Abstract
In the case of the orthogonal cutting of plastics, effect of the cutting condition on the chip form and cutting resistance are shown as follow:
1. The chip form of Acrylic resin and Epoxy resin changes from the flow-type to the, crack-type, depending on cutting angle (θ), depth of cut (d), cutting speed (V).
2. The cutting resistance of Acrylic resin and nylon is almost constant under the following cutting condition: V; 480m/min, θ; 70 degree, d 0.02mm0.07mm.
3. In the crack-type chip, the cutting resistance decreases.
4. When Acrylic resin is cut at the speed of over 112m/min, crack-type chip is formed -under the condition of 20 degree rake angle and 0.07mm depth of cut.
5. The chips of Acrylic resin and nylon are always the flow-type form when the cutting angle is over 90 degree.
