An aircraft wing spar precision machining device

Abstract

The application discloses an aircraft wing spar precision machining device and relates to the technical field of spar machining.The device comprises a workbench, a support frame and a driving mechanism are arranged on the workbench, the support frame is rotationally connected to the workbench, and a clamping plate for clamping a spar is arranged on the support frame; the driving mechanism has a first stroke for driving the clamping plate to approach the spar and a second stroke for driving the support frame to rotate. The aircraft wing spar precision machining device provided by the application can convey the spar in a horizontal state through a conveying roller shaft, can drive the clamping plate to clamp and fix the spar through the first stroke of the driving mechanism, and can drive the support frame and the spar to synchronously overturn through the second stroke of the driving mechanism, so that the spar is overturned from the horizontal state to a vertical state. In this way, the spar can be conveniently conveyed and can be overturned to the vertical state to receive subsequent machining and detection processes.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of wing spar machining, and in particular to an aircraft wing spar precision machining device. BACKGROUND

[0002] The wing spar is a main structural component of the aircraft wing, extends along the length direction of the wing, and is mainly responsible for supporting the wing structure of the aircraft and bearing various force loads generated during flight. In the machining process of the wing spar, the wing spar generally needs to be clamped and fixed to facilitate the smooth progress of the machining or detection process.

[0003] For example, a patent document with the name "A feeding device for aircraft part machining" and the authorization announcement number CN117862931B and the authorization announcement date May 24, 2024, which includes a bottom plate, a feeding plate, a pushing and pressing device for pushing the wing spar from the feeding plate to the feeding plate, and an automatic clamping device installed on the feeding plate. The invention can improve the efficiency of feeding and clamping of the aircraft wing spar.

[0004] In the prior art, the wing spar needs to be clamped in an upright state for machining or detection, and the wing spar is relatively thin and is prone to tilting when it is upright, which is not convenient for conveying and clamping in the upright state. SUMMARY

[0005] The purpose of the present application is to provide an aircraft wing spar precision machining device to solve the above problems in the prior art.

[0006] In order to achieve the above purpose, the present application provides the following technical scheme:

[0007] An aircraft wing spar precision machining device, comprising a workbench, wherein the workbench is provided with:

[0008] A support frame rotatably connected to the workbench, the support frame being provided with a clamping plate for clamping the wing spar;

[0009] A driving mechanism having a first stroke for driving the clamping plate to approach the wing spar and a second stroke for driving the support frame to rotate.

[0010] The aircraft wing spar precision machining device described above, wherein the driving mechanism comprises a movable block slidably connected to the workbench, the movable block being hingedly connected to an active rod, and the other end of the active rod being hingedly connected to the support frame.

[0011] The aircraft wing spar precision machining device described above, wherein the support frame is rotatably connected to a gear, and the support frame is slidably connected to two racks, the two racks being located on both sides of the gear and being in meshing engagement with the gear, and the ends of the two racks away from each other being fixedly connected to the two clamping plates, respectively.

[0012] The aircraft wing spar precision machining device, the driving mechanism further comprises an elastic member, the first end of the elastic member is hinged to a rack, and the second end is movably arranged on the support frame.

[0013] The aircraft wing spar precision machining device, the first stroke comprises a forward stroke in which the second end of the elastic member is driven away from the first end to drive the clamping plate to abut against the spar and a reverse stroke in which the first end of the elastic member is driven away from the second end to drive the clamping plate away from the spar.

[0014] The aircraft wing spar precision machining device, the driving mechanism further comprises a connecting block fixed on a rack, and the workbench is slidably connected with a driving block.

[0015] The aircraft wing spar precision machining device, the second end of the elastic member is hinged to a movable rod, and the driving block is located between the movable block and the connecting block.

[0016] The aircraft wing spar precision machining device, when the driving block moves between the movable block and the connecting block, the elastic member drives the clamping plate to abut against the spar.

[0017] The aircraft wing spar precision machining device, when the driving block moves to the side of the connecting block, the connecting block drives the clamping plate away from the spar, and at this time, the elastic member is stretched; when the driving block moves to the side of the movable block, the movable block drives the support frame to overturn, and at this time, the elastic member continues to be stretched to force the clamping plate to abut against the spar.

