ERP system according to the sales order, sales forecast, inventory, lead time and other basic information, select the corresponding parameters, calculate the corresponding period of feasible production plan; Calculation result of MPS, passed to the MRP and other plans as basic data, and more importantly, as a production orders of ERP will passed to the corresponding production department to perform production tasks; In the process of the production department production tasks, ERP implementation planning data comparison with the results, check the effect of the execution of the plan found the problem in time; For examination results, found that the experiences and lessons through revising calculation parameters, the revision work flow, then summarize to the planning model,
This is the plan system, ERP system implementation of manufacturing system are the difficulty in the ERP implementation, is also the essential important link, do a good job in the implementation of the manufacturing system to do the following work:
1, the establishment of the product structure tree is key to the success or failure of implementing ERP production subsystem of
Using computer aided production management, the first to enable computers to read made by an enterprise, all involves material, product structure and to facilitate the computer recognition, must take use of graphic expression product structure into a data format, such as data format to describe the file is the BOM of product structure, BOM is, it is a document defining the technology of product structure, therefore, it is also known as the product structure table or product structure tree, BOM (BOM) is the key unit of ERP system, deciding the success or failure of manufacturing system of success is also the most important basis for product quotation, so that enterprises in implementing ERP manufacturing system before the establishment of the first to have the product structure tree,
Establish a product structure tree there are two ways, one is enterprise has implemented a product data management (PDM) system, first in the PDM design structure tree is established, and then through the interface of PDM and ERP integrated manufacturing transfer product structure information and material information to the ERP, and the process parameters are defined into ERP required in engineering structure tree, another way is the enterprise did not implement PDM system, define the material information directly in the ERP system, establishing engineering structure tree, and defines the relevant process parameters, the formation of ERP required for engineering structure tree, because of our company before the implementation of ERP system has implemented a product data management (PDM) system, so our enterprise is to use the first way, through the comparison, I think the first way is more advantage product structure tree building, many enterprises in the implementation of ERP system without implementing PDM system, but after the implementation of the ERP system, will happen to coincide choice we will continue to implement the product data management (PDM) system, because the data source of product data management (PDM) system is a ERP system, from the support of PDM system, ERP need material data, especially the product structure information cannot effectively, or not convenient to produce, our company USES the product data management (PDM) system is the SMARTEAM, using ERP system is the RS10 Beijing machinery automation research institute, the combination of the two systems of organic determines our established product engineering structure is convenient, also is our factory production manufacturing system provides the strong guarantee correct operation,
1.1 design based BOM is
BOM design by the engineering design personnel in the PDM system based on product requirements to establish a design with the product structure tree, in the structure tree, have the basic information of the product materials, product structure level of information, the product of information and process information part of the product, and of course the most without these information is encoded, this is the implementation of ERP system for the most basic engineering data preparation work before, for discrete manufacturing enterprise, the product variety is more, many varieties, small batch and many varieties mass, series of hundreds of thousands, tens of thousands of specifications, establish product design BOM is a complicated and tedious work, if you want to set up one-time all structure tree, the difficulties, our enterprises in establishing design structure tree still USES a step-by-step implementation of the strategy, according to the product series set up product structure tree, first set up the basic basic series products, then each time period to complete a series of other product structure tree, this BOM set up step by step to complete the design, through the analysis of product structure, I feel most of the products is based on the standard series of basic derived, with the standard difference between the basic series of products, generally only 5% - 10%, while the remaining 90% is exactly the same, so the first basic series product structure tree, establish standards and shorten the process of, it does not lose a good tree-building methods,
1.2 engineering BOM transformation is the key production plan to run
Engineering BOM is process engineer according to the level of processing factory and ability, to design BOM designed again, which is used to process design and production management, using it can clear understanding of the manufacturing relationship between parts and parts, tracking how the parts are made, where is the manufacturing, manufacturing by who, what kind of information such as manufacturing, at the same time, the engineering BOM and MRP Ⅱ/ERP production management of one of the key management data structure,
At the Beijing institute of mechanical industry automation RS10ERP system defined in the engineering BOM is more convenient and quick, provides the basic material in software defined interface, can be the basic information for the material, warehouse information, financial cost information, the definition of convenient production plan information, in addition, in the ERP provides the interface table data transmission, a material data transfer, product structure information, process information transmission, through the interface can be the product structure information and material information in the product data management (PDM), process information to the ERP system, so a can be used in ERP project BOM is set up,
