Large rudder post machining equipment

Abstract

The application relates to the field of rudder bar bending processing, in particular to a large rudder bar processing equipment which comprises a bed body, a workpiece fixing device and a rotary ring-shaped tool holder. The bed body comprises first guide rails and second guide rails arranged in parallel. The workpiece fixing device is used for fixing a rudder bar workpiece to be processed and sequentially comprises a tailstock connected to the first guide rails and the second guide rails in a sliding mode, a first center frame group connected to the first guide rails in a sliding mode, the first center frame group comprising two first bend radius center frames, and a chuck fixed to the bed body and having a disc surface parallel to the length direction of the first guide rails. The rotary ring-shaped tool holder is arranged on the second guide rails and located between the two first bend radius center frames, the rotary ring-shaped tool holder can move along the length direction of the second guide rails, the ring-shaped middle part of the rotary ring-shaped tool holder penetrates the rudder bar workpiece, and turning tools are installed in the ring of the rotary ring-shaped tool holder. The application has the effects of being capable of stably and highly accurately processing the rudder bar and reducing the volume of the processing equipment.

Description

Technical Field

[0001] This application relates to the field of curved rudder stock processing technology, and in particular to a large curved rudder stock processing equipment. Background Technology

[0002] The curved rudder stock is a critical component on a ship, used to control the steering of the rudder and the operation of the steering gear. It is a rod-like component connecting the steering gear and the rudder, typically cylindrical or with a flat rectangular cross-section. It transmits the forces and torques generated by the steering gear, causing the rudder to rotate within its operating range, thus achieving ship maneuvering and steering. It is generally forged from high-strength steel or other alloy materials. The manufacturing process includes forging, heat treatment, and machining, with turning, milling, and grinding used to achieve the required geometric dimensions and surface finish. The curved rudder stock has a unique shape, often employing an asymmetrical structure. One end is a curved section with a square flange, while the other end is a cylindrical section. The shape transitions naturally from square flange to cylinder. Due to its poor rigidity, relatively long overall length, and large slenderness ratio, it belongs to the category of slender shaft workpieces, requiring special fixing devices during machining to ensure its quality.

[0003] Large curved rudder sticks are typically machined on horizontal lathes. The curved end of the rudder stick is eccentrically held in a chuck, and one end of the cylindrical shaft is supported by a tailstock center, thus fixing the workpiece. The workpiece rotates to contact the cutting tool for machining. During lathe machining, the part rotates around the axis of the cylindrical shaft. The radius of rotation at the curved end is large; for large curved rudder sticks, the diameter of rotation is very large. Therefore, the required lathe diameter must exceed the diameter of rotation of the workpiece, necessitating a very large lathe for machining large curved rudder sticks.

[0004] Because the workpiece is placed eccentrically at the chuck end, the center of gravity and the center of rotation of the workpiece are not on the same axis. This misalignment will affect the machining accuracy. In order to adjust the position of the center of gravity, a counterweight needs to be installed on the chuck at a position opposite to the clamping position of the bent rudder stick, which leads to an increase in the overall load of the machine tool.

[0005] Therefore, there is an urgent need to provide a new solution that can process curved rudder posts with stable and high precision while reducing the size of the processing equipment. Summary of the Invention

[0006] To address the problems in the background art, and to achieve stable and high-precision machining of curved rudder posts while reducing the size of the machining equipment, this application provides a large curved rudder post machining equipment.

[0007] This application provides a large-scale curved rudder stock processing equipment, which adopts the following technical solution:

[0008] A large-scale bending rudder post processing equipment, comprising:

[0009] The bed includes a first guide rail and a second guide rail arranged in parallel.

[0010] A workpiece fixing device for fixing a curved rudder stick workpiece to be processed, comprising:

[0011] The center tailstock is slidably connected to the first guide rail and the second guide rail, and the center tailstock presses against one end of the cylindrical section of the bent rudder rod workpiece.

[0012] A chuck is fixed to the bed and its surface is parallel to the length direction of the first guide rail. The chuck clamps one square end of the bent rudder rod workpiece.

[0013] The first center frame assembly is slidably connected to the first guide rail and located between the center tailstock and the chuck. The first center frame assembly includes two first bend-diameter center frames, which are used to clamp the two ends of the cylindrical section to be processed of the bent rudder rod workpiece respectively.

[0014] A rotary ring tool holder is mounted on the second guide rail and located between two first bend center supports. The rotary ring tool holder can move along the length of the second guide rail. The ring center of the rotary ring tool holder passes through the bent rudder workpiece, and a turning tool is installed inside the ring of the rotary ring tool holder.

