A car chassis aluminum alloy subframe shaping machine

Abstract

This invention relates to the field of automotive chassis aluminum alloy subframe processing technology, and discloses an automotive chassis aluminum alloy subframe shaping machine, comprising: a shaping support platform, a conveying drive platform, a chassis aluminum alloy subframe, a conveying support slide plate, and an auxiliary conveying platform. The conveying drive platform is fixedly connected to the inner side of the shaping support platform, and the auxiliary conveying platform is fixedly connected to the inner side of the shaping support platform. The conveying support slide plate is fixedly connected to the top surface of the conveying drive platform and the auxiliary conveying platform, and the chassis aluminum alloy subframe is disposed on the top surface of the conveying support slide plate. The machine also includes: a shaping adjustment assembly, comprising a shaping adjustment device, a size detection camera, a shaping adjustment hydraulic cylinder, a shaping pressure table, and a shaping adjustment hydraulic rod; and a bottom shaping support assembly, comprising a bottom shaping support device, a bottom shaping hydraulic cylinder, a bottom shaping hydraulic rod, and a bottom shaping contact table. This invention achieves high-precision automated correction and prevents secondary deformation through coordinated upper and lower pressure shaping.

Description

Technical Field

[0001] This invention relates to the field of automotive chassis aluminum alloy subframe processing technology, specifically an automotive chassis aluminum alloy subframe shaping machine. Background Technology

[0002] With the continued popularization of lightweight automotive technology, aluminum alloy is widely used in the construction of chassis subframes for new energy vehicles and passenger cars. Aluminum alloy subframes offer advantages such as light weight, high strength, corrosion resistance, and good shock absorption, effectively reducing vehicle weight and improving range and driving stability. They are gradually replacing traditional steel subframes, becoming a core load-bearing component of the automotive chassis, and their market application continues to expand. The subframe plays a crucial role in connecting suspension, steering, and braking components during vehicle assembly. Its dimensions, flatness, torsion, and the accuracy of various mounting holes directly determine the overall chassis assembly precision and driving safety. Yes, the mainstream production process of aluminum alloy subframes currently includes multiple steps such as casting, heat treatment and aging, welding and splicing, and precision machining. During the entire processing, the workpiece is prone to various plastic deformations and residual stress deformations. Uneven cooling during casting can easily cause overall warping and bending. The heat treatment process releases internal stress and causes structural distortion. The high temperature thermal stress generated during the welding process can easily lead to crossbeam misalignment and lug offset. Subsequent transportation, stacking, and tooling clamping will further aggravate dimensional deviations, resulting in finished subframes generally having quality problems such as excessive flatness, diagonal distortion, and offset mounting holes, which seriously affect subsequent vehicle assembly operations.

[0003] Currently, the industry's methods for correcting deformed aluminum alloy subframes are relatively outdated. Traditional manual hammering correction methods are difficult to control in terms of force, resulting in extremely low correction accuracy. They can only correct minor deformations and cannot meet the requirements of precision assembly. Ordinary single-point hydraulic presses can only achieve unidirectional pressure correction and do not design positioning and pressure structures in conjunction with the overall structural characteristics of the subframe. After correction, stress rebound is very likely to occur, the probability of secondary deformation is high, and the correction pass rate is difficult to guarantee. They cannot meet the needs of modern automotive parts mass production and high-precision processing. Therefore, we have proposed an aluminum alloy subframe forming machine for automotive chassis. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an aluminum alloy subframe shaping machine for automotive chassis, which solves the aforementioned problems.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solution:

[0006] A shaping machine for aluminum alloy subframes of automobile chassis, comprising:

[0007] The system comprises a shaping support platform, a conveyor drive platform, an aluminum alloy chassis subframe, a conveyor support slide plate, and an auxiliary conveyor platform. The inner side of the shaping support platform is fixedly connected to the conveyor drive platform, and the inner side of the shaping support platform is also fixedly connected to the auxiliary conveyor platform. The top surfaces of the conveyor drive platform and the auxiliary conveyor platform are fixedly connected to the conveyor support slide plate, and the top surface of the conveyor support slide plate is provided with the aluminum alloy chassis subframe. The system also includes:

[0008] A shaping and adjusting assembly includes a shaping and adjusting device, a size detection camera, a shaping and adjusting hydraulic cylinder, a shaping pressure table, and a shaping and adjusting hydraulic rod. It is used to perform size detection and shaping on the aluminum alloy subframe of the chassis. The shaping and adjusting device is fixedly connected to the inner side of the shaping support table. The size detection camera and the shaping and adjusting hydraulic cylinder are fixedly connected to the top of the shaping and adjusting device. The shaping and adjusting hydraulic rod is slidably connected to the inner side of the shaping and adjusting hydraulic cylinder. The output end of the shaping and adjusting hydraulic rod is fixedly connected to the shaping pressure table.

[0009] The bottom shaping support assembly includes a bottom shaping support device, a bottom shaping hydraulic cylinder, a bottom shaping hydraulic rod, and a bottom shaping contact platform, used for bottom support of the aluminum alloy subframe of the chassis during shaping. The bottom shaping support device is provided on the top surface of the conveying support slide plate. The bottom shaping hydraulic cylinder is fixedly installed on the top of the bottom shaping support device. The bottom shaping hydraulic rod is slidably connected to the inner side of the bottom shaping hydraulic cylinder. The bottom shaping contact platform is fixedly connected to the outer end of the bottom shaping hydraulic rod.

