When determining the coordinate system of the CNC machine tool, which of the following principles is adopted for the movement relationship between the tool and the workpiece? ( ) A: Assuming the tool moves, the workpiece is stationary B: Assuming the workpiece moves, the tool is stationary C: It depends on the situation D: Assuming that the tool and workpiece are not moving

(3 points) The machining process system includes (). A: machine tool, tool, fixture and workpiece B: worker, tool, fixture and workpiece C: machine tool, tool, worker and workpiece D: machine tool, tool, fixture and worker

What is the main form of turning machining? ( ) A: Workpiece rotation B: Workpiece linear motion C: Tool rotation D: Tool linear motion

The three cutting parameters for turning processing are ( ). A: cutting speed, feed and depth of cut B: cutting speed, workpiece rotational frequency and depth of cut C: workpiece rotational frequency, feed and depth of cut D: depth of cut, workpiece rotational frequency and feed

The values set in the G54 are ( ). A: Origin of workpiece coordinate system B: Offset of origin of workpiece coordinate system relative to origin of machine tool coordinate system C: Length deviation value of tool D: Offset of workpiece coordinate system origin relative to tool alignment point

The technological system consists of A: machine tool B: fixture C: cutting tool D: workpiece

中国大学MOOC: workpiece的设置对刀路轨迹的正确性不会产生影响。

(3 points) The core of machining process system is (). A: machine tool B: fixture C: tool D: workpiece

The slotting machine is mainly used for machining the inner surface of the workpiece, and the main motion is the vertical reciprocal rectilinear motion of the tool.

To set the workpiece coordinate system with G54, the tool setting point must be used as the starting point of tool movement relative to the workpiece.