A six-axis roll bending machine special for aerospace sheet metal parts
By utilizing the power and adjustment mechanisms of the six-axis rolling mill, the problem of controlling profile torsion deformation was solved, enabling flexible production of aerospace parts and reducing production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN LINGZHI TECHNOLOGY DEVELOPMENT CO LTD
- Filing Date
- 2025-07-25
- Publication Date
- 2026-07-31
AI Technical Summary
Existing technologies cannot simultaneously control the torsional deformation of profile sections, and traditional manufacturing processes cannot meet the production needs of small batches, multiple varieties, and variable curvature parts in the aerospace field, and are also costly.
This invention provides a six-axis rolling machine specifically designed for bending aerospace sheet metal parts. Through the combination of a power mechanism, an adjustment mechanism, and a tensioning mechanism, it achieves synchronous control of the arc bending and torsional deformation of profiles, adapting to the needs of multi-variety production.
It reduces web warping and flange collapse during profile bending, lowers production costs, and meets the needs of small-batch, multi-variety production in the aerospace field.
Smart Images
Figure CN224574430U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of metal integral bending and forming technology, and in particular to a six-axis rolling machine for specializing in the bending of aerospace sheet metal parts. Background Technology
[0002] Modern aircraft and spacecraft structures widely utilize high-strength aluminum alloy profiles to manufacture components such as curved frames and reinforcing ribs. These components must meet high-precision curved surface profile requirements, such as the leading edge curve of the wing and the curvature of the fuselage bulkhead, to ensure aerodynamic performance, structural strength, and lightweight design. However, traditional manufacturing processes such as segmented welding and machining suffer from problems such as high material waste, stress concentration at joints, and low fatigue life, making it difficult to meet the demands of modern aerospace manufacturing.
[0003] In existing technologies, although three-axis roll bending machines can achieve arc bending in a plane, they cannot simultaneously control the torsional deformation of the profile cross section, resulting in defects such as web warping and flange collapse. Although die pressing and bending is suitable for mass production of single-curvature parts, it is costly and lacks flexibility, making it difficult to meet the production needs of small-batch, multi-variety, variable-curvature parts in the aerospace field. Utility Model Content
[0004] This application provides a six-axis rolling press for aerospace sheet metal parts, which solves the technical problems that three-axis rolling presses cannot synchronously control the torsional deformation of profile sections, and that die bending is difficult to adapt to the production needs of small batches, multiple varieties, and variable curvature parts in the aerospace field.
[0005] The aerospace sheet metal bending six-axis rolling machine provided in this application includes: a housing; a power mechanism installed in the housing; a first wheel set, the first wheel set including a first drive shaft and a second drive shaft arranged in parallel, a first drive wheel located outside the housing and installed on the first drive shaft and a second drive wheel installed on the second drive shaft, the first drive shaft and the second drive wheel being rotatably connected to the housing, and a first channel for the profile to pass through being formed between the first drive wheel and the second drive wheel; and two second wheel sets, each second wheel set including a first driven shaft and a second driven shaft arranged in parallel, a first driven wheel located outside the housing and rotatably installed on the first driven shaft and a second drive wheel rotatably installed on the second driven shaft. The system includes a drive wheel, with a second channel formed between the first driven wheel and the second driven wheel for the profile to pass through; a first adjustment mechanism operably connected to the housing and to the second drive shaft, configured to drive the second drive shaft to translate and adjust the distance between the first drive wheel and the second drive wheel; and two second adjustment mechanisms operably connected to the housing and respectively connected to the two second wheel sets, respectively configured to drive the corresponding second wheel set to move horizontally and adjust the distance between the first driven wheel and the second driven wheel; wherein, the power mechanism is drively connected to the first drive shaft and the second drive shaft and configured to drive the first drive shaft and the second drive shaft to rotate in opposite directions.
[0006] In one possible implementation, the power mechanism includes a first motor, a first transmission assembly, a first gear, a third gear, a fourth gear, and a second gear arranged in parallel and meshing sequentially, a third drive shaft, a fourth drive shaft, a first connecting plate, and a second connecting plate; the third drive shaft and the fourth drive shaft are parallel to the first drive shaft and the second drive shaft, and the third drive shaft is rotatably connected to the housing; the first gear is mounted on the first drive shaft, the second gear is mounted on the second drive shaft, the third gear is mounted on the third drive shaft, and the fourth gear is mounted on the fourth drive shaft; both ends of the first connecting plate are rotatably connected to the third drive shaft and the fourth drive shaft, and both ends of the second connecting plate are rotatably connected to the fourth drive shaft and the second drive shaft; the shaft of the first motor is connected to the first drive shaft through the first transmission assembly.
[0007] In one possible implementation, the first transmission assembly includes a motor gear, a drive gear, and a plurality of transmission gears; the motor gear is mounted on the shaft of the first motor, the plurality of transmission gears mesh sequentially, and the motor gear is connected to the drive gear via the plurality of transmission gears; the drive gear is mounted on the first drive shaft.
[0008] In one possible implementation, the first adjustment mechanism includes a handwheel, a second transmission assembly, and a translation assembly; the handwheel is located outside the housing, the second transmission assembly is mounted on the housing, and the handwheel is connected to the translation assembly via the transmission assembly; the translation assembly is connected to the second drive shaft and is configured to drive the second drive shaft to translate, thereby adjusting the distance between the first drive wheel and the second drive wheel.
