Air vane precision positioning tool

Abstract

This invention discloses a precision positioning fixture for air rudders, including a work platform and a frame. The fixture is used for automatic and precise correction and locking of the rudder shaft within the air rudder mold, and enables rapid and accurate mold locking and unlocking. A complete process flow is planned to meet technical requirements, and corresponding execution equipment is designed to achieve production automation, meet capacity requirements, improve production efficiency, and reduce manual labor. The overall design adheres to the principles of compact layout and optimal efficiency. A zero-point positioning device below the correction flange connects to the mold, facilitating the rotation of the rudder shaft lifting nut or the expansion sleeve pressing device. The rudder shaft lifting device and the expansion sleeve pressing device are used to rotate the lifting pin, further driving the rudder shaft upward, and to rotate the pressing pin, driving the expansion sleeve downward. The copper sleeve is pressed down to fit against the rudder shaft, achieving automatic centering. A rudder shaft height limiting device restricts the upper limit of the rudder shaft height, ensuring its dimensional accuracy.

Description

Technical Field

[0001] This invention relates to the field of precision positioning fixtures for air rudders, specifically to a precision positioning fixture for air rudders. Background Technology

[0002] Air rudders are crucial components of launch vehicles, used for attitude adjustment during flight to ensure vehicle stability and adherence to a predetermined trajectory. Traditional air rudder installation involves bolts connecting the outer side of the rudder shaft to the rudder surface, with the bolts protruding from the rocket body; the rudder shaft is installed by passing through two bearings, either back-to-back or face-to-face, with nuts clamping it on the inner side; a keyway is formed on the inner side of the rudder shaft, through which the rudder motor's output torque controls its oscillation.

[0003] An air rudder precision positioning fixture is used for automatic and precise correction and locking of the rudder shaft within the air rudder mold, and to achieve rapid and accurate mold locking and unlocking. Based on technical requirements, a complete process flow is planned, and corresponding execution equipment is designed to achieve production automation, meet capacity requirements, improve production efficiency, and reduce manual workload. The overall design adheres to the principles of compact layout and optimal efficiency, and based on this, an air rudder precision positioning fixture is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a precision positioning fixture for air rudders to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an air rudder precision positioning fixture, including a working platform and a frame, an automatic clamping and rotating device is fixedly installed on the top of the working platform and the frame, a rudder shaft straightening device is fixedly installed at the bottom of the automatic clamping and rotating device, and an air rudder quick-lock mold is fixedly installed on the top of the middle section of the working platform and the frame.

[0006] According to the above technical solution, an upper bracket is fixedly installed on the inner side of the top of the working platform and the frame, a limit block is fixedly installed on the inner side of the working platform and the frame, a tooling platform is fixedly installed on the top of the middle section of the working platform and the frame, and a limit guide plate is fixedly installed on the top of the tooling platform.

[0007] According to the above technical solution, a lifting electric cylinder is fixedly installed on the inner wall of the upper support, a servo motor is fixedly installed at the bottom of the lifting electric cylinder, a servo motor is fixedly installed at the right end of the reducer, a pneumatic chuck is fixedly installed at the bottom of the servo motor, and a guide rail is fixedly installed at the left end of the pneumatic chuck.

[0008] According to the above technical solution, a height limiting device is fixedly installed at the bottom of the pneumatic chuck, a sleeve pressing device is fixedly installed on the outside of the height limiting device, a rudder shaft lifting device is fixedly installed on the outside of the sleeve pressing device, an elastic centering sleeve is fixedly installed at the bottom of the sleeve pressing device, a straightening connecting flange is fixedly installed at the bottom of the rudder shaft lifting device, and an air-powered rudder shaft is fixedly installed at the bottom of the straightening connecting flange.

[0009] According to the above technical solution, a straightening fixture connector is fixedly installed at the bottom of the air-powered rudder shaft, an upper cover assembly is fixedly installed at the bottom of the straightening fixture connector, an air rudder is fixedly installed at the bottom of the upper cover assembly, a left cavity assembly is fixedly installed at the bottom of the upper cover assembly, a right cavity assembly is fixedly installed at the top right end of the upper cover assembly, and a rear cover assembly is fixedly installed at the right end of the upper cover assembly.

