Abstract: An electrical device includes a rear chassis, a fastening member, and an attachment member. The rear chassis has a through-hole. The fastening member is disposed inside the rear chassis. The fastening member has a threaded hole. The attachment member retains the fastening member relative to the rear chassis. The attachment member has a first engaging part that engages with an internal portion of the rear chassis. The screw extends through the through-hole of the rear chassis and screwed into the threaded hole of the fastening member for attaching a wall-mount fixture to an external portion of the rear chassis.

Abstract: The present invention relates to a stand for supporting a thin display unit, such as a liquid crystal display, upright. In order to provide the stand for the display unit in which a quadrangular rubber pad is attached in a not-easily removable state with a simpler structure, rubber pad attachment portions are provided, each rubber pad attachment portion (2) including a quadrangular frame rib (21) to which each quadrangular rubber pad (4) is attached and being formed into a quadrilateral in a plan view, an abutment rib which regulates a fitting depth of the rubber pad and abuts with the rubber pad in a predetermined abutment area is provided in each rubber pad attachment portion, and evacuation spaces (5(5A to 5D)) allowing further fitting of the rubber pad are provided at positions corresponding to four corners of the rubber pad (4) where the abutment rib is not provided.

Abstract: For specifying a cause of generation of a water level abnormality alarm in a wire-cut electric discharge machine, stopping supply of a machining liquid to a machining tank when the alarm is generated, draining the liquid; measuring an amount of change in the water level per unit time that is detected by the water level detecting unit; and displaying a question to an operator about the measured amount of change in water level and the state of a water level adjusting mechanism. The operator manually inputs an answer to the displayed question, and specifies, from the answer input by means of the inputting unit, a part which causes the generation of the alarm.

Abstract: A cable holding structure including a plurality of ribs 51 (52) stand on an inner surface of a housing 3, and holing cables 41, 43, wherein the ribs 51 (52) are arranged on a closed figure formed on the inner surface of the housing 3 at predetermined gaps (50) between the neighboring ribs 51 (52).

Abstract: This invention relates to a stand attachment structure for attaching a stand that supports a low-profile display unit, such as a liquid crystal display, in an upright position, and to a rear cabinet. In the rear cabinet (1), a stand mounting part (10) including a temporal fixing means (13) is provided to allow temporal fixation of a stand (5) to the rear cabinet (1). The stand mounting part (10) includes a hook (11) for retaining the stand (5) in a predetermined orientation, and a reinforcing rib (12) having functions of reinforcing the hook and of guiding an engagement tab (52) disposed on the stand (5) for insertion. Then, the stand (5) is temporarily fixed to a display unit (P) by engaging the engagement tab (52) disposed on the stand (5) with the hook (11), and finally secured to the display unit (P) with a set screw (B1) after temporal fixing.

Abstract: The present invention relates to a stand for supporting a thin display unit, such as a liquid crystal display, upright. In order to provide the stand for the display unit in which a quadrangular rubber pad is attached in a not-easily removable state with a simpler structure, rubber pad attachment portions are provided, each rubber pad attachment portion (2) including a quadrangular frame rib (21) to which each quadrangular rubber pad (4) is attached and being formed into a quadrilateral in a plan view, an abutment rib which regulates a fitting depth of the rubber pad and abuts with the rubber pad in a predetermined abutment area is provided in each rubber pad attachment portion, and evacuation spaces (5(5A to 5D)) allowing further fitting of the rubber pad are provided at positions corresponding to four corners of the rubber pad (4) where the abutment rib is not provided.

Abstract: When a wire electrode is arranged along a traveling path by manual operation, a motor M1 for feeding the wire electrode to a workpiece is driven in response to a predetermined torque command from a control section with a switch SW1 on a side a. The wire electrode is connected, and a motor M2 for delivering the electrode from the wire is driven at a predetermined speed, whereby the electrode is run. Then, the switch SW1 is shifted to a side b and a switch SW2 to the side a, and the motor M1 is subjected to torque control such that a tension on the wire electrode detected by a tension detector is equal to a command tension. When a variation of the tension on the wire electrode is converged, the switches SW1 and SW2 are shifted to the side b, speed control of the motor M1 is performed so that detected tension is equal to the command tension, and electric discharge machining is started.