[0009] In one possible implementation, the second transmission assembly includes a transmission shaft, a first bevel gear, and a second bevel gear; the transmission shaft is rotatably connected to the housing, and both ends of the transmission shaft are located inside and outside the housing, respectively, with the end of the transmission shaft located outside the housing connected to the handwheel; the first bevel gear is mounted on the end of the transmission shaft located inside the housing, and the second bevel gear is connected to the translation assembly, with the first bevel gear and the second bevel gear meshing.
[0010] In one possible implementation, the translation assembly includes a first slide rail, a first slider, a first worm, a first worm wheel, and a first lead screw; the first slide rail is connected to the housing, and the first slider is slidably connected to the slide rail; wherein, the second drive shaft is rotatably connected to the first slider; the first worm is connected to the transmission assembly, and the first worm meshes with the first worm wheel; the first worm wheel has a threaded hole, the first lead screw is threadedly connected to the first worm wheel, and one end of the first lead screw is connected to the first slider.
[0011] In one possible implementation, the second adjustment mechanism includes a first direction adjustment component and two second direction adjustment components; the first direction adjustment component is connected to the first driven shaft and the second driven shaft and is configured to drive the first driven shaft and the second driven shaft to translate individually or simultaneously along a first direction; the two second direction adjustment components are respectively connected to the first driven shaft and the second driven shaft and are respectively configured to drive the first driven shaft and the second driven shaft to translate along a second direction orthogonal to the first direction.
[0012] In one possible implementation, the first direction adjustment assembly includes a second slide rail, two second sliders, two fastening assemblies, a second motor, a third transmission assembly, and a second lead screw; the second slide rail is connected to the housing along the first direction; the two second sliders are slidably connected to the second slide rail, and the two second direction adjustment assemblies are respectively connected to the two second sliders; the second lead screw passes through the two second sliders sequentially and is arranged along the first direction; the shaft of the second motor is connected to the second lead screw through the third transmission assembly; the two fastening assemblies are mounted on the second lead screw and are operably connected to the two second sliders respectively; each fastening assembly has a first state and a second state; when the fastening assembly is in the first state, the second lead screw drives the second slider to slide on the slide rail through the fastening assembly when rotating; when the fastening assembly is in the second state, the second lead screw is disconnected from the second slider.
[0013] In one possible implementation, the third transmission assembly includes a second worm gear, a second worm, a first pulley, a second pulley, and a belt; the first pulley is mounted on the shaft of the third motor, the second pulley is mounted on the second worm, and the belt is wound around the first pulley and the second pulley; the second worm gear is mounted on one end of the second lead screw and meshes with the second worm.
[0014] In one possible implementation, the fastening assembly includes a pin and a sleeve; the sleeve is rotatably mounted to the second slider, a portion of the sleeve being located outside the second slider, and the portion of the sleeve located outside the slider being provided with an external spline; the pin is operatively connected to the slider and configured to extend into and retract from the external spline.
[0015] In one possible implementation, the second direction adjustment component includes a manual slide connected to the second slider along the second direction; wherein the first driven shaft and the second driven shaft are respectively connected to the slides of the two manual slides.
[0016] In one possible implementation, the six-axis rolling mill equipment for aerospace sheet metal bending further includes: multiple tensioning mechanisms, wherein the tensioning mechanisms are installed on the top of the first wheel set and the top of the two second wheel sets; the tensioning mechanisms are configured to fix the first drive shaft and the second drive shaft, and to fix the first driven shaft and the second driven shaft.
[0017] In one possible implementation, the tensioning mechanism includes a first fixing block, a second fixing block, a fixing frame, and a screw; the first fixing block and the second fixing block are respectively connected to two shaft ends; the fixing frame is rotatably connected to the first fixing block, and the second fixing block is located inside the fixing frame; the screw is threadedly connected to the fixing frame, and one end of the screw extends into the inside of the fixing frame to abut against the second fixing block.
[0018] In one possible implementation, the side of the second fixing frame facing the screw is provided with a groove for the end of the screw to extend into.
[0019] In one possible implementation, the six-axis rolling mill equipment for aerospace sheet metal bending further includes: multiple height adjustment mechanisms, which are respectively installed on the first drive shaft, the second drive shaft, the first driven shaft, and the second driven shaft, and are configured to adjust the height of the first drive wheel, the second drive wheel, the first driven wheel, and the second driven wheel.
[0020] In one possible implementation, the height adjustment mechanism includes two support rings spaced apart and an adjusting nut; the outer surfaces of the two support rings are threaded, and the two support rings are respectively threaded to both ends of the adjusting nut.
