Self-adaptive drilling device and method for composite material/metal material laminated structure

Abstract

The invention discloses a self-adaptive drilling device and method for a composite material / metal material laminated structure. The drilling device comprises a machine tool; a tool handle is fixedly installed on the machine tool; a drill bit is clamped on the tool handle; the drill bit is used for drilling other materials, composite materials and metal materials; the metal materials are connectedwith a resistance detection device through a wire; the machine tool, the tool handle, the drill bit, the other materials, the composite materials, the metal materials and the resistance detection device are connected through conductive wires to form a resistance measurement loop. By means of the drilling method, the interface of the composite material / metal material laminated structure is recognized, when the drill bit enters the metal material, technological parameters are adjusted and optimized, and the drilling quality and efficiency of the laminated structure are improved. According to thedevice and the method, the recognition process is simplified, and the problem of breakage of the drill tip due to the fact that machining parameters are not changed in time and the drill bit drills the metal materials at the high rotating speed is solved.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing and manufacturing, and in particular relates to a self-adaptive drilling device and a method thereof for a composite material / metal material laminated structure. Background technique [0002] Composite materials have many excellent properties, such as high specific strength and specific stiffness, high corrosion resistance, low expansion coefficient, etc. At present, the amount of composite materials has become an important symbol of the advancement of aircraft and even the advancement of aerospace. In aircraft manufacturing, composite materials are often used together with metallic materials (such as titanium alloys, aluminum alloys, stainless steel) to achieve lighter overall structural weight, better structural strength and fuel economy. [0003] Bolt connection and riveting are the most commonly used parts connection methods in aircraft assembly, and this mechanical connection m...

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Problems solved by technology

[0005] Purpose of the invention: The purpose of the present invention is to provide a composite material / metal material laminated structure self-adaptive drilling device and its method, which solves the problem that the drilling parameters of the drill bit have not changed in the existing laminated structure drilling, causing the drill bit to operate at a high speed. The problem of drill tip chipping caused by down drilling of metal materials

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