A high-precision cutting device for cutting processing of aluminum alloy profiles

Abstract

The application discloses a high-precision cutting device for cutting processing of aluminum alloy profiles and particularly relates to the technical field of aluminum alloy profile cutting processing, and comprises a machine tool base, two groups of cutting machine heads and a clamping and positioning unit. The two groups of cutting machine heads are symmetrically arranged on the top of the machine tool base along the profile processing direction. The arrangement posture and position of the top pressing cylinder and the top pressing execution member can be synchronously adjusted according to the arrangement angle of the cutting saw, the top pressing execution member is adjacent to the cutting point of the cutting saw, the top pressing clamp can always apply close-range and close-cutting-plane precise top pressing constraints to the aluminum alloy profile in the instantaneous cutting area of the cutting saw, the torsion, warping and slight vibration displacement of the aluminum alloy profile generated in the bevel cutting process are effectively limited, the cantilever deformation and cutting shaking problems of the aluminum alloy profile caused by the fact that the clamping point is far away from the cutting area are avoided, and the end face cutting angle precision and the cutting surface flatness of the aluminum alloy profile are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of aluminum alloy profile cutting technology, and in particular to a high-precision cutting device for aluminum alloy profile cutting. Background Technology

[0002] Aluminum alloy profiles are profile products made of aluminum and aluminum alloys through extrusion molding. With their characteristics of being lightweight, high-strength, corrosion-resistant, and easy to process and form, they are widely used in many fields such as building doors and windows, curtain wall projects, and interior decoration.

[0003] During the production and assembly of products such as doors, windows, and curtain walls, it is necessary to cut the ends of aluminum alloy profiles to a fixed length and angle according to the actual assembly dimensions and splicing angle requirements in order to ensure the fitting accuracy and structural stability of subsequent assembly.

[0004] Currently, there are many types of aluminum alloy profile cutting and processing equipment. Among them, the CNC double-head cutting saw, with its advantages of simultaneous processing at both ends and high cutting efficiency, can achieve high-precision end face processing such as vertical straight cutting and 45° oblique cutting at the ends of profiles. It is the core equipment for batch processing of door and window curtain wall profiles and is widely applicable to the end corner cutting process of various aluminum alloy profiles.

[0005] When cutting aluminum alloy profiles, to ensure stability during processing, existing CNC double-head cutting saws are typically equipped with lateral and top clamping fixtures. These fixtures apply clamping constraints from the sides and top of the profile, respectively, limiting displacement under cutting forces. However, when the cutting saw performs angled cutting at an inclined angle, an inclined angle is formed between the saw blade and the top and sides of the profile, limiting the operating space around the cutting point. To avoid rigid collisions between the saw blade and the fixtures during feed and oscillation, the fixtures are often arranged vertically away from the cutting point. However, in actual cutting, the periodic cutting force of the saw blade can easily induce overall vibration in the profile. The movement is particularly noticeable for thin-walled, large-section hollow aluminum alloy profiles. Therefore, if the fixed clamping point is far from the cutting position, the tangential component force generated during oblique cutting can easily cause the cantilever section of the profile to twist, warp, and deform, further amplifying the cutting error. If an attempt is made to move the clamping point closer to the cutting position, the space limitation formed by the oblique cutting angle of the saw blade makes it difficult to place the clamps close together. Moreover, if the spacing is too small, it is very easy for the upper pressure head, side pressure head, and saw blade or guard to interfere and collide, posing a safety hazard to the operation of the equipment. At the same time, when the cutting saw retracts and resets, the cut end face of the profile that is fixed and pressed is prone to sliding and scraping against the side of the saw blade, causing quality problems such as edge chipping and surface scratches, which greatly reduces the production quality.

[0006] Therefore, this application proposes a high-precision cutting device for aluminum alloy profile cutting. Summary of the Invention

[0007] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-precision cutting device for aluminum alloy profile cutting.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A high-precision cutting device for aluminum alloy profile cutting includes a machine tool base, two sets of cutting heads, and a clamping and positioning unit.

[0010] The two sets of cutting heads are symmetrically arranged on the top of the machine tool base along the profile processing direction, and at least one set of cutting heads can reciprocate along the length direction of the machine tool base to adjust the processing distance between the two sets of cutting heads.

[0011] Both sets of cutting heads include a cutting saw, a sawing drive device, and an angle adjustment structure. The sawing drive device is configured to drive the cutting saw to rotate and drive the cutting saw to complete the cutting feed and retraction reset actions. The angle adjustment structure is used to adjust the cutting saw's setting angle.

