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CNC lathes generally require the use of ambient tempera […]
CNC lathes generally require the use of ambient temperature to ensure the working accuracy of the machine, generally requiring a constant temperature of 20 degrees Celsius. A large number of practices have proved that during the high temperature period in summer, the failure rate of the numerical control system is greatly increased, which is easy to cause a collision accident. The humid environment will also reduce the reliability of the operation of the CNC lathe. Therefore, the dehumidification measures should be taken in the environment of the CNC lathe to avoid short circuit of the circuit, causing misoperation of the numerical control system and collision. At the same time, CNC lathes are required to be away from vibration sources such as forging equipment, away from electromagnetic field interference, away from electric welding machines, and away from electric cutting machines such as wire cutting machines and EDM machines. Develop the standard debugging actions, including the following:
When debugging the program, the G00 speed selection switch must be placed on the F0 gear to allow the tool to approach the workpiece at a slower speed. Otherwise, once the tool offset is wrong, the tool moves from the tool change point to the feed in G00 mode. When the point is reached, there may be a strong collision with the workpiece, so that the operator is at a loss, and it is too late to eliminate the danger; on the contrary, when the tool is approached at a slower speed, even if the tool is wrong, the operator has sufficient time to adjust.
When debugging the program, the CNC lathe must be in a single-step state. After the operator executes the previous block on the CNC lathe, the correctness and rationality of the next block must be checked again and adjusted accordingly.
During the movement of the CNC lathe, the operator must constantly observe the change of the tool coordinates on the screen and whether the coordinates of the motion end point in the program are consistent with the coordinates of the actual motion of the tool.
During the debugging process, the operator can place one finger on the loop start button and the other finger on the loop hold button to stop the execution of the program in an emergency. Always remember the location of the emergency button so you can do it when you need it.
When starting the machine, it is generally necessary to set the machine reference point. The machine tool coordinate system should be consistent with the programmed coordinate system. If there is an error, the possibility of the tool and the workpiece colliding is very large. In addition, the tool length compensation must be set correctly, otherwise it is either empty machining or collision.
The debugging phase of the program uses the computer simulation function. With the development of computer technology, the teaching of CNC machining has been continuously expanded, and more and more CNC machining simulation systems have been developed, and its functions have become more and more perfect. It can therefore be used in a preliminary inspection procedure to observe the movement of the tool to determine if a collision is possible. Use the graphic simulation processing function of the CNC lathe. Generally, the more advanced CNC lathes have the function of graphic simulation processing. Before the automatic processing, in order to avoid the program error, the tool collides with the workpiece or the chuck, and the whole machining process can be graphically simulated to check whether the tool path is correct.