The most important thing is to avoid the collision of the machining center when compiling the program and machining. Due to the high price of CNC machining center, the maintenance cost is high in case of collision. However, the collision is traceable and can be avoided. This guide summarizes 5 CNC machining center skills for you, hoping to help you.
1. Using computer simulation system
With the development of computer computing and the continuous expansion of NC machining teaching, there are more NC machining simulation systems and more and more perfect functions. They can be used to preliminarily check the program and observe the movement of CNC tools for CNC machining to determine whether there will be collision.
2. Using the simulation display function of CNC machining center
Generally, advanced CNC machining centers contain graphic display function. After inputting the program, the graphic simulation display function can be called to observe the motion track of NC tool, so as to check whether there will be collision between NC tool and workpiece or fixture.
3. Using the empty running function of CNC machining center
The tool path accuracy can be checked by using the empty running function of CNC machining center. When the program is input into the CNC machining center, the NC tool or workpiece can be installed, and then press the empty run button. At this time, the spindle does not rotate, and the workbench runs automatically according to the program track. At this time, you can find out whether the NC tool collides with the workpiece or fixture, but you must ensure that the NC tool cannot be installed when the workpiece is installed, When installing NC tools, do not install workpieces, otherwise collision will occur.
4. Using the locking function of CNC machining center
Generally, CNC machining centers have locking function. After entering the program, lock the z-axis, and judge whether there will be collision through the coordinate value of z-axis. The application of this function should avoid the tool change operation, otherwise the program cannot pass.
5. Improve programming skills
Programming is a very important link in NC machining. Improving programming skills can prevent unnecessary collision to a great extent. For example, when milling the inner cavity of the workpiece, the milling cutter needs to quickly return to 100mm above the workpiece. If N50 G00 x0 Y0 Z100 is used for programming, the CNC machining center will linkage three axes at this time. The milling cutter may collide with the workpiece, damage the CNC cutter and workpiece, and affect the accuracy of the CNC machining center. At this time, the following procedures can be used: N40 G00 Z100; N50 X0 Y0； That is, the NC tool first retreats to 100mm above the workpiece, and then returns to the programming zero point, so that there will be no collision. That is, mastering the programming skills of the machining center can improve the machining efficiency and machining quality, and prevent unnecessary errors in machining. This requires us to sum up experience in practice, continuously improve and further improve the programming and machining ability.