[0015] By adopting the above technical solution, the workpiece is rigidly fixed by the center tailstock, chuck, and first center support assembly, eliminating the need for high-speed rotation of the workpiece as a whole during machining. The center tailstock and chuck respectively position the cylindrical and square ends of the curved rudder stock, forming a fixed foundation at both ends; the two first-curved-diameter center supports further clamp the two ends of the cylindrical section to be machined, constructing a multi-support system with positioning at both ends and dual-point support in the middle. This structure effectively suppresses deflection deformation and vibration during machining, providing a stable workpiece posture for high-precision machining, addressing the characteristics of the curved rudder stock's poor rigidity and large slenderness ratio. Furthermore, the use of two first-curved-diameter center supports, mounted on two guide rails respectively with the rotary ring tool holder, allows for close installation without machining interference, ensuring more stable support of the workpiece to be machined. With the workpiece fixed, there is no need to balance the centrifugal force of rotation with counterweights, avoiding increased overall machine tool load and vibration, thus reducing not only the equipment's operating load but also machining errors caused by dynamic imbalance. The rotary ring tool holder is positioned around the workpiece, and its rotation drives the tool within the ring to complete the cutting. It can also move along the second guide rail for feeding. This eliminates the need to reserve space for the large turning radius of the curved end of the rudder post; only the workpiece length and the tool holder's movement range need to be matched. This significantly reduces the requirements for the overall rotation diameter of the equipment, drastically reducing its size and footprint. Furthermore, the rotary ring tool holder is located between the two first-curve center supports, placing the tool cutting point within the range of the double support points. This allows the cutting force to be directly borne by the support structure, reducing elastic deformation of the workpiece caused by stress. Simultaneously, the smooth movement of the tool holder along the second guide rail and the coordinated circular rotation ensure consistent contact trajectories between the tool and the workpiece, improving the geometric accuracy and surface roughness of the machined surface.

[0016] Preferably, the workpiece fixing device further includes a second center frame assembly, which includes two second bend-diameter center frames. The two second bend-diameter center frames are slidably connected to the second guide rail and located between the first center frame assembly and the chuck. The two second bend-diameter center frames are used to clamp the cylindrical section of the bent rudder rod workpiece.

[0017] By adopting the above technical solution, the curved rudder stock has a relatively long overall length and a large slenderness ratio. During the machining process, even with the support of the section to be machined by the first center frame assembly, the cylindrical section near the chuck may still experience elastic deformation due to its large span. The second center frame assembly is slidably connected to the second guide rail and located between the first center frame assembly and the chuck. The two second-curved-diameter center frames specifically clamp the cylindrical section of the curved rudder stock, forming a full-stroke multi-point support system consisting of chuck positioning, mid-section support of the second center frame assembly, support of the machining section of the first center frame assembly, and end positioning of the center tailstock. This shortens the overall support spacing of the curved rudder stock and effectively suppresses the deflection deformation of the long cantilever section by dispersing the bending moment generated by the workpiece's self-weight and cutting force. In particular, it forms a rigid constraint on the transition section of the curved rudder stock from the square flange to the cylindrical shape, avoiding local vibration caused by structural abrupt changes.

[0018] Preferably, both the first and second bend center frames include a lower support plate, a support frame, and a pressure plate;

[0019] The lower support plate is slidably connected to the first guide rail or the second guide rail;

[0020] The support frame is slidably connected to the lower support plate, and the support frame can move on the lower support plate along the length direction perpendicular to the first guide rail. The upper end of the support frame has an upward-opening arc-shaped support groove.

[0021] The pressure plate is in the shape of an inverted V. The two ends of the V-shape of the pressure plate are respectively hinged to the two ends of the arc shape of the support groove by bolts. The inner side of the pressure plate clamps the cylindrical circumference of the bent rudder rod workpiece with the end of the support column.

[0022] By adopting the above technical solution, both the first and second bend-path center frames employ a combination structure of a lower support plate, a support frame, and an inverted V-shaped pressure plate. The support frame is tilted to one side. The first and second bend-path center frames are mounted on the first and second guide rails respectively, facing opposite directions, thus coaxially supporting and fixing the cylindrical section of the curved rudder rod workpiece to be processed. The support groove fits against the lower side of the cylindrical section through its arc-shaped surface, providing stable bottom support. The two ends of the inverted V-shaped pressure plate are hinged to the two ends of the support groove by bolts. The fitting force between the pressure plate and the cylindrical section can be adjusted by the bolts, ensuring that the inner wall tightly wraps around the circumference of the cylindrical section. This adapts to local dimensional fluctuations in the cylindrical section, avoiding local deformation or positioning offset of the workpiece caused by traditional rigid clamping, and ensuring minimal coaxiality deviation between the clamping point and the workpiece axis. The lower support plate is slidably connected to the first or second guide rail, allowing flexible adjustment of the center frame's support position along the length of the guide rail in the axial direction of the workpiece. This adapts to the support requirements of curved rudder rods of different lengths, solving the problem of workpiece specifications being limited by fixed support positions. The support frame slides on the pallet along a direction perpendicular to the length of the guide rail, allowing for precise adjustment of the support point's radial position on the workpiece. This ensures that the arc center of the support groove coincides with the center of the workpiece, eliminating machining deviations caused by support eccentricity. The bolted inverted V-shaped pressure plate allows for fine adjustment of the clamping force via threads, ensuring sufficient clamping rigidity to resist cutting forces while avoiding surface damage or internal stress accumulation on the workpiece caused by interference clamping.

[0023] Preferably, a support column is provided in the support groove, and the support column can extend and retract radially along the arc.

[0024] By adopting the above technical solution, a retractable and movable support column is set in the support groove. The support column can be moved and adjusted through the internal threaded screw structure in the support frame. The retractable function of the support column, together with the inverted V-shaped pressure plate for clamping adjustment, allows for fine adjustment of the height and horizontal position of the bent rudder rod workpiece, achieving high-precision clamping.

[0025] Preferably, the workpiece fixing device further includes a bracket that is slidably connected to the first guide rail. The bracket is located between the first center frame assembly and the chuck, and is used to support the curved section and trapezoidal end of the bent rudder rod workpiece.

[0026] By adopting the above technical solution, a bracket is added to the workpiece fixing device, slidingly connected to the first guide rail and located between the first center frame assembly and the chuck. This bracket is specifically used to support the curved section and trapezoidal end of the bent rudder stock. The curved section of the rudder stock is a stress concentration area, and its asymmetrical shape causes a shift in the center of gravity, making it prone to sagging deformation under its own weight during processing. The trapezoidal end, as a transition structure connecting the square flange and the curved section, also suffers from weak rigidity. The support surface of the bracket can be designed to fit the curvature of the curved section and the shape of the trapezoidal end, directly contacting these two weak points to generate an upward supporting force, offsetting the bending moment generated by the workpiece's own weight. Because the bracket is slidably connected to the first guide rail, its axial position can be adjusted according to changes in the specifications of the bent rudder stock, ensuring that the support point is always in the stress concentration area that requires the most support, avoiding ineffective support caused by a mismatch between the fixed support position and the workpiece shape.

[0027] Preferably, the tip tailstock includes a base, a tip seat, and a tip;

[0028] The base is slidably connected to the first guide rail and the second guide rail;

[0029] The top seat is slidably connected to the base, and the top seat can move on the base along the length direction perpendicular to the first guide rail;

[0030] The tip is fixed to the tip holder on the side facing the chuck.

[0031] By adopting the above technical solution, the center tailstock uses a combination structure of a base, a sliding center seat, and a center. Through dual sliding adjustment, it achieves precise positioning and rigid support for the cylindrical end of the curved rudder stock. The base is slidably connected to the first and second guide rails, and can move flexibly along the length of the guide rails. The distance between the center and the chuck is adjusted according to the total length of the curved rudder stock, ensuring that the center accurately presses against the center hole at the end of the cylindrical section, adapting to the clamping requirements of workpieces of different lengths. The center seat slides on the base along a direction perpendicular to the length of the guide rails, precisely compensating for radial offset caused by bending or clamping of the curved rudder stock, ensuring that the axis of the center is completely aligned with the center of the cylindrical section, avoiding additional torque and machining errors caused by positioning eccentricity.

[0032] Preferably, the center seat is vertically shaped like an inverted L, the end of the horizontal arm of the center seat faces the chuck side, and the center is fixed to the end of the horizontal arm of the center seat.

[0033] By adopting the above technical solution, the center seat adopts a vertically inverted L-shaped structural design, with the end of the horizontal arm facing the chuck and fixing the center. There is a spatial angle difference between the curved section and the cylindrical section of the bent rudder rod. The longitudinal dimension of the traditional inline center seat is large, which easily causes spatial interference with the curved section or trapezoidal end, resulting in clamping difficulties or the need for additional adjustment of the workpiece posture. The inverted L-shaped structure achieves spatial avoidance through the vertical arrangement of the vertical and horizontal arms.

[0034] Preferably, the chuck includes a chuck body, horizontal jaws, and vertical jaws;

[0035] The central axis of the disc body coincides with the central axis of the cylindrical section of the bent rudder stick workpiece. A horizontal guide groove and a vertical guide groove are provided on the side of the disc body facing the center tailstock. The horizontal guide groove and the vertical guide groove are located on the diameter of the disc body.

[0036] The horizontal claw is slidably engaged in the horizontal guide groove, and the horizontal claw can slide along the length direction of the horizontal guide groove;

[0037] The vertical claw is slidably engaged in the vertical guide groove, and the vertical claw can slide along the length direction of the vertical guide groove;

[0038] During processing, the vertical jaws abut against the two waists of the trapezoidal end of the curved rudder rod workpiece, and the horizontal jaws abut against the top and bottom edges of the trapezoidal end of the curved rudder rod workpiece.

[0039] By adopting the above technical solution, the trapezoidal end of the curved rudder post has inclined waist edges on both sides and parallel top and bottom edges on the top and bottom. The radial clamping method of traditional three-jaw or four-jaw chucks is difficult to fit with the trapezoidal surface, which easily leads to clamping point offset or stress concentration. This solution achieves targeted clamping through the design of horizontal and vertical orthogonal jaws. The horizontal jaws slide along the horizontal guide groove in the diameter direction of the chuck body, which can accurately abut against the top and bottom edges of the trapezoidal end. The planar characteristics of the parallel edges form axial constraints, which limit the vertical movement of the workpiece. The vertical jaws slide along the vertical guide groove perpendicular to the horizontal guide groove. Their clamping surfaces can be adapted to the inclination angle of the trapezoidal waist edges to achieve a tight fit with the two waist edges. The radial force is transmitted through the inclined surface contact, which limits the circumferential rotation and lateral displacement of the workpiece.

[0040] Preferably, a horizontal lead screw is provided in the horizontal guide groove, the horizontal lead screw has two symmetrical threads, the pair of horizontal jaws are threadedly connected to the horizontal lead screw and can rotate in the direction of the disc surface, when the horizontal lead screw rotates, the pair of horizontal jaws slide along the horizontal guide groove, moving closer or further away from each other, and when the pair of horizontal jaws abut against the bent rudder rod workpiece, they rotate to fit against the two waist sides of the trapezoidal end;

[0041] A vertical lead screw is provided in the vertical guide groove. The vertical lead screw has two symmetrical threads. A pair of vertical jaws are threadedly connected to the vertical lead screw. When the vertical lead screw rotates, the pair of vertical jaws slide along the vertical guide groove, moving closer to or further away from each other.

