Numerical control drilling equipment for round end frame of rocket
Patent Information
- Application Number
- CN202522588471.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-05
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-12-05
AI Technical Summary
[0004]本申请实施例通过提供一种火箭圆型端框数控钻孔设备，解决了目前采用摇臂钻床配合手动转台的方式对圆型端框进行钻孔存在效率低、精度差和劳动强度大的问题
[0011]本申请实施例提供的一种火箭圆型端框数控钻孔设备，该火箭圆型端框数控钻孔设备通过定位夹持机构对放置于回转平台的圆型端框进行自定心和夹持，通过夹紧机构夹紧圆型端框；在对圆型端框打孔时，根据打孔数量操作回转平台带动圆型端框转动预设角度，三维钻削机构对圆型端框的钻孔面进行钻孔，直至完成圆型端框上的全部钻孔任务。该火箭圆型端框数控钻孔设备减轻了工作人员的劳动强度，通过对三维钻削机构和回转平台的操作控制，高效且自动地完成对圆型端框的钻孔任务，并且回转平台能够准确地控制圆型端框的转动角度，定位夹持机构能够对圆型端框进行自定心，实现了更高的钻孔精度。
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Figure CN224896435U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of aerospace technology, and in particular to a CNC drilling device for rocket circular end frames. Background Technology
[0002] Circular end frames are critical load-bearing components in large spacecraft such as launch vehicles, satellite structures, and space station modules. They are commonly used in rocket propellant tank connecting rings and satellite main load-bearing cylinders. These components require numerous high-precision holes to be machined on their circumference for riveting, bolting, or bracket installation; therefore, drilling is a critical process in their manufacturing.
[0003] However, circular end frames are characterized by large diameter, poor rigidity, difficult-to-machine materials (such as high-strength aluminum alloys and titanium alloys), wide distribution of holes, and high precision requirements. Combined with limited working space, this presents significant technical challenges for drilling. Currently, although large gantry five-axis machining centers or dedicated circumferential drilling machines can meet the processing requirements, their high cost makes widespread adoption difficult. In actual production, radial drilling machines combined with manual rotary tables are often used, resulting in low efficiency, poor precision, and high labor intensity, which fails to meet the high-quality, high-consistency manufacturing requirements of modern spacecraft. Utility Model Content
[0004] This application provides a CNC drilling device for rocket circular end frames, which solves the problems of low efficiency, poor accuracy, and high labor intensity in the current method of drilling circular end frames using a radial drilling machine in conjunction with a manual turntable.
[0005] This application provides a CNC drilling device for a rocket circular end frame, comprising a rotary platform, a three-dimensional drilling mechanism, a positioning and clamping mechanism, and a clamping mechanism. The three-dimensional drilling mechanism is configured to drive a drill bit to move radially along the rotary platform, perpendicular to the end face of the rotary platform, and parallel to the tangential direction of the rotary platform, and to drive the drill bit to rotate. The positioning and clamping mechanism is mounted on the end face of the rotary platform and is configured to self-center the circular end frame located on the rotary platform so that the central axis of the circular end frame coincides with the central axis of the rotary platform, and to clamp the circular end frame from both the inner and outer sides. The clamping mechanism includes a plurality of annular clamping assemblies coaxially arranged with the rotary platform, and the plurality of annular clamping assemblies are mounted on the rotary platform.
[0006] In one possible implementation, the three-dimensional drilling mechanism includes a three-coordinate moving platform and a high-speed electric spindle; the moving direction of the working end of the three-coordinate moving platform includes the radial direction of the rotary platform, the direction perpendicular to the end face of the rotary platform, and the direction parallel to the tangential direction of the rotary platform; the high-speed electric spindle is mounted on the working end of the three-coordinate moving platform and is used to clamp the drill bit and drive the drill bit to rotate.
[0007] In one possible implementation, the positioning and clamping mechanism includes a plurality of linear actuators, a plurality of blocking members, and a plurality of manual locking members; the plurality of linear actuators are uniformly mounted on the end face of the rotary platform along the circumference of the rotary platform, and the actuation direction of each linear actuator is the radial direction of the rotary platform; the plurality of blocking members are connected one-to-one to the moving ends of the plurality of linear actuators, the plurality of manual locking members are connected one-to-one to the moving ends of the plurality of linear actuators, and there is a gap between the blocking members and the manual locking members located at the moving ends of the same linear actuator for placing the circular end frame.
[0008] In one possible implementation, the manual locking element includes a housing, a slider, a screw, an operating handle, and a stopper; the housing is mounted on the moving end of the linear actuator and has a threaded hole and a sliding channel along the radial direction of the rotary platform; one end of the slider is located inside the sliding channel, and the other end of the slider is located outside the sliding channel and connected to the stopper; the screw is mounted in the threaded hole, one end of the screw is rotatably connected to the slider, and the other end of the screw is connected to the operating handle.
