Abstract: The present invention provides a machine tool system including a machine tool body and a control device. The machine tool body includes: a cover that covers a machining region; chip expelling mechanisms that are disposed at a plurality of different positions inside the cover, that expel chips generated during processing, and a discharging ability of which is changeable; and a chip information obtaining unit that obtains information related to scattering directions of the chips during the processing. In accordance with the information related to the scattering directions of the chips and obtained by the chip information obtaining unit, the control device controls the discharging ability of one of the chip expelling mechanisms corresponding to a direction in which a largest amount of the chips have scattered so as to be larger than the discharging ability of another of the chip expelling mechanisms.

Abstract: A control device, which controls a machine tool capable of alarm stop based on abnormality in machining load, includes: a photographing unit which photographs chips produced as a result of machining of a workpiece; a reference model determination unit which determines in advance a reference model of chips for determining as abnormality in machining, based on images of chips photographed within a predetermined period before alarm stop, in response to an occurrence of alarm stop; and a judgment unit which judges as abnormality occurrence in machining, in a case of a degree of similarity in chips photographed at a predetermined timing in machining later, relative to a reference model of chips that was determined.

Abstract: An object is to provide a numerical control system of a machine tool which can check a parameter that needs to be adjusted for each of a spindle and a motor.

Abstract: A machine tool includes a tool magazine configured to hold a plurality of tools, the tool magazine having a rotary unit rotatable around a predetermined rotary axis and a measured portion provided in the rotary unit, a sensor disposed outside of the rotary unit in a radial direction that is perpendicular to the rotary axis, and configured to detect the measured portion, and a controller configured to detect a position of an origin point of the rotary unit based on a result of the detection by the sensor.

Abstract: A machine tool includes: a spindle that allows a tool to be detachably mounted thereon; a tool changing device that holds a plurality of the tools, and attaches and detaches any of the tools to and from the spindle; a date and time storage unit that stores date and time when operation of the spindle is stopped last; and a calculation unit that calculates unused time of the spindle on the basis of the date and time stored in the date and time storage unit, when the tool is to be detached from the spindle, wherein in a case where the unused time calculated by the calculation unit is longer than a predetermined threshold value, the tool changing device performs detaching motion of the tool from the spindle for longer time compared to a case where the calculated unused time is at or less than the threshold value.

Abstract: An abnormality detection device of a machine tool including a spindle and a feed axis and includes: a load monitoring unit that monitors a load of the spindle or the feed axis; a machining state determination unit that determines that the machine tool is in a machining state when the load of the spindle or the feed axis is equal to or larger than a threshold; a storage unit that stores shape data of the work and shape data of the tool in advance; an interfering area calculation unit that calculates an interfering area in which the tool interferes with the work based on the shape data of the work and the shape data of the tool; and an abnormality detection unit that detects an abnormality in the machine tool by comparing a position of the tool in relation to the work when it is determined that the machine tool is in the machining state with the calculated interfering area.

Abstract: A machine tool includes a motor configured to rotate a spindle, a tool magazine holding a plurality of tools, and a controller. The controller has a storage unit storing motor information indicating that the motor is a synchronous motor. When the machine tool stops, while a tool exchange process is carried out, due to electric power outage, operation of a stop button, a value of a drive current of the motor, or a value output from the sensor, the controller uses a command for the synchronous motor, based on the motor information, as a part of a series of commands for recovery of the machine tool, where the tool exchange process is a process in which a tool attached to the spindle is changed with one of the plurality of tools of the tool magazine.

Abstract: The present invention provides a machine tool system including a machine tool body and a control device. The machine tool body includes: a cover that covers a machining region; chip expelling mechanisms that are disposed at a plurality of different positions inside the cover, that expel chips generated during processing, and a discharging ability of which is changeable; and a chip information obtaining unit that obtains information related to scattering directions of the chips during the processing. In accordance with the information related to the scattering directions of the chips and obtained by the chip information obtaining unit, the control device controls the discharging ability of one of the chip expelling mechanisms corresponding to a direction in which a largest amount of the chips have scattered so as to be larger than the discharging ability of another of the chip expelling mechanisms.

Abstract: A control device, which controls a machine tool capable of alarm stop based on abnormality in machining load, includes: a photographing unit which photographs chips produced as a result of machining of a workpiece; a reference model determination unit which determines in advance a reference model of chips for determining as abnormality in machining, based on images of chips photographed within a predetermined period before alarm stop, in response to an occurrence of alarm stop; and a judgment unit which judges as abnormality occurrence in machining, in a case of a degree of similarity in chips photographed at a predetermined timing in machining later, relative to a reference model of chips that was determined.

Abstract: A machine tool includes: a tool magazine that stores a plurality of tools; a spindle that holds one of the plurality of tools stored in the tool magazine; a glossiness measurement unit that measures glossiness of a tapered outer surface of a taper shank of each of the plurality of tools; a deterioration determination unit that determines whether or not the tapered outer surface is deteriorated on the basis of the glossiness measured by the glossiness measurement unit; and a notification unit that notifies an operator of deterioration of the tapered outer surface if it is determined by the deterioration determination unit that the tapered outer surface is deteriorated.

