When CNC manufactures all actual prototypes and custom machined parts, the most important thing to pay attention to is the geometric characteristics and manufacturing dimensions of the parts, because of whether the custom machined parts are successfully manufactured. Manual measurement often fails to notice the difference of a few tenths of a millimeter or even a few microns, which is an important part of affecting production for high-precision customized parts. In order to eliminate this concern, people invented a high tolerance measuring instrument in continuous exploration.
In order to make it easier for everyone to understand the height tolerance detection machine, this article takes the three-coordinate measuring machine as an example: understand how the coordinate measuring machine (CMM) machine performs measurement?
There are two general types: 1. Contact mechanism (contact probe) to measure custom processed parts 2. Use other methods, such as camera or laser as the measuring mechanism.
What is a coordinate measuring machine (CMM) machine?
A coordinate measuring machine (CMM) is usually composed of software, probes, granite tables, lamps, air compressors and dryers. The full name of CMM is: coordinate (Coordinate), measurement (Measurement), machine (Machine). It is a measuring instrument with measurement function composed of three motion rails according to the Cartesian coordinate system. It is called a coordinate measuring machine and consists of a computer. To analyze and process the data of customized processing parts (which can also be controlled by a computer to achieve fully automatic measurement), it is a highly complex measurement equipment.
Why do I need a coordinate measuring machine (CMM) machine?
Before answering this question, we should first know what its purpose is? Why is the manufacturing process of custom machined parts in the manufacturing industry related to it? We can first understand the difference between traditional measurement methods and new measurement methods.
Traditional measurement method: It requires professional operators to check the experience and skills of custom machined parts. If there is no inspection experience, it may lead to inaccurate inspection of custom machined parts.
New method of measurement: The coordinate measuring machine (CMM) can be used to obtain the measurement data of the custom-made parts more quickly. No matter the custom-made parts are complicated or easy, the measured values ??are very accurate.
Therefore, coordinate measuring machine (CMM) machines are better than traditional methods, improving the measurement efficiency of custom-made parts, reducing measurement errors, and improving the productivity of custom-made parts, as well as measurement speed and measurement accuracy.
Advantages and disadvantages of coordinate measuring machine (CMM) machines
Advantages: CMM machines are an important part of the production process of custom machined parts. Even so, there are corresponding advantages and disadvantages.
Advantage:
1. The versatility of multiple probes and technologies
The CMM machine is compatible with many types of tools and components. The complexity of the custom machined parts has no effect, because the CMM machine will measure the custom machined parts.
2. Reduction of personnel costs
A CMM machine is a machine controlled by a computer. Therefore, the intervention of personnel is reduced, thereby reducing the errors of custom machining parts caused by operational errors and other problems.
3. Save time and money costs
The manufacturing of complex custom machined parts is becoming more and more common, and CMM machines are ideal for measuring their dimensions. CMM machines have become an indispensable part of the production process of custom machined parts due to their speed and precision. Reduce production costs and time.
4. Quality assurance
The method of three-coordinate measuring machine to detect the size of custom-made parts is different from the traditional machine measuring method. The coordinate measuring machine can digitally measure and analyze custom-made parts. In the process, it also provides other services such as dimensional analysis, CAD comparison, tool certification, and reverse engineering. This is an important process to ensure the quality of custom machined parts.
shortcoming:
1. The correct probe must be selected
Since CMM machines use different types of probes, choosing the correct probe depends largely on the size of the custom machined part, the required design, and the capabilities of the probe.
2. Soft parts may cause defects
For custom machined parts made of soft materials such as rubber and elastomers, the use of probes will cause the custom machined parts to collapse. This also causes measurement data errors.
3. The probe must touch the surface
Because each CMM machine has the same mechanism. In order for the probe to work, it must touch the surface of the part being tested, which has a great impact on fragile surfaces or fine custom-machined parts.
in conclusion
This article has taken you to understand what is a three-coordinate measuring machine (CMM) machine? The advantages and disadvantages of CMM machines, etc. It demonstrates the function of CMM machine, which is also an important standard for our CNC machining and inspection. While ensuring the quality of custom machined parts, we must also report that the accuracy of custom machined parts meets customer requirements. If you need to outsource, CNCMF China custom machined parts The manufacturer is your best choice.
For all orders at CNCMF, we can provide complete custom machining parts size reports and quality assurance according to customer requirements. The report will include the following: the number of custom machined parts, key dimensions, threads and tolerances, thickness and depth, the appearance of custom machined parts, etc. You are welcome to start a new project.