A jig for machining the inner cavity of a launch beam shell
By designing fixtures for the base, moving push rod, sleeve, and launch beam body, the deformation and precision problems in the machining of the launch beam shell were solved, and high-precision internal cavity machining was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 新乡市航宏航空机电设备有限公司
- Filing Date
- 2025-07-11
- Publication Date
- 2026-07-17
AI Technical Summary
During the machining of the inner cavity of the launch beam shell, deformation is easily caused by clamping and the lack of support for the machining equipment, resulting in inaccurate precision.
Design a fixture that includes a base, a movable push rod, a sleeve, and a launch beam body. The launch beam position is restricted by a support plate and a positioning plate. The movable push rod and sleeve support the connecting shell. The fixture is combined with a bevel gear to drive the cutting tool for machining, thus avoiding problems such as excessive clamping force and lack of equipment support.
It effectively reduces deformation of the launch beam shell, ensures machining accuracy, prevents errors caused by equipment bending, and improves machining precision.
Smart Images
Figure CN224509061U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of rocket launch beam processing, and in particular relates to a fixture for processing the inner cavity of the launch beam shell. Background Technology
[0002] The rocket launch beam is a crucial component of a rocket launch system, primarily used to support and secure the rocket, ensuring its stability and safety during launch. Rocket launch beams are typically made of high-strength metal materials, possessing sufficient strength and rigidity to withstand the rocket's weight and the impact forces during launch. Its structural design must consider factors such as the rocket's size, weight, and center of gravity to ensure stability on the launch pad. Its main function is to support the rocket, maintaining it vertically or at a specific launch angle. Before launch, the launch beam must bear the rocket's static weight, and during launch, it must withstand the enormous thrust and impact forces generated by the rocket engine. Furthermore, the launch beam may be equipped with various sensors and monitoring equipment for real-time monitoring of the rocket's status and various parameters during launch. Further processing of the launch beam requires clamps to hold it in place and appropriate machining of its inner walls. However, in practical use, it still has the following drawbacks: In the machining of the inner cavity of the launch beam shell, a fixture is directly used for clamping and machining. However, clamping force is required when clamping the shell, which will cause the launch beam to deform during the machining of the inner cavity of the launch beam, affecting the machining accuracy of the launch beam. Secondly, during the processing of the launch beam shell, the processing equipment needs to extend into it. Due to the long length of the launch beam, as processing progresses, the end of the processing equipment is not supported, which will cause the end to bend and affect the accuracy of processing. Utility Model Content
[0003] The purpose of this utility model is to provide a fixture for machining the inner cavity of a launch beam shell. By setting up a base, a movable push rod, a sleeve and the launch beam body, it solves the problems of the launch beam shell machining clamping requiring clamping force, causing deformation of the launch beam shell, and the lack of support for the machining equipment inside the launch beam, which easily leads to bending and affects the machining accuracy.
[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a fixture for machining the inner cavity of a launch beam shell, comprising a base, a movable push rod, a sleeve, and a launch beam body. A support plate is fixed to the top of the base, and a positioning plate is fixed to the top of one end of the support plate. The launch beam body is mounted on the top of both the support plate and the positioning plate. The movable push rod and a connecting shell are disposed inside the launch beam body. The sleeve is fixedly connected to one end of the connecting shell that extends out of the launch beam body. A support bar is fixed to the center of the top of the positioning plate. The movable push rod passes through the upper part of the support bar. During operation, the launch beam body is supported by the support plate and the positioning plate at the top of the base. The movable push rod enters the launch beam body, passes through the support bar, and supports the connecting shell. The launch beam body is supported on the support plate and the positioning plate, thus limiting its position.
[0005] Furthermore, two clamping plates are arranged along the central axis on the top of the support plate, and both clamping plates are fixed to the top of the support plate to support and restrict the position of the launch beam body during processing.
