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Machining centers are classified as vertical or horizontal.
加工中心可以分为立式和卧式。
The descriptor refers to the orientation of the machine tool spindle.
这是参照机床主轴方向来划分的。
A vertical machining center has its spindle on a vertical axis relative to the worktable, and a horizontal machining center has its spindle on a horizontal axis.
立式加工中心具有轴线相对工作台垂直的主轴，卧式车床的主轴轴线是水平方向的。
This distinction generally results in a difference in the type of work that requires tool access from the top.
这种区别通常会导致在这些加工中心加工的零件类型不同。
A horizontal machining center is used for cube-shaped parts where tool access can best be achieved on the sides of the cube.
立式加工中心用于以上进刀的平面工作。卧式加工中心用于立体形状，刀具在立体侧面可以进刀。
An example of an NC horizontal machining center, capable of many of the features described above, is shown in Fig.2.2.
一台数控卧式加工中心，例子如图2.2 所示，具有上面提到的一些特征。
The success of the machining center has resulted in the development of similar machine tools for other metal working processes.
加工中心的成功应用导致了其他类似金属加 工机床的发展。
One example is the turning center, designed as a highly automated and versatile machine tool for performing turning, facing, drilling, threading, and related operation.
例如，在车削中心，把车削加工设计成一个高度自动化万能机床可以完成车削，刨，钻，螺纹加工和类似的操作.
