High-accuracy hole forming device for aircraft wall panel and a method of high-accuracy hole forming device

Abstract

The invention provides a high-accuracy hole forming device for an aircraft wall panel and a method of the high-accuracy hole forming device. A main shaft module is used for feeding an electric main shaft along a hole forming axis; a feeding module is used for guaranteeing movement of the main shaft module and a pressure pin normal leveling module in the hole forming axis and providing pressure for a pressure pin to be abutted against the wall panel; the pressure pin normal leveling module is used for guaranteeing the stability of the wall panel in the hole forming process; the feeding module is matched with a grating scale module for work to realize accurate control over the hole forming feeding displacement; a visual alignment module and a control system form a closed loop feedback loop; positional deviation error of a projection point of a hole forming main shaft on the wall panel surface and an actual hole forming point can be measured and fed back in real time; and correction is performed through the closed loop system to guarantee that the positional accuracy of a formed hole is within a tolerance requirement range. According to the high-accuracy hole forming device, the positional accuracy, the surface roughness and the dimensional accuracy of the hole can meet the design requirements well; and meanwhile, slanting holes and oblique holes are not formed in the hole forming process, the temperature of a hole forming region is kept at a normal working temperature and the chip removal is normal.

Description

technical field [0001] The invention belongs to the field of automatic hole making of aircraft wall panels, in particular to an automatic hole making system suitable for high-precision drilling and countersinking of large aircraft wall panels. Background technique [0002] Wall panel automatic hole making technology is a technology based on product digitization and automation, and it is also one of the most advanced processing technologies in aviation manufacturing. With the help of high rigidity and pre-structure design and advanced automatic control technology, manufacturing technology can be Control machining errors within a tiny range while enabling precision manufacturing or assembly. [0003] At present, the automated hole-making system for wall panels has been gradually applied in aircraft, automobile and other manufacturing fields. Patent CN101417348A invented a drilling end effector, the end effector is driven by a motor and driven by a synchronous pulley, which ca...

AI Technical Summary

Problems solved by technology

Patent CN101417348A invented a drilling end effector, the end effector is driven by a motor and driven by a synchronous pulley, which can process laminated materials, bimetallic materials or workpieces composed of different materials by applying different cutting parameters; real-time force Feedback is used to detect the wear condition of the tool; compared with traditional hole making methods, the quality of hole making has been greatly improved; because the patent has deficiencies in the detection and compensation of the hole position and the verticality of the hole axis, it will affect the final result. Hole quality

Patent CN 102091799A invented an end effector suitable for automatic hole making on curved surfaces. The end effector can realize functions such as adjustable normal direction and accurate and controllable pressing force, which largely solves the problem of partial hole and The problem of oblique holes has greatly improved the quality of hole making; but the invention still needs to be improved in the control of hole position accuracy and the control of hole surface quality, so there is still room for further improvement in hole making quality

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