METHOD AND MACHINE TOOL FOR WORKING BLANKS Russian patent published in 1997 - IPC

FIELD: cutting of blanks from non-rigid materials. SUBSTANCE: method and machine tools are designed for working planes of blanks from non-rigid materials such as plastics, timber and other by milling, grinding and so on. Milling of flat surfaces is performed at one, two, three, four sides including double-side milling of short blanks in order to receive by one pass accurate rectilinear beams and boards from inaccurate curvilinear logs and trunks. End milling cutters are used as cutting member. Said milling cutters form cutting plane including directly in working zone additional intermediate basic plane. It is combined with preliminary orientation of common symmetry axis of blank relative to intermediate basic plane; with provision of elasticity of front plane that may be moved and rocked in order to compensate not only all blanks but also errors of its "rough base" and to receive accurate plane not only at one side of blank but also to work blanks at two, three, four sides and to work short blanks at two sides in automated cycle. All these features are demonstrated by machine tool design, supported for performing the method. EFFECT: improved design of machine tool, enhanced efficiency of method. 4 cl, 8 dwg