1. Using computer simulation system
nowadays, with the development of computer technology and the continuous expansion of NC machining teaching, there are more and more NC machining simulation systems, and their functions are becoming more and more perfect. Therefore, it can be used for preliminary inspection sequence: observe the movement of the tool to determine whether it is possible to collide, and use the simulation display function of the machine tool.
generally more advanced graphic display function of NC machine tool. After inputting the sequence, you can call the graphic simulation display function to observe the motion path of the tool in detail, so as to check whether the tool may collide with the workpiece or fixture.
2. Use the locking function of the machining center
general CNC machine tools have locking function (full lock or single axis lock). When the sequence is entered, lock the 2 axes, and judge whether there will be collision through the coordinate value of the 2 axes. The application of this function should avoid the operation of tool change, otherwise it cannot pass in sequence.
3. Use the empty running function of the machining center
the correctness of the tool path can be checked by using the empty running function of the machining center. When the machine tool is input in sequence, the tool or workpiece can be installed, and then press the empty running button. At this time, the spindle does not rotate, and the worktable runs automatically according to the sequential path. At this time, you can find out whether the tool may collide with the workpiece or fixture. However, in this case, it is necessary to ensure that when the workpiece is installed, The tool cannot be loaded; When installing the tool, the workpiece cannot be installed, otherwise collision will occur.
4. Coordinate system and cutter compensation must be set correctly
when starting the machining center, be sure to set the machine tool reference point. The working coordinate system of the machining center shall be consistent with R during programming, especially in the 7-axis direction. If Wu makes an error, the possibility of collision between the milling cutter and the workpiece is very large. In addition, the setting of J tool length compensation must be correct. Otherwise, it is either empty machining or collision
Post time: Oct-29-2021