Abstract: A machine tool equipped with a robot includes a stocker which has one or more effector holder units for holding an end effector to be mounted on the robot, in which the stocker can be stored within a casing of the machine tool. At least a part of the stocker is configured to be bilaterally advanceable into a machining chamber of the machine tool and an external region located outside the machine tool.

Abstract: Provided is a tool magazine apparatus that has excellent workability and is capable of being downsized. A tool replacement device includes a fixed frame installed in an opening portion provided at a predetermined position of a tool magazine, a swivel frame disposed inside the fixed frame so as to be rotatable about a swivel axis extending in a vertical direction, and a tool replacement rack fixed to the swivel frame. The swivel frame is rotated to a deliverable position at which the tool replacement rack is parallel to a tool rack inside the tool magazine to enable a tool to be delivered between the tool replacement rack and a tool transfer device, and to a replaceable position at which the tool replacement rack is located outside the tool magazine to enable replacement of old and new tools.

Abstract: A displacement compensation device for a machine tool includes a temperature information acquiring unit, a floor information acquiring unit, a displacement amount computing unit, and a compensating unit. The temperature information acquiring unit acquires temperature information from a temperature sensor. The floor information acquiring unit acquires floor information using a floor state sensor measuring a state of a surface or an inside of a floor on which a machine tool is installed. The displacement amount computing unit calculates an estimated displacement amount of the machine tool with a preset displacement estimation formula using the temperature information acquired by the temperature information acquiring unit and the floor information acquired by the floor information acquiring unit as inputs. The compensating unit compensates an axis command value based on the estimated displacement amount calculated by the displacement amount computing unit.

Abstract: Provided is a tool pot overcoming a problem that dirt adhered to the tool pot is transferred to a contact face of a tool. A tool pot includes an inner-periphery holding part that holds an inner periphery of a tapered shank and prevents axial movement of a tool, an end-face holding part that prevents rotation of the tool, which is implemented by a key fitted into a keyway provided at an end surface of the tapered shank, and an outer-periphery holding part that is opposed to an outer periphery of the V-flange and prevents radial movement of tool. The inner-periphery holding part, the end-face holding part, and the outer-periphery holding part hold the tool in a state where there are clearances with respect to an outer peripheral surface of the tapered shank and an end face of the V-flange, respectively.

Abstract: A numeric value control unit outputs a connection diagnostic signal to a target position switching unit to place the three-phase motor in a position at an angle that causes no torque generation upon application of a diagnostic current to the three-phase motor, and thereafter, outputs a connection diagnostic signal to a current instruction switching unit to apply a diagnostic current. Then, in order to apply a diagnostic current to the other two phases, the three-phase motor is placed in a position at an angle that causes no torque generation upon second application of a diagnostic current, and a diagnostic current is thereafter applied. When a diagnostic current is applied twice and in the case where no defect in connection is detected in either application, it is determined that connection is normal. Meanwhile, in the case where connection is detected once or twice, it is determined that connection is defective.

Abstract: A machine tool equipped with a robot includes a stocker which has one or more effector holder units for holding an end effector to be mounted on the robot, in which the stocker can be stored within a casing of the machine tool. At least a part of the stocker is configured to be bilaterally advanceable into a machining chamber of the machine tool and an external region located outside the machine tool.

Abstract: A machining accuracy diagnosing device includes a diagnosing information acquiring, an opening time setting unit, a cutting time setting unit, and a machining accuracy influence amount predicting unit. The diagnosing information acquiring unit acquires at least one of a room temperature inside the plant, a set temperature of a temperature regulating device, an air temperature outside the plant, a wind speed outside the plant, an opening degree of the door or the shutter, and a machine body temperature. The opening time setting unit sets an opening time of the door or the shutter. The machining accuracy influence amount predicting unit predicts an influence amount of opening of the door or the shutter on the machining accuracy based on the acquired information for diagnosis, the set opening time of the door or the shutter, and a set scheduled machining start time and a set scheduled machining end time.

Abstract: A machine tool includes a lower tool post for holding a cutting tool, a tool main spindle for holding a cutting tool, a storage unit capable of storing the cutting tool, an exchange mechanism for exchanging the cutting tools between the tool main spindle and the storage unit, an inside robot for exchanging the cutting tools between the lower tool post and the tool main spindle, and a controller. The controller performs control such that the cutting tools are exchanged between the lower tool post and the storage unit via the inside robot, the tool main spindle, and the exchange mechanism.

Abstract: The collecting mechanism includes a holding unit and a controller. The holding unit has a pair of arms, and can sandwich a machined portion with the pair of arms. The holding unit can be switched between a holding state and a standby state. In the holding state, the pair of arms is closed to be in contact with the circumferential surface of the machined portion to sandwich the machined portion. In the standby state, the pair of arms is opened so as to stay near the circumferential surface of the machined portion with a space between the arms and the circumferential surface of the machined portion. The controller monitors whether cutting-off of the machined portion has been completed to keep the holding unit in the standby state before completion of the cutting-off and to switch the holding unit from the standby state to the holding state at the time of completion of the cutting-off.

