1. Using computer simulation system
With the development of computer technology and the constant enlargement of NC machining education, there are more and more NC machining simulation systems and their performance is improving day by day. Therefore, it can be used to start the inspection program and watch the tool movement to determine if there is a possibility of collision.
2. Using the simulation performance of CNC machining center
Generally, the more advanced CNC machining centers have graphic performance. After inputting the program, it is advisable to call graphic simulation to show the performance and watch the moving path of the tool in detail, so as to check whether the tool may collide with the workpiece or fixture.
3. Idling performance of CNC machining center
Using the idling performance of CNC machining center, we can check the accuracy of tool path. When the program is input into CNC machining center, it is advisable to install the tool or workpiece, and then press the idle operation button. At this time, the spindle does not rotate, and the worktable automatically operates according to the program track. At this time, it is advisable to find out whether the tool may collide with the workpiece or fixture. However, in this case, it must be ensured that when the workpiece is installed, the cutter cannot be installed; when the cutter is installed, the workpiece cannot be installed, otherwise there will be collision.
4. Locking performance of CNC machining center
Generally, CNC machining centers have locking performance (full lock or single shaft lock). When the program is entered, the z-axis is locked and the collision can be inferred from the z-axis coordinate value. The use of this performance should avoid tool change and other operations, otherwise the program cannot pass.
5. The configuration of coordinate system and cutter compensation must be accurate
When starting the CNC machining center, it is sure to configure the CNC machining center reference point. CNC machining center working coordinate system should be maintained as the same as programming, which is more and more z-axis target. If there is a mistake, it is quite possible for the milling cutter to collide with the workpiece. For the rest, the configuration of tool length compensation must be accurate. Otherwise, it is either empty machining or collision.
6. Raise programming skills
Programming is an important part of NC machining. To improve programming technology, we can prevent some unnecessary collisions at a great level.
For example, when milling the inner cavity of workpiece, the milling cutter is required to return to 100mm above the workpiece quickly. If programming with N50 G00 x0 Y0 Z100, the CNC machining center will linkage the three axes, and the milling cutter may collide with the workpiece, resulting in the breakage of the cutter and the workpiece, which will affect the accuracy of the CNC machining center, the following programs N40 G00 Z100; N50 x0 Y0 can be selected; That is to say, the tool first moves back to 100 mm above the workpiece, and then returns to the programming zero point, so as to avoid collision.
In a word, to be in charge of the programming technology of CNC machining center can improve the machining efficiency and quality, and prevent unnecessary errors in machining. This requires us to constantly sum up experience in practice and constantly increase, so as to further strengthen the strength of programming and processing