How to purchase a suitable three-dimensional measuring machine for oneself?

If a coordinate measuring machine is needed in your work, how can you choose one with good quality? The first thing to clarify is which model and specification of the CMM to purchase. There are three basic types: vertical, horizontal arm, and portable. A vertical coordinate measuring machine installs a measuring head on the vertical arm. The precision of this type of measuring machine is higher than that of a horizontal arm measuring machine. Due to the stronger construction of the stacking chain and the fewer moving components, they have stronger stiffness and reliability. Vertical coordinate measuring machines include various specifications, capable of measuring from small transmission gears to diesel engine casings, and even the casings of commercial service airports. The horizontal arm measuring machine installs the measuring head on the horizontal axis. They are generally used to inspect large workpieces, such as car bodies, with a moderate level of precision.



The portable measuring machine simplifies the measurement of workpieces and components that cannot be moved to the measuring machine. The portable measuring machine can be installed on top or even inside the workpieces or components, allowing for measurement of indoor space and allowing customers to measure on site during installation, thereby saving time for moving, transporting, and measuring individual workpieces. In order to maintain the firmness of the coordinate measuring machine, during the design process, the quality and stiffness of the structure are generally improved by increasing the cross-sectional area of the structural components, increasing the spacing between air bearings, increasing the drive energy of the motor, and optimizing the selection of raw materials based on net weight and temperature performance. This improves measurement precision, repeatability, measurement rate, and instantaneous speed. This basic principle is also applied to some horizontal arm production workshop coordinate measuring machines, which integrate the coordination ability of the horizontal arm measuring machine with the high-precision design of the vertical type. The orientation of the horizontal arm measurement makes the three coordinate measuring machine more effective in matching the processing equipment of the horizontal machine tool.



They are particularly suitable for measuring large gearboxes and diesel engine casings that require high-precision measurements. The addition of a rotating workbench makes it highly possible to have four axes, and the arm configuration can also be completed, allowing for measurement of each orientation of the workpiece. The horizontal arm is equipped with a relatively easy way to load, unload, and transport workpieces. Small and medium-sized, workshop shaped horizontal arm coordinate measuring machines are suitable for the entire process of high-speed production and manufacturing application.