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Fiber composite material/metal laminated structure low-temperature hole production device and method

A fiber composite material, metal lamination technology, used in boring/drilling, metal processing equipment, maintenance and safety accessories, etc. The effect of increased material brittleness

Active Publication Date: 2017-03-08
NORTHWESTERN POLYTECHNICAL UNIV
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AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of the existing carbon fiber composite material and metal material laminated assembly hole-making method and device with low processing efficiency, the present invention provides a low-temperature hole-making device and method for fiber composite material / metal laminated structure

Method used

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  • Fiber composite material/metal laminated structure low-temperature hole production device and method

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Embodiment Construction

[0024] Reference Figure 1-3 . The fiber composite material / metal laminated structure low-temperature hole making device of the present invention includes a self-pressurized liquid nitrogen tank 1, a booster valve 2, an air valve 3, a heat insulation pipe 4, an electric proportional regulating valve 5, a liquid storage tank 6, and a heat insulation Device 7, temperature sensor 8 and digital display temperature controller 9. The self-pressurized liquid nitrogen tank 1 has a capacity of 50L. When the empty valve 3 on the self-pressurized liquid nitrogen tank 1 is closed, the booster valve 2 is opened, and the internal pressure reaches 0.05Mpa to start continuous infusion; heat insulation pipe 4 The inner diameter is 10mm and the outer diameter is 15mm. It is wrapped by insulation material and used for the transportation of low-temperature medium; the liquid storage tank 6 has a capacity of 5L and is used to store the liquid nitrogen transported by the self-pressurized liquid nit...

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Abstract

The invention discloses a fiber composite material / metal laminated structure low-temperature hole production device and a method for solving the technical problem of low machining efficiency in traditional carbon fiber composite material and metal material laminated assembly hole production method and device. Under constant feeding speed and main shaft rotating speed, liquid nitrogen is used as a cooling medium; the generation quantity of low-temperature gas is controlled through controlling the volatilizing quantity of the liquid nitrogen; and the closed-loop control is performed for the temperature of a machining area to realize adjustment and constant keeping of the temperature of the machining area along with workpiece materials, so that the hole production defects caused by different material properties are reduced, and the machining efficiency is improved when realizing high-quality hole production of a fiber composite material / metal laminated structure.

Description

Technical field [0001] The invention relates to a fiber composite material / metal laminated structure low-temperature hole making device, and also relates to a low-temperature hole making method based on the fiber composite material / metal laminated structure low temperature hole making device. Background technique [0002] Fiber composite materials / metal laminated structures are widely used in aerospace and other fields, and a large number of connecting holes need to be processed on laminated components. Integrated drilling is currently a widely used processing method. However, the properties of fiber composite materials and metal alloys are quite different, leading to defects such as layer delamination, exit burrs, entrance tears, and shrinkage holes in fiber composite materials during drilling. The metal will cause partial oxidation of the structure and exit turnover. Edges cause serious tool wear and short service life. How to achieve high-efficiency and high-quality processin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B41/00B23Q11/10
CPCB23B41/00B23B2226/27B23Q11/10
Inventor 刘书暖刘永强张开富叶忠义
Owner NORTHWESTERN POLYTECHNICAL UNIV
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