Abstract: A pneumatic chamber 20 is configured to include a first pneumatic chamber 21 pressurizing a first piston 11 and a second pneumatic chamber 22 pressurizing a second piston 12. The first pneumatic chamber 21 communicates with the second pneumatic chamber 22. The hydraulic pressure generating unit 55 is internally provided with a hydraulic chamber 30, and the hydraulic chamber 30 is configured to have a first hydraulic chamber 31 pressurized by the first pneumatic chamber 21 via the first piston 11 and a second hydraulic chamber 32 pressurized by the second pneumatic chamber 22 via the second piston 12. The hydraulic pressure generating unit 55 is movable in a thrust direction in a cylinder 2, and the second hydraulic chamber 32 has a function of fixing the moving hydraulic pressure generating unit 55 in the cylinder 2 by causing a thin portion 15 to be elastically deformed in a radial direction due to hydraulic pressure.

Abstract: A pneumatic chamber 20 is configured to include a first pneumatic chamber 21 pressurizing a first piston 11 and a second pneumatic chamber 22 pressurizing a second piston 12. The first pneumatic chamber 21 and the second pneumatic chamber 22 communicate with each other through a communication hole 87 formed via the inside of a retaining bolt 17. The second pneumatic chamber 22 is formed in a hydraulic pressure generating unit 55 moving in a thrust direction in a cylinder 2 and is separable from the first pneumatic chamber 21. In addition, the communication hole 87 is also separated into a communication hole 87a and a communication hole 87b with the corresponding separation, a rod portion 50 of the first piston 11 is also separated into a rod portion 50a and a rod portion 50b, and the communication hole 87b and the rod portion 50b are formed to be movable along with the hydraulic pressure generating unit 55 in the thrust direction.

Abstract: A pneumatic chamber 20 is configured to include a first pneumatic chamber 21 pressurizing a first piston 11 and a second pneumatic chamber 22 pressurizing a second piston 12. The first pneumatic chamber 21 communicates with the second pneumatic chamber 22. The hydraulic pressure generating unit 55 is internally provided with a hydraulic chamber 30, and the hydraulic chamber 30 is configured to have a first hydraulic chamber 31 pressurized by the first pneumatic chamber 21 via the first piston 11 and a second hydraulic chamber 32 pressurized by the second pneumatic chamber 22 via the second piston 12. The hydraulic pressure generating unit 55 is movable in a thrust direction in a cylinder 2, and the second hydraulic chamber 32 has a function of fixing the moving hydraulic pressure generating unit 55 in the cylinder 2 by causing a thin portion 15 to be elastically deformed in a radial direction due to hydraulic pressure.

Abstract: A through-hole of a hydraulic chamber is provided on an input side of a thrust expansion device in accordance with rod diameters of various actuators on the input side, and an input rod of an air cylinder or the like is inserted therein. Thus, a thrust expansion mechanism operates. An input-side actuator attaching portion of the thrust expansion device is configured such that parts can be changed according to a fixing method of various actuators and a rod shape. It is possible to freely change a thrust expansion ratio by changing a cross sectional area of the input rod. A stroke of an output-side rod can be changed by changing an input stroke of the input-side actuator. According to the thrust expansion device, various inexpensive commercially available actuators can be easily attached and replaced by being separated and independent from the input-side actuator.

Abstract: An inner cylinder inside an outer cylinder is disposed to be coaxial to an air pressure supply rod inside the inner cylinder. A first piston is disposed between the air pressure supply rod and the inner cylinder, a pneumatic chamber is disposed on a side of one surface (hydraulic surface) of the first piston in the inner cylinder, and a first hydraulic chamber is disposed on a side of the other surface. A second piston is disposed between the outer cylinder and the inner cylinder, and a second hydraulic chamber is disposed on a side of a surface of the second piston which is provided in the same direction as the hydraulic surface of the first piston in both of the cylinders. The inner cylinder is provided with a communication hole for transmitting a negative pressure along with movement of oil with which the first hydraulic chamber and the second hydraulic chamber are filled. In this configuration, it is possible to shorten an overall length of a fluid pressure cylinder.

Abstract: In a thrust expansion device, an opposite surface to be opposite to an output surface, on which an output-side lid and a stop lid through which an output rod enters and exits, are disposed, and a plurality of orthogonal surfaces orthogonal to the output surface are capable of being sealed by a sealing lid. A hydraulic chamber transmitting a thrust to a piston portion so as to communicate with an orthogonal surface side and an opposite surface side. In addition, a thrust expansion device includes an output unit having an output surface on which a piston portion and an output rod are disposed, an expansion unit having no output surface, and connecting unit connecting the output unit and the expansion unit.

Abstract: A through-hole of a hydraulic chamber is provided on an input side of a thrust expansion device in accordance with rod diameters of various actuators on the input side, and an input rod of an air cylinder or the like is inserted therein. Thus, a thrust expansion mechanism operates. An input-side actuator attaching portion of the thrust expansion device is configured such that parts can be changed according to a fixing method of various actuators and a rod shape. It is possible to freely change a thrust expansion ratio by changing a cross sectional area of the input rod. A stroke of an output-side rod can be changed by changing an input stroke of the input-side actuator. According to the thrust expansion device, various inexpensive commercially available actuators can be easily attached and replaced by being separated and independent from the input-side actuator.

Abstract: By setting an outer circumferential surface of a second hydraulic chamber of a cylinder device to be a thin portion, hydraulic pressure increases by receiving air pressure from the second pneumatic chamber, and the thin portion expands to clamp a cylinder. Then, by the increase of the second hydraulic chamber, expansion of the thin portion in an axial direction is suppressed and the thin portion expands in a radial direction, and thus, as means for suppressing expansion in the axial direction, the thin portion is fixed from both end sides thereof with an expansion stop bolt. The expansion stop bolt fixes a lid and a lid disