7. In most cases, is the first machining operation performed in the total production of a hole. To better locate a hole center, a short, stubby drill called a is used first. is used for enlargement of an existing hole and accurate readjustment of the center location of the enlarged hole. is the process of cutting threads on the inside of a hole by a tap. (4 points) 8. In milling, the axis of rotation of the cutter is parallel to the machined surface. In milling, the axis of rotation of the cutter is perpendicular to the machined surface. Choose from "face" and "profiling". (6 points) 2. According to whether the tool has constant contact with the work material, the tool movements enabled by controllers can be categorized into tool movement and tool movement. (6 Points) 3. is a mathematical method of approximating the true or exact positions required to follow a precalculated path. (2 points) A. Climbing C. Tchaikovsky's Milling Theorem B. CMM edge finding D. Interpolation 4. Depending on whether feedback exists, there are two main systems in use today for controlling CNC machine movements: the system and the system. (6 Points) 7. In most cases, is the first machining operation performed in the total production of a hole. To better locate a hole center, a short, stubby drill called a is used first. is used for enlargement of an existing hole and accurate readjustment of the center location of the enlarged hole. is the process of cutting threads on the inside of a hole by a tap. (4 points) 8. In milling, the axis of rotation of the cutter is parallel to the machined surface. In milling, the axis of rotation of the cutter is perpendicular to the machined surface. Choose from "face" and "profiling". (6 points) 2. According to whether the tool has constant contact with the work material, the tool movements enabled by controllers can be categorized into tool movement and tool movement. (6 Points) 3. is a mathematical method of approximating the true or exact positions required to follow a precalculated path. (2 points) A. Climbing C. Tchaikovsky's Milling Theorem B. CMM edge finding D. Interpolation 4. Depending on whether feedback exists, there are two main systems in use today for controlling CNC machine movements: the system and the system. (6 Points)