Abstract: A liquid dispenser head includes nozzles, pressure chambers, an energy generator, a shared chamber, a vibration member, and a specific wall portion. The nozzles discharge liquid. Each of the pressure chambers communicates with a corresponding one of the nozzles. The energy generator, provided for each of the pressure chambers, generates energy for pressurizing liquid in the pressure chamber. The shared chamber supplies liquid to the pressure chambers. The vibration member, forming a wall of each one of the pressure chambers, includes an energy-transmitting area configured to transmit the energy generated by the energy generator to each one of the pressure chambers. The specific wall portion, constituting at least a part of the same wall, or a different wall, of each of the pressure chambers, has a structural compliance set greater than a compression compliance of liquid in the pressure chamber.

Abstract: A machine has a tool head which rotates on a C-axis (about the Z-axis) and an A-axis (about the X-axis). A tool length vector is multiplied by a matrix whereby a misalignment component ?s-H and the incline error (?s-H, ?s-H, ?s-H) of a spindle are corrected so that the tool length vector due to the misalignment of the spindle is obtained. The vector thus obtained is further multiplied by a transformation matrix that includes a rotation instruction ? for the A-axis and misalignments of the A-axis ?a-H (?a-H, ?a-H, ?a-H) to correct the misalignment of the A-axis so that the tool length vector as found when the A-axis has rotated by an equivalent of instruction ? is determined.

Abstract: A work is installed on a table of a machine tool, and the coordinate system on the work is (X?, Y?, Z?). Each three points on respective three faces of the work, which are orthogonal to one another, A, B, C, D, E, F, G, H and I, are detected with a touch probe. From three points on the same plane, each of three formulas of planes which lies on the three points, respectively, are obtained. A position O? (XO, YO, ZO) of a point where the three plane intersect with one another is obtained. This position is a parallel translation error. From these three plane formulas, points on the X?, Y? and Z? axes each being distant from the position O? by the length L are obtained. Rotation matrices are obtained from the respective points, position O? (XO, YO, ZO), and L. Rotary direction errors are obtained using the rotation matrices. In this manner, a work location error which is composed of the three-dimensional parallel translation error and three-dimensional rotary direction errors is obtained.

Abstract: The shapes of machine parts for which the possibility of interference exists are defined as rectangular parallelepipeds and it is judged whether or not there is interference between a first rectangular parallelepiped of a first machine part and a second rectangular parallelepiped of a second machine part. The method involves rotating the first rectangular parallelepiped and second rectangular parallelepiped so that each side of the first rectangular parallelepiped lies parallel to each axis of the reference coordinate system. Interference is thus judged based on whether any vertex of the second rectangular parallelepiped exists within the first rectangular parallelepiped. Likewise, interference is judged depending on whether any vertex of the first rectangular parallelepiped exists within the second rectangular parallelepiped.

Abstract: A liquid drop discharge head includes a nozzle configured to discharge a liquid drop by using a piezoelectric element. Lead ingredients are not included in the piezoelectric element.

Abstract: A work is installed on a table of a machine tool, and the coordinate system on the work is (X?, Y?, Z?). Each three points on respective three faces of the work, which are orthogonal to one another, A, B, C, D, E, F, G, H and I, are detected with a touch probe. From three points on the same plane, each of three formulas of planes which lies on the three points, respectively, are obtained. A position O? (XO, YO, ZO) of a point where the three plane intersect with one another is obtained. This position is a parallel translation error. From these three plane formulas, points on the X?, Y? and Z? axes each being distant from the position O? by the length L are obtained. Rotation matrices are obtained from the respective points, position O? (XO, YO, ZO), and L. Rotary direction errors are obtained using the rotation matrices. In this manner, a work location error which is composed of the three-dimensional parallel translation error and three-dimensional rotary direction errors is obtained.

Abstract: A machine has a tool head which rotates on a C-axis (about the Z-axis) and an A-axis (about the X-axis). A tool length vector is multiplied by a matrix whereby a misalignment component ?s-H and the incline error (?s-H, ?s-H, ?s-H) of a spindle are corrected so that the tool length vector due to the misalignment of the spindle is obtained. The vector thus obtained is further multiplied by a transformation matrix that includes a rotation instruction ? for the A-axis and misalignments of the A-axis ?a-H (?a-H, ?a-H, ?a-H) to correct the misalignment of the A-axis so that the tool length vector as found when the A-axis has rotated by an equivalent of instruction ? is determined.

Abstract: The shapes of machine parts for which the possibility of interference exists are defined as rectangular parallelepipeds and it is judged whether or not there is interference between a first rectangular parallelepiped of a first machine part and a second rectangular parallelepiped of a second machine part. The method involves rotating the first rectangular parallelepiped and second rectangular parallelepiped so that each side of the first rectangular parallelepiped lies parallel to each axis of the reference coordinate system. Interference is thus judged based on whether any vertex of the second rectangular parallelepiped exists within the first rectangular parallelepiped. Likewise, interference is judged depending on whether any vertex of the first rectangular parallelepiped exists within the second rectangular parallelepiped.

Abstract: A door locking device for a microwave oven of the present invention has a latch disposed on the rear surface of a door and pivoted clockwise by the urging force of a spring, and an engaging portion which stops a hook at the distal end of the latch. Upon closing operation of the door, the hook engages with the engaging portion to lock the door. For opening the door, a lock release actuator is moved upward to pivot the latch upward to release the locking state of the latch with the engaging portion.

Abstract: A door locking device for a microwave oven of the present invention has an engaging member arranged inwardly of the cooking chamber of the housing. An arm is arranged at the rear surface side of a door and is biased clockwise by a spring, such that its horizontal state is kept by a stopper and the arm may be pivoted counterclockwise. A locking eccentric cam having a notched engaging portion is mounted at the distal end of the arm so as to be pivotal about a shaft. As the door is opened/closed, the notched engaging portion of the locking eccentric cam is engaged with the engaging member at the side of the housing to eccentrically pivot the locking eccentric cam, thereby locking/unlocking the door.