Rapid Positioning Instruction G00 of NC Milling Machine Programming
NC (Numerical Control) milling machine is applied to process complicated curved surfaces, especially suitable for processing hard material. NC milling machine is widely used in mold manufacturing, hardware processing, auto parts processing, aerospace industry and other fields. NC milling machine is generally appied NC programming instructions to control the shape and size of materials.
G00 is a rapid positioning command used to instruct NC milling machine move at the fastest speed (called rapid move speed) to point (x, y, z) on the coordinate system to complete the rapid positioning motion.
Syntax format
G00X_Y_Z_;
The scheduling parameters are expressed in absolute coordinates and relative coordinates. When G00 is used in coordinates expression, the meaning should be understood according to the position of the current coordinate point. The following table shows the meaning of G00 commands used for different coordinates.
Absolute coordinate
G00X_Y_Z_; The command means the X, Y, Z coordinates of the current absolute coordinates are respectively changed to the X_, Y_, Z_ coordinates in the command and quickly move forward to the specified position.
Relative coordinate
G00X_Y_Z_; The command means that the X, Y, Z coordinates of the current relative coordinates are respectively changed to the X _, Y _, and Z_ coordinates gained by the addition of the command to the current coordinates, and quickly move forward.
instructions
1. Because of the special characteristics of rapid motion, the program instruction should not be set too many intermediate points and the interval should not be set too large.
2. Generally, the faster the speed of segmented motion, the smoother the movement, so it is better to choose the G01 programming instruction if the speed of segmented motion is not too high.
3. G00 instruction can only be used for position movement and can not be used for contour cutting machining, because the position of the spindle in the rapid movement state is not accurately given, so it cant ensure the accuracy of the machined product.
4. When using G00 in programming, the tool contact edge should be avoided.
Safety Precautions
1. In order to ensure the safety of yourself, others and the machine, please pay attention to the following safety precautions when using G00 instruction:
2. Do not use G00 instruction to move the spindle to the location near any edge that may be in contact with the tool.
3. Pay attention to the surrounding conditions when using G00 instruction to move the spindle at high speed.
4. Before using G00 instruction to move the spindle, you should make sure that all the tools and tools are laid out according to the drawings, fixed on the machine, and the tool overhang is safe.
5. Do not move the spindle in G00 motion with the tool hold of the machine tool.
In summary, G00 programming command can help NC milling machine quickly move to the position indicated by X, Y, Z coordinates. Therefore, correct and reasonable use of G00 instruction can make the processing efficiency of NC milling machine faster and more accurate.
