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CNC Main Machining Objects

March 28, 2024

Milling is one of the most commonly used machining methods in machining. It is mainly used for face milling and contour milling, as well as drilling, extending, reaming, boring and tapping of parts. Parts suitable for CNC include:

(1) Plane parts
Plane parts are characterised by the fact that each machined surface can be flat or planar. Currently, most parts machined on CNC milling machines are planar parts. Spread flat parts are the simplest class of CNC machining objects and can usually be machined by two-axis linkage machining (i.e., two-axis half-coordinate machining) on a three-axis CNC milling machine.

Plane parts with plane contour plane parts with oblique plane parts with positive plane parts and ribbed plane parts.

(2)Variable inclined parts
Parts with a constantly changing angle between the machining surface and the horizontal plane are called variable angle parts. When machining variable angle parts, it is best to use a 4-axis or 5-axis CNC milling machine for angle machining. If such a machine is not available, 2-axis semi-control line machining can produce an approximation on a 3-axis CNC milling machine, but with slightly lower accuracy.

(3) Surface (3D) parts
Parts whose machining surface is a spatial surface are called curved parts. The machining surface of the curved part and the milling cutter are always in point contact. Usually processed by 3-axis CNC milling machine, there are two commonly used processing methods:
Machining is done by 2-axis semi-linked line cutting method. The tangent line method is to connect only two coordinates during the machining process, and the other coordinates are periodic with a certain line spacing. This method is usually used to process less complex spatial surfaces.
Three-axis simultaneous machining. The milling machine used must have X, Y, and z axis linked machining to perform spatial linear interpolation. This method is usually used for more complex spatial surfaces such as engines or moulds.

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