[0021] The technical solutions provided in this application embodiment have at least the following technical effects: This application provides a six-axis roller press for aerospace sheet metal bending. When using this six-axis roller press to bend profiles into an arc shape, the profile passes sequentially through the second channel of one second roller group, the first channel of the first roller group, and the second channel of another second roller group. The drive mechanism drives the first and second drive shafts to rotate in opposite directions. The first drive wheel mounted on the first drive shaft and the second drive wheel mounted on the second drive shaft clamp the profile and drive it to move. The first adjustment mechanism can adjust the distance between the first and second drive wheels according to design requirements, and the second adjustment mechanism can adjust the distance between the first driven wheel and the second driven wheel according to design requirements, and drive the second roller group to move horizontally. The first and second adjustment mechanisms work together to allow the bending rate of the profile to be adjusted at any time and to control the torsional deformation of the profile cross-section synchronously, reducing defects such as web warping and flange collapse. This achieves flexible production, adapts to the small-batch, multi-variety production needs of the aerospace field, and reduces production costs. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments of this application or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 and Figure 2 Schematic diagrams of the six-axis rolling mill for aviation applications from different perspectives; Figure 3 and Figure 4 Schematic diagrams of the power mechanism, first wheel set, first adjustment mechanism, pulling mechanism, and height adjustment mechanism provided in the embodiments of this application from different perspectives; Figure 5 A schematic diagram of the structure of the first adjustment mechanism provided in the embodiments of this application; Figure 6 This is a schematic diagram of the structure of the second wheel assembly and the second adjustment mechanism provided in the embodiments of this application; Figure 7 This is a schematic diagram of the structure in which the second slider is connected to the second lead screw via a fastening assembly, as provided in an embodiment of this application. Figure 8 A schematic diagram of the fastening assembly and the second lead screw provided in the embodiments of this application; Figure 9 This is a schematic diagram of the height adjustment mechanism provided in an embodiment of this application; Figure 10 A cross-sectional view of the height adjustment mechanism provided in an embodiment of this application.
[0024] Reference numerals: 1-Box; 2-Power mechanism; 21-First motor; 22-First transmission assembly; 221-Motor gear; 222-Drive gear; 223-Transmission gear; 23-First gear; 24-Second gear; 25-Third gear; 26-Fourth gear; 27-Third drive shaft; 28-Fourth drive shaft; 29-First connecting plate; 30-Second connecting plate; 3-First wheel set; 31-First drive shaft; 32-Second drive shaft; 33-First drive wheel; 34-Second drive wheel; 4-Second wheel set; 41-First driven shaft; 42-Second driven shaft; 43-First driven wheel; 44-Second driven wheel; 5-First adjusting mechanism; 51-Handwheel; 52-Second transmission assembly; 521-Transmission shaft; 522-First bevel gear; 523-Second bevel gear; 53-Translation assembly; 531-First slide rail; 532-First slider; 533-First worm; 534-First worm wheel; 535-First lead screw; 6-Second adjusting mechanism; 61-First direction adjusting assembly; 611-Second slide rail; 612-Second slider; 613-Fastening assembly; 6131-Pin; 6132-Sleeve; 614-Second motor; 615-Third transmission assembly; 6151-Second worm wheel; 6152-Second worm; 6153-First pulley; 6154-Second pulley; 6155-Belt; 616-Second lead screw; 62-Second direction adjusting assembly; 7-Tightening mechanism; 71-First fixing block; 72-Second fixing block; 73-Fixing frame; 74-Screw; 8-Height adjusting mechanism; 81-Support ring; 82-Adjusting nut. Detailed Implementation
[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0026] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.
[0027] This application provides a six-axis rolling machine specifically designed for bending aerospace sheet metal parts, such as... Figures 1 to 10 As shown, the six-axis roller press equipment for bending aerospace sheet metal parts includes a housing 1, a power mechanism 2, a first roller group 3, two second roller groups 4, a first adjustment mechanism 5, and two second adjustment mechanisms 6.
[0028] The power mechanism 2 is installed in the housing 1.
[0029] The first wheel assembly 3 includes a first drive shaft 31 and a second drive shaft 32 arranged in parallel, and a first drive wheel 33 located outside the housing 1 and mounted on the first drive shaft 31 and a second drive wheel 34 mounted on the second drive shaft 32. The first drive shaft 31 and the second drive wheel 34 are rotatably connected to the housing 1, and a first channel for the profile to pass through is formed between the first drive wheel 33 and the second drive wheel 34.
[0030] Each second wheel group 4 includes a first driven shaft 41 and a second driven shaft 42 arranged in parallel, and a first driven wheel 43 located outside the housing 1 and rotatably mounted on the first driven shaft 41 and a second driven wheel 44 rotatably mounted on the second driven shaft 42, with a second channel for the profile to pass through formed between the first driven wheel 43 and the second driven wheel 44; The first adjustment mechanism 5 is operably connected to the housing 1 and to the second drive shaft 32, and is configured to drive the second drive shaft 32 to translate in order to adjust the distance between the first drive wheel 33 and the second drive wheel 34.
[0031] Two second adjustment mechanisms 6 are operably connected to the housing 1 and respectively connected to two second wheel sets 4. They are respectively configured to drive the corresponding second wheel sets 4 to move in the horizontal direction and to adjust the distance between the first driven wheel 43 and the second driven wheel 44. The power mechanism 2 is connected to the first drive shaft 31 and the second drive shaft 32 and is configured to drive the first drive shaft 31 and the second drive shaft 32 to rotate in opposite directions.
