Precision machining processing queries that need your attention
Precision machining processing queries that need your attention
To ensure accuracy, rough, finishing best be separated. Because when roughing, cutting large workpiece suffered cutting force, clamping force, more heat, and the appearance of a more visible process hardening phenomenon within the workpiece there is a big stress, if rough, rough successively performed after finishing the part accuracy due to stress from the beginning but soon distribution losses. For high precision needs some parts. Before After roughing and finishing, it should also be organized low-temperature annealing or aging treatment process to eliminate internal stress.
Reasonable selection of equipment. Mainly roughing cut most allowance and does not demand high precision, so roughing larger power should be carried out on a high precision machine tools, precision machining step with the needs of high precision the machining. Rough, finishing machining on separate machines, both in order to give full play equipment, but also extends the service life of the machine fine.
In precision machining technology road, often organization heat treatment step. Heat treatment process orientation is organized as follows: In order to improve the cutting performance of metal, such as annealing, normalizing, quenching, usually carried out by the organization before machining. In order to eliminate the internal stress, such as aging, quenching, usually organized after roughing, finishing performed before. In order to improve the mechanical properties of parts, such as carburizing, quenching and tempering, is usually organized at a later machining performed. As a larger deformation after heat treatment, must organize the final processing step.
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