[0006] Furthermore, limit blocks are fixed at the four corners of the top of the positioning plate, and two limit blocks at the top of the positioning plate are respectively set on both sides of the launch beam body. The limit blocks restrict the position of the launch beam body on the positioning plate.
[0007] Furthermore, the movable push rod has a slot at one end inside the launch beam body, and a locking block is fixed at the end of the connecting shell away from the sleeve. The locking block is inserted into the slot, and the slot on the movable push rod is movably connected to the locking block, supporting the end of the connecting shell away from the sleeve.
[0008] Furthermore, a rotating shaft is movably connected to both the sleeve and the connecting shell. A bevel gear is fixed at one end of the rotating shaft near the moving push rod. A bevel gear is rotatably connected to the top of the connecting shell. The two bevel gears mesh with each other. The output shaft of the bevel gear located at the top of the connecting shell passes through the top of the connecting shell and has a cutter fixed at its top. The top of the cutter abuts against the inner top of the launch beam body. When the cutter at the output end of the connecting shell is driven, it rotates to perform milling on the inner top of the launch beam body.
[0009] Furthermore, an opening 1 is provided at the bottom of the launch beam body corresponding to the position of the support bar, and the support bar is movably disposed in the opening 1. An opening 2 is provided at the bottom of the launch beam body corresponding to the position of the clamping plate, and the clamping plate is movably connected in the opening 2. The support bar is movably disposed at the opening 1 on the launch beam body, and the clamping plate is movably connected to the opening 2, thereby restricting the position of the launch beam body on the support plate.
[0010] This utility model has the following beneficial effects: This invention solves the problem of deformation of the launch beam shell caused by the clamping force required for processing and clamping by setting a base and a launch beam body. When supporting and restricting the launch beam body on the base and support plate, the two openings at the bottom of the launch beam body are aligned with the clamping plate on the support plate, so that the clamping plate enters the opening two on the launch beam body. At the same time, the support on the positioning plate enters the opening one on the launch beam body, and the limiting blocks are clamped on both sides of the launch beam body, so that the launch beam body is set on the base, restricting the launch beam body. The clamping force for clamping the launch beam shell is small, and the deformation of the launch beam body is smaller.
[0011] This invention solves the problem of insufficient support and easy bending of the launch beam shell processing equipment, which affects processing accuracy, by setting up a base, a movable push rod, a sleeve, and a launch beam body. The input end of the sleeve is connected to the output end of an external drive device. The pushing structure of the movable push rod drives the movable push rod to move into the launch beam body, and after passing through the support bar, it moves to the end of the connecting shell away from the sleeve. The locking block on the connecting shell enters the locking slot on the movable push rod, supporting the end of the connecting shell away from the sleeve. After the drive device is started, the drive device drives the tool to rotate, and at the same time, the movable push rod moves together with the connecting shell. The tool performs milling processing on the top of the launch beam body, so that the launch beam shell processing equipment can be well supported inside the launch beam, preventing processing errors caused by bending of the connecting shell. Attached Figure Description
[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1 This is a three-dimensional view of the structure of a jig used for machining the inner cavity of a launch beam shell, after being partially cut open. Figure 2 This is a three-dimensional structural diagram of the base; Figure 3 A three-dimensional structural diagram of the movable push rod; Figure 4 This is a three-dimensional view of the sleeve section after it has been cut open. Figure 5 A three-dimensional view of the main body of the launch beam from below; Figure 6 A perspective view of an assembly structure for a fixture used for machining the inner cavity of a launch beam shell; Figure 7 for Figure 4 Enlarged view of the structure at point A in the image.
