A milling device for milling a plurality of rudder blades

Abstract

The application discloses a milling rudder surface device capable of clamping multiple rudder pieces, which comprises a base, the upper surface of the base is provided with multiple sets of milling station clamping seats along the length direction, one side of the milling station clamping seat is fixedly provided with a positioning pin, the upper surface of the milling station clamping seat is fixedly provided with two sets of supporting plates, and the upper surface of the milling station clamping seat is provided with four sets of clamping blocks. Through the setting of a bidirectional positioning module, the central clamping hydraulic cylinder is used to drive double-end pressing arms to simultaneously press the middle part of the rudder pieces on the adjacent two sets of milling station clamping seats, and the side road clamping hydraulic cylinder is used to drive single-end pressing arms to press the edge of the rudder pieces on the end milling station clamping seat, synchronous pressing and fixing of all the rudder pieces are realized, the problems of low clamping efficiency and inconsistent pressing force of the rudder pieces caused by the traditional clamping mode of locking the rudder pieces one by one are avoided, meanwhile, the central clamping hydraulic cylinder and the side road clamping hydraulic cylinder adopt the same oil supply oil way control, the synchronism of the pressing actions is guaranteed, all the rudder pieces maintain the unified positioning reference in the milling process, and the consistency of the milling profiles of the rudder pieces is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of rudder surface milling equipment technology, specifically to a rudder surface milling device capable of clamping multiple rudder blades. Background Technology

[0002] In the milling process of aircraft rudder blades, since the rudder blades have specific aerodynamic contours, they need to be continuously milled along the contour trajectory by a milling cutter on a machining center. Therefore, multiple rudder blades need to be clamped on the clamping seat of the milling rudder surface device at the same time so as to complete the synchronous milling of multiple rudder blades at one time.

[0003] Existing clamping devices typically have independent clamping mechanisms on each clamping seat. Operators need to lock the pressure plates or clamps at each station one by one to complete the clamping and fixing of all rudder plates.

[0004] However, since each clamping mechanism operates independently and sequentially, not only is the clamping preparation time long and the operation steps cumbersome, but it is also difficult to keep the clamping force consistent between different stations, which easily leads to uneven force on each rudder blade, resulting in poor consistency of the rudder surface profile after milling. At the same time, during the clamping process, there is no action correlation between the first and last locking stations, which cannot guarantee the synchronization of all rudder blades at the moment of milling cutter entry, further exacerbating the risk of milling positioning datum deviation, making it difficult to meet the aerodynamic profile accuracy requirements of aerospace rudder surfaces. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to address the issue of poor consistency of milling contours of multiple rudder blades during milling due to the clamping method in the prior art, and to provide a milling device for multiple rudder blades.

[0006] To address the problems mentioned in the background art, the present invention provides a milling device for clamping multiple rudder blades, characterized in that it includes a base for simultaneously milling multiple rudder blades, the upper surface of the base having multiple sets of milling station clamping seats distributed along the length direction, a positioning pin fixedly installed on one side of each milling station clamping seat, two sets of support plates fixedly installed on the upper surface of each milling station clamping seat, four sets of clamping blocks provided on the upper surface of each milling station clamping seat, a lateral positioning hydraulic cylinder provided on the side of each milling station clamping seat away from the positioning pin, and a bidirectional positioning module provided on the upper surface of the base for integrally positioning the rudder blades to be processed placed on the support plates to ensure the consistency of the milling contour of multiple rudder blades;

[0007] The bidirectional positioning module includes a central clamping hydraulic cylinder disposed between two adjacent sets of milling station clamping seats. A movable column is fixedly connected to the end of the piston rod of the central clamping hydraulic cylinder, and a double-headed pressure arm is rotatably connected to the top of the movable column. A guide cylinder is fixedly installed at the bottom of the central clamping hydraulic cylinder, and the guide cylinder slides in cooperation with the piston rod of the central clamping hydraulic cylinder. A side clamping hydraulic cylinder is fixedly installed on the upper surface of the base. A movable rod is fixedly connected to the top of the piston rod of the side clamping hydraulic cylinder. A bracket is fixedly installed on the upper surface of the side clamping hydraulic cylinder, and a single-headed pressure arm is rotatably installed on the top inner wall of the bracket. The end of the single-headed pressure arm is hinged to the top of the movable rod.