[0010] Preferably, the shaping and adjusting device comprises a shaping support frame, a shaping X-axis drive mechanism, a shaping Y-axis drive mechanism, a shaping Z-axis drive mechanism, and a shaping X-axis auxiliary mechanism. A symmetrically distributed shaping support frame is fixedly connected to the inner side of the shaping support platform. A shaping X-axis drive mechanism is fixedly installed on the top surface of the shaping support frame. A shaping X-axis auxiliary mechanism is fixedly installed on the top surface of the other end of the shaping support frame. A shaping Y-axis drive mechanism is installed and connected to the top output ends of the shaping X-axis drive mechanism and the shaping X-axis auxiliary mechanism. A shaping Z-axis drive mechanism is fixedly installed at the output end of the shaping Y-axis drive mechanism. A size detection camera and a shaping and adjusting hydraulic cylinder are fixedly connected to the lifting output end of the shaping Z-axis drive mechanism.

[0011] Preferably, the bottom of the shaping press is provided with a detection mounting groove, and a pressure detection component is provided on the inner side of the detection mounting groove.

[0012] Preferably, the pressure detection assembly includes a pressure detector and a shaping plate. The pressure detector is fixedly connected to the inner side of the detection mounting groove at the bottom of the shaping plate, and the shaping plate is fixedly connected to the bottom surface of the shaping adjustment hydraulic cylinder. The shaping plate is installed inside the detection mounting groove.

[0013] Preferably, the top surface of the conveying support slide plate is fixedly connected to a bottom mounting platform that is equidistantly distributed in a rectangle, and a bottom shaping support device is fixedly installed on the top of the bottom mounting platform.

[0014] Preferably, the bottom shaping support device comprises a bottom shaping support frame, a bottom shaping X-axis drive mechanism, a bottom shaping Y-axis support frame, and a bottom shaping Y-axis drive mechanism. The bottom shaping support frame is fixedly connected to the top of the bottom mounting platform. The bottom shaping X-axis drive mechanisms are slidably connected to the outer side of the bottom shaping support frame. The bottom shaping Y-axis support frame is fixedly connected to the sides of the two bottom shaping X-axis drive mechanisms. The bottom shaping Y-axis drive mechanism is slidably connected to the outer side of the bottom shaping Y-axis support frame. The bottom shaping hydraulic cylinder is fixedly connected to the side of the bottom shaping Y-axis drive mechanism.

[0015] Preferably, the top surface of the conveying support slide plate is fixedly connected to a frame support platform that is equidistantly distributed in a rectangle, the top surface of the frame support platform is slidably connected to a chassis aluminum alloy subframe, and a frame positioning component is provided on the top of the frame support platform.

[0016] Preferably, the top surface of the frame support platform is fixedly connected with a positioning boss, and the top surface of the chassis aluminum alloy subframe is provided with frame positioning holes that are distributed in a rectangular shape at equal intervals. The positioning boss slides inside the frame positioning holes to achieve preliminary positioning of the chassis aluminum alloy subframe.

[0017] Preferably, the frame positioning assembly includes a positioning slide, a frame positioning cylinder, and a frame positioning slide rod. The frame positioning cylinder is fixedly connected to the top surface of the frame support platform, the frame positioning slide rod is slidably connected to the inner side of the frame positioning cylinder, the positioning slide is fixedly connected to the outer end of the frame positioning slide rod, and the positioning slide is slidably connected to the top surface of the frame support platform.

[0018] Preferably, the top side of the frame support platform is fixedly connected with symmetrically distributed guide limiting platforms, and the side of the positioning slide is provided with symmetrically distributed limiting grooves, and the guide limiting platforms slide inside the limiting grooves.

[0019] Compared with the prior art, the advantages of the present invention are as follows:

[0020] A shaping machine for aluminum alloy subframes of automotive chassis is provided, which has the following beneficial effects:

[0021] This invention utilizes a shaping adjustment assembly consisting of a shaping adjustment device, a dimensional detection camera, a shaping adjustment hydraulic cylinder, a shaping pressure table, and a shaping adjustment hydraulic rod, in conjunction with a bottom shaping support assembly consisting of a bottom shaping support device, a bottom shaping hydraulic cylinder, a bottom shaping hydraulic rod, and a bottom shaping contact table. This achieves coordinated top-to-bottom pressure shaping, effectively solving the problem of secondary deformation caused by overall bending or stress concentration in the workpiece when applying pressure unidirectionally with a traditional single-point press. It can simultaneously correct various complex deformations such as protrusions, indentations, and torsions, significantly improving shaping accuracy and dimensional stability. The shaping adjustment device employs a three-axis linkage system consisting of an X-axis drive mechanism, a Y-axis drive mechanism, and a Z-axis drive mechanism. Combined with the dimensional detection camera, it performs a comprehensive scan of the subframe before and after shaping, automatically identifying deformed areas and accurately calculating the required correction pressure. This achieves integrated closed-loop control of detection and shaping, avoiding subjective errors from manual detection and correction, and significantly improving the correction pass rate and production efficiency. The pressure detection component at the bottom of the shaping pressure table can collect data in real time during the pressure application process. The system receives contact pressure data and feeds it back to the control system. Based on the elastic limit and yield strength of the aluminum alloy material, the system dynamically adjusts the hydraulic cylinder output force and maintains pressure after reaching the target pressure. This allows for the full release of internal stress and completion of plastic deformation, effectively preventing stress rebound and reducing the probability of secondary deformation. The frame positioning assembly, through the initial mechanical limiting of the positioning boss and frame positioning hole, combined with the positioning slide driven by the frame positioning cylinder and the guiding structure of the guide limit platform and limit groove, achieves multi-level precise positioning of the subframe. This prevents workpiece displacement or rotation during the forming process, providing a stable and reliable positioning benchmark for high-precision forming. The conveyor drive platform and auxiliary conveyor platform work together to drive the conveyor support slide, enabling automatic workpiece feeding and unloading. Combined with multiple bottom forming support devices evenly distributed in a rectangular shape on the bottom mounting platform, the support position can be flexibly adjusted according to the different structural characteristics of the subframe, adapting to the forming needs of various subframe models. It possesses good versatility and automation, fully meeting the requirements of large-scale, high-precision production of modern automotive parts. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram showing the overall structure of the present invention broken down;