[0018] The aircraft wing spar precision machining device, the movable block is provided with a locking assembly, and at the beginning of the movement stroke of the driving block against the movable block, the locking assembly locks the driving block and the movable block.

[0019] In the above technical solution, the aircraft wing spar precision machining device provided by the application can convey the wing spar in a horizontal state through the conveying roller shaft, and when the wing spar is conveyed to the position of the support frame, the first stroke of the driving mechanism can drive the clamping plate to clamp and fix the wing spar, and the second stroke of the driving mechanism can drive the support frame and the wing spar to overturn synchronously, so that the wing spar is turned from the horizontal state to the vertical state, thereby facilitating the conveying of the wing spar and turning the wing spar into the vertical state to accept subsequent machining and detection processes. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained based on these drawings.

[0021] Figure 1 The overall structural schematic diagram provided by the embodiment of the present application is shown in the figure.

[0022] Figure 2 The reverse processing structural schematic diagram provided by the embodiment of the present application is shown in the figure.

[0023] Figure 3 The side view provided by the embodiment of the present application is shown in the figure.

[0024] Figure 4 The movable rod structural schematic diagram provided by another embodiment of the present application is shown in the figure.

[0025] Figure 5 The wing spar vertical state structural schematic diagram provided by another embodiment of the present application is shown in the figure.

[0026] Figure 6 The support plate vertical state structural schematic diagram provided by another embodiment of the present application is shown in the figure.

[0027] Figure 7 The driving block structural schematic diagram provided by another embodiment of the present application is shown in the figure.

[0028] Figure 8 The driving block structural schematic diagram provided by another embodiment of the present application is shown in the figure. Figure 7 The enlarged structural schematic diagram of A in the figure is shown in the figure.

[0029] Figure 9 The wedge-shaped groove structural schematic diagram provided by another embodiment of the present application is shown in the figure.

[0030] Figure 10 The driving block and movable block locking structural schematic diagram provided by another embodiment of the present application is shown in the figure.

[0031] Explanation of reference signs:

[0032] 1, workbench; 101, wing spar; 102, support part; 2, support frame; 3, clamping plate; 4, conveying roller shaft; 5, movable block; 6, movable rod; 7, fitting groove; 8, baffle; 9, adaptive groove; 10, gear; 11, rack; 12, protruding part; 13, elastic member; 14, connecting block; 15, driving block; 16, bolt; 17, avoiding spring; 18, wedge-shaped groove; 19, extension part; 20, insertion hole. DETAILED DESCRIPTION

[0033] In order for those skilled in the art to better understand the technical solutions of the present application, further detailed description of the present application will be made in combination with the drawings.

[0034] With reference to Figures 1-10 The embodiment of the present application provides an aircraft wing spar precision machining device, which comprises a workbench 1, a supporting frame 2 and a driving mechanism are arranged on the workbench 1, the supporting frame 2 is rotationally connected to the workbench 1, and a clamping plate 3 for clamping a wing spar 101 is arranged on the supporting frame 2; the driving mechanism has a first stroke for driving the clamping plate 3 to be close to the wing spar 101 and a second stroke for driving the supporting frame 2 to rotate.

