A coordinate-measuring machine, also known as a CMM, is a specialized piece of equipment common in high-precision manufacturing. It uses coordinate technology to measure and replicate the dimensions of particular objects.
CMMs are a lot more accurate than regular measurement gauges. This characteristic makes them the equipment of choice for quality assurance in certain industries, like aerospace, defense, and medical manufacturing.
Despite being a powerful piece of equipment and the most versatile measuring tool in the metrology industry, CMMs can also be quite delicate. They require the right environment and proper maintenance practices to maintain accuracy and reliability.
The Importance of Proper CMM Maintenance
It’s essential to clean and inspect each part of your machine to ensure it stays efficient and accurate. Preventative maintenance ensures that your CMM remains accurate and performs at its best. It also improves your machine’s longevity.
Without proper CMM maintenance, you could risk damaging your CMM. Repairs would involve operational delays and additional costs.
CMM Preventative Maintenance Tips
Preventative maintenance practices are ones your team could do by yourselves. It’s best to schedule regular maintenance checks for your CMM daily, weekly, monthly, or quarterly. These checks can alert you immediately to possible problems with your CMM.
Remove dust and dirt regularly
Clean and well-maintained air bearings ensure your CMM works as it should. These frictionless and stable bearings help ensure accuracy and efficiency. Dust and dirt can clog your machine’s air bearings, affecting its overall performance.
Aside from your machine’s air bearings, dust could also get into other surfaces and crevices. These tiny particles could affect your machine’s accuracy.
Handle Stylus Tips Properly
The stylus is the tip that makes contact with the object you want to measure with your CMM. Despite this significant role, the stylus can be fragile and require careful handling. Too much force could cause it to bend or break.
Clean your stylus with a cleaning agent and a lint-free cloth. Make sure to remove any residue from workplace materials.
Ensure Good Air Quality
Most CMMs use air bearings, and good air quality is essential to keep them running smoothly. Various air quality issues could affect machine performance and even burn out machine motors.
For air quality maintenance, ask and address the following questions:
- Do the lines have condensation, oil, or other contaminants?
- Is the airflow constant?
- Are you using the proper pressure?
When To Call a Professional
Most preventative maintenance practices are simple enough to be performed internally. However, some issues require professional attention. You can also conduct regular professional maintenance checks to ensure you don’t miss anything.
Below are some procedures that require professional assistance. Many CMM suppliers also offer maintenance services alongside their machinery.
Conducting CMM Training
CMMs are highly specialized pieces of equipment. To handle them properly, your staff needs professional training.
Training courses allow you to get trained by CMM experts on the tools and knowledge necessary within your industry. Regular training sessions also help keep you updated on industry trends and standards.
Sensor Malfunctions
CMM sensors are critical to your machine’s speed and accuracy. They should be professionally inspected and calibrated annually.
Routine sensor maintenance can significantly improve the efficiency and accuracy of your machine. CMM sensors include the following:
- Scanning probe
- Single point laser
- Line laser
- Electronic touch trigger probe
- Video camera
Faulty Bearings
Neglected air bearings could cause them to falter in their accuracy and stability. Properly maintained air bearings ensure a smooth, stable, and accurate measurement process.
A professional metrology company can thoroughly inspect your air bearings to prevent further machine damage.
A CMM is a significant investment for any business. Good maintenance practices help your machine last and perform at its best, thus making the most out of this investment.
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