Self-adaptive stress release workbench for inhibiting deformation of laser cutting plate

Abstract

The invention discloses a self-adaptive stress release workbench for restraining deformation of a laser cutting plate, and relates to the field of laser cutting machining, the self-adaptive stress release workbench comprises a rack, a plate clamping frame, a workpiece receiving assembly and a self-adaptive supporting assembly, the plate clamping frame is slidably connected to the rack through a first rail, and the workpiece receiving assembly is slidably connected to the rack through a second rail; the workpiece receiving assembly is slidably connected to the middle of the rack through a second rail and located below the plate clamping frame, the self-adaptive supporting assembly is arranged on the rack in a liftable mode, and the working end of the self-adaptive supporting assembly makes contact with the bottom of a plate clamped and fixed to the plate clamping frame. The working end of the self-adaptive supporting assembly can respond to the stress change in the plate in the cutting process of the plate to generate multidirectional micro displacement, so that dynamic supporting and stress reduction of the plate are achieved. In the cutting process, the internal stress of the plate can be responded and reduced in real time through the dynamic supporting system, and meanwhile precise cooperative control over the supporting assembly and the workpiece receiving system is achieved.

Description

Technical Field

[0001] This invention relates to the field of laser cutting, and more particularly to an adaptive stress relief worktable for suppressing deformation of laser-cut sheet metal. Background Technology

[0002] In the field of laser cutting, especially for cutting large-area thin plates, effectively controlling and reducing workpiece deformation has always been a key technical challenge. Traditional laser cutting tables often employ hollow frame structures or fixed support pin designs, clamping the plate around its perimeter and collecting it after cutting by its own weight. While this method is simple in structure, significant internal stress is generated in the plate during cutting due to localized heating and material separation. The concentrated release of these stresses can lead to plastic deformations such as warping and twisting, severely affecting the flatness and dimensional accuracy of the cut workpiece.

[0003] While existing technologies employ liftable support arrays, their support units are mostly rigid structures, lacking the ability to respond to dynamic stresses during cutting. When the sheet metal undergoes slight deformation due to stress, the rigid support can actually create constraints, exacerbating stress concentration and even causing indentations on the sheet surface. Furthermore, traditional equipment suffers from deficiencies in the coordination between the support components and the workpiece receiving components. The lack of coordinated control during the descent of the support unit and the ascent of the receiving component easily leads to motion interference, affecting work efficiency and potentially damaging the workpiece surface.

[0004] Therefore, how to develop an adaptive stress-relieving worktable for suppressing deformation of laser-cut sheet metal, which can respond in real time through a dynamic support system and reduce the internal stress of the sheet metal during the cutting process, while achieving precise coordinated control of the support components and the workpiece receiving system, has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide an adaptive stress relief worktable for suppressing deformation of laser-cut sheet metal. It can respond in real time during the cutting process through a dynamic support system and reduce the internal stress of the sheet metal, while achieving precise coordinated control of the support components and the workpiece receiving system.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This invention discloses an adaptive stress relief worktable for suppressing deformation of laser-cut sheet metal, comprising a frame, a sheet metal clamping frame, a workpiece receiving assembly, and an adaptive support assembly. The sheet metal clamping frame is slidably connected to the frame via a first track and its position is adjusted along the first track by a first driving device. The workpiece receiving assembly is slidably connected to the middle of the frame via a second track and is located below the sheet metal clamping frame, for receiving the target workpiece cut and separated from the sheet metal. The adaptive support assembly is vertically and flexibly mounted on the frame, and its working end contacts the bottom of the sheet metal clamped and fixed on the sheet metal clamping frame. The working end of the adaptive support assembly can generate multi-directional micro-displacement in response to stress changes inside the sheet metal during the cutting process, thereby achieving dynamic support and stress reduction of the sheet metal.

[0007] Preferably, the adaptive support assembly includes a base plate, multi-stage electric telescopic rods, a top plate, and multiple adaptive support units. The base plate is disposed at the bottom of the frame, the multiple multi-stage electric telescopic rods are mounted on the base plate, the top plate is fixed to the telescopic ends of the multi-stage electric telescopic rods, and the multiple adaptive support units are arranged in an array on the top of the top plate.

[0008] Preferably, the top plate includes multiple independently configured top plate bodies, each of which is independently driven to rise and fall by a corresponding multi-stage electric telescopic rod.

