數(shù)控技術(shù)1(存儲版)
【正文】 E－ mail: NC SYSTEM CLASSIFICATION? Based on mode of control? Based on types of servodrive system? Based on application? ……《 NC Technology 》 E－ mail: Mode of NC control System to point Pointtopoint system, also called Positing control system, moves the worktable to a programmed location without regard for the path taken to get to the location. control system The contouring facility enables an NC machine to follow any path at any prescribed feedrate. The contouring control system,also called continuous path control system, manages the simultaneous motion of the cutting tool in two,three,four,or five axes by interpolating the proper path between prescribed points.《 NC Technology 》 E－ mail: Point to point1: Axial path《 NC Technology 》 E－ mail: Point to point2: 45 degrees line path 3: Linear path《 NC Technology 》 E－ mail: Circular Interpolation? Theoretically, Capable of creating curve and circle, using increment of small line or polygon.《 NC Technology 》 E－ mail: Example of continuous path《 NC Technology 》 E－ mail: CNC Interpolation? Interpolator– Hardware device (NC system)– Software program (CNC system)? Functions:252。s first digital puter. 《 NC Technology 》 E－ mail: The evolution of NC To ensure that all . military airplanes were manufactured identically, the United States Air Force invited several panies to develop and manufacture numerical control systems that could handle the volume and repeatability. The first contract was awarded to the Parsons Corporation of Michigan, which then subcontracted development of a servo system for the machine tool to the Servomechanism Laboratory at MIT《 NC Technology 》
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