[0024] Figure 3 for Figure 2 A magnified view of part A in the diagram;

[0025] Figure 4 for Figure 2 A magnified view of section B in the diagram;

[0026] Figure 5 for Figure 2A magnified view of part C in the diagram;

[0027] Figure 6 This is a schematic diagram of the internal shaping structure of the present invention;

[0028] Figure 7 This is a cross-sectional schematic diagram of the internal shaping structure of the present invention;

[0029] Figure 8 for Figure 7 A magnified view of part D in the diagram;

[0030] Figure 9 This is a schematic diagram of the shaping and adjusting device of the present invention;

[0031] Figure 10 This is a schematic diagram of the bottom shaping support device of the present invention.

[0032] In the diagram: 1. Shaping support table; 2. Shaping adjustment device; 3. Conveyor drive table; 4. Positioning slide table; 5. Guide limit table; 6. Dimension detection camera; 7. Shaping adjustment hydraulic cylinder; 8. Shaping pressure table; 9. Chassis aluminum alloy subframe; 10. Frame support table; 11. Bottom mounting platform; 12. Bottom shaping support device; 13. Conveyor support slide plate; 14. Shaping adjustment hydraulic rod; 15. Auxiliary conveyor table; 16. Limiting slide groove; 17. Pressure detector; 18. Shaping pressure plate; 19. Frame positioning... 20. Positioning hole; 21. Frame positioning cylinder; 22. Frame positioning slide bar; 23. Bottom shaping hydraulic cylinder; 24. Bottom shaping hydraulic rod; 25. Bottom shaping contact platform; 26. Positioning boss; 27. Shaping support frame; 28. Shaping X-axis drive mechanism; 29. ​​Shaping Y-axis drive mechanism; 30. Shaping Z-axis drive mechanism; 31. Shaping X-axis auxiliary mechanism; 32. Bottom shaping X-axis drive mechanism; 33. Bottom shaping Y-axis support frame; 34. Bottom shaping Y-axis drive mechanism. Detailed Implementation

[0033] 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.

[0034] Please see Figure 1-10 The present invention provides a technical solution:

[0035] A shaping machine for aluminum alloy subframes of automobile chassis, comprising:

[0036] The system comprises a shaping support platform 1, a conveyor drive platform 3, a chassis aluminum alloy subframe 9, a conveyor support slide plate 13, and an auxiliary conveyor platform 15. The conveyor drive platform 3 is fixedly connected to the inner side of the shaping support platform 1, and the auxiliary conveyor platform 15 is also fixedly connected to the inner side of the shaping support platform 1. The conveyor support slide plate 13 is fixedly connected to the top surface of the conveyor drive platform 3 and the auxiliary conveyor platform 15. The chassis aluminum alloy subframe 9 is mounted on the top surface of the conveyor support slide plate 13. The system also includes:

[0037] The shaping and adjusting assembly includes a shaping and adjusting device 2, a size detection camera 6, a shaping and adjusting hydraulic cylinder 7, a shaping pressure table 8, and a shaping and adjusting hydraulic rod 14. It is used to perform size detection and shaping on the aluminum alloy subframe 9 of the chassis. The shaping and adjusting device 2 is fixedly connected to the inner side of the shaping support table 1. The size detection camera 6 and the shaping and adjusting hydraulic cylinder 7 are fixedly connected to the top of the shaping and adjusting device 2. The shaping and adjusting hydraulic rod 14 is slidably connected to the inner side of the shaping and adjusting hydraulic cylinder 7. The output end of the shaping and adjusting hydraulic rod 14 is fixedly connected to the shaping pressure table 8.

