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Foshan Li Dexin Machinery Manufacturing Co., Ltd.
Foshan Li Dexin Machinery Manufacturing Co., Ltd.

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Foshan Li Dexin Machinery Manufacturing Co., Ltd.

Foshan Li Dexin Machinery Manufacturing Co., Ltd.

Specializing in the production of TCT circular saw blades, TCT band saw blades, finger joint knives, flying knives, various non-standard CNC grinding machine production lines

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★ Construction of woodworking tools (saw blades) product quality management system ★

  • Time of issue:2018-11-15 09:10

(Summary description)The construction of the quality management system for woodworking tools (saw blades) is the quality management of the entire production process of the product.

★ Construction of woodworking tools (saw blades) product quality management system ★

(Summary description)The construction of the quality management system for woodworking tools (saw blades) is the quality management of the entire production process of the product.

  • Time of issue:2018-11-15 09:10
The construction of the quality management system for woodworking tools (saw blades) is the quality management of the entire production process of the product. It involves the management of design, materials, equipment, technology, inspection, storage, packaging, and the quality of all employees. To produce a high quality product, pay attention to the following four aspects:
1) Good product design; (currently two product models: standard and non-standard)
2) high quality materials and suitable equipment;
3) mature production process;
4) Skilled production personnel.
Even if the above four requirements are guaranteed, in order to produce high-quality, high-qualification products, it is necessary to establish a quality assurance department (technical department) for overall quality management, and develop and implement a series of quality assurance measures.
        To establish a quality assurance department for woodworking tools (saw blades), the following points must be fulfilled: (This function is undertaken by the technical department in this company)
 
I. Quality Assurance Agency
In the current manufacturing industry, people often confuse or equate quality assurance departments with quality inspection departments. In fact, quality inspection is only one aspect of quality assurance work. The quality inspection department is usually an organization affiliated to the quality assurance department. The conceptual difference between the tasks of these two departments is that the main task of the quality assurance department is to continuously establish and adopt reasonable technical quality and work quality assurance measures and supervise their implementation to ensure the production of products with the required characteristics; the quality inspection department only By checking the quality of semi-finished and finished products, selecting qualified products, removing defective products and scrap products to ensure that the finished product meets the characteristics required for the design.
The person in charge of the quality assurance department is directly responsible to the director or the general manager of the company to ensure the independence of the work and is not interfered by any other personnel, so that it is really possible to determine the problem from the basis of quality assurance. When there is a quality problem in production, as long as it is seriously weighed, it is considered necessary to suspend production and the production planning department can directly issue a shutdown order. The decision should only be changed by the director or the general manager of the company.
 
Second, the main tasks of the quality assurance department are as follows:
1) Establish inspection points in each of the key processes of production. (QC of each station)
2) Prepare and provide guidelines for the procurement and acceptance of raw materials. (written by the technical department)
3) Formulate the eligibility criteria for the production quality of each process in the production process. (written by the technical department)
4) The technical department and the main person in charge of the production department jointly develop and verify the processing procedures and technical specifications.
5) The technical department and the production department jointly negotiate and formulate the technical training plan for the employees.
6) Before the production planner releases the production plan, the technical department shall formulate measures to eliminate possible production technical problems and quality problems in advance. (This item can only be realized in a mature production process, and the requirements of the technical department personnel are high)
7) Review the quality requirements specified in the user's products, whether they meet the quality specifications and whether the processing documents meet the process specifications and propose quality assurance measures accordingly. (This item can only be realized in a mature production process, and the requirements of the technical department personnel are high)
8) Establish procedural systems and institutions that identify, resolve, and prevent recurring erroneous production and process problems. (This department function can be performed by the technical department)
9) Monitor the implementation of each key process through its experimental work.
10) Develop search procedures for key information, including yield, non-performing rate, scrap rate; percentage of products returned by users and reasons for return; value of scrapped products; percentage of products completed on schedule and delivered on time; raw materials, key equipment Information on operations, operators, process specifications, etc.; quality issues and quality trends. (data can be provided by the production department)
11) The information found in the previous item should be notified to all employees. When product quality problems are discovered, it is necessary to promptly feedback the production planning department and urge them to improve as soon as possible.
12) Implement the responsibility for ensuring quality to every job person in the actual work.
 
Third, the main tasks of the quality inspection department
The main tasks of the quality inspection department are as follows:
1) Incoming inspection of major raw materials.
2) Quality inspection during production.
3) Finished product inspection.
 