[0010] Compared with the prior art, the beneficial effects achieved by the present invention are: (1) In this invention, the air rudder precision positioning fixture is used to automatically and accurately correct and lock the position of the rudder shaft in the air rudder mold, and to realize the rapid and accurate mold locking and demolding of the air rudder mold. In response to technical requirements, a complete process flow is planned and corresponding execution equipment is designed to realize production automation, meet capacity requirements, improve production efficiency, and reduce manual workload. The overall design conforms to the principle of compact layout and optimal efficiency.

[0011] (2) In this invention, by setting a rudder shaft straightening device and connecting it to the mold through the zero-point positioning device below the straightening connecting flange, the rudder shaft lifting nut or the expansion sleeve pressing device can be conveniently rotated on it; the rudder shaft lifting device and the expansion sleeve pressing device are respectively used to rotate the lifting pin, further driving the rudder shaft to rise and rotate the pressing pin, further driving the expansion sleeve to press down; the elastic centering expansion sleeve inside the rudder shaft straightening device adopts a copper sleeve slotted structure, and the copper sleeve is pressed down and fits with the rudder shaft to achieve automatic centering; the rudder shaft height limiting device is used to limit the upper limit of the rudder shaft height to ensure its height dimension accuracy.

[0012] (3) In this invention, the customized master control system is designed based on Siemens programmable logic controllers by setting up an air rudder; Siemens medium and large-sized PLCs are selected, which have fast signal processing speed and can greatly shorten the system response time, thereby improving production efficiency; the customized master control system connects the subsystems in series through industrial Ethernet, thereby realizing the automated control of the entire production unit; the control system is equipped with a human-machine interaction system, which can display the status of each system, making it easier for operators to perform automatic control. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall tooling of the present invention; Figure 2 This is a schematic diagram of the working platform and frame of the present invention; Figure 3 This is a schematic diagram of the automatic clamping and rotating device of the present invention; Figure 4 This is a schematic diagram of the steering shaft correction device of the present invention; Figure 5 This is a schematic diagram of the air rudder quick-lock mold of the present invention; In the diagram: 100, Working platform and frame; 200, Automatic clamping and rotating device; 300, Rudder shaft straightening device; 400, Air rudder quick-lock mold; 101, Upper support; 102, Limiting guide plate; 103, Limiting block; 104, Mold locking hole; 105, Tooling platform; 201, Lifting cylinder; 202, Servo motor; 203, Reducer; 204, Guide rail; 205, Pneumatic chuck; 301, Rudder shaft lifting device; 302, Height limiting device; 303, Expansion sleeve pressing device; 304, Straightening connecting flange; 305, Elastic centering expansion sleeve; 306, Air-powered rudder shaft; 401, Upper cover assembly; 402, Air rudder; 403, Straightening tooling connector; 404, Right side cavity assembly; 405, Left side cavity assembly; 406, Rear cover assembly. Detailed Implementation

[0014] 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.

[0015] Please see Figure 1-5This invention provides a technical solution: a precision positioning fixture for an air rudder, comprising a work platform and a frame 100. An automatic clamping and rotating device 200 is fixedly installed on the top of the work platform and frame 100, and a rudder shaft straightening device 300 is fixedly installed on the bottom of the automatic clamping and rotating device 200. An air rudder quick-lock mold 400 is fixedly installed on the top of the middle section of the work platform and frame 100. An upper support 101 is fixedly installed on the inner side of the top of the work platform and frame 100, and a limit block 103 is fixedly installed on the inner side of the work platform and frame 100. A fixture platform 105 is fixedly installed on the top of the middle section of the work platform and frame 105, and a limit guide plate 102 is fixedly installed on the top of the fixture platform 105. A lifting electric cylinder 201 is fixedly installed on the inner wall of the upper support 101, and a servo motor 202 is fixedly installed on the bottom of the lifting electric cylinder 201. A servo motor 202 is fixedly installed on the right end of a reducer 203, and a pneumatic chuck 205 is fixedly installed on the bottom of the servo motor 202. A guide rail 204 is fixedly installed on the left end of the pneumatic chuck 205; a height limiting device 302 is fixedly installed on the bottom of the pneumatic chuck 205, a sleeve pressing device 303 is fixedly installed on the outside of the height limiting device 302, a rudder shaft lifting device 301 is fixedly installed on the outside of the sleeve pressing device 303, an elastic centering sleeve 305 is fixedly installed on the bottom of the sleeve pressing device 303, a straightening connecting flange 304 is fixedly installed on the bottom of the rudder shaft lifting device 301, an air-powered rudder shaft 306 is fixedly installed on the bottom of the straightening connecting flange 304; a straightening tooling connector 403 is fixedly installed on the bottom of the air-powered rudder shaft 306, an upper cover assembly 401 is fixedly installed on the bottom of the straightening tooling connector 403, an air rudder 402 is fixedly installed on the bottom of the upper cover assembly 401, a left side cavity assembly 405 is fixedly installed on the bottom of the upper cover assembly 401, a right side cavity assembly 404 is fixedly installed on the top right end of the upper cover assembly 401, and a rear cover assembly 406 is fixedly installed on the right end of the upper cover assembly 401.

