Spinning milling drilling process for carbon fiber composites

A composite material and gyro-type technology, which is applied to milling machine equipment, manufacturing tools, milling machine equipment details, etc., can solve problems such as service performance impact and delamination, and achieve the improvement of inner surface quality, reduction of burrs, and reduction of exit delamination. Effect

Inactive Publication Date: 2016-01-27
NANCHANG HANGKONG UNIVERSITY
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Problems solved by technology

However, when carbon fiber composite materials are drilled, they are prone to delamin

Method used

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  • Spinning milling drilling process for carbon fiber composites
  • Spinning milling drilling process for carbon fiber composites
  • Spinning milling drilling process for carbon fiber composites

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[0012] The present invention proposes to use the "gyro-type" milling and drilling method to drill carbon fiber composite materials, and the "gyro-type" milling and drilling processing principle is as follows: figure 1 shown. While the milling cutter rotates around the rotation axis, it also revolves around the revolution axis, that is, it performs "gyroscopic" motion. The axis of rotation forms an angle with the axis of co-rotation , the included angle It can be adjusted according to the shape of the processed hole. While the milling cutter is performing "gyroscopic" movement, it is fed along the revolution axis towards the surface of the workpiece, so that the "hole" is processed by milling. The biggest advantage of this movement method is that it can greatly reduce the tension on the carbon fiber workpiece at the exit of the "hole", thereby reducing the exit delamination. At the same time, the use of milling instead of traditional drilling can improve the quality of th...

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Abstract

The invention relates to a spinning milling drilling process for carbon fiber composites. The invention provides a special mode of motion of a cutter, namely a spinning motion; a milling cutter revolves around a revolution axis while rotating around an own axis. An included angle theta is formed between the rotation axis and the revolution axis; the included angle theta can be adjusted according to a shape of a hole to be machined. The milling cutter is fed toward a surface of a workpiece along the revolution axis at the same time of the spinning motion, and therefore, a hole is machined out in the milling manner. Such a mode of motion has the greatest advantage that a pull to a carbon fiber workpiece at the outlet of the hole can be greatly reduced so that an outlet-layering phenomenon can be reduced.

Description

technical field [0001] The invention is applied to the field of drilling of carbon fiber composite materials, and in particular relates to a "gyro-type" milling and drilling process of carbon fiber composite materials. Background technique [0002] Carbon fiber composite materials have the advantages of light weight, high strength, and corrosion resistance, and are widely used in the aircraft manufacturing industry. However, when carbon fiber composite materials are drilled, they are prone to delamination at the exit of the hole, which has a great impact on their service performance. Therefore, solving the delamination phenomenon when drilling carbon fiber composite materials has become an urgent problem in the aircraft manufacturing industry. [0003] At present, the methods to solve such problems mainly include: the use of diamond tools "grinding instead of drilling" technology, "helical milling hole" technology, etc. In the "grinding instead of drilling" process of diam...

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Application Information

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IPC IPC(8): B23C3/00B23C9/00B23Q5/32
CPCB23C3/00B23C9/00B23Q5/32
Inventor 高延峰宋文庆路冬万文柴京富
Owner NANCHANG HANGKONG UNIVERSITY
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