Abstract: A positioning and fixing device positions a work pallet in the vertical and horizontal directions relative to a base member via a ring member, and also restricts its rotation around the vertical axis. The base member has Z reference surfaces that can stop a lower end reference surface of the ring member and position it in the vertical direction, and a tapered male engagement portion whose horizontal cross section is formed as a regular polygon having a plurality of outwardly convex circular arcuate vertex portions and a plurality of side portions, and that reduces in diameter upwards. The ring member has a tapered female engagement portion that can engage with the tapered male engagement portion so that its lower end reference surface is in contact against the Z reference surfaces.

Abstract: A clamp device has a grip member for gripping the inner peripheral surface of a hole in a workpiece, a clamp rod having a tapered shaft portion that is fitted into and engaged with the grip member, a hydraulic cylinder for driving the grip member and the clamp rod forwards and backwards in the axial direction, and a main body member to which the above elements are mounted. A tubular cylindrical main body portion projecting upwards is provided at the center portion of an upper half portion of the main body member. The outer diameter of this tubular main body portion is set less than or equal to three times the outer diameter of the grip member in the unclamped state, and, in the unclamped state, the upper half portions of the grip member and the tapered shaft portion are made to project outward from the upper end of the tubular main body portion.

Abstract: A fluid passage connection device includes a positioning mechanism that incorporates a male coupler attached to a stationary base member and a female coupler attached to a movable member, and that positions the movable member with respect to the base member so that it becomes possible to connect the male and female couplers, and a clamping mechanism that drives the movable member in order to clamp and fix the movable member with respect to the base member by the elastic force of a spring, and that also releases this clamping with the hydraulic pressure of a hydraulic cylinder; and the male coupler has a connection sleeve that is driven to retract by hydraulic pressure and is driven to advance by a spring, with a hydraulic passage being provided that interconnects a hydraulic pressure operation chamber of the connection sleeve and an unclamping hydraulic chamber of the hydraulic cylinder.

Abstract: A clamp device includes a support mechanism that supports a grip member when expanding the diameter thereof, a clamping hydraulic cylinder that can drive the grip member and a clamp rod axially forwards and backwards (up and down), and a main body member to which the grip member, the clamp rod, the support mechanism, and the clamping hydraulic cylinder are mounted, with the grip member, the clamp rod, and the support mechanism being positioned at one end portion of the body member, and with the common axis of the grip member and the clamp rod being offset from the axis of the clamping hydraulic cylinder in a direction orthogonal to the clamp rod.

Abstract: An object positioning/fixing device is capable of generating a clamping force by clamp bolts capable of being fastened manually and realizes high operability of the clamp bolts. A simple clamp mechanism comprises the clamp bolts as major components. The object positioning/fixing device has a cooperative assembly of the positioning mechanism and the clamp bolts.

Abstract: A fixing structure of a spindle balancer for a machine tool is described as having a flange member having a supported surface and provided fixedly to a cylinder body of a gas spring, a supporting member having a flange receiving surface and a fixing hole, and secured to the spindle head of a machine tool, and a plurality of fastening members for fastening the flange member to the supporting member so as to allow the supported surface of the flange member to abut against the flange receiving surface of the support member.

Abstract: In a work pallet positioning and fixing device that positions a work pallet over a base member in the horizontal direction and in the vertical direction and fixes it thereto by pressing forces of clamp bolts, the base member is provided with first and second reference members for positioning, and a reference seating surface and, by making bolt head accommodation holes of bolt holes for four fitting bolts fitting flange portions of the reference members partially overlap with protruding engagement portions as seen in plan view, a plurality of tapered engagement surfaces on the external peripheries of the protruding engagement portions being segmented into four sections.

Abstract: A coupling device which contributes to a further reduction in the space required to transport a die etc., in which first and second joints are simplified in structure and downsized, and that is advantageous when multiple sets of such first and second joints are installed. The coupling device comprises a female joint and a male joint. The female joint is fitted on a mold and comprises a first valve casing, a first valve body, and a first open/close valve having a first valve seat and a first valve portion. The male joint is fitted on a clamping plate of an injection molding machine and comprises a second valve casing, a second valve body, and a second open/close valve having a second valve seat and a second valve portion. The coupling device further comprises a valve body drive unit.

Abstract: A grip member is inserted into an insertion hole of a cylindrical clamp body and is capable of extending outwards to grip the inner circumferential surface of an aperture of an article. A clamp rod is engaged with the grip member; a driving mechanism capable of driving the clamp rod forwards and backwards; a seating surface formed at the top end of the cylindrical clamp body; a case member supporting the cylindrical clamp body movably forwards and backwards; a driving mechanism capable of raising an lowering the cylindrical clamp body; and a lock mechanism having a cylindrical member into which the cylindrical clamp body is inserted so as to slide freely and capable of locking the outer circumferential surface of the cylindrical clamp body by elastically deforming the cylindrical member so as to reduce its diameter.

Abstract: A tool unclamping device is a device capable of unclamping a tool clamped to a spindle of a machine tool, and comprises a casing, an output shaft set on this casing and capable of outputting power necessary for unclamping the tool, a motor serving as a power source capable of supplying power for driving the output shaft, a power transmission mechanism transmitting the power from the motor to the output shaft and a gas cylinder serving as an auxiliary power source capable of supplying auxiliary power to this power transmission mechanism.

Abstract: The ejector device of a molding machine includes: an ejector plate; an ejector drive means for driving the ejector plate in directions to approach towards and to withdraw from a platen; a plurality of rod insertion holes formed so as to pierce through the platen; and a plurality of ejector rods or a plurality of base rods which are base end portions of ejector rods that are inserted into the plurality of rod insertion holes so as to slide freely therein; and a plurality of magnetic rod fixing mechanisms capable of removably fixing the plurality of ejector rods to the ejector plate, or of removably fixing the plurality of detachable rods to the tip end portions of the base rods which are fixed to the ejector plate.