[0042] By adopting the above technical solution, traditional chuck adjustment relies on manual or asymmetrical transmission, which is prone to clamping eccentricity caused by asynchronous chuck movement. This solution utilizes a symmetrical thread design on the lead screw. Both the horizontal and vertical lead screws employ two symmetrical threads with opposite directions. When the lead screw rotates, a pair of chucks move closer or further apart along the guide groove at the same speed. For the horizontal chucks, synchronous adjustment, combined with their rotatable characteristics, allows the two chucks to automatically rotate to a completely flush angle with the trapezoidal side when they are pressed against the top and bottom edges, avoiding localized gaps caused by positional deviations. The threaded connection between the lead screw and the chucks provides stable force transmission characteristics. Combined with the symmetrical layout, this ensures that the clamping force of the pair of chucks on the workpiece is equal in magnitude and opposite in direction, with the center of the resultant force precisely falling on the disc axis, eliminating additional torque. The rotatable design of the horizontal chucks allows them to adaptively adjust their contact posture according to the inclination angle of the trapezoidal side, ensuring that the clamping force acts perpendicularly on the trapezoidal surface, avoiding stress concentration caused by lateral forces and protecting the workpiece surface accuracy. The stable clamping force generated by synchronous adjustment keeps the trapezoidal end in a constant posture during processing, which balances the top support force of the bracket and the supporting force of the center frame, together suppressing the dynamic deformation of the workpiece and providing a stable spatial reference for the cutting of the rotary ring tool holder.

[0043] Preferably, it further includes a commutation device, the commutation device comprising:

[0044] A linkage mechanism is disposed on the bed below the chuck. The linkage mechanism has a rotating shaft in the middle and a sliding groove is opened at each end of the linkage mechanism. A connecting column is provided in the sliding groove and can slide therein. The connecting column is connected to the bracket at the trapezoidal end of the curved section of the corresponding support curved rudder rod. When the linkage mechanism rotates around the rotating shaft, the connecting column slides in the sliding groove and drives the corresponding bracket away from or towards the chuck body.

[0045] There are two levers, which are respectively located at the upper end and the lower end of the disc body. The lever located at the lower end of the disc body moves the linkage mechanism. The disc body is fixed to the bed frame and can rotate around its central axis.

[0046] After the processing is completed and the curved rudder is removed, the disc body rotates 180° to make the two levers rotate accordingly, which actuates the linkage mechanism and causes the bracket near the disc body to move away from the disc body, and the bracket away from the disc body to move closer to the disc body.

[0047] Because the lower jaw of a pair of vertical jaws bears the weight of the trapezoidal end of the bent rudder stick, the wear of the thread between the lower vertical jaw and the corresponding lead screw will be greater than that between the upper vertical jaw and the corresponding lead screw during the machining process. After repeated machining, problems such as clamping offset and insufficient clamping force are likely to occur.

[0048] By adopting the above technical solution, the chuck body can rotate, allowing the direction of the vertical jaws to be changed. After the curved rudder stock workpiece is processed and removed from the chuck, the chuck rotates due to its center being offset to one side and is driven by a motor to rotate 180°. When the chuck rotates, the bracket supporting the trapezoidal end of the curved section of the rudder stock is moved to the other side via a reversing mechanism. This requires changing the position when installing the curved rudder stock workpiece to be processed next. Furthermore, after rotation, the up-down direction of a pair of vertical jaws is switched, so that the vertical jaw that was below in the previous processing is converted to the jaw that is above in the next processing. This solves the problem of excessive wear between the lower vertical jaw and the vertical lead screw, making the thread wear at both ends of the vertical lead screw more even, thereby enabling stable clamping and improving the processing accuracy of the curved rudder stock.

[0049] In summary, this application includes at least one of the following beneficial technical effects:

[0050] 1. A multi-support system is constructed using a tailstock, chuck, and first and second center supports. Positioning at both ends and double-point support in the middle effectively suppresses machining deflection and vibration. Multi-point support throughout the entire stroke shortens the distance between supports, distributing bending moments and preventing deformation and vibration in long cantilever sections and transition sections. The workpiece remains stationary, eliminating the need for counterweights and reducing equipment load and dynamic imbalance errors. The rotary ring tool holder rotates around the workpiece for feed, eliminating the need for a large turning radius and significantly reducing equipment size. Located between the two supports, the cutting force is directly borne by the support structure, reducing workpiece elastic deformation and facilitating smooth tool holder movement, thus improving surface geometric accuracy and roughness. The first center support and the rotary ring tool holder are positioned on two separate guide rails, allowing for close-range installation without interference, providing more stable support for the machining section.

[0051] 2. The rotary ring tool post is located between the two support points of the first center support group, allowing the cutting force to be directly and efficiently borne by the support structure, minimizing the elastic deformation of the workpiece caused by the force. A sliding bracket is added to specifically support the easily sagging curved section and the weakly rigid trapezoidal end, offsetting the self-weight bending moment and preventing deformation in stress concentration areas. The support frame slides radially on the support plate, and the support plate slides axially along the guide rail; this dual adjustment ensures that the center of the support groove is precisely aligned with the workpiece axis, eliminating deviations caused by eccentricity. The inverted V-shaped pressure plate, through bolt hinges and threaded fine-tuning, can adapt to local dimensional fluctuations in the workpiece, tightly wrapping the cylindrical surface to provide uniform and sufficient clamping force to resist cutting forces, while avoiding interference damage or stress concentration. The telescopic support column, in conjunction with the pressure plate adjustment, allows for fine adjustment of the workpiece's height and horizontal position, ensuring high-precision coaxial clamping. Axial and radial positions are adjustable to accommodate curved rudders of different lengths and sizes, overcoming the limitations of fixed supports. The inverted L-shaped top mount structure effectively avoids spatial interference in the curved section of the rudder stock. The dual sliding adjustment of the base and the top mount ensures that the top precisely presses against the center hole at the end, providing rigid, non-eccentric force support.