[0032] When using this aerospace sheet metal bending six-axis roller press to bend profiles into an arc shape, the profile passes sequentially through the second channel of one of the second roller groups 4, the first channel of the first roller group 3, and the second channel of the other second roller group 4. The drive mechanism drives the first drive shaft 31 and the second drive shaft 32 to rotate in opposite directions. The first drive wheel 33 mounted on the first drive shaft 31 and the second drive wheel 34 mounted on the second drive shaft 32 clamp the profile and drive the profile to move. The second roller group 4 before the profile enters the first roller group 3 is used to guide the profile. The second roller group 4 after the profile exits from the second roller group 4 is used to maintain the shape of the bent profile.
[0033] The operator operates the first adjusting mechanism 5 to adjust the distance between the first driving wheel 33 and the second driving wheel 34 according to design requirements; the operator operates the second adjusting mechanism 6 to adjust the distance between the first driven wheel 43 and the second driven wheel 44 according to design requirements, and drives the second wheel group 4 to move horizontally as a whole. In the aerospace sheet metal bending six-axis rolling machine provided in this application embodiment, the first adjusting mechanism 5 and the second adjusting mechanism 6 work together to allow the bending rate of the profile to be adjusted at any time, and to simultaneously control the torsional deformation of the profile cross-section, reducing defects such as web warping and flange collapse, realizing flexible production, adapting to the small-batch, multi-variety production needs of the aerospace field, and reducing production costs.
[0034] like Figure 3 and Figure 4As shown, in some embodiments of this application, the power mechanism 2 includes a first motor 21, a first transmission assembly 22, a first gear 23, a third gear 25, a fourth gear 26, and a second gear 24 arranged in parallel and meshing sequentially, a third drive shaft 27, a fourth drive shaft 28, a first connecting plate 29, and a second connecting plate 30. The third drive shaft 27 and the fourth drive shaft 28 are parallel to the first drive shaft 31 and the second drive shaft 32, and the third drive shaft 27 is rotatably connected to the housing 1. The first gear 23 is mounted on the first drive shaft 31, the second gear 24 is mounted on the second drive shaft 32, the third gear 25 is mounted on the third drive shaft 27, and the fourth gear 26 is mounted on the fourth drive shaft 28. The two ends of the first connecting plate 29 are rotatably connected to the third drive shaft 27 and the fourth drive shaft 28, and the two ends of the second connecting plate 30 are rotatably connected to the fourth drive shaft 28 and the second drive shaft 32. The shaft of the first motor 21 is connected to the first drive shaft 31 through the first transmission assembly 22.
[0035] The first motor 21 generates power, and the first transmission assembly 22 transmits the power of the first motor 21 to drive the first drive shaft 31 to rotate, causing the first drive wheel 33 mounted on the first drive shaft 31 to rotate. When the first drive shaft 31 rotates, the first gear 23 mounted on the second rotating shaft drives the third gear 25 to rotate, and the third gear 25 drives the second gear 24 to rotate through the fourth gear 26, thereby causing the second drive shaft 32 to rotate. The second drive wheel 34 mounted on the second drive shaft 32 rotates, and the rotation direction of the second drive wheel 34 is opposite to the rotation direction of the first drive wheel 33.
[0036] The above structure can transmit power from the first motor 21 to the first drive wheel 33 and the second drive wheel 34, and while ensuring that the rotation direction of the second drive wheel 34 is opposite to that of the first drive wheel 33, it can also ensure that when the first adjusting mechanism 5 drives the second drive shaft 32 to translate, the power of the first motor 21 can still be transmitted to the first drive wheel 33 and the second drive wheel 34. Specifically, when the first adjusting mechanism 5 drives the second drive shaft 32 to translate, the second drive shaft 32 drives the fourth drive shaft 28 through the second connecting plate 30. The first connecting plate 29 and the second connecting plate 30 can ensure that when the fourth drive shaft 28 moves, the fourth gear 26 can still mesh with the third gear 25 and the second gear 24, so that the power transmission chain formed by the first gear 23, the third gear 25, the fourth gear 26 and the second gear 24 maintains normal operation, thereby ensuring that the power of the first motor 21 can always reach the first drive wheel 33 and the second drive wheel 34, and that the rotation direction of the second drive wheel 34 is opposite to that of the first drive wheel 33.
[0037] Furthermore, Figure 3 and Figure 4The first transmission assembly 22 shown includes a motor gear 221, a drive gear 222, and a plurality of transmission gears 223. The motor gear 221 is mounted on the shaft of the first motor 21, the plurality of transmission gears 223 mesh sequentially, and the motor gear 221 is connected to the drive gear 222 through the plurality of transmission gears 223; the drive gear 222 is mounted on the first drive shaft 31.
[0038] When the first transmission component 22 is working, the motor shaft drives the motor gear 221 to rotate. The motor gear 221 transmits power to the drive gear 222 through multiple transmission gears 223. The drive gear 222 installed on the first drive shaft 31 drives the first drive shaft 31 to rotate.
[0039] In this six-axis rolling mill for aerospace sheet metal bending, the types of motor gear 221 and drive gear 222, as well as the types and quantities of multiple transmission gears 223, can be determined based on the setting position of the first motor 21. For example, the motor gear 221 is a cylindrical gear, the transmission gears 223 include three cylindrical gears and one bevel gear, and the drive gear 222 is a bevel gear.