[0038] The bottom shaping support assembly includes a bottom shaping support device 12, a bottom shaping hydraulic cylinder 22, a bottom shaping hydraulic rod 23, and a bottom shaping contact table 24. It is used for bottom support during the shaping of the aluminum alloy subframe 9 of the chassis. The bottom shaping support device 12 is mounted on the top surface of the conveyor support slide plate 13. The bottom shaping hydraulic cylinder 22 is fixedly installed on the top of the bottom shaping support device 12. The bottom shaping hydraulic rod 23 is slidably connected to the inner side of the bottom shaping hydraulic cylinder 22, and the bottom shaping contact table 24 is fixedly connected to the outer end of the bottom shaping hydraulic rod 23. The shaping support platform 1 adopts a thickened steel integral welded frame structure, which has undergone aging stress relief treatment, resulting in extremely high overall rigidity and load-bearing capacity. It is not prone to deformation or torsion under long-term hydraulic shaping pressure, and the overall machine maintains good reference accuracy. It provides a stable installation foundation for the shaping, conveying, and positioning modules. The conveying drive platform 3 and the auxiliary conveying platform 1 are symmetrically arranged and adopt a synchronous drive structure, which can realize smooth linear reciprocating conveying of the conveying support slide plate 13 without deviation or jamming. It is suitable for automatic loading and unloading of large-size and heavy-duty automotive chassis aluminum alloy subframes 9. The surface of the conveyor support slide plate 13 is treated with wear-resistant and anti-slip material, providing a large bearing area and uniform force distribution. It can stably support the subframe workpiece, preventing slippage and collisions during transport. The shaping and adjustment assembly integrates visual inspection and hydraulic shaping. The dimensional inspection camera 6 has high-definition imaging and high-precision contour recognition capabilities, accurately collecting deformation data such as subframe flatness, torsion, and hole deviation. The shaping and adjustment hydraulic cylinder 7 and the shaping and adjustment hydraulic rod 14 provide smooth transmission and controllable pressure, driving the shaping pressure table 8 to precisely press down and correct, adapting to shaping needs with different degrees of deformation. The bottom shaping... The forming support component serves as the lower bearing support reference and can form an upper and lower counter-pressure straightening structure with the upper forming mechanism. This overcomes the defects of traditional unidirectional pressure that easily leads to secondary stress deformation. The bottom forming hydraulic cylinder 22 outputs stable thrust, and through the bottom forming hydraulic rod 23, it drives the bottom forming contact table 24 to precisely support the deformed parts of the workpiece. Multi-point adaptive support effectively disperses the forming pressure and protects the aluminum alloy material from damage caused by hard extrusion. The whole machine is suitable for the batch forming production of various aluminum alloy subframes for new energy and passenger vehicles, with a high degree of automation and excellent straightening accuracy.

[0039] Furthermore, the shaping and adjusting device 2 consists of a shaping support frame 26, a shaping X-axis drive mechanism 27, a shaping Y-axis drive mechanism 28, a shaping Z-axis drive mechanism 29, and a shaping X-axis auxiliary mechanism 30. The inner side of the shaping support platform 1 is fixedly connected to symmetrically distributed shaping support frames 26. The top surface of the shaping support frame 26 is fixedly mounted with the shaping X-axis drive mechanism 27, and the top surface of the other end of the shaping support frame 26 is fixedly mounted with the shaping X-axis auxiliary mechanism 30. The top output ends of the shaping X-axis drive mechanism 27 and the shaping X-axis auxiliary mechanism 30 are connected to the shaping Y-axis drive mechanism 28. The output end of the shaping Y-axis drive mechanism 28 is fixedly mounted with the shaping Z-axis drive mechanism 29. The lifting output end of the shaping Z-axis drive mechanism 29 is fixedly connected to a dimension detection camera 6 and a shaping and adjusting hydraulic cylinder 7. The shaping support frame 26 uses high-strength cast aluminum components, is lightweight while possessing ultra-high structural rigidity, and its symmetrical layout forms a gantry-type support structure, providing support for the X, Y, and Z-axis drive mechanisms. With a stable installation benchmark, the X-axis drive mechanism 27 and the X-axis auxiliary mechanism 3 form a dual-end synchronous feed structure, which does not deform or deviate during long-term high-frequency reciprocating motion. They adopt a combination of precision linear guides and servo drives, which has high walking accuracy and smooth start and stop, and can eliminate the problem of uneven load shaking caused by single-sided drive. The Y-axis drive mechanism 8 is straddled between the two sets of X-axis mechanisms to achieve precise lateral displacement, with high motion coaxiality and strong load capacity. The Z-axis drive mechanism 29 adopts a vertical lifting layout, with controllable stroke and high positioning accuracy. It can accurately drive the dimension inspection camera 6 and the shaping adjustment hydraulic cylinder 7 to complete the movement of any point in three-dimensional space. The entire three-axis linkage architecture adopts a closed guide protection design, which is dustproof and iron filingsproof, and is suitable for harsh processing environments such as dust and humidity in the workshop. It can automatically traverse each inspection and shaping station of the subframe to achieve full contour scanning, automatic deformation analysis and precise pressure application at fixed points. There is no need for repeated manual alignment and adjustment, which greatly improves the automation level of shaping operation and the level of integrated inspection and shaping.

[0040] Furthermore, the bottom of the shaping pressure table 8 is provided with a detection and installation groove, and the pressure detection component is installed inside the detection and installation groove. The shaping pressure table 8 is made of high-strength mold steel that is milled in one piece, with good pressure resistance and is not easy to dent or deform under shaping force. The bottom has an embedded detection and installation groove with a closed groove structure, which can hide the pressure detection component inside. This does not occupy the external shaping operation space, and can prevent processing iron filings, dust, and oil from entering the sensor, preventing corrosion of the detection element and signal interference, and extending its service life. The groove size is precisely matched with the shape of the pressure detector and the shaping pressure plate, with small assembly gaps and reliable positioning, which can ensure that the force is coaxial during the pressure application process and will not cause off-center load to affect the detection accuracy. At the same time, the installation groove has a structural reinforcement function, weakening the impact of the opening on the overall strength of the shaping pressure table. It can withstand large hydraulic pressure without cracking or deformation, taking into account structural strength, protection performance and integrated design of detection and installation, providing a reliable installation carrier for real-time pressure acquisition and closed-loop shaping control.