[0052] 3. Utilizing an orthogonal jaw design, the horizontal jaws grip the top and bottom edges, while the vertical jaws grip the inclined waist edge, combined with a symmetrical, reverse-threaded screw drive. The horizontal jaws can rotate to adapt to the trapezoidal side angle; the vertical jaws' gripping surface adapts to the waist edge angle, achieving surface contact and avoiding point loads and offset. The symmetrical screw ensures that the paired jaws move synchronously and at the same speed, with the resultant clamping force passing through the disc body axis, eliminating additional torque. The rotatable disc design, combined with a locking mechanism, requires rotating the disc after machining to unlock and switch the positions of the upper and lower vertical jaws, ensuring even wear of the threads at both ends of the vertical screw and maintaining long-term stable clamping accuracy.

[0053] 4. The comprehensive technical solutions, including multi-point rigid support layout, workpiece static machining mode, compact rotary ring tool post, high-precision adaptive adjustable center frame, space-optimized end positioning, and dedicated trapezoidal end chuck, effectively overcome core challenges in the machining of slender curved rudder rods, such as deformation, vibration, precision control, and equipment enlargement, achieving advanced machining with high precision, high stability, high efficiency, and compact equipment. Attached Figure Description

[0054] Figure 1 This is a schematic diagram of the structure of a large-scale bent rudder post processing equipment according to an embodiment of this application;

[0055] Figure 2 This is a schematic diagram of the structure of the top tailstock according to an embodiment of this application;

[0056] Figure 3 This is a side view of the first bend center frame according to an embodiment of this application;

[0057] Figure 4This is a side view of the second bend center frame according to an embodiment of this application;

[0058] Figure 5 This is a schematic diagram of the bracket and chuck structure of Embodiment 1 of this application;

[0059] Figure 6 This is a schematic diagram of the commutation device and chuck according to Embodiment 2 of this application.

[0060] Figure 7 This is a schematic diagram of the chuck section before chuck switching in Embodiment 2 of this application;

[0061] Figure 8 This is a schematic diagram of the chuck after chuck reversal in Embodiment 2 of this application.

[0062] Explanation of reference numerals in the attached figures:

[0063] 1. Bed; 11. First guide rail; 12. Second guide rail;

[0064] 2. Workpiece fixing device;

[0065] 21. Top tailstock; 211. Base; 212. Top seat; 213. Top;

[0066] 22. First central frame group;

[0067] 23. Second central frame assembly; 231. Lower support plate; 232. Support frame; 233. Pressure plate; 234. Support groove; 235. Support column;

[0068] 24. Bracket;

[0069] 25. Chuck; 251. Chuck body; 252. Horizontal jaw; 253. Vertical jaw; 254. Horizontal guide groove; 255. Vertical guide groove; 256. Horizontal lead screw; 257. Vertical lead screw;

[0070] 3. Rotary ring tool post;

[0071] 4. Bent rudder stock; 41. Cylindrical section; 42. Bent section;

[0072] 5. Reversing device; 51. Linkage mechanism; 52. Rotating shaft; 53. Slide groove; 54. Connecting column; 55. Lever. Detailed Implementation

[0073] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" 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 this invention and simplifying the description, and are not intended to 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 invention.

[0074] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0075] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0076] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0077] The present invention will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0078] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0079] Embodiment 1 of this application discloses a large-scale bending rudder post processing equipment. (Refer to...) Figure 1 A large-scale curved rudder stick 4 machining equipment includes a bed 1, a workpiece fixing device 2, and a rotary ring tool holder 3. The bed 1 includes a first guide rail 11 and a second guide rail 12 arranged in parallel. The workpiece fixing device 2 is used to fix the curved rudder stick 4 workpiece to be machined. The workpiece fixing device 2 includes a center tailstock 21, a first center support assembly 22, a second center support assembly 23, and a bracket 24 sequentially mounted on the first guide rail 11 and the second guide rail 12 of the bed 1, and a chuck 25 mounted at one end of the guide rail on the bed 1. The center tailstock 21 and the chuck 25 respectively fix the circular end of the cylindrical section 41 and the trapezoidal end of the curved section 42 of the curved rudder stick 4 workpiece. The rotary ring tool holder 3 is used to mount turning tools for machining the cylindrical section 41 of the curved rudder stick 4. The cylindrical section 41 of the curved rudder stick 4 passes through the rotary ring tool holder 3. During machining, the curved rudder stick 4 workpiece remains stationary, while the cutting tool on the rotary ring tool holder 3 rotates around the workpiece to perform turning machining.

