Posted by Sponsored Post Posted on 30 April 2024

Key Steps To Improve Quality Control In CNC Machining

In the plastic, and metalworking industry, computer numerical control (CNC) machines have become convenient precision machining tools. These are recognized for their high speed, and repeatability in part manufacturing. From producing small-scale prototypes to large-volume batches, these machines are vitally used for their precision and accuracy. Despite this, these machines are not perfect at all. Quality control remains an important tool to detect and prevent any defective outcome.

Selection of The Right Machining Technique

Efficient quality control starts with the appropriate selection of machining. You must know, that different CNC machines are built by different industries, and not all of them are built with the same capabilities. Selecting a specific precision machining for a specific task is crucial to getting desired parts specifications. Because a minor use of the wrong machine for a task can lead to increased errors, hence facilities must be highly selective. The complexity of a product is directly linked to the sophistication of the required machine.

For simpler design parts specifications, usually, 3-axis machines are used commonly. But if you are dealing with a more complex machine, it’s advisable to use the four or even five-axis machine for more intricate details. The additional axes always give the machine greater precision helping the machine avoid errors.

Facilities must not specifically rely on four or five-axis machines for work because of their effectiveness, they must strike a balance, and you must know the kind of work you are doing before choosing any CNC machine for the work.

Inspection of Raw Material Is Crucial

It’s nearly impossible to recoup expenses if faults and inaccuracies are discovered after the machine has been used for production but when you carry out meticulous and proper checks of your machine before production, a lot of errors and unnecessary waste can be cut down.

Quality control is usually misunderstood to be done at the end of the manufacturing process and a lot of people do that, but it’s important to know that when you start your quality control from the get-go process, it helps in minimizing a lot of risks and help your CNC machine improve.

Quality control must start from the beginning of the process in ensuring the raw materials are okay to be used, the machines are working properly, the processing procedures are in order, etc. When quality control measures are integrated from the get-go process, it greatly reduces a lot of waste and errors that you might have discovered at the end of the process.

Operators can avoid this blunder by double-checking the quality of the raw materials before putting them to use, and examining materials for flaws like fractures, and weak spots helps workers get the most out of their CNC machine.

Seek Certified Vendors, When Outsourcing

Although, not all facilities perform their own CNC machine in-house, however, Quality control is still important. To ensure high-quality control and outsource CNC operations, companies should look for vendors with the right certification, although certification varies by industry, one that at least complies with ISO 9001, a general quality management certification is advisable.

Manufacturers can also look for additional quality certifications like ISO 13485 for example, to demonstrate compliance for medical-safe products making it important for the healthcare sector. ISO 16949 is quality validated for automotive manufacturing parts.

These certifications don’t mean that the vendors will prevent 100% possible errors; they are a pointer to a high reduction of risk. You must also know that you need high standards to acquire this certification.

Ensuring Compliance With Regulatory Standards

One of the important aspects of quality control is ensuring that the operation of CNC machines complies with the rules and regulations of the industry that manufactured the machines. It’s an important part that can not be neglected.

In ensuring the right maintenance and usage of a machine, only the manufacturer can tell you how to achieve that, and it’s simple, following the rules and regulations in the machine’s manual. Ensuring compliance with the industries’ rules and regulations helps greatly in improving the quality control of the machine.

Use multiple quality Control Methods: Every quality control method has its unique strengths and weaknesses, It’s always difficult for one process to detect every error that occurs during the production process,  hence facilities can use multiple CNC quality control methods to ensure mistakes are missed by one process won’t pass further down the line. However, using multiple processes can pose minimal risk to the CNC machining process. But, it can create bottlenecks, as it’s difficult for manufacturers to implement every process. In general, facilities can enact one process at a time. For instance, one check on material, one in-process, and lastly, one check on end-use machined part is sufficient for quality control. 


However, CNC machining has become an indispensable tools for manufacturing industries. But these are still not perfect. An improved and enhanced precision machining quality control measure will greatly reduce risk, unnecessary waste, and errors while simultaneously producing high-quality products. It also helps businesses to cut down costs and improve their standards in the minds of their customers. The reverse can be attributed to ineffective quality control. By following these steps, you can greatly improve the efficiency of the quality control of your CNC machine.

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