[0041] Furthermore, the pressure detection assembly includes a pressure detector 17 and a shaping plate 18. The pressure detector 17 is fixedly connected to the inner side of the detection mounting groove at the bottom of the shaping platform 8, and the shaping plate 18 is fixedly connected to the bottom surface of the shaping adjustment hydraulic cylinder 7. The shaping plate 18 is installed inside the detection mounting groove. The pressure detector 17 adopts a high-precision strain gauge pressure sensing element, which has a fast response speed and high measurement accuracy. It can continuously collect the instantaneous pressure and steady-state holding pressure data during shaping contact in real time and feed them back to the equipment control system in real time to realize closed-loop pressure regulation. The shaping plate 18 is made of high-hardness wear-resistant alloy plate with a polished and scratch-resistant surface treatment. The aluminum alloy subframe features soft-surface contact, preventing hard indentations and surface scratches, protecting the workpiece's appearance and structural integrity. The forming pressure plate 18 is fitted snugly with the pressure detector, ensuring uniform force transmission without localized stress concentration, guaranteeing accurate and reliable pressure data acquisition without lag or distortion. The entire pressure detection assembly is concealed, not occupying additional forming space, and can monitor instantaneous impact pressure and steady-state holding pressure in real time. The control system dynamically adjusts the hydraulic output based on the yield characteristics of the aluminum alloy material, precisely controlling the forming pressure and holding time, effectively releasing internal residual stress, preventing secondary deformation due to springback after forming, and significantly improving the forming pass rate and dimensional consistency.

[0042] Furthermore, the top surface of the conveyor support slide plate 13 is fixedly connected to bottom mounting platforms 11 arranged in a rectangular equidistant pattern. Bottom shaping support devices 12 are fixedly installed on the top of the bottom mounting platforms 11. The bottom mounting platforms 11 are arranged in a rectangular equidistant array, and are made of thickened sheet metal milling. The mounting reference surface is flat, and the load-bearing rigidity is large. They can independently provide a stable mounting point for each group of bottom shaping support devices 12. The multiple groups of equidistant layouts can flexibly select support positions according to different models and deformation positions of subframes, realizing multi-point distributed support and avoiding local dent damage to the workpiece caused by concentrated force at a single point. The mounting platforms and the conveyor support slide plate 13 are connected by bolts, which has high positioning accuracy and is easy to disassemble and assemble. It is convenient for later maintenance and adjustment of the workstation spacing, and is suitable for flexible production of multiple types of subframes. At the same time, the mounting platforms have a certain height difference, which can avoid the conveyor track and shaping space, so that the bottom shaping support devices can freely adjust their stroke and position without interfering with the conveying and positioning mechanisms. The layout is reasonable and the structure is compact.

[0043] Furthermore, the bottom shaping support device 12 consists of a bottom shaping support frame 31, a bottom shaping X-axis drive mechanism 32, a bottom shaping Y-axis support frame 33, and a bottom shaping Y-axis drive mechanism 34. The bottom shaping support frame 31 is fixedly connected to the top of the bottom mounting platform 11. Symmetrically distributed bottom shaping X-axis drive mechanisms 32 are slidably connected to the outer side of the bottom shaping support frame 31. The bottom shaping Y-axis support frames 33 are fixedly connected to the sides of the two bottom shaping X-axis drive mechanisms 32. The bottom shaping Y-axis drive mechanism 34 is slidably connected to the outer side of the bottom shaping Y-axis support frame 33. A bottom shaping hydraulic cylinder 22 is fixedly connected to the side of the bottom shaping Y-axis drive mechanism 34. The bottom shaping support frame 31 is a vertical modular support base with a stable and vibration-resistant structure. It serves as the X and Y axis moving installation reference, bearing the reciprocating load of the shaping mechanism without deformation. The shaft drive mechanism 32 adopts a double-set symmetrical sliding structure, with high guide rail precision and smooth operation, enabling precise left and right position adjustment. The bottom shaping Y-axis support frame 33 spans two sets of X-axis mechanisms, with strong rigid connection and strong overall integrity, which can stably bear the load of the Y-axis mechanism and hydraulic cylinder. The bottom shaping Y-axis drive mechanism 34 can achieve precise displacement in the front and rear directions, and cooperate with the X-axis to form arbitrary point adjustment in the two-dimensional plane. It can accurately move to the underside of various concave and torsional deformations of the subframe. The entire bottom shaping support device adopts servo precision adjustment and can automatically align according to the deformation coordinates detected by the camera. The bottom shaping hydraulic cylinder 22 is installed in a regular position, and the output thrust is vertically centered. Through the bottom shaping hydraulic rod 23, it drives the bottom shaping contact table 24 to smoothly support and form an upper and lower pressure correction with the upper shaping pressure table, which fundamentally suppresses the springback of the aluminum alloy workpiece after shaping and improves the stability and repeatability of the shaping dimensions.

[0044] Furthermore, a rectangularly equidistant frame support platform 10 is fixedly connected to the top surface of the conveyor support slide 13. A chassis aluminum alloy subframe 9 is slidably connected to the top surface of the frame support platform 10. A frame positioning component is installed on the top of the frame support platform 10. The frame support platforms 10 are arranged rectangularly and equidistantly on the conveyor support slide 13. The platform surface is precision ground and leveled, resulting in high flatness. It can evenly support the overall weight of the chassis aluminum alloy subframe 9, preventing it from being suspended and subjected to stress, thus avoiding micro-deformation. The support platform is made of wear-resistant and corrosion-resistant material, making it durable for vehicle use. It is resistant to oil stains and dust corrosion, and is not prone to rust and wear under long-term load. The multi-stage support platform is arranged in a zoned layout to match the outer contour of the subframe and the crossbeam structure, achieving multi-point uniform support and avoiding local suspension that would cause additional bending stress during shaping and pressure application. At the same time, the support platform provides a regular mounting base for the frame positioning components, integrating load-bearing, positioning, and avoidance into one unit. The structure is compact and does not occupy additional shaping work space. The workpiece is placed stably and the conveying and alignment are accurate, providing a stable foundation support for subsequent visual inspection and upper and lower pressure shaping.