[0080] Reference Figure 2 The center tailstock 21 is slidably connected to the first guide rail 11 and the second guide rail 12, and the center tailstock 21 presses against one end of the cylindrical section 41 of the bent rudder 4 workpiece. Specifically, the center tailstock 21 includes a base 211, a center seat 212, and a center 213. The base 211 is slidably connected to the first guide rail 11 and the second guide rail 12. The center seat 212 is slidably connected to the base 211, and the center seat 212 can move on the base 211 along a length direction perpendicular to the first guide rail 11. The center 213 is fixed on the side of the center seat 212 facing the chuck 25. Further, the center seat 212 is vertically L-shaped, with the end of the horizontal arm of the center seat 212 facing the chuck 25. The center 213 is fixed to the end of the horizontal arm of the center seat 212, and the height of the center 213 is the same as the annular center of the rotary ring tool holder 3. The center seat 212 of the center tailstock 21 extends forward to avoid interference when it moves to the end of the bent rudder 4 during rotary machining.

[0081] Reference Figure 1 as well as Figure 3 and Figure 4The first center frame assembly 22 is slidably connected to the first guide rail 11 and located between the center tailstock 21 and the chuck 25. The first center frame assembly 22 includes two first bend-diameter center frames, which are used to clamp the two ends of the cylindrical section 41 of the bent rudder stick 4 workpiece. The second center frame assembly 23 includes two second bend-diameter center frames, which are slidably connected to the second guide rail 12 and located between the first center frame assembly 22 and the chuck 25. The two second bend-diameter center frames are used to clamp the cylindrical section 41 of the bent rudder stick 4 workpiece.

[0082] Specifically, the first and second bend center frames have the same structure but are installed in opposite directions. Both include a lower support plate 231, a support frame 232, and a pressure plate 233. The lower support plate 231 is slidably connected to the first guide rail 11 or the second guide rail 12. The support frame 232 is slidably connected to the lower support plate 231 and can move along the length direction perpendicular to the first guide rail 11 on the lower support plate 231. The upper end of the support frame 232 forms an upward-opening arc-shaped support groove 234. The pressure plate 233 is inverted V-shaped, and the two ends of the V-shape of the pressure plate 233 are respectively hinged to the two ends of the arc shape of the support groove 234 by bolts. The inner side of the pressure plate 233 clamps the circumference of the cylindrical section 41 of the bent rudder 4 workpiece with the end of the support column 235. The support column 235 is provided in the support groove 234 and can extend and retract radially along the arc shape, thereby enabling fine adjustment of the height of the cylindrical section 41 of the bent rudder 4.

[0083] Reference Figure 1 as well as Figure 5 The chuck 25 is fixed to the bed 1 with its surface parallel to the length direction of the first guide rail 11. The chuck 25 clamps one square end of the bent rudder stick 4 workpiece. Specifically, the chuck 25 includes a chuck body 251, horizontal jaws 252, and vertical jaws 253. The central axis of the chuck body 251 coincides with the central axis of the cylindrical section 41 of the bent rudder stick 4 workpiece. A horizontal guide groove 254 and a vertical guide groove 255 are provided on the side of the chuck body 251 facing the center tailstock 21. The horizontal guide groove 254 and the vertical guide groove 255 are located on the diameter of the chuck body 251. The horizontal jaw 252 is slidably engaged in the horizontal guide groove 254. The vertical jaw 253 is slidably engaged in the vertical guide groove 255. During machining, the vertical jaw 253 abuts against the two waists of the trapezoidal end of the bent rudder stick 4 workpiece, and the horizontal jaw 252 abuts against the top and bottom edges of the trapezoidal end of the bent rudder stick 4 workpiece.

[0084] Reference Figure 1 as well as Figure 5The bracket 24 is slidably connected to the first guide rail 11. The bracket 24 is located between the second bend center frame and the chuck 25. The bracket 24 is used to support the bent section 42 and trapezoidal end of the bent rudder rod 4. Specifically, the bracket 24 includes a support base and a support device mounted on the support base. The support device assists in supporting the bent section 42 and the trapezoidal flange at the end of the bent rudder rod 4, preventing the chuck 25 from rotating due to uneven weight distribution. Further, the support device can be a jack.

[0085] Reference Figure 1 The rotary ring tool holder 3 is mounted on the second guide rail 12 and located between the two first bend center supports. The rotary ring tool holder 3 can move along the length of the second guide rail 12. The ring center of the rotary ring tool holder 3 passes through the workpiece of the bent rudder rod 4, and the turning tool is installed inside the ring of the rotary ring tool holder 3.

[0086] The implementation principle of a large curved rudder stock processing device in this application embodiment is as follows:

[0087] During the operation, the scribing lines of the workpiece to be processed, including the center line of the shaft end and the center line of the end of the curved section 42, are first determined. Then, a bracket 24, two second-curved-diameter center supports, one first-curved-diameter center support, a rotary ring tool post 3, another first-curved-diameter center support, and a center tailstock 21 are installed on the bed 1. The workpiece to be processed is hoisted onto the bracket 24, the shaft end passes through the rotary ring tool post 3 and rests on the first and second curved-diameter center supports. By adjusting the center tailstock 21, the first and second curved-diameter center supports and the chuck 25, the center of the workpiece to be processed is aligned with the center of the rotary ring tool post 3. Then, the chuck 25 is clamped and the pressure plates 233 of the first and second curved-diameter center supports are fixed. The rotary ring tool post 3 is started to drive the tool to turn the shaft end.

[0088] It achieves the ability to process curved rudder posts with high stability and precision while reducing the size of the processing equipment.

[0089] Embodiment 2 of this application discloses a large bending rudder post 4 processing equipment.