[0035] Specifically, conveying rollers 4 are generally arranged on the workbench 1 to convey the wing spar 101, and a power source can be arranged on the workbench 1 to drive the conveying rollers 4 to rotate, so that the wing spar 101 in a horizontal state is conveyed to a suitable position (the supporting frame 2) on the workbench 1, which are all prior art and will not be described herein. The innovation of the embodiment of the present application lies in that the supporting frame 2 is arranged on the workbench 1, a plurality of extension structures are arranged on the supporting frame 2, the plurality of extension structures are staggered with the plurality of conveying rollers 4 on the workbench 1, and the interference between the supporting frame 2 and the conveying rollers 4 is avoided as much as possible, so that the wing spar 101 in the horizontal state can be conveniently conveyed; a plurality of groups of clamping plates 3 are arranged on the supporting frame 2, one group of clamping plates 3 comprises two clamping plates 3 arranged symmetrically, the two clamping plates 3 are located on the same extension structure of the supporting frame 2, and the two clamping plates 3 are respectively located on two sides of the wing spar 101, so that the wing spar 101 can be clamped and fixed when the two clamping plates 3 are close to each other; the driving mechanism can be a combination of a linear driving structure and a rotating structure, the linear driving structure can be a cylinder or a hydraulic rod in the prior art, which is arranged on a supporting plate to drive the clamping plate 3 to move on the supporting plate, so as to drive the clamping plate 3 to be close to or away from the wing spar 101, and then the wing spar 101 is clamped and fixed or the clamping and fixing of the wing spar 101 is released; the rotating structure can be a motor structure in the prior art, which is arranged on the workbench 1 to drive the supporting frame 2 to rotate on the workbench 1, so as to drive the wing spar 101 to be turned over by 90 degrees on the workbench 1, so that the wing spar 101 in the horizontal state on the conveying roller 4 is turned over to a vertical state, and the subsequent machining or detection process is facilitated. The advantage of such arrangement is that the wing spar 101 in the horizontal state can be conveyed by the conveying roller 4, when the wing spar 101 is conveyed to the position of the supporting frame 2, the first stroke of the driving mechanism can drive the clamping plate 3 to clamp and fix the wing spar 101, and then the second stroke of the driving mechanism can drive the supporting frame 2 and the wing spar 101 to be turned over synchronously, so that the wing spar 101 is turned over from the horizontal state to the vertical state, so that the wing spar 101 is conveniently conveyed and turned over to the vertical state to accept the subsequent machining and detection process.

[0036] As Figures 2-3As shown, in the embodiment, the support frame 2 is turned over by 90 degrees to rotate the wing spar 101 to the vertical state for processing or detection. Optionally, the workbench 1 is provided with a support portion 102 on one side. After the clamping plate 3 clamps the wing spar 101, the support frame 2 is turned over by 180 degrees to drive the wing spar 101 to turn over on the support portion 102. In this way, the reverse side of the wing spar 101 is exposed for processing. The support frame 2 forces the wing spar 101 to closely contact the support portion 102 to cooperate with the clamping plate 3 to limit the wing spar 101 on the support portion 102, facilitating the processing or detection of the reverse side of the wing spar 101. After the reverse side of the wing spar 101 is processed, the support frame 2 drives the wing spar 101 to return to the conveying roller shaft 4 of the workbench 1, so that the wing spar 101 can remain in the horizontal state and continue to be conveyed. Optionally, an additional conveying roller shaft 4 (not shown) can be arranged on the support portion 102. After the processing of the reverse side of the wing spar 101 is completed, the clamping plate 3 is driven away from the wing spar 101 to release the clamping and fixing of the wing spar 101, so that the wing spar 101 can be conveyed on the conveying roller shaft 4 on the support portion 102.

[0037] In another embodiment of the present application, as an alternative to the above-mentioned support frame 2 driven to turn over by the motor structure, further, the driving mechanism includes a movable block 5 slidingly connected to the workbench 1, the movable block 5 is hinged with a movable rod 6, and the other end of the movable rod 6 is hinged with the support frame 2. Specifically, the workbench 1 is provided with an embedded groove 7, the embedded groove 7 is matched with the support frame 2, and the inner wall of the embedded groove 7 is provided with a baffle 8. When the support frame 2 is turned to the horizontal state, it can be embedded in the embedded groove 7 and lapped to the baffle 8. The end of the support frame 2 is rotationally connected to the inner wall of the embedded groove 7, so that the other end of the support frame 2 can drive the wing spar 101 to turn over above the workbench 1 when it is turned, so as to maximize the height of the wing spar 101, facilitating processing or detection. The movable block 5 is slidingly connected to the bottom wall of the embedded groove 7, the support frame 2 is provided with an adaptive groove 9 (the adaptive groove 9 is formed between two adjacent extension structures on the support frame 2, and when the support frame 2 is turned to the horizontal state, the conveying roller shaft 4 on the workbench 1 is located in one adaptive groove 9), and the two ends of the movable rod 6 are respectively hinged with the movable block 5 and the support frame 2 (the inner wall of the adaptive groove 9 or the outer wall of the extension structure). When the movable block 5 moves along the embedded groove 7 to the hinge point of the support frame 2 and the workbench 1, the movable rod 6 can abut against the support frame 2 and drive the support frame 2 to turn over, so that the support frame 2 drives the wing spar 101 to turn by 90 degrees to the vertical state. Conversely, when the movable block 5 moves reversely, it can drive the support frame 2 and the wing spar 101 to turn to the horizontal state to continue conveying the wing spar 101. The advantage of this arrangement is that in the embodiment, a linear driving structure is arranged on the workbench 1 to drive the movable block 5 to move along the embedded groove 7, thereby driving the support frame 2 to turn over (by 90 degrees). This driving mode is more stable than direct motor driving, and can avoid the position deviation of the support frame 2 and the wing spar 101 thereon.

