure 3This is a schematic diagram of the integrated cutting and grinding unit of the present invention.

[0021] The following are the labels in the diagram: 1. Worktable; 101. First axial slide rail; 102. Second axial slide rail; 2. First clamping mechanism; 3. Second clamping mechanism; 301. Support frame; 4. Integrated cutting and grinding unit; 401. Gantry mounting frame; 402. Laser cutting mechanism; 403. End face grinding mechanism; 404. Moving slide rail; 405. Moving block; 406. Cylinder; 407. Fixing plate; 408. Limiting post; 409. Pulley mechanism; 410. Motor 1; 411. Grinding wheel. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0023] Example: Please see Figure 1-3 A titanium tube cutting and grinding device includes a worktable 1, on which a first clamping mechanism 2, a second clamping mechanism 3, an integrated cutting and grinding unit 4, and a control unit are provided.

[0024] The worktable 1 is provided with a first axial slide rail 101 and a second axial slide rail 102, both of which are arranged parallel to the titanium tube processing axis. A first clamping mechanism 2 is fixedly installed at one end of the worktable 1, and a second clamping mechanism 3 is slidably mounted on the second axial slide rail 102. The clamping centers of the first clamping mechanism 2 and the second clamping mechanism 3 coincide with the titanium tube processing axis, and the second clamping mechanism 3 can slide along the second axial slide rail 102. The first axial slide rail 101 is used for the movement of the integrated cutting and grinding unit 4, and the second axial slide rail 102 is used for the movement of the second clamping mechanism 3. The two motion systems are independent of each other and do not interfere with each other, which not only ensures the coaxiality of the processing axis, but also realizes the independent adjustment of the cutting and grinding station and the clamping fixed length station, taking into account both the stability of equipment operation and the flexibility of adjustment.

[0025] The first clamping mechanism 2 is fixed and the second clamping mechanism 3 is slidable, forming a double-end centering clamping structure. The double-point support ensures the radial coaxiality of the titanium tube after clamping, avoiding bending deformation during the processing of long titanium tubes. The second clamping mechanism 3 can be freely adjusted along the second axial slide rail 102, which can quickly adapt to the fixed-length processing of titanium tubes of different lengths without the need for additional fixed-length tooling, making the equipment highly versatile.

[0026] The integrated cutting and grinding unit 4 is slidably mounted on the first axial slide rail 101 and located between the first clamping mechanism 2 and the second clamping mechanism 3. The integrated cutting and grinding unit 4 includes a gantry mounting frame 401, a laser cutting mechanism 402 and an end face grinding mechanism 403. A movable slide rail 404 is provided on the top of the gantry mounting frame 401. The movable slide rail 404 is perpendicular to the extension direction of the first axial slide rail 101. A movable block 405 is slidably mounted on the movable slide rail 404. The laser cutting mechanism 402 and the end face grinding mechanism 403 are mounted on the movable block 405. Through the transverse movable slide rail 404 and the movable block 405 on the top of the gantry mounting frame 401, the laser cutting mechanism 402 and the end face grinding mechanism 403 are integrated on the same movable carrier. The switching between the cutting station and the grinding station can be completed by transverse translation. Compared to a multi-mechanism discrete layout, the station switching stroke is short and the positioning accuracy is high, which can ensure that the axes of the cutting end face and the grinding end face are completely coincident, avoiding grinding misalignment; at the same time, the same mounting carrier is used, which greatly simplifies the equipment structure, reduces the number of independent drive components, and reduces equipment costs and failure points.

[0027] The control unit is electrically connected to the first clamping mechanism 2, the second clamping mechanism 3, and the integrated cutting and grinding unit 4 respectively, and is used to control each mechanism to perform clamping and positioning, laser cutting, and end face grinding processes in sequence, so as to realize fixed-length cutting and end face integrated processing of titanium tubes in one clamping.