[0008] Furthermore, the central clamping hydraulic cylinder is located at the center of the two adjacent sets of milling station clamping seats, and the two ends of the double-headed pressure arm are respectively located at the center of the two sets of support plates on the two sides of the milling station clamping seats.

[0009] Furthermore, the positioning pin and the piston rod end of the lateral positioning hydraulic cylinder are both located at the center of the length direction of the pallet, and the upper surfaces of the two sets of pallets on opposite sides are provided with limit ears.

[0010] Furthermore, the four sets of clamping blocks are arranged in pairs on both sides of the tray, and the clamping blocks are arranged in the shape of right-angled trapezoids with their bottom edges facing one side of the tray. Each pair of clamping blocks is arranged corresponding to a set of trays.

[0011] Furthermore, the number of the side clamping hydraulic cylinders is set to two sets, and the two sets of side clamping hydraulic cylinders are respectively set on the outside of the milling station clamping seat at the end, and the single-head pressure arm faces the side of the milling station clamping seat at the end.

[0012] Furthermore, the milling station clamping base is provided with an anti-deviation component to support the position of the pallet. The anti-deviation component includes an installation groove inside the milling station clamping base. A support block and a connecting block are detachably installed inside the installation groove. A T-shaped groove is provided on the upper surface of the support block. A T-shaped block that matches the size of the T-shaped groove is fixedly installed at the bottom of the clamping block. A pin is fixedly installed on the side of the clamping block near the pallet. Insertion holes that match the size of the pins are provided on the inner walls of both sides of the pallet.

[0013] Furthermore, both sides of the support block and the connecting block are provided with protrusions, and the two sides of the mounting groove are provided with recessed cavities that are adapted to the size of the protrusions. The surface of the support block near the connecting block is inclined, and the end of the connecting block is complementary to the side shape of the support block.

[0014] Furthermore, the upper surface of the support block is flush with the upper surface of the milling station clamping seat, and the upper surface of the connecting block is abutted against the upper surface of the support plate by bolts.

[0015] Furthermore, the clamping block is provided with a protective guide assembly on the side surface near the support plate to facilitate the placement of the rudder blade and prevent deviation. The protective guide assembly includes a rotating rod rotatably mounted on the inner wall of the side of the clamping block. A contact strip is fixedly connected to the end of the rotating rod, and a sliding rod is fixedly mounted on the bottom side wall of the contact strip. A fan-shaped groove that cooperates with the sliding rod is opened on the side wall of the clamping block.

[0016] Furthermore, the top and edges of the contact strip are rounded.

[0017] The present invention, by adopting the above technical solution, can bring the following beneficial effects:

[0018] 1. This invention provides a dedicated milling machine for rudder surfaces. By setting up a bidirectional positioning module, the synchronous clamping function of multiple rudder pieces is integrated into the milling fixture. A central clamping hydraulic cylinder drives a double-headed pressure arm to simultaneously press down the middle of the rudder pieces on two adjacent clamping seats, while a side-clamping hydraulic cylinder drives a single-headed pressure arm to press down the edge of the rudder piece on the end clamping seat. This achieves synchronous clamping and fixing of all rudder pieces, forming a unified milling machining datum for multiple rudder pieces in a single clamping operation. This avoids the problems of low clamping efficiency and inconsistent clamping force among rudder pieces caused by individual locking in traditional separate fixtures used with milling machines. Furthermore, the central clamping hydraulic cylinder and the side-clamping hydraulic cylinder are controlled by the same oil supply circuit, ensuring the synchronicity of each clamping action and uniform force on all rudder pieces during milling. This guarantees the consistency of the milled contour surface and the aerodynamic shape accuracy of each rudder piece, solving the problems of poor contour surface accuracy and low clamping efficiency caused by inconsistent clamping positioning in the milling of multiple rudder pieces in existing technologies.

