Basic Principles of the Inspection During Production
The production process is characterized by a complex interlinking of production operations and inspection operations. The operator inspection and control of process characteristics that affect the quality of the products do not permit a clear separation of the two. As a result, the work schedulers and inspection planners can create the routings together.
For this reason, the inspection characteristics of the QM component are integrated in the work scheduling and production processing functions of the PP (Production Planning) component. The characteristics - which can be both inspection characteristics or process characteristics - are created for one operation. The test equipment is assigned as production tools. Both production and inspection activities can occur within the same operation.
Inspection Points and Inspection Intervals
By using inspection points for the inspection during production, you can perform regular inspections at certain intervals and record inspection results for individually defined objects (for example, containers or shifts).
You define inspection intervals in the works schedules at the operation level; the intervals can be time-related, quantity-related or freely defined. For example, you can specify in the routing that an inspection is to be performed every hour in a certain operation. In this case, the inspection results are recorded every hour.
This is documented for each interval by means of an inspection point to which the inspection results are assigned. Each inspection point can refer to a partial lot. As a result, the inspection results are assigned to the finished partial quantity. This enables the production process to be monitored continuously with regard to the process characteristics or inspection characteristics.
Generating an Inspection Lot
When a production order is released, the system generates a special inspection lot data record for managing the inspection specifications and inspection results in all operations.
Confirming the Inspection Results for the Inspection Point
Confirmation of the inspection results to the QM component can be linked to the confirmation of the operations to the PP component. This can occur automatically or you can call up a special screen for a detailed confirmation if you have to record additional PP data. Defect data can also be confirmed.
The characteristic results are recorded for individual inspection points. The inspection point quantities can be summarized under quality aspects to form partial lots if partial quantities with different attributes are present. If the finished product is managed in batches, the partial lots can be assigned to individual batches during or on completion of the order.
Using Control Charts
One of the main areas of application for control charts is in monitoring and controlling production processes in control in the inspection during production. A process is in control or under statistical control if the monitored process parameters only vary randomly between samples. The control chart can be used to detect special influences on the process. The deficiencies must be corrected by intervening in the process. The success of the corrective measure can be checked using the control chart.
If partial lots are used, a "usage decision" is proposed automatically as a default for each partial lot in accordance with the inspection point valuation when the inspection point is confirmed. The proposed code can be modified within the predefined code group.
The usage decision for the entire lot documents the completion of all inspections or the completion of the production order from a QM perspective.
In order to make the usage decision for the entire lot, you can define a job that makes automatic usage decisions at a defined interval after the orders have been completed.
Batch Classification and Certificates
By means of integration in the batch management function, the results available for a partial lot can be passed on to the batch if necessary and subsequently used for batch classification purposes. As a result, the inspection results are available directly for batch selection in Sales and Distribution (SD).
The inspection results can also be used to generate quality certificates.
Planning the Inspection During Production
Processing the Inspection During Production