[0009] Preferably, two U-shaped connectors are symmetrically arranged at the bottom of the top plate body along its long side, the telescopic end of the multi-stage electric telescopic rod is fixedly connected to the U-shaped connectors, and the number of the multi-stage electric telescopic rods matches the number of the U-shaped connectors.

[0010] Preferably, the adaptive support unit includes a mounting base, dampers, springs, support pins, and ball joint connectors. The support pins are rotatably connected to the top of the mounting base via the ball joint connectors. Four dampers are symmetrically arranged around the support pins, with the bottom of each damper ball joint connected to the top of the mounting base and the top of each damper hinged to the side wall of the support pin. The springs are sleeved on the piston rods of the dampers, and a limit ring is provided at one end of the piston rod near the support pin. The two ends of the springs abut against the outer surface of the damper and the opposite surface of the limit ring, respectively.

[0011] Preferably, the support pin adopts a split structure, including an upper pin section and a lower pin section connected by threads, and the top end of the upper pin section is rounded.

[0012] Preferably, the plate clamping frame includes a frame and a plurality of clamping members. The frame is slidably connected to the frame via the first track, and the plurality of clamping members are arranged along the length of the frame for clamping and fixing the plate from above.

[0013] Preferably, the workpiece receiving assembly includes a sliding seat and a workpiece support platform. The sliding seat is slidably connected to the frame via the second track, and the workpiece support platform is vertically and flexibly mounted on the sliding seat.

[0014] Compared with the prior art, the beneficial technical effects of the present invention are as follows: 1) By setting an adaptive support unit, the present invention can sense the stress changes inside the plate in real time during the laser cutting process, and actively guide and reduce stress through the universal micro-displacement of the support pin, effectively avoiding the stress concentration phenomenon caused by traditional rigid support, which significantly improves the flatness of the cut workpiece, greatly reduces the scrap rate caused by stress deformation, and improves the stability of product quality. 2) The support system of the present invention adopts a zoned independent control design, which can flexibly adjust the support area according to different cutting paths and workpiece shapes. This effectively avoids the interference problem between the cutting head and the support components, and ensures the comprehensiveness and effectiveness of the support. At the same time, the support pin adopts a split threaded connection structure, which greatly facilitates the replacement and maintenance of worn parts, reduces the maintenance cost of long-term use of the equipment, and improves the economic efficiency of the equipment. 3) This invention achieves seamless connection between the automatic descent of the support unit and the precise ascent of the receiving platform when the workpiece is about to be cut, through the coordinated control of the workpiece receiving component and the adaptive support component. This ensures the smooth descent of the workpiece and effectively avoids motion interference between equipment components. The entire workflow is highly automated, which significantly improves production efficiency while enhancing processing safety, and realizes intelligent control of the processing process. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of an adaptive stress relief workbench for suppressing deformation of laser-cut sheet metal according to the present invention; Figure 2 This is a schematic diagram of the sheet metal clamping frame of the present invention; Figure 3 This is a schematic diagram of the workpiece receiving assembly of the present invention; Figure 4 This is a schematic diagram of the adaptive support component of the present invention; Figure 5 This is a schematic diagram of the adaptive support unit of the present invention.

[0017] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Plate clamping frame; 21. Frame; 22. Clamping component; 3. Workpiece receiving assembly; 31. Sliding seat; 32. Workpiece bearing platform; 4. Adaptive support assembly; 41. Base plate; 42. Multi-stage electric telescopic rod; 43. Top plate; 431. Top plate body; 432. U-shaped connector; 44. Adaptive support unit; 441. Mounting seat; 442. Damper; 443. Spring; 444. Support pin; 445. Ball joint connector; 446. Limiting ring; 5. First track; 6. Second track. Detailed Implementation

[0018] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0019] like Figure 1-5 As shown, an adaptive stress relief worktable for suppressing deformation of laser-cut sheet metal includes a frame 1, a sheet metal clamping frame 2, a workpiece receiving assembly 3, and an adaptive support assembly 4. The sheet metal clamping frame 2 is slidably connected to the frame 1 via a first track 5 and its position is adjusted along the first track 5 by a first driving device. The workpiece receiving assembly 3 is slidably connected to the middle of the frame 1 via a second track 6 and is located below the sheet metal clamping frame 2, for receiving the target workpiece cut and separated from the sheet metal. The adaptive support assembly 4 is vertically and vertically mounted on the frame 1. The working end of the adaptive support assembly 4 contacts the bottom of the sheet metal clamped and fixed on the sheet metal clamping frame 2. The working end of the adaptive support assembly 4 can generate multi-directional micro-displacement in response to stress changes inside the sheet metal during the cutting process, so as to realize dynamic support and stress reduction of the sheet metal.

