How to operate the CNC flame cutter to reduce the error.
The cutting accuracy of the gantry CNC flame cutting machine depends on the thickness of the plate, the cutting type, the quality of the gas such as oxygen purity, due to the width of the cutting nozzle and many other factors, no matter how high the accuracy of the equipment itself, the precision of the part cutting error is generally several times magnitude higher than the error. This is determined by the flame cutting process and method, other CNC equipment such as CNC lathe processing accuracy is not available.
For parts with relatively few long diameters, the flame plasma cutter, almost all of its thermal expansion is in the same direction, so only the slot compensation K plus a thermal expansion compensation amount T.
For parts with a large diameter ratio, the expansion in all directions also varies greatly, so not only the compensation slot K plus a single thermal expansion compensation amount can guarantee the size of the cut part. Compensation slot K unilateral thermal expansion compensation amount T1 short diameter direction, while compensating the amount of thermal expansion, along the direction of its length of thermal expansion compensation between the total difference, short diameter direction should be directly in the cutting process, so as to ensure the size accuracy of the cutting part.
In the cutting process of CNC cutting machine, no matter what cutting path is chosen, the part must be cut almost completely, so that there is sufficient connection stiffness between the part and the steel plate to ensure the size and accuracy of the workpiece.
If the operator controls the thermal expansion of the steel plate is not familiar with or not enough experience, it can also be used to use physical cooling method to cut the cooling and cooling of the workpiece, cutting the steel plate is near room temperature, as far as possible to make the thermal expansion of the steel plate control, so as to ensure the size of the cutting part. However, this method is only applicable to product quality with a small hardening tendency or a small quenching amount.
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