Pulse current pretreatment based titanium nail riveting forming method and device
A technology of pulse current and pulse power supply, which is applied in the field of titanium nail riveting forming methods and devices, can solve the problems of titanium nails being easily broken and deformed, uneven, and excessive riveting force, and achieve reduced connection damage, high productivity, and reduced riveting forming force effect
Active Publication Date: 2019-07-05
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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[0004] The purpose of the present invention is to provide a titanium nail riveting forming method and device based on pulse current pretreatment, which can effectively solve the problems of excessive riveting force, easy cracking of titanium nails and uneven deformation in the background technology
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[0030] In order to make the objects and advantages of the present invention clearer, the present invention will be specifically described below in conjunction with examples. It should be understood that the following words are only used to describe one or several specific implementation modes of the present invention, and do not strictly limit the protection scope of the specific claims of the present invention.
[0031] The technical scheme that the present invention takes is as Figure 2-5 As shown, a titanium nail riveting forming device based on pulse current pretreatment includes an automatic riveting machine (for the existing riveting machine structure), and the automatic riveting machine includes an upper punch 11 and a lower punch 12, The upper punch 11 and the lower punch 12 are respectively arranged on the riveting base 1, and also include an electrode sheet, an electrode insulation module and a fixed pre-compression structure, and the electrode sheet and the pulse p...
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Abstract
The invention relates to a pulse current pretreatment based titanium nail riveting forming method. The method comprises the steps of mounting electrode insulation modules to an upper punch and a lowerpunch of an automatic rivet pressing machine; clamping a plate to be connected to the automatic rivet pressing machine, and positioning a titanium nail in the plate to be connected; inserting a lowerelectrode sheet and an upper electrode sheet which are connected to a pulse power supply; starting the pulse power supply to apply pulse current to the titanium nail; switching off the pulse power supply; removing the upper electrode sheet and the lower electrode sheet; riveting the titanium nail to finish the riveting of the plate to be connected; correspondingly upwards and downwards removing an upper riveting base and a lower riveting base; releasing an assembling clamp of the connecting plate; and removing a titanium alloy riveting part. The invention also provides a device adopted in theabovementioned method. The device comprises the automatic rivet pressing machine, the electrode sheets, the electrode insulation modules and fixing and pre-compressing structures, wherein the electrode sheets are connected to the pulse power supply. According to the abovementioned technical scheme, the method and the device effectively solve the problems of excessively high riveting force, easy breaking of the titanium nails and non-uniform deformation in the background technology.
Description
technical field [0001] The invention relates to the technical field of aircraft assembly, in particular to a titanium nail riveting forming method and device based on pulse current pretreatment. Background technique [0002] With the continuous growth and development of the aviation industry, the aircraft gradually expands the application of the overall structure, titanium alloy structure and composite material structure, and the requirements for the variety and quality of riveted joints are greatly improved. In order to meet some special requirements for riveted parts, domestic and foreign developed Some special rivets, such as ring groove rivets, blind rivets, threaded hollow rivets, high shear rivets, titanium nails and other riveting process equipment. Among them, titanium nail riveting has attracted much attention because it can effectively suppress the potential corrosion of the connection structure and improve the service life. Titanium alloys have gradually become th...
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IPC IPC(8): B21J15/02B21J15/14B21J15/38
CPCB21J15/02B21J15/142B21J15/38
Inventor 齐振超肖叶鑫王星星姚晨熙黄正强陈文亮杨景岚李丰辰朱苏纬王威徐庆贺王慧黄灿
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS