The quality control of machining process is an important link to ensure product quality. In the whole processing process, the process and method of quality control determine the final quality level of the product. In the quality control of machining processes, commonly used methods and technologies include but are not limited to the following:

1. Process document management: In the machining process, the process document is the most basic basis for work, including process documents, processing drawings, process cards, etc. By establishing a complete process document management system, we can ensure that each process is operated in accordance with the correct process flow, so as to avoid product quality problems caused by non-standard process flow.

2. Process parameter control: In the process of machining, the control of various parameters is the key to ensure product quality. Including the cutting speed of the tool, feed speed, cutting depth and other parameters of the control, can be achieved through the CNC equipment to achieve accurate control of these parameters, improve the processing accuracy and surface quality of the product.

3. Equipment testing and calibration: Testing and calibration of machining equipment is an important link to ensure product accuracy and quality. For example, by using coordinate measuring instruments to detect the collimation and accuracy of processing equipment, timely correction of equipment to ensure the processing accuracy of products.

4. Online monitoring and testing: real-time online monitoring and testing of the machining process can find the problems in the processing in time, adjust and correct, and avoid the production of product quality problems. For example, in CNC machining, the sensor connected with the control system monitors the machining process in real time, controls the running track and speed of the tool, and ensures the accuracy of the product processing.

5. Reasonable inspection: The inspection of product quality is an important part of the final determination of product quality. Through the formulation of reasonable inspection standards and methods, comprehensive inspection of products can effectively find product quality problems, timely treatment and rectification, improve the product pass rate and customer satisfaction.

6. Statistical analysis: Through statistical analysis of process data and product quality data, the root cause of the problem is found to provide a basis for subsequent quality improvement. Through the establishment of data analysis model and quality management tools, comprehensive analysis and evaluation of product quality, timely discovery and solution of problems.

7. Quality management system: Establish a sound quality management system, strictly follow ISO and other international quality management standards, do a good job of process supervision and records, establish a quality traceability system, and achieve quality control throughout the process.

In addition to the above methods, the quality control of machining processes also needs to introduce new technologies and new methods to strengthen the control and improvement of product quality. In the future, with the continuous development and innovation of technology, the quality control of machining technology will be constantly updated and improved, bringing better economic benefits and social value to enterprises.