Micro-drilling device for carbon fiber skin plate

Abstract

The invention discloses a micro-drilling device for a carbon fiber skin plate, which comprises a main body base, a six-axis degree-of-freedom robot, a multi-spindle drilling actuator, a dust removal device and a control system, the main body base is provided with the six-axis degree-of-freedom robot, and the multi-spindle drilling actuator is driven by the six-axis degree-of-freedom robot; and under the control of the control system, the carbon fiber skin plate material is drilled. According to the micro-drilling device for the carbon fiber skin plate, high-precision drilling of the carbon fiber skin plate is achieved, it is guaranteed that the peripheries of holes are free of burrs and cracks, the non-drilling area of the surface of a part is free of surface damage such as scratches, the problem of carbon fiber material carbonization caused by high temperature is avoided, and the material performance and the hole quality are guaranteed; 35 holes can be formed at the same time per second, accurate regulation and control of each drill bit and the motion trail of the robot are achieved, the quality stability of formed holes is ensured, the hole forming efficiency is greatly improved, and the requirement for large-scale production is met.

Description

Technical Field

[0001] This invention relates to the field of aircraft parts processing, specifically a micro-hole drilling device for carbon fiber skin panels, particularly a micro-hole drilling device for carbon fiber skin panels with curved surfaces around aircraft engines. Background Technology

[0002] The carbon fiber skin panel around the aircraft engine (with a honeycomb sandwich material inside) is curved and requires holes to be drilled perpendicularly along the normal direction.

[0003] Existing carbon fiber skin panel drilling devices are usually single-axis drills that use standard machining methods, which often lead to delamination, burrs, fiber tearing, and even damage to the internal honeycomb interlayer of the carbon fiber skin panel. The drilling accuracy is low and the processing efficiency is low. Alternatively, laser drilling methods are used, which generate high temperatures at the contact surface, causing resin carbonization and clogging of the hole edges, thus destroying the integrity of the carbon fiber skin panel. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a micro-hole-making device for carbon fiber skin panels, which can effectively solve problems such as delamination, burrs, and fiber tearing caused by ordinary machining methods, as well as carbonization and edge smudging caused by laser hole making, and ensure that the internal honeycomb interlayer is not damaged during hole making.

[0005] The technical solution adopted by the present invention to solve its technical problem is as follows: The micro-hole making device for carbon fiber skin panels of the present invention includes a main base, a six-axis robot, a multi-spindle hole making actuator, a dust removal device, and a control system; the six-axis robot is arranged on the main base; the multi-spindle hole making actuator is driven by the six-axis robot and performs hole making on the carbon fiber skin panel material under the control of the control system; the dust removal device is connected to the multi-spindle hole making actuator.

[0006] Preferably, the multi-spindle hole-making actuator includes electrical components for controlling spindle operation, a spindle mounting component, a spindle, a transparent plate, a dust collection hood, an electrostatic brush, and a flexible hose; the transparent plate is disposed on the end face of the multi-spindle hole-making actuator, the electrical components for controlling spindle operation are installed inside the multi-spindle hole-making actuator, the spindle is installed inside the spindle mounting component, the dust collection hood is disposed at the bottom of the multi-spindle hole-making actuator, the electrostatic brush is disposed around the multi-spindle hole-making actuator, and the flexible hose is disposed on both sides of the multi-spindle hole-making actuator and connected to a dust removal device.

[0007] Preferably, multiple spindles can be installed in the spindle mounting component, and more preferably 35 spindles can be installed.

[0008] Preferably, the spindle is a high-speed spindle, and more preferably a spindle with a speed of 50,000 to 80,000 revolutions per minute.

[0009] Preferably, each set of spindles is equipped with a running indicator light.

[0010] Preferably, each set of spindles is equipped with a pressure sensor.

[0011] Preferably, each spindle is equipped with a replaceable drill bit, more preferably a 0.5-2mm drill bit.