Fourth, the management of documents and materials
Customers generally provide the following documents:
1) Technical standards for the product.
2) Photographic plates or floppy disks, etc.
3) Processing drawings and related instructions.
4) Electronic documents.
After receiving the above documents (electronic documents) from the customer, the technical department should carefully read and study these documents with the production planning department to check whether the documents are complete. Does it meet the production requirements, is the current production process equipment suitable? Are there any contradictions and errors in the documents? To clarify the user's quality requirements for the product, including minimum requirements and special requirements. If problems are found, they should be immediately negotiated with the customer. The results of the consultation should be recorded and included in the user's file. Only the problems discovered at this time can be easily solved. The manufacturer proposes to solve the problem, and the customer is the easiest to accept, and the loss may be minimal. In this phase, the technical department is generally in consultation with the customer.
 
Fifth, the release of woodworking tools (saw blades) production planning tasks
Once the customer documents are verified and agreed upon, the technical department shall prepare the production process card and the quality inspection station according to the process specification, and shall focus on the technical requirements and quality requirements of the customer's ordered products and whether the current materials, equipment, and mold fixtures are If there is any inconsistency and whether the current process specification needs to be changed, the change document should be decided to confirm the signature, and then the production planning department can produce according to the modified process specification and production process card.
The technical department shall pass the following set of documents to the production planning department for production:
1) production process card;
2) Processing drawings and instructions for related accessories;
3) Process technical specification amendment document; (If the production process is modified, this item must be added)
 
6. Quality management in the production process of woodworking tools (saw blades)
Quality management in the production process is a core part of quality management. Because high-quality products are produced through strict and reasonable processing using qualified raw materials, the inspection is only through inspection, selection of qualified products, and the removal of defective products and waste products. Good products are not checked out by inspection. The quality management in the production process mainly focuses on the following aspects.
1. Use qualified raw materials
The main raw materials used for production shall be inspected by the quality inspection department and shall be stamped with a seal or mark that passes the inspection. Raw materials that have not been inspected by the quality inspection department are not allowed to enter the production area. For some important raw materials, such as imported alloys, the imported alloys should be unloaded according to the processing order. The imported alloys after the blanking should be registered according to the table for investigation. Raw materials that fail to pass the inspection shall be filled out with a rejection form, the rejected single sheet shall be attached to the packaging of the batch of materials, and the packaging shall be moved to the isolation area for storage.
2. Quality inspection during production
In the production process, there should be quality inspectors (which can be used by the production team's technicians) to check whether the operators are strictly in accordance with the process steps, processing methods, process parameters, and civilized production requirements of the process documents. If it deviates from the provisions of the process documentation, it should be corrected immediately. Once the process specification is published, no individual has the right to change it at will. When revisions are required, they shall be jointly revised by the technical department and the main production person in charge, and shall be issued with the official revision of the technical specifications.
3. Quality management of semi-finished products in each process (this has an important effect on the quality assurance of the post-process)
2 to 5 pieces of “process finished products” that are produced in each class for each process should be sent to the quality inspector for inspection and confirmation to be OK before continuing production. Subsequent production of the "process finished product" quality should be self-inspection by the operator, the process owner to verify the signature, and the quality inspector according to the provisions of the sampling test, qualified to pay a process.
4, finished product inspection
The quality inspector shall conduct full inspection and statistical sampling inspection according to the technical documents. The qualified products shall be stamped with the code name of the inspector at the appropriate position of the finished product; each product shall be accompanied by a certificate of quality inspection department. The defective repaired product shall be filled out by the inspector and returned to the relevant department for signature and repair by the person in charge of the inspection department; the waste product shall be filled out by the inspector and signed by the person in charge of the quality assurance department and qualified. The product is stored in isolation.
5, calibration procedures for equipment
Calibration procedures for instruments, gauges, and equipment should be established to ensure the accuracy of the measurements and the good condition of the equipment. The following instruments, equipment, and tools need to be calibrated:
1) Various measuring tools, such as vernier calipers, micrometers, altimeters, hole gauges, etc.;
2) Temperature control instruments for various types of heaters;
All sizes of measuring tools and temperature-controlled instrumentation equipment should be calibrated for six months.
Calibration should be performed by an accredited standard metrology agency that registers the calibrated equipment, instruments, and tools and maintains a calibration record. The calibrated equipment, instruments, and gauges shall be marked with a conformity mark indicating the calibration error and date and the date to be calibrated next time to ensure that the calibration period is not exceeded and the calibration is not continued. The quality assurance department shall establish calibration plans and calibration cycles for instruments, equipment, and gauges, and shall be responsible for regular inspections. If the instrument, equipment, gage is damaged or the accuracy is degraded, it should be ordered to stop using it until it is repaired or calibrated.
 