[0012] The clamping and positioning unit includes a side clamp and a top clamp. The side clamp is located on the side of the cutting head and is used to apply lateral positioning constraints to the aluminum alloy profile. The top clamp is located on the upper part of the cutting head and includes an adjustment mechanism, a top clamping drive, and a top clamping actuator. The two ends of the top clamping drive are connected to the adjustment mechanism and the top clamping actuator, respectively. The adjustment mechanism is configured to synchronously adjust the arrangement posture and position of the top clamping drive and the top clamping actuator according to the cutting angle of the cutting saw, so that the top clamping actuator is close to the cutting point of the cutting saw, and the clamping direction of the top clamping actuator is parallel to the cutting plane of the cutting saw, so as to apply top clamping constraints to the aluminum alloy profile at the cutting point.

[0013] As a further embodiment of the present invention, a clearance unit is also provided at the cutting station corresponding to the cutting head, the clearance unit including a lifting mechanism and a bracket;

[0014] The bracket is set in the aluminum alloy profile bearing area of ​​the cutting station to support the aluminum alloy profile. The lifting mechanism is set to drive the bracket to move the aluminum alloy profile slightly after the cutting saw has completed the cutting operation and before it retracts and resets, so that a clearance gap is formed between the cutting end face of the aluminum alloy profile and the side surface of the cutting saw.

[0015] As a further embodiment of the present invention, the adjustment mechanism includes an X-axis guide rail, a mounting base slidably mounted on the X-axis guide rail, a support frame, a connecting arm, a movable block, and a drive assembly;

[0016] The X-axis guide rail is located on the upper part of the cutting machine head. The top end of the support frame is rotatably connected to one end of the mounting base via a rotating shaft, and its bottom end is connected to the top pressure drive component. The movable block is slidably connected to the bottom side of the mounting base, and the connecting arm is rotatably connected between the movable block and the support frame.

[0017] The drive assembly is connected to the movable block for driving the movable block to move in a straight line, and the top pressure drive component is a top pressure cylinder.

[0018] As a further aspect of the present invention, the drive assembly includes a drive motor, a screw, and a bevel gear set;

[0019] The screw is rotatably mounted on the bottom of the mounting base, the movable block is screwed to the screw via threads, the drive motor is located at the top end of the mounting base, and the output end of the drive motor is connected to the screw via a bevel gear set.

[0020] As a further embodiment of the present invention, the top pressure actuator includes a fixed seat, an air cavity is provided in the upper part of the fixed seat, and a plurality of sliding cavities are arranged in an array in the lower part of the fixed seat, the top of the sliding cavity being in communication with the air cavity;

[0021] The interior of the sliding cavity is equipped with a piston that can slide axially. A first spring is provided between the piston and the inner wall of the top of the sliding cavity, and a floating top rod is provided at the lower end of the piston. The bottom end of the floating top rod extends out of the sliding cavity and is provided with a rubber head.

[0022] The side wall of the fixed base is provided with a first exhaust valve and an air supply hose. Both the first exhaust valve and the air supply hose are connected to the air chamber. One end of the air supply hose is connected to a pneumatic drive source assembly.

[0023] As a further embodiment of the present invention, the lifting mechanism includes a plurality of fixed cylinders arranged in an array at the lower part of the cutting head, and the interior of the fixed cylinders is provided with an upper chamber and a lower chamber along the axial direction;

[0024] The upper chamber is symmetrically equipped with push blocks that can slide towards or away from each other in the horizontal direction, and a top block is axially penetrating the middle of the top of the upper chamber. The inner sides of the two push blocks are symmetrically equipped with inner inclined surfaces, and several springs are arranged between the outer side of the push blocks and the inner wall of the upper chamber. The bottom ends of the top block are symmetrically equipped with outer inclined surfaces that slide with the inner inclined surfaces, and the top of the top block is fixedly connected to the bracket.

[0025] The lower chamber is equipped with a piston that can slide axially, and the bottom ends of the two push blocks are symmetrically hinged to the piston.

[0026] The bottom end of the fixed cylinder is provided with a second exhaust valve, and the bottom ends of the multiple fixed cylinders are connected by an air supply pipe. The air supply pipe and the second exhaust valve are both connected to the lower chamber, and the air supply pipe is connected to the air pressure drive source assembly.

[0027] As a further embodiment of the present invention, the pneumatic drive source assembly includes an air compressor pump disposed inside the cutting head. The air compressor pump has an air supply branch one and an air supply branch two respectively disposed at its outlet end. Both the air supply branch one and the air supply branch two are provided with control valves. One end of the air supply branch one is connected to an air delivery hose, and one end of the air supply branch two is connected to an air delivery pipeline.

[0028] As a further embodiment of the present invention, at least one limiting rod is connected through the bottom ends of the two push blocks, and the two ends of the limiting rod are respectively fixedly connected to the inner wall of the upper cavity.

