Quick, easy and accurate measurements of the geometry of numerically controlled industrial machines have always been problematic for several reasons. Achieving high accuracy usually means considerable complexity of measurements, long measurement time and not negligible cost of the device. In addition, because users are interested in different geometry parameters, many measuring instruments are usually needed. A kind of industrial standard for geometry tests over years became laser interferometer based instruments. They are very versatile and precise, but in most cases require qualified personnel. Mainly for this reason, a group of instruments based on the principles of beam positioning or short range sensors has been developed. In this article we present an innovative configuration of the laser interferometer in combination with a differential beam position sensor, which is able to provide much more complete data about the behaviour and geometry of the machine than competitive methods in a comparable or shorter time. Moreover, the data obtained in this measurement can be directly used to compensate not only for positioning errors but also for perpendicularity of the machine axis.

出于多种原因，对数控工业机械的几何形状进行快速，简便和准确的测量一直存在问题。实现高精度通常意味着相当大的测量复杂度，较长的测量时间以及不可忽略的设备成本。另外，由于用户对不同的几何参数感兴趣，因此通常需要许多测量仪器。多年来用于几何测试的一种工业标准已成为基于激光干涉仪的仪器。它们用途广泛且精确，但在大多数情况下需要合格的人员。出于这个原因，主要是基于光束定位或近程传感器的原理开发了一组仪器。在本文中，我们提出了一种创新的激光干涉仪与差动光束位置传感器的组合，与竞争对手的方法相比，它可以在可比较的时间内或更短的时间内提供有关机床性能和几何形状的更为完整的数据。此外，在该测量中获得的数据不仅可以补偿定位误差，还可以直接补偿机床轴的垂直度。