[0020] Specifically, frame 1 provides a stable mounting foundation for the entire equipment. The workpiece receiving assembly 3 is located below the plate clamping frame 2. When laser cutting is about to be completed, the workpiece receiving assembly 3 can move to the bottom of the cutting area in time to catch the falling workpiece. The adaptive support assembly 4 maintains contact with the bottom surface of the plate through its working end. During the cutting process, it can sense changes in the internal stress of the plate and generate corresponding micro-displacements. This dynamic support method can effectively guide and reduce stress, significantly improving the flatness of the cut workpiece.

[0021] Specifically, the adaptive support assembly 4 includes a base plate 41, multi-stage electric telescopic rods 42, a top plate 43, and multiple adaptive support units 44. The base plate 41 is located at the bottom of the frame 1, the multiple multi-stage electric telescopic rods 42 are installed on the base plate 41, the top plate 43 is fixed to the telescopic ends of the multi-stage electric telescopic rods 42, and the multiple adaptive support units 44 are arranged in an array on the top of the top plate 43.

[0022] Specifically, the base plate 41 of the adaptive support assembly 4 is fixedly installed at the bottom of the frame 1, and the multi-stage electric telescopic rods 42 are evenly distributed on the base plate 41 to provide stable lifting power for the top plate 43. The multiple adaptive support units 44 arranged in an array on the top plate 43 can provide all-round auxiliary support for the plate. The precise control of the multi-stage electric telescopic rods 42 makes the support height adjustable, which can not only fully support the plate, but also make room for the workpiece receiving assembly 3 when needed.

[0023] Specifically, the top plate 43 includes multiple independently arranged top plate bodies 431, and each top plate body 431 is independently driven to rise and fall by the corresponding multi-stage electric telescopic rod 42.

[0024] Specifically, the top plate 43 adopts a zoned independent design, consisting of multiple top plate bodies 431, each of which is independently controlled for lifting by a corresponding multi-stage electric telescopic rod 42. This zoned support design allows the worktable to be adjusted according to the support needs of different areas of the material. When cutting complex-shaped workpieces, the support height of specific areas can be adjusted individually to avoid interference with the cutting path, while ensuring optimal support effect.

[0025] Specifically, two U-shaped connectors 432 are symmetrically arranged at the bottom of the top plate body 431 along its long side. The telescopic ends of the multi-stage electric telescopic rods 42 are fixedly connected to the U-shaped connectors 432, and the number of the multi-stage electric telescopic rods 42 matches the number of the U-shaped connectors 432.

[0026] Specifically, the adaptive support unit 44 includes a mounting base 441, a damper 442, a spring 443, a support pin 444, and a ball joint connector 445. The support pin 444 is rotatably connected to the top of the mounting base 441 via the ball joint connector 445. Four dampers 442 are symmetrically arranged around the support pin 444, and the bottom of the damper 442 is ball joint connected to the top of the mounting base 441. The top of the damper 442 is hinged to the side wall of the support pin 444. The spring 443 is sleeved on the piston rod of the damper 442. A limit ring 446 is provided at one end of the piston rod near the support pin 444. The two ends of the spring 443 abut against the outer surface of the damper 442 and the opposite surface of the limit ring 446, respectively.

[0027] Specifically, the adaptive support unit 44 enables the support pin 444 to rotate in all directions via the ball joint connector 445. Four symmetrically arranged dampers 442 and springs 443 work together to provide controllable damping and restoring forces for the support pin 444. When the sheet metal undergoes stress deformation during cutting, the support pin 444 can generate a slight displacement in the direction of deformation under the action of the ball joint connector 445. At the same time, the dampers 442 absorb vibration energy through the extension and retraction of the piston rod, while the springs 443 provide the necessary preload and reset function, together achieving a smooth release of stress.