[0029] As a further embodiment of the present invention, the side-pressure clamp includes a side-pressure cylinder and a flexible pressure block. The side-pressure cylinder is disposed at one end of the side of the cutting head relative to the cutting saw, and the flexible pressure block is disposed at the output end of the side-pressure cylinder, for lateral clamping and positioning of the aluminum alloy profile as the side-pressure cylinder extends and retracts.

[0030] The technical effects and advantages provided by the present invention in the above technical solution are as follows:

[0031] This invention can synchronously adjust the placement posture and position of the top pressure cylinder and the top pressure actuator according to the placement angle of the cutting saw, so that the top pressure actuator is close to the cutting point of the cutting saw. This allows the top pressure clamp to always apply precise top pressure constraint to the aluminum alloy profile at close range and in close contact with the cutting plane in the instantaneous cutting area of ​​the cutting saw. This effectively limits the torsion, warping and slight vibration displacement of the aluminum alloy profile during the oblique cutting process, and avoids the problem of cantilever deformation and cutting vibration of the aluminum alloy profile caused by the clamping point being far away from the cutting area. This greatly improves the cutting angle accuracy and surface flatness of the aluminum alloy profile end face.

[0032] This invention uses a fixed base, multiple sets of floating top rods and rubber heads to form a top pressing actuator, which can fully adapt the top pressing action to aluminum alloy profiles with different cross sections and wall thicknesses. The multi-point independent adaptive pressing head structure can fully fit the top surface contour of the profile, and the pressing point is always close to the cutting point of the cutting saw, effectively applying stable top constraint to the profile in the cutting area, suppressing cutting vibration and profile warping deformation, and ensuring the processing accuracy and surface quality of the cutting end face;

[0033] This invention, by setting up a clearance unit, can drive the bracket to cause a slight downward displacement of the aluminum alloy profile after the cutting saw has fed in and before it retracts and resets. This creates a clearance gap between the cutting end face of the aluminum alloy profile and the side surface of the cutting saw. At the same time, the top pressing actuator continuously presses down to maintain stability. This effectively avoids defects such as chipping and scratches caused by the cutting saw scraping the end face of the profile during the retraction process, ensuring the processing quality and smoothness of the cutting end face, and greatly improving the finished product qualification rate and the stability of batch processing. Attached Figure Description

[0034] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0035] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 This is a schematic diagram of the connection structure between the machine tool base and the cutting head of the present invention;

[0037] Figure 3 This is a schematic diagram of the cutting head structure of the present invention;

[0038] Figure 4 This is one of the schematic diagrams of the internal structure of the cutting head of the present invention;

[0039] Figure 5 This is the second schematic diagram of the internal structure of the cutting head of the present invention;

[0040] Figure 6 This is a schematic diagram of the connection between the fixed cylinder and the fixed base of the present invention;

[0041] Figure 7 This is a schematic diagram of the internal structure of the fixing cylinder of the present invention;

[0042] Figure 8 This is a schematic diagram of the internal structure of the fixing base of the present invention;

[0043] Figure 9 This is a schematic diagram of the structure of the cylinder and the fixed seat of the present invention when they deflect.

[0044] In the picture:

[0045] 100. Machine tool base; 101. Cutting head; 102. Cutting saw;

[0046] 200. Side-pressure clamp;

[0047] 300. Top-pressing clamp; 301. Top-pressing cylinder; 302. Fixed seat; 303. Floating top rod; 304. Rubber head; 305. Air chamber; 306. Sliding chamber; 307. Piston one; 308. First spring; 309. First exhaust valve;

[0048] 400. X-axis guide rail; 401. Mounting base; 402. Support frame; 403. Connecting arm; 404. Movable block;

[0049] 500, bracket;

[0050] 600. Fixed cylinder; 601. Piston II; 602. Connecting rod; 603. Push block; 604. Top block; 605. Spring II; 606. Limiting rod; 607. Second exhaust valve;

[0051] 700. Air compressor pump; 701. Air supply branch one; 702. Air supply branch two; 703. Air delivery hose; 704. Air delivery pipeline.

[0052] 800, drive motor; 801, screw; 802, bevel gear set. Detailed Implementation

[0053] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0054] like Figures 1-6 , Figure 8 and Figure 9 As shown, the present invention proposes a high-precision cutting device for aluminum alloy profile cutting, including a machine tool base 100, two sets of cutting heads 101 and a clamping and positioning unit.

[0055] Two sets of cutting heads 101 are symmetrically arranged on the top of the machine tool base 100 along the profile processing direction. At least one set of cutting heads 101 can reciprocate along the length direction of the machine tool base 100. A set of transverse guide rails can drive one set of cutting heads 101 to move laterally in a straight line, thereby adjusting the processing distance between the two sets of cutting heads 101.

