Characteristic requirements of MES system in sheet metal industry

For the sheet metal processing industry MES system , Its information demand is basically the same as that of other machining workshops , Coverage plan management 、 Production management 、 Material management 、 Quality management 、 Equipment management and most machining MES General functions of , But some characteristics of sheet metal process itself , At the information level, it also reflects some unique personalized needs .

therefore , In sheet metal MES System planning , In addition to normal standard functions , We should also focus on the following characteristics for demand analysis and functional design .

Feature one

sheet metal MES The system shall emphasize the integrated support for the control of workshop production equipment. There are many types of equipment used in sheet metal processing , Generally speaking, the basic equipment includes plate shears 、 CNC punch 、 laser / plasma / Water jet cutting machine 、 Bending machine 、 Drilling machine , And various auxiliary equipment, such as uncoiler 、 Leveling machine 、 Deburring machine 、 Spot welder, etc .

There are many kinds of equipment , There are many kinds of processed parts , This makes the management and control of the whole production resources very complex . such as , The sheet metal parts of a switch cabinet are close to 100 Kind of , Its punching and shearing process 、 The bending process is concentrated in several punching and cutting flexible production lines 、 Laser cutting machine 、 On CNC hydraulic bending machine , As key production resources, these equipment are the most important factors affecting workshop production , Therefore, ensure that its equipment is in good condition 、 It is very important to improve its utilization .

Feature two

The binding effect of batch production and equipment capacity on planning and scheduling. There are many kinds of sheet metal products , Shapes are big and small , The number of orders for each finished product is also different , Therefore, there is a coordination problem between single piece production and batch production . For stamping and cutting of plate or coil , Generally, nesting is required on the same plate （ Discharge ）, In order to reduce the number of products in process , Reduce the frequency of mode change , Often nesting will take into account the economy , Parts of different orders and batches with the same process parameters may be nested on the same plate . This economic lot size will become a constraint in planning and scheduling .

On the other hand , The production load of sheet metal equipment in different process groups varies greatly . With common cutting 、 For the three processes of stamping and bending , Cutting and stamping processes can realize the simultaneous processing of multiple orders and multiple workpieces of a single equipment , The bending equipment can only process single order and single workpiece , Therefore, the single processing time of bending process is generally longer than that of the other two processes .

Feature three

sheet metal MES The system needs to cooperate with the nesting system in sheet metal processing , The raw materials for stamping and cutting are usually metal sheet or coil , In order to improve the utilization of raw materials 、 Reduce waste and waste , Nesting is used in many sheet metal processing （ Discharge ） Software , Through the software system, the sheet metal parts are automatically simulated and arranged on the sheet metal , And generate the nesting results NC Program , Provide for sheet metal equipment to perform operations . In the process ,MES The system should realize the scheduling and monitoring of sheet metal work , It needs to be integrated with nesting software . Through integration ,MES The system issues group rules of sheet metal batch to nesting software , And obtain the results of nesting feedback and relevant data of sheet metal operation execution process .

Characteristic four

Part sorting management and part identification after sheet metal processing , For sheet metal operation of small and medium-sized parts , A raw material plate will usually produce multiple parts after processing , Parts need to be sorted 、 classified 、 Summary and identification . therefore , In sheet metal MES In the system , It is also necessary to manage the identification of sorting operations and sorting parts .

In the typical project case of Huidu , Sorting of sheet metal parts , With manual sorting , There are also automatic sorting lines ：

1) For manual sorting , Can pass MES The system establishes the sorting task list （ The sorting list is integrated with nesting software or Excel File import to get ）, The sorting operator counts and confirms the sorted parts according to the sorting list , And feed back the sorting results in the system ;

2) For automatic sorting lines , Can be found in MES Modeling of automatic sorting line in , Define the online area of sorting 、 Offline framing area 、 Sorting station 、 Contents related to sorting process such as container buffer , The automatic sorting equipment will pass through MES The sorting task list created in the system performs the sorting operation .

Characteristic five

The management granularity of sheet metal task feedback can be located at the work order level , Generally speaking , A sheet metal processing unit often has many kinds of sheet metal parts , And there are many processing procedures , Including cutting 、 blunt （ cut ）、 Bend 、 welding 、 Spray, etc , Some of these processes, such as punching and shearing or nesting of multiple parts , Short processing time 、 The process beat is fast . Based on this feature ,MES When the system monitors the sheet metal operation process , The granularity of job data collection can be defined as work order level , That is to report the work order of sheet metal parts , The sheet metal part operation task is not reported .

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