Abstract: A chuck-claw guide structure includes a guide-space delimiting part that delimits a guide space in communication with an attachment groove, and a regulation part provided on the guide-space delimiting part. The guide-space delimiting part has a contact surface configured to regulate the claw in contact therewith at a position along the attachment groove in a first direction. The regulation part is configured to regulate the claw at a position along the attachment groove in a second direction different from the first direction.

Abstract: A chuck grip accuracy checking method includes a gripping in which the measurement target is gripped on the claws, a moving step, and a measuring step. In the moving step, a movable member provided with a measurement instrument capable of measuring a run-out of the measurement target is moved by driving a movable-member driver to a position at which the measurement instrument can measure a run-out of the measurement target. In the measuring step, a run-out of the measurement target is measured by the measurement instrument, while the chuck is being rotated by driving a rotation driver.

Abstract: A chuck-claw coupling mechanism includes a coupling member provided in a master jaw, a first resilient member, and an operation unit. The coupling member is movable between a coupling position at which the coupling member is coupled to the claw, and a separation position at which the coupling member is separated from the claw. The first resilient member urges the coupling member toward the coupling position. The operation unit moves the coupling member to the separation position.

Abstract: A dust-proof mechanism for chuck includes a fluid supply source, an inner space inside a chuck, and a discharge space in the chuck. A supply fluid is supplied to the inner space from the fluid supply source, and passes through the inner space as a pressurized fluid. Through the discharge space, the pressurized fluid is discharged to the outside of the chuck from the inner space.

Abstract: A chuck-claw guide structure includes a guide-space delimiting part that delimits a guide space in communication with an attachment groove, and a regulation part provided on the guide-space delimiting part. The guide-space delimiting part has a contact surface configured to regulate the claw in contact therewith at a position along the attachment groove in a first direction. The regulation part is configured to regulate the claw at a position along the attachment groove in a second direction different from the first direction.

Abstract: A chuck-claw coupling mechanism includes a coupling member provided in a master jaw, a first resilient member, and an operation unit. The coupling member is movable between a coupling position at which the coupling member is coupled to the claw, and a separation position at which the coupling member is separated from the claw. The first resilient member urges the coupling member toward the coupling position. The operation unit moves the coupling member to the separation position.

Abstract: A chuck grip accuracy checking method includes a gripping in which the measurement target is gripped on the claws, a moving step, and a measuring step. In the moving step, a movable member provided with a measurement instrument capable of measuring a run-out of the measurement target is moved by driving a movable-member driver to a position at which the measurement instrument can measure a run-out of the measurement target. In the measuring step, a run-out of the measurement target is measured by the measurement instrument, while the chuck is being rotated by driving a rotation driver.

Abstract: A sealing part disposed between a claw opening-and-closing member and a support member. The sealing part includes a first contact part that is in contact with the claw opening-and-closing member, and a second contact part that is in contact with the claw opening-and-closing member at a position different from that of the first contact part.

Abstract: A hand for exchanging claws of a chuck is configured to be fitted to a transfer device so as to attach and detach a claw to and from a fitting groove provided in the chuck of a machine tool. The hand for exchanging claws includes: a hand part capable of grasping the claw; and a compliance device that fits the hand part to the transfer device, and allows relative displacement between the transfer device and the hand part.

Abstract: In this rod-less cylinder equipped with a guide mechanism (32), the guide mechanism (32) has: a first rail member (34), which is attached to the sidewall of a cylinder tube (2), has an inner rolling groove (34a), and is composed of alloyed steel; a second rail member (36), which is attached to a protrusion (31) of a slider (27), has an outer rolling groove (36a), and is composed of alloyed steel; a guide path (38a) provided in the protrusion of the slider and extending parallel to the second rail member; a connection member (39) having a connection path (39a) that connects the guide path and the inner rolling groove; and a plurality of rolling bodies (43) accommodated within an endless circulation path (42) formed of the inner rolling groove, the outer rolling groove, the guide path, and the connection path.

Abstract: A magnet-type rodless cylinder (1) is provided with a guide mechanism having an outer rolling groove (26), an inner rolling groove (29), a cylinder body (32), a pair of connection paths (34) for connecting an area between the outer rolling groove and the inner rolling groove with the cylinder body, and a plurality of steel balls (36) that can roll within an endless circuit (35) formed of the cylinder body, the connection paths and the area between the outer rolling groove and the inner rolling groove, wherein the connection paths (34) are formed at a pair of inner members, i.e. return caps (33), disposed on the inner sides of metal end plates (12) that are attached to the front and rear ends in the sliding direction of a sliding body (4).

Abstract: In this rod-less cylinder equipped with a guide mechanism (32), the guide mechanism (32) has: a first rail member (34), which is attached to the sidewall of a cylinder tube (2), has an inner rolling groove (34a), and is composed of alloyed steel; a second rail member (36), which is attached to a protrusion (31) of a slider (27), has an outer rolling groove (36a), and is composed of alloyed steel; a guide path (38a) provided in the protrusion of the slider and extending parallel to the second rail member; a connection member (39) having a connection path (39a) that connects the guide path and the inner rolling groove; and a plurality of rolling bodies (43) accommodated within an endless circulation path (42) formed of the inner rolling groove, the outer rolling groove, the guide path, and the connection path.