[0056] Both sets of cutting heads 101 include a cutting saw 102, a sawing drive device and an angle adjustment structure. The sawing drive device is configured to drive the cutting saw 102 to rotate and drive the cutting saw 102 to complete the cutting feed and retraction reset actions. The angle adjustment structure is used to adjust the setting angle of the cutting saw 102.

[0057] It should be noted that the sawing drive device can be composed of a sawing bracket, a servo motor, a belt pulley transmission group and a longitudinal guide rail. The servo motor is mounted on the sawing bracket and can drive the cutting saw 102 to rotate at high speed through the belt pulley transmission group. The sawing bracket is slidably mounted on the longitudinal guide rail and can move back and forth along the longitudinal guide rail to drive the cutting saw 102 to synchronously complete the feed cutting and reset retraction actions.

[0058] In addition, this equipment can also be matched with the angle adjustment structure of a conventional CNC double-head saw. That is, the angle adjustment structure is assembled with the sawing bracket to adjust the tilt angle of the cutting saw 102 (usually 90° vertical and 45° tilt) to meet the needs of profile cutting at different angles.

[0059] Correspondingly, refer to Figures 1-5 It can be seen that the surface of the cutting head 101 housing has vertically arranged and 45° inclined tool outlets, which are adapted to the angle adjustment swing trajectory and feed path of the cutting saw 102, ensuring that the cutting saw 102 smoothly extends out of the housing to complete the high-precision cutting operation of aluminum alloy profiles.

[0060] In summary, the sawing drive device, the angle adjustment structure, and the corresponding tool outlet design are all well-known knowledge in the field of CNC double-head saws and belong to existing conventional technical means. They are not all shown in the figure and are not the focus of the improvement of this invention, so they will not be described in detail.

[0061] The clamping and positioning unit includes a side clamp 200 and a top clamp 300. The side clamp 200 is disposed on the side of the cutting head 101 and is used to apply lateral positioning constraints to the aluminum alloy profile. The top clamp 300 is disposed on the upper part of the cutting head 101 and includes an adjustment mechanism, a top clamping drive, and a top clamping actuator. The two ends of the top clamping drive are respectively connected to the adjustment mechanism and the top clamping actuator. The adjustment mechanism is configured to adjust the arrangement posture and position of the top clamping drive and the top clamping actuator synchronously with the cutting angle of the cutting saw 102, so that the top clamping actuator is close to the cutting point of the cutting saw 102, and the clamping direction of the top clamping actuator is parallel to the cutting plane of the cutting saw 102, so as to apply top clamping constraints to the aluminum alloy profile at the cutting point.

[0062] The side-pressure clamp 200 includes a side-pressure cylinder and a flexible pressure block. The side-pressure cylinder is located on the side of the cutting head 101 at one end relative to the cutting saw 102, and the flexible pressure block is located at the output end of the side-pressure cylinder. It is used to complete the lateral clamping and positioning of the aluminum alloy profile as the side-pressure cylinder extends and retracts.

[0063] In one specific embodiment of the present invention, specifically by Figure 9It can be seen that the adjustment mechanism includes an X-axis guide rail 400, a mounting base 401 slidably mounted on the X-axis guide rail 400, a support frame 402, a connecting arm 403, a movable block 404, and a drive assembly;

[0064] The X-axis guide rail 400 is set on the upper part of the cutting head 101. The top end of the support frame 402 is rotatably connected to one end of the mounting base 401 through a rotating shaft, and its bottom end is connected to the top pressure drive component. The movable block 404 is slidably connected to the bottom side of the mounting base 401, and the connecting arm 403 is rotatably connected between the movable block 404 and the support frame 402.

[0065] The drive assembly is connected to the movable block 404 for driving the movable block 404 to move in a straight line. The top pressure drive component is the top pressure cylinder 301.

[0066] The movable block 404 is driven by the drive assembly to move linearly along the bottom side of the mounting base 401, causing the movable block 404 to drive the support frame 402 to rotate on the mounting base 401 via the connecting arm 403. Then, the mounting base 401 can drive the top-pressure cylinder 301 and its output top-pressure actuator to rotate synchronously. Simultaneously, the X-axis guide rail 400 can drive the mounting base 401 to move laterally, causing the mounting base 401 to drive the top-pressure cylinder 301 and the top-pressure actuator to move synchronously laterally in the horizontal direction, thereby allowing the cutting saw 10 to move according to the desired direction. The placement angle of the top pressure cylinder 301 and the top pressure actuator are adjusted synchronously to make the top pressure actuator close to the cutting point of the cutting saw 102. That is, when the cutting saw 102 is vertically placed, the top pressure cylinder 301 and the top pressure actuator are also vertically placed and close to one side of the cutting saw 102. When the cutting saw 102 is placed at a 45° angle, the top pressure cylinder 301 and the top pressure actuator are simultaneously tilted at a 45° angle and are also close to the side wall of the cutting saw 102.