[0028] The bottom of the movable block 405 of this application is also provided with a cylinder 406. A fixed plate 407 is provided on the output shaft of the cylinder 406. Multiple limiting posts 408 are provided on the top of the fixed plate 407. The limiting posts 408 extend into the movable block 405 and slide in cooperation with the movable block 405. The cylinder 406 drives the grinding wheel through the fixed plate 407 to achieve vertical height adjustment, realize the matching of the position of the grinding wheel and the titanium tube. With the guidance and limitation of the multiple limiting posts 408, the verticality of the fixed plate 407 during the lifting process can be guaranteed, avoiding the cutting head deviation and the grinding wheel tilt, effectively ensuring the verticality of the cutting edge and the flatness of the grinding end face, and improving the processing accuracy.

[0029] The fixed plate 407 has a laser cutting head of the laser cutting mechanism 402 at its bottom, and the end face grinding mechanism 403 is installed on one side of the laser cutting head on the fixed plate 407. Laser cutting of titanium tubes produces a smooth, flat cut with a narrow heat-affected zone and less chipping and hard burrs on the cut end face, significantly reducing the machining allowance for subsequent grinding and improving the end face processing quality. Furthermore, laser cutting eliminates tool wear issues, ensuring high processing consistency and is well-suited to the high toughness and difficult-to-cut characteristics of titanium alloys, avoiding the defects of tool sticking and tooth chipping associated with traditional circular saw cutting.

[0030] The end-face grinding mechanism 403 of this application includes a fixed frame 408, on which a pulley mechanism 409 is mounted. A motor 410 is located on one side of the upper end of the fixed frame 408. The motor 410 is connected to the driving wheel of the pulley mechanism 409. Grinding wheels 411 are arranged opposite each other on both sides of the driven wheel of the pulley mechanism 409. The central shaft of the grinding wheel 411 passes through the fixed frame 408 and is connected to the driven wheel. The structure adopts a single motor 410 driving the grinding wheel 411 to rotate relative to each other through the pulley mechanism 409. The distance between the ends of the titanium tubes on both sides after cutting can be adjusted by adjusting the second clamping mechanism 3. The two grinding wheels 411 can grind the ends of the two titanium tubes simultaneously, resulting in high processing efficiency. The two grinding wheels are symmetrically arranged, and the force is balanced during grinding.

[0031] The movable slide rail 404 of this application is provided with a drive assembly 1, which is a motor and a ball screw pair, and the movable block 405 is threadedly connected to the ball screw pair. Drive assembly 2 and drive assembly 3 are respectively installed in the first axial slide rail 101 and the second axial slide rail 102. Drive assembly 2 is connected to the gantry mounting bracket 401, and drive assembly 3 is connected to the second clamping mechanism 3. Drive assembly 2 and drive assembly 3 can also use a motor and ball screw pair, which has high transmission accuracy, controllable feed speed, and can accurately control the cutting position, grinding feed amount and fixed length size. It has a high degree of automation, and the processing parameters can be flexibly adjusted according to the titanium tube specifications to adapt to the processing needs of multiple scenarios.

[0032] The second clamping mechanism 3 of this application has support frames 301 on both sides, and the support frames 301 are connected to the drive assembly 3. The second clamping mechanism 3 is connected to the drive assembly 3 through the support frames 301 on both sides. It adopts a double-sided symmetrical transmission structure, which ensures balanced force during sliding and strong smooth operation. It can effectively avoid the clamping mechanism from tilting and always keep the clamping center coaxial with the machining axis. The matching axial scale and locking parts can intuitively and quickly adjust the fixed length dimension with high adjustment accuracy. After locking, the position is stable, avoiding length errors caused by the movement of the clamping mechanism during processing.