[0014] Figure label: 1. Base; 101. Support plate; 102. Clamping plate; 103. Positioning plate; 104. Limiting block; 105. Support bar; 2. Moving push rod; 201. Bayonet; 3. Sleeve; 301. Connecting shell; 302. Cutting tool; 303. Clamping block; 304. Rotating shaft; 305. Bevel gear; 4. Launch beam body; 401. Opening one; 402. Opening two. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Specific Implementation
[0016] Please see Figure 1-7 This utility model relates to a fixture for machining the inner cavity of a launch beam shell, comprising a base 1, a movable push rod 2, a sleeve 3, and a launch beam body 4. A support plate 101 is fixed to the top of the base 1. During operation, the base 1 connects the support plate 101 and a positioning plate 103, supporting the support plate 101 and the positioning plate 103 on the worktable of the machining equipment. The positioning plate 103 is fixed to the top of the base 1 at one end of the support plate 101, positioning and limiting the position of the launch beam body 4. The launch beam body 4 is jointly mounted on the top of the support plate 101 and the positioning plate 103. The main body 4 of the launching beam is milled by connecting the movable push rod 2 and the sleeve 3. The movable push rod 2 and the connecting shell 301 are provided inside the main body 4 of the launching beam. The end of the connecting shell 301 that extends out of the main body 4 of the launching beam is fixedly connected to the sleeve 3. The connecting shell 301 extends into the main body 4 of the launching beam and works with the tool 302 to process the main body 4 of the launching beam. A support bar 105 is fixed at the top center of the positioning plate 103. The support bar 105 supports the movable push rod 2 in the main body 4 of the launching beam to reduce the bending deformation during processing. The movable push rod 2 passes through the upper part of the support bar 105 and is supported.
[0017] Specifically, two clamping plates 102 are arranged on the top of the support plate 101 along the central axis. Both clamping plates 102 are fixed to the top of the support plate 101, and the clamping plates 102 on the support plate 101 restrict the position between the launch beam body 4 and the support plate 101.
[0018] Furthermore, limit blocks 104 are fixed at the four corners of the top of the positioning plate 103. The two limit blocks 104 at the top of the positioning plate 103 are respectively set on both sides of the launch beam body 4, and the limit blocks 104 restrict the position of both sides of the launch beam body 4.
[0019] Furthermore, the movable push rod 2 is provided with a slot 201 at one end inside the launch beam body 4, and a locking block 303 is fixed at the end of the connecting shell 301 away from the sleeve 3. The locking block 303 is inserted into the slot 201. After the movable push rod 2 enters the launch beam body 4, it passes through the support bar 105 and moves to the locking block 303 on the connecting shell 301, which enters the slot 201 of the movable push rod 2 to support the end of the connecting shell 301 away from the sleeve 3.
[0020] Furthermore, a rotating shaft 304 is movably connected within the sleeve 3 and the connecting housing 301. A bevel gear 305 is fixed to one end of the rotating shaft 304 near the moving push rod 2. A bevel gear 305 is rotatably connected to the top of the connecting housing 301. The two bevel gears 305 mesh with each other. The output shaft of the bevel gear 305 located at the top of the connecting housing 301 passes through the top of the connecting housing 301 and a cutter 302 is fixed to its top. The top of the cutter 302 abuts against the inner top of the launching beam body 4. The rotating shaft 304 inside the sleeve 3 is connected to the external drive motor. The output end of the machine is connected, and the sleeve 3 is connected to the external feeding device. The drive motor that drives the rotating shaft 304 to rotate is fixed on the feeding device (which is a fully disclosed existing technology, so it is not described in detail). After the drive motor is started, the rotating shaft 304 is driven to rotate, which drives two meshing bevel gears 305 to rotate. When the bevel gears 305 rotate, they drive the cutter 302 to rotate, and drive the sleeve 3 and the connecting shell 301 to translate through the feeding device. The cutter 302 performs milling operations on the top of the launch beam body 4.
