In machining, of detecting element of numerical control machine tool choose knowledge

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  • source:YIGAN CNC Machining
(1) dominate program according to position of numerical control system, linear to the machine tool displacement is used direct or indirect measurement, and choose linear model or detecting element of transition coming back. At present numerical control machine tool uses half closed-loop control extensively, choose angle of transition coming back to measure component (rotate coder of transformer, pulse) (2) ask to detect according to numerical control machine tool precision or speed, choose the position or rotate speed detecting element (coder of test dynamo, pulse) . Generally speaking, bed of large scale computer asks to give priority to with satisfying speed, high accuracy, medium or small the machine tool is given priority to with satisfying precision. Its resolution should compare choice detecting element commonly treatment precision is tall quantitative class. (3) the detecting element with numerical control the at present most commonly used machine tool is photoelectricity pulse coder, the least shift of system of pitch of its ball guide screw according to numerical control machine tool, numerical control but hear, instruction fold and detect the fold pulse coder that will choose corresponding norms. (4) when choosing detecting element, want to consider numerical control device has corresponding interface circuit. CNC Milling CNC Machining