[0090] This application discloses an underwater indicator light. Based on the above embodiment one, the difference in this embodiment is that: Figures 6 to 8As shown, a horizontal lead screw 256 is provided in the horizontal guide groove 254, and the horizontal lead screw 256 has two symmetrical threads. A pair of horizontal jaws 252 are threadedly connected to the horizontal lead screw 256 and can rotate in the direction of the surface of the disc body 251. When the horizontal lead screw 256 rotates, the pair of horizontal jaws 252 slide along the horizontal guide groove 254, moving closer or further apart from each other. When the pair of horizontal jaws 252 abut against the bent rudder rod 4 workpiece, they rotate to fit against the two sides of the trapezoidal end, thus fixing it horizontally. In this embodiment, the rotatable design of the horizontal jaws 252 allows them to adaptively adjust their contact posture according to the inclination angle of the trapezoidal side, so that the clamping force acts perpendicularly on the trapezoidal surface. The horizontal jaws 252 synchronously adjust to match their rotatable characteristics, so that when the two jaws abut against the top and bottom edges of the trapezoidal end, they can automatically rotate to an angle that is completely in contact with the trapezoidal side, avoiding local gaps caused by positional deviations.

[0091] A vertical lead screw 257 is provided in the vertical guide groove 255, and the vertical lead screw 257 has two symmetrical threads. A pair of vertical jaws 253 are threadedly connected to the vertical lead screw 257. When the vertical lead screw 257 rotates, the pair of vertical jaws 253 slide along the vertical guide groove 255, moving closer or further apart from each other. Among them, the vertical jaw 253 located below the trapezoidal flange end of the bent rudder stick 4 workpiece also bears its weight, while the vertical jaw 253 located above the trapezoidal flange end of the bent rudder stick 4 workpiece only serves to clamp and fix it.

[0092] Among them, such as Figure 6 As shown, to address the issue of inconsistent wear on the vertical jaws 253, a reversing device 5 is also provided. Specifically, the reversing device 5 includes a linkage mechanism 51 and a lever 55. The linkage mechanism 51 is mounted on the bed 1 below the chuck 25. The linkage mechanism 51 has a rotating shaft 52 in its middle. A sliding groove 53 is provided at each end of the linkage mechanism 51. A connecting column 54 that can slide within the sliding groove 53 is provided. The connecting column 54 is connected to the bracket 24 at the trapezoidal end of the curved section 42 of the corresponding support curved rudder rod 4. When the linkage mechanism 51 rotates around the rotating shaft 52, the connecting column 54 slides in the sliding groove 53, causing the corresponding bracket 24 to move away from or closer to the chuck body 251. Two levers 55 are provided, located at the upper and lower ends of the chuck body 251, respectively. The lever 55 located at the lower end of the chuck body 251 correspondingly actuates the linkage mechanism 51, allowing the chuck body 251 to rotate around its central axis and be fixed to the bed 1. After the processing is completed and the bent rudder 4 is removed, the disc body 251 rotates 180° so that the two levers 55 rotate accordingly, actuating the linkage mechanism 51 and causing the bracket 24 near the disc body 251 to move away from the disc body 251, and the bracket 24 away from the disc body 251 to move closer to the disc body 251.

[0093] The chuck 25's body 251 is rotatable, allowing the direction of the vertical jaws 253 to be changed. After the workpiece 4 is processed and removed from the chuck 25, the chuck 25 rotates due to its center being biased to one side and is driven by a motor to rotate 180°. When the chuck 25 rotates, the bracket 24 supporting the trapezoidal end of the curved section 42 of the curved rudder 4 is moved to the other side via a reversing mechanism. This requires changing the position when installing the workpiece 4 to be processed next. Furthermore, after rotation, the vertical direction of a pair of vertical jaws 253 is switched, so that the vertical jaw 253 that was below in the previous processing is converted to the vertical jaw 253 that is above in the next processing. This solves the problem of excessive wear between the lower vertical jaw 253 and the vertical screw 257, making the thread wear at both ends of the vertical screw 257 even, thereby enabling stable clamping and improving the processing accuracy of the curved rudder 4.