[0019] 2. This invention incorporates an anti-deviation component. An installation groove is created inside the clamping base, housing a support block and a connecting block. The T-shaped block at the bottom of the clamping block slides into the T-shaped groove on the support block, restricting the clamping block's vertical detachment. Simultaneously, the insertion pins on the side of the clamping block and the insertion holes on both sides of the support plate form a lateral insertion fit, enhancing the connection rigidity between the clamping block and the support plate. Under the milling vibration environment generated by the milling cutter continuously milling along the rudder blade's contour trajectory, this anti-deviation component effectively maintains the positional accuracy of the support plate, preventing the support plate from shifting or the clamping block from flipping outwards. This ensures the positional stability of the rudder blade during milling, guaranteeing the accuracy of the milling contour. It solves the problems in existing devices where the support plate easily shifts after long-term use, and the clamping block easily flips outwards during clamping, leading to the loss of the milling positioning reference.

[0020] 3. This invention, by setting up a protective guiding component, rotatably installs a contact strip on the side of the clamping block. When the rudder piece is placed, the contact strip can swing outward around the rotating rod, and its rounded tip generates a flexible lateral guiding force on the edge of the rudder piece, allowing the rudder piece to automatically be guided into the correct clamping position in the center area of ​​the tray. This avoids rigid collision between the edge of the rudder piece and the clamping block, which would cause damage to the surface of the rudder piece and prevent surface defects from affecting the quality of subsequent milling. At the same time, the cooperation between the sliding rod and the fan-shaped groove limits the rotation range of the contact strip, ensuring the reliability of its guiding function. This solves the problems in existing clamping devices where the rudder piece is easily scratched by collision with the clamping block during placement, and the rudder piece is difficult to accurately guide into the milling station. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the tooling for milling the rudder surface according to the present invention;

[0022] Figure 2 This is a schematic diagram of the milling clamping module structure of the present invention;

[0023] Figure 3 This is a top view of the milling station layout of the present invention;

[0024] Figure 4 This is one of the schematic diagrams of the anti-deviation component structure of the present invention;

[0025] Figure 5 This is a second schematic diagram of the anti-deviation component structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the protective guide component structure of the present invention.

[0027] 1. Base; 2. Milling station clamping seat; 3. Positioning pin; 4. Support plate; 5. Clamping block; 6. Lateral positioning hydraulic cylinder; 7. Bidirectional positioning module; 71. Center clamping hydraulic cylinder; 72. Movable column; 73. Double-headed pressure arm; 74. Guide cylinder; 75. Side clamping hydraulic cylinder; 76. Bracket; 77. Single-headed pressure arm; 78. Movable rod; 8. Anti-deviation component; 81. Mounting slot; 82. Support block; 83. Connecting block; 84. T-slot; 85. T-block; 86. Insert post; 87. Insertion hole; 9. Protection guide component; 91. Rotating rod; 92. Contact strip; 93. Slide rod; 94. Sector groove. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] See attached document Figures 1-6 The present invention provides a milling device for clamping multiple rudder blades, including a base 1, a plurality of milling station clamping seats 2 distributed along the length direction on the upper surface of the base 1, a positioning pin 3 fixedly installed on one side of the milling station clamping seat 2, two sets of support plates 4 fixedly installed on the upper surface of the milling station clamping seat 2, four sets of clamping blocks 5 provided on the upper surface of the milling station clamping seat 2, a lateral positioning hydraulic cylinder 6 provided on the side of the milling station clamping seat 2 away from the positioning pin 3, and a bidirectional positioning module 7 provided on the upper surface of the base 1 for integral positioning of the rudder blades to be processed placed on the support plates 4.

[0030] The bidirectional positioning module 7 includes a central clamping hydraulic cylinder 71 disposed between two adjacent sets of milling station clamping seats 2. The piston rod end of the central clamping hydraulic cylinder 71 is fixedly connected to a movable column 72. The top of the movable column 72 is rotatably connected to a double-headed pressure arm 73. The bottom of the central clamping hydraulic cylinder 71 is fixedly installed with a guide cylinder 74, which slides with the piston rod of the central clamping hydraulic cylinder 71. The upper surface of the base 1 is fixedly installed with a side clamping hydraulic cylinder 75. The top of the piston rod of the side clamping hydraulic cylinder 75 is fixedly connected to a movable rod 78. The upper surface of the side clamping hydraulic cylinder 75 is fixedly installed with a bracket 76. The top inner wall of the bracket 76 is rotatably installed with a single-headed pressure arm 77, and the end of the single-headed pressure arm 77 is hinged to the top of the movable rod 78.

[0031] Multiple sets of milling station clamping seats 2 distributed along the length direction on the upper surface of the base 1 are used to simultaneously support multiple rudder blades to be processed, realizing parallel clamping of multiple pieces and improving processing efficiency. The positioning pin 3 is fixedly installed on one side of the milling station clamping seat 2 as a reference positioning element when the rudder blade is placed, ensuring that the initial position of each rudder blade is consistent in the length direction. Two sets of support plates 4 are fixed on the upper surface of the milling station clamping seat 2 to directly support the lower surface of the rudder blade, forming a stable support plane. Four sets of clamping blocks 5 are distributed on the upper surface of the milling station clamping seat 2 to clamp and limit the rudder blade from the side, preventing the rudder blade from shifting in the horizontal plane. The lateral positioning hydraulic cylinder 6 is set on the side of the milling station clamping seat 2 away from the positioning pin 3. When its piston rod extends, it can push the rudder blade from the side, so that the rudder blade is close to the positioning pin 3, thereby completing the precise positioning of the rudder blade in the width direction.

[0032] Furthermore, the bidirectional positioning module 7 is disposed on the upper surface of the base 1, which can simultaneously clamp and fix all the rudder plates placed on multiple sets of milling station clamping seats 2, realizing overall integrated positioning. The central clamping hydraulic cylinder 71 is located between two adjacent sets of milling station clamping seats 2. When its piston rod extends upward, it drives the movable column 72 to descend. During the descent, the double-headed pressure arm 73 at the top of the movable column 72 presses down on both sides at the same time, respectively clamping the middle part of the rudder plates on the two adjacent sets of milling station clamping seats 2, realizing bidirectional synchronous clamping. The guide cylinder 74 is fixed to the bottom of the central clamping hydraulic cylinder 71 and slides with the piston rod to ensure the linearity and stability of the piston rod's lifting and lowering movement and prevent skewing. The side clamping hydraulic cylinder 75 is fixed to the upper surface of the base 1. When its piston rod extends upward, it drives the movable rod 78 to rise. The movable rod 78 pushes the single-head pressure arm 77 to rotate around the hinge point on the inner wall of the top of the bracket 76, causing the pressure head end of the single-head pressure arm 77 to swing downward, thereby pressing the rudder plate on the end milling station clamping seat 2 and completing the positioning and pressing of the edge position.

[0033] The center clamping hydraulic cylinder 71 is located at the center of the two adjacent sets of milling station clamping seats 2, and the two ends of the double-headed pressure arm 73 are respectively located at the center of the two sets of support plates 4 on the two sides of the milling station clamping seats 2.

[0034] The center clamping hydraulic cylinder 71 is located at the center of the two adjacent sets of milling station clamping seats 2, so that the clamping force output by it can be evenly transmitted to the left and right sides of the milling station clamping seats 2, ensuring that the clamping force on the rudder blades on both sides is symmetrical and consistent in magnitude. The two ends of the double-headed pressure arm 73 are respectively located at the center of the two sets of support plates 4 on the two sides of the milling station clamping seats 2, ensuring that when the double-headed pressure arm 73 presses down, the pressure points at both ends fall exactly on the geometric center area of ​​the rudder blades carried by each set of support plates 4, so that the rudder blades bear a uniform downward clamping force, avoiding the rudder blades from tilting or locally lifting due to force eccentricity, and improving positioning reliability and processing stability.

[0035] The piston rod ends of the positioning pin 3 and the lateral positioning hydraulic cylinder 6 are both located at the center of the length direction of the support plate 4, and the upper surfaces of the two sets of support plates 4 on the opposite sides are provided with limit ears.

[0036] The piston rod ends of the positioning pin 3 and the lateral positioning hydraulic cylinder 6 are both located at the center of the length direction of the support plate 4. This ensures that when the lateral positioning hydraulic cylinder 6 pushes the rudder, the line of action of the thrust passes through the midpoint of the length direction of the rudder, ensuring that the rudder is subjected to balanced force when it moves along the width direction and will not generate a deflection torque. This ensures the fitting accuracy between the two sides of the rudder and the clamping block 5. The upper surfaces of the two sets of support plates 4 that are far apart from each other are provided with limit ears. These limit ears serve as end blocks when the rudder is placed, and can provide auxiliary limit in the length direction of the rudder to prevent the rudder from moving along the length direction due to accidental collision during clamping. At the same time, it is convenient for the operator to quickly determine the placement position of the rudder.

