CNC Machining and CNC Machine Tools

Quality is produced, not tested

OEM/ODM manufacturing manufacture a axis CNC

The topic of whether quality is produced or inspected has always been the focus of debate in the industry: producers say that quality is inspected, and that inferior products enter the market because inspectors fail to check; inspectors say that quality is produced Yes, if the producer does not manufacture substandard products, there will be no inferior products in the market! Today, many companies, once there is a quality problem, push the responsibility to the quality department, thinking that this is the responsibility of the quality department, because many companies Companies have this misconception: OEM/ODM manufacturing manufacture a axis CNC

wrong view

  1. Allow a few defects, accidental defects are inevitable;
  2. Quality is the responsibility of the quality control department;
  3. Only pay attention to product inspection, and inspectors need to be responsible for solving defective products;
  4. When there is a problem, it is thought that it is the matter of the quality department.

I think many friends who do quality work have more or less felt this way. Often when writing a report, the quality department completes it alone, and other departments basically ignore it; the boss thinks that quality is not very important, research and development is very important, and making money is the most important thing. Therefore, the quality department has no place in the company, and it often speaks a few truths, and it should be flashed.

So, is the quality of the product produced or tested?

First, we need to analyze the relationship between first and last, active and passive. As we all know, the production of the product comes first, and the inspection comes later. In other words, the inspection can only be done if the product is produced by the master. OEM/ODM manufacturing manufacture a axis CNC

Obviously: production is active, inspection is passive. Before the concept of “product quality is produced, not inspected”, the early quality management was limited to quality inspection, which could only be used to check the quality of products after the fact. William Deming’s famous saying of quality pointed out that only in every link in the production process, the quality of the product can be guaranteed only if the production process and the requirements of the operation instructions are strictly followed. If process control is ignored and only inspection is used, it is impossible to guarantee product quality, because quality inspection can only eliminate defective and waste products, and cannot improve product quality. That is to say, the focus of quality control must not be placed on after-the-fact checks, but must be placed on the manufacturing stage, that is, the production process stage.

01Why do quality problems occur?

If the problems before product development are not dealt with properly, and the pass-through rate of mass production is too low, we hope to rely on quality to fight fires, and we want to rely on increasing the frequency of inspections to reduce defective or substandard products;

Add rework materials, substandard materials, but have not been tested and verified in advance, and there is no accurate knowledge of product quality fluctuations; OEM/ODM manufacturing manufacture a axis CNC

When the customer presses for the goods and puts pressure on it, the boss will speak according to his so-called actual experience, and implement special release for products that are not within the standard range, resulting in product problems;
The industry has improved the quality standards of its products, and the company still produces according to the original standards;

There are non-artificial quality problems in the production process, but they are not within the detection frequency range, etc…

02The real case of quality
Case number one

A certain auto parts, using ABS (750SQ) produced by a company, after using 3.4 tons, found that the surface of the plastic parts made of this raw material has black spots, resulting in unqualified products and huge losses.

Case 2

A company produces white film for milk film. All the test items are qualified, so the method leaves the factory. However, when the film manufacturer uses it, he finds that the masterbatch tastes unpleasant, and later complains. In the end, orders of several hundred tons were turned yellow because of such a quality problem. Fortunately, the user did not produce the film, otherwise the consequences would be really unimaginable. OEM/ODM manufacturing manufacture a axis CNC

Case 3

For the engineering masterbatch produced by a company, due to the lack of strict color control, the plastic parts produced by the company have a color difference, so that customers no longer use the company’s plastic products.

Case 4
Due to the lack of strict control of plastic moisture, various bubbles appeared in the plastic during the use of plastic by plastic manufacturers, resulting in a large number of substandard products. Finally, dozens of tons of plastic were returned and compensated for the losses.

It is not uncommon for cases of plastic to appear quality. If the quality department should take the blame for these situations, it would be really unfair.

Every link of the quality management system requires quality control, which obviously cannot be fully undertaken by the quality inspection department or the quality management department, and must be implemented by the personnel in the best position. For example, it is easy to find quality problems in the production process of some products, but it is difficult to find them in the inspection process. At this time, the production operators obviously know more about the quality problems than the quality inspectors. If the operators do not actively control the quality, Only relying on quality inspectors to check, it is difficult to fundamentally guarantee product quality. OEM/ODM manufacturing manufacture a axis CNC

03How to comprehensively control product quality

The product is basically positioned at the design stage, and then the quality is guaranteed by purchasing, manufacturing, packaging, and transportation. If these links are well controlled, the quality will naturally be well controlled. Therefore, product quality is achieved in the design and production process, and quality is achieved through process management. How to control product quality:

Build quality awareness

All employees must realize that: if the quality of the product is not good, there will be no market for the product, and if there is no market for the product, the enterprise will lose its source of profit. After a long time, the enterprise will go bankrupt, and the employees will lose their jobs. Of course, for the company, even if the product market is good, it must “be prepared for danger in times of peace”, improve product quality, and create a better corporate reputation. As the saying goes: “If you are in full bloom, the breeze will come naturally”. OEM/ODM manufacturing manufacture a axis CNC

Customer-centric

Everything is customer-centric, regards itself as a customer, regards itself as the operator of the next process, and regards itself as the consumer of the product. In this way, we will consciously do a good job at work, and everyone will do a good job, and the quality of the product will be guaranteed. If we cut corners at work, it will endanger our own vital interests.