[0040] In other embodiments of this application, the power mechanism 2 may also have other structures. For example, the first gear 23, the second gear 24, the third gear 25, and the fourth gear 26 in the above embodiments may be replaced by the first belt pulley 6153, the second belt pulley 6154, the third belt pulley 6155, and the fourth belt pulley 6155, respectively. The third belt pulley 6155 and the fourth belt pulley 6155 are double-groove belt pulleys. The first belt pulley 6153 and the third belt pulley 6155 are wound with belts 6155. The third belt pulley 6155 and the fourth belt pulley 6155 are wound with belts 6155. The fourth belt pulley 6155 and the second belt pulley 6154 are wound with belts 6155. The first transmission component 22 may be a coupling, and the shaft of the first motor 21 is connected to the first drive shaft 31 through the coupling.
[0041] like Figure 5 As shown, in some embodiments of this application, the first adjustment mechanism 5 includes a handwheel 51, a second transmission assembly 52, and a translation assembly 53. The handwheel 51 is located outside the housing 1, the second transmission assembly 52 is mounted on the housing 1, and the handwheel 51 is connected to the translation assembly 53 via the transmission assembly. The translation assembly 53 is connected to the second drive shaft 32 and is configured to drive the second drive shaft 32 to translate, thereby adjusting the distance between the first drive wheel 33 and the second drive wheel 34.
[0042] When the operator operates the first adjustment mechanism 5, they rotate the handwheel 51 located outside the housing 1. The handwheel 51 transmits power to the translation component 53 via the second transmission assembly 52, which in turn drives the second drive shaft 32 to translate. By controlling the rotation direction of the handwheel 51, the operator controls the translation direction of the second drive shaft 32, causing the second drive wheel 34 to move closer to or further away from the first drive wheel 33, thus changing the width of the first channel. Therefore, in the aforementioned first adjustment mechanism 5, the operator controls the torsional deformation of the profile cross-section by controlling the rotation direction and angle of the handwheel 51.
[0043] Continue to refer to Figure 5 The second transmission assembly 52 includes a transmission shaft 521, a first bevel gear 522, and a second bevel gear 523. The transmission shaft 521 is rotatably connected to the housing 1, and its two ends are located inside and outside the housing 1, respectively. The end of the transmission shaft 521 located outside the housing 1 is connected to a handwheel 51. The first bevel gear 522 is mounted on the end of the transmission shaft 521 located inside the housing 1, and the second bevel gear 523 is connected to the translation assembly 53. The first bevel gear 522 and the second bevel gear 523 mesh.
[0044] When the operator turns the handwheel 51, the handwheel 51 drives the first bevel gear 522 to rotate through the transmission shaft 521, and the second bevel gear 523, which meshes with the first bevel gear 522, rotates, and then the second bevel gear 523 drives the translation component 53 to work.
[0045] Furthermore, Figure 5 The translation assembly 53 shown includes a first slide rail 531, a first slider 532, a first worm 533, a first worm wheel 534, and a first lead screw 535. The first slide rail 531 is connected to the housing 1, and the first slider 532 is slidably connected to the slide rail. A second drive shaft 32 is rotatably connected to the first slider 532. The first worm 533 is connected to the transmission assembly and meshes with the first worm wheel 534. The first worm wheel 534 has a threaded hole, and the first lead screw 535 is threadedly connected to the first worm wheel 534, with one end of the first lead screw 535 connected to the first slider 532.
[0046] When the translation component 53 is driven by the second transmission component 52, the first screw 74 rotates and the first worm gear 534 rotates. The first worm gear 534 drives the first lead screw 535 to move. The first lead screw 535 drives the first slider 532 to move on the first slide rail 531, causing the second drive shaft 32 mounted on the first slider 532 to move, thereby changing the distance between the first drive wheel 33 and the second drive wheel 34.
[0047] like Figures 6 to 8As shown, in some embodiments of this application, the second adjustment mechanism 6 includes a first direction adjustment component 61 and two second direction adjustment components 62. The first direction adjustment component 61 is connected to the first driven shaft 41 and the second driven shaft 42, and is configured to drive the first driven shaft 41 and the second driven shaft 42 to translate individually or simultaneously along the first direction. The two second direction adjustment components 62 are respectively connected to the first driven shaft 41 and the second driven shaft 42, and are respectively configured to drive the first driven shaft 41 and the second driven shaft 42 to translate along a second direction orthogonal to the first direction.
[0048] When the first direction adjustment component 61 drives the first driven shaft 41 and the second driven shaft 42 to move simultaneously, the second wheel assembly 4 moves as a whole along the first direction. When the first direction adjustment component 61 drives the first driven shaft 41 to move or when the first direction adjustment component 61 drives the second driven shaft 42 to move, the distance between the first driven wheel 43 and the second driven wheel 44 is adjusted. When both second direction adjustment components 62 drive the first driven shaft 41 and the second driven shaft 42 to move in the same direction, the second wheel assembly 4 can move as a whole along the second direction. When one of the second direction adjustment components 62 drives the first driven shaft 41 or the second driven shaft 42 to move, the distance between the first driven wheel 43 and the second driven wheel 44 is adjusted. When both second direction adjustment components 62 drive the first driven shaft 41 and the second driven shaft 42 to move in opposite directions, the distance between the first driven wheel 43 and the second driven wheel 44 is adjusted.
[0049] Since the first direction adjustment component 61 can drive the second wheel group 4 to move along the first direction, and the second direction adjustment component 62 can drive the second wheel group 4 to move along the second direction, the first direction adjustment component 61 and the second direction adjustment component 62 work at the same time, and can drive the second wheel group 4 to translate in any direction.