[0037] Four sets of clamping blocks 5 are arranged in pairs on both sides of the tray 4, and the clamping blocks 5 are set in the shape of right-angled trapezoids with their bottom edges facing the tray 4. Each pair of clamping blocks 5 corresponds to one set of tray 4.

[0038] Four sets of clamping blocks 5 are arranged in pairs on both sides of the support plate 4. Each pair of clamping blocks 5 clamps the rudder blade from the left and right sides of the support plate 4, forming a centering clamping effect and constraining the lateral displacement of the rudder blade in the horizontal plane. Each pair of clamping blocks 5 is set in correspondence with a set of support plates 4, that is, each set of support plates 4 is equipped with a pair of clamping blocks 5, ensuring that each rudder blade placement station has an independent lateral clamping structure, improving the stability during the clamping process.

[0039] There are two sets of side clamping hydraulic cylinders 75. The two sets of side clamping hydraulic cylinders 75 are respectively located on the outside of the milling station clamping seat 2 at the end, and the single-head pressure arm 77 faces the side of the milling station clamping seat 2 at the end.

[0040] Two sets of side clamping hydraulic cylinders 75 are provided, respectively located on the outer side of the milling station clamping base 2 at both ends. Together with the center clamping hydraulic cylinder 71, they cover the clamping requirements of all the rudder blades placed on the milling station clamping base 2, achieving full coverage clamping of all rudder blades from the middle to the edge. The single-head pressure arm 77 faces the side of the milling station clamping base 2 at the end. When its pressure head swings downward under the drive of the side clamping hydraulic cylinder 75, it can accurately press on the edge area of ​​the rudder blade on the end milling station clamping base 2, applying a vertical downward clamping force to prevent the end rudder blade from vibrating or displacing during processing due to the lack of outer clamping points, ensuring that all rudder blades on the entire clamping line are subjected to the same force.

[0041] It is worth noting that the lateral positioning hydraulic cylinder 6 shares the same oil supply circuit with the center clamping hydraulic cylinder 71 and the side clamping hydraulic cylinder 75, thereby enabling them to start, stop and control together, ensuring consistent positioning during the clamping process.

[0042] Please see Figures 4-6 The milling station clamping base 2 is provided with an anti-deviation component 8 to support the position of the pallet 4. The anti-deviation component 8 includes an installation groove 81 opened inside the milling station clamping base 2. A support block 82 and a connecting block 83 are detachably installed inside the installation groove 81. A T-shaped groove 84 is opened on the upper surface of the support block 82. A T-shaped block 85 that matches the size of the T-shaped groove 84 is fixedly installed at the bottom of the clamping block 5. A pin 86 is fixedly installed on the side surface of the clamping block 5 near the pallet 4. Insertion holes 87 that match the size of the pin 86 are opened on the inner walls of both sides of the pallet 4.

[0043] The mounting slot 81 is located inside the milling station clamping base 2, providing space for the support block 82 and the connecting block 83 to be accommodated and installed. The support block 82 is detachably installed in the mounting slot 81, and its upper part is connected to the T-shaped block 85 at the bottom of the clamping block 5 through the T-shaped slot 84 to form a sliding fit. The T-shaped structure can limit the clamping block 5 from disengaging in the vertical direction, while allowing the clamping block 5 to be finely adjusted in position along the direction of the T-shaped slot 84, which is convenient to adapt to the clamping requirements of different sized rudder plates. The clamping block 5 has a pin 86 fixedly installed on the surface near the support plate 4. The inner walls on both sides of the support plate 4 have insertion holes 87. When the clamping block 5 moves towards the support plate 4, the pin 86 is inserted into the insertion hole 87 to form a lateral insertion fit, which enhances the connection rigidity between the clamping block 5 and the support plate 4, prevents the clamping block 5 from flipping or shifting due to force during clamping, and improves the ability of the support plate 4 to withstand vertical pressure.

[0044] Both sides of the support block 82 and the connecting block 83 are provided with protrusions, and the two sides of the mounting groove 81 are provided with recessed cavities that are adapted to the size of the protrusions. The surface of the support block 82 near the connecting block 83 is inclined, and the end of the connecting block 83 is complementary to the side shape of the support block 82.

