introduction
Product data management (PDM) begins with the management of engineering drawings and documents, and gradually develops into a technology that manages all product-related information and processes, providing information management capabilities throughout the product life cycle. With the development of network and database technology, as well as the application of client/server and object-oriented technology, PDM technology has developed rapidly in recent years. More and more enterprises are not only applied to the management of engineering data, including document management, product information management, technical data and information management, image management, etc., and have begun to cover the entire product life cycle process of the entire enterprise, and gradually established A parallel collaborative environment consisting of supply, engineering, manufacturing, procurement, marketing and sales, and customers.
1 Product Structure Management in PDM System
The product structure is a hierarchical tree structure formed by the information of a series of components and parts constituting the product according to a specific assembly relationship, and is connected with the database and the file system, so that the file information of the description component and the node are Related components are organically linked together to form a complete product structured information tree. Product structure management has three goals:
1) Realize the structural management of a certain category or a series of products, and prepare for product configuration;
2) Using the product structure as the organizational framework to manage all product related information, and realize the organization and inquiry of product information;
3) Provide a unified description of the product composition based on the product structure, and provide focused information services according to the needs of different stages of the product life cycle.
1.1 Product Structure Management Model
According to the product structure and configuration management objectives, to achieve a unified description of product structure, uniform production of material names and unified management of series products, it is necessary to establish a product structure management object model.
1.1.1 Product Information Structure Model and Product Hierarchical Relationship
In order to establish a product structure management object model and realize product structure management, we must first create a product part structure tree, which is generated by the product assembly system diagram, parts list, etc., and is described in a tree manner. Represents a component or component, and a leaf node represents a part.
1.1.2 Hierarchical model in product structure management
In order to effectively describe the hierarchical structure of a product, the components or parts in the product structure are abstracted into a component class, and the components and components are used as subclasses thereof to describe the basic properties of the product structure. Part classes and component classes are closely related to the object version, but the component's unique identity object does not change for the version.
1.2 Classification management of auto parts in PDM system
The goal of the classification management of auto parts is to organize the information about the parts with accessories as the center, which is convenient for retrieval, borrowing and information reuse, and effectively solve the related problems of the hierarchical relationship of auto parts, spare parts and assembly data, and suppliers.
1.2.1 Classification and classification management of auto parts
There are three methods for classifying auto parts by the idea of ​​part family: visual inspection method, production process analysis method and classification coding method. The visual inspection method and production process analysis method are mainly used for classification management of parts manufacturing process, and classification coding method. Can be widely used in the management of manufacturing, assembly and after-sales parts classification and supply. The classification coding method is to express the structural features and process information of the spare parts with a series of codes (classification codes), which include the identification code and the classification code. The identification code can be the code number or figure number of the spare parts, and the classification code represents the spare parts. The categories, as well as the function, structure, shape, process and other information of the parts and components; according to the classification code to distinguish the different parts of the family, thus achieving the purpose of automatic retrieval, classification and assembly and group design.
The classification and management of auto parts can be classified according to the functions, structure and assembly of parts (including parts and components) to form a classification hierarchy tree (see Table 1). Different companies or departments generally adopt different classification methods according to their own characteristics.
1.2.2 Identification of part numbers and specifications
The number of auto parts represents the model, variety and specifications of auto parts. It is very important for the purchase and management of parts. The number of domestically produced cars is unified. Most foreign cars have no uniform standards and are customized by the manufacturers.
Table 1 Main parts and accessories of automobiles
2 Implementation of parts management scheme based on open PDM system
According to the unified management of information and process in the classification management of spare parts in the automobile sales department, this paper proposes the process and method of classification management of spare parts, the classification of spare parts, based on the open PDM software developed by Wuhan Kaimu Information Technology Co., Ltd. Query, search and management of information such as logos and component trees.
Peristaltic Liquid Pump is a Peristaltic Pump that can distribute many types of liquids, such as water-based liquid/shampoo/sauce/chemical-based liquid, etc.
The flow rate of the Peristaltic Liquid Pump can be adjusted by the digital knob to adjust the motor speed to achieve the effect of adjusting the flow rate
The liquid only gets in touch with the Peristaltic Pump Tubing, will not cause cross-contamination. it's suitable for Liquid transfer occasions with high cleanliness requirements, Eg. : food/beverage/cosmetic/medical/biopharmaceutical...
For the Peristaltic Pump Tubing, We have different material choices for your various liquids. The standard tube is silicon tubing which conforms to the FDA certificate. Except that we also offer the Saint-Gobain imported tubing, Eg.: Norprene®A-60-F/Norprene®chemical /Pharmed® BPT... Which suitable for various chemical-based liquids
Peristaltic Liquid Pump,Polishing Peristaltic Pump,Basic Liquid Peristaltic Pump,Digital Speed Transmission Pump
Baoding Chuangrui Precision Pump Co., Ltd. , https://www.chuangruipump.com