[0050] Specifically, refer to Figure 6The first direction adjustment assembly 61 includes a second slide rail 611, two second sliders 612, two fastening assemblies 613, a second motor 614, a third transmission assembly 615, and a second lead screw 616. The second slide rail 611 is connected to the housing 1 along a first direction. The two second sliders 612 are slidably connected to the second slide rail 611, and the two second direction adjustment assemblies 62 are respectively connected to the two second sliders 612. The second lead screw 616 passes through the two second sliders 612 sequentially and is positioned along the first direction. The shaft of the second motor 614 is connected to the second lead screw 616 via the third transmission assembly 615. The two fastening assemblies 613 are mounted on the second lead screw 616 and are operably connected to the two second sliders 612 respectively. Each fastening assembly 613 has a first state and a second state. When the fastening assembly 613 is in the first state, the second lead screw 616, when rotating, drives the second slider 612 to slide on the slide rail via the fastening assembly 613. When the fastening assembly 613 is in the second state, the second lead screw 616 is disconnected from the second slider 612.
[0051] When the first direction adjustment component 61 is working, the second motor 614 drives the second lead screw 616 to rotate via the third transmission component 615. When both fastening components 613 are in the first state, the rotating second lead screw 616 drives the two second sliders 612 to slide synchronously along the second slide rail 611 through the thread action, thereby driving the two connected second direction adjustment components 62 to achieve overall movement in the first direction, so that the second wheel group 4 translates as a whole in the first direction. If it is necessary to adjust the position of one of the second sliders 612 individually, the corresponding fastening component 613 is switched to the second state. At this time, the second slider 612 is disengaged from the second lead screw 616 and remains stationary, while the other second slider 612 can still continue to move with the rotation of the second lead screw 616. By alternately switching the states of the two fastening components 613, both the linkage adjustment of the two second sliders 612 can be achieved, and the position of a single slider can be controlled independently. Throughout the operation of the first direction adjustment component 61, the second slide rail 611 provides guiding support for the slider movement, ensuring motion accuracy.
[0052] The aforementioned first direction adjustment component 61 drives the lead screw to rotate via the second motor 614, achieving a dual technical effect in conjunction with the switchable fastening component 613: firstly, when both fastening components 613 are simultaneously in the first state, the lead screw transmission principle enables the synchronous displacement of the two second sliders 612, allowing the second wheel group 4 to move as a whole in the first direction; secondly, by switching one of the fastening components 613 to the second state, the mechanical coupling between the second slider 612 corresponding to the second state fastening component 613 and the second lead screw 616 can be released, enabling independent position adjustment of a single second slider 612. This satisfies both the rigidity requirement for the overall translation of the second wheel group 4 and the ability to adjust the distance between the first driven wheel 43 and the second driven wheel 44. Simultaneously, the cooperation between the second slider 612 and the second slide rail 611 ensures the linear accuracy of the motion trajectory, ultimately achieving high-precision control.
[0053] Specifically, refer to Figure 6 The third transmission assembly 615 includes a second worm gear 6151, a second worm 6152, a first belt pulley 6153, a second belt pulley 6154, and a belt 6155. The first belt pulley 6153 is mounted on the shaft of the third motor, the second belt pulley 6154 is mounted on the second worm 6152, and the belt 6155 is wound around the first belt pulley 6153 and the second belt pulley 6154. The second worm gear 6151 is mounted on one end of the second lead screw 616 and meshes with the second worm 6152.
[0054] When the second motor 614 drives the second lead screw 616 to rotate via the third transmission assembly 615, the shaft of the third motor drives the first belt pulley 6153 to rotate, which in turn drives the second belt pulley 6154 to rotate synchronously, thereby causing the second worm 6152 to rotate. Since the second worm 6152 and the second worm wheel 6151 installed at the end of the second lead screw 616 form a worm gear meshing relationship, the rotation of the worm is converted into the circumferential motion of the worm wheel, which drives the second lead screw 616 to rotate.
[0055] The aforementioned third transmission component 615 transmits power between the motor and the second worm gear 6152 via a belt 6155. It utilizes the large reduction ratio of the worm gear pair to increase torque output. At the same time, the self-locking characteristic of the worm gear pair can prevent the second lead screw 616 from being driven in reverse, thereby ensuring the positional stability of the first driven wheel 43 and the second driven wheel 44.
[0056] Specifically, such as Figure 7 and Figure 8As shown, the fastening assembly 613 includes a pin 6131 and a sleeve 6132. The sleeve 6132 is rotatably mounted to the second slider 612, with a portion of the sleeve 6132 located outside the second slider 612, and the portion of the sleeve 6132 located outside the slider is provided with an external spline. The pin 6131 is operatively connected to the slider and configured to extend into and retract from the external spline.
[0057] When the pin 6131 is pushed into the external spline of the sleeve 6132, the pin 6131 engages with the external spline to form a rigid connection. At this time, the sleeve 6132 and the second slider 612 are locked and rotate relative to each other. The fastening assembly 613 is in the first state, and the rotating second lead screw 616 can drive the second slider 612 to move along the second slide rail 611 through the thread action. When the pin 6131 is removed from the external spline, the pin 6131 is disconnected from the external spline, the fastening assembly 613 is in the second state, the sleeve 6132 can rotate freely relative to the slider, and when the second lead screw 616 rotates, it only drives the sleeve 6132 to rotate freely and cannot transmit power. The second slider 612 remains stationary.
