A drilling device for manufacturing fuselage frame molds

Abstract

This utility model discloses a drilling equipment for manufacturing machine frame molds, comprising: a base and a gantry frame, fixedly straddling both ends of the base along the X-axis; a drilling unit slidably mounted on the crossbeam of the gantry frame via a first linear drive mechanism to move along the Y-axis; the drilling unit having a spindle and a second linear drive mechanism for driving the spindle to feed along the Z-axis; a workpiece mounting platform, set on the base and located within the working area of ​​the gantry frame; a third linear drive mechanism connected to the workpiece mounting platform; and several sets of lateral drilling modules set on one side of the base. This application employs a gantry frame and a workpiece mounting platform that moves along the X, Y, and Z directions, simplifying the main frame of the equipment and increasing its rigidity and stability. Positioning in the X and Y axes is achieved by the drilling unit on the fixed crossbeam of the gantry frame, combined with its own Z-axis feed, forming a complete three-axis CNC drilling system.

Description

Technical Field

[0001] This utility model relates to the field of automatic drilling technology, specifically a drilling device for manufacturing machine frame molds. Background Technology

[0002] Fuselage molds are key process equipment used in aircraft manufacturing to support, position, and assemble aircraft components. Their molds are typically large in size, complex in shape, and require high structural rigidity. During the manufacturing and repair of fuselage molds, numerous drilling operations are frequently required at different locations and angles to meet the needs of locator installation, piping routing, and weight reduction.

[0003] Currently, drilling of such large molds mainly relies on the following methods: first, using large gantry machining centers or CNC drilling machines; second, using portable radial drilling machines or magnetic drills for on-site processing; and third, manually marking the lines and then machining them one by one using bench drills or handheld electric drills. However, large gantry machining centers have high purchase and operating costs, and for many mold manufacturing workshops, they occupy too much space, lack flexibility, and are difficult to efficiently handle the production tasks of multiple varieties and small batches of molds. Secondly, when using portable equipment or manual drilling, the mold itself is often difficult to move or rotate due to its large size, resulting in difficulties in posture, poor positioning accuracy, high labor intensity, and safety hazards when drilling on the side or bottom. Especially for situations requiring inclined drilling on the side of the mold, existing equipment usually lacks convenient and reliable angle adjustment mechanisms, often requiring the fabrication of complex auxiliary tooling or multiple clamping operations, affecting processing efficiency and hole position accuracy. Furthermore, traditional workpiece clamping methods are cumbersome and time-consuming to operate on the mold, and may introduce errors due to uneven clamping force or inconsistent positioning references, which is not conducive to the rapid mold changeover and the consistency and repeatability of batch drilling operations.

[0004] Therefore, a new drilling equipment for manufacturing fuselage frame molds has become a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] This application provides a drilling device for manufacturing fuselage frame molds, including: The base is used to provide a basic installation platform; A portal frame is fixedly mounted across both ends of the base along the X-axis. The drilling unit is slidably mounted on the crossbeam of the portal frame via a first linear drive mechanism, so as to move along the X-axis. The drilling unit is equipped with a main spindle and a second linear drive mechanism that drives the main spindle to feed along the Z-axis. The workpiece mounting platform is set on the base and located within the working area of ​​the gantry frame; The third linear drive mechanism is connected to the workpiece mounting platform and is used to drive the workpiece mounting platform to move along the Y-axis. Several sets of lateral drilling modules are set on one side of the base, which can realize drilling operations at different angles; The controller is electrically connected to the first linear drive mechanism, the second linear drive mechanism, the third linear drive mechanism, and the drilling unit, and is used to control the movement of the equipment and the processing process.

[0006] Optionally, the drilling unit includes a sliding seat, a Z-axis servo motor, and the spindle; The sliding seat is installed at the output end of the first linear drive mechanism; A Z-axis servo motor is mounted on the sliding base, and the spindle is mounted on the output end of the Z-axis servo motor.