Abstract: A machine tool includes a spindle, a tool exchanger that attaches or detaches one of tools to or from the spindle, a spindle mover that moves the spindle to one of tool exchange coordinates when the one of the tools is to be attached or detached by the tool exchanger, and a tool exchange controller that controls, when the one of the tools is to be attached or detached by the tool exchanger, the spindle mover so as to move, on the basis of a first tool exchange coordinate associated with an attaching-target tool to be attached to the spindle and a second tool exchange coordinate associated with a detaching-target tool to be detached from the spindle, among a preliminarily-set plurality of the tool exchange coordinates respectively associated with the tools, the spindle to one of the tool exchange coordinates that are the first tool exchange coordinate and the second tool exchange coordinate, whichever is farther from a machining point.

Abstract: A display unit is controlled to display guidance such as to instruct an operator to move a spindle up and down near the Z-axis position at which the tool is transferred between a grip and the spindle and to observe a lateral movement of the tip of a tool at the same time. Then, when the tip of the tool moves laterally, the display unit is controlled to display guidance to instruct the operator to raise the spindle and turn a turret so as to reduce the lateral movement of the tip of the tool.

Abstract: A machine tool includes: a spindle that allows a tool to be detachably mounted thereon; a tool changing device that holds a plurality of the tools, and attaches and detaches any of the tools to and from the spindle; a date and time storage unit that stores date and time when operation of the spindle is stopped last; and a calculation unit that calculates unused time of the spindle on the basis of the date and time stored in the date and time storage unit, when the tool is to be detached from the spindle, wherein in a case where the unused time calculated by the calculation unit is longer than a predetermined threshold value, the tool changing device performs detaching motion of the tool from the spindle for longer time compared to a case where the calculated unused time is at or less than the threshold value.

Abstract: A tool-mounting-state estimation system includes: a measuring tool including a body section having a tapered external surface common with a tapered external surface of a tool and a vibrating source that is mounted on the body section and that generates vibration; a sensor that is provided on a spindle for drawing the measuring tool thereinto so that the tapered external surface of the measuring tool comes into close contact with a tapered internal surface of the spindle and that detects the vibration generated by the vibrating source when the vibration propagates towards the spindle via the tapered external surface and the tapered internal surface; and an estimation unit for estimating a mounting state of the tool on the basis of the vibration detected by sensor.

Abstract: A bearing diagnosing method for diagnosing degradation of a bearing rotatably supporting a spindle includes: the steps of obtaining the rotation speed of the spindle; obtaining the temperature of the bearing; recording the rotation time for which the spindle has rotated, at each of multiple classes that are defined in advance by combination of rotation speed range and temperature range, into the storage unit, based on the rotation speed and the temperature; and calculating bearing degradation information representing the degree of degradation of the bearing, based on the rotation time at each of the classes, stored in the storage unit.

Abstract: An object is to provide a numerical control system of a machine tool which can check a parameter that needs to be adjusted for each of a spindle and a motor.

Abstract: A machine tool includes a motor configured to rotate a spindle, a tool magazine holding a plurality of tools, and a controller. The controller has a storage unit storing motor information indicating that the motor is a synchronous motor. When the machine tool stops, while a tool exchange process is carried out, due to electric power outage, operation of a stop button, a value of a drive current of the motor, or a value output from the sensor, the controller uses a command for the synchronous motor, based on the motor information, as a part of a series of commands for recovery of the machine tool, where the tool exchange process is a process in which a tool attached to the spindle is changed with one of the plurality of tools of the tool magazine.

Abstract: A machine tool includes a turning position adjustment unit configured to control a turning drive unit so that, when a tool is transferred between a spindle and a grip, if an amount of sway of the tool is greater than or equal to a threshold value, a turret is turned and the amount of sway of the tool becomes less than the threshold value, and an origin point correcting unit configured to correct an origin point in accordance with a turning position of the turret acquired by a turning position acquisition unit, when the turret is turned by the turning drive unit so that the amount of sway of the tool becomes less than the threshold value.

Abstract: A machine tool having a tool magazine for changing a tool attached to a spindle is equipped with an initial operation speed setting unit configured to set the operation speed of the tool magazine to an initial operation speed, an operation speed adjusting unit configured to be operated by the user to thereby adjust the operation speed of the tool magazine relative to the initial operation speed, an actuator configured to actuate the tool magazine, an operation speed acquisition unit configured to acquire the operation speed of the tool magazine after adjustment of the operation speed made by the operation speed adjusting unit, and an actuator control unit configured to control the actuator to actuate the tool magazine at the operation speed acquired by the operation speed acquisition unit.

Abstract: A machine tool includes: a tool magazine that stores a plurality of tools; a spindle that holds one of the plurality of tools stored in the tool magazine; a glossiness measurement unit that measures glossiness of a tapered outer surface of a taper shank of each of the plurality of tools; a deterioration determination unit that determines whether or not the tapered outer surface is deteriorated on the basis of the glossiness measured by the glossiness measurement unit; and a notification unit that notifies an operator of deterioration of the tapered outer surface if it is determined by the deterioration determination unit that the tapered outer surface is deteriorated.