[0067] Through the above structure, the top pressure clamp 300 can always apply precise top pressure constraint to the aluminum alloy profile in close proximity and against the cutting plane in the instantaneous cutting area of ​​the cutting saw 102. This effectively limits the torsion, warping and slight vibration displacement of the aluminum alloy profile during the oblique cutting process, and avoids the problem of cantilever deformation and cutting vibration of the aluminum alloy profile caused by the clamping point being far away from the cutting area. This greatly improves the cutting angle accuracy and surface flatness of the aluminum alloy profile end face, and ensures production quality.

[0068] In this embodiment, the drive assembly includes a drive motor 800, a screw 801, and a bevel gear set 802;

[0069] The screw 801 is rotatably mounted on the bottom of the mounting base 401. The movable block 404 is screwed into the screw 801 via a thread. The drive motor 800 is located at the top end of the mounting base 401, and the output end of the drive motor 800 is connected to the screw 801 via a bevel gear set 802.

[0070] The bevel gear set 802 includes bevel gear one and bevel gear two, which mesh perpendicularly with each other and are respectively connected to the output end of the drive motor 800 and one end of the screw 801 to realize the transmission connection.

[0071] In one specific embodiment of the present invention, specifically by Figure 8 It can be seen that the top pressure actuator includes a fixed base 302, an air cavity 305 is provided in the upper part of the fixed base 302, and a number of sliding cavities 306 are arranged in an array in the lower part of the interior. The top of the sliding cavity 306 is connected to the air cavity 305.

[0072] The interior of the sliding cavity 306 is equipped with a piston 307 that can slide axially. A first spring 308 is provided between the piston 307 and the inner wall of the top of the sliding cavity 306. A floating push rod 303 is provided at the lower end of the piston 307. The bottom end of the floating push rod 303 extends out of the sliding cavity 306 and is provided with a rubber head 304.

[0073] The side wall of the fixed base 302 is provided with a first exhaust valve 309 and an air supply hose 703. Both the first exhaust valve 309 and the air supply hose 703 are connected to the air chamber 305. One end of the air supply hose 703 is connected to a pneumatic drive source assembly.

[0074] When the cutting saw 102 is inclined, the top pressure cylinder 301 and the fixed seat 302 simultaneously deflect to the corresponding inclination angle and are positioned close to the cutting plane. The top pressure cylinder 301 can drive the fixed seat 302 to move downward in a direction parallel to the cutting plane, so that the fixed seat 302 drives multiple sets of floating top rods 303 to approach the aluminum alloy profile. Then, the profile can be self-adaptive clamping constraint can be achieved through two working modes:

[0075] First, after the top-pressing cylinder 301 drives the fixed seat 302 down to the preset work position, the rubber heads 304 at the bottom of the multiple floating top rods 303 lightly touch or leave gaps with the upper surface of the aluminum alloy profile. Due to the influence of the profile top surface contour and the inclined arrangement posture, the initial distance between each floating top rod 303 and the profile surface is different, and uniform pressing cannot be achieved by the single stroke of the top-pressing cylinder 301. At this time, the pneumatic drive source component inputs high-pressure gas into the air supply hose 703. The high-pressure gas is diverted into each slide cavity 306 through the air chamber 305 and acts on the piston 307 that is sealed and slidably installed in the slide cavity 306. The piston 307 pushes the piston 307 to overcome the pre-tightening force of the first spring 308 and drive the floating top rod 303 to move down and extend. Each floating top rod 303 can adaptively adjust the extension amount according to the actual contour of the aluminum alloy profile top surface, so that the rubber heads 304 are tightly pressed against the corresponding positions on the top surface of the aluminum alloy profile, realizing full pressing constraint at multiple points and near the cutting point.

[0076] Secondly, by continuously extending the top pressure cylinder 301, the rubber heads 304 at the bottom of each set of floating top rods 303 are pressed against the upper surface of the aluminum alloy profile. Due to the difference in the profile top surface contour, each floating top rod 303 can slide in the slide cavity 306 through the piston 307 and squeeze the first spring 308 to adaptively compensate for the height difference at each point, ensuring that each set of rubber heads 304 is effectively in contact with the profile surface. Then, the pneumatic drive source assembly inputs high-pressure gas into the air supply hose 703. The high-pressure gas acts on the upper end of the piston 307 to form an additional clamping force and lock the position of the piston 307, preventing the floating top rods 303 from retracting and moving.

[0077] In summary, the dual-mode clamping constraint design described above allows the top clamping action to be fully adapted to aluminum alloy profiles with different cross-sections and wall thicknesses. The multi-point independent adaptive pressure head structure can fully conform to the top surface contour of the profile, and the clamping point is always adjacent to the cutting point of the cutting saw 102, effectively applying stable top constraint to the profile in the cutting area, suppressing cutting vibration and profile warping deformation, and ensuring the processing accuracy and surface quality of the cutting end face.

