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How to machine carbon fiber products?

Published:

Jan 10,2022

Carbon fiber materials have the advantage of being light and thin compared to other materials, and can be used to produce products with various complex shapes without special processing. Carbon fiber products are laminated and hot-pressed with carbon fiber prepregs. After molding, they have high hardness and brittleness, which requires attention during later machining to prevent delamination and tearing During the machining of carbon fiber products, delamination and tearing are prone to occur, which can lead to a decline in the performance of carbon fiber products. Due to the relatively high strength of carbon fiber products, the cutting force is also higher, especially when processing carbon fiber products with relatively thick wall thickness. At this time, there will be a lot of heat around the hole, so it is recommended to choose a hard alloy or diamond bit during machining. The traditional Fried Dough Twists bit is easy to cause debris accumulation. It is recommended to choose a drill with a central through hole and a row groove on the end face, which is conducive to the discharge of debris. When drilling carbon fiber products, the shear stress of the cutter head along the linear velocity direction causes the surface layer of the carbon fiber material to form a tearing delamination force without binding. However, as the drill bit gradually deepens, the drill bit will generate a certain taper, and then there is a force perpendicular to the surface of the carbon fiber product that can resist the tearing delamination force, which can ensure the overall mechanical properties of the carbon fiber product. When drilling into the fiber layer at the bottom of Z, the bearing capacity of the bottom is relatively low, and wrinkles and burrs are prone to occur under axial action. Therefore, during the correction process, it is necessary to make the drill bit have a polishing effect to ensure that the accuracy requirements of the hole meet the actual requirements.

Carbon fiber materials have the advantage of being light and thin compared to other materials, and can be used to produce products with various complex shapes without special processing. Carbon fiber products are laminated and hot-pressed with carbon fiber prepregs. After molding, they have high hardness and brittleness, which requires attention during later machining to prevent delamination and tearing
During the machining of carbon fiber products, delamination and tearing are prone to occur, which can lead to a decline in the performance of carbon fiber products. Due to the relatively high strength of carbon fiber products, the cutting force is also higher, especially when processing carbon fiber products with relatively thick wall thickness. At this time, there will be a lot of heat around the hole, so it is recommended to choose a hard alloy or diamond bit during machining. The traditional Fried Dough Twists bit is easy to cause debris accumulation. It is recommended to choose a drill with a central through hole and a row groove on the end face, which is conducive to the discharge of debris.
When drilling carbon fiber products, the shear stress of the cutter head along the linear velocity direction causes the surface layer of the carbon fiber material to form a tearing delamination force without binding. However, as the drill bit gradually deepens, the drill bit will generate a certain taper, and then there is a force perpendicular to the surface of the carbon fiber product that can resist the tearing delamination force, which can ensure the overall mechanical properties of the carbon fiber product.
When drilling into the fiber layer at the bottom of Z, the bearing capacity of the bottom is relatively low, and wrinkles and burrs are prone to occur under axial action. Therefore, during the correction process, it is necessary to make the drill bit have a polishing effect to ensure that the accuracy requirements of the hole meet the actual requirements.