[0012] Preferably, the movement of each set of main shafts is controlled by a control telescopic mechanism and an auxiliary telescopic mechanism.

[0013] Preferably, the control system includes a PLC control unit and a robot control unit; more preferably, the control system also includes a human-machine interface.

[0014] The beneficial effects of the micro-hole-making device for carbon fiber skin panels of the present invention are as follows: It effectively solves the defects existing in the prior art. By cooperating with a six-axis robot and a multi-spindle hole-making actuator, it ensures that the hole axis is perpendicular to the normal, and the hole diameter and hole spacing are processed with high precision, thus achieving high-precision hole making for carbon fiber skin panels. By introducing a pressure sensor, it avoids damage to the internal honeycomb interlayer of the carbon fiber skin panel due to excessive pressure, while ensuring that there are no burrs or splits around the holes and no scratches or other surface damage on the non-drilled areas of the part surface, thus improving the smoothness and aesthetics of the holes. The non-laser drilling method avoids the carbonization problem of carbon fiber materials caused by high temperature, ensuring material performance and hole quality. It can make 35 holes per second simultaneously, greatly improving the hole-making efficiency and meeting the needs of large-scale production. By introducing an advanced control system, it achieves precise control of key parameters such as the start and stop of each drill bit, travel distance, speed, and robot motion trajectory, thereby ensuring the stability and high quality of the hole-making process. In addition, the device is highly flexible and adaptable, capable of drilling holes in carbon fiber skin plates of different shapes, such as flat, curved, and ring-shaped surfaces. The hole diameter can also be adjusted according to specific requirements, further expanding the range of applications. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the micro-perforation device for carbon fiber skin plates of the present invention.

[0016] Figure 2 This is a schematic diagram of the overall structure of the multi-spindle hole-making actuator of the present invention.

[0017] Figure 3 This is a cross-sectional view of the multi-spindle hole-making actuator of the present invention.

[0018] In the diagram: 1. Main base; 2. Six-axis robot; 3. Multi-spindle hole-making actuator; 4. Dust removal device; 5. Control system; 6. Electrical components for controlling spindle operation; 7. Spindle mounting component; 8. Spindle; 9. Transparent plate; 10. Dust collection hood; 11. Electrostatic brush; 12. Flexible hose; 13. Replaceable drill bit; 14. Control telescopic mechanism; 15. Auxiliary telescopic mechanism. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solution of the present invention more clearly.

[0020] like Figure 1 , Figure 2 , Figure 3 As shown, a micro-hole-making device for carbon fiber skin panels includes a main base 1, a six-axis robot 2, a multi-spindle hole-making actuator 3, a dust removal device 4, and a control system 5. The six-axis robot 2 is mounted on the main base 1. The multi-spindle hole-making actuator 3 is driven by the six-axis robot 2 and performs hole-making on the carbon fiber skin panel material under the control of the control system 5. The dust removal device 4 is connected to the multi-spindle hole-making actuator 3.

[0021] The six-axis robot 2 uses the KUKA R210 R3100 robot, with a maximum motion range of 3100mm, a rated load of 210kg, a maximum load capacity of 281kg, a position repeatability of ±0.05mm, a footprint of 754mm×754mm, and a weight of approximately 1134kg.

[0022] The multi-spindle hole-making actuator 3 includes an electrical component 6 for controlling spindle operation, a spindle mounting component 7, a spindle 8, a transparent plate 9, a dust collection hood 10, an electrostatic brush 11, and a flexible hose 12. The transparent plate 9 is located on the end face of the multi-spindle hole-making actuator 3 and is made of high-strength acrylic material, allowing real-time observation of the status of each spindle's operating indicator light. The electrical component 6 for controlling spindle operation is installed inside the multi-spindle hole-making actuator 3, and the spindle 8 is installed inside the spindle mounting component 7. The dust collection hood 10 is located at the bottom of the multi-spindle hole-making actuator 3, the electrostatic brush 11 is located around the multi-spindle hole-making actuator 3, and the flexible hose 12 is located on both sides of the multi-spindle hole-making actuator 3 and connected to the dust removal device 4 to ensure dust removal after hole making.

