Experimental device for laminated structure drilling

Abstract

The invention belongs to the technical field of laminated material cutting device research, and provides an experimental device for laminated structure drilling. According to the experimental device,a high-speed microscopic observation system is mounted to achieve synchronous real-time recording of the action process of a cutting edge and a material and the forming process of an interlayer gap inthe high-speed drilling process, and the specific size of the interlayer gap is obtained by analyzing picture records; a cutting force online measuring system is used for achieving dynamic monitoringof cutting force in the forming process of deformation, cutting damage and the like; and a follow-up recycling device is additionally arranged to achieve effective recycling of cuttings, dust and thelike, and green machining is achieved. According to the experimental device, the relation between the interlayer layering process and the cutter vector machining process in the laminated material drilling process is solved, microscopic recording of the high-speed cutting process of the material at the interlayer heterogeneous interface is achieved, and therefore a damage generation mechanism is analyzed, guidance is provided for cutter design and process formulation, and experimental support is provided for cutting theory explanation of the heterogeneous interface of a laminated structure.

Description

technical field [0001] The invention belongs to the technical field of research on cutting devices for laminated materials, and relates to an experimental device for drilling research on laminated structures. Background technique [0002] Due to the complementary properties of the two materials, the laminated structure can avoid the disadvantages of a single material and combine the advantages at the same time, so it has been widely used. Especially in the field of aerospace, carbon fiber reinforced composite materials (CFRP) are often used together with metals, such as aluminum, titanium, etc. to form laminated structures. In order to realize the assembly connection, making holes in the laminated structure is a crucial and most arduous process in the manufacturing process of structural parts. At present, using one tool at the assembly station to complete the final hole machining at one time has become the main processing method to improve production efficiency and processi...

AI Technical Summary

Problems solved by technology

However, the existing test device only realizes the measurement of the interlayer gap and the suppression by the preload force, and it is still blank for the change of the cutting behavior of the cutting edge at the heterogeneous interface, and cannot fundamentally provide a method for interlayer damage suppression.

Therefore, it is necessary to monitor the cutting behavior at the interface, the change of cutting parameters, and the deflection and deformation of the upper and lower plates in real time, so as to clarify the cause of interlayer damage, the expansion form, and the mapping relationship with the cutting state during the machining process, and then guide the formulation of machining strategies and blade shape design to achieve the goal of low-damage processing. At present, there is no experimental device to monitor the above parameters in real time at the same time.

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