[0033] The gantry mounting frame of this application is also equipped with an air-blowing chip removal assembly, which includes at least two sets of nozzles. One set of nozzles is aimed at the laser cutting station to spray inert protective gas and blow away cutting slag; the other set of nozzles is aimed at the grinding station to blow away titanium chips generated during grinding. The nozzles at the laser cutting station spray inert protective gas to isolate oxygen in the high-temperature cutting zone, preventing high-temperature oxidation of the titanium cutting surface, while simultaneously blowing away cutting slag to ensure a smooth cut. The nozzles at the grinding station can blow away titanium chips generated during grinding in real time, preventing chips from adhering to the pipe surface and causing scratches, while also preventing titanium chips from entering the slide rails and transmission components and causing equipment wear.

[0034] Both the first clamping mechanism 2 and the second clamping mechanism 3 in this application are pneumatic three-jaw chucks. Replaceable copper bushings are embedded inside the jaws of the three-jaw chuck. An axial scale is provided on the side of the second axial slide rail 102, and a locking element is provided at the bottom of the second clamping mechanism 3 for locking and positioning after sliding to a preset cutting length. The replaceable copper bushings embedded inside the pneumatic three-jaw chuck utilize the characteristic that copper is less hard than titanium alloy to prevent the jaws from scratching the outer wall of the titanium tube during clamping, ensuring the surface quality of the tube. Simultaneously, the bushings can be quickly replaced to adapt to the processing of titanium tubes with different outer diameters, resulting in low changeover costs and high efficiency.

[0035] The grinding wheel 411 of this application is sintered from green silicon carbide abrasive. An elastic buffer is provided between the fixing frame 408 and the central shaft of the grinding wheel 411 to allow the grinding wheel 411 to abut against the end face of the titanium tube with floating pressure, adaptively compensating for the amount of abrasive wear. The grinding wheel 411 is made of green silicon carbide abrasive, which has high hardness and strong cutting ability. It is not easy for chips to stick when grinding titanium materials, and its grinding efficiency and service life are better than ordinary corundum abrasive. With the floating abutment structure of the elastic buffer, it can adaptively compensate for the amount of abrasive wear, always maintaining a stable grinding pressure. This avoids burning and vibration marks on the titanium end face caused by excessive rigid grinding pressure, and can also accommodate slight roundness deviations of the titanium tube, resulting in stronger grinding quality stability.

[0036] A wet chip collection tank is installed below the moving section of the integrated cutting and grinding unit 4 corresponding to worktable 1. The wet chip collection tank contains cooling cutting fluid and has a removable chip filter. After the titanium chips generated during cutting and grinding fall into the chip collection tank, they are submerged below the surface of the cutting fluid to prevent the titanium chips from oxidizing and spontaneously combusting. The fine titanium chips generated during cutting and grinding are directly submerged below the surface of the cutting fluid after falling into the tank, which fundamentally avoids the risk of titanium chips oxidizing and spontaneously combusting due to sufficient contact with air, greatly improving the production safety of titanium tube processing. At the same time, the built-in removable chip filter can separate and recover titanium chips and cutting fluid, and the cutting fluid can be recycled, reducing the cost of processing consumables.

[0037] A method for cutting and polishing titanium tubes, implemented using the aforementioned titanium tube cutting and polishing device, includes the following steps: S1. Clamping and length setting: The titanium tube is sequentially inserted into the gantry mounting bracket 401 of the second clamping mechanism 3 and the integrated cutting and grinding unit 4 along the axial direction, with the end extending to the first clamping mechanism 2; the second clamping mechanism 3 is driven to slide along the second axial slide rail 102 to the preset cutting length position and locked, and the first clamping mechanism 2 and the second clamping mechanism 3 are started simultaneously to perform double-end centering clamping on the titanium tube; S2, Laser Cutting: The control unit drives the integrated cutting and grinding unit 4 to move along the first axial slide rail 101 to the preset cutting position. The drive component 1 drives the moving block 405 to move laterally, so that the laser cutting mechanism 402 is aligned with the titanium tube processing position. The cylinder 406 drives the fixed plate 407 to feed the laser cutting head to the set cutting distance, and starts the laser cutting mechanism 402 to cooperate with the axial movement to complete the fixed-length cutting of the titanium tube. After the cutting is completed, the cylinder 406 drives the laser cutting head to retract. S3. End face grinding: Drive component 1 drives the moving block 405 to move laterally, so that the end face grinding mechanism 403 is aligned with the cut end face of the titanium tube; cylinder 406 drives the fixed plate 407 to feed the grinding wheel 411 to abut the end face of the titanium tube; start motor 410 drives the double grinding wheel 411 to rotate through the pulley mechanism 409, and grinds and deburrs the inner and outer edges of the end face of the titanium tube simultaneously; after grinding is completed, cylinder 406 drives the end face grinding mechanism 403 to retract. S4. Reset and unloading: The integrated cutting and grinding unit 4 retracts to the initial position along the first axial slide rail 101, the first clamping mechanism 2 and the second clamping mechanism 3 are released, and the processed titanium tube segment is taken out.

[0038] The overall operating logic of the device is executed sequentially in the following stages: Clamping and length setting stage: Establishing a unified machining benchmark The titanium tube enters the equipment from the second clamping mechanism side, passing sequentially through the hollow area of ​​the second clamping mechanism and the gantry mounting frame, with its end approaching the fixed first clamping mechanism. The control unit drives the drive component three inside the second axial slide rail, causing the second clamping mechanism to translate along the processing axis. After adjusting to the preset cutting length according to the axial scale on the side, it is locked and positioned by the locking device. Subsequently, the first and second clamping mechanisms operate synchronously, using a pneumatic three-jaw chuck to center and clamp the titanium tube at both ends, making the axis of the titanium tube completely coincide with the processing axis of the equipment. This establishes a unified and stable processing benchmark through dual-point support, while avoiding bending deformation during the processing of long titanium tubes.

[0039] Laser cutting stage: Precision cutting to a fixed length The control unit drives the second drive component within the first axial slide rail, causing the integrated cutting and grinding unit to move axially to the preset cutting position. Subsequently, the first drive component on the top of the gantry moves the moving block laterally, aligning the laser cutting mechanism with the axis of the titanium tube. The cylinder extends, causing the fixed plate to descend. After the laser cutting head is fed to the set working distance, the laser generator starts, and the high-energy laser beam is focused to melt the titanium tube wall, completing the fixed-length cutting of the entire tube in conjunction with the axial feed of the integrated unit.

[0040] During the cutting process, the nozzles at the corresponding cutting stations simultaneously spray inert protective gas, which not only isolates oxygen to prevent high-temperature oxidation of the titanium material, but also blows away molten slag to ensure a smooth cut. The titanium chips and slag generated during cutting fall into a wet chip collection tank under the worktable under the action of gravity and airflow, and are directly immersed in the cutting fluid to prevent oxidation and spontaneous combustion. After the cut is completed, the cylinder drives the laser cutting head to retract to a safe height.

[0041] End face grinding stage: Simultaneous deburring of both end faces After the cutting is completed, the third drive component drives the second clamping mechanism to move slightly axially, adjusting the distance between the cut ends of the titanium tubes on both sides to match the processing width of the end face grinding mechanism; then the first drive component drives the moving block to move laterally, switching the end face grinding mechanism to the titanium tube axis position, completing the precise switch from the cutting station to the grinding station.

[0042] The cylinder extends, causing the fixed plate to descend, positioning the two grinding wheels to correspond to the cut ends of the titanium tubes on both sides. Once the motor starts, it synchronously drives the grinding wheels to rotate via a pulley mechanism, simultaneously grinding and deburring the inner and outer edges of the two titanium tube ends. During grinding, the grinding wheels, through an elastic buffer, maintain a constant floating pressure against the end faces, adaptively compensating for abrasive wear and preventing end face burning and vibration marks. The nozzles at the corresponding grinding stations simultaneously blow away the titanium chips, which are collected in a wet chip collection trough. After the preset grinding amount is reached, the cylinder drives the grinding mechanism to retract.

[0043] Reset and unloading stage: Complete the processing cycle After the grinding process is completed, the integrated cutting and grinding unit retracts to the initial position along the first axial slide rail, and the first clamping mechanism and the second clamping mechanism release simultaneously, so that the processed titanium tube segment can be taken out, completing a complete processing cycle.

[0044] The entire device achieves seamless integration of cutting and grinding processes through the design of "same clamping benchmark, same moving carrier, and unified timing control". This not only ensures the accuracy of processing shape and position but also significantly reduces the processing cycle time. At the same time, the dedicated protective structure for titanium materials ensures both processing quality and production safety.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A titanium tube cutting and grinding device, comprising a worktable (1), characterized in that, The workbench (1) is provided with a first clamping mechanism (2), a second clamping mechanism (3), an integrated cutting and grinding unit (4), and a control unit; The workbench (1) is provided with a first axial slide rail (101) and a second axial slide rail (102), both of which are arranged parallel to the titanium tube processing axis. The first clamping mechanism (2) is fixedly installed at one end of the workbench (1), and the second clamping mechanism (3) is slidably mounted on the second axial slide rail (102). The clamping centers of the first clamping mechanism (2) and the second clamping mechanism (3) coincide with the titanium tube processing axis, and the second clamping mechanism (3) can slide along the second axial slide rail (102). The integrated cutting and grinding unit (4) is slidably mounted on the first axial slide rail (101) and located between the first clamping mechanism (2) and the second clamping mechanism (3); the integrated cutting and grinding unit (4) includes a gantry mounting frame (401), a laser cutting mechanism (402) and an end face grinding mechanism (403). The top of the gantry mounting frame (401) is provided with a movable slide rail (404). The movable slide rail (404) is perpendicular to the extension direction of the first axial slide rail (101). A movable block (405) is slidably mounted on the movable slide rail (404). The laser cutting mechanism (402) and the end face grinding mechanism (403) are mounted on the movable block (405). The control unit is electrically connected to the first clamping mechanism (2), the second clamping mechanism (3), and the integrated cutting and grinding unit (4) respectively, and is used to control each mechanism to perform clamping and positioning, laser cutting, and end face grinding in sequence, so as to realize fixed-length cutting and end face integrated processing of titanium tube in one clamping.

2. The titanium tube cutting and grinding device according to claim 1, characterized in that, A cylinder (406) is also provided at the bottom of the moving block (405). A fixed plate (407) is provided on the output shaft of the cylinder (406). A plurality of limiting posts (408) are provided on the top of the fixed plate (407). The limiting posts (408) extend into the moving block (405) and slide in cooperation with the moving block (405). The bottom of the fixed plate (407) is provided with a laser cutting head of the laser cutting mechanism (402), and the end face grinding mechanism (403) is installed on one side of the laser cutting head on the fixed plate (407).

3. The titanium tube cutting and grinding device according to claim 2, characterized in that, The end face grinding mechanism (403) includes a fixed frame (408), on which a pulley mechanism (409) is mounted. A motor (410) is provided on one side of the upper end of the fixed frame (408). The motor (410) is connected to the driving wheel of the pulley mechanism (409). Grinding wheels (411) are arranged opposite to each other on both sides of the driven wheel of the pulley mechanism (409). The central shaft of the grinding wheel (411) passes through the fixed frame (408) and is connected to the driven wheel.

4. The titanium tube cutting and grinding device according to claim 2, characterized in that, The movable slide rail (404) is provided with a drive assembly, which is a motor and a ball screw pair. The movable block (405) is threadedly connected to the ball screw pair. The first axial slide rail (101) and the second axial slide rail (102) are respectively provided with drive component two and drive component three; drive component two is connected to the gantry mounting bracket (401), and drive component three is connected to the second clamping mechanism (3).

