钻头的工作过程

挖坑作业时，钻头随立轴旋转，同时作轴向移动。土壤在钻头的扭矩和轴向力作用下被切削，在工作叶片的挤压和离心力作用下被松碎，形成土流压向坑壁，同时沿页面升运到地表。当土流运动到无坑壁阻挡处时，由于离心力作用碎土被抛到坑的周围，完成挖坑过程。
During the excavation operation, the bit rotates along the vertical axis and moves axially at the same time. The soil is cut under the action of the torque and axial force of the drill bit, and is loosened under the action of the compression and centrifugal force of the working blade, forming the soil flow pressure to the pit wall, and at the same time, it rises and transports to the surface along the page. When the soil flow moves to the barrier without pit wall, due to centrifugal force, the crushed soil is thrown around the pit to complete the excavation process.