Five-axis linkage engraving machine working method and advantages
The working mode of the five-axis linkage engraving machine is divided into point contact, surface contact and line contact. The following is a brief introduction for everyone.
1. Point contact - the most widely used type of five-axis machining.
The so-called point contact processing refers to the point contact forming processing method during the machining process, such as spherical milling cutter and spherical grinding wheel grinding. The main feature of this type of machining is that the spherical normal vector points to the entire space, and the surface normal vector has the ability to adapt. Compared with the line and surface contact processing, the programming is simple and the calculation is as long as the radius of the tool is smaller than the minimum radius of curvature. The surface can avoid interference. It is therefore suitable for any surface treatment. However, due to contact molding, the cutting speed is close to zero, so the cutting conditions are poor, and the machining accuracy and efficiency are low.
2, surface contact
The so-called surface contact processing refers to a surface contact forming processing method such as grinding (grinding) processing. The main feature of this type of processing is that due to the high cutting speed of the cutting point, the circulating feed is large, the processing efficiency is high, and the machining accuracy is high. However, due to the molding method of the mold and the shape of the cutter, it is mainly suitable for the convex curve change of the flat surface.
3, line contact - five-axis machining CNC machining current and future research focus.
The so-called line contact processing refers to the process of contact with the line during processing, such as cylindrical peripheral milling, cone milling, camshaft drilling and belt grinding. This type of machining is characterized by high cutting speed and high machining accuracy. At the same time, processing efficiency is improved due to contact molding. Has been developed to any surface contact processing research.
The advantage of the five-axis linkage engraving machine is that the workpiece is easy to clamp. No special fixtures are processed, the fixture cost is reduced, a large number of fixtures are avoided, and the precision of the mold processing is improved. The number of fixtures used can be reduced by using a five-axis machining tool. In addition, because the five-axis machine can save a lot of special tools during the machining process, the cost of the tool is reduced. The five-axis CNC machine tool can increase the effective cutting edge length of the tool, reduce cutting force, improve tool life and reduce cost. Using a five-axis machine tool to process the mold can quickly complete the mold processing, fast delivery, better guarantee mold processing quality, mold processing becomes easier, and mold modification is easier. In the traditional mold processing, the vertical machining center is generally used to complete the milling of the workpiece. With the continuous development of mold manufacturing technology, some shortcomings of the vertical machining center itself are becoming more and more obvious. Modern mold processing is generally handled by ball-end milling cutters. The benefits of ball milling cutters in mold processing are obvious, but if the vertical machining center and then the bottom line speed is zero, the finished bottom is very poor, if four or five You can overcome the above shortcomings by machining the mold with the shaft machining technology.
