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1. (WO1991018335) CYLINDER INTERPOLATION SYSTEM
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/018335 International Application No.: PCT/JP1991/000584
Publication Date: 28.11.1991 International Filing Date: 26.04.1991
IPC:
G05B 19/18 (2006.01) ,G05B 19/41 (2006.01) ,G05B 19/4103 (2006.01)
G PHYSICS
05
CONTROLLING; REGULATING
B
CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
19
Programme-control systems
02
electric
18
Numerical control (NC), i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
G PHYSICS
05
CONTROLLING; REGULATING
B
CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
19
Programme-control systems
02
electric
18
Numerical control (NC), i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
41
characterised by interpolation, e.g. the computation of intermediate points between programmed end points to define the path to be followed and the rate of travel along that path
G PHYSICS
05
CONTROLLING; REGULATING
B
CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
19
Programme-control systems
02
electric
18
Numerical control (NC), i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
41
characterised by interpolation, e.g. the computation of intermediate points between programmed end points to define the path to be followed and the rate of travel along that path
4103
Digital interpolation
Applicants:
FANUC LTD [JP/JP]; 3580, Shibokusa Aza-Komanba Oshino-mura Minamitsuru-gun Yamanashi 401-05, JP (AllExceptUS)
KAWAMURA, Hideaki [JP/JP]; JP (UsOnly)
SASAKI, Takao [JP/JP]; JP (UsOnly)
Inventors:
KAWAMURA, Hideaki; JP
SASAKI, Takao; JP
Agent:
HATTORI, Kiyoshi; Hattori Patent Office Horiei Center Building 3-9, Motoyokoyamacho 2-chome Hachioji-shi Tokyo 192, JP
Priority Data:
2/13483624.05.1990JP
Title (EN) CYLINDER INTERPOLATION SYSTEM
(FR) SYSTEME DETERMINANT UN CYLINDRE PAR INTERPOLATION
Abstract:
(EN) A cylinder interpolation system for machining a cylindrical surface of a cylindrical work. Tool diameter correction means (104) calculates an offset vector of a tool diameter with respect to a machining shape instructed on imaginary orthogonal coordinates and determines the center passage of a tool. Interpolation means (107) interpolates this center passage and outputs an interpolation pulse (PCyi) of an imaginary linear axis and an interpolation pulse (Pzi) of a cylinder axis. To inversely convert the imaginary orthogonal coordinates to the cylinder coordinates, the interpolation pulse (PCyi) is converted to a pulse (PCi) for rotating the axis of rotation by pulse conversion means (108). On the other hand, means (105) and means (109) calculate a corrective component (Vcy) at the beginning of a block and a synchronous corrective component ($g(D)Vcy), respectively. These corrective components (Vcy, $g(D)Vcy) are interpolated by means (106) and means (110) and added to the pulse (PCi) for rotating the axis of rotation. In this way, the tool cutting surface is controlled so that it exists always immediately above the center axis of rotation and the machined surface is vertical to the cylindrical surface of the work.
(FR) Système déterminant un cylindre par interpolation, permettant d'usiner une surface cylindrique sur une pièce à usiner. Un dispositif (104) de correction du diamètre de l'outil calcule un vecteur décalé pour un diamètre d'outil, en fonction d'une forme à usiner définie par des coordonnées orthogonales imaginaires, et détermine le passage central de l'outil. Un dispositif (107) d'interpolation interpole ledit passage central et émet une impulsion d'interpolation (PCyi) correspondant à un axe linéaire imaginaire, et une impulsion d'interpolation (Pzi) correspondant à l'axe d'un cylindre. Pour convertir inversement les coordonnées orthogonales imaginaires en coordonnées relatives à un cylindre, l'impulsion d'interpolation (PCyi) est transformée en une impulsion (PCi) par un dispositif (108) de conversion d'impulsion, l'impulsion (PCi) étant destinée à faire tourner l'axe de rotation. D'autre part, deux dispositifs (105 et 109) calculent, respectivement, une composante correctrice (Vcy) au début d'un bloc et une composante correctrice ($g(D)Vcy) synchrone. Ces composantes correctrices (Vcy, $g(D)Vcy) sont interpolées par deux dispositifs (106 et 110) et sont ajoutées à l'impulsion (PCi) destinée à faire tourner l'axe de rotation. Ainsi, la surface coupante est commandée de façon qu'elle se trouve toujours juste au dessus de l'axe central de rotation et que la surface usinée soit en position verticale par rapport à la surface cylindrique de la pièce à usiner.
Designated States: US
European Patent Office (CH, DE, IT)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
EP0484539US5282144