Abstract: In a work pallet positioning and fixing device that positions a work pallet over a base member in the horizontal direction and in the vertical direction and fixes it thereto by pressing forces of clamp bolts, the base member is provided with first and second reference members for positioning, and a reference seating surface and, by making bolt head accommodation holes of bolt holes for four fitting bolts fitting flange portions of the reference members partially overlap with protruding engagement portions as seen in plan view, a plurality of tapered engagement surfaces on the external peripheries of the protruding engagement portions being segmented into four sections.

Abstract: A swing clamp apparatus is provided in which the clamp arm is positioned and attached to a clamp rod at a desired position in a simple and reliable manner and the clamp arm replacement workload is certainly reduced. The swing clamp apparatus comprises an attachment block fixed to the leading end of a clamp rod and to which a clamp arm is detachably attached and a pair of clamping force transmission pins inserted in the attachment block and clamp arm in the direction parallel to the orthogonal direction to the axis for coupling the positioned clamp arm to the attachment block in an integrated manner.

Abstract: A clamp device includes an annular grip member capable of being inserted into an hole in a workpiece and of gripping the inner circumferential surface of the hole, a clamp rod having a tapered shaft portion fitted inside the grip member and engaged therewith, a hydraulic cylinder capable of axially advancing and retracting the grip member and the clamp rod, and a clamp main body member. The clamp device is provided with seating surfaces formed upon the clamp main body member, on which the workpiece is seated, and a poor clamping detection mechanism that detects poor clamping, in the state in which the grip member is driven in its clamping direction by the hydraulic cylinder via the clamp rod, and the workpiece is in its state of being seated upon the seating surfaces.

Abstract: A clamp device includes a grip member, a clamp rod, and a hydraulic cylinder, and, by the grip member being inserted into an hole in a workpiece, it can grip the inner circumferential surface of the hole. The clamp device is provided with: a main body member; seating surfaces formed upon the main body member, upon which the workpiece is seated; a seating sensor that includes a pressurized air ejection hole opening to the seating surfaces; and a workpiece mounting surface that can receive and stop a workpiece at a position that is more advanced than the seating surfaces when the grip member is at an advanced position (its unclamped state), and that shifts together with the grip member during clamp operation when the grip member and the clamp rod shift towards retraction.

Abstract: A method for positioning a work, which is adapted for a knock hole of a small diameter and which can absorb a pitch error between a main positioning hole and an auxiliary positioning hole of the work is disclosed. An insert shaft of a main positioning device is inserted into the main positioning hole. An auxiliary positioning device includes a base lower block having a parallel slide holding surface, a sliding flange having a sliding surface, and an insert shaft disposed above the sliding flange. The sliding flange of the auxiliary positioning device is guided and moved by the slide holding surface, and is inserted, while absorbing the pitch error, into the auxiliary positioning hole, thereby to position the work.

Abstract: A clamping device is capable of engaging a clamping object with an inner wall of hole or side wall of the clamping object. The clamping device 1 is provided with a rod support for moving an engagement portion 25 of a clamping rod 3 in a direction roughly rectangular to the longitudinal direction of the clamping rod 3 and switchably rotatably supports the clamping rod 3 in a clamping main body across a clamping position and a clamp release position, a piston drive mechanism 6 for driving a piston 4 across the clamping position and the clamp release position, and a cam mechanism 7 for driving the engagement portion 25 in the clamping direction by the driving force of piston drive mechanism 6 for driving the piston 4 to the clamping position.

Abstract: The coupling apparatus for bringing a pallet 3 (a movable article) near to a base side support 2 from above, positioning it in the horizontal X, Y directions and in the vertical Z direction, and clamping it in a releasable manner comprises a pair of first engaging protrusions 12 and a pair of second engaging protrusions 13 formed on the top surface of the support 2 for positing in the X direction and in the Y direction, respectively; a pair of first movable article side engaging protrusions 32 each abutting the pair of first engaging protrusions 12 on one side and a pair of second movable article side engaging protrusions 33 each abutting the pair of second engaging protrusions 12 on one side; a Z direction positioning mechanism 8 for positioning the pallet 3 relative to the support 2 in the Z direction; and a clamping mechanism 7 for clamping the pallet 3 on the support 2.

Abstract: Each of a plurality of injection molding machines is provided with clamp plates fixed on platens and a plurality of magnet units to generate magnetic force for fixing a mold to the clamp plate fitted on the clamp plates; and the plurality of injection molding machines are provided with a plurality of common connectors having the same structure, each of which is electrically connected to the magnetic unit, a molding machine control unit and a power source device; and the mold fixing system comprises a set of operation control units to be shared by the plurality of injection molding machines, and when a mold is to be exchanged in any of the injection molding machines, the plurality of magnet units are switched to the non-adsorbing state or the adsorbing state via the operation control unit in the state where the operation control unit is connected to the common connector of the injection molding machine.

Abstract: The magnetic fixing device comprises a clamping plate having a fixing surface to which a clamping object is fixed and plural magnetic force generation mechanisms. The magnetic force generation mechanisms each comprise a magnetic material member facing the fixing surface, plural permanent magnets arranged around the outer periphery of the magnetic material member, a first Alnico magnet placed on the back of the magnetic material member, and a first coil for switching the polarity of the first Alnico magnet, and can be switched between the absorption state in which the clamping object is adsorbed and the non-absorption state in which the clamping object is not adsorbed. An operation state indication mechanism capable of presenting an indicator indicating that the plural magnetic force generation mechanisms are in the absorption state or in the non-absorption state is provided on the fixing surface or outer periphery of the clamping plate.