Abstract:
In accordance with a component mounting method, a component stored in a component feeder is held by a component holding member and is then mounted in a mounting position on an object. The method includes, when a mounting posture of the component in which the component is mounted onto the object is inclined with respect to a basic posture of the component by a mounting angle, the operation of holding the component from the component feeder by the component holding member that has preliminarily been rotated to the mounting angle in such a direction as to depart from a reference posture of the component holding member prior to the mounting of the component on the object. And afterwards, the component holding member is rotated in a specified direction to finally return the component holding member to the reference posture, and then the component is mounted on the object.
Abstract:
An injection molding machine includes a plasticating unit for plasticating a thermoplastic resin, and an injecting unit connected to the plasticating unit through a connecting passage to inject the plasticated resin into a mold. In the connecting passage, provided is a buffering unit for reserving the resin in an amount at least equal to the quantity of the resin injected per one shot. The plasticated resin is temporarily reserved in the buffering unit, and then, the reserved resin is fed to the injecting unit when the measuring is carried out, whereby the plasticating unit can be driven continuously simultaneously with the operation of the injecting unit and the mold. The molding cycle can shortened with the plastication efficiency being enhanced.
Abstract:
In accordance with a component mounting method, a component stored in a component feeder is held by a component holding member and is then mounted in a mounting position on an object. The method includes, when a mounting posture of the component in which the component is mounted onto the object is inclined with respect to a basic posture of the component by a mounting angle, the operation of holding the component from the component feeder by the component holding member that has preliminarily been rotated to the mounting angle in such a direction as to depart from a reference posture of the component holding member prior to the mounting of the component on the object. And afterwards, the component holding member is rotated in a specified direction to finally return the component holding member to the reference posture, and then the component is mounted on the object.
Abstract:
A full charge condition of a battery is determined based on a battery temperature gradient computed at every sampling time based on two values of detected battery temperatures. However, the battery temperature detected when the level of a charge current is switched does not exhibit an accurate temperature of the battery due to contact resistance existing in contact portion of a battery side terminal and a charger side terminal, resulting in inaccurate detection of the full charge condition. A microcomputer corrects the battery temperatures detected after the level of the charge current is switched and the full charge determination is made through computation of the battery temperature gradient using the corrected battery temperatures.
Abstract:
A DC power source unit supplies a DC voltage to an electrically powered tool through an adapter and also charges a battery pack used as an alternative power source of the tool. With the DC power source unit of the invention, charging of the battery pack is stopped and supply of power to the tool is started instantaneously when the power switch of the tool is turned ON. The DC power source unit is also capable of outputting selective one of different drive voltages corresponding to the rated drive voltages of a variety of different tools and capable of charging battery packs with different battery voltages.
Abstract:
An adapter includes a cord, a fitting portion, a voltage setting unit, and a fitting prevention mechanism. The cord is adapted to connect to a DC power source unit in order to receive DC voltage from the DC power source unit. The fitting portion is for insertion into the battery holding space of any one of a plurality of cordless power tools. The fitting portion receives the DC voltage received through the cord and supplies the DC voltage to a cordless power tool in which the fitting portion is properly inserted. The voltage setting unit is for setting voltage supplied through the fitting portion to the cordless power tool. The fitting prevention mechanism operates in linked association with operation of the voltage setting unit to prevent proper insertion of the fitting portion into a cordless power tool that has a rated voltage different from the voltage set by the voltage setting unit.
Abstract:
A method of controlling a mounting unit having a shaft operated under servo control using a current driven actuator, comprises the steps of detecting interrruption of the servo control, and switching from a positioning control mode to a constant current control mode for supplying an constant amount of current to the shaft actuator to suspend the shaft. In an embodiment the method further includes engaging a gripping device, for holding the shaft, so as to keep the shaft from free-falling when interruption of the servo control is detected, and maintaining the constant current control mode at least until the gripping device grips the shaft. Still further, the current control mode optionally includes the steps of maintaining the supply of the constant amount of current for a predetermined period of time, and disengaging power supplied to the actuator after the predetermined period of time has elapsed.
Abstract:
A control device controls to move a chucking mechanism part to a first stop height 451 at a first speed, then at a second speed lower than the first speed before the chucking mechanism part comes in touch with a part from the first stop height, and stop when the chucking mechanism part touches the part, thereby to hold the part. So, a shock to the part when the part is held is reduced in the constitution, and the apparatus becomes light-weight because of the elimination of a shock-absorbing mechanism, hence realizing high-speed mounting.
Abstract:
Elements comprising a non-oriented substrate and a thin film of a compound of the following general formulaLa.sub.1-x-y Sr.sub.x Ba.sub.y MeO.sub.3-.delta.in which 0.ltoreq.x.ltoreq.0.8, 0.ltoreq.y.ltoreq.0.5, 0.1.ltoreq.x+y.ltoreq.0.8, and 0.ltoreq..delta..ltoreq.0.5 and Me is at least one member selected from the group consisting of Mn, Fe and Co. The film is crystallographically oriented in a certain direction The substrate is made of an amorphous material or a metal, or is constituted of an amorphous film formed on any bodies such as of a polycrystalline material. On the oriented thin film is further formed a perovskite oxide film or a superconductive film. The process for making the thin film of the above formula is also described.
Abstract:
A heat storage material is described which comprises a mixture of sodium sulfate decahydrate or sodium thiosulfate pentahydrate, and urea. The mixing ratio by mole of the sulfate decahydrate to urea is in the range of 1:1 to 1:3 and the mixing ratio by mole of the thiosulfate pentahydrate to urea is in the range of 1:2 to 1:8.