刚度——这是机床的一种特性。它与必须保证机床一定水平的精度和抗振性有关。机床的金属量一般比功率相同的其他机器大,这样可保证机床所需的足够强度。要达到高的刚度甚为复杂,因在机床内有许多活动的(如导轨)、未被拉紧的和固定的接合件。图1所示为常见的梁结构(图1,a～c)和 Stiffness - This is a feature of machine tools. It must be guaranteed to a certain level of accuracy and vibration resistance of the machine. The amount of metal in a machine tool is generally larger than the other machines with the same power, which guarantees sufficient strength for the machine. Achieving high stiffness is complicated by the fact that there are many moving (eg guide rails), untwisted and fixed joints in the machine. Figure 1 shows the common beam structure (Figure 1, a ~ c) and