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Tips for CNC Programming

This article will share you some Tips for CNC Macchining Aluminum Brasss Stainless Steel Parts

In the machining process of the CNC machining center, it is very important to avoid the collision of the CNC machining center when programming and operating the machining. Because the price of CNC machining centers is very expensive, ranging from hundreds of thousands of yuan to millions of yuan, the maintenance is difficult and the cost is high. However, the occurrence of collisions has certain rules to follow and can be avoided, which can be summarized as the following points.

  1. Using computer simulation system
    With the development of computer technology and the continuous expansion of CNC machining teaching, there are more and more CNC machining simulation systems, and their functions are becoming more and more perfect. Therefore, it can be used in a preliminary inspection program to observe the movement of the tool to determine if a collision is possible.
  2. Use the simulation display function of the CNC machining center
    Generally, more advanced CNC machining centers have graphics display functions. When the program is input, the graphic simulation display function can be called to observe the movement path of the tool in detail, so as to check whether the tool may collide with the workpiece or fixture.
  3. Use the dry run function of the CNC machining center
    The correctness of the tool path can be checked by using the dry run function of the CNC machining center. When the program is input into the CNC machining center, the tool or workpiece can be installed, and then the dry run button is pressed. At this time, the spindle does not rotate, and the worktable automatically runs according to the program path. At this time, it is possible to find out whether the tool may be in contact with the workpiece or the fixture. bump. However, in this case, it must be ensured that when the workpiece is installed, the tool cannot be installed; when the tool is installed, the workpiece cannot be installed, otherwise a collision will occur.
  4. Use the locking function of the CNC machining center
    General CNC machining centers have a locking function (full lock or single axis lock). After entering the program, lock the Z-axis, and judge whether a collision will occur by the coordinate value of the Z-axis. The application of this function should avoid operations such as tool change, otherwise the program cannot be passed.
  5. The setting of coordinate system and tool compensation must be correct
    When starting the CNC machining center, be sure to set the CNC machining center reference point. The working coordinate system of the CNC machining center should be consistent with the programming, especially the Z-axis direction. If there is an error, the possibility of the milling cutter and the workpiece colliding is very high. In addition, the tool length compensation must be set correctly, otherwise, either an empty machining or a collision occurs.
  6. Improve your programming skills
    Programming is a crucial part of CNC machining, and improving programming skills can largely avoid unnecessary collisions.
    For example, when milling the inner cavity of a workpiece, when the milling is completed, the milling cutter needs to be quickly retracted to 100mm above the workpiece. If N50 G00 X0 Y0 Z100 is used to program, the CNC machining center will link the three axes, and the milling cutter may collide with the workpiece. Collision occurs, causing damage to the tool and the workpiece, which seriously affects the accuracy of the CNC machining center. At this time, the following programs can be used: N40 G00 Z100; N50 X0 Y0; that is, the tool first retreats to 100mm above the workpiece, and then returns to the programmed zero point, so that it will not collision.
    In short, mastering the programming skills of the machining center can better improve the machining efficiency and machining quality, and avoid unnecessary errors in machining. This requires us to continuously sum up experience and improve in practice, so as to further strengthen programming and processing capabilities.

Related seaarch terms:

aluminum machining services
cnc metal
cnc turning parts
cnc precision parts

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