1.3 BOM to determine the four steps of
Under normal circumstances, to determine a final correct BOM, need to have four steps: the first step design BOM set up; The second step engineering BOM transformation; The third step to verify operation plan; Step 4 problem of feedback correction, through four steps can determine accurately, finally complete product BOM, this process is usually impossible to omit, especially the validation phase, by this stage you can verify the integrity of the BOM structure information, norm and the accuracy of the lead time, the correctness of the process routes setting and so on, these parameters only through the actual project operation and application of the actual manufacturing to the final validation and feedback,
2, the lead time defined decision accuracy,
Our MPS in the implementation of ERP/MRP plan, first of all, want to consider the processing cycle of its products, which often have two kinds of setting method, one is the lead time as a constant, of course, anticipate the average lead time is the average batch, the second is the lead time as a dynamic number, along with the change of volume change, the first method has the advantage of less impact on the procurement lead time, purchasing a sequence should be first to give first production orders, production feeding, products in the backlog is less, but for production order of the time limit for a project, it needs to depend on the ability to plan CRP analysis of a large number of adjustment,
The second approach has the advantage of early phase in the changes over the batch, lead to feeding single output, after the first cause in the products in the workshop area, for semi-finished products, due to the change of a cycle of semi-finished products, will lead to wait or lags behind other semi-finished products, the impact on the purchasing plan is also very big, often happen after the release of purchase order material, instead of the first,
Under normal circumstances, enterprises in the implementation of the manufacturing system, is set according to the first way, by the enterprise production management, material procurement department according to the experience of the past in the process of production, set a home-made parts respectively, outsourcing, procurement lead time on average, as lead time itself is an experience value, or a statistics, too pursuit of the accurate lead time is meaningless, through MRP run results and there are some difference between the actual plan, this requires production operator to adjust the workshop task, modified in ERP, we often adopt the strategy of MPS master production plan adjustment to balance the number of actual unstable, makes the volume of orders placed by agreement, to make the production lead time approximation remains the same, and minish the MPS master plan batch gradually, through these measures is to reduce the ERP project is not consistent with the actual plan,
3, the definition of virtual parts simplifies the BOM, convenient for program management,
Virtual items: virtual assembly is a no inventory, it could be the parent pieces together, the materials needed to produce a sub assembly parts, MRP system can be spread through the virtual parts directly to the virtual sub parts, as if the child even directly on the virtual female parts, calculate the cost of the product cost management system, the mother of these virtual items of the virtual assembly costs will include a material cost, but does not include the cost of the artificial and manufacturing cost elements,
Usually we will set the following two cases into a virtual parts: 1) does not exist in the actual business of products or materials, such as the brush device on the motor in stock there is no such thing as (by brush, brush brush pole, pole of), made up by several packages, virtual parts when picking has actually made the computer automatically transformed into product package, 2) in order to simplify the BOM, part will be relatively fixed, while in practice, there is no physical combination of BOM is set to a virtual products, the production sheet has the virtual automatically break out,
Virtual simplifies the definition of BOM, great convenience to the management of the production plan,
4, management optimization of secondary development is promotion means of implementing ERP production subsystem of
Management optimization of secondary development is a means of implementation of ERP in the icing on the cake, is managed by enterprises according to their own needs in the ERP software for simple development, the content of the involved are diverse, usually will increase in the system menu, page or reporting features, the development of convenient enterprise managers or system users convenient query or statistics to the relevant information, the Beijing institute of mechanical industry automation RS10 easy to develop, can use a simple SQL statements and JAVA language to develop enterprises need menu, page or statements, for enterprises to implement ERP system, develop some applicable statement or pages, not only ensure the user not out of the original works, and can greatly improve the user's interest,
5, conclusion
ERP implementation success rate is not high, the implementation of the ERP manufacturing system is the key, scientific and feasible plan system is the essence of ERP is the root cause of the enterprise application of ERP can produce efficiency, ERP and the traditional management information system is a big difference, it has the advanced management ideas, all kinds of scientific planning model, ERP is not just the input documents, query statistics, prediction model based on statistical principle design, according to the principle of management and resource limit design plan model, surrounding planning implementing a series of related processes, is need our research focus on the core, in addition to the above points in implementation of production system to focus on, in the implementation of the manufacturing system should also consider the timing of the integration of manufacturing system and warehouse interface, interface, and plan the whole batch and batch of finished-product stock plan, sales outbound effect, these problems looks be like simple, but if it is not in the implementation of overall planning, consideration, can affect the system implementation process, and the user's confidence in the system,
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