[0038] As an alternative to the above-mentioned straight-line driving structure to drive the clamping plates 3 to approach the wing spar 101, preferably, the support frame 2 is rotatably connected with a gear 10, and the support frame 2 is slidably connected with two racks 11, both of which are located on both sides of the gear 10 and are in mesh with the gear 10, and the ends of the two racks 11 away from each other are respectively fixed with two clamping plates 3. Specifically, a group of clamping plates 3 on the support frame 2 is located between two adjacent conveying roller shafts 4, and two clamping plates 3 in a group of clamping plates 3 are respectively located on both sides of the support frame 2, so that the conveying roller shafts 4 can convey the wing spar 101 to between the two clamping plates 3; the gear 10 is rotatably connected to the inner wall of the adaptive groove 9, and two protruding portions 12 are formed on the inner wall of the adaptive groove 9, the two protruding portions 12 are respectively located on the upper and lower sides of the gear 10, the two racks 11 (the part without tooth) are respectively slidably connected in the two protruding portions 12, and the end of the rack 11 away from the center of the support frame 2 is fixed with a clamping plate 3; the advantage of such arrangement is that when the gear 10 rotates, it can drive the two racks 11 to slide along the corresponding protruding portions 12, thereby driving the two clamping plates 3 to approach or move away from each other; compared with the above-mentioned scheme of driving one clamping plate 3 by a straight-line driving structure, in this embodiment, driving the gear 10 to rotate by a rotating structure or driving one rack 11 to move by a straight-line driving structure can drive two clamping plates 3 to move synchronously and reversely, thereby clamping and fixing the two sides of the wing spar 101 at the same time.

[0039] Further, the driving mechanism further comprises an elastic member 13, a first end of the elastic member 13 is hinged with one rack 11, and a second end of the elastic member 13 is movably arranged on the support frame 2. The first stroke comprises a forward stroke of driving the second end of the elastic member 13 away from the first end to drive the clamping plate 3 to abut against the spar 101 and a reverse stroke of driving the first end of the elastic member 13 away from the second end to drive the clamping plate 3 away from the spar 101. Specifically, the elastic member 13 can be selected from the existing technology of a tension spring structure, the first end of which is hinged on the lower rack 11, and the second end of which is movably arranged on the support frame 2 (the movable arrangement can be selected from the sliding arrangement); in this way, the tension spring can drive the lower rack 11 to move close to the hinge point of the support frame 2 and the workbench 1, thereby driving the right clamping plate 3 to move close to the spar 101, and at the same time, the gear 10 and the other rack 11 can also drive the left clamping plate 3 to move close to the spar 101 synchronously, thereby driving the two clamping plates 3 to move close to the spar 101 synchronously to elastically clamp the spar 101; in the above embodiment, the first stroke of the driving mechanism can drive the clamping plate 3 to move close to the spar 101, in the present embodiment, the driving mechanism can be selected from the combination of the abutting structure and the elastic member 13, the abutting structure can abut against the end of the elastic member 13 to force the first end of the elastic member 13 to move away from the second end or force the second end of the elastic member 13 to move away from the first end; in the present embodiment, when the second end is forced to move away from the first end by the abutting structure (i.e., the abutting structure forces the second end of the elastic member 13 to move on the support frame 2), the elastic member 13 is stretched, thereby increasing the tension of the elastic member 13 on the lower rack 11, and further increasing the clamping force of the clamping plate 3 on the spar 101, so as to avoid the situation that the spar 101 tilts and falls when it is flipped; conversely, when the first end is forced to move away from the second end by the abutting structure, the lower rack 11 and the corresponding clamping plate 3 move reversely to move away from the spar 101, thereby driving the other clamping plate 3 to move away from the spar 101 synchronously through the gear 10 and the other rack 11, so as to keep a certain distance between the two clamping plates 3, thereby facilitating the spar 101 to be conveyed to the support frame 2 through the conveying roller shaft 4. The advantage is that the first stroke of the driving mechanism is divided into the forward stroke and the reverse stroke, the forward stroke can drive the two clamping plates 3 to move close to the spar 101 synchronously to adapt to the elastic clamping of the spar 101, and the reverse stroke can force the two clamping plates 3 to move away from the spar 101 synchronously to adapt to the conveying of the spar 101.

