1, vertical machining center: refers to the spindle axis line set in vertical state of the processing center. The vertical machining center usually has three rectilinear motion coordinates, and the worktable has the function of indexing and rotation. The NC rotary table with a horizontal axis can be installed on the worktable for machining spiral parts. Vertical machining centers are mostly used for machining cylinder, single box, box cover, plate parts and plane cam. Vertical machining center has the advantages of simple structure, small footprint and low price.
2, horizontal machining center: refers to the spindle axis is set up in the horizontal state of the processing center. The horizontal machining center usually has 3-5 motion coordinates. The common three linear motion coordinates (along the direction of X, Y, Z axis) add a rotary coordinate (worktable), which enables the workpiece to be installed at one time to complete the other four surfaces other than the installation surface and the top surface. Horizontal machining center is more widely used than vertical machining center, suitable for complex box parts, pump body, valve body and other parts processing. But the horizontal machining center has large area, large weight, complex structure and high price.
3, Longmen machining center: similar to Longmen milling machine, suitable for large or complex workpiece processing.
4, omnipotent processing center: universal processing center also known as five face processing center, small workpiece clamp can complete all surface processing except the installation surface, with vertical and horizontal machining center function, the common universal processing center has two forms: one is the spindle can rotate 900 degrees, as well as vertical processing center, can also be like horizontal addition. The machining center is the same; the other is that the spindle does not change direction, and the workbench rotates 900 degrees with the workpiece to complete the machining of the five surfaces of the workpiece. Installing the workpiece in the universal machining center avoids the installation error caused by the secondary clamping, so the efficiency and accuracy are high, but the structure is complex and the cost is high.