The distinguishing feature of 5-axis machining centers is the ability to machine curved surfaces without the need for special fixtures, which greatly reduces the number of fixtures used. True 5-axis machining centers are equipped with tool point following-RPTC, a technology that allows for better 5-axis simultaneous machining. For 5-axis machining centers with RTCP, the tool center is always kept at the programmed position. In this case, the tool direction can be optimized along the entire path while the tool moves in a straight line. This maintains good cutting conditions throughout the entire path. When programming on a 5-axis machining center, there is no need to worry about machine movement or tool length, all that needs to be taken into account is the relative motion between the tool and the workpiece. The control system does the rest.
Five-axis machining centers can not only greatly reduce the operator's labor intensity, but also eliminates a lot of clamping process, reducing the use of fixtures, reducing fixture costs. In the field of processing complex heterogeneous workpieces, it has incomparable advantages.
Some users may be 3 + 2-axis is not a five-axis machining center, how to choose the processing conditions in doubt. Now on the market commonly used machining centers are mostly vertical machining centers, of which three-axis is a common way. Three-axis machining center consists of linear feed axes X, Y, Z axis, in general, the direction of the cutting tool remains constant along the entire cutting path movement. Different machine models are created with different machining strokes.
Although 3-axis machining centers have the advantage of high precision and high efficiency, they are more troublesome when machining complex heterogeneous workpieces. Due to the long tool length, multiple process increases and multiple clamping are required. At the same time, repeated tool setting produces cumulative tolerance, easy to overcut will also cause workpiece failure. Therefore, in the processing of more complex workpieces when the multi-axis linkage processing has become the main choice.
3+2-axis technology is not really a five-axis horizontal machining center.
Many friends think that the five-axis machining center is on the basis of three-axis machining centers, add two rotary axes, two rotary axes will first cut the tool is fixed in a tilted position, and then by the feed axis X, Y, Z for processing. Since the fourth and fifth axes are used to determine the direction of the tool in the fixed position, rather than running continuously during the machining process. Therefore, this is not a real five-axis linkage technology. 3+2 axis machining center can meet the machining operations that cannot be completed by ordinary machining center, but this is also not a real five-axis machining center.
