CNC machining process programming tips

1, Using computer simulation system

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. It can therefore be used in a preliminary inspection procedure to observe the movement of the tool to determine whether a collision is possible.

2, the use of CNC machining center with its own simulation display function

Generally more advanced CNC machining center has a graphic display function. When the input program, you can call the graphic simulation display function, detailed observation of the tool trajectory, in order to check whether there is a possible collision between the tool and the workpiece or fixture.

3, the use of CNC machining center empty operation function

The empty running function of CNC machining center can be used to check the correctness of the tool path. When the program into the CNC machining center, can be installed on the tool or workpiece, and then press the empty operation button, at this time the spindle does not turn, the work table according to the program track automatic operation, at this time can be found whether the tool is likely to touch the workpiece or fixture. However, in this case, it is necessary to ensure that the workpiece can not be installed with the cutter; When the tool is installed, the workpiece cannot be installed, otherwise the collision will occur.

4, the use of CNC machining center lock function

The general CNC machining center has a lock function (full lock or single axle lock). When the program is entered, the Z axis is locked, and the coordinate value of the Z axis can be used to determine whether a collision will occur. The application of this function should avoid knife change and other operations, otherwise the program cannot be passed.

5, The setting of coordinate system and tool complement must be correct

When starting the CNC machining center, it is necessary to set the CNC machining center reference point. CNC machining center work coordinate system should be consistent with the programming, especially the direction of the Z axis, if the error, the possibility of the milling cutter and the workpiece collision is very large. In addition, the tool length compensation must be set correctly, otherwise, either blank machining, or collision.

6, improve programming skills

Programming is the most important part of CNC machining. Improving programming skills can avoid some unnecessary collisions to a great extent.