[0040] In still another embodiment of the present application, as an alternative to the above-mentioned conflict structure, the driving mechanism further comprises a connecting block 14 fixed on the rack 11, and the workbench 1 is slidably connected with a driving block 15. The second end of the elastic member 13 is hingedly connected with the movable rod 6, and the driving block 15 is located between the movable block 5 and the connecting block 14. Specifically, the driving block 15 and the movable block 5 are adapted to each other, and both are slidably connected on the bottom wall of the fitting groove 7, so that the driving block 15 can conflict with the movable block 5 when moving along the bottom wall of the fitting groove 7; the connecting block 14 is fixed on the bottom of the lower rack 11 and extends to the moving stroke of the driving block 15, and can conflict with the connecting block 14 when the driving block 15 moves away from the movable block 5 along the fitting groove 7, so as to force the corresponding clamping plate 3 to move away from the spar 101, thereby driving the two clamping plates 3 to move away from the spar 101 synchronously; in this embodiment, the first end of the elastic member 13 is hingedly connected with the lower rack 11, and the second end is hingedly connected with the movable rod 6 (i.e. the second end of the elastic member 13 is movably arranged on the support frame 2 through the movable rod 6); in this embodiment, a linear driving structure can be arranged on the workbench 1 to drive the driving block 15 to move along the fitting groove 7, and the linear driving structure can be a cylinder or a lead screw structure in the prior art, which is not shown and will not be described here.

[0041] When the driving block 15 moves between the movable block 5 and the connecting block 14, the elastic member 13 drives the clamping plate 3 to abut against the wing beam 101. When the driving block 15 moves towards the connecting block 14, the connecting block 14 drives the clamping plate 3 away from the wing beam 101, and at this time, the elastic member 13 is stretched. When the driving block 15 moves towards the movable block 5, the movable block 5 drives the support frame 2 to flip, and at this time, the elastic member 13 is continuously stretched to further force the clamping plate 3 to abut against the wing beam 101. Specifically, when the driving block 15 moves between the movable block 5 and the connecting block 14, the support frame 2 is turned into the embedded groove 7 under the action of gravity and is placed on the baffle 8. At this time, the position of the movable rod 6 and the movable block 5 is in a specific position under the action of the gravity of the support frame 2, so that the second end of the elastic member 13 is in a specific position. At this time, the elastic member 13 forces the first end to approach the second end by the elastic force of the elastic member 13, so as to drive the clamping plate 3 to approach the wing beam 101 to elastically clamp the wing beam 101. When the driving block 15 moves away from the movable block 5 and abuts against the connecting block 14, the connecting block 14 and the corresponding clamping plate 3 can be driven away from the wing beam 101 by the driving block 15. At this time, the elastic member 13 is further stretched, and until the two clamping plates 3 are away from the wing beam 101 by a certain distance, the driving block 15 stops moving and keeps abutting against the connecting block 14. At this time, the clamping of the wing beam 101 can be released or the wing beam 101 is horizontally conveyed to the support frame 2 by the conveying roller shaft 4. When the wing beam 101 moves above the support frame 2, the driving block 15 is reset between the movable block 5 and the connecting block 14, so that the clamping plate 3 can be elastically clamped to the wing beam 101 again under the action of the elastic member 13. Then, the driving block 15 moves away from the connecting block 14 and abuts against the movable block 5 to force the movable block 5 to approach the hinge point of the support frame 2 and the workbench 1, so as to drive the support frame 2 to flip. In the process, the angle between the movable rod 6 and the support frame 2 (the lower gear rack 11) becomes larger, so that the elastic member 13 is further stretched. Until the support frame 2 is flipped by 90 degrees to the vertical state, the elastic member 13 is stretched to a large extent, so as to force the clamping plate 3 to clamp and fix the wing beam 101 by a large elastic force, thereby forcing the wing beam 101 to keep in the vertical state and avoiding the position of the wing beam 101 from deviating to affect the subsequent processing or detection process.

