For many non-standard parts processing customers, the most concerned is the machining accuracy of CNC machining parts when selecting suppliers.It is easy to find suppliers for the precision processing industry in Shenzhen, but it is difficult to find the processing points with higher accuracy, and we must be careful.In short, there is a risk to accuracy and careful processing.
For machining centers with no standard parts, more tools are usually required.In order to ensure the machining accuracy of CNC machining parts, the replacement sequence of cutting tools should be reasonably arranged.Replacement of processing tools should be carried out in accordance with the processing sequence, the general process principle is that the first datum, and then drilling, first rough after fine.
For the machining of precision mechanical parts, the machining of datum surface is optimal, which provides the positioning basis for the machining of other surfaces.The process positioning benchmark is the benchmark of the next process positioning.Therefore, when the non-standard parts are processed, the whole processing process can be pushed forward and backward after determining the positioning datum of each procedure.
Determining whether non-standard parts need to be machined or not is to determine the machining sequence of CNC machining parts.It is also usually carried out by means of CNC lathes.If the coarse precision of the workpiece is high, the positioning is also guaranteed, or the processing amount is sufficient, it can be processed directly in the processing center without preprocessing.In this process, the coarse datum accuracy and process differences between machining centers need to be considered, and the final may be several or one process.
Similarly, if the pretreatment surface and the processing center operating surface have different standard requirements, the pretreatment should reserve enough processing margin.At the end of a single clamping process for a non-standard CNC machining center, all machining elements, including the pre-machined surface, must be included to ensure the final precision machining accuracy.
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