During rice processing, the over milling process cause a lot of loss of rice grains, the research on the proper processing method of rice is crucially important. In order to study the tribological characteristics of brown rice under friction during rice milling, based on the principle of moderate processing, three kinds of brown rice were used as the research object, and the in-situ observation combined friction and wear tester was used to analyze the friction process of brown rice grains under load, rotate speed, rice temperature, humidity, an...