[0028] Specifically, the support pin 444 adopts a split structure, including an upper pin section and a lower pin section connected by threads, and the top end of the upper pin section is rounded.

[0029] Specifically, the support pin 444 adopts a split design, with the upper and lower pin sections connected by threads. This structure facilitates the replacement of the severely worn upper pin section, greatly reducing maintenance and operating costs. The rounded corner design at the top of the upper pin section reduces contact stress with the sheet material, preventing scratches on the sheet surface during support. At the same time, the rounded corner structure also facilitates smooth position adjustment of the support pin 444 when the sheet material deforms.

[0030] Specifically, the plate clamping frame 2 includes a frame 21 and a plurality of clamping members 22. The frame 21 is slidably connected to the frame 1 via the first track 5. The plurality of clamping members 22 are arranged along the length of the frame 21 for pressing and fixing the plate from above.

[0031] Specifically, the frame 21 of the sheet metal clamping frame 2 is positioned on the frame 1 via the first track 5, allowing the entire clamping frame to move between different workstations according to processing requirements. Multiple clamping elements 22 are arranged along the length of the frame 21, and their synchronized action through a unified clamping mechanism ensures uniform clamping force applied to the edges of the sheet metal. This overall moving design facilitates rapid adjustment of the processing area during production while maintaining stable clamping of the sheet metal, providing a reliable positioning reference for laser cutting.

[0032] Specifically, the workpiece receiving assembly 3 includes a sliding seat 31 and a workpiece bearing platform 32. The sliding seat 31 is slidably connected to the frame 1 via the second track 6, and the workpiece bearing platform 32 is vertically and flexibly mounted on the sliding seat 31.

[0033] Specifically, the sliding seat 31 of the workpiece receiving assembly 3 moves along the second track 6, enabling it to quickly and accurately position itself below the cutting area. The workpiece support platform 32 is mounted on the sliding seat 31 via a lifting mechanism, and its height can be adjusted according to the receiving requirements of different workpieces. During operation, the workpiece support platform 32 rises to a position close to the plate, and when the workpiece is cut and separated, it can immediately catch the falling workpiece, preventing damage caused by excessive falling distance.

[0034] The usage process of this invention is as follows: First, the operator places the plate to be cut on the frame 21 of the plate clamping frame 2. By adjusting the overall position of the frame 21 along the first track 5 on the frame 1, the area of ​​the plate to be processed is accurately aligned with the working range of the laser cutting head. Then, multiple clamping parts 22 are activated to evenly press the edge of the plate from above, ensuring that the plate remains stably positioned during the processing. Secondly, the multi-stage electric telescopic rod 42 of the adaptive support component 4 is activated, driving the top plate 43 and its multiple adaptive support units 44 to rise steadily until the top of all the support pins 444 are in complete contact with the bottom surface of the plate, forming an all-round auxiliary support network. At this time, the support pins 444 maintain stable contact with the plate under the pre-tightening force of the spring 443, preparing for subsequent stress release. Next, the laser cutting machine begins to cut along the preset path. During the cutting process, the plate will generate internal stress due to heat and material separation. At this time, the support pin 444 of the adaptive support unit 44 will generate a micro displacement in accordance with the stress direction through the omnidirectional rotation capability of the ball joint connector 445. At the same time, the four symmetrically arranged dampers 442 and springs 443 work together to effectively absorb vibration energy and achieve stable stress release, thereby maintaining the stability of the cutting process. Then, when the laser cutting is about to complete the last cut edge of the target workpiece, the cutting operation is paused, and the multi-stage electric telescopic rod 42 of the adaptive support component 4 is controlled to drive the top plate 43 and the adaptive support unit 44 on it to descend to a certain height, making room for the workpiece receiving component 3. At the same time, the pressure sensor set between the mounting base 441 and the base plate 41 monitors and provides feedback on the change of support force in real time. Then, the sliding seat 31 of the workpiece receiving component 3 is controlled to move along the second track 6 to directly below the cutting area, and the workpiece bearing platform 32 is adjusted to rise to a predetermined height close to the bottom surface of the plate through the lifting mechanism, forming a complete workpiece receiving preparation state. Finally, the remaining cutting operations are completed. The completely separated target workpiece falls smoothly onto the workpiece support platform 32 under the action of gravity. Then, the workpiece support platform 32 carries the workpiece down to a safe height. The sliding seat 31 moves out of the working area along the second track 6, completing the workpiece reception and transfer. At the same time, the multi-stage electric telescopic rod 42 of the adaptive support component 4 drives the top plate 43 to descend and reset, preparing for the next processing cycle.

