Four Typical Chips Produced during Dongguan Turning and Milling Compound Processing
author: Hansheng Automation
2023-05-17
During Dongguan turn-milling composite machining, due to different workpiece materials, the degree of deformation during the cutting process also varies, resulting in a variety of cutting types that can be divided into the following four types;
1. Strip cutting. When processing plastic metal materials, such chips are usually obtained when the cutting thickness is small, the cutting speed is high, and the tool rake angle is large. Its cutting process is smooth, the fluctuation of cutting force is small, and the roughness value of the processed surface is small.
2. Squeezing chips. This type of chip differs from ribbon chips in that its surface is serrated and there are occasional cracks on the inner surface. This type of chip is mostly generated when the cutting speed is low, the cutting thickness is large, and the tool rake angle is small.
3. Unit chip. If the column extends to the entire surface on the shear surface of the extrusion cutting, the entire unit is cut off and becomes a trapezoidal unit chip.
4. Crushing cutting. The shape of this chip is irregular, and the machined surface is uneven. From the perspective of cutting process, the deformation of chips before fracture is small, and the formation mechanism of chips in plastic materials is also different. Its brittle fracture is mainly due to the stress on the material exceeding its tensile limit.
The above are four typical types of chips, and the shapes of chips obtained at the Dongguan turning and milling composite processing site are diverse. In modern machining, the cutting speed and metal removal rate have reached a very high level, and the cutting conditions are also very poor, often producing a large number of "unacceptable" chips.
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