Abstract: A machining accuracy diagnosing device includes a temperature regulation operating pattern setting unit, a cutting condition setting unit, a temperature information acquiring unit, and a machining accuracy influence amount predicting unit. The temperature regulation operating pattern setting unit sets an operating pattern of a temperature regulating unit. The cutting condition setting unit sets a scheduled machining start time and a scheduled machining end time. The temperature information acquiring unit acquires an influencing temperature of the temperature regulating unit on the machine body temperature and/or an air temperature outside the plant.

Abstract: A power calculation apparatus includes a power measurement unit configured to measure alternating-current electric power input to a converter unit to obtain measured power, power consumption estimation units configured to estimate power consumption on motor axes of corresponding motors, respectively, using parameters concerning the motors, to obtain estimated power for each motor axis, and a power consumption calculation unit configured to distribute the measured power obtained by measurement according to a ratio in accordance with the estimated power obtained by estimation to calculate power consumption for each motor axis.

Abstract: A thermal displacement correction method is provided, including a first step of setting an initial tool temperature, a second step of estimating a temperature of a tool or a position measurement sensor based on the initial tool temperature and a temperature of a spindle, a third step of estimating an amount of thermal displacement of the tool or the position measurement sensor with a preliminarily set tool thermal displacement estimation formula based on the estimated temperature, and a fourth step of moving a feed shaft of the machine tool based on the estimated amount of thermal displacement to perform a correction. In the second step, the temperature of the spindle is measured, then a tool-mounted portion temperature of the spindle is estimated from the measured temperature.

Abstract: A correction value measurement method includes, measuring a position of a reference sphere, calculating a relative position of the reference sphere with respect to a sensing position from the position of the reference sphere, a length of the position measurement sensor, and a length of the reference tool. The method further includes acquiring a reference tool position as a distal end position of the reference tool using, calculating a length direction correction value of the position measurement sensor from the reference tool position, the position of the reference sphere, the relative position, and a length of the reference tool, and measuring the position of the reference sphere to calculate a radial direction correction value of the position measurement sensor.

Abstract: A machine tool is configured to machine a workpiece by rotating a tool and/or the workpiece. The machine tool includes a natural frequency changing unit configured to change a natural frequency before machining or during machining in the tool or a supporting portion supporting the tool.

Abstract: A machine tool system is disclosed which can shorten time required for generating a robot program even for a machine tool user who has no experience in using a robot. A machine tool controller includes an operation panel and an interactive program generator, and sets an operation parameter of the robot using a template screen prepared for each stylized operation of the robot. The interactive program generator generates a robot preprogram using the set operation parameter, reads the robot preprogram during execution of a machine tool program, and transfers the program to a robot preprocessor. The robot preprocessor interprets the robot preprogram and outputs a control command to a robot controller.

Abstract: A control device for a machine tool in which a tool used to machine a workpiece is mounted to a main spindle that is relatively movable with respect to the workpiece. The control device includes: a parameter preparing unit that stores a predetermined parameter regarding a control in advance; an evacuation unit that causes the tool to perform an evacuation operation from the workpiece; and a chip discharging unit that causes the tool to perform a chip discharging operation. The evacuation operation of the tool by the evacuation unit and the chip discharging operation by the chip discharging unit are performable at respective predetermined timings.

Abstract: A tap phase detection method includes: acquiring a relation between a rotation angle and an existence of a screw thread by measuring a position of the screw thread of a tap with a sensor from a direction intersecting with an axial direction of the tap while rotating the tap; and detecting a phase of the tap based on the acquired relation between the rotation angle and the existence of the screw thread.

Abstract: A turning method for performing a turning on a workpiece in a machine tool includes: feeding a tool in a rotation axis direction and/or a radial direction of a workpiece while rotating the workpiece, the tool including an insert having a side cutting edge, the side cutting edge including a straight line portion; and feeding the tool in the rotation axis direction and the radial direction and in a predetermined inclined direction that is non-parallel to a final machining surface of the workpiece, so as to perform a turning such that a cutting edge angle as an angle formed by the straight line portion of the side cutting edge and the inclined direction becomes less than 90°.

Abstract: A control device for a machine tool includes a tool mounted on a main spindle relatively movable with respect to a workpiece and machines the workpiece using the tool. The control device includes: a parameter preparing unit, an evacuation unit, and an evacuation diagnosing unit. The parameter preparing unit preliminarily stores a predetermined parameter relating to a control. The evacuation unit causes the tool to perform an evacuation operation from the workpiece. The evacuation diagnosing unit diagnoses whether the evacuation operation is normal. When the evacuation diagnosing unit diagnoses that the evacuation operation is abnormal, the evacuation operation is cancelled.

Abstract: Provided is an automated pallet changer in machine tool which enable miniaturization and cost reduction. A drive unit in the automatic pallet changer includes a planetary reduction gear. The planetary reduction gear has a first output shaft and a second output shaft in which, by fixing one of the first and second output shaft, the other functions as an output shaft for driving. The first output shaft is used to pivot the pivoting frame, and the second output shaft is used to move the carry-in/out arm back and forth.