[0035] 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 process, method, article, or apparatus.

[0036] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. An adaptive stress relief worktable for suppressing deformation of laser-cut sheet metal, characterized in that: The assembly includes a frame (1), a plate clamping frame (2), a workpiece receiving component (3), and an adaptive support component (4). The plate clamping frame (2) is slidably connected to the frame (1) via a first track (5) and its position is adjusted along the first track (5) by a first driving device. The workpiece receiving component (3) is slidably connected to the middle of the frame (1) via a second track (6) and is located below the plate clamping frame (2) for receiving the target workpiece cut and separated from the plate. The adaptive support component (4) is vertically and vertically mounted on the frame (1). The working end of the adaptive support component (4) is in contact with the bottom of the plate clamped and fixed on the plate clamping frame (2). The working end of the adaptive support component (4) can generate multi-directional micro-displacement in response to the stress changes inside the plate during the cutting process of the plate, so as to realize the dynamic support and stress reduction of the plate.

2. The adaptive stress relief worktable for suppressing deformation of laser-cut sheet metal according to claim 1, characterized in that: The adaptive support assembly (4) includes a base plate (41), a multi-stage electric telescopic rod (42), a top plate (43), and multiple adaptive support units (44). The base plate (41) is located at the bottom of the frame (1). Multiple multi-stage electric telescopic rods (42) are installed on the base plate (41). The top plate (43) is fixed to the telescopic ends of the multi-stage electric telescopic rods (42). Multiple adaptive support units (44) are arranged in an array on the top of the top plate (43).

3. The adaptive stress relief worktable for suppressing deformation of laser-cut sheet metal according to claim 2, characterized in that: The top plate (43) includes multiple independently set top plate bodies (431), each of which is independently driven to rise and fall by the corresponding multi-stage electric telescopic rod (42).

4. The adaptive stress relief worktable for suppressing deformation of laser-cut sheet metal according to claim 3, characterized in that: Two U-shaped connectors (432) are symmetrically arranged at the bottom of the top plate body (431) along its long side. The telescopic end of the multi-stage electric telescopic rod (42) is fixedly connected to the U-shaped connector (432), and the number of the multi-stage electric telescopic rod (42) matches the number of the U-shaped connector (432).

5. An adaptive stress relief worktable for suppressing deformation of laser-cut sheet metal according to claim 2, characterized in that: The adaptive support unit (44) includes a mounting base (441), dampers (442), springs (443), support pins (444), and ball joint connectors (445). The support pins (444) are rotatably connected to the top of the mounting base (441) via the ball joint connectors (445). Four dampers (442) are symmetrically arranged around the support pins (444), and the bottom of each damper (442) is connected to the top of the mounting base (441). The top of the mounting base (441) is connected by a ball joint, the top of the damper (442) is hinged to the side wall of the support pin (444), the spring (443) is sleeved on the piston rod of the damper (442), a limit ring (446) is provided at one end of the piston rod near the support pin (444), and the two ends of the spring (443) abut against the outer surface of the damper (442) and the opposite surface of the limit ring (446), respectively.

6. An adaptive stress relief worktable for suppressing deformation of laser-cut sheet metal according to claim 5, characterized in that: The support pin (444) adopts a split structure, including an upper pin section and a lower pin section connected by threads, and the top end of the upper pin section is rounded.

7. An adaptive stress relief worktable for suppressing deformation of laser-cut sheet metal according to claim 1, characterized in that: The plate clamping frame (2) includes a frame (21) and a plurality of clamping members (22). The frame (21) is slidably connected to the frame (1) via the first track (5). The plurality of clamping members (22) are arranged along the length of the frame (21) for clamping and fixing the plate from above.

8. An adaptive stress relief worktable for suppressing deformation of laser-cut sheet metal according to claim 1, characterized in that: The workpiece receiving assembly (3) includes a sliding seat (31) and a workpiece carrier (32). The sliding seat (31) is slidably connected to the frame (1) via the second track (6), and the workpiece carrier (32) is vertically mounted on the sliding seat (31).

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