Share | How to apply the quality trilogy of pre, during, and post in practice?

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King Wen of Wei asked the renowned physician Bian Que, \"Your three brothers are all skilled in medicine. Which one of them is the best?" ” Bian Que replied, “The eldest brother is the best, the middle brother is next, and I am the worst.” ” King Wen asked again, “Then why are you the most famous?” ” Bian Que replied, “The eldest brother treats diseases by addressing them before they occur.” Since most people did not know that he could eliminate the cause of the disease in advance, his fame could not spread ； Treating an illness early on is treating it when it first appears. Most people thought he could only treat minor illnesses, so his reputation was limited to his hometown. And I treat diseases when they are already severe. Ordinary people saw me performing major procedures such as inserting needles into meridians to draw blood and applying medicines to the skin, so they thought I was highly skilled as a doctor, and my reputation spread throughout the country as a result. ” From experience in management, control after an event is not as effective as control during the event, and control during the event is not as effective as control beforehand. Unfortunately, most business owners fail to realize this; they only seek to make amends once wrong decisions have caused significant losses, often to no avail. Considering the actual situation of the company, how should we control quality? I. Preventive control: \"Ideal design, dreamy craftsmanship\" is a common problem among many designers. Quality is achieved through design, not through inspection. Many companies, due to a shallow understanding of quality management, equate it with quality inspection, believing that quality management merely involves simple \"quality checks\" on the products that have already been manufactured and the handling of defective items, while neglecting preventive quality control. Process design is the foundational aspect of design in the manufacturing industry; proper control over the design phase is essential for ensuring quality. Based on the actual conditions of the company, process engineers should pay attention to the following steps: 1. Understand the drawings thoroughly, communicate with the client in a timely manner, and avoid giving ambiguous or incorrect dimensions ； 2. Identify critical dimensions and key processes, and propose necessary process and tooling safeguards ； 3. Take into account the company’s actual conditions: factors such as personnel, equipment, environment, and inspection are considered to develop a manufacturing method that best suits the company’s situation ； 4. Considering the product’s characteristics, provide necessary measures to prevent unnecessary losses caused by human factors ； 5. Risk identification and prevention. II. In-process control: Process control refers to the actual implementation of plans. Chinese companies often have good plans but poor execution; the whole society emphasizes the need to bring things to fruition, which shows that whether implementation takes place is directly related to the success or failure of quality. 1. Strictly implement the process specifications to ensure process quality. Quality management in the manufacturing process involves keeping all factors that affect product quality under stable control. Therefore, all processes must strictly follow the technical specifications to ensure process quality, and illegal operations are prohibited. 2. Ensure good process quality control. Each step in the manufacturing process is a fundamental element in determining product quality. To guarantee product quality and prevent the occurrence of defective products, it is essential to implement effective process quality control. 3. Conduct thorough inspections: The company designates inspectors to carry out random checks, focusing on key products and critical dimensions, and performs inspections at regular intervals to prevent a large number of defects from arising. 4. Communicate in a timely manner. Processes are not static; process engineers and operators should enhance communication, sharing any good ideas or identifying process issues promptly to continuously improve the quality of those processes. III. Post-production inspection and quality control: By the time a product reaches the inspection stage, it can no longer be changed; what needs to be prevented is the rejection of entire batches. Inspection is an important means of quality control in the manufacturing process, and it represents an essential step. 1. Ensure that the measuring tools are standardized and within their valid period of use; work with process engineers and supervisors to determine whether the tools required for inspection should be provided by the customer or company-owned, in order to avoid rejections due to inconsistent standards ； 2. Continuously improve the skill development of inspectors; no matter how good the equipment is, it still requires people to operate it. By constantly raising their skill levels, inspection errors can be reduced ； 3. Strengthen the management of non-conforming products; the management of such products is an element of an enterprise’s quality system. The purpose of managing non-conforming products is, of course, to take timely action on them, such as rework, repair, downgrading, or disposal. But more importantly, it is to identify promptly the systemic factors that lead to the occurrence of non-conforming products during the manufacturing process, so that appropriate measures can be taken to restore control over that manufacturing process. Therefore, the management of defective products requires adhering to three principles of \"not letting go\": not letting go until the responsibility and causes are identified, not letting go until preventive measures are found, and not letting go until the involved parties have received education. Distinguish the sequence of quality work: preventive control in advance, in-process control during execution, and final inspection for verification. Quality work is an ongoing process