Fanuc Corporation

Yuuzou Inaguchi

Gaku Isobe

Zheng Tong

Yasuaki Koyama

Takuma Nishimura

Naoki Sato

Shinichi Tanaka

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.

Difference extracting device

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.

Machine tool

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.

Guidance display method

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.

Bearing diagnosing device and bearing diagnosing method

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.

Machine tool and origin point correction method

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.

Temperature estimation device and temperature estimation method

To perform reinforcement learning that enables selecting action information for shortening a cycle time while also avoiding the occurrence of overheating. An action information learning device () includes: a state information acquisition means () for acquiring state information including an operation pattern of a spindle and a combination of parameters related to machining of a machine tool (); an action information output means () for outputting action information including adjustment information for the operation pattern and the combination of parameters included in the state information; a reward calculation means () for acquiring judgment information which is information for temperature of the machine tool () and a machining time related to the machining of the machine tool (), and calculating a value of a reward for reinforcement learning based on the judgment information thus acquired; and a value function update means () for updating a value function by performing the reinforcement learning based on the value of the reward, the state information and the action information.

Action information learning device, action information optimization system and computer readable medium

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.

Position compensation system and position compensation method for tool changer

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:

Learning model construction device, and control information optimization device

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.

Tool replacement apparatus

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 Vis output to the spindle and, when the rotating speed of the spindle reaches V, 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.

Machine tool having inspection function for deteriorated state of spindle

In a sliding door disposed in an opening of a cover surrounding a machine tool, From among two adjacent door panels, at least one of sliding members of the door panel which is located closer to a door frame slides on a door frame guide track, whereas at least one of sliding members of the door panel which is located farther from the door frame slides on the door frame guide track, and at least one of the remaining sliding members slides on the door panel guide track. Thus, guide means can be prevented from projecting vertically.

Sliding door of machine tool

A machine tool has a saddle moving over a bed and a table moving over the saddle. A scattering prevention cover that receives chips generated and a cutting fluid supplied during machining of a workpiece placed on the table is fixed to the table. A first flow path fixed to the saddle receives the chips and cutting fluid discharged from the scattering prevention cover, and a second flow path fixed to the bed receives and discharges the chips and cutting fluid discharged from the first flow path.

Machine tool having scattering prevention cover

A machine tool has a cover comprising a front cover and right and left side covers and includes a first slope part between the front cover and a table on which a workpiece is placed. The first slope part has slopes gradually declining from the center of the front cover toward left and right side covers. Further, the machine tool has also a second slope part that is connected to the left and right lower ends of the first slope part and has slopes declining rearward relative to the machine tool from the side of the front cover. If chips produced by machining are deposited on the surface of the first slope part, they are discharged onto the second slope part and into a contaminated fluid tank by a cutting fluid supplied from a nozzle.

Machine tool with cover adapted for discharge of chips

A cutting fluid passageway that supplies a cutting fluid is disposed in a machining space (inside of a machine tool) of a machining tool isolated by a cover. The cutting fluid passageway is formed so that the upper portion thereof is opened in the passageway direction. Then, the cutting fluid is supplied from the cutting fluid passageway to a workpiece and a tool during machining or to the inside of the machine tool on which scattered chips produced by the processing are accumulated.

Growing community of inventors

Yamanashi, Japan

Yuuzou Inaguchi