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The definition of reference axis of numerical control machine tool

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  • source:TRIANA CNC Machining
Normal > is simplify process designing and the versatility that assure a program, name formulate to the reference axis of numerical control machine tool and direction uniform standard, stipulate linear feed reference axis uses X, y, z expresses, often weigh basic reference axis. X, y, the correlation of Z reference axis uses decision of right hand formula, following plan institute are shown, in the graph of big thumb point to the square that is X axis to, forefinger points to the square that is Y axis to, middle finger points to the square that is Z axis to. Normal Align=left> around X, y, the circumferential feed reference axis that Z axis rotates uses A respectively, b, c expresses, normal Align=left> basis formula of right hand helix, if plan institute is shown, point to with big thumb + X, + Y, + Z direction, criterion forefinger, middle finger pointing to is circumferential feed motion + A, + B, + C direction. Normal Align=left> numerical control moves, some drives cutting tool motion to come true by main shaft, some is taking workpiece motion to come true by workbench. Afore-mentioned reference axis square to, it is to assume workpiece is not moved, cutting tool photograph makes the way that feed moves to workpiece. If be work shift is used,add " ′ " the letter expresses, press the concern of opposite motion, the square Xiang Qia that workpiece moves is good the square that moves with cutting tool to contrary, have namely: Normal Align=left>+X=-X ′ , + Y=-Y ′ , + Z=-Z ′ , normal Align=left>+A =-A, + B =-B ′ , + Normal Align=left> is likewise both negative direction of motion also each other are contrary. The direction of machine tool reference axis depends on the layout of the type of the machine tool and each component, normal Align=left> is right lathe: Normal Align=left> -- Z axis and coincide of main shaft axes, along Z axis square will increase the space between spare parts and cutting tool to shift; Normal Align=left> -- X axis is vertical at Z axis, corresponding at turning the radial of tower tool carrier moves, along X axis square will increase the space between spare parts and cutting tool to shift; Normal Align=left> -- Y axis (be nominal normally) make the coordinate system that follows right hand rule together with X axis and Z axis. CNC Milling