摘要:
A droplet-jetting device having high jetting ability, which includes an actuator featuring a liquid chamber and a heater and a controller. The liquid chamber has an aperture for jetting droplets of an operation liquid which the liquid chamber accommodates. The heater provides thermal energy to the operation liquid and forms bubbles for droplet-jetting. The controller controls a driving signal, which is inputted to the heater. The driving signal includes a preparatory heating pulse signal, which corresponds to a preparatory heating energy for preparatory heating of the operation liquid, and a trigger pulse signal, which corresponds to a jetting thermal energy for bubble creation and growth. A power supplied by the preparatory heating pulse signal is smaller than a power supplied by the trigger pulse signal, and a heating duration by the preparatory heating pulse signal is longer than a heating duration by the trigger pulse signal.
摘要:
Plural unit heads are disposed in a paper conveyance direction, and recording head units are configured and disposed in a staggered manner. Head recovery devices are disposed as positions avoiding the locus of splattering of ink droplets from the unit heads. The recording head units can record an image across the entire width of a sheet of paper, and it is not necessary to move the recording head units in the paper width direction. Dummy jetting can be conducted at gap regions between two sheets of paper in an image recording section. The plural unit heads are unitized.
摘要:
A droplet-jetting device having high jetting ability, which includes an actuator featuring a liquid chamber and a heater and a controller. The liquid chamber has an aperture for jetting droplets of an operation liquid which the liquid chamber accommodates. The heater provides thermal energy to the operation liquid and forms bubbles for droplet-jetting. The controller controls a driving signal, which is inputted to the heater. The driving signal includes a preparatory heating pulse signal, which corresponds to a preparatory heating energy for preparatory heating of the operation liquid, and a trigger pulse signal, which corresponds to a jetting thermal energy for bubble creation and growth. A power supplied by the preparatory heating pulse signal is smaller than a power supplied by the trigger pulse signal, and a heating duration by the preparatory heating pulse signal is longer than a heating duration by the trigger pulse signal.
摘要:
A wire bonding apparatus including a capillary, which allows a tip end of a bonding wire to protrude from the bottom, and a discharge electrode, which generates a spark between the electrode and the tip end of the wire by an electrical discharge; and auxiliary electrodes being disposed so as to surround the area between the tip end of the wire and the tip end of the discharge electrode. The end portion of the spark on the wire side is guided onto the axial line of the portion of the wire that protrudes from the capillary by the electric fields from the auxiliary electrodes, and the end portion of the spark on the discharge electrode side is guided onto the axial line of the discharge electrode. Dissociated ions are adsorbed on the auxiliary electrodes, preventing the discharge electrode from being contaminated.
摘要:
A brush body 4 of a metal-graphite brush 2 is composed of a Pb-less commutator side portion 6 which contains graphite, copper and a metal sulfide solid lubricant, and a lead side portion 8 which contains graphite, copper, the metal sulfide solid lubricant and Pb.
摘要:
In the present invention, for an NC program for controlling a machine tool, information for machining quality required by a machine tool is prewritten in the program. A measurement program for measuring the machining quality of the workpiece using a measuring machine is produced by analyzing the NC program. The machining quality of the workpiece is measured by the measurement program and the measuring machine. The machining quality of the workpiece can be judged by comparing the measurement results and the machining quality information included in the NC program. By utilizing this quality judgement, simple and effective system control can be achieved when a system such as CIM (Computer Integrated Manufacturing) is constructed in cooperation with other machine tools.
摘要:
A stencil discharge apparatus for a stencil printing machine has a discharge box for storing a predetermined amount of stencil sheets after being peeled off from a printing drum so as to discharge the stencil sheets. The stencil discharge apparatus includes a compressing device for compressing the stencil sheets discharged into the discharge box through motion of a compressing plate; a compressing pressure sensing device for sensing and outputting a compressing pressure of the compressing means; a moving amount sensing means for sensing and outputting an amount of motion of the compressing plate; and a control device for calculating a storing amount of the stencil sheets in the discharge box on the basis of sensing a predetermined pressure through the compressing pressure sensing device and an amount of motion sensed by the moving amount sensing device.
摘要:
There is here disclosed a movement error compensating device for a movable unit such as a slider in a numerical control machine tool. A laser beam is emitted from a reference position beam generator installed on a fixed base in the movement direction of the slider. The slider is provided with a beam passing position detector, which detects a deviation on YZ planes of the laser beam. In order to properly detect the irradiation direction of the laser beam, the fixed base is equipped with a movement end beam position detector.
摘要:
A method of simulation of NC machining, wherein machining simulation is carried out according to blank shape data, tool shape data and an NC program to modify the NC program or interpolation data by feedforward control so that optimum cutting conditions can be obtained. The simulation result can be used for correcting the NC program and the interpolation data at the next stage. Further, a record of tools used can be generated on the basis of this simulation result.
摘要:
An apparatus and a method for generating orientation action commands of NC machine tools. Workpiece surfaces are grouped according to inclination of the surfaces on the basis of machining information. Optimum orientation angles are decided for each of the groups, and numerical control commands are generated on the basis of the decided orientation angle.