[0045] Furthermore, a positioning boss 25 is fixedly connected to the top surface of the frame support platform 10, and the top surface of the chassis aluminum alloy subframe 9 is provided with frame positioning holes 19 distributed in a rectangular shape at equal intervals. The positioning boss 25 slides inside the frame positioning holes 19 to achieve preliminary positioning of the chassis aluminum alloy subframe 9. The positioning boss 25 adopts a high-strength wear-resistant column structure and is integrally fixed with the frame support platform 10. It has high coaxiality, high hardness, and is not easy to wear and deform. The frame positioning holes 19 and the positioning boss are precisely matched, and the hole diameter tolerance is precisely controlled, which can realize the subframe The frame provides rapid initial positioning, limiting front-to-back and left-to-right horizontal offset. The rectangular equidistant arrangement can match the mounting holes of different subframe specifications, offering strong versatility. The positioning boss insertion limit structure is simple and reliable, without complex adjustment structures. It is impact-resistant, withstands repeated loading and unloading, and can withstand vibrations during workpiece placement and shaping without loosening. Initial positioning can significantly reduce the subsequent fine positioning stroke, shorten alignment time, and improve the overall machine cycle time. At the same time, it ensures that the workpiece placement benchmark is consistent each time, providing a constant positioning benchmark for visual inspection coordinate matching and accurate replication of shaping points.

[0046] Furthermore, the frame positioning assembly includes a positioning slide 4, a frame positioning cylinder 20, and a frame positioning slide rod 21. The frame positioning cylinder 20 is fixedly connected to the top surface of the frame support platform 10, and the frame positioning slide rod 21 is slidably connected to the inner side of the frame positioning cylinder 20. The positioning slide 4 is fixedly connected to the outer end of the frame positioning slide rod 21, and the positioning slide 4 is slidably connected to the top surface of the frame support platform 10. The frame positioning cylinder 20 adopts a high-thrust precision pneumatic component, which has fast start-stop response and stable extension stroke, and is suitable for frequent clamping and loosening conditions of tooling. The frame positioning slide rod 21 has high rigidity. With high coaxiality, the sliding mechanism can smoothly transmit cylinder thrust, driving the positioning slide 4 to move linearly without deviation. The positioning slide 4 adopts a contour-fitting structure, with its inner shape matching the side profile of the subframe. It has a large force-bearing area when clamping, preventing the workpiece edges from being squeezed and causing deformation or surface damage. The entire frame positioning assembly is symmetrically arranged on the left and right, allowing for synchronous centering and clamping from both sides. It automatically corrects minor workpiece placement deviations, ensuring that the center of each shaping station coincides, avoiding uneven force during shaping due to misalignment. The structure has good synchronization of movement and the clamping force is gentle and controllable, making it suitable for clamping and protecting easily deformable aluminum alloy materials.

[0047] Furthermore, the top side of the frame support platform 10 is fixedly connected with symmetrically distributed guide limiting platforms 5, and the side of the positioning slide 4 is provided with symmetrically distributed limiting grooves 16. The guide limiting platforms 5 slide inside the limiting grooves 16. The guide limiting platforms 5 are integrally formed and fixed to the side of the frame support platform 10. They are made of wear-resistant hard material, and the guide surface is flat and smooth. The limiting grooves 16 and the guide limiting platforms are precisely fitted with a clearance, which can strictly constrain the positioning slide 4 to only make linear reciprocating motion, prevent up and down tilting and left and right swaying during the clamping process, and ensure the centering and positioning accuracy. The symmetrical double guide structure is evenly stressed and can withstand the clamping reaction force without twisting deformation. It can maintain stable guiding accuracy even after long-term reciprocating sliding. The hidden layout of the guide limiting platforms does not interfere with the workpiece loading and unloading and the forming space. At the same time, it has a dustproof and chip-proof structure to prevent iron chips from entering the groove and causing jamming and wear, ensuring that the positioning mechanism operates smoothly and accurately for a long time, and providing reliable guide limiting guarantee for stable clamping of the subframe forming station.

