Important Aspects of CNC Machining Quality Inspection

Quality control is an important aspect of every industry - whether it's a product, part, process, tool or machine. Today, manufacturers are choosing CNC machining over traditional machining which offers several advantages. Although CNC machining ensures higher productivity and fewer errors than conventional machining, quality inspection is still an integral part of the manufacturing process.

 

Quality control and inspections are carried out at all stages of processing. Also, quality assurance is an important aspect here, and it differs from quality control. Quality assurance refers to the process of conducting quality inspections set by organizations and authorized bodies. This also includes related documentation. Therefore, we can say that quality assurance is the establishment of processes and documents, whereas quality control is implemented periodically or as required. This article discusses the importance of such quality checks and methods for CNC machining.

 

Product Life Cycle Stages and Quality Inspection Models

 

In any product development process, process monitoring and inspection are equally important.

 

Inspections are performed at three levels, as described below:

 

Machine Tool Accuracy Test: In this mode, the alignment and motion accuracy of the machine tool are checked. Check various other parameters, such as the orientation of the spindle, bracket, axis, etc. The spindle should be perpendicular to the table. The angle and curvature of the shaft must be accurate. Check the linear axis.

 

Part or Product Test: In this mode, part size and position are checked. This also includes checking parameters such as positioning, surface finish and shape. Dimensional and geometric tolerances are also checked upon request or application.

 

Process Monitoring and Control: This includes examining process steps at each stage to avoid process-related errors that could lead to defective products or unnecessary manufacturing delays. There are different stages in the product life cycle, starting from ideation or conceptualization. Then comes design, feasibility study, analysis, pilot production phase, testing, mass production, etc. Quality checking here involves all levels.

 

Parameters to be checked during CNC machining quality inspection.

 

Here are some parameters that you must check during the quality inspection of CNC machine tools:

 

• When using CNC machine tools to produce a part, the purpose of rapid prototyping must be achieved. Make sure your machine can make the products and prototypes you need.

 

• Aim for tight tolerances and ensure your machine delivers the precision you need with minimal room for error.

 

• Check the spindle on the CNC machine

 

• Make sure the machine is accurately calibrated; they may lose it over time.

 

• If you do not have a well-equipped QC staff, please seek a professional testing service provider.

 

• Record the inspection results and record them for future reference.

 

• Choose an ISO certification level; this provides a certain level of credibility.

 

• If you outsource this function, check the service provider's trustworthiness and maintain open communication with them.

 

• If you lease or purchase this equipment at your factory, be sure to check all the features of the machine and claim the warranty.