What is the ring in the man-machine-material-fa-ring, man-machine-material-fa-ring cause analysis bad

1. The understanding of the man-machine-physical ring is shown below: "man-machine-physical ring" refers to the five aspects of product quality abnormalities in the consideration of the cause: people: and product production-related human causes, operators, inspectors, technicians, physical condition, technical level, work responsibility and so on.

2. Machine: machines and tools, etc..

3. Problems that may occur in the production of the product equipment, such as tools, fixtures wear and tear, machine tool precision reduction.

4. Things: the quality of the materials used for processing.

5.4 method: the way of work, the method of operation.

6. Speed of action, program, installation position, sequence, etc.

7. Ring: working environment.

8. Lighting, noise, vibration, temperature, etc.