[0058] The aforementioned fastening assembly 613 enables rapid connection / disconnection of the slider and the lead screw drive chain through the extension and retraction of the pin 6131, thereby flexibly controlling the movement state of the second slider 612. The structure utilizes spline engagement to ensure transmission rigidity, while the linear operation of the pin 6131 facilitates state switching.
[0059] Specifically, the second direction adjustment assembly 62 includes a manual slide table connected to the second slider 612 along the second direction. The first driven shaft 41 and the second driven shaft 42 are respectively connected to the slides of the two manual slide tables.
[0060] like Figure 1 As shown in some embodiments of this application, the six-axis rolling mill equipment for aerospace sheet metal bending also includes multiple tensioning mechanisms 7. Tensioning mechanisms 7 are installed on the top of the first wheel group 3 and the top of the two second wheel groups 4. The tensioning mechanisms 7 are configured to fix the first drive shaft 31 and the second drive shaft 32, and to fix the first driven shaft 41 and the second driven shaft 42.
[0061] After the distance between the first drive wheel 33 and the second drive wheel 34 is adjusted, the second drive shaft 32 is fixed using the tensioning mechanism 7, which reduces the impact of the profile passing through the first channel on the relative position of the first drive wheel 33 and the second drive wheel 34 and enhances the rigidity of the first wheel set 3. Similarly, after the distance between the first driven wheel 43 and the second driven wheel 44 is adjusted, the second driven shaft 42 is fixed using the tensioning mechanism 7, which reduces the impact of the profile passing through the second channel on the relative position of the first driven wheel 43 and the second driven wheel 44.
[0062] Specifically, Figure 3 The specific structure of the tensioning mechanism 7 is shown. The tensioning mechanism 7 includes a first fixing block 71, a second fixing block 72, a fixing frame 73, and a screw 74. The first fixing block 71 and the second fixing block 72 are respectively connected to two shaft ends. The fixing frame 73 is rotatably connected to the first fixing block 71, and the second fixing block 72 is located inside the fixing frame 73. The screw 74 is threadedly connected to the fixing frame 73, and one end of the screw 74 extends into the inside of the fixing frame 73 to abut against the second fixing block 72.
[0063] When it is necessary to tighten the two shaft ends, the operator rotates the screw 74 to push the screw 74 inward along the thread of the fixed frame 73. The end of the screw 74 gradually presses against the second fixed block 72 located inside the fixed frame 73. Since the first fixed block 71 forms a linkage structure with the second fixed block 72 through the rotatable fixed frame 73, the pushing force of the screw 74 will be converted into an axial pulling force on the two fixed blocks, thereby tightening the two shaft ends connected by the tightening mechanism 7 towards the center.
[0064] Furthermore, the side of the second fixing frame 73 facing the screw 74 is provided with a groove for the end of the screw 74 to extend into.
[0065] The groove provides precise positioning and accommodating space for the end of the screw 74, ensuring that the screw 74 can stably and firmly press against the second fixing block 72 when rotating and advancing, preventing the screw 74 from slipping or deviating during operation, thereby improving the reliability and operational stability of the tensioning mechanism 7.
[0066] like Figure 3 and Figure 6 As shown in some embodiments of this application, the six-axis rolling machine for aerospace sheet metal bending also includes multiple height adjustment mechanisms 8. The multiple height adjustment mechanisms 8 are respectively installed on the first drive shaft 31, the second drive shaft 32, the first driven shaft 41 and the second driven shaft 42, and are configured to adjust the height of the first drive wheel 33, the second drive wheel 34, the first driven wheel 43 and the second driven wheel 44.
[0067] Specifically, refer to Figure 9 and Figure 10 The height adjustment mechanism 8 includes two spaced-apart support rings 81 and an adjusting nut 82. The outer surfaces of both support rings 81 are threaded, and the two support rings 81 are threadedly connected to both ends of the adjusting nut 82.
[0068] When the height of one of the first driving wheel 33, the second driving wheel 34, the first driven wheel 43, and the second driven wheel 44 needs to be adjusted, the support ring 81 in the corresponding height adjustment mechanism 8 is replaced with a support ring 81 of the required height.
[0069] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.
[0070] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.
Claims
1. A six-axis roll bending machine for space panel metal parts, characterized in that, include: Box; A power mechanism, which is mounted on the housing; The first wheel assembly includes a first drive shaft and a second drive shaft arranged in parallel, a first drive wheel located outside the housing and mounted on the first drive shaft and a second drive wheel mounted on the second drive shaft, the first drive shaft and the second drive wheel being rotatably connected to the housing, and a first channel for the profile to pass through being formed between the first drive wheel and the second drive wheel; Two second wheel sets, each second wheel set including a first driven shaft and a second driven shaft arranged in parallel, and a first driven wheel located outside the housing and rotatably mounted on the first driven shaft and a second driven wheel rotatably mounted on the second driven shaft, with a second channel formed between the first driven wheel and the second driven wheel for the profile to pass through; A first adjustment mechanism, operably connected to the housing and connected to the second drive shaft, is configured to drive the second drive shaft to translate in order to adjust the distance between the first drive wheel and the second drive wheel; as well as Two second adjustment mechanisms are operably connected to the housing and respectively connected to the two second wheel sets. They are respectively configured to drive the corresponding second wheel set to move in the horizontal direction and to adjust the distance between the first driven wheel and the second driven wheel. The power mechanism is connected to the first drive shaft and the second drive shaft and is configured to drive the first drive shaft and the second drive shaft to rotate in opposite directions.
