Abstract: A positioning mechanism in a positioning and clamping device includes an annular tapered surface that is formed on an outer periphery of a cylindrical shaft for positioning a pallet in the horizontal direction, and has a decreasing diameter toward an axial tip of the cylindrical shaft. An annular engaging mechanism, which is formed on an inner periphery side portion of an annular engagement member, is engageable with the annular tapered surface, and is elastically deformed in the radial direction, as a result of engagement with the annular tapered surface. The engaging mechanism has a tapered ring portion, which makes a face contact with the annular tapered surface, and multiple ribs extending outward, radially, from the tapered ring portion.

Abstract: A clamp device includes a first clamp head movable but restricted in movement in a perpendicular direction that is at right angles to a travel direction, and serving as a reference side, a second clamp head movable in a direction coming closer to and in a direction farther away from the first clamp head, capable of clamping a workpiece located between the first and second clamp heads, and tiltable and/or slidable in the perpendicular direction, and a drive unit driving the first and second clamp heads. The workpiece is clamped with the first and second clamp heads by moving the first and second clamp heads in a direction coming closer to each other.

Abstract: Intended is to provide a method for positioning a work (15), which is adapted for a knock hole of a small diameter and which can absorb a pitch error between a main positioning hole (16) and an auxiliary positioning hole (17) of the work (15). An insert shaft (21) of main positioning means 820) is inserted into the main positioning hole (16). Auxiliary positioning means (30) includes a base lower block (36) having a parallel slide holding surface (36e), a sliding flange (34b) having a sliding surface (34c), and an insert shaft (31) disposed above the sliding flange (34b). The sliding flange (34b) of the auxiliary positioning means (30) is guided and moved by the slide holding surface (36e), and is inserted, while absorbing the pitch error, into the auxiliary positioning hole (17), thereby to position the work (15).

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: In the positioning and clamping device (3), a positioning mechanism (13) has an annular tapered surface (40) that is formed on the outer periphery of a cylindrical shaft (10b) for positioning a pallet (1) in the horizontal direction, and has a decreasing diameter toward the axial tip of the cylindrical shaft (10b), and an annular engaging mechanism (41), which is formed on the inner periphery side portion of an annular engagement member (11), to engage with the annular tapered surface (40), and is elastically deformed in the radial direction, as a result of engagement with the annular tapered surface(40), and the engaging mechanism (41) has a tapered ring portion (50), which makes a face contact with the annular tapered surface (40), and multiple ribs (51) extending outward, radially, from the tapered ring portion (50).

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: 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: A clamp device is disclosed which maintains a stable clamped state, even if an object to be fixed, being a work pallet or die, is clamped in a repeated fashion, and which is compact in size and yet capable of clamping the object to be fixed with a large clamping force.

Abstract: The present invention presents a work pallet positioning and fixing device capable of positioning in both horizontal and vertical directions through elastic deformation of an annular engaging portion, wherein the engaging portion can elastically deform along the entire periphery and even locally in a circumferential direction thereof.

Abstract: A pallet positioning and fixing device is provided which has a simple constitution and is capable of positioning a work piece holding pallet to a high degree of accuracy in the horizontal direction and vertical direction, with respect to a base body.

Abstract: A clamp device is disclosed which maintains a stable clamped state, even if an object to be fixed, being a work pallet or die, is clamped in a repeated fashion, and which is compact in size and yet capable of clamping the object to be fixed with a large clamping force.

Abstract: A chuck device includes a first worm gear mechanism linked to a second worm wheel mechanism which operate in tandem to receive, increase, and redirect an input rotational drive force. A conversion mechanism receives and further augments the force from the second worm gear mechanism and converts the drive force into an axial force. The conversion mechanism transfers the axial force symmetrically to a pair of claw members. The claw members move relative to each other and firmly secure a work item to the chuck device.

Abstract: The present invention presents a work pallet positioning and fixing device capable of positioning in both horizontal and vertical directions through elastic deformation of an annular engaging portion, wherein the engaging portion can elastically deform along the entire periphery and even locally in a circumferential direction thereof.

Abstract: A chuck device (1) includes: a worm gear mechanism (5) decelerating a rotational drive force applied through an input shaft member (4); a second gear mechanism (6) using the rotational drive force transferred from the worm gear mechanism (5) to drive a screw shaft member (46) in the axial direction; and a conversion mechanism (7) redirecting the axial drive force transferred by the screw shaft member (46) to drive a pair of claw members (3) symmetrically. Thus, the rotational drive force applied through the input shaft member (4) is increased by the worm gear mechanism (5) and the second gear mechanism (6), and this rotational drive force is redirected by the conversion mechanism (7) and transferred to the claw members (3), allowing a workpiece or tool to be firmly chucked.

Abstract: Disclosed are a biodegradable polyester resin composition, and a biodegradable article molded from the composition.The polyester resin composition and the molded article of the present invention are excellent in biodegradability without any loss of mechanical properties.

Abstract: A method of and an apparatus for making a dental set-up model utilizable in the practice of orthodontics and, more particularly, to facilitation of making the dental set-up model. The shape of an impression which is a replica of dental teeth and dental alveolar ridges of a patient is first converted on a non-contact basis into electronic data by means of a three-dimensional profile analyzer utilizing an irradiation beam. Using this electronic data and within the framework of such electronic data, representative plane defined by anatomically proximal contact points A1, anatomically distal contact points A2 and an intermediate point E between the bucco-cervical point B1 and the lingo-cervical point B2 are formed by cutting out the individual teeth.

Abstract: A syringe pump in which a movable member is attached to a frame so as to be movable forward and backward, a transmission roller, transmission gear and speed increasing gear are attached to the movable member, the drive force of a motor is transmitted to the transmission roller through a timing belt, and a clutch mechanism including a rotating member with teeth and a rotation preventing member with teeth engaged with the former teeth is provided whereby the drive force of the transmission gear is transmitted to the rotating member through a guide member comprising a timing belt. The movable member moves along the guide member in the state where the teeth of the rotating member and rotation preventing member are engaged with each other.

Abstract: A process for producing a thin film of unoriented cellulose ester held under uniform tension, the process including the steps of: casting a solution of cellulose ester in an organic solvent over a smooth glass plate and thereafter removing the solvent to form a thin film of a uniform thickness on the glass plate; permitting the thin film to separate from the glass plate by immersing the same into water; and recovering the thin film from the water and setting the wet film on a supporting mount, followed by drying the same.