[0007] Optionally, the third linear drive mechanism includes a Y-axis lead screw mounted on the base and a Y-axis servo motor for driving the Y-axis lead screw to feed. One end of the Y-axis lead screw passes through the workpiece mounting platform and forms a threaded connection, while the other end is mounted on the output shaft of the Y-axis servo motor. Furthermore, the bottom of the workpiece mounting platform slides in conjunction with the Y-guide rail formed on the base.

[0008] Optionally, the first, second, and third linear drive mechanisms are all configured as lead screw structures, each including a motor, a lead screw, a lead screw nut, and a guide mechanism. The first linear drive mechanism achieves linear motion along the X-axis via an X-guide rail, the second linear drive mechanism achieves linear motion along the Y-axis via a Y-guide rail, and the third linear drive mechanism achieves linear motion along the Z-axis via the sliding of the main shaft on the sliding seat.

[0009] Optionally, the workpiece mounting platform is also equipped with a quick positioning fixture; The quick positioning fixture includes at least two T-slots on the platform surface and a T-block that can be embedded in the T-slots. The T-block is used to connect the frame mold. The workpiece mounting platform and the T-block are respectively provided with positioning pin holes, and positioning is achieved by inserting positioning pins.

[0010] Optionally, the lateral drilling module is disposed on the side of the base; The lateral drilling module includes: Columns; A hinged support is provided at the top of the column; A lateral drill shaft, one end of which is rotatably connected to the hinged support via a horizontal hinge shaft; An angle-adjusting motor has its cylinder hinged to the hinged support. The lateral drill shaft is rotatably mounted with a mounting part, which is mounted on the output shaft of the angle-adjusting motor and is used to drive the lateral drill shaft to swing in a vertical plane to adjust the drilling angle. The column lifting push rod is used to drive the column to rise and fall along its axis.

[0011] The beneficial effects of this application are as follows: 1. This application adopts a portal frame and a workpiece mounting platform that moves along the XYZ directions, simplifying the main frame of the equipment, increasing its rigidity and stability, and effectively reducing manufacturing costs and operating energy consumption. The overall structure of the equipment is compact, with a small footprint, making it suitable for deployment and application in mold manufacturing workshops of general size, thus improving space utilization. 2. This application utilizes a drilling unit positioned on a fixed gantry beam to achieve X and Y axis positioning, combined with its own Z-axis feed, forming a complete three-axis CNC drilling system. This structure avoids the inertia problems caused by moving a heavy gantry. Simultaneously, the independent Y-axis drive of the workpiece mounting platform allows for precise movement of the area of ​​the mold requiring drilling to the optimal working position of the drill bit. The coordinated operation of these two components expands the effective processing range of the equipment and enables efficient, continuous drilling operations on large-sized molds. Attached Figure Description

[0012] Figure 1 A three-dimensional structural diagram of the drilling equipment provided in this application; Figure 2 This is a side view of the drilling equipment provided in this application. Figure 3 A three-dimensional structural diagram of the work platform provided in this application; Figure 4 A side view of the work platform provided in this application; Figure 5 A schematic diagram of the left side of the work platform provided in this application; Figure 6 A three-dimensional structural diagram of the lateral drilling module provided in this application; In the diagram: 1. Base; 2. Gantry bracket; 21. X-axis guide rail; 22. X-axis servo motor; 3. Drilling unit; 31. Spindle; 32. Sliding seat; 33. Z-axis servo motor; 34. Y-axis lead screw; 35. Y-axis servo motor; 36. Y-axis guide rail; 4. Working mounting platform; 41. Positioning pin hole; 42. T-slot; 43. T-block; 5. Lateral drilling module; 51. Column; 52. Hinge support; 53. Lateral drill spindle; 54. Angle adjustment motor; 55. Column lifting push rod. Detailed Implementation

[0013] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] like Figures 1 to 6 As shown, this application provides a drilling device for manufacturing fuselage frame molds, including: Base 1 is used to provide a basic installation platform. Base 1 is the foundation of the overall equipment and can be made of high-rigidity cast iron or welded structure to provide a stable installation platform for other components.