5. The titanium tube cutting and grinding device according to claim 4, characterized in that, The second clamping mechanism (3) is provided with support frames (301) on both sides, and the support frames (301) are connected to the drive assembly.

6. The titanium tube cutting and grinding device according to claim 1, characterized in that, The gantry mounting frame is also equipped with an air blowing and chip removal assembly, which includes at least two sets of nozzles. One set of nozzles is aimed at the laser cutting station to spray inert protective gas and blow away the cutting slag; the other set of nozzles is aimed at the grinding station to blow away the titanium chips generated during grinding.

7. The titanium tube cutting and grinding device according to claim 1, characterized in that, The first clamping mechanism (2) and the second clamping mechanism (3) are both pneumatic three-jaw chucks. The inner side of the jaws of the three-jaw chuck is fitted with a replaceable copper bushing. An axial scale is provided on the side of the second axial slide rail (102). A locking component is provided at the bottom of the second clamping mechanism (3) for locking and positioning after sliding to the preset cutting length position.

8. The titanium tube cutting and grinding device according to claim 1, characterized in that, The grinding wheel (411) is sintered from green silicon carbide abrasive; an elastic buffer is provided between the fixing frame (408) and the central shaft of the grinding wheel (411) to allow the grinding wheel (411) to abut against the end face of the titanium tube with floating pressure, thereby adaptively compensating for the amount of abrasive wear.

9. The titanium tube cutting and grinding device according to claim 1, characterized in that, The workbench (1) is provided with a wet chip collection tank below the moving section of the integrated cutting and grinding unit (4). The wet chip collection tank is filled with cooling cutting fluid and has a built-in removable chip filter. After the titanium chips generated by cutting and grinding fall into the chip collection tank, they are submerged below the surface of the cutting fluid to prevent the titanium chips from oxidizing and spontaneously combusting.

10. A method for cutting and grinding titanium tubes, implemented using the titanium tube cutting and grinding apparatus according to any one of claims 1 to 9, characterized in that, Includes the following steps: S1, clamping and fixing length: insert the titanium tube into the gantry mounting bracket (401) of the second clamping mechanism (3) and the integrated cutting and grinding unit (4) along the axial direction, with the end extending to the first clamping mechanism (2); drive the second clamping mechanism (3) to slide along the second axial slide rail (102) to the preset cutting length position and lock it, and simultaneously start the first clamping mechanism (2) and the second clamping mechanism (3) to clamp the titanium tube at both ends; S2, Laser Cutting: The control unit drives the integrated cutting and grinding unit (4) to move along the first axial slide rail (101) to the preset cutting position. The drive component drives the moving block (405) to move laterally, so that the laser cutting mechanism (402) is aligned with the titanium tube processing position. The cylinder (406) drives the fixed plate (407) to feed the laser cutting head to the set cutting distance, and starts the laser cutting mechanism (402) to complete the fixed-length cutting of the titanium tube in coordination with the axial movement. After the cutting is completed, the cylinder (406) drives the laser cutting head to retract. S3, end face grinding: Drive component one drives the moving block (405) to move laterally, so that the end face grinding mechanism (403) is aligned with the cut end face of the titanium tube; cylinder (406) drives the fixed plate (407) to drive the grinding wheel (411) to feed to the end face of the titanium tube, start motor one (410) drives the double grinding wheel (411) to rotate through the pulley mechanism (409), and grinds and deburrs the inner and outer edges of the end face of the titanium tube simultaneously; after grinding is completed, cylinder (406) drives the end face grinding mechanism (403) to retract; S4. Reset and unloading: The integrated cutting and grinding unit (4) retracts to the initial position along the first axial slide rail (101), the first clamping mechanism (2) and the second clamping mechanism (3) are released, and the processed titanium tube section is taken out.

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