机床铸件的加工精度直接影响着机床的自身成本，国内市场上大多数机床铸件，和机床床身价目高低差别很大，导致价格高低差的原因是：铸件的加工质量与成本对机床价格有着密切的关系。铸件加工精度要求高，将会使加工过程复杂化，导致铸件成本上升。
The machining accuracy of machine tool castings directly affects the cost of the machine tool itself. The price difference between most machine tool castings and machine tool bed frames in the domestic market is significant. The reason for the price difference is that the machining quality and cost of castings are closely related to the machine tool price. The high precision requirements for casting processing will complicate the machining process and lead to an increase in casting costs.
标准gb/t1031-1995规定了铸件表面粗糙度的评定参数及其数值。一般是采用轮廓算术偏差值检测铸件表面粗糙度，常见加工方法一般能达到的表面粗糙度值。一般情况下，铸件表面越光滑，使用性能 越好，寿命长，但制造成本也会相应增加。机床铸件开箱后必须进行热时效处理，消除内应力，使铸件结构稳定，性能好。之后再进行粗、精加工。
The standard GB/T1031-1995 specifies the evaluation parameters and values for the surface roughness of castings. Generally, the contour arithmetic deviation value is used to detect the surface roughness of castings, which can be achieved by common machining methods. In general, the smoother the surface of the casting, the better its performance and longer its lifespan, but the manufacturing cost will also increase accordingly. After opening the machine tool castings, they must undergo heat aging treatment to eliminate internal stress and ensure stable structure and good performance of the castings. Afterwards, rough and fine machining will be carried out.