[0009] In one possible implementation, the abutment has a V-shaped structure with the opening facing the corresponding blocking member.
[0010] In one possible implementation, the annular clamping assembly includes a plurality of first quick clamps and a plurality of second quick clamps; the plurality of first quick clamps and the plurality of second quick clamps are all arranged around the axis of the rotary platform, the plurality of first quick clamps are configured to press against the drilling surface of the circular end frame, and the plurality of second quick clamps are configured to press against the outer surface of the drilling surface orthogonal to the circular end frame.
[0011] This application provides a CNC drilling device for rocket circular end frames. This device uses a positioning and clamping mechanism to self-center and clamp the circular end frame placed on a rotary platform, and a clamping mechanism to hold the circular end frame securely. When drilling holes in the circular end frame, the rotary platform is operated to rotate the circular end frame by a preset angle according to the number of holes to be drilled. A three-dimensional drilling mechanism drills the drilling surfaces of the circular end frame until all drilling is completed. This CNC drilling device for rocket circular end frames reduces the labor intensity of workers. Through the operation and control of the three-dimensional drilling mechanism and the rotary platform, it efficiently and automatically completes the drilling task of the circular end frame. Furthermore, the rotary platform can accurately control the rotation angle of the circular end frame, and the positioning and clamping mechanism can self-center the circular end frame, achieving higher drilling accuracy. Attached Figure Description
[0012] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1 This is a schematic diagram of the structure of the CNC drilling equipment for the circular end frame of a rocket provided in an embodiment of this application; Figure 2 This is a schematic diagram of the structure of the three-dimensional drilling mechanism provided in the embodiments of this application; Figure 3 This is a schematic diagram of the positioning and clamping mechanism provided in the embodiments of this application; Figure 4 A schematic diagram showing the rotatable connection between the screw and the slider of the manual locking component provided in an embodiment of this application; Figure 5 This is a schematic diagram of the structure of the annular clamping assembly provided in the embodiments of this application.
[0014] Reference numerals: 100-rotary platform; 200-three-dimensional drilling mechanism; 210-three-axis moving platform; 220-high-speed electric spindle; 300-positioning and clamping mechanism; 310-linear actuator; 320-blocking component; 330-manual locking component; 331-housing; 332-slider; 333-screw; 334-operating handle; 335-stopping component; 400-clamping mechanism; 410-ring clamping assembly; 411-first quick clamp; 412-second quick clamp; 500-circular end frame. Detailed Implementation
[0015] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0016] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "inner," and "outer," etc., 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 the embodiments of this application and for simplifying the description, and do not 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 application. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.
[0017] This application provides a CNC drilling device for rocket circular end frames, such as... Figure 1 As shown, the CNC drilling equipment for the rocket's circular end frame includes a rotary platform 100, a three-dimensional drilling mechanism 200, a positioning and clamping mechanism 300, and a clamping mechanism 400.
[0018] The rotary platform 100 serves as the reference platform for the entire CNC drilling equipment for the rocket's circular end frame. The end face of the rotary platform 100 supports the circular end frame 500 to be machined and can be driven by a servo motor or stepper motor to achieve precise angular rotation. The rotation center of the rotary platform 100 is the geometric center of the CNC drilling equipment for the rocket's circular end frame, and also the reference axis for all subsequent positioning and machining operations.
[0019] The three-dimensional drilling mechanism 200 is configured to move the drill bit in the radial direction of the rotary platform 100, in the direction perpendicular to the end face of the rotary platform 100, and in the direction parallel to the tangential direction of the rotary platform 100, and to drive the drill bit to rotate.
[0020] The positioning and clamping mechanism 300 is mounted on the end face of the rotary platform 100 and is configured to self-center the circular end frame 500 located on the rotary platform 100 so that the central axis of the circular end frame 500 coincides with the central axis of the rotary platform 100, and clamp it from the inner and outer sides of the circular end frame 500.
[0021] Self-centering means that no matter how the initial placement position of the circular end frame 500 is offset, the geometric center of the circular end frame 500 is automatically aligned with the rotation center of the rotary platform 100 through the symmetrical arrangement and synchronous action of the positioning and clamping mechanism 300.
[0022] The positioning and clamping mechanism 300 applies clamping force from both the inner and outer sides of the circular end frame 500 simultaneously to prevent the circular end frame 500 from moving axially or radially during the drilling process.
[0023] The clamping mechanism 400 includes a plurality of annular clamping assemblies 410 coaxially arranged with the rotary platform 100, and the plurality of annular clamping assemblies 410 are mounted on the rotary platform 100. The clamping mechanism 400 further enhances the clamping stability, and the plurality of annular clamping assemblies 410 can apply clamping force to the circular end frame 500, effectively suppressing drilling vibration and improving machining rigidity.