[0045] Both sides of the support block 82 and the connecting block 83 are provided with protrusions. The sides of the mounting groove 81 are provided with recessed cavities that are adapted to the size of the protrusions. The protrusions are embedded in the recessed cavities to form a longitudinal anti-disengagement and limiting structure, which prevents the support block 82 and the connecting block 83 from coming out of the mounting groove 81 in the vertical or horizontal direction, thereby enhancing the overall installation reliability. The surface of the support block 82 near the connecting block 83 is set in an inclined shape. The end of the connecting block 83 and the side of the support block 82 are complementary in shape. The two fit together through the inclined surfaces. When the connecting block 83 is locked downward by bolts, its inclined end face will generate a downward squeezing component and a lateral pushing component on the support block 82, thereby pressing the support block 82 more firmly against the bottom of the mounting groove 81. At the same time, it pushes the support block 82 to move slightly in the direction of the support plate 4, eliminating the gap between the support block 82 and the mounting groove 81, and further improving the positioning accuracy and vibration resistance of the support block 82.

[0046] The upper surface of the support block 82 is flush with the upper surface of the milling station clamping seat 2. Therefore, the top of the T-slot 84 does not exceed the upper surface of the milling station clamping seat 2 but is located in the mounting groove 81, thereby protecting the T-block 85 from detachment. The upper surface of the connecting block 83 is abutted against the upper surface of the support plate 4 by bolts.

[0047] The upper surface of the support block 82 is flush with the upper surface of the milling station clamping seat 2, ensuring that when the rudder plate is placed on the support plate 4, the support block 82 will not cause local protrusion interference to the lower surface of the rudder plate, ensuring that the bottom surface of the rudder plate is fully in contact with the upper surface of the support plate 4. The top of the T-slot 84 does not exceed the upper surface of the milling station clamping seat 2 but is located in the mounting groove 81, so that when the T-block 85 is in the T-slot 84, its top is blocked and limited by the side wall of the mounting groove 81, thus playing a role in preventing detachment. Even if the clamping block 5 is subjected to upward force, Even under external impact, the T-block 85 will not come out of the T-slot 84, improving clamping safety and reliability. The upper surface of the connecting block 83 is abutted against the upper surface of the support plate 4 by bolts. When the bolts are tightened, the connecting block 83 generates a downward tension force on the support plate 4, making the support plate 4 fit more tightly against the upper surface of the milling station clamping seat 2. At the same time, the connecting block 83 generates a lateral extrusion force on the support block 82, further locking the position of the support block 82, so that the entire anti-deviation assembly 8 forms a self-locking structure, which is not easy to loosen after long-term use.

[0048] Please see Figures 5-6 The clamping block 5 is provided with a protective guide assembly 9 on the side surface near the support plate 4 to facilitate the placement of the rudder blade and prevent deviation. The protective guide assembly 9 includes a rotating rod 91 that is rotatably installed on the inner wall of the side of the clamping block 5. A contact strip 92 is fixedly connected to the end of the rotating rod 91. A sliding rod 93 is fixedly installed on the bottom side wall of the contact strip 92. A fan-shaped groove 94 that cooperates with the sliding rod 93 is opened on the side wall of the clamping block 5.

[0049] The rotating rod 91 is rotatably mounted on the inner side wall of the clamping block 5. The contact strip 92, which is fixedly connected to its end, provides a direct contact interface for the rudder blade. The contact strip 92 can rotate freely with the rotating rod 91, thereby adaptively conforming to the angle of the side edge of the rudder blade. A sliding rod 93 is fixedly mounted on the bottom side wall of the contact strip 92. A fan-shaped groove 94 that cooperates with the sliding rod 93 is opened on the side wall of the clamping block 5. The sliding rod 93 slides in the fan-shaped groove 94, limiting the rotation range of the contact strip 92 and preventing the contact strip 92 from over-rotating and losing its guiding function. When the rudder blade is placed from above and downward, the edge of the rudder blade first contacts the guiding surface of the contact strip 92, pushing the contact strip 92 to swing outward around the rotating rod 91. The sliding rod 93 slides along the fan-shaped groove 94. During this process, the contact strip 92 generates a flexible lateral thrust on the rudder blade, guiding the rudder blade to automatically slide to the correct position in the center area of ​​the support plate 4, while absorbing the impact energy when the rudder blade is placed, avoiding scratches on the edge of the rudder blade or damage to the clamping block 5.

