In recent years, the use of five-axis machining centers has generally increased. Thanks to its high-efficiency, high-precision, and high-speed processing characteristics, complex processing can be completed with one clamping of the workpiece, and it can be adapted to parts such as auto parts and aircraft. Processing of modern molds such as structural parts.
The five-axis machining center realizes five-axis linkage machining by adding a dividing head and a rotary table. The five-axis machining center in the standard configuration has three linear movement axes of X, Y, and Z, and can perform various processes such as drilling and milling, boring and expanding, and rigid tapping on various metal workpieces. So, what is the difference between the cutting ability of five-axis machining and three-axis machining?
Five-axis machining on a five-axis machining center is achieved by adding a rotary axis. Usually two rotating shafts are installed on the X-axis, and the rotating shaft that rotates around the X-axis is usually called the A rotating shaft, and the processing range of the A rotating shaft is 30-120 degrees. A turntable is set in the middle of the A rotation axis, and this turntable rotates around the Z axis. It is usually called the C rotation axis, and the C rotation axis can rotate 360 degrees.
With the participation of the A-axis and the C-axis, the five-axis machining center can complete the complex machining of surfaces other than the clamping surface through one workpiece clamping. Usually, the minimum indexing value of the A rotation axis and the C rotation axis is 0.001 degrees, so that the spindle can process to every angle, and there is no machining dead angle at all.
The five-axis machining method of the five-axis machining center has the advantages of simple spindle structure, good spindle rigidity and relatively low manufacturing cost. However, due to the limitation of the machining stroke of the five-axis machining center, the disadvantages are obvious. The workbench cannot be designed too large, and the load-bearing capacity of the workbench is small, especially when the degree of rotation of the A rotation axis is greater than or equal to 90 degrees. The bearing moment will also bring a greater burden to the workbench.
When processing some special workpieces with complex and different surfaces, the traditional three-axis processing form is obviously not competent, and the five-axis machine tool can easily process the parts that need to be processed through the deflection angle of the A and C axes.
