Once the finalized NC part program has been stored in the CAM database, manufacturing priority dictates when the program is executed. The master production schedule, developed to reflect priority requirements of an individual company, is used by a scheduling program to control production. The scheduling program receives information concerning the status of production and makes the following information available:

Status of individual parts undergoing machining operations.
Status of each NC machine tool.
Actual production times versus scheduled production times.
Impending machine or system failures.

Based on this information, the scheduling program determines the production load for each operational machine tool so that established priorities are maintained. When the Tag Heuer Carrera Replica scheduling program determines which NC part program is to be executed next, it places the data in a ready bank that is accessible, either directly or indirectly, to the numerical control machine’s MCU. The program may also generate information concerning tooling, setup times, and manufacturing time for use by production personnel.

Manufacturing Control

The manufacturing control mode depends on the type of NC configuration used in the CAM system. Consider the generalized manufacturing control system. The manufacturing control program can be executed by a minicomputer at the NC machine site (CNC), a real time computer controlling a group of NC machines, or a large scale computer being linked to the NC machine tool via telecommunications lines (DNC) .The manufacturing control program passes instructions to the NC machine based on data currently in the ready bank. NC data is obtained in blocks (subdivisions of the entire data structure or part program) from this ready bank as required. Individual NC blocks of information are passed to the machine. Process information and machine status are conveyed by the control program to the appropriate data evaluation modules.

The quality control function uses component specifications obtained from the CAM database. The quality control program may receive manual input via interactive terminals at the inspection site or data obtained from NC inspection equipment. Regardless of the data source, the quality control program performs two distinct functions: it provides accurate validation of manufactured parts and initiates action by the manufacturing control system when tolerance exceptions occur.

The level of complexity of a CAM database is directly proportional to the number of tasks required by the system. In the ideal CAM system an extremely large and complex Replica Audemar Piguet database configuration is required. For an attainable CAM system (by present standards), the database should contain those elements illustrated in Fig. 8. 1. For the CAM system shown, only the engineering and manufacturing functions are under direct system control. Engineering design data enters the database from computer-aided design programs used by various engineering

Departments. The design data and externally supplied manufacturing specifications are used by production/manufacturing engineering to develop NC part programs and other operational specifications. These are stored as NC production information in the database.