When drawing up design plans, all manner of tolerances are specified on the drawings, yet in practice, the parts simply cannot be produced to those specifications. Is it that the design precision is too high, or that manufacturing standards are too low? How can we reconcile the drawings with the actual machining process? After reading the following, you might just get the hang of it.

Machining error is the degree of deviation between the actual geometric parameters (geometric dimensions, geometric shape and mutual position) and the ideal geometric parameters of a machined part.

Machining errors refer to the degree of deviation between the actual geometric parameters (geometric dimensions, geometric shape and relative positions) of a part after machining and its ideal geometric parameters. The degree to which the actual geometric parameters of a part after machining conform to its ideal geometric parameters is known as machining accuracy. The smaller the machining error,