Implementation of tool marking technology in aerospace manufacturing enterprises
Tool management department business analysis
In aerospace manufacturing enterprises, the mode of tool management is mainly managed by means of total/sub-library: the general warehouse is responsible for the purchase and purchase of tools; the distribution of tools for individuals and departments is the responsibility of the general library; Borrow and return tools.
If there is no required tool in the general warehouse, the general library will apply for the purchase. After the relevant procedures are approved, the materials department will make the purchase. After the arrival, the goods will be put into the general warehouse, and each sub-library will fill out the pick-up list.
Tool Management System Overview
Aiming at the characteristics of tool management in aerospace manufacturing enterprises, the urgent need for the establishment of digital production workshops in enterprises, according to the needs of the enterprise tool management department, established a tool management system combining C/S and B/S structure. Among them, the tool management personnel are managed by C/S mode, and other personnel perform data query and sharing through the B/S structure. At the same time, it is equipped with automatic three-dimensional storage equipment to meet the requirements of automatic management of tool inventory.
Bar code technology and coding to achieve tool identification
The manufacturing tasks of aerospace manufacturing enterprises belong to single-piece small-volume production. In the production process of model tasks, the special requirements for tool use have become the key to the selection of tool marking technology. In the original tool warehouse, each type of tool is stored in a special metal box. The manager fills in the name and specifications manually with the ink pen on the box, and puts it in the tool cabinet. The tool borrowing uses the tool board as the certificate, and Manually recorded on the tool book. This management method is relatively simple, the placement of the tool is not flexible, the annual amount of tool books is large, and the traceability of the tool borrowing is quite inconvenient. Therefore, the aerospace manufacturing enterprises as the national defense technology industry urgently need to improve this backward management method, and must adopt advanced tool marking technology to meet the technical needs of aerospace manufacturing. The development of aerospace models belongs to the national defense technology industry and has strict confidentiality requirements. Therefore, RFID technology cannot be used for the current tool identification system of aerospace manufacturing enterprises. From the perspective of cost, the sensor method is not suitable, and its technology is not mature. Therefore, in the implementation process of the tool management system, aerospace manufacturing enterprises consider the cost of the technology, the maturity of the technology and the difficulty of implementation. Barcode recognition technology is a scientific and reasonable choice as a technical means of tool recognition. Bar code technology has the advantages of fast input speed, high reliability, economical and easy to manufacture. There are many types of barcodes, one-dimensional and two-dimensional. One-dimensional codes include 128 codes, UPC codes, EAN-13 codes, etc. From the perspective of equipment cost and practicality, enterprises finally choose one-dimensional 128 codes as the output format of barcodes. . At the same time, considering the variety and shape of the tools involved in the model task, in order to achieve effective management and reasonable use, it is necessary to establish reasonable coding rules, and the coding system and bar code of each type, each type and each tool. The combination of technologies enables the management to efficiently retrieve, schedule, and distribute tools while rationally scheduling production plans and purchase plans. According to the production needs of aerospace manufacturing enterprises, combined with the basic parameters of the tool itself, the coding rules that conform to the actual situation of the enterprise are formed. To ensure the scalability of the code, a redundant code field is provided in the spare code portion. The tool coding rules are set as follows: The tool code consists of four parts: the first to third parts are the main code of the tool code, and the fourth part is the auxiliary code. The main code adopts a rigid coding system, that is, the number of bits is fixed, and the auxiliary code adopts flexible coding. The auxiliary code mainly describes the marking characteristics, such as the tool manufacturer, industry standard, tool parameters, etc., reflecting the automatic identification of the tool in the CNC tool and machining center. According to the requirements of production and processing, aerospace manufacturing companies choose tool specifications as the auxiliary code of the tool. After defining the tool coding rules, the operator defines the code for each type of tool. The tool bar code label is generated in batches by the tool management system. The tool bar code label is composed of five parts: tool name, tool size, one-dimensional 128 code, tool number and purpose.
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