First, the choice of processing type
Considering the processing technology, plate, price and other factors, select the processing center according to the selected processing materials. If the processing technology is complex and requires edge milling, bag processing, punching, etc., you can choose with automatic tool change and belt row.
Drilling, high precision machining center;
It is necessary to drill vertical holes, side holes and slots for small parts or special-shaped parts, and you can choose a CNC drilling arrangement machining center with movable adsorption blocks that can perform point-to-point adsorption.
When machining complex curved surfaces, such as stair handrails, impellers, handicrafts, etc., five-axis machining centers can be selected; when the size of the processed objects is large, gantry machining centers can be selected.
Second, the accuracy selection
The accuracy of machine tools has a decisive influence on the machining quality, and the tolerance of machining accuracy is generally within 20 wires.
The main factors affecting the accuracy are as follows:
1. The accuracy of the machine tool itself
The rigidity of the machine tool determines whether the bed is stable, but the machining process of the machine tool determines the accuracy of the machine tool itself. Small manufacturers are all manual grinding machine tools, including guide table, fixed rack drilling, etc., because of human factors, the error will be great; Before the lathe bed enters the workshop, professional CNC manufacturers will be milled by a large gantry CNC machining center, including the guide table and the rack surface are all CNC drilled holes, thus avoiding the errors caused by manual machining. At the same time, the lathe bed will be treated by heat treatment annealing, natural aging and vibration aging to eliminate stress and ensure the rigidity of the machine tool.
2. Guide rail accuracy
Linear guide can be divided into three types: roller linear guide, cylindrical linear guide and ball linear guide. The former two are fast and the accuracy is slightly lower, while the latter is slow and the accuracy is higher. Generally, self-lubricating and maintenance-free guide is selected to ensure the accuracy. Japanese and German brands of guide ways are of high quality in the guideway market at present.
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Post time: Mar-06-2023
