Abstract: A difference extracting device includes an information collecting unit configured to collect, from each of a plurality of production facilities each including a device having an electric motor and a control device configured to control the device, status information representing a state of each of the plurality of production facilities, a difference extracting unit configured to extract a difference in the status information between the plurality of production facilities, and a difference display processing unit configured to display the extracted difference on a display screen.

Abstract: A machine tool includes a spindle configured to hold a tool, a tool magazine configured to hold a plurality of tools and to exchange the tools with the spindle, and a cleaning mechanism configured to remove adhering objects adhered to the tool magazine by spraying fluid to the tool magazine.

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 difference extracting device includes an information collecting unit configured to collect, from each of a plurality of production facilities each including a device having an electric motor and a control device configured to control the device, status information representing a state of each of the plurality of production facilities, a difference extracting unit configured to extract a difference in the status information between the plurality of production facilities, and a difference display processing unit configured to display the extracted difference on a display screen.

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: A machine tool includes a spindle configured to hold a tool, a tool magazine configured to hold a plurality of tools and to exchange the tools with the spindle, and a cleaning mechanism configured to remove adhering objects adhered to the tool magazine by spraying fluid to 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 includes a maintenance unit that can be replaced by a predetermined unit. The machine tool includes a monitoring section and a determination section. The monitoring section monitors a feature amount that gradually changes accompanying deterioration of the maintenance unit. The determination section determines whether the maintenance unit has been replaced on the basis of a trend of a change in the feature amount monitored by the monitoring section. With such a configuration, the machine tool is able to determine whether the maintenance unit has been replaced.

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; as abnormality detection unit that detects an abnormality in the machine tool when the monitored load 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; a non-machining area or machining area calculation unit that calculates a non-machining area in which the tool does not interfere with the work or a machining 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 a threshold changing unit that changes a threshold of abnormality detection in the non-machining area to a value lower than a threshold of abnormality detection is the machining area.

Abstract: In a temperature estimation method, a rotational speed of a spindle is acquired. Moreover, a temperature rise table and a temperature fall table are used to calculate a temperature of a bearing from the rotational speed of the spindle every time a fixed time elapses. The temperature rise table stores in an associated manner the rotational speed of the spindle and a temperature rise of the bearing due to rotation of the spindle in a predetermined fixed time. The temperature fall table stores in an associated manner the temperature of the bearing and a temperature fall of the bearing due to heat dissipation in the fixed time.

Abstract: To perform reinforcement learning that enables selecting action information for shortening a cycle time while also avoiding the occurrence of overheating.

Abstract: A position compensation system of a tool changer includes a storage unit for storing a coordinate indicating a reference position of a turret, a rotary position coordinate detector for detecting the rotary position coordinate of the turret, a compensation necessity determiner for determining whether or not it is necessary to perform a rotational compensation to return the turret to the reference position, in accordance with a rotational deviation of the detected rotary position coordinate from the stored rotary position coordinate, and a compensation request part for requesting an operation or work related to the rotational compensation when it is determined that the rotational compensation needs to be performed.

Abstract: A learning model is constructed for adjusting control information so that a cycle time becomes shorter while also avoiding the occurrence of overheating. A learning model construction device includes: an input data acquisition means that acquires, as input data, control information including a combination of an operation pattern of a spindle and parameters related to machining in a machine tool, and temperature information of the spindle prior to performing the machining based on the control information; a label acquisition means for acquiring temperature information of the spindle after having performed the machining based on the control information as a label; and a learning model construction means for constructing a learning model for temperature information of the spindle after having performed machining based on the control information, by performing supervised learning with a group of the input data and the label as training data.

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: In a temperature estimation method, a rotational speed of a spindle is acquired. Moreover, a temperature rise table and a temperature fall table are used to calculate a temperature of a bearing from the rotational speed of the spindle every time a fixed time elapses. The temperature rise table stores in an associated manner the rotational speed of the spindle and a temperature rise of the bearing due to rotation of the spindle in a predetermined fixed time. The temperature fall table stores in an associated manner the temperature of the bearing and a temperature fall of the bearing due to heat dissipation in the fixed time.

Abstract: A tool replacement apparatus according to the present invention includes: a turning tool magazine capable of attaching or removing a tool to/from a spindle of a machine tool; a tool replacement control unit which controls operations of turning the tool magazine and attaching or removing a tool to/from a spindle; and a setting unit which sets a rotatable range of the tool magazine. The tool replacement control unit includes: a determining unit which determines whether or not a designated rotation angle in an instruction for turning the tool magazine is within the rotatable range set by the setting unit; and a unit which stops an operation of replacing a tool when the determining unit determines that a designated rotation angle is out of a rotatable range.

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 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: In order to make it possible to inspect a deteriorated state of a spindle incorporated in a machine tool without disassembling the machine tool, a command for speed V0 is output to the spindle and, when the rotating speed of the spindle reaches V0, power of a spindle motor is interrupted and a timer is started. The spindle continues to rotate with inertia while decelerating. Time T clocked by the timer when the spindle speed decreases to zero is read. When time T is outside a range between the upper and lower limits, the spindle is in the deteriorated state, and an alarm is output. When time T is not greater than the lower limit, the spindle and a bearing of the spindle are deteriorated and friction resistance increases. When time T is larger than the upper limit, oil holding force of grease of the bearing is deteriorated.

Abstract: A learning model is constructed for adjusting control information so that a cycle time becomes shorter while also avoiding the occurrence of overheating. A learning model construction device includes: an input data acquisition means that acquires, as input data, control information including a combination of an operation pattern of a spindle and parameters related to machining in a machine tool, and temperature information of the spindle prior to performing the machining based on the control information; a label acquisition means for acquiring temperature information of the spindle after having performed the machining based on the control information as a label; and a learning model construction means for constructing a learning model for temperature information of the spindle after having performed machining based on the control information, by performing supervised learning with a group of the input data and the label as training data.