It is extremely important to know the dimensions and geometric measurements for manufacturing prototypes or actual products, and errors in dimension measurement can jeopardize the entire production process. Hence, to prevent this, you should use an extremely precise measuring machine, i.e., a Coordinate Measuring Machine (CMM).
CMM machine is extremely essential during any manufacturing process as it maintains a smooth and continuous production flow. This article has explained what a CMM machine is and how a CMM machine works.
What is a CMM Machine?
High-quality manufacturing processes need to have accurate physical and geometric dimensions. Two methods are used popularly for this. The first is using conventional methods that require using measuring hand tools or optical comparators. However, these tools require expertise and are not always accurate. This is where CMM machines are beneficial, especially those provided by top CMM machine manufacturers.
A coordinate measuring machine (CMM) is a tool that measures the dimensions of a tool or machine parts using coordinate technology. These machines can accurately measure the height, depth, and width of the X, Y, and Z-axis. If you have an advanced CMM machine, then you can even measure the target and store the measured data securely.
What is the need for CMM Machine?
Now that you know what a CMM machine is, it’s time to learn why you may need it. You can find the best machines at your nearest CMM machine suppliers.
CMM machines today are relevant to every manufacturing process. The reason is the significant disparity between conventional measuring methods and advanced CMM machine methods.
The conventional measuring tools have several limitations. For instance, a person with training, practice, and expertise in using traditional measuring tools can use the tools most effectively. If the operator is not up to date with their knowledge and expertise, this often leads to errors that can disrupt the entire manufacturing process.
Another compelling reason for using CMM machines is the level of sophistication they bring to the manufacturing process.
In short, you need a CMM machine if you want to save precious time, money, and effort otherwise spent on constantly improving the manufacturing process.
How does CMM Machine work?
There are basically two ways to use a CMM machine. The first type uses touch probes through a contact mechanism to measure the tool or part of the product. The second type uses either a camera or a laser beam for taking the measurements. The type of CMM machine also decides the size of parts or machines that can be accurately measured. Some machines, such as the automotive CMM machines, are designed to measure parts larger than 10 meters.
A CMM machine does two main things. It measures the object’s geometry and dimensions. It also tests the object to determine if it is the same as the corrected design. The following steps explain how CMM machine works:
Step 1
The object to be measured is placed on the base of the CMM machine. This measurement site is made from dense, stable, and rigid material, which ensures measurement accuracy. A movable gantry above the base plate has a touching probe attached to it.
Step 2
The CMM machine controls the gantry to direct the touching probe along the X, Y and Z-axis. This way, it can measure and replicate all object facets in focus.
The probe sends signals to the computer, which maps out the dimensions accurately. This process is repeated for every facet of the object till the entire dimensions of the object as precisely measured and recorded.
Step 3
The next step is the analysis state. The information generated by the probe is analyzed before digitally reconstructing the features.
CMM machines that use camera or laser guidance also use the same mechanism to measure dimensions.
Conclusion
A coordinate measuring machine, or CMM machine, is extremely useful in measuring the dimensions of objects manufactured with extreme precision. This stage is critical for any productions process to ensure top quality and accurate design for any product.
