)立式加工中心

　　1) vertical machining center

　　立式加工中心是指主轴为垂直状态的加工中心，其结构形式多为固定立柱，工作台为长方形，无分度回转功能，适合加工盘、套、板类零件，它一般具有三个直线运动坐标轴，并可在工作台上安装一个沿水平轴旋转的回转台，用以加工螺旋线类零件。

　　Vertical machining center is spindle vertical machining center and the structure is fixed column, table is rectangular, no rotary indexing function, suitable for machining disc, set, plate type parts, it generally has three rectilinear motion coordinate axis, and in the workbench installed a along the horizontal axis of rotation of the rotary table, the spiral machining parts.

　　The vertical machining center is convenient to install, easy to operate, easy to observe and process, easy to debug, and wide application. But by the height of the column and change the knife device and parts processing can not be too high, in the processing cavity or a concave surface, chip is not easy eduction, serious will tool damage, damage to the machined surface, influencing the process smoothly.

　　2)卧式加工中心

　　2) horizontal machining center

　　卧式加工中心指主轴为水平状态的加工中心，通常都带有自动分度的回转工作台，它一般具有3～5个运动坐标，常见的是三个直线运动坐标加一个回转运动坐标， 工件在一次装卡后，完成除安装面和顶面以外的其余四个表面的加工，它最适合加上箱体类零件。与立式加工中心相比较，卧式加工中心加工时排屑容易，对加工有 利，但结构复杂.价格较高.

　　Horizontal machining center spindle horizontal machining center, usually with automatic indexing rotary table, it generally has three to five motion coordinate, common is three rectilinear motion coordinate with a rotary motion coordinate workpiece in one time clamping, except the mounting surface and the top surface of the remaining four surface processing. It is most suitable for box type parts of. Compared with the vertical machining center, horizontal machining center is easy to chip, which is advantageous to the processing, but the structure is complex, the price is higher.