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Cutting machining device and method for CFRP special-shaped holes

A technology of cutting and special-shaped holes, which is applied in the field of mechanical cutting, can solve the problems of unsuitable preparation of CFRP special-shaped holes, triangular burrs, tearing and delamination damage, etc., and achieves strong implementability and good hole wall quality , high precision effect

Inactive Publication Date: 2018-12-14
SUZHOU DINGYU ENERGY EFFICIENT EQUIP +1
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AI Technical Summary

Problems solved by technology

[0004] However, all the above-mentioned patents are mainly aimed at CFRP round holes, and cannot solve the burrs, tears and delamination damage at the corners of triangular, rectangular, trapezoidal, and regular polygonal shaped holes. Therefore, they are not suitable for preparing CFRP shaped holes

Method used

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  • Cutting machining device and method for CFRP special-shaped holes
  • Cutting machining device and method for CFRP special-shaped holes
  • Cutting machining device and method for CFRP special-shaped holes

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Embodiment Construction

[0030] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0031] The brand for the fuselage of the C919 large passenger aircraft independently developed and produced by COMAC is T700 / LT-03A, and the carbon fiber direction [0 / + / 90 / - / 0 / 0 / + / 90 / - / 0 / 0 / - / 90 / + / 0 / 0 / - / 90 / + / 0]s Lay 40 layers of 5mm thick CFRP laminates, apply the method of the present invention, prepare large-diameter circular, triangular, rectangular and trapezoidal special-shaped holes, such as Figure 1 to Figure 5 As shown, a CFRP special-shaped hole 13 cutting processing device of the present invention includes a clamp body 7, the top of the clamp body 7 is provided with a processing groove 71 downward, and both ends of the clamp body 7 are provided with stepped surfaces 72, the top surface of the step surface 72 is provided with a pressing ...

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Abstract

The invention discloses a cutting machining device for CFRP special-shaped holes. The cutting machining device comprises a clamp body. A machining groove is downwards formed in the top of the clamp body. Step faces are arranged at the two ends of the clamp body. Pressure plates are arranged on the top faces of the step faces. A CFRP laminated plate is arranged in the machining groove. The two endsof the CFRP laminated plate are fixed through the pressing plates. A machine tool spindle is arranged on the top of the clamp body, an inverted-Y-shaped pattern milling cutter is perpendicularly arranged at the lower portion of the machine tool spindle, and a diamond pattern milling cutter is arranged on one side of the machine tool spindle. By means of a cutting machining method for the CFRP special-shaped holes, the CFRP laminated plate is clamped on the clamp body, the geometric center is determined and a center hole is drilled in advance according to the shape features of the special-shaped holes, the inverted-Y-shaped pattern milling cutter is used for milling inner cavities of the special-shaped holes in a homocentric square shape, then the diamond pattern milling cutter is used forconducting finish milling on the special-shaped holes, triangular, rectangular, trapezoidal and regular polygonal special-shaped holes can be effectively manufactured, burr and lamination effects areavoided, the hole wall quality is good, precision is high, operation is simple, and feasibility is high.

Description

technical field [0001] The invention relates to the technical field of mechanical cutting processing, in particular to a CFRP special-shaped hole cutting processing device and processing method. Background technique [0002] In recent years, Carbon Fiber Reinforced Polymer (CFRP) is the preferred material for new aviation large aircraft, energy fans and corrosion-resistant blowers in the petrochemical industry due to its light weight, high specific strength, high specific height, and corrosion resistance. . In order to meet the high-reliability connection and assembly requirements of CFRP and titanium alloys and aluminum alloys, it is often necessary to prepare special-shaped holes. However, CFRP is a typical difficult-to-machine material. There are serious burrs, tears, and delamination damage at the entrance, exit, and corner of special-shaped holes, resulting in low connection strength and unable to meet the load-bearing requirements. Therefore, how to prepare CFRP shap...

Claims

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Application Information

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IPC IPC(8): B23C3/00B23P15/00
CPCB23C3/00B23P15/00
Inventor 王呈栋林耀朋姜国盛王斌唐陈
Owner SUZHOU DINGYU ENERGY EFFICIENT EQUIP
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