Build awareness of quality prevention

“The quality of the product is produced and designed, not by inspection. We must get things done right the first time.” This is not a slogan, but it reflects the preventive nature of product quality. Without starting at the source, it will be difficult to control the quality of the product. OEM/ODM manufacturing manufacture a axis CNC

Even if a lot of inspection manpower is invested in the production to check, the cost of the product will be greatly increased due to a large number of defective products or even waste products that are not controlled from the source during production. Moreover, the quality problems of some products may not be found and compensated from the subsequent process, which requires us to do things well in the first time to prevent the occurrence of quality problems.

Establish quality awareness of procedures

Quality management is the whole process, the whole company, and the work between each process and the company’s departments must be orderly and effective. All quality management personnel and operators are required to strictly follow the procedures. If the procedures are not followed The chances of work going wrong increase, and the quality of the product cannot be guaranteed. OEM/ODM manufacturing manufacture a axis CNC

Establish a sense of responsibility for quality
80% of the quality problems come from the management, while only 20% of the problems originate from the employees. That is to say, the defects controllable by the manager account for about 80%, and the defects controllable by the operator are generally less than 20%. When managers improve their management level, they must also make operators understand the following four points:

  1. The operator knows how and why he does it;
  2. The operator knows whether the products he produces meet the requirements of the specification;
  3. The operator knows what will happen if the product he produces does not meet the specifications;
  4. The operator has the ability to handle abnormal situations correctly.

If the above four points have been satisfied and the material conditions such as equipment, tooling, testing and materials in production are available and the fault still occurs, it is considered to be a defect that is controllable by the operator;

If any of the above four points cannot be satisfied or the material conditions such as equipment, tooling, testing and materials in production are not available and a malfunction occurs, it is the responsibility of the management personnel. Only by understanding the responsibility of quality problems can we aim to improve the problem and improve the quality.

Establish a sense of continuous delivery of quality
Quality is not the best, only better; quality improvement is a continuous and continuous improvement process, which follows the PDCA model. OEM/ODM manufacturing manufacture a axis CNC

The PDCA mode can be briefly described as follows:
P-plan: According to the requirements of the product, develop an improvement plan;
D—implementation: the implementation plan;
C—Inspection: Inspect the process and product according to product requirements;
A—Disposal: Take measures to continuously improve product quality.

Only in this way, our product quality will continue to rise, and only in this way will we continue to improve quality and innovation, and we will continue to win the market.

Establish quality cost awareness

(That is, quality standard awareness) Guaranteeing quality and pursuing profit is the eternal goal of the enterprise. If an enterprise wants to develop, it has to pay attention to the cost of production. However, the cost is closely related to the quality. If the quality is well done, the cost of the product can be minimized. It will remain high, and even push the enterprise to a corner. OEM/ODM manufacturing manufacture a axis CNC

The reason for the decline of many enterprises is not because there is no source of customers and no orders, but because the internal management of the enterprise is not good, the cost cannot be reduced, and it is unable to participate in the market competition. Enterprises should take a warning.

However, the stricter the quality is not the more beneficial to the enterprise. On the contrary, excessive improvement of product quality will result in excess quality, which will also increase production costs. Therefore, during production, we require all processes and links to be strictly in accordance with customer standards, so that we can minimize costs and improve market competitiveness.

Establish quality education awareness

With the development of the times, the concept of quality management is constantly updated and needs to be learned. Successful enterprises in the 21st century will belong to those learning and growing enterprises. Strengthening internal training and improving the work innovation ability of all employees will make the enterprise prosperous and change with each passing day. Therefore, “quality starts with education and ends with education.” Facts have proved that those successful companies strictly produce products according to the concept of “products are produced”. They strictly control every link of product production to ensure that every The quality of the links is correct, and the links are closely linked, so that the products produced are qualified and good products that can withstand the test of the market.

Details determine success or failure, and attitude determines everything. Only by establishing a strong sense of quality, striving for excellence in quality, and tirelessly pursuing, can we do a good job in quality, elevate quality to a new height, and go higher and farther. OEM/ODM manufacturing manufacture a axis CNC

a axis CNC
OEM/ODM manufacturing manufacture a axis CNC

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