Three coordinate measuring machine application in the mould industry is quite widespread, it is a design, development, testing and statistical analysis of the modern intelligent tool, but also unparalleled quality mold technology guarantee an effective tool. Current mainly used three coordinates measuring machine with bridge type measuring machine, gantry measuring machine, horizontal arm type measuring machine and portable measuring machine. Measurement methods can be roughly divided into contact and non-contact. The current Metris LK measuring machine on the two technologies is now among the world top.

Mould core cavity and guide pin guide bush match if there is a deviation, can be achieved by three coordinate measuring machine to find deviation in order to correct. After the mold core cavity profile processing molding, many insert and local curved surface by electric pole on the electrical pulse shaping, thus electrode machining quality and the standard of surface quality becomes the key to the mold quality. Therefore, three coordinate measuring machine was used to measure the shape of the electrode is indispensable. Three coordinate measuring machine can be applied to 3 d digital analog input, will be finished on the mould and da related to location, size, shape tolerance, curve and curved surface are compared, and measuring the output graphical reports, intuitive clearly reflect the mold quality, thus forming a complete mold finished goods inspection report. In some mould used for a period of time appear wear should be revised, but without the original design data (i.e., d/a), can use the cross section method to collect the clouds, with the provided format output, after the probe radius compensation model, so as to achieve the repair effect of intact.

When some surface contour is neither arc nor a parabola, but some irregular surface, can use sludge or plaster crafting a curved surface as the bottom of embryo. And then using the three coordinate measuring machine to measure the various section on line, the characteristic line and the parting line, with the provided format output, after the probe radius compensation model, pliable curve in the process of modeling, to produce new mould design.

Three coordinate measuring machine, with its high precision high flexible and excellent digital capability, become a modern manufacturing especially mold industrial design, development, manufacture and quality assurance. I focus on discuss measuring machine for two important role of mold industry.

Firstly, Measuring machine can provide quality assurance for mould industry, is the best choice of mould manufacturing enterprise measurement and testing. Measuring machine work in dealing with different aspects of flexibility and high precision of themselves, make it become an arbitration. While provide size data for process control, measuring machine can provide incoming product inspection, calibration, customer quality certification of the machine tool, gauge inspection, processing and optimization of machine tool setting additional performance. Highly flexible three coordinate measuring machine can be configured in the workshop environment, and directly involved in the mold processing, assembly, test, each stage of the mould and provide the necessary testing feedback, to reduce the number of rework die and shorten the development cycle, to reduce mold manufacturing costs and production under control. 

Secondly, Measuring machine has the strong ability of reverse engineering, it is an ideal digital tools. Through different types of measuring head and the combination of different structure forms of measuring machine, able to quickly and accurately obtain the workpiece surface 3 d data and geometric features, for the mold design, sample copy, damaged mold repair particularly useful. In addition, the measuring machine also can equipped with contact and non-contact scanning probe, and use the PC - DMIS measurement software provides powerful scanning function, complete with free surface shape characteristics of the complex part of the CAD model to copy. Without any conversion, can be directly identify various CAD software and programming, thus greatly improving the efficiency of mould design.

In particular, in the area of mould manufacturing enterprise application measuring machine to complete the design and testing task, to pay close attention to the choice of measurement datum, the probe calibration and choice, the number of measuring point and measuring position of planning, the establishment of coordinate system, the influence of the environment, local geometric features, CNC control parameters such as the influence of various factors. Each of these factors, was enough to affect the measurement precision and efficiency.