[0024] When the CNC drilling equipment for the rocket's circular end frame drills holes in the 500mm circular end frame.
[0025] Therefore, the CNC drilling equipment for the rocket's circular end frame reduces the labor intensity of the workers. Through the operation and control of the three-dimensional drilling mechanism 200 and the rotary platform 100, the drilling task of the circular end frame 500 is completed efficiently and automatically. Furthermore, the rotary platform 100 can accurately control the rotation angle of the circular end frame 500, and the positioning and clamping mechanism 300 can self-center the circular end frame 500, achieving higher drilling accuracy.
[0026] like Figure 2 As shown in this embodiment, the three-dimensional drilling mechanism 200 includes a three-coordinate moving platform 210 and a high-speed electric spindle 220. The moving directions of the working end of the three-coordinate moving platform 210 include the radial direction of the rotary platform 100, the direction perpendicular to the end face of the rotary platform 100, and the direction parallel to the tangential direction of the rotary platform 100. The high-speed electric spindle 220 is mounted on the working end of the three-coordinate moving platform 210 and is used to clamp the drill bit and drive the drill bit to rotate.
[0027] For example, the three-axis moving platform 210 includes three linear modules: the X-axis linear module corresponds to the tangential direction, the Y-axis linear module corresponds to the radial direction, and the Z-axis linear module corresponds to the direction perpendicular to the end face of the rotary platform 100. Each axis linear module is driven by a servo motor to drive a ball screw or linear motor to achieve high-precision positioning, and a high-speed electric spindle 220 is mounted on the Y-axis linear module.
[0028] When the CNC drilling equipment for the rocket's circular end frame is in operation, it coordinates the movement of the three-axis moving platform 210 and the rotation of the rotary platform 100 according to the preset hole position coordinates of the circular end frame 500, thereby achieving drilling at any position in space. For example, when it is necessary to open 18 equally spaced holes on the drilling surface of the circular end frame 500, the rotary platform 100 rotates 20° each time, and the three-dimensional drilling mechanism 200 completes one drilling operation at a fixed radial position. The machining is completed in 18 cycles.
[0029] like Figure 1As shown, in this embodiment, the positioning and clamping mechanism 300 includes a plurality of linear actuators 310, a plurality of blocking members 320, and a plurality of manual locking members 330. The plurality of linear actuators 310 are uniformly mounted on the end face of the rotary platform 100 along its circumference, and the actuation direction of each linear actuator 310 is radial to the rotary platform 100. The plurality of blocking members 320 are connected one-to-one to the moving ends of the plurality of linear actuators 310, and the plurality of manual locking members 330 are connected one-to-one to the moving ends of the plurality of linear actuators 310. Figure 3 As shown, there is a gap between the blocking member 320 and the manual locking member 330 located at the moving end of the same linear actuator 310 for placing the circular end frame 500.
[0030] For example, in Figure 1 In the CNC drilling equipment for the rocket circular end frame shown, eight linear actuators 310 are evenly installed on the end face of the rotary platform 100 along the circumference of the rotary platform 100, eight blocking elements 320 are connected one-to-one to the moving ends of multiple linear actuators 310, and eight manual locking elements 330 are connected one-to-one to the moving ends of multiple linear actuators 310; wherein, the linear actuators 310 can be servo electric cylinders.
[0031] When the positioning and clamping mechanism 300 is working, firstly, according to the size of the circular end frame 500, the linear actuators 310 are adjusted synchronously so that the circular end frame 500 is placed on the end face of the rotary platform 100 and the circular end frame 500 is located in the gap formed between the blocking member 320 and the manual locking member 330; then, the multiple linear actuators 310 are controlled to move synchronously in the radial direction until the multiple blocking members 320 press against the inner side of the circular end frame 500, at which point the self-centering of the circular end frame 500 is completed; finally, the multiple locking members are manually operated so that the locking members press against the outer side of the circular end frame 500.
[0032] The positioning and clamping mechanism 300 has a structure that can achieve self-centering without complex sensors. It is simple and reliable, and can quickly clamp the circular end frame 500.
[0033] Specifically, refer to Figure 3 and Figure 4 The manual locking component 330 includes a housing 331, a slider 332, a screw 333, an operating handle 334, and a stopper 335. The housing 331 is mounted on the moving end of the linear actuator 310 and has a threaded hole and a sliding channel along the radial direction of the rotary platform 100. One end of the slider 332 is located inside the sliding channel, and the other end is located outside the sliding channel and connected to the stopper 335. The screw 333 is mounted in the threaded hole, with one end rotatably connected to the slider 332 and the other end connected to the operating handle 334.
