About Determining the Error Budget of a Miniaturized, Modular Machine Tool System for Micro Production

Abstract

Since micro products have become smaller, the requirements concerning precision and accuracy for producing machine tools to manufacture such small parts increased. Consequently, each component of a machine tool needs to conform to these requirements. A flexure-based feed unit, a clamping system and mechanical couplings are briefly presented. These components can quickly be reconfigured, which allows for a new modular micro machine tool system. Each component incorporates individual precision and accuracy leading to an overall error budget for a machine tool system. This is methodically addressed in the contribution.

A function integrated and intelligent mechanical interface for small modular machine tools

“…This procedure was repeated N = 30 times. The maximum translatory error has a mean value of = 0.044 m with a standard deviation of = 0.040 m. The maximum rotatory error is = 61.92 arc s with a standard deviation of = 0.60 arc s ( [11,18]). The detailed standard deviations are described in Table 1.…”

“…The interface is used in two sizes (with 44 N and 76 N magnetic preload) for the coupling of various modules to a complete micro machine tool. Here, the configuration consists of a flexure-based feed unit [17], an elastic deformation clamping device [11] and a high speed spindle [12]. The measurement data for precision and accuracy of the mechanical prototype underlines the prior machining results.…”