[0015] The portal frame 2 is fixedly straddling both ends of the base 1 along the X-axis, forming an open working space; The crossbeam of the portal frame 2 is provided with an X-guide rail 21; The first linear drive mechanism is an X-axis servo motor 22 mounted on the crossbeam of the portal frame 2. The sliding seat 32 of the drilling unit 3 is slidably connected to the X-axis guide rail 21 and connected to the output end of the X-axis servo motor 22.

[0016] The drilling unit 3 is provided with a main spindle 31 and a second linear drive mechanism that drives the main spindle 31 to feed along the Z-axis. It should be noted that an X-axis guide rail 21 extending along the X-axis direction is installed on the crossbeam of the portal frame 2. The first linear drive mechanism is an X-axis servo motor 22 installed at one end of the crossbeam, the output of which can be connected to a ball screw. The sliding seat 32 of the drilling unit 3 is slidably engaged with the X-axis guide rail 21 and connected to the ball screw of the X-axis servo motor 22 through a ball screw nut pair. Thus, the operation of the X-axis servo motor 22 can drive the entire drilling unit 3 to move along the X-axis direction.

[0017] The drilling unit 3 is provided with a main spindle 31 and a second linear drive mechanism that drives the main spindle 31 to feed along the Z-axis. The drilling unit 3 includes a sliding seat 32, the second linear drive mechanism, and the main shaft 31; The sliding seat 32 is connected to the first linear drive mechanism; The second linear drive mechanism is a Z-axis servo motor 33 mounted on the sliding seat 32, and the main shaft 31 is mounted on the output end of the Z-axis servo motor 33.

[0018] The workpiece mounting platform 4 is set on the base 1 and located within the working area of ​​the gantry bracket 2; The workpiece mounting platform 4 is also equipped with a quick positioning fixture; The quick positioning fixture includes at least two T-slots 42 disposed on the platform surface and a T-block 43 that can be embedded in the T-slots 42, the T-block 43 being used to connect the fuselage frame mold; The workpiece mounting platform 4 and the T-block 43 are respectively provided with positioning pin holes 41, and positioning is achieved by inserting positioning pins.

[0019] The third linear drive mechanism is connected to the workpiece mounting platform 4 and is used to drive the workpiece mounting platform 4 to move along the Y-axis. The third linear drive mechanism includes a Y-axis lead screw 34 mounted on the base 1 and a Y-axis servo motor 35 that drives the Y-axis lead screw 34 to feed. The workpiece mounting platform 4 is fixedly connected to the output end of the Y-axis lead screw 34, and the bottom of the workpiece mounting platform 4 is slidably engaged with the Y-axis guide rail 36 opened on the base 1.

[0020] Several sets of lateral drilling modules 5 are arranged on one side of the base 1 for drilling operations with adjustable angles; It also includes at least one of the lateral drilling modules 5, which are disposed on the side of the base 1; The lateral drilling module 5 includes: Column 51; A hinged support 52 is provided at the top of the column 51; The lateral drill shaft 53 has one end rotatably connected to the hinge support 52 via a horizontal hinge shaft; An angle adjustment motor 54 has its cylinder body hinged to the hinge support 52, and its piston rod end hinged to the middle of the lateral drill shaft 53, which is used to drive the lateral drill shaft 53 to swing in the vertical plane to adjust the drilling angle. The column lifting push rod 55 is used to drive the column 51 to rise and fall along its axis.

