In order to simplify the way of programming for CNC machining and ensure the exchange of recorded data. The naming of the coordinates and targets of CNC machine tools has been formulated in the world for a long time. Jb3051-82 “naming of coordinates and targets of CNC machine tools” was formulated in 1982 in China.
In the CNC machining rules, the right-hand Cartesian coordinate system is selected to name the coordinate system of the machine tool. X, y and Z are used to represent the linear feed coordinate axis, and the relationship between X, y and Z coordinate axes is decided by the right skill:
The circular feed coordinate axis rotating around the X, y and Z axes is represented by a, B and C. according to the right-hand spiral rule, the targets of + A, + B and + C are confirmed, as shown in the figure.
Some of the feeding activities of CNC machine tools are completed by the spindle to start the cutter activities, some by the worktable with the workpiece activities. In normal programming, no matter whether the machine tool moves during machining or the workpiece is still moved, if the workpiece to be machined is relatively stationary, and the cutter is moving, and the object that the cutter is far away from the workpiece is the positive target Z axis of the coordinate coincides with the axis of the spindle, and the object that the cutter is far away from the workpiece is the positive target (+ Z); The x-axis is perpendicular to the Z-axis and parallel to the clamping surface of the workpiece. If it is a single column milling machine, the right moving target is the positive target (+ x) of the x-axis when facing the tool spindle to the column target; the y-axis can be confirmed according to the selected x-axis and z-axis according to the right technique..
About the author