[0042] The advantage is that the driving block 15 can be driven to move in the embedded groove 7 to abut against the movable block 5 or the connecting block 14, so as to force the two clamping plates 3 to move away from the wing beam 101 synchronously, or make the two clamping plates 3 clamp the wing beam 101 under the action of the elastic member 13, or force the support frame 2 to flip and further increase the clamping force of the two clamping plates 3 on the wing beam 101, so as to adapt to the operation of the clamping plate 3 and the flipping of the support frame 2.

[0043] It should be noted that the support frame 2 is provided with a plurality of sets of clamping plates 3 and movable blocks 5 structures along the length direction, and the synchronous operation of the plurality of sets of driving blocks 15 can drive the plurality of sets of clamping plates 3 to operate synchronously to clamp different positions of the wing spar 101; the width of the wing spar 101 near one end of the fuselage is greater than the other end, in this embodiment, the clamping plate 3 has a certain elastic clamping range, which can adapt to the clamping and fixing of different positions of the wing spar 101; preferably, a plurality of elastic members 13 can be arranged between the movable rod 6 and the corresponding rack 11, and in the process of turning over of the support frame 2, the plurality of elastic members 13 are adapted to operate to increase the clamping force of the two clamping plates 3 on the wing spar 101, so that the wing spar 101 is stably clamped and fixed by the plurality of elastic members 13 on the support frame 2, thereby reducing the influence of the gravity of the wing spar 101 on the clamping structure.

[0044] In another embodiment of the present application, further, the movable block 5 is provided with a locking assembly, which locks the driving block 15 and the movable block 5 at the beginning of the movement of the driving block 15 against the movable block 5. The locking assembly comprises a latch 16 slidingly connected to the movable block 5, the latch 16 being sleeved with an escape spring 17, one end of the escape spring 17 being fixed to the outer wall of the latch 16, and the other end being fixed to the movable block 5, so as to force the latch 16 away from the support frame 2 through the escape spring 17; a wedge-shaped slot 18 is formed in the bottom wall of the fitting groove 7, the wedge-shaped slot 18 being smoothly connected to the bottom wall of the fitting groove 7, and the width of the wedge-shaped slot 18 being smaller than the width of the driving block 15, so that the driving block 15 can directly pass through the wedge-shaped slot 18 without being affected by the wedge-shaped slot 18 when moving along the fitting groove 7, an extension 19 is formed on the side of the driving block 15 close to the movable block 5, and a insertion hole 20 is formed in the extension 19. When the support frame 2 is about to be rotated to the horizontal state, the movable block 5 drives the latch 16 to move to the position of the wedge-shaped slot 18, and the latch 16 gradually enters the wedge-shaped slot 18 under the action of the escape spring 17, until the support frame 2 is rotated to the horizontal state, the latch 16 moves to the bottom of the wedge-shaped slot 18, and the height of the latch 16 is lower than the height of the extension 19, at this time, the driving block 15 can abut against the outer wall of the movable block 5 through the extension 19, so as to force the movable block 5 away from the connecting block 14, in the process, the latch 16 can overcome the elastic force of the escape spring 17 and move upward by abutting against the bottom wall of the wedge-shaped slot 18, so as to force the latch 16 to be inserted into the insertion hole 20, so that the movable block 5 and the driving block 15 can be kept in the locked state in the subsequent movement process, which is convenient for subsequent resetting of the movable block 5 through the driving block 15, so as to drive the support frame 2 to be reset to the horizontal state; conversely, when the latch 16 moves to the position of the wedge-shaped slot 18 again, the escape spring 17 forces the latch 16 to enter the wedge-shaped slot 18 again, so that the latch 16 moves out of the insertion hole 20, thereby releasing the locking of the driving block 15 and the movable block 5, so that the driving block 15 can move away from the movable block 5. The advantage of such arrangement is that at the beginning of the movement of the driving block 15 against the movable block 5, the latch 16 can be forced to be inserted into the insertion hole 20 through the wedge-shaped slot 18, so as to lock the movable block 5 and the driving block 15, which is convenient for driving the movable block 5 through the driving block 15, conversely, when the latch 16 moves to the position of the wedge-shaped slot 18 again, the latch 16 can be forced to move out of the insertion hole 20 and be inserted into the escape slot through the escape spring 17, so as to release the locking of the movable block 5 and the driving block 15.