[0048] Working principle: When this invention is used, the conveyor drive platform 3 first provides power to drive the conveyor support slide plate 13 to move horizontally inside the forming support platform 1. The auxiliary conveyor platform 15 moves synchronously to ensure smooth conveying. The chassis aluminum alloy subframe 9 is placed on the top surface of the conveyor support slide plate 13 and enters the forming station with it. When the subframe reaches the set position, the positioning boss 25 on the top surface of the frame support platform 10 is inserted into the frame positioning hole 19 opened at the bottom of the subframe to achieve initial mechanical limiting. Subsequently, the frame positioning cylinder 20 is activated, pushing the frame positioning slide rod 21 to extend and drive the positioning slide 4 to slide inward along the surface of the frame support platform 10. During this process, the guide limiting platform 5 and the limiting plate opened on the side of the positioning slide 4 are connected. The positioning slide 16 engages with the positioning slide 4 to ensure linear movement without deflection. The positioning slides 4 on both sides clamp the subframe from the side, achieving precise positioning and preventing workpiece displacement or rotation during subsequent shaping processes. This provides a stable positioning reference for high-precision shaping. After the subframe is clamped and fixed, the shaping adjustment device 2 begins to operate. This device consists of a shaping support frame 26, a shaping X-axis drive mechanism 27, a shaping Y-axis drive mechanism 28, a shaping Z-axis drive mechanism 29, and a shaping X-axis auxiliary mechanism 30. The shaping X-axis drive mechanism 27 and the shaping X-axis auxiliary mechanism 30 are respectively mounted on the shaping support frame 26 on both sides. The two move synchronously, driving the shaping Y-axis drive mechanism 28 straddling it along the X-axis. With precise directional movement, the shaping Y-axis drive mechanism 28 then drives the shaping Z-axis drive mechanism 29 at its output end to move along the Y direction. The dimension detection camera 6, fixed at the lifting output end of the shaping Z-axis drive mechanism 29, scans the subframe's contour, flatness, torsion, and the positions of each mounting hole in three-dimensional space, collecting actual dimensional data and transmitting it to the control system. This data is compared with a preset standard model to calculate the parts requiring shaping, the direction, and the required correction pressure. Based on the calculation results, the control system again drives the three-axis mechanism to precisely move the shaping adjustment hydraulic cylinder 7 and the shaping pressure table 8 directly above the first shaping position, preparing for pressure shaping. After the shaping pressure table 8 reaches the predetermined position, the shaping adjustment hydraulic cylinder... Cylinder 7 drives the shaping and adjusting hydraulic rod 14 to extend downward, causing the shaping pressure table 8 to press down vertically. At the same time, the bottom shaping support assembly works in coordination: the bottom shaping support device 12 is on the bottom mounting platform 11. Through the coordinated movement of the bottom shaping X-axis drive mechanism 32 and the bottom shaping Y-axis drive mechanism 34, the bottom shaping hydraulic cylinder 22 is precisely moved to directly below the part of the subframe to be shaped. The bottom shaping hydraulic cylinder 22 drives the bottom shaping hydraulic rod 23 to extend upward, causing the bottom shaping contact table 24 to be lifted upward, contacting and supporting the subframe from the bottom. In this way, the upper shaping pressure table 8 and the lower bottom shaping contact table 24 form a counter-pressure structure. For the part of the subframe that protrudes upward, the shaping pressure table 8 presses it down flat.For areas that are concave or require reverse correction, the bottom shaping contact platform 24 pushes upwards. This coordinated pressure from both top and bottom effectively prevents secondary deformation caused by overall bending or stress concentration in the subframe when subjected to force on one side. It also corrects more complex torsional deformations, significantly improving the shaping effect and dimensional stability. During the pressure shaping process, a pressure detection component is installed in the detection mounting slot at the bottom of the shaping platform 8, including a pressure detector 17 and a shaping pressure plate 18 that directly contacts the surface of the subframe. The pressure detector 17 collects real-time contact pressure data between the shaping pressure plate 18 and the subframe and feeds the data back to the control system. The control system dynamically adjusts the pressure based on the elastic limit, yield strength, and preset shaping process parameters of the subframe aluminum alloy material. When the measured pressure reaches the target correction pressure value, the control system stops increasing the pressure and maintains the pressure for a period of time to fully release the internal stress of the subframe material and complete the plastic deformation. After the pressure holding period, the shaping adjustment hydraulic rod 14 and the bottom shaping hydraulic rod 23 retract respectively, and the shaping pressure table 8 and the bottom shaping contact table 24 disengage from the subframe. The dimensional inspection camera 6 scans and inspects the shaped part again to confirm whether the dimensions have returned to the standard range. If there is still a deviation, the above pressure correction process is repeated. If the inspection is qualified, the positioning slide 4 releases the subframe under the drive of the frame positioning cylinder 20, and the conveying support slide plate 13 sends the shaped chassis aluminum alloy subframe 9 out of the shaping station to enter the next process.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shaping machine for an aluminum alloy subframe of an automobile chassis, comprising: The vehicle comprises a shaping support platform (1), a conveyor drive platform (3), a chassis aluminum alloy subframe (9), a conveyor support slide plate (13), and an auxiliary conveyor platform (15). The inner side of the shaping support platform (1) is fixedly connected to the conveyor drive platform (3), and the inner side of the shaping support platform (1) is fixedly connected to the auxiliary conveyor platform (15). The top surfaces of the conveyor drive platform (3) and the auxiliary conveyor platform (15) are fixedly connected to the conveyor support slide plate (13), and the top surface of the conveyor support slide plate (13) is provided with the chassis aluminum alloy subframe (9). The vehicle is characterized by further comprising: The shaping and adjusting assembly includes a shaping and adjusting device (2), a size detection camera (6), a shaping and adjusting hydraulic cylinder (7), a shaping pressure table (8), and a shaping and adjusting hydraulic rod (14), which is used to perform size detection and shaping on the aluminum alloy subframe of the chassis (9). The shaping and adjusting device (2) is fixedly connected to the inner side of the shaping support table (1), the size detection camera (6) and the shaping and adjusting hydraulic cylinder (7) are fixedly connected to the top of the shaping and adjusting device (2), the shaping and adjusting hydraulic rod (14) is slidably connected to the inner side of the shaping and adjusting hydraulic cylinder (7), and the shaping pressure table (8) is fixedly connected to the output end of the shaping and adjusting hydraulic rod (14). The bottom shaping support assembly includes a bottom shaping support device (12), a bottom shaping hydraulic cylinder (22), a bottom shaping hydraulic rod (23), and a bottom shaping contact platform (24) for bottom support of the aluminum alloy subframe (9) of the chassis. The bottom shaping support device (12) is provided on the top surface of the conveying support slide plate (13). The bottom shaping hydraulic cylinder (22) is fixedly installed on the top of the bottom shaping support device (12). The bottom shaping hydraulic rod (23) is slidably connected to the inner side of the bottom shaping hydraulic cylinder (22). The bottom shaping contact platform (24) is fixedly connected to the outer end of the bottom shaping hydraulic rod (23).

2. The automotive chassis aluminum alloy subframe shaping machine according to claim 1, characterized in that, The shaping and adjusting device (2) consists of a shaping support frame (26), a shaping X-axis drive mechanism (27), a shaping Y-axis drive mechanism (28), a shaping Z-axis drive mechanism (29), and a shaping X-axis auxiliary mechanism (30). The inner side of the shaping support platform (1) is fixedly connected to a symmetrically distributed shaping support frame (26). The top surface of the shaping support frame (26) is fixedly installed with a shaping X-axis drive mechanism (27). The top surface of the other end of the shaping support frame (26) is fixedly installed with a shaping X-axis auxiliary mechanism (30). The top output ends of the shaping X-axis drive mechanism (27) and the shaping X-axis auxiliary mechanism (30) are connected to a shaping Y-axis drive mechanism (28). The output end of the shaping Y-axis drive mechanism (28) is fixedly installed with a shaping Z-axis drive mechanism (29). The lifting output end of the shaping Z-axis drive mechanism (29) is fixedly connected to a size detection camera (6) and a shaping and adjusting hydraulic cylinder (7).

3. The automotive chassis aluminum alloy subframe shaping machine according to claim 2, characterized in that, The bottom of the shaping press (8) is provided with a detection mounting groove, and a pressure detection component is provided on the inner side of the detection mounting groove.

4. The automotive chassis aluminum alloy subframe shaping machine according to claim 3, characterized in that, The pressure detection assembly includes a pressure detector (17) and a shaping plate (18). The pressure detector (17) is fixedly connected to the inner side of the detection mounting groove at the bottom of the shaping plate (8). The shaping plate (18) is fixedly connected to the bottom surface of the shaping adjustment hydraulic cylinder (7). The shaping plate (18) is installed inside the detection mounting groove.

5. The automotive chassis aluminum alloy subframe shaping machine according to claim 1, characterized in that, The top surface of the conveying support slide plate (13) is fixedly connected to a bottom mounting platform (11) that is equidistantly distributed in a rectangle, and a bottom shaping support device (12) is fixedly installed on the top of the bottom mounting platform (11).

6. The automotive chassis aluminum alloy subframe shaping machine according to claim 5, characterized in that, The bottom shaping support device (12) is composed of a bottom shaping support frame (31), a bottom shaping X-axis drive mechanism (32), a bottom shaping Y-axis support frame (33), and a bottom shaping Y-axis drive mechanism (34). The bottom shaping support frame (31) is fixedly connected to the top of the bottom mounting platform (11). The bottom shaping X-axis drive mechanisms (32) are symmetrically distributed and slidably connected to the outer side of the bottom shaping support frame (31). The bottom shaping Y-axis support frame (33) is fixedly connected to the side of the two bottom shaping X-axis drive mechanisms (32). The bottom shaping Y-axis drive mechanism (34) is slidably connected to the outer side of the bottom shaping Y-axis support frame (33). The bottom shaping hydraulic cylinder (22) is fixedly connected to the side of the bottom shaping Y-axis drive mechanism (34).

7. The automotive chassis aluminum alloy subframe shaping machine according to claim 5, characterized in that, The top surface of the conveying support slide plate (13) is fixedly connected to a frame support platform (10) that is equidistantly distributed in a rectangle. The top surface of the frame support platform (10) is slidably connected to a chassis aluminum alloy subframe (9). A frame positioning component is provided on the top of the frame support platform (10).

8. The automotive chassis aluminum alloy subframe shaping machine according to claim 7, characterized in that, The top surface of the frame support platform (10) is fixedly connected with a positioning boss (25), and the top surface of the chassis aluminum alloy subframe (9) is provided with frame positioning holes (19) that are distributed in a rectangular shape at equal intervals. The positioning boss (25) slides inside the frame positioning holes (19) to achieve preliminary positioning of the chassis aluminum alloy subframe (9).

9. The automotive chassis aluminum alloy subframe shaping machine according to claim 7, characterized in that, The frame positioning assembly includes a positioning slide (4), a frame positioning cylinder (20), and a frame positioning slide rod (21). The frame positioning cylinder (20) is fixedly connected to the top surface of the frame support platform (10). The frame positioning slide rod (21) is slidably connected to the inner side of the frame positioning cylinder (20). The positioning slide (4) is fixedly connected to the outer end of the frame positioning slide rod (21). The positioning slide (4) is slidably connected to the top surface of the frame support platform (10).

10. A shaping machine for an aluminum alloy subframe of an automobile chassis according to claim 9, characterized in that, The top side of the frame support platform (10) is fixedly connected with symmetrically distributed guide limiting platforms (5), and the side of the positioning slide (4) is provided with symmetrically distributed limiting slide grooves (16). The guide limiting platform (5) slides inside the limiting slide groove (16).

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