[0016] The process flow is as follows: First, the pre-assembled material is placed in the mold and moved to the work platform. The mold separates by a certain distance, automatically corrects the material position, and then closes the mold again after correction. The main tasks include workpiece lifting, automatic correction, mold assembly, and mold separation. The overall steps are as follows: 1. Manual operation: The fabric and rudder shaft are manually laid into the left and right half molds; after laying, the left and right molds are closed; the fabric is cut and trimmed; the fabric is trimmed and sewn; the top cover is pre-assembled; screws are used for pre-locking, without quick locks; the mold is hoisted as a whole to the rudder shaft straightening station. 2. Correction preparation; Assemble the rudder shaft correction device 300 onto the mold; Loosen the top cover screws, raise the top cover to a certain height, so that the top cover pin is separated from the left and right molds; Separate the left and right half molds by a certain distance; 3. Correcting the rudder shaft: The upper chuck of the automatic clamping and rotating device 200 automatically descends to the lower nut locking position; the pneumatic chuck 205 clamps the lower nut and rotates it to lift the rudder shaft. When the rudder shaft reaches the upper limit position, the pneumatic chuck 205 releases; the upper chuck of the automatic clamping and rotating device 200 automatically descends to the upper nut position, and the pneumatic chuck 205 releases and clamps the upper nut to rotate it to lower the expansion sleeve; when the expansion sleeve and rudder shaft are fully engaged, the chuck releases, and the automatic clamping and rotating device returns to the upper limit position; the correction is complete. Place the upper cover and rudder shaft together into the left and right molds; close the left and right half molds; assemble the rear cover onto the mold. The work platform is bolted to the frame. The work platform is mainly used to place the mold. The platform is equipped with components such as limit blocks, limit guide plates, and mold locking holes to restrict the movement of the mold and ensure that the relative position of the automatic correction device and the rudder shaft remains unchanged. The limit blocks and guide plates are bolted to the work platform and can be removed manually. The frame is connected to the guide rail 204 to support the downward clamping and upward avoidance of the automatic clamping and rotating device 200. The automatic clamping and rotating device 200 mainly consists of a lifting electric cylinder 201, a servo motor 202, a reducer 203, a guide rail 204, and a pneumatic chuck 205. The lifting electric cylinder 201 drives the chuck to rise and fall along the guide rail 204, thereby realizing the automatic switching of the gripper position of the pneumatic chuck 205. The pneumatic chuck 205 is used to clamp the straightening device and is driven to rotate by the matching servo motor 202 and reducer 203. The rudder shaft straightening device 300 is connected to the mold via a zero-point positioning device below the straightening connecting flange, which facilitates the rotation of the rudder shaft lifting nut or the expansion sleeve pressing device on it. The rudder shaft lifting device and the expansion sleeve pressing device are respectively used to rotate the lifting pin, further driving the rudder shaft to rise, and to rotate the pressing pin, further driving the expansion sleeve to press down. The elastic centering expansion sleeve inside the rudder shaft straightening device 300 adopts a copper sleeve slotted structure. By pressing down the copper sleeve and fitting it with the rudder shaft, it achieves automatic centering. A rudder shaft height limiting device is used to limit the upper limit of the rudder shaft height to ensure its height dimensional accuracy. The air rudder quick-lock mold is mainly composed of the upper cover assembly 401, the rear cover assembly 406, and the left and right side cavity assemblies; each mold piece is connected by a zero-point positioning technology for quick locking, which can achieve quick mold disassembly and mold assembly of each component; This air rudder features a customized master control system based on Siemens programmable logic controllers (PLCs). It uses a medium-to-large Siemens PLC with fast signal processing speed, which can greatly shorten the system response time and thus improve production efficiency. The customized master control system connects all subsystems in series via industrial Ethernet, thereby realizing automated control of the entire production unit; the control system is equipped with a human-machine interface system that can display the status of each system, making it easier for operators to perform automatic control; The customized central control system reserves the necessary interfaces, allowing users to expand the control system; Human-Machine Interaction System: The human-machine interaction system adopts a touch screen and communicates with the PLC system via industrial Ethernet, working seamlessly with Siemens controllers; the display interface is in Chinese and can show equipment operating status and operation guidance; Electrical control cabinet: The electrical control cabinet adopts a standard control cabinet with an IP54 protection rating, which can effectively prevent dust; PLC, circuit breaker, and relay are centrally placed in the control cabinet for easy maintenance and repair; Control panel: The control panel adopts a sloping vertical design; the touch screen, buttons, and indicator lights are centrally located on the control panel, which is placed next to the equipment for easy operation; the control panel is equipped with three-color lights, green for automatic operation, yellow for automatic stop, and red for fault alarm, making it easy for manual observation of the equipment's operating status.

