CNC Machining Center: The CNC lathe should be installed on a solid foundation, and the location should be away from the vibration source; avoid sunlight and heat radiation; place it in a dry place to avoid the influence of humidity and airflow. If there is a vibration source near the machine tool, anti-vibration grooves must be set around the foundation.
The CNC lathe is placed on the foundation, it should be leveled in a free state, and then the anchor bolts should be evenly locked. For ordinary machine tools, the level reading does not exceed 0.04 / 1000mm, for high-precision machine tools, the level does not exceed 0.02 / 1000mm. When measuring the installation accuracy, it should be carried out at a constant temperature, and the measuring tool needs to be used after a fixed temperature period. During the installation of the machine tool, installation methods that force the machine tool to deform should be avoided. During the installation of the machine tool, some parts of the machine tool should not be removed casually. The disassembly of the parts may cause an important new distribution of the internal stress of the machine tool, thereby affecting the accuracy of the machine tool.
After the geometric accuracy of the machine tool is qualified, the whole machine needs to be cleaned. Use cotton cloth or silk cloth impregnated with cleaning agent. Do not use cotton yarn or gauze. Clean the anti-rust oil or anti-rust paint applied to protect the guide rail surface and the processed surface when the machine tool leaves the factory. Clean the dust on the outer surface of the machine. Apply lubricant to each sliding surface and working surface as specified by the machine tool.
Check carefully whether all parts of the machine are filled with oil as required, and whether the cooling tank is filled with sufficient coolant. Whether the oil of the lubricating device of the machine tool hydraulic station and automatic room reaches the position specified by the oil level indicator.
Check whether the switches and components in the electrical control box are normal, and whether the inserted integrated circuit boards are in place. Energize to start centralized lubricating equipment, so that all lubricating parts and lubricating oil circuits are filled with lubricating oil. Make all preparations before the movement of each part of the machine tool.
For CNC lathes, we must develop standardized debugging actions:
1. When debugging the program
you must put the G00 speed selection switch on the F0 gear to let the tool approach the workpiece at a slower speed, otherwise, once the tool is wrong, the tool will move from the tool change point to the tool very quickly in G00 mode At the point of time, there may be a strong collision with the workpiece, so that the operator is at a loss, too late to rule out the danger; on the contrary, when the tool is approached at a slower speed, even if the tool is wrong, the operator has enough time to adjust.
2. When debugging the program
the CNC lathe must be in a single-step execution state. After the operator executes the previous block on the CNC lathe, he must check the correctness and rationality of the next block again and make adjustments accordingly.
3. During the movement of the CNC lathe
the operator must always observe the change of the tool coordinates on the screen and whether the coordinates of the movement end point in the program are consistent with the coordinates of the actual tool movement.
4. During program debugging,
The operator can put one finger on the cycle start button and the other finger on the side of the cycle hold button, so that the execution of the program can be stopped in a timely manner in an emergency. At the same time, always remember the location of the emergency button, so that it is in case of need.
When starting the machine, the machine reference point is generally set. The workpiece coordinate system of the machine tool should be consistent with the programmed coordinate system. If an error occurs, the possibility of collision between the turning tool and the workpiece is very high. In addition, the tool length compensation must be set correctly, otherwise, either empty machining or collision.
5. The debugging phase of the program
Use computer simulation function. 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 the preliminary inspection program to observe the movement of the tool to determine whether a collision may occur.
Use the numerical simulation processing function of the CNC lathe. Generally, the more advanced CNC lathes have their own graphics simulation processing function. Before automatic processing, in order to avoid program errors, the tool collides with the workpiece or the chuck, and the entire machining process can be graphically simulated to check whether the tool path is correct.
