Process requirements for CNC milling machines: Large CNC machining centers were initially developed from CNC milling machines. The first machining center was successfully developed in 1958 by Kearney & Trecker Corporation in the United States. It added an automatic tool changer to a CNC horizontal boring and milling machine, thus enabling centralized processing of multiple operations such as milling, drilling, boring, reaming, and tapping after a single workpiece setup.
For CNC lathes, based on the types, quantities, working conditions, and protection and interlocking requirements of all motors used in the production equipment, a preliminary sketch is drawn first. Then, this sketch is checked against the actual equipment to make necessary modifications before finalizing the schematic diagram. Next, according to the information gathered, the basic control circuits used in the electrical control system of the equipment are preliminarily analyzed. Finally, according to the investigation and analysis results, a rough draft is drawn and then compared with the actual electrical control circuit. Any discrepancies can be clarified through line checks, especially for large aluminum plate processing, and modifications made accordingly. This way, the required and specified schematic diagrams can be drawn and organized after verification.
When using this method for large CNC machining or CNC lathes, it is important to first understand the process requirements of the production equipment, determine the types and quantities of motors used in the equipment and their respective functions, clearly grasp the control requirements of the electrical circuit (such as forward/reverse operation and braking), and all protective measures (short-circuit, overload) along with mechanical and electrical interlocks and mutual locks. Additionally, the types, specifications, and quantities of electrical components used should be identified and their roles understood.
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