[0078] like Figures 3-7 As shown, a clearance unit is also provided at the cutting station corresponding to the cutting head 101. The clearance unit includes a lifting mechanism and a bracket 500.

[0079] The bracket 500 is set in the aluminum alloy profile bearing area of ​​the cutting station to support the aluminum alloy profile. The lifting mechanism is set to drive the bracket 500 to move the aluminum alloy profile slightly after the cutting saw 102 has completed the cutting operation and before it has retracted and reset, so that a clearance gap is formed between the cutting end face of the aluminum alloy profile and the side surface of the cutting saw 102.

[0080] In one specific embodiment of the present invention, the lifting mechanism includes a plurality of fixed cylinders 600 arranged in an array at the lower part of the cutting head 101, and the interior of the fixed cylinders 600 is provided with an upper chamber and a lower chamber along the axial direction;

[0081] The upper chamber is symmetrically equipped with push blocks 603 that can slide towards or away from each other in the horizontal direction, and a top block 604 is axially inserted through the middle of the top of the upper chamber. The inner sides of the two push blocks 603 are symmetrically equipped with inner inclined surfaces, and several springs 605 are arranged between the outer side of the push blocks 603 and the inner wall of the upper chamber. The bottom ends of the top block 604 are symmetrically equipped with outer inclined surfaces that slide with the inner inclined surfaces, and the top of the top block 604 is fixedly connected to the bracket 500.

[0082] The lower chamber is equipped with a piston 601 that can slide axially, and the bottom ends of the two push blocks 603 are symmetrically hinged to the piston 601 with connecting rods 602.

[0083] The bottom end of the fixed cylinder 600 is provided with a second exhaust valve 607, and the bottom ends of the multiple fixed cylinders 600 are connected by an air supply pipe 704. The air supply pipe 704 and the second exhaust valve 607 are both connected to the lower chamber, and the air supply pipe 704 is connected to the pneumatic drive source assembly.

[0084] The aluminum alloy profile to be processed is placed on the bracket 500. Before the cutting operation, high-pressure gas is introduced into the gas pipeline 704 through the pneumatic drive source assembly. The high-pressure gas is diverted to the lower chamber in each fixed cylinder 600, pushing the piston 601 to move upward. The piston 601 drives the two push blocks 603 to slide against each other against the preload of the spring 605 through the connecting rod 602. The inner and outer inclined surfaces are used to squeeze and drive the two push blocks 603 to push the top block 604 upward at the same time. Multiple sets of top blocks 604 lift the bracket 500 together, causing the aluminum alloy profile on the bracket 500 to produce a slight lifting displacement.

[0085] When the cutting saw 102 feeds in, before it retracts and resets, the pneumatic drive source component stops supplying high-pressure gas into the air supply pipe 704. At the same time, the second exhaust valve 607 opens, and the side pressure clamp 200 resets. Under the rebound force of the second spring 605 and the gravity of the component, the second piston 601 is driven to slide downwards and reset. The connecting rod 602 pulls the two push blocks 603 to move in opposite directions, and the top block 604 falls back along the axial direction. This causes the bracket 500 to move the aluminum alloy profile slightly downwards. A clearance gap is formed between the cutting end face of the aluminum alloy profile and the side surface of the cutting saw 102. At the same time, the rubber head 304 at the top continues to press down to maintain stability. Then the cutting saw 102 retracts and resets. There is no contact friction between the side of the cutting saw 102 and the end face of the profile. This effectively avoids defects such as chipping and scratches caused by the cutting saw 102 scraping the end face of the profile during the retraction process, ensuring the processing quality and smoothness of the cutting end face, and greatly improving the finished product qualification rate and the stability of batch processing.

[0086] In this embodiment, at least one limiting rod 606 is connected through the bottom ends of the two push blocks 603, and the two ends of the limiting rod 606 are fixedly connected to the inner wall of the upper cavity.

[0087] The limit rod 606 can further support and limit the push block 603, so that the push block 603 can slide stably along a straight line.

[0088] like Figure 4 , Figure 5 and Figure 6As shown, the pneumatic drive source assembly includes an air compressor pump 700 disposed inside the cutting head 101. The air compressor pump 700 has an air supply branch 1 701 and an air supply branch 2 702 respectively disposed at its outlet end. Both the air supply branch 1 701 and the air supply branch 2 702 are provided with control valves. One end of the air supply branch 1 701 is connected to the air delivery hose 703, and one end of the air supply branch 2 702 is connected to the air delivery pipe 704.