[0050] The contact strip 92 has rounded corners at its top and edges, which effectively disperses contact stress when the rudder plate comes into contact with the contact strip 92 during placement, preventing indentations or scratches on the rudder plate surface. The rounded corners also provide a smooth guide surface during the initial contact of the rudder plate, further reducing insertion resistance and making placement smoother. In addition, the rounded edges reduce wear and deformation of the contact strip 92 itself due to impacts during use, extending the service life of the protective guide assembly 9, and preventing operators from being scratched by sharp edges when installing or removing the rudder plate, thus improving operational safety.

[0051] In use, the operator places multiple rudder pieces to be processed on the two sets of trays 4 of the milling station clamping seat 2. One end of the rudder piece abuts against the limiting ears on the opposite side of the tray 4 to achieve initial positioning in the length direction. During the placement of the rudder piece, the contact strip 92 of the protective guide component 9 first contacts the side edge of the rudder piece. When the rudder piece is lowered, it pushes the contact strip 92 to swing outward around the rotating rod 91. The sliding rod 93 slides along the fan-shaped groove 94. The rounded corner tip of the contact strip 92 generates a flexible lateral guiding force on the rudder piece, automatically guiding the rudder piece into the correct clamping position in the center area of ​​the tray 4, avoiding rigid collision between the edge of the rudder piece and the clamping block 5.

[0052] Subsequently, the lateral positioning hydraulic cylinder 6 is activated, its piston rod extends and pushes the side edge of the rudder blade, causing the rudder blade as a whole to translate towards the positioning pin 3 until the other edge of the rudder blade is close to the positioning pin 3, completing the precise positioning in the width direction. At the same time, the center clamping hydraulic cylinder 71 is activated and drives its piston rod to retract, causing the movable column 72 and the double-headed pressure arm 73 to move downward. The two ends of the double-headed pressure arm 73 simultaneously press down on the middle part of the rudder blade on the two milling station clamping seats 2. At the same time, the piston rod of the side clamping hydraulic cylinder 75 extends and pushes the movable rod 78 to rise. The movable rod 78 drives the single-headed pressure arm 77 to rotate around the bracket 76, causing the pressure head end of the single-headed pressure arm 77 to swing downward and press the edge of the rudder blade on the end milling station clamping seat 2. Thus, all rudder blades are synchronously pressed and fixed, forming a stable milling machining reference.

[0053] When the machining center spindle drives the milling cutter to continuously mill along the aerodynamic contour trajectory of the rudder blade, the bidirectional positioning module 7 ensures that each rudder blade does not displace or vibrate under the action of milling force, so that multiple rudder blades have uniform contour surface accuracy after milling in one clamping.

[0054] After processing, the center clamping hydraulic cylinder 71 and the side clamping hydraulic cylinder 75 move in opposite directions, the double-headed pressure arm 73 and the single-headed pressure arm 77 are raised synchronously, the piston rod of the lateral positioning hydraulic cylinder 6 retracts, and the processed rudder piece can be taken out and the next clamping cycle can begin.

Claims

1. A milling device for rudder surfaces capable of clamping multiple rudder blades, characterized in that, The base (1) is used for synchronous milling of multiple rudder blades. The upper surface of the base (1) has multiple sets of milling station clamping seats (2) distributed along the length direction. A positioning pin (3) is fixedly installed on one side of the milling station clamping seat (2). Two sets of support plates (4) are fixedly installed on the upper surface of the milling station clamping seat (2). Four sets of clamping blocks (5) are provided on the upper surface of the milling station clamping seat (2). A lateral positioning hydraulic cylinder (6) is provided on the side of the milling station clamping seat (2) away from the positioning pin (3). A bidirectional positioning module (7) is provided on the upper surface of the base (1) to perform integrated positioning of the rudder blades to be processed placed on the support plates (4) to ensure the consistency of the milling contour of multiple rudder blades. The bidirectional positioning module (7) includes a central clamping hydraulic cylinder (71) disposed between two adjacent sets of milling station clamping seats (2). The piston rod end of the central clamping hydraulic cylinder (71) is fixedly connected to a movable column (72). The top end of the movable column (72) is rotatably connected to a double-headed pressure arm (73). The bottom of the central clamping hydraulic cylinder (71) is fixedly installed with a guide cylinder (74). The guide cylinder (74) slides with the piston rod of the central clamping hydraulic cylinder (71). The upper surface of the base (1) is fixedly installed with a side clamping hydraulic cylinder (75). The top end of the piston rod of the side clamping hydraulic cylinder (75) is fixedly connected to a movable rod (78). The upper surface of the side clamping hydraulic cylinder (75) is fixedly installed with a bracket (76). The top inner wall of the bracket (76) is rotatably installed with a single-headed pressure arm (77). The end of the single-headed pressure arm (77) is hinged to the top end of the movable rod (78).

