Abstract: The present invention provides a tool holder attachment structure that allows a tool holder to be firmly attached to the main shaft of a machining tool and that allows the use of general-purpose tool holders with simple structures.

Abstract: The present invention provides a clamp system for securing a workpiece. The structure of oil paths formed in a base plate is simplified while maintaining good guiding ability of a piston rod of a hydraulic cylinder. Also, the ratio of the work area relative to the surface of the base plate is increased.

Abstract: The present invention provides a multi-layer resin film having excellent oxygen gas barrier properties, particularly even at high humidity, and further having no chlorine content. The multi-layer resin film of the present invention has a biaxially-stretched polypropylene resin film, an adhesive layer formed on at least one surface of the polypropylene resin film, and a polyvinyl alcohol resin layer formed on the adhesive layer, wherein the polyvinyl alcohol resin layer has a value of crystallinity parameter (CP (M//) ⊥) not less than 0.8. The multi-layer resin film of the present invention can be prepared by forming an adhesive layer on at least one surface of an unstretched polypropylene resin film; stretching the film in one direction; forming a polyvinyl alcohol resin layer on the adhesive layer; and stretching the film in another direction perpendicular to the direction of previous stretching.

Abstract: Fluid pressure cylinder 1 with pressure intensifying function, consisting of oil-filled hydraulic pressure cylinder 2 which is filled with oil L and tightly sealed and gas-filled gas spring 3 which is charged with gas G and tightly sealed, wherein, by means of gas spring 3, oil L in oil chamber 11 of hydraulic pressure cylinder 2 is pressurized to a pressure level higher than the gas pressure in gas actuating chamber 21 of gas spring 3 and a strong pushing force is generated via output piston 12 of hydraulic pressure cylinder 2.

Abstract: A clutch-brake device is provided on a driving force delivery system delivering a driving force, inputted to a fly wheel of a mechanical press, to a crank shaft. A stationary member rotationally supports the fly wheel. A rotation shaft has at least one part rotationally supported by the stationary member and transfers the driving force to the crank shaft. A multi-disk clutch is provided between a case member affixed to the fly wheel and a rotation input part of the rotation shaft. A multi-disk brake is provided between the stationary member and the rotation input part of the rotation shaft. A fluid pressure cylinder rotates as a unit with the fly wheel and switching the multi-disk clutch and the multi-disk brake. An output part, on the piston member of the fluid pressure cylinder, delivers the pushing force of the piston member to a clutch plate which rotates as a unit with the case member.

Abstract: Roller member connectors facilitate quick change of tools used by robot hands. Each roller member includes a pair of projections on either side thereof. On the inner surface of each retainer opening, a pair of guide grooves are formed to guide the projections so that they are retained during operation.

Abstract: The present invention provides a multi-layer resin film having excellent oxygen gas barrier properties, particularly even at high humidity, and further having no chlorine content. The multi-layer resin film of the present invention has a biaxially-stretched polypropylene resin film, an adhesive layer formed on at least one surface of the polypropylene resin film, and a polyvinyl alcohol resin layer formed on the adhesive layer, wherein the polyvinyl alcohol resin layer has a value of crystallinity parameter (CP (M//) ⊥) not less than 0.8. The multi-layer resin film of the present invention can be prepared by forming an adhesive layer on at least one surface of an unstretched polypropylene resin film; stretching the film in one direction; forming a polyvinyl alcohol resin layer on the adhesive layer; and stretching the film in another direction perpendicular to the direction of previous stretching.

Abstract: Thermal recording media each having as a support or a part thereof, a void-containing polyolefin film with a void volume of from 10 cc to smaller than 40 cc per 100 g of the film. The thermal recording media can attain the excellent advantages that they have high resolving power, they can give high-density and distinct images recorded even with very small printing energy, they have high delamination resistance, i.e., they are not easily delaminated by adhesive tape or others, and they have high opacifying power and high elasticity.

Abstract: A clamping device for fixing a die on the setting surface of a lateral injection molding machine comprises a clamp main body, plural clamping hydraulic cylinders installed in the output portion at the front end portion of the clamp main body, and a guide mechanism for guiding the clamp main body movably only in the longitudinal direction without separate from the setting surface, in which the clamp main body can be freely changed over in position with respect to the setting surface in the released state, so that it may not be dislocated from the setting surface. The lower base portion of the clamp main body can be divided as a base member to be fixed on the setting surface.

Abstract: A clamping device for fixing a die on the setting surface of a lateral injection molding machine comprises a clamp main body, plural clamping hydraulic cylinders installed in the output portion at the front end portion of the clamp main body, and a guide mechanism for guiding the clamp main body movably only in the longitudinal direction without separate from the setting surface, in which the clamp main body can be freely changed over in position with respect to the setting surface in the released state, so that it may not be dislocated from the setting surface. The lower base portion of the clamp main body can be divided as a base member to be fixed on the setting surface.

Abstract: A clamping device for clamping a work piece to be machined by a machine tool on a base surface of a table of the machine tool or a work pallet for fixing a work piece, comprises at least a clamp main body, a reaction support provided at the rear portion of the clamp main body, an input member disposed in front of the reaction support on the clamp main body with a gap therebetween, an output member arranged in front of the input member and having an output portion for clamping the work piece at the front end, a guide mechanism for slidably guiding the output member in a longitudinal direction directed back and forth, a driving mechanism for driving the input member toward the clamp main body, and a wedge type converting mechanism for converting a driving force supplied to the input member from the driving mechanism into a clamping force for driving the output member.

Abstract: The present invention relates to a workpiece pallet changer which changes a work pallet fitted on a pallet positioning device on the table of a machine tool. The changer comprises a moveable pallet mounting assembly disposed at plural locations along the peripheral surface of a rotatable frame, each of which engages a work pallet to permit transfer of the work pallet between the pallet mounting assembly located on the surface of the rotatable frame and the pallet positioning device, while simultaneously allowing chips fall automatically from the work pallet as it rotates downward.

Abstract: A work-clamping unit includes a base plate in which hydraulic cylinders are totally embedded, each cylinder including a piston vertically movable beneath the top surface of the base plate, the piston being adapted to carry a clamping member detachably connected thereto so as to transmit a clamping force from the piston to the clamping member, the base plate additionally including an oil path for feeding hydraulic pressure to each of the cylinders.

Abstract: A die lifter unit comprises a rolled metal section of inverted open-topped rectangular shape which is floatably supported on heavy duty springs in a groove extending along the top surface of the bolster, the section carrying a roller for supporting the die.