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Management and maintenance of inspection tools

In some large and medium-sized mechanical processing enterprises, it is inconvenient to use general measuring tools to measure the dimensions of certain parts that need to be tested, or even impossible to measure at all. Special measuring tools must be designed. However, many companies do not pay much attention to the management of special measuring tools. Some measuring tools are neither issued with a certificate nor included in the periodic verification. After a period of use, they are not qualified but continue to be used for measurement, which affects product quality . Here, Jin Mao introduces to you our experience in the management of special measuring tools for reference.

1. Design, manufacture and inspection of special measuring tools

First of all, enterprises should design special measuring tools by the design department according to the machining and measurement needs of mechanical parts. During the design process, design review, verification, design confirmation, etc. should be carried out, and then managed according to ISO9000 standard documents and management methods. If the design drawing needs to be changed, it must pass the measurement department and the manufacturing department.

The special measuring tools made according to the design drawings shall be inspected by the quality inspection department using the full inspection method. Those who pass the inspection shall be engraved with the serial number, the verification number and the relevant measurement dimensions with a steel stamp, and the certificate shall be issued and then sent to the measuring tool warehouse.

2. Requisition and weekly inspection of special measuring tools

When the user department retrieves the new special measuring tool from the measuring tool library, it can be used only after the measuring room has checked, confirmed, registered, replaced the card, and issued the certificate. The inspection date, inspection period and validity period shall be indicated on the inspection certificate so as to be included in the normal weekly inspection plan. The length of the verification period should be determined according to the frequency of use, the environment of use, and the structure of the measuring tool itself.

3. Daily management of special measuring tools

To retrieve the special measuring tool from the measuring room, it must be registered and recorded in time, and managed by a special person, and strictly abide by the loan and return system. Managers need to send special measuring tools for inspection according to the weekly inspection plan in exchange for a new certificate. If a measuring tool is found to be abnormal or cannot be confirmed during use, it should be sent to the measuring room for inspection and confirmation in time. The user is usually responsible for the daily maintenance and maintenance of the measuring tool. Relevant departments should also conduct supervision and assessment.

4. Scrap, recycling and utilization of special measuring tools

The scrapping of special measuring tools must be approved and recovered by the measuring room to prevent it from flowing into the production site.

For some special inspection tools that are scrapped due to complicated design, troublesome manufacturing or high cost, and only a few parts do not meet the requirements, or some parts can be re-used after grinding, in order to reduce waste, enterprises can Technical staff specialize in handling. If it can be reused, it must be tested and approved by the measurement room and issued a certificate.