Abstract: A magazine attachment/detachment mechanism (10) is equipped with; protrusions (11a, 11b) extending downward from a receiver (2); and an attachment/detachment unit (12) that is movably attached to the protrusions (11a, 11b) and that attaches a magazine (3) to the receiver (2) in a detachable manner. The attachment/detachment unit (12) attaches/detaches the magazine (3) to/from the receiver (2) by moving between a securing position that secures the magazine (3) and a release position that releases the magazine (3). Thus, the magazine (3) is attached directly to the receiver (2), so deviation from the design value for the attachment height of the magazine (3) with respect to the receiver (2) can be reduced. Accordingly, it is possible to prevent defects in the chambering of cartridges without reducing the strength of the receiver (2).

Abstract: In a rodless cylinder 1, a band accommodating depression 60 having a transverse inner surface 62 extending along the width of a slit 12 of an inner hole 10 of a tube 2 and a wall surface 64 inclined with respect to the transverse inner surface 62 is formed on each side of the inner opening of the slit 12. In the case where one of the edges of the inner seal band 42 comes into contact with one of the wall surfaces 64, the other edge of the inner seal band 42 comes into contact with the other one of the transverse inner surfaces 62, while at the same time securing a distance I between the inner seal band 42 and an inner opening 58 of the slit 12. Once a fluid is introduced into the tube 2, the inner seal band 42 can be bent toward the slit 12 due to the distance I even in the case where one of the edges of the inner seal band 42 comes into contact with the transverse inner surface 62 and the other edge comes into contact with the wall surface 64.

Abstract: A pair of cylinder holes 10 are formed in a cylinder tube 2 in the axial direction, a slit 25 is formed between these cylinder holes, and an iron plate 22 is inserted in the slit covering the whole range of the movement of the pistons 3 in the cylinder holes. Spacers 23 made of a synthetic resin are interposed on both sides of the iron plate 22 to reliably hold the iron plate 22 in the slit 25. The iron plate 22 disposed between the cylinder holes works to decrease the repulsive force acting between the inner magnets 14 of the pistons and produce an attracting force between the iron plate 22 and the inner magnets 14, and a contact surface pressure between the wear rings 9 of the pistons 3 and the wall surfaces of the cylinder holes 10 can be adjusted to a suitable value.

Abstract: A tabular form element arrangement data describing the arrangement of various component elements constituting a production system along the work flow in a combination of process identification names with component element names, is prepared. Element definition files describing programs for simulating the operations of various component elements are prepared. A program preparation unit sequentially reads component element names combined with process identification names from the element arrangement data and sequentially reads the element definition files corresponding to the read component element names. A variable array containing variables described in respective element definition files is prepared simultaneously along with an initial process program array containing programs described in respective definition files and a simulation program array.

Abstract: A pair of independent cylinder holes 3, 3 are formed in a cylinder tube 2 of a flat outer shape. When a pressurized fluid is alternately supplied into the cylinder tube 2 through a port 7 formed in an end cap 5, the internal pressure for operating the cylinders acts uniformly on the cylinder tube 2 greatly decreasing stress and deflection of the cylinder tube 2.

Abstract: Repulsive magnetic forces in the axial direction of cylinder tubes act between the rows 11 of inner magnets of pistons 10, 10 accommodated in two cylinder tubes 2, 2, and the inner magnets 12 of the pistons 10 come to a halt being slightly deviated relative to the outer magnets 22 in the axial direction of the tube. Due to this deviation, a magnetic holding force Fc is produced between the inner and outer magnets 12, 22. Since the magnetic holding force Fc is produced in a static state, a smooth movement can be attained from a static state suppressing the occurrence of a stick slip phenomenon at the start of movement as compared to the prior art, which does not produce the magnetic holding force in a static state.

Abstract: A magnet type rodless cylinder provided with a slide magnetically coupled with a piston arranged in a cylinder tube and a slide able to move outside of the cylinder tube. The slide has a connection mount detachably attached to it. When attaching the connection mount, the position where the connection mount and an end cap strike/contact becomes the striking/contacting position of the piston. When using a rodless cylinder without a connection mount, the distance between the slide and an end cap when the piston is positioned at the striking/contacting position becomes longer than the striking/contacting distance due to the removal of the connection mount. Therefore, external dampers able to strike/contact the slide are detachably attached to the end caps at the slide sides. Due to this, regardless of the use or nonuse of a connection mount, the piston and slide can always stop at the striking/contacting position.

Abstract: A sheet cutter for cutting a sheet with a cutting blade held by a cutting blade elevating body which is elevated by one servo motor, including a pair of cutting blade elevating bodies; an elevation driving body for elevating the pair of cutting blade elevating bodies; a guide member for guiding the elevation of the pair of cutting blade elevating bodies; a holding body capable of holding the pair of cutting blade elevating bodies at an up position; and a transmission change-over device for selectively engaging the pair of cutting blade elevating bodies with the elevation driving body and selectively disengaging the pair of cutting blade elevating bodies from the elevation driving body, wherein one of the pair of cutting blade elevating bodies, which has been selected, is elevated by the servo motor.