Low-temperature hole-making device and method for fiber composite material and metal laminated structure

A technology of fiber composite materials and metal lamination, which is applied in the direction of metal processing equipment, maintenance and safety accessories, metal processing machinery parts, etc., can solve the problems of low processing efficiency of devices, and achieve the improvement of hole making efficiency, increase of material brittleness, cutting tools Effect of life improvement

Active Publication Date: 2018-02-27
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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  • Low-temperature hole-making device and method for fiber composite material and metal laminated structure
  • Low-temperature hole-making device and method for fiber composite material and metal laminated structure
  • Low-temperature hole-making device and method for fiber composite material and metal laminated structure

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Embodiment Construction

[0024] refer to Figure 1-3 . The low-temperature pore-making device of the fiber composite material / metal laminated structure of the present invention includes a self-pressurized liquid nitrogen tank 1, a booster valve 2, an empty valve 3, a heat-insulating pipe 4, an electric proportional regulating valve 5, a liquid storage tank 6, a heat-insulating Device 7, temperature sensor 8 and digital display temperature controller 9. The capacity of the self-pressurized liquid nitrogen tank 1 is 50L, when the empty valve 3 on the self-pressurized liquid nitrogen tank 1 is closed, the booster valve 2 is opened, and the continuous infusion starts when the internal pressure reaches 0.05Mpa; the heat-insulated pipe 4 The inner diameter is 10mm, the outer diameter is 15mm, it is wrapped by heat insulation material, and it is 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 s...

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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 low-temperature hole-making device with a fiber composite material / metal laminate structure, and also relates to a low-temperature hole-making method based on the low-temperature hole-making device with a fiber composite material / metal laminate structure. Background technique [0002] Fiber composite / metal laminated structures are widely used in aerospace and other fields, and a large number of connecting holes need to be processed on the laminated components. Integrated drilling processing is currently a widely used processing method. However, the properties of fiber composite materials and metal alloys are quite different, resulting in the defects of interlayer delamination, exit burrs, entrance tearing, and shrinkage holes in fiber composite materials during drilling processing, and metals will produce partial tissue oxidation and exit turnover. Edges, severe tool wear, short service life and other defects. How to achieve...

Claims

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Application Information

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Patent Type & Authority Patents(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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