Tham khảo tài liệu 'kinematic geometry of surface machinin episode episode 7', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 186 Kinematic Geometry of Surface Machining tn nÍ rd VitldÍX íìlmi p 1 ind 1 11 ciiV iilm cXỉ 1 ĩ I id I T p 2 Tldí Tilani liiii tiin T Etiicidtvs t e plane 21 an t e cncuiai cy n er 21 . e plane puinun 22 nf 1 11 iri i I i ri I IT cnrfacp ffpnprafpc 1 11 Tilani pt1 dimd 1 11 nldinci p 2 o t egeneidu ngsuudCegeneidtesi epiane 22 an t epaue 22 Knowing the dimensions of the milling cutters and the parameters of their motion relative to the work the above formulae can be used to derive equations of all of the machined part surfaces. Similarly the above formulae work when necessary to determine the generating surface of a cutting tool for machining of a given part surface. Kinematical Method for the Determining of Enveloping Surfaces For engineering applications one more method for the determination of enveloping surfaces is helpful. This method is referred to as the kinematical method for the determination of enveloping surfaces. Initially this method was proposed by Shishkov as early as in 1951 31 . The kinematical method is based on the particular location of the vector V 2 of relative motion of the moving surface and of the enveloping surface. Vector V1-2 is located within the common tangent plane to the surfaces. This condition immediately follows from the following consideration. Motions of only two kinds are feasible for the moving surface and the enveloping surface. The surfaces can roll over each other and they can slide over each other. The component of the resultant relative motion V1-2 in the direction perpendicular to the surfaces is always equal to zero Figure . The cutting tool performs a certain motion relative to the work. The part surface P is generated as an enveloping surface to consecutive positions of the generating surface T of the cutting tool. Points of three different kinds can be distinguished on the moving surface T. Consider points of the first kind for example the point A Figure . The vector of resultant motion of the .
