For CNC machining, programming is very important, which directly affects the quality and efficiency of machining. So how to quickly master the programming skills of CNC machining centers? Let’s learn together!
Pause command, G04X(U)_/P_ refers to the tool pause time (feed stop, the spindle does not stop), the value after the address P or X is the pause time. The value after X must have a decimal point, otherwise it is calculated as one thousandth of the value, in seconds (s), and the value after P cannot have a decimal point (that is, integer representation), in milliseconds (ms). However, in some hole system machining commands (such as G82, G88 and G89), in order to ensure the roughness of the hole bottom, a pause time is required when the tool reaches the hole bottom. At this time, it can only be represented by the address P. Address X indicates that the control system considers X to be the X-axis coordinate value to execute.
Differences and connections between M00, M01, M02 and M03, M00 is an unconditional program pause command. When the program is executed, the feed stops and the spindle stops. To restart the program, you must first return to the JOG state, press CW (spindle forward rotation) to start the spindle, and then return to the AUTO state, press the START key to start the program. M01 is a program selective pause command. Before the program is executed, the OPSTOP button on the control panel must be turned on to execute it. The effect after execution is the same as that of M00. To restart the program is the same as above. M00 and M01 are often used for inspection of workpiece dimensions or chip removal in the middle of processing. M02 is the command to end the main program. When this command is executed, the feed stops, the spindle stops, and the coolant is turned off. But the program cursor stops at the end of the program. M30 is the main program end command. The function is the same as M02, the difference is that the cursor returns to the program head position, regardless of whether there are other blocks after M30.
Circular interpolation command, G02 is clockwise interpolation, G03 is counterclockwise interpolation, in the XY plane, the format is as follows: G02/G03X_Y_I_K_F_ or G02/G03X_Y_R_F_, where X, Y are the coordinates of the arc end point, I, J It is the incremental value of the arc starting point to the circle center on the X and Y axes, R is the arc radius, and F is the feed amount. Note that when q≤180°, R is a positive value; q>180°, R is a negative value; I and K can also be specified by R. When both are specified at the same time, the R command has priority, and I , K is invalid; R cannot perform full-circle cutting, and full-circle cutting can only be programmed with I, J, K, because there are countless circles with the same radius after passing through the same point. When I and K are zero, they can be omitted; regardless of G90 or G91 mode, I, J, K are programmed according to relative coordinates; during circular interpolation, tool compensation command G41/G42 cannot be used.
Post time: Sep-22-2022
