# The Off-Line Simulation on Measuring through Software PC-DMIS CAD++ V4.3
## 1 Introduction
### The State-of-the-Art
[17] reported that, currently, most 3D measuring software offers functions for off-line coordinate measuring machine (CMM) programming. Several software solutions allow the simulation of CMM and other elements involved in the measurement process, such as a human operator or an automated system for loading and unloading the measured parts. In research by [PERSON] et al. [18], a new approach to measurement methodology for a vision integrated coordinate measuring system was developed and demonstrated. The vision coordinate measurement system features the integrated use of a high-precision coordinate measuring machine (CMM), a vision system, advanced computing software and related electronics. It has potential usage across a range of producing issues with a big impact on metrology, control and reverse engineering. [PERSON] et al. [19] presented the view that fast and accurate measurement in the process has recently become standard in product cycles, especially in the production of parts having 3D contoured shapes. As a result, the ability to analyse large amounts of dimensional data requires that today's coordinate measuring machines (CMMs) take advantage of their extreme functionality. [PERSON] [20] and [PERSON] et al. [21] defined Coordinate Measuring Machines (CMMs) in a very similar way, as the universal machines that are often used to measure geometrical dimensions and shapes of rather complex products in production. [PERSON] et al. [22] pointed out that measuring instruments should be intelligent, accurate, and multifunctional and evolve in a multidirectional, scientific and proportionate manner; reliable evaluation of the measurement uncertainty of precision instruments is also becoming increasingly difficult, and the measurement uncertainty of coordinate measuring machines (CMMs) is one of the typical problems. The study performed by [PERSON] et al. [23] proposes a method for quick production of the deformed evaluation image using a whole-space tabulation method. Another study conducted by [PERSON] and [PERSON] [24] represents the development of a hybrid measuring system integrated into a machining centre to perform a possible intermittent measurement of the work piece. The work conducted by [PERSON] [25] mainly focuses on the issue of measuring tip contact with the measured object, and it is based on the author's original method for the identification of a probing system: contact probe errors with the use of a circular standard together with the system of software separation of components. [PERSON] et al. [26] stated that coordinate measuring machines are today a necessary tool of quality management systems, as they allow quick verification of the conformity of the object with the geometric specifications contained in the technical documentation. Since coordinate measuring machines are a part of every modern production plant, the paper is a response to the current situation, and its development required not only knowledge of the coordinate measuring machine and related software, but also the knowledge of mechanical metrology, computer technology, reading and drawing preparation, documentation and parametric modelling in the CAD (computer-aided design) system.