Seven, the processing of customer return products
Once the product returned by the customer is received, the product and the reason statement returned must be submitted to the responsible person of the quality assurance department for processing. The quality assurance department shall designate a person to carefully examine the defects of the returned product and determine whether the reason for the return is correct. The responsible personnel of the quality assurance department shall make corresponding decisions on repair, partial scrapping, total scrapping, ..., and report to the factory manager (general manager). At the same time, at the request of the merchant, notify the production plan and sales department to withdraw the inventory from the warehouse and replenish the scrap. Product, or release plan to reproduce. For the products to be repaired, it is necessary to point out the items, parts, and methods for repairing the repairs. The products after repair shall be inspected and stamped by the quality inspector to be shipped with the certificate attached to each package.
 
Eight, unqualified product review committee
The jury is mainly to deal with products and raw materials that do not meet the requirements of the quality specifications, or to deal with the decision of the quality assurance department responsible for the decision of the committee. The jury shall be composed of the director (general manager), the head of the quality assurance department, and the person in charge of the production planning department.
The person in charge of the quality assurance department shall introduce the problems of the materials and products in combination with the user's technical specifications. The quality of the products is inconsistent, even if it does not adversely affect the function and reliability of the products, and only after the approval of the customers, the evaluation committee In order to approve the delivery of the product to the customer.
The jury can deal with the problem according to the following principles:
1) Some decisions to be made may require customer approval. Before the product is delivered, whether it needs to be approved by the customer should be decided by the quality assurance department.
2) Most products that require rework are usually reworked without contact with the customer.
3) It is not necessary to explain to the customer when deciding the product to be scrapped, but the product scrapping should immediately negotiate with the customer when it affects the delivery date. All scrapped products should be placed in the waste warehouse after the finished product is delivered, and the quality assurance department is responsible for storing it in isolation from the work-in-process and finished products for 30 days.
All meetings and decisions made by the Nonconforming Product Review Committee shall be recorded in the form and documented in the form.
If the customer still does not accept the returned product, it should be decided to scrap.
 
IX. Statistics on finished products, defective products and scraps
Statistics on finished products, defective products and scraps are an extremely important means of conducting total quality management. Statistics on the following aspects should normally be made:
1) Calculate the yield and scrap rate and the defective product rate on a monthly basis;
2) Calculate the yield and scrap rate of each batch of products and the rate of defective products by batch;
3) Count the scrap rate of products according to the reasons for scrapping;
4) Count the defective product repair rate of the product by batch;
5) Count the return rate of the product according to the customer's order quantity.
The scrap rate calculated according to the reason for scrapping and the repair rate according to the batch statistics can be counted in different processes. The statistics of each shift and the quality assurance department must be counted once a week. Using these statistics, you can make weekly and monthly production yield and scrap rate and the rate of defective products, write a statistical analysis report of yield and scrap rate and defective product rate, and analyze the product quality. Problems, trends, and possible causes of these problems. The report is sent directly to the factory manager (general manager). When necessary, it is recommended that the director (general manager) convene a meeting to study the reasons for the decline in the yield, the non-performing rate, the increase in the scrap rate, and the necessary measures, and should be announced to all employees.
 
X. Personnel training (this content can be trained by the production department)
All employees engaged in the production of products should have the basic knowledge of product process and quality specifications, and must be able to do their jobs. Therefore, it is necessary to classify the training plan and train the employees in a planned manner. For example, the production operator must understand and be familiar with the process specifications, the quality requirements of each process, and should be able to independently operate the relevant instruments, equipment and master the daily maintenance knowledge. Anyone who participates in production should be qualified for the operation of the production department, and can be put into operation after obtaining the certificate.
 
XI. Management of inspection seals
1) The seal of inspection shall be managed by the person in charge of the quality assurance department and sent to the inspector.
2) The inspection seal can only be issued to the inspector who has obtained the qualification for quality inspection. The inspector should properly keep the seal and be responsible for the use of the seal.
3) The person in charge of the quality assurance department shall file an archive of the seals issued. The contents of the registration include: the seal of the seal, the seal user, the date of issue and the date of return.
4) Any product stamped with a certain number of seals shall be inspected by the inspector.

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