Abstract: There is provided an information processing apparatus for fully utilizing the functions of a machine tool by correctly converting CL data into an NC program. The information processing apparatus includes a CL data acquirer that can acquire CL data including standardization information based on a rule defined among a plurality of output devices, thereby acquiring CL data including the standardization information associated with at least one of unique control information of the numerical control apparatus, unique control information of the machine tool, and unique control information of a user of the machine tool, and an NC program generator that acquires an NC code corresponding to the standardization information included in the CL data, and generates an NC program including the NC code based on the NC code and the CL data.

Abstract: A display control device includes a setting unit to set a mode selected by a user from a plurality of modes, and a display unit to display a machine operation panel and a keyboard on an operation screen of a machine operation panel. The modes include at least a machining mode for operating the machine tool to process a workpiece, and an MDI mode. When the mode is changed, the display unit displays a machine operation panel or a keyboard associated with the mode after the change on the operation screen.

Abstract: A numerical control device reads a machining program and causes a machine tool to operate based on the machining program. The numerical control device includes: an acceleration-deceleration determining unit; and a position-command generating unit. The numerical control device is configured to set the acceleration and the deceleration as acceleration-deceleration data when the acceleration and the deceleration satisfy tolerances decided based on actual mechanical dynamic characteristics, and set the tolerances as acceleration-deceleration data when the acceleration and deceleration do not satisfy the tolerances. The position-command generating unit is configured to generate a position command based on the moving command, the acceleration-deceleration data, and the speed at the end of the command route and the superimposition amount subjected to processing by the acceleration-deceleration determining unit.

Abstract: A numerical control device reads a machining program and causes a machine tool to operate based on the machining program. The numerical control device includes: an acceleration-deceleration determining unit; and a position-command generating unit. The numerical control device is configured to set the acceleration and the deceleration as acceleration-deceleration data when the acceleration and the deceleration satisfy tolerances decided based on actual mechanical dynamic characteristics, and set the tolerances as acceleration-deceleration data when the acceleration and deceleration do not satisfy the tolerances. The position-command generating unit is configured to generate a position command based on the moving command, the acceleration-deceleration data, and the speed at the end of the command route and the superimposition amount subjected to processing by the acceleration-deceleration determining unit.

Abstract: In a rotation angle positioning device 6 including: a rotation angle detection device 7 which has a detection target ring 8 and an angle detection sensor 9; and a rotating-shaft driving device 10 rotating a rotating shaft so as to cause a rotation angle to become a given command value ? for rotation angle, there are provided: an error pattern storage unit 11a storing a tooth-to-tooth period error pattern F made up of errors between detected rotation angles by the angle detection sensor 9 and actual rotation angles, corresponding to respective correction dividing points of an arbitrary tooth-to-tooth period in the detection target ring 8; and a command value correction unit 11b correcting the command value ? for rotation angle based on the tooth-to-tooth period error pattern F to find a corrected command value ?2 for rotation angle.

Abstract: In a rotation angle positioning device 6 including: a rotation angle detection device 7 which has a detection target ring 8 and an angle detection sensor 9; and a rotating-shaft driving device 10 rotating a rotating shaft so as to cause a rotation angle to become a given command value ? for rotation angle, there are provided: an error pattern storage unit 11a storing a tooth-to-tooth period error pattern F made up of errors between detected rotation angles by the angle detection sensor 9 and actual rotation angles, corresponding to respective correction dividing points of an arbitrary tooth-to-tooth period in the detection target ring 8; and a command value correction unit 11b correcting the command value ? for rotation angle based on the tooth-to-tooth period error pattern F to find a corrected command value ?2 for rotation angle.

Abstract: A method and apparatus by which accurate correction values for thermal displacement is calculated even when the rotation of the main spindle is restarted after interruption. The apparatus has means 2, 3 for measuring the temperature near the main spindle 15, means 5 for estimating the thermal displacement of the main spindle 15 on the basis of the measured temperature and a predetermined thermal displacement calculation expression, means 7 for calculating the correction value, and means 6 which estimates the displacement delay in re-rotation caused by the interruption of the rotation of the main spindle 15, and calculates an adjusting displacement on the basis of the estimated displacement delay. The correction value calculating means 7 calculates a correction value on the basis of the thermal displacement estimated by the thermal displacement estimating means 5 alone when the main spindle 15 is started up and rotated.

Abstract: The present invention provides a numerical control apparatus for a machine tool, which corrects an axial displacement of a main spindle caused due to a change in preload level and occurring according to the rotation speed of the main spindle. The numerical control apparatus (3) comprises: a numerical control section (6) for numerically controlling the movement of a spindle head (2) and for outputting a rotation command; a spindle control section (7) for controlling the rotation of a main spindle (5); a preload change control section (8) for changing the level of a preload applied to bearings (36, 37); and a correcting section (9) for outputting correction data for correction of an axial displacement of the main spindle (5) caused due to a change in the preload level and occurring according to the rotation speed of the main spindle (5) to the numerical control section (6) on the basis of the rotation command.

Abstract: The present invention provides a numerical control apparatus for a machine tool, which corrects an axial displacement of a main spindle caused due to a change in preload level and occurring according to the rotation speed of the main spindle. The numerical control apparatus (3) comprises: a numerical control section (6) for numerically controlling the movement of a spindle head (2) and for outputting a rotation command; a spindle control section (7) for controlling the rotation of a main spindle (5); a preload change control section (8) for changing the level of a preload applied to bearings (36,37); and a correcting section (9) for outputting correction data for correction of an axial displacement of the main spindle (5) caused due to a change in the preload level and occurring according to the rotation speed of the main spindle (5) to the numerical control section (6) on the basis of the rotation command.

Abstract: The present invention relates to a method and apparatus for calculating a correction value for thermal displacement whereby accurate correction values for thermal displacement can be calculated even when the rotation of the main spindle is restarted after interruption thereof, wherein the apparatus for calculating the correction value for thermal displacement comprises temperature measuring means 2 and 3 for measuring the temperature in the vicinity of the main spindle 15, thermal displacement amount estimating means 5 for estimating an amount of thermal displacement of the main spindle 15 on the basis of the measured temperature and a predetermined thermal displacement amount calculation expression, correction value calculating means 7 for calculating the correction value, and adjusting displacement amount calculating means 6, which estimates an amount of displacement delay in re-rotation caused by the interruption of the rotation of the main spindle 15, and calculates an adjusting displacement amount on the