[0045] The above has described certain exemplary embodiments of the present application by way of illustration only, and it is needless to say that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present application. Therefore, the above drawings and descriptions are illustrative in nature, and should not be construed as limiting the scope of protection of the claims of the present application.

Claims

1. A precision machining device for aircraft wing spars, comprising a worktable, characterized in that, The workbench is equipped with: A support frame is rotatably connected to the workbench, and the support frame is provided with clamping plates for holding the wing beam; The drive mechanism has a first stroke that drives the clamping plate close to the wing beam and a second stroke that drives the support frame to rotate. The drive mechanism includes a movable block slidably connected to the worktable, a movable rod hinged to the movable block, and the other end of the movable rod hinged to the support frame; A gear is rotatably connected to the support frame, and two racks are slidably connected to the support frame. The two racks are located on both sides of the gear and mesh with the gear. The ends of the two racks that are far apart from each other are respectively fixed to two clamping plates. The drive mechanism also includes an elastic element, the first end of which is hinged to a rack and the second end of which is hinged to a movable rod, and the drive block is located between the movable block and the connecting block; The drive mechanism also includes a connecting block fixed on a rack, and the drive block is slidably connected to the worktable; The workbench is equipped with a fitting groove that fits into the support frame; The movable block is provided with a locking component, which includes a pin slidably connected to the movable block. A relief spring is sleeved on the pin. One end of the relief spring is fixed to the outer wall of the pin, and the other end is fixed to the movable block, thereby forcing the pin away from the support frame through the relief spring. A wedge-shaped groove is constructed on the bottom wall of the fitting groove. The wedge-shaped groove is smoothly connected to the bottom wall of the fitting groove, and the width of the wedge-shaped groove is smaller than the width of the drive block. By moving the drive block within the fitting groove, it can abut against the movable block or connecting block, thereby forcing the two clamping plates to move away from the wing beam synchronously, or causing the two clamping plates to clamp the wing beam under the action of the elastic element, or forcing the support frame to flip and increasing the clamping force of the two clamping plates on the wing beam, thus adapting to the operation of the clamping plates and the flipping of the support frame.

2. The precision machining device for aircraft wing spars according to claim 1, characterized in that, The first stroke includes a forward stroke that drives the second end of the elastic element away from the first end to cause the clamping plate to abut against the spar, and a reverse stroke that drives the first end of the elastic element away from the second end to cause the clamping plate to abut against the spar.

3. The precision machining device for aircraft wing spars according to claim 1, characterized in that, When the drive block moves between the movable block and the connecting block, the elastic element causes the clamping plate to abut against the wing beam.

4. The precision machining device for aircraft wing spars according to claim 3, characterized in that, When the drive block moves toward the connecting block, the connecting block causes the clamping plate to move away from the wing beam, at which point the elastic element is stretched; when the drive block moves toward the movable block, the movable block causes the support frame to flip, at which point the elastic element continues to stretch to force the clamping plate to contact the wing beam.

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