[0089] It can be seen that high-pressure gas can be independently supplied to the fixed base 302 and the fixed cylinder 600 through the first gas supply branch 701 and the second gas supply branch 702 respectively. The on and off of the first gas supply branch 701 and the second gas supply branch 702 can be controlled by the control valve respectively. The adaptive clamping action of the top clamp 300 and the avoidance action of the aluminum alloy profile lifting and falling share the same pneumatic drive source component, reducing the layout of additional power components, simplifying the overall air circuit layout, and realizing the independent control of the clamping and avoidance processes in different time periods without interference.

[0090] It is worth noting that the gas hose 703 can be supported and pulled by the buckle, which can restrict the swing amplitude of the suspended section of the gas hose 703 and prevent the gas hose 703 from drooping freely, bending and pulling.

[0091] Working principle:

[0092] During operation, the aluminum alloy profile to be processed is placed on the bracket 500 of the two sets of cutting heads 101, and the processing distance between the two sets of cutting heads 101 is adjusted. High pressure gas is input into the fixed cylinder 600 through the pneumatic drive source assembly. Multiple sets of top blocks 604 lift the bracket 500 together, causing the aluminum alloy profile on the bracket 500 to produce a slight lifting displacement. At the same time, the side pressure clamp 200 moves to position and constrain the side of the aluminum alloy profile.

[0093] Then, according to the setting angle of the cutting saw 102, the adjustment mechanism controls the top pressure cylinder 301 and the fixed seat 302 to deflect synchronously to the corresponding tilt angle and be positioned close to the cutting point. The top pressure cylinder 301 drives the fixed seat 302 to move down in a direction parallel to the cutting plane, so that the fixed seat 302 drives multiple sets of floating top rods 303 to approach the aluminum alloy profile. In conjunction with the pneumatic drive source component, high pressure gas is input into the fixed seat 302. Each set of floating top rods 303 can adaptively adjust the extension amount according to the actual contour of the top surface of the aluminum alloy profile, so that the rubber head 304 is tightly pressed against the corresponding position on the top surface of the aluminum alloy profile, realizing full clamping constraint at multiple points and close to the cutting point, ensuring the cutting angle accuracy and the flatness of the cut surface.

[0094] The cutting saw 102 feeds in for cutting, and before it retracts and resets, it controls each set of top blocks 604 to descend axially, causing the bracket 500 to move the aluminum alloy profile down slightly. A clearance gap is formed between the cutting end face of the aluminum alloy profile and the side surface of the cutting saw 102. At the same time, the rubber head 304 at the top continues to press down to maintain stability. Then the cutting saw 102 retracts and resets, ensuring the processing quality of the cutting end face and achieving high-precision cutting of the aluminum alloy profile.

[0095] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0096] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-precision cutting device for aluminum alloy profile cutting, characterized in that, It includes a machine tool base (100), two sets of cutting heads (101), and a clamping and positioning unit; Two sets of cutting heads (101) are symmetrically arranged on the top of the machine tool base (100) along the profile processing direction. At least one set of cutting heads (101) can be moved back and forth along the length direction of the machine tool base (100) to adjust the processing distance between the two sets of cutting heads (101). Both sets of cutting heads (101) include a cutting saw (102), a sawing drive device and an angle adjustment structure. The sawing drive device is configured to drive the cutting saw (102) to rotate and drive the cutting saw (102) to complete the cutting feed and retraction reset actions. The angle adjustment structure is used to adjust the setting angle of the cutting saw (102). The clamping and positioning unit includes a side clamp (200) and a top clamp (300). The side clamp (200) is located on the side of the cutting head (101) and is used to apply lateral positioning constraints to the aluminum alloy profile. The top clamp (300) is located on the upper part of the cutting head (101) and includes an adjustment mechanism, a top clamping drive, and a top clamping actuator. The two ends of the top clamping drive are connected to the adjustment mechanism and the top clamping actuator, respectively. The adjustment mechanism is configured to adjust the arrangement posture and position of the top clamping drive and the top clamping actuator synchronously with the cutting angle of the cutting saw (102), so that the top clamping actuator is close to the cutting point of the cutting saw (102), and the pressing direction of the top clamping actuator is parallel to the cutting plane of the cutting saw (102) to apply top clamping constraints to the aluminum alloy profile at the cutting point.

2. The high-precision cutting device for aluminum alloy profile cutting according to claim 1, characterized in that, The cutting station corresponding to the cutting head (101) is also provided with a clearance unit, which includes a lifting mechanism and a bracket (500). The bracket (500) is set in the aluminum alloy profile bearing area of ​​the cutting station to support the aluminum alloy profile. The lifting mechanism is set to drive the bracket (500) to move the aluminum alloy profile slightly after the cutting saw (102) has completed the cutting operation and before it retracts and resets, so that a clearance gap is formed between the cutting end face of the aluminum alloy profile and the side surface of the cutting saw (102).