[0021] A lateral drilling module 5 is provided on one side of the base 1. This lateral drilling module 5 is used for adjustable-angle drilling operations on the side of a workpiece. The lateral drilling module 5 includes a vertically arranged column 51. A hinged support 52 is provided at the top of the column 51. One end of the lateral drilling shaft 53 is rotatably connected to the hinged support 52 via a horizontally arranged hinge shaft, allowing the lateral drilling shaft 53 to swing up and down in a vertical plane. The cylinder end of an angle adjusting motor 54 is hinged to the hinged support 52, and the end of its piston rod is hinged to the middle of the lateral drilling shaft 53. By extending and retracting the angle adjusting motor 54, the lateral drilling shaft 53 can be precisely driven to swing around the horizontal hinge shaft in a vertical plane, thereby adjusting its drilling angle. In addition, a column lifting push rod 55 is provided to drive the entire column 51 to rise and fall along its axis to adjust the working height of the lateral drilling shaft 53.

[0022] The first, second, and third linear drive mechanisms are all configured as lead screw structures, each including a motor, a lead screw, a lead screw nut, and a guide mechanism. The first linear drive mechanism achieves linear motion along the X-axis via the X-guide rail 21, the second linear drive mechanism achieves linear motion along the Y-axis via the Y-guide rail 36, and the third linear drive mechanism achieves linear motion along the Z-axis via the sliding of the main shaft 31 on the sliding seat 32.

[0023] The controller is electrically connected to the first linear drive mechanism, the second linear drive mechanism, the third linear drive mechanism, and the drilling unit 3, and is used to control the movement of the equipment and the processing process.

[0024] The controller is electrically connected via cables to the X-axis servo motor 22, Z-axis servo motor 33, Y-axis servo motor 35, the spindle drive motor of the drilling unit 3, the angle adjustment motor 54 of the side drilling module 5, and the column lifting push rod 55. It receives feedback signals from the encoders of each motor and coordinates the movement and start / stop of each mechanism according to the preset program instructions to achieve automated processing.

[0025] It is worth noting that the working process of this application is as follows: First: The operator places the machine frame mold to be processed into the T-slot 42 of the workpiece mounting platform 4 through the T-block 43 at its bottom. After sliding it along the slot to the approximate position, the operator inserts the positioning pin into the positioning pin hole 41 to complete the precise positioning, and then uses fasteners to fix the mold.

[0026] Secondly, import or write the machining program in the controller. The program includes the location (X, Y, Z coordinates), depth, and angle information of some lateral holes for machining. Determine the origin of the workpiece coordinate system through manual or automatic tool setting.

[0027] Next: The controller initiates the program. First, for holes that need to be machined on the upper surface of the mold or in a near-vertical direction, the drilling unit 3 performs the operation. The controller coordinates the control of the X-axis servo motor 22 and the Y-axis servo motor 35, driving the drilling unit 3 to move along the Y-axis and the workpiece mounting platform 4 to move along the X-axis, positioning the spindle 31 above the X and Y coordinates of the target hole. Then, the Z-axis servo motor 33 drives the spindle 31 to descend and perform the drilling operation. After drilling is completed, the spindle is raised and moved to the next hole position, repeating this process.

[0028] Again: When the program reaches the point where a side bevel hole needs to be machined, the controller first controls the Y-axis servo motor 35 and / or the X-axis servo motor 22 to move the workpiece into the working range of the side drilling module 5, and aligns the side to be machined with the side drill spindle 53. Then, according to the angle and height set in the program, the controller controls the column lifting push rod 55 to adjust the side drill spindle 53 to a suitable height, while simultaneously controlling the angle adjustment motor 54 to drive the side drill spindle 53 to swing to the precise angle specified in the program. After the angle is locked, the side drill spindle 53 starts rotating and feeding, completing the machining of the side bevel hole.

[0029] Furthermore, throughout the entire machining process, the controller can automatically switch between steps 3 and 4 above through program logic, coordinating the working sequence and position of the front drilling unit 3 and the side drilling module 5 to avoid interference. All machining parameters, such as speed, feed, and depth, are precisely controlled by the program until all holes on the mold are machined.

[0030] Finally: After processing is complete, reset all moving parts, release the clamps, and remove the processed mold.

