What is the coordinate measuring machine?
The measuring machine is a computer -controlled digitizer of three -dimensional geometric data. The machine can control the search formulas similar to the free -style grid, where simple shape outlines are examined by free selection of data points. The machine is also the basis for some automated inspection systems.
The machine usually consists of a flat table on which the sample is located. The stylus or pointer is connected to the head that can rotate in any direction. The weight of the head is balanced, so it is easy to handle. In some tables, the head moves on the arm that travels along the length of the table. In smaller applications, the head can move on supports across the test table or a goose neck mechanism. The size of the samples and the degree of required accuracy determines the selection of the machine.
If you want to notice the geometry of the sample, the stylus is located at the selected location. The outlines of the piece are determined by the stylus of lasting altitude when watching a straightforward pattern of the grid in X and Y directions. In jThe more ednut version of the coordinate measuring machine touches the operator a number of points on the object and data x, y, Z are recorded in the computer memory.
After completing the data accumulation step, the computer within the measuring measuring machine maps the three -dimensional model model. The model can be based on a vector if sufficient data have been collected. Otherwise, you can create a map of connecting points samples. Data can usually be exported for other applications that use geometric data, such as utility design programs or certain software for surgical planning. Data can be fed to graphic design programs that create visual models that can be displayed and rotated in space.
The second common use of the coordinate measuring machine, associated with the optical system, is to check the parts with a fixed tolerance of quality control and for the production of objects such as tools, semiconductor patterns and foldé mechanical parts. Conversely, the above procedure is programmed into the machine specifications of the part to be explored. The data is entered in such a way that the optical measuring machine of the coordinates can find a home location, such as the intersection of two edges or the center of a circular cutout.
This use requires knowledge of how parts are specified and tolerance is determined. If any possible dimension is determined as an accurate measurement, there is no room for production deviations. The designer must take into account the capabilities of the machines that do this part and the additive effects of the stacked tolerance. After doing so, a properly prepared plan specifies the dimensions, tolerance and data for the programmer a coordinating machine to follow.