[0094] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A large-scale bending rudder post processing equipment, characterized in that, include: The bed (1) includes a first guide rail (11) and a second guide rail (12) arranged in parallel. A workpiece fixing device (2), used to fix the bent rudder rod (4) workpiece to be processed, includes: The top tailstock (21) is slidably connected to the first guide rail (11) and the second guide rail (12). The top tailstock (21) presses against one end of the cylindrical section (41) of the bent rudder rod (4) workpiece. A chuck (25) is fixed to the bed (1) and the chuck surface is parallel to the length direction of the first guide rail (11). The chuck (25) clamps the square end of the bent rudder rod (4) workpiece. The first center frame assembly (22) is slidably connected to the first guide rail (11) and located between the center tailstock (21) and the chuck (25). The first center frame assembly (22) includes two first bend-diameter center frames, which are used to clamp the two ends of the cylindrical section (41) to be processed of the bent rudder rod (4) workpiece respectively. A rotary ring tool holder (3) is provided on the second guide rail (12) and located between two first bend center frames. The rotary ring tool holder (3) can move along the length direction of the second guide rail (12). The ring center of the rotary ring tool holder (3) passes through the bent rudder rod (4) workpiece. Turning tools are installed inside the ring of the rotary ring tool holder (3). The workpiece fixing device (2) also includes two brackets (24), which are slidably connected to the first guide rail (11) and the second guide rail (12) respectively. The brackets (24) are located between the first center frame group (22) and the chuck (25). The brackets (24) are used to support the bent section (42) and trapezoidal end of the bent rudder rod (4) workpiece. The chuck (25) includes a chuck body (251), a pair of horizontal jaws (252) and a pair of vertical jaws (253); It also includes a commutation device (5), which comprises: A linkage mechanism (51) is provided on the bed (1) below the chuck (25). The linkage mechanism (51) has a rotating shaft (52) in the middle. A sliding groove (53) is opened at both ends of the linkage mechanism (51). A connecting column (54) that can slide in the sliding groove (53) is provided. The connecting column (54) is connected to the bracket (24) at the trapezoidal end of the curved section (42) of the corresponding support curved rudder rod (4). When the linkage mechanism (51) rotates around the rotating shaft (52), the connecting column (54) slides in the sliding groove (53) and drives the corresponding bracket (24) away from or close to the chuck body (251). There are two levers (55), which are respectively located at the upper end and the lower end of the disc body (251). The lever (55) located at the lower end of the disc body (251) moves the linkage mechanism (51). The disc body (251) is fixed to the bed (1) and can rotate around its central axis. After the processing is completed and the bent rudder stick (4) is removed, the disc body (251) rotates 180° so that the two levers (55) rotate accordingly and actuate the linkage mechanism (51) so that the bracket (24) close to the disc body (251) moves away from the disc body (251) and the bracket (24) away from the disc body (251) moves closer to the disc body (251).

2. The large-scale bent rudder post processing equipment according to claim 1, characterized in that, The workpiece fixing device (2) further includes a second center frame group (23), which includes two second bend center frames. The two second bend center frames are slidably connected to the second guide rail (12) and located between the first center frame group (22) and the chuck (25). The two second bend center frames are used to clamp the cylindrical section (41) of the bent rudder rod (4) workpiece.

3. The large-scale bent rudder post processing equipment according to claim 2, characterized in that, Both the first and second bend center frames include a lower support plate (231), a support frame (232), and a pressure plate (233); The lower support plate (231) is slidably connected to the first guide rail (11) or the second guide rail (12); The support frame (232) is slidably connected to the lower support plate (231). The support frame (232) can move on the lower support plate (231) along the length direction perpendicular to the first guide rail (11). The upper end of the support frame (232) has an upward-opening arc-shaped support groove (234). The pressure plate (233) is in the shape of an inverted V. The two ends of the V-shape of the pressure plate (233) are respectively hinged to the two ends of the arc of the support groove (234) by bolts. The inner side of the pressure plate (233) and the end of the support column (235) clamp the cylindrical section (41) of the bent rudder rod (4) workpiece.

4. A large-scale bent rudder post processing equipment according to claim 3, characterized in that, A support column (235) is provided in the support groove (234), and the support column (235) can extend and retract radially along the arc.

5. A large-scale bent rudder post processing equipment according to claim 1, characterized in that, The tip tailstock (21) includes a base (211), a tip seat (212), and a tip (213); The base (211) is slidably connected to the first guide rail (11) and the second guide rail (12); The top seat (212) is slidably connected to the base (211), and the top seat (212) can move on the base (211) along the length direction perpendicular to the first guide rail (11); The tip (213) is fixed on the side of the tip seat (212) facing the chuck (25).

6. A large-scale bent rudder post processing equipment according to claim 5, characterized in that, The top seat (212) is vertically L-shaped, with the end of the horizontal arm of the top seat (212) facing the chuck (25), and the top (213) is fixed to the end of the horizontal arm of the top seat (212).

7. A large-scale curved rudder post processing equipment according to claim 1, characterized in that, The disc body (251) is fixed on the bed (1). The central axis of the disc body (251) coincides with the central axis of the cylindrical section (41) of the bent rudder rod (4) workpiece. The disc body (251) has a horizontal guide groove (254) and a vertical guide groove (255) on the side facing the center tailstock (21). The horizontal guide groove (254) and the vertical guide groove (255) are located on the diameter of the disc body (251). The pair of horizontal claws (252) are slidably engaged in the horizontal guide groove (254); The pair of vertical claws (253) are slidably engaged in the vertical guide groove (255); During processing, the pair of vertical jaws (253) abut against the two waists of the trapezoidal end of the bent rudder rod (4) workpiece, and the pair of horizontal jaws (252) abut against the top and bottom edges of the trapezoidal end of the bent rudder rod (4) workpiece.

8. A large-scale curved rudder post processing equipment according to claim 7, characterized in that, A horizontal lead screw (256) is provided in the horizontal guide groove (254). The horizontal lead screw (256) has two symmetrical threads. A pair of horizontal jaws (252) are threadedly connected to the horizontal lead screw (256) and can rotate in the direction of the surface of the disc body (251). When the horizontal lead screw (256) rotates, the pair of horizontal jaws (252) slide along the horizontal guide groove (254) towards each other or away from each other. When the pair of horizontal jaws (252) press against the bent rudder rod (4) workpiece, they rotate to fit the two waist sides of the trapezoidal end. A vertical lead screw (257) is provided in the vertical guide groove (255). The vertical lead screw (257) has two symmetrical threads. A pair of vertical jaws (253) are threadedly connected to the vertical lead screw (257). When the vertical lead screw (257) rotates, the pair of vertical jaws (253) slide along the vertical guide groove (255) towards or away from each other.

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