[0031] The above description is merely a few embodiments of this application and is not intended to limit this application in any way. Although this application discloses preferred embodiments as described above, it is not intended to limit this application. Any changes or modifications made by those skilled in the art without departing from the scope of the technical solution of this application using the disclosed technical content are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A drilling device for manufacturing fuselage frame molds, characterized in that, include; Base (1), used to provide a basic installation platform; A portal frame (2) is fixedly mounted across both ends of the base (1) along the X-axis direction; The drilling unit (3) is slidably mounted on the crossbeam of the portal frame (2) via the first linear drive mechanism to move along the X-axis direction; The drilling unit (3) is provided with a spindle (31) and a second linear drive mechanism that drives the spindle (31) to feed along the Z-axis. The workpiece mounting platform (4) is set on the base (1) and located in the working area of ​​the gantry bracket (2); The third linear drive mechanism is connected to the workpiece mounting platform (4) and is used to drive the workpiece mounting platform (4) to move along the Y-axis direction; Several sets of lateral drilling modules (5) are set on one side of the base (1) to enable drilling operations at different angles; The controller is electrically connected to the first linear drive mechanism, the second linear drive mechanism, the third linear drive mechanism and the drilling unit (3), and is used to control the movement of the equipment and the processing process.

2. The drilling equipment for manufacturing fuselage frame molds according to claim 1, characterized in that, The drilling unit (3) includes a sliding seat (32), a Z-axis servo motor (33), and the spindle (31). The sliding seat (32) is installed at the output end of the first linear drive mechanism; Z-axis servo motor (33) is mounted on the sliding seat (32), and the spindle (31) is mounted on the output end of the Z-axis servo motor (33).

3. The fuselage jig mold manufacturing drilling apparatus according to claim 2, characterized by, The third linear drive mechanism includes a Y-axis lead screw (34) mounted on the base (1) and a Y-axis servo motor (35) that drives the Y-axis lead screw (34) to feed. One end of the Y-axis lead screw (34) passes through the workpiece mounting platform (4) and forms a threaded connection, while the other end is mounted on the output shaft of the Y-axis servo motor (35). Furthermore, the bottom of the workpiece mounting platform (4) is slidably engaged with the Y-guide rail (36) opened on the base (1).

4. The fuselage jig mold manufacturing drilling apparatus according to claim 3, characterized by The first linear drive mechanism, the second linear drive mechanism and the third linear drive mechanism are all configured as lead screw structures. The lead screw structure includes a motor, a lead screw, a lead screw nut and a guide mechanism. The first linear drive mechanism forms linear motion in the X-axis through the X guide rail (21). The second linear drive mechanism achieves linear motion in the Y-axis through the Y guide rail (36). The third linear drive mechanism forms linear motion in the Z-axis through the sliding of the main shaft (31) on the sliding seat (32).

5. The drilling equipment for manufacturing fuselage frame molds according to claim 4, characterized in that, The workpiece mounting platform (4) is also equipped with a quick positioning fixture; The quick positioning fixture includes at least two T-slots (42) on the platform surface and a T-block (43) that can be embedded in the T-slots (42), the T-block (43) being used to connect the fuselage frame mold; The workpiece mounting platform (4) and the T-block (43) are respectively provided with positioning pin holes (41), and positioning is achieved by inserting positioning pins.

6. The drilling equipment for manufacturing fuselage frame molds according to claim 1, characterized in that, The lateral drilling module (5) is disposed on the side of the base (1); The lateral drilling module (5) includes: Column (51); A hinged support (52) is provided at the top of the column (51); A lateral drill shaft (53) has one end rotatably connected to the hinge support (52) via a horizontal hinge shaft; An angle adjustment motor (54) has its cylinder body hinged to the hinge support (52). The lateral drilling shaft (53) is rotatably mounted with a mounting part, which is mounted on the output shaft of the angle adjustment motor (54) to drive the lateral drilling shaft (53) to swing in the vertical plane to adjust the drilling angle. The column lifting push rod (55) is used to drive the column (51) to rise and fall along its axis.

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