Points for attention in parts processing

Points for attention in parts processing
(1) Fixed feed / retract mode
Each turning tool moves from the tool change point to the feed point in G0 mode. The feed point should be a certain distance from the workpiece in X and Z directions. It is not allowed to be too far or too close. Too far will increase the empty stroke of G01 feed, resulting in low processing efficiency; Too close will increase security risks. When feeding (from the starting point to the starting point of machining), it must feed in the form of G01. When retreating, it must retreat to the retreating point in the form of G01 (there is a certain safe distance between the retreating point and the workpiece), and then move in the form of G0.
(2) Modularization of tool change point setting
The setting of tool change point is related to the efficiency and safety of machining. If the tool change point is set too far away, the time from the tool change point to the feed point will be longer, which reduces the efficiency; If it is too close, it may interfere with the workpiece when changing the tool, causing damage to the tool, workpiece and machine tool. Therefore, if I set the tool change point, the point may be set up or far or near, so I use the subroutine to change the tool point according to the actual situation of the tool and workpiece. When I change the knife, I need to return the tool to the withdrawal point, and then call the subroutine so that the accident rate will be greatly reduced.
(3) Develop standard debugging action
① We must set the G0 speed selection switch to F0 to let the tool approach the workpiece at a slower speed. Otherwise, if the tool deviation value is wrong, the tool may collide with the workpiece when it moves from the tool change point to the feed point in G0 mode, which makes the operator at a loss and there is no time to eliminate the danger; On the contrary, when we let the tool approach at a slower speed, we have plenty of time to adjust even if the tool deviation is wrong.
② When debugging, the machine tool must be in the state of single step execution. After executing the previous sentence, the operator must check the correctness and rationality of the next sentence again, and adjust accordingly. When the machine tool is moving, the operator must always observe the change of the tool coordinate on the screen and whether the movement end point coordinate in the program is consistent with the actual movement coordinate of the tool.
③ In the debugging process, 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 program can be stopped in time in case of emergency. In addition, always remember the position of the emergency button, so that it can be used in a rainy day. The above practice is to reduce the damage to CNC lathe caused by improper programming and operation in CNC lathe, reduce the occurrence of accidents, and ensure the safety of work and practice.