2. The six-axis roll bender apparatus for space panel metal parts according to claim 1, wherein, The power mechanism includes a first motor, a first transmission assembly, a first gear, a third gear, a fourth gear and a second gear arranged in parallel and meshing in sequence, a third drive shaft, a fourth drive shaft, a first connecting plate and a second connecting plate. The third drive shaft and the fourth drive shaft are parallel to the first drive shaft and the second drive shaft, and the third drive shaft is rotatably connected to the housing; The first gear is mounted on the first drive shaft, the second gear is mounted on the second drive shaft, the third gear is mounted on the third drive shaft, and the fourth gear is mounted on the fourth drive shaft; The two ends of the first connecting plate are rotatably connected to the third drive shaft and the fourth drive shaft, and the two ends of the second connecting plate are rotatably connected to the fourth drive shaft and the second drive shaft; The shaft of the first motor is connected to the first drive shaft via the first transmission assembly.
3. The six-axis roll bender apparatus for space panel metal parts according to claim 1, wherein, The first adjustment mechanism includes a handwheel, a second transmission assembly, and a translation assembly; The handwheel is located outside the housing, the second transmission assembly is installed in the housing, and the handwheel is connected to the translation assembly through the transmission assembly; The translation component is connected to the second drive shaft and is configured to drive the second drive shaft to translate, thereby adjusting the distance between the first drive wheel and the second drive wheel.
4. The six-axis roll bender apparatus for space panel metal parts according to claim 3, wherein, The translation component includes a first slide rail, a first slider, a first worm gear, a first worm wheel, and a first lead screw; The first slide rail is connected to the housing, and the first slider is slidably connected to the slide rail; wherein the second drive shaft is rotatably connected to the first slider; The first worm is connected to the transmission assembly, and the first worm meshes with the first worm wheel; The first worm gear has a threaded hole, the first lead screw is threadedly connected to the first worm gear, and one end of the first lead screw is connected to the first slider.
5. The six-axis roll bender apparatus of claim 1, wherein, The second adjustment mechanism includes a first direction adjustment component and two second direction adjustment components; The first direction adjustment component is connected to the first driven shaft and the second driven shaft, and is configured to drive the first driven shaft and the second driven shaft to translate individually or simultaneously along the first direction; The two second-direction adjustment components are respectively connected to the first driven shaft and the second driven shaft, and are respectively configured to drive the first driven shaft and the second driven shaft to translate along a second direction orthogonal to the first direction.
6. The special six-axis roller bed apparatus for space panel metal parts roll bending according to claim 5, characterized in that, The first direction adjustment assembly includes a second slide rail, two second sliders, two fastening assemblies, a second motor, a third transmission assembly, and a second lead screw; The second slide rail is connected to the housing along the first direction; The two second sliders are slidably connected to the second slide rail, and the two second direction adjustment components are respectively connected to the two second sliders; The second lead screw passes through the two second sliders in sequence and is positioned along the first direction; The shaft of the second motor is connected to the second lead screw via the third transmission assembly; The two fastening components are mounted on the second lead screw and are operably connected to the two second sliders respectively; each fastening component has a first state and a second state; when the fastening component is in the first state, the second lead screw rotates and drives the second slider to slide on the slide rail through the fastening component; when the fastening component is in the second state, the second lead screw and the second slider are disconnected.
7. The six-axis rolling machine apparatus for space panel rolling according to claim 6, wherein, The fastening assembly includes a pin and a sleeve; The sleeve is rotatably mounted on the second slider, the sleeve portion is located outside the second slider, and the portion of the sleeve located outside the slider is provided with an external spline; The pin is operably connected to the slider and is configured to extend into and retract from the external spline.
8. The six-axis roll bender apparatus of claim 1, wherein, Also includes: Multiple tensioning mechanisms are provided, with the tensioning mechanism installed on the top of the first wheel set and the top of the two second wheel sets; The tensioning mechanism is configured to fix the first drive shaft and the second drive shaft, and to fix the first driven shaft and the second driven shaft.
9. The six-axis rolling machine apparatus for space panel rolling according to claim 8, wherein, The tensioning mechanism includes a first fixing block, a second fixing block, a fixing frame, and a screw. The first fixing block and the second fixing block are respectively connected to the two shaft ends; The fixed frame is rotatably connected to the first fixed block, and the second fixed block is located inside the fixed frame; The screw is threaded to the fixing frame, and one end of the screw extends into the inside of the fixing frame to abut against the second fixing block.
10. The six-axis roll bender apparatus of claim 1, wherein, Also includes: A plurality of height adjustment mechanisms respectively installed in the first driving shaft, the second driving shaft, the first driven shaft, and the second driven shaft are configured to adjust heights of the first driving wheel, the second driving wheel, the first driven wheel, and the second driven wheel.