[0034] When the manual locking part 330 is operated, the rotating operating handle 334 drives the screw 333 to rotate. Since the screw 333 is threadedly engaged with the housing 331, its rotational motion is converted into axial displacement, which in turn pushes the slider 332 to move radially along the sliding channel, and finally drives the clamping part 335 to press against the outer side of the round end frame 500.
[0035] The locking component is connected to the housing 331 by a screw 333, which gives the manual locking component 330 good self-locking ability and makes it less likely to loosen during drilling.
[0036] Furthermore, the clamping member 335 has a V-shaped structure, and its opening faces the corresponding blocking member 320. The V-shaped clamping member 335 can more stably clamp against the outside of the circular end frame 500.
[0037] In the embodiments of this application, such as Figure 5 As shown, the annular clamping assembly 410 includes a plurality of first quick clamps 411 and a plurality of second quick clamps 412. Both the plurality of first quick clamps 411 and the plurality of second quick clamps 412 are arranged about the axis of the rotary platform 100. The plurality of first quick clamps 411 are configured to clamp the drilling surface of the circular end frame 500, and the plurality of second quick clamps 412 are configured to clamp the outer surface orthogonal to the drilling surface of the circular end frame 500.
[0038] The first quick clamp 411 presses against the top surface of the circular end frame 500 from above, i.e., the drilling surface, to prevent the circular end frame 500 from tilting upwards when the drill bit is pressed down. The second quick clamp 412 presses against the outer surface of the circular end frame 500 orthogonal to the drilling surface from the horizontal direction to suppress torsion or slippage caused by tangential force.
[0039] The specific structure of the annular clamping assembly 410 described above effectively suppresses the combined vibration during the drilling process through multi-directional clamping, significantly improving hole position accuracy and surface quality.
[0040] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.
[0041] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.
Claims
1. A CNC drilling device for a rocket circular end frame, characterized in that, include: Slewing platform; A three-dimensional drilling mechanism is configured to move a drill bit in a radial direction, a direction perpendicular to the end face of the rotary platform, and a direction parallel to the tangential direction of the rotary platform, and to drive the drill bit to rotate. A positioning and clamping mechanism is installed on the end face of the rotary platform and configured to self-center the circular end frame located on the rotary platform so that the central axis of the circular end frame coincides with the central axis of the rotary platform, and clamp the circular end frame from both the inner and outer sides. as well as A clamping mechanism, comprising a plurality of annular clamping assemblies coaxially arranged with the rotary platform, the plurality of annular clamping assemblies being mounted on the rotary platform.
2. The CNC drilling equipment for rocket circular end frames according to claim 1, characterized in that, The three-dimensional drilling mechanism includes a three-axis moving platform and a high-speed electric spindle; The moving directions of the working end of the three-coordinate moving platform include the radial direction of the rotary platform, the direction perpendicular to the end face of the rotary platform, and the direction parallel to the tangential direction of the rotary platform; The high-speed electric spindle is installed at the working end of the three-coordinate moving platform and is used to clamp the drill bit and drive the drill bit to rotate.
3. The CNC drilling equipment for rocket circular end frames according to claim 1, characterized in that, The positioning and clamping mechanism includes multiple linear actuators, multiple blocking components, and multiple manual locking components; The plurality of linear actuators are uniformly installed on the end face of the rotary platform along the circumference of the rotary platform, and the actuation direction of each linear actuator is the radial direction of the rotary platform. The plurality of blocking members are connected one-to-one to the moving ends of the plurality of linear actuators, and the plurality of manual locking members are connected one-to-one to the moving ends of the plurality of linear actuators. There is a gap between the blocking members and the manual locking members located at the moving ends of the same linear actuator for placing the circular end frame.
4. The CNC drilling equipment for rocket circular end frames according to claim 3, characterized in that, The manual locking component includes a housing, a slider, a screw, an operating handle, and a clamping component; The housing is mounted on the moving end of the linear actuator, and has a threaded hole and a sliding channel provided along the radial direction of the rotary platform. One end of the slider is located inside the sliding channel, and the other end of the slider is located outside the sliding channel and connected to the abutment. The screw is installed in the threaded hole, one end of the screw is rotatably connected to the slider, and the other end of the screw is connected to the operating handle.
5. The CNC drilling equipment for rocket circular end frames according to claim 4, characterized in that, The abutment has a V-shaped structure, and the opening faces the corresponding blocking member.
6. The CNC drilling equipment for rocket circular end frames according to claim 1, characterized in that, The ring clamping assembly includes multiple first quick clamps and multiple second quick clamps; The plurality of first quick clamps and the plurality of second quick clamps are all arranged around the axis of the rotary platform. The plurality of first quick clamps are configured to press against the drilling surface of the circular end frame, and the plurality of second quick clamps are configured to press against the outer surface of the drilling surface orthogonal to the circular end frame.