3. The high-precision cutting device for aluminum alloy profile cutting according to claim 1, characterized in that, The adjustment mechanism includes an X-axis guide rail (400), a mounting base (401) slidably mounted on the X-axis guide rail (400), a support frame (402), a connecting arm (403), a movable block (404), and a drive assembly; The X-axis guide rail (400) is located on the upper part of the cutting head (101). The top end of the support frame (402) is rotatably connected to one end of the mounting base (401) via a rotating shaft, and its bottom end is connected to the top pressure drive component. The movable block (404) is slidably connected to the bottom side of the mounting base (401), and the connecting arm (403) is rotatably connected between the movable block (404) and the support frame (402). The drive assembly is connected to the movable block (404) for driving the movable block (404) to move in a straight line. The top pressure drive component is a top pressure cylinder (301).

4. The high-precision cutting device for aluminum alloy profile cutting according to claim 3, characterized in that, The drive assembly includes a drive motor (800), a screw (801), and a bevel gear set (802). The screw (801) is rotatably mounted on the bottom of the mounting base (401), the movable block (404) is screwed to the screw (801) by a thread, the drive motor (800) is located at the top end of the mounting base (401), and the output end of the drive motor (800) is connected to the screw (801) through a bevel gear set (802).

5. A high-precision cutting device for aluminum alloy profile cutting according to claim 2, characterized in that, The top-pressing actuator includes a fixed base (302), an air cavity (305) is provided in the upper part of the fixed base (302), and a plurality of sliding cavities (306) are arranged in an array in the lower part of the fixed base (302). The top of the sliding cavity (306) is connected to the air cavity (305). The interior of the sliding cavity (306) is equipped with a piston (307) that can slide axially. A first spring (308) is provided between the piston (307) and the inner wall of the top end of the sliding cavity (306). A floating top rod (303) is provided at the lower end of the piston (307). The bottom end of the floating top rod (303) extends out of the sliding cavity (306) and is provided with a rubber head (304). The side wall of the fixed base (302) is provided with a first exhaust valve (309) and an air supply hose (703). The first exhaust valve (309) and the air supply hose (703) are both connected to the air chamber (305). One end of the air supply hose (703) is connected to a pneumatic drive source assembly.

6. A high-precision cutting device for aluminum alloy profile cutting according to claim 5, characterized in that, The lifting mechanism includes a plurality of fixed cylinders (600) arranged in an array at the lower part of the cutting head (101), and the interior of the fixed cylinder (600) is provided with an upper chamber and a lower chamber along the axial direction; The upper chamber is symmetrically provided with push blocks (603) that can slide towards or away from each other in the horizontal direction, and a top block (604) is axially penetrating the middle of the top of the upper chamber. The inner sides of the two push blocks (603) are symmetrically provided with inner inclined surfaces, and a number of springs (605) are provided between the outer side of the push block (603) and the inner wall of the upper chamber. The bottom ends of the top block (604) are symmetrically provided with outer inclined surfaces that slide with the inner inclined surfaces, and the top of the top block (604) is fixedly connected to the bracket (500). The lower chamber is equipped with a piston 2 (601) that can slide along the axis, and the bottom ends of the two push blocks (603) are symmetrically hinged to the piston 2 (601) with connecting rods (602). The bottom end of the fixed cylinder (600) is provided with a second exhaust valve (607), and the bottom ends of the multiple fixed cylinders (600) are connected by an air supply pipe (704). The air supply pipe (704) and the second exhaust valve (607) are both connected to the lower chamber, and the air supply pipe (704) is connected to the pneumatic drive source assembly.

7. A high-precision cutting device for aluminum alloy profile cutting according to claim 6, characterized in that, The pneumatic drive source assembly includes an air compressor pump (700) installed inside the cutting head (101). The air compressor pump (700) has an air supply branch one (701) and an air supply branch two (702) installed at its outlet. Both the air supply branch one (701) and the air supply branch two (702) are equipped with control valves. One end of the air supply branch one (701) is connected to the air delivery hose (703), and one end of the air supply branch two (702) is connected to the air delivery pipeline (704).

8. A high-precision cutting device for aluminum alloy profile cutting according to claim 6, wherein at least one limiting rod (606) is connected through the bottom ends of the two push blocks (603), and the two ends of the limiting rod (606) are respectively fixedly connected to the inner wall of the upper cavity.

9. A high-precision cutting device for aluminum alloy profile cutting according to claim 1, wherein the side pressure clamp (200) includes a side pressure cylinder and a flexible pressure block, the side pressure cylinder is disposed at one end of the side of the cutting head (101) relative to the cutting saw (102), and the flexible pressure block is disposed at the output end of the side pressure cylinder for lateral clamping and positioning of the aluminum alloy profile as the side pressure cylinder extends and retracts.

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