[0017] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0018] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An air vane precision positioning tooling, comprising a work platform and a frame (100), characterized in that: An automatic clamping and rotating device (200) is fixedly installed on the top of the work platform and the frame (100), a rudder shaft straightening device (300) is fixedly installed on the bottom of the automatic clamping and rotating device (200), and an air rudder quick-lock mold (400) is fixedly installed on the top of the middle section of the work platform and the frame (100). An upper bracket (101) is fixedly installed on the inner side of the top of the working platform and the frame (100). A limit block (103) is fixedly installed on the inner side of the working platform and the frame (100). A tooling platform (105) is fixedly installed on the top of the middle section of the working platform and the frame (100). A limit guide plate (102) is fixedly installed on the top of the tooling platform (105). A lifting cylinder (201) is fixedly installed on the inner wall of the upper support (101). A servo motor (202) is fixedly installed at the bottom of the lifting cylinder (201). A servo motor (202) is fixedly installed at the right end of the reducer (203). A pneumatic chuck (205) is fixedly installed at the bottom of the servo motor (202). A guide rail (204) is fixedly installed at the left end of the pneumatic chuck (205). A height limiting device (302) is fixedly installed at the bottom of the pneumatic chuck (205). A sleeve pressing device (303) is fixedly installed on the outside of the height limiting device (302). A rudder shaft lifting device (301) is fixedly installed on the outside of the sleeve pressing device (303). An elastic centering sleeve (305) is fixedly installed at the bottom of the sleeve pressing device (303). A straightening connecting flange (304) is fixedly installed at the bottom of the rudder shaft lifting device (301). An air-powered rudder shaft (306) is fixedly installed at the bottom of the straightening connecting flange (304). The pneumatic chuck (205) on the automatic clamping and rotating device (200) automatically descends to the lower nut locking position; the pneumatic chuck (205) clamps the lower nut and rotates it to drive the air-powered rudder shaft (306) to rise. When the air-powered rudder shaft (306) reaches the upper limit position, the pneumatic chuck (205) releases; the pneumatic chuck (205) on the automatic clamping and rotating device (200) automatically descends to the upper nut position, the pneumatic chuck (205) clamps the upper nut and rotates it to drive the elastic centering expansion sleeve (305) to descend; when the elastic centering expansion sleeve (305) and the air-powered rudder shaft (306) are fully engaged, the pneumatic chuck (205) releases, and the automatic clamping and rotating device (200) retracts to the upper limit position.

2. The precision positioning tooling for an airfoil according to claim 1, wherein: The bottom of the air-powered rudder shaft (306) is fixedly installed with a straightening fixture connector (403), the bottom of the straightening fixture connector (403) is fixedly installed with a top cover assembly (401), the bottom of the top cover assembly (401) is fixedly installed with an air rudder (402), the bottom of the top cover assembly (401) is fixedly installed with a left cavity assembly (405), the top right end of the top cover assembly (401) is fixedly installed with a right cavity assembly (404), and the right end of the top cover assembly (401) is fixedly installed with a rear cover assembly (406).

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