[0021] The operation process of this embodiment is as follows: During operation, the input end of the sleeve 3 is first connected to the output end of the external drive device. The pushing structure of the moving push rod 2 drives the moving push rod 2 to move into the launch beam body 4 and pass through the support bar 105. Then, it moves to the end of the connecting shell 301 away from the sleeve 3. The locking block 303 on the connecting shell 301 enters the locking slot 201 on the moving push rod 2 to support the end of the connecting shell 301 away from the sleeve 3. After the drive device is started, the drive device drives the cutter 302 to rotate. At the same time, the moving push rod 2 moves together with the connecting shell 301. The cutter 302 performs milling on the top of the launch beam body 4. Specific Implementation
[0022] Please see Figure 1 , 25. Based on the specific embodiment one, an opening 401 is opened at the bottom of the launch beam body 4 corresponding to the position of the support bar 105. The support bar 105 is movably disposed in the opening 401. An opening 402 is opened at the bottom of the launch beam body 4 corresponding to the position of the clamping plate 102. The clamping plate 102 is movably connected in the opening 402. The support bar 105 is installed in the opening 401 on the launch beam body 4. After entering the opening 402 through the clamping plate 102, the launch beam body 4 is disposed on the support plate 101.
[0023] The operation process of this embodiment is as follows: During operation, when it is necessary to support and restrict the launch beam body 4 on the base 1 and the support plate 101, the two openings 402 at the bottom of the launch beam body 4 are aligned with the clamping plate 102 on the support plate 101, so that the clamping plate 102 enters the opening 402 on the launch beam body 4. At the same time, the support on the positioning plate 103 enters the opening 401 on the launch beam body 4, and the limiting block 104 clamps on both sides of the launch beam body 4, so that the launch beam body 4 is set on the base 1 and the launch beam body 4 is properly restricted.
[0024] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present 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.
[0025] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A kind of launching beam shell inner cavity processing clamp, including base (1), moving push rod (2), sleeve (3) and launching beam main body (4), it is characterized by: A support plate (101) is fixed to the top of the base (1). A positioning plate (103) is fixed to the top of the base (1) at one end of the support plate (101). The top of the support plate (101) and the positioning plate (103) are jointly provided with a launch beam body (4). A movable push rod (2) and a connecting shell (301) are provided inside the launch beam body (4). A sleeve (3) is fixedly connected to one end of the connecting shell (301) that extends out of the launch beam body (4). A support strip (105) is fixed to the center of the top of the positioning plate (103). The movable push rod (2) passes through the upper part of the support strip (105).
2. The clamp for processing the inner cavity of a launching beam shell according to claim 1, characterized in that: Two clamping plates (102) are arranged along the central axis on the top of the support plate (101), and both clamping plates (102) are fixed to the top of the support plate (101).
3. The clamp for machining the inner cavity of a launch beam shell according to claim 1, characterized in that: Limiting blocks (104) are fixed at the four corners of the top of the positioning plate (103), and the two limiting blocks (104) at the top of the positioning plate (103) are respectively set on both sides of the launch beam body (4).
4. The clamp for machining the inner cavity of a launch beam shell according to claim 1, characterized in that: The movable push rod (2) is provided with a slot (201) at one end inside the launch beam body (4), and a locking block (303) is fixed at the end of the connecting shell (301) away from the sleeve (3), and the locking block (303) is inserted into the slot (201).
5. The clamp for machining the inner cavity of a launch beam shell according to claim 1, characterized in that: The sleeve (3) and the connecting shell (301) are movably connected to a rotating shaft (304). A bevel gear (305) is fixed at one end of the rotating shaft (304) near the moving push rod (2). A bevel gear (305) is rotatably connected to the top of the connecting shell (301). The two bevel gears (305) mesh with each other. The output shaft of the bevel gear (305) located at the top of the connecting shell (301) passes through the top of the connecting shell (301) and a cutter (302) is fixed at the top. The top of the cutter (302) abuts against the inner top of the launching beam body (4).
6. A fixture for machining the inner cavity of a launch beam shell according to claim 2, characterized in that: The bottom of the launch beam body (4) is provided with an opening one (401) corresponding to the position of the support bar (105), and the support bar (105) is movably disposed in the opening one (401). The bottom of the launch beam body (4) is provided with an opening two (402) corresponding to the position of the card plate (102), and the card plate (102) is movably connected in the opening two (402).