Abstract: A seal structure channels drainage of machining fluid from the periphery of an opening for a lower arm of a wire-cut electric discharge machine. The seal structure restricts flowage to the outside of machining fluid through the opening (slot) in a side of a machining tank and has a first seal and a second seal (a seal plate) affixed to the first seal so as to cover the opening. An unevenly shaped part including ridges and grooves extending in the long direction of the first seal is formed on the first seal, and passages are provided that communicate with the groove and the outside to channel the machining fluid drainage path. The first seal may be composed of a plurality of members. A suction device sucks up machining fluid draining from the passages.

Abstract: For specifying a cause of generation of a water level abnormality alarm in a wire-cut electric discharge machine, stopping supply of a machining liquid to a machining tank when the alarm is generated, draining the liquid; measuring an amount of change in the water level per unit time that is detected by the water level detecting unit; and displaying a question to an operator about the measured amount of change in water level and the state of a water level adjusting mechanism. The operator manually inputs an answer to the displayed question, and specifies, from the answer input by means of the inputting unit, a part which causes the generation of the alarm.

Abstract: A wire electric discharge machine capable of maintaining machining-fluid temperature in a machining tank uniformly, even when the state of machining changes, for example between rough machining and finish machining. A first temperature sensor for detecting the machining-fluid temperature in a clean-fluid tank is provided to the clean-fluid tank or a machining-fluid cooling device. A second temperature sensor for detecting the machining-fluid temperature in the machining tank is provided. On the basis of machining conditions, etc., a controller of the wire electric discharge machine selects the second temperature sensor in machining producing much heat such as rough machining, and selects the first temperature sensor in machining producing little heat such as finish machining. The machining-fluid cooling device performs cooling control on the machining fluid in the clean-fluid tank based on the temperature detected by the selected temperature sensor.

Abstract: When a wire electrode is arranged along a traveling path by manual operation, a motor M1 for feeding the wire electrode to a workpiece is driven in response to a predetermined torque command from a control section with a switch SW1 on a side a. The wire electrode is connected, and a motor M2 for delivering the electrode from the wire is driven at a predetermined speed, whereby the electrode is run. Then, the switch SW1 is shifted to a side b and a switch SW2 to the side a, and the motor M1 is subjected to torque control such that a tension on the wire electrode detected by a tension detector is equal to a command tension. When a variation of the tension on the wire electrode is converged, the switches SW1 and SW2 are shifted to the side b, speed control of the motor M1 is performed so that detected tension is equal to the command tension, and electric discharge machining is started.

Abstract: A wire electrode supply device for a wire-cut electric discharge machine that prevents a wire electrode from departing from a wire traveling path using a simple configuration. A wire bobbin is driven in a reverse direction of a wire feed direction by a torque motor to apply tension to the wire electrode. A velocity detector that detects a rotation velocity of the wire bobbin is provided. The wire electrode is laid along the wire traveling path that includes a guide roller, a brake roller, upper and lower guides, and a wire take-up roller, during which, when the wire electrode is fed out from the wire bobbin, if a velocity detected by the velocity detector meets or exceeds a predetermined velocity, the output torque of the torque motor 3 is increased so that inertial force of the wire bobbin causes the wire electrode to slacken, thus preventing the wire electrode from departing from the wire traveling path.

Abstract: A wire electric discharge machine capable of maintaining machining-fluid temperature in a machining tank uniformly, even when the state of machining changes, for example between rough machining and finish machining. A first temperature sensor for detecting the machining-fluid temperature in a clean-fluid tank is provided to the clean-fluid tank or a machining-fluid cooling device. A second temperature sensor for detecting the machining-fluid temperature in the machining tank is provided. On the basis of machining conditions, etc., a controller of the wire electric discharge machine selects the second temperature sensor in machining producing much heat such as rough machining, and selects the first temperature sensor in machining producing little heat such as finish machining. The machining-fluid cooling device performs cooling control on the machining fluid in the clean-fluid tank based on the temperature detected by the selected temperature sensor.

Abstract: A lower arm is passed through a slot in a machining tank. The slot of the machining tank is provided with a seal section for sealing with a plate-shaped seal member. The movable table is moved by a servomotor. The machining tank and a workpiece are fixed on the movable table. At the seal section, a seal member on the machining tank side slides with respect to the plate-shaped seal member, thereby generating a sliding resistance. This sliding resistance increases as a sludge produced by electric discharge adheres to the seal section, thereby distorting the lower arm and influencing the machining accuracy. Accordingly, a load that acts on the servomotor is detected, and a sliding resistance load at the seal section is obtained. When a reference load is exceeded by the detected resistance load, arrival of the seal section at the timing for maintenance is displayed and notified.

Abstract: A wire electrode supply device capable of preventing slack and snapping of a wire electrode even using a heavy wire bobbin without using a wire electrode tension detector. A pulley is provided between the wire bobbin driven by a torque motor and a brake roller. The wire electrode unwinds from the wire bobbin, passes through the pulley, brake roller and a workpiece work area, and is taken up by a wind-up roller. When the wire electrode traveling speed is changed from fast to slow, the pulley descends to prevent the wire electrode from slackening between the wire bobbin and the brake roller. When the traveling speed is changed from slow to fast, the back tension from the torque motor is reduced for a predetermined period of time, reducing tension on the wire electrode and preventing it from snapping.

Abstract: A controller for a wire cut electric discharge machine which can provide stable finish machining and corner-region machining with high corner-form accuracy. An electric discharge gap detection device detects a voltage between a wire electrode and a workpiece. A machining rate detection device obtains an average machining voltage and a drop voltage value Ex which is a difference between the obtained average machining voltage and a no-load voltage. A comparison device obtains the ratio Es/Ex between a reference drop voltage value Es stored in a reference machining rate relative value storage device and the obtained drop voltage value Ex.

Abstract: A machine tool having movable axes driven by linear motors has a brake unit disposed in parallel with each linear motor. When the linear motors are not excited, the brake units are turned on to lock the movable axes. When the linear motors are excited, if a machining signal is off, indicating that machining is not in progress, and no manual command is issued, the brake units are likewise turned on to lock the movable axes. The brake units have a certain amount of play so that even when locked, a movable axis can move by a certain amount to enable the linear motor, if excited, to halt in a stable position, avoiding overcurrent flow.

Abstract: A temperature sensor for detecting a machining liquid temperature in a machining tank is provided. A machining liquid cooling device controls machining liquid in a clean water tank based on the temperature detected by the temperature sensor and returns the machining liquid to the clean water tank. The machining liquid in the clean water tank is supplied to the machining tank and wire guides through pumps. Because the machining liquid temperature in the clean water tank is controlled based on the machining liquid temperature in the machining tank, it is possible to maintain the machining liquid in the machining tank substantially at a target temperature, even though the machining liquid is supplied after heated by the pumps.

Abstract: A wire-cut electric discharge machine which improves contact between a wire electrode and a conducting member without deforming the wire electrode to suppress production of minute electric discharges and reduce unnecessary loads on the wire electrode and the wire-cut electric discharge machine, and which makes it easy to make space on a wire traveling path to carry out automatic wire connection easily. In a wire-cut electric discharge machine having a conducting member for supplying an wire electrode with electric power for electric discharge machining, and making the wire electrode travel along a traveling path, sliding on the conducting member, a movable member capable of being moved nearer to and away from the conducting member is provided in a position opposite to the conducting member relative to the traveling path. By this arrangement, the contact between the wire electrode and the conducting member can be always kept without deforming the wire electrode.