[0023] The multi-spindle hole-making actuator 3, through optimization, can install 35 sets of spindles 8, achieving 35 holes per second with a hole spacing accuracy of ±0.4mm; each set of spindles 8 rotates at 80,000 revolutions per minute and is equipped with a running indicator light and a pressure sensor to ensure that it penetrates the skin plate without damaging the internal honeycomb interlayer; the spindles 8 use 0.5-2mm replaceable drill bits 13 with a hole diameter accuracy of ±0.2mm; the movement of the spindles 8 is controlled by the control telescopic mechanism 14 and the auxiliary telescopic mechanism 15, and the depth of penetration into the honeycomb is ≤1mm.

[0024] The control system 5 can be used to program hole-making, simulate the hole-making process, and monitor the operation of each actuator in real time during the hole-making process. The control system 5 includes a PLC control unit, a robot control unit, and more preferably a human-machine interface. The PLC control unit is responsible for the motion control of each actuator, such as starting and stopping the multi-spindle hole-making actuator 3 and switching the dust removal device 4 on and off, ensuring coordinated operation of all parts; the robot control unit is responsible for the motion trajectory planning and control of the six-axis robot 2, achieving precise positioning and efficient hole-making; the human-machine interface provides a user-friendly interface, allowing users to complete operations such as program programming, parameter setting, and status monitoring, facilitating operation and management.

[0025] The above are merely preferred embodiments of the present invention. For those skilled in the art, several improvements can be made without departing from the principle of the present invention, and these improvements should also be considered within the scope of protection of the present invention.

Claims

1. A micro-perforation device for carbon fiber skin panels, characterized in that: The system includes a main base, a six-axis robot, a multi-spindle hole-making actuator, a dust removal device, and a control system. The six-axis robot is mounted on the main base. The multi-spindle hole-making actuator is driven by the six-axis robot and performs hole-making on the carbon fiber skin material under the control of the control system. The dust removal device is connected to the multi-spindle hole-making actuator.

2. The micro-perforation device for carbon fiber skin plates according to claim 1, characterized in that: The multi-spindle hole-making actuator includes electrical components for controlling spindle operation, a spindle mounting component, a spindle, a transparent plate, a dust collection hood, an electrostatic brush, and a flexible hose. The transparent plate is disposed on the end face of the multi-spindle hole-making actuator. The electrical components for controlling spindle operation are installed inside the multi-spindle hole-making actuator. The spindle is installed inside the spindle mounting component. The dust collection hood is disposed at the bottom of the multi-spindle hole-making actuator. The electrostatic brush is disposed around the multi-spindle hole-making actuator. The flexible hose is disposed on both sides of the multi-spindle hole-making actuator and connected to a dust removal device.

3. The micro-perforation device for carbon fiber skin plates according to claim 2, characterized in that: The spindles are in groups 1-35.

4. The micro-perforation device for carbon fiber skin plates according to claim 2, characterized in that: The spindle speed of each group is 50,000 to 80,000 revolutions per minute.

5. The micro-perforation device for carbon fiber skin plates according to claim 2, characterized in that: Each spindle is equipped with a running indicator light.

6. The micro-perforation device for carbon fiber skin plates according to claim 2, characterized in that: Each spindle is equipped with a pressure sensor.

7. The micro-perforation device for carbon fiber skin plates according to claim 2, characterized in that: Each spindle is equipped with replaceable drill bits, with a drill bit size of 0.5-2mm.

8. The micro-perforation device for carbon fiber skin plates according to claim 2, characterized in that: The movement of each main shaft is controlled by a control telescopic mechanism and an auxiliary telescopic mechanism.

9. The micro-perforation device for carbon fiber skin plates according to claims 1-8, characterized in that: The control system includes a PLC control unit, a robot control unit, and a human-machine interface.

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