2. The milling device for mounting multiple rudder blades according to claim 1, characterized in that, The central clamping hydraulic cylinder (71) is located at the center of the two adjacent sets of milling station clamping seats (2), and the two ends of the double-headed pressure arm (73) are respectively located at the center of the two sets of pallets (4) on the two sides of the milling station clamping seats (2).

3. The milling device for mounting multiple rudder blades according to claim 2, characterized in that, The positioning pin (3) and the piston rod end of the lateral positioning hydraulic cylinder (6) are both located at the center of the length direction of the support plate (4), and the upper surface of the two sets of support plates (4) on the side away from each other is provided with a limiting ear.

4. The milling device for clamping multiple rudder blades according to claim 3, characterized in that, The four sets of clamping blocks (5) are arranged in pairs on both sides of the tray (4), and the clamping blocks (5) are arranged in the shape of right-angled trapezoids with their bottom edges facing the tray (4). Each pair of clamping blocks (5) corresponds to a set of trays (4).

5. The milling device for clamping multiple rudder blades according to claim 4, characterized in that, The number of the side clamping hydraulic cylinders (75) is set in two sets. The two sets of side clamping hydraulic cylinders (75) are respectively set on the outside of the milling station clamping seat (2) at the end, and the single-head pressure arm (77) faces the side of the milling station clamping seat (2) at the end.

6. The milling device for mounting multiple rudder blades according to claim 5, characterized in that, The milling station clamping base (2) is provided with an anti-deviation component (8) to support the position of the pallet (4). The anti-deviation component (8) includes an installation groove (81) opened inside the milling station clamping base (2). A support block (82) and a connecting block (83) are detachably installed inside the installation groove (81). A T-shaped groove (84) is opened on the upper surface of the support block (82). A T-shaped block (85) that matches the size of the T-shaped groove (84) is fixedly installed at the bottom of the clamping block (5). A pin (86) is fixedly installed on the side of the clamping block (5) near the pallet (4). Insertion holes (87) that match the size of the pin (86) are opened on the inner walls of both sides of the pallet (4).

7. The milling device for mounting multiple rudder blades according to claim 6, characterized in that, Both sides of the support block (82) and the connecting block (83) are provided with protrusions, and the two sides of the mounting groove (81) are provided with recessed cavities that are adapted to the size of the protrusions. The surface of the support block (82) near the connecting block (83) is inclined, and the end of the connecting block (83) and the side of the support block (82) are complementary in shape.

8. The milling device for clamping multiple rudder blades according to claim 7, characterized in that, The upper surface of the support block (82) is flush with the upper surface of the milling station clamping seat (2), and the upper surface of the connecting block (83) is abutted against the upper surface of the support plate (4) by bolts.

9. The milling device for clamping multiple rudder blades according to claim 8, characterized in that, The clamping block (5) is provided with a protective guide assembly (9) on the side surface near the support plate (4) to facilitate the placement of the rudder blade and prevent deviation. The protective guide assembly (9) includes a rotating rod (91) rotatably installed on the inner wall of the side of the clamping block (5). A contact strip (92) is fixedly connected to the end of the rotating rod (91). A sliding rod (93) is fixedly installed on the bottom side wall of the contact strip (92). A fan-shaped groove (94) that cooperates with the sliding rod (93) is opened on the side wall of the clamping block (5).

10. The milling device for clamping multiple rudder blades according to claim 9, characterized in that, The top and edges of the contact strip (92) are rounded.

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