摘要:
@ A method for operating a computer controlled industrial machine, such as a lathe, in which a machining operation can be interrupted, a tool displaced from a workpiece and the operation subsequently resumed at the point of interruption. The method includes provision for interrupting canned cycles, such as threadcutting cycles on a lathe, in a manner to prevent damage to any previously cut threads. In one embodiment, the method provides for retrace of prior machining operations before resuming the interrupted operation.
摘要:
L'invention concerne des systèmes assistés à commande numérique par ordinateur du type de ceux conçus pour recevoir des instructions de programme de pièce définissant une trajectoire désirée (110) de mouvement entre un outil (12) et une pièce d'usine (w), où ladite trajectoire peut comprendre une partie courbe vers l'intérieur ou vers l'extérieur que doivent effectuer par un mouvement linéaire coordonné des éléments de la machine, le long de deux axes linéaires orthogonaux au moins (X, Y). L'invention décrit des appareils et des procédés permettant de corriger les erreurs de rayon de la trajectoire (E) pour faciliter le mouvement précis et rapide le long de la courbe. On décrit ainsi une correction de rayon de la trajectoire par le biais de commandes de positions (52, 53, 54 et 55), que reçoit le servomécanisme (69) utilisant lesdites données de rayon corrigées (46), la différence entre ces dernières et le rayon désiré (R) à usiner compensant en partie au moins l'erreur de rayon de la trajectoire (E) qui autrement serait produite par le servomécanisme (69).
摘要:
The invention relates to servo-driven computer-numerically-controlled systems of the type adapted to receive part program instructions defining a desired path (110) of relative movement between a tool (12) and a workpiece (W), wherein the path may include an interior or exterior curved portion to be effected by coordinated linear movement of machine members along at least two orthogonal linear axes (X, Y). The invention provides apparati and methods for correcting path radius errors (E) to facilitate rapid and accurate movement along the curve. The invention carries out path radius correction by generating position commands (52, 53, 54 and 55) received by the servo (69) using corrected radius data (46), the difference between which and the desired radius (R) to be machined compensates for at least a portion of the path radius error (E) that would otherwise be generated by the servo (69).
摘要:
The invention relates to servo-driven computer-numerically-controlled systems of the type adapted to receive part program instructions defining a desired path [110] of relative movement between a tool [12] and a workpiece [W], wherein the path may include an interior or exterior curved portion to be effected by coordinated linear movement of machine members along at least two orthogonal linear axes [X,Y]. The invention provides apparati and methods for correcting path radius errors [E] to facilitate rapid and accurate movement along the curve. The invention carries out path radius correction by generating position commands [52,53,54 and 55] received by the servo [69] using corrected radius data [46], the difference between which and the desired radius [R] to be machined compensates for at least a portion of the path radius error [E] that would otherwise be generated by the servo [69].
摘要:
The invention relates to servo-driven computer-numerically-controlled systems of the type adapted to receive part program instructions defining a desired path [110] of relative movement between a tool [12] and a workpiece [W], wherein the path may include an interior or exterior curved portion to be effected by coordinated linear movement of machine members along at least two orthogonal linear axes [X,Y]. The invention provides apparati and methods for correcting path radius errors [E] to facilitate rapid and accurate movement along the curve. The invention carries out path radius correction by generating position commands [52,53,54 and 55] received by the servo [69] using corrected radius data [46], the difference between which and the desired radius [R] to be machined compensates for at least a portion of the path radius error [E] that would otherwise be generated by the servo [69].
摘要:
@ A method for operating a computer controlled industrial machine, such as a lathe, in which a machining operation can be interrupted, a tool displaced from a workpiece and the operation subsequently resumed at the point of interruption. The method includes provision for interrupting canned cycles, such as threadcutting cycles on a lathe, in a manner to prevent damage to any previously cut threads. In one embodiment, the method provides for retrace of prior machining operations before resuming the interrupted operation.