What should I do if the turret collides and dislocates during CNC lathe machining? Methods of Preventing Machine Tool Operation Collision
Beginners in CNC machine operation, collisions often occur. Machine tool collision has great damage to the accuracy of the machine tool, and it has different effects on different types of machine tools. Generally speaking, the machine tool with less rigidity has a greater impact, and the machine tool with a stronger gantry structure has less impact under the same impact force. If the machine tool is a cantilever structure, or the machine tool spindle is a machine tool structure mounted on a rotary axis, once the machine tool collides, the impact on the accuracy of the machine tool is fatal. Therefore, for high-precision CNC machine tools, collisions must be avoided. As long as the operator is careful and masters certain anti-collision methods, the collision can be completely prevented and avoided.
The following points may be helpful for beginners of CNC machine tools to prevent collisions.
The main reasons for the collision:
One is the wrong input of the diameter and length of the tool or grinding wheel;
The second is the input error of the size of the workpiece and other related geometric dimensions and the error of the initial position of the workpiece;
The third is that the workpiece coordinate system of the machine tool is set incorrectly, or the zero point of the machine tool is reset during processing and changes.
Most of the machine tool collisions occur during the rapid movement of the machine tools, and the collisions that occur at this time are also very harmful and should be avoided. Therefore, the operator should pay special attention to the initial stage of the machine tool executing the program and when the machine tool is replacing the tool or grinding wheel. Once the program is edited incorrectly and the diameter and length of the tool or grinding wheel are entered incorrectly, collisions are likely to occur. At the end of the program, if the order of retraction of each CNC axis is wrong, a collision may also occur.
In order to avoid the above-mentioned collision, when starting to use the tool and grinding wheel, it is necessary to carefully carry out the tool setting, and this problem cannot be taken lightly.
In order to avoid collisions, the operator should give full play to the functions of the five senses when operating the machine tool, and observe whether the machine tool has abnormal movements, whether there are sparks, whether there is noise and abnormal noise, whether there is vibration, and whether there is a burning smell. If an abnormal situation is found, the program should be stopped immediately, and the machine tool can continue to work after the machine tool problem is solved.
Before operation, the operator should receive safety training for machine tool operation. Each type of machine tool should have safety operation procedures. Operators should undergo systematic operation and safety training, and can only work on the machine tool after holding a qualified job certificate.
Before working, the position of the fire extinguisher should be known, and the operator should master the method of the fire extinguisher, the position of the air pressure switch of the machine tool, the position of the input power switch of the machine tool, the position of the hydraulic workstation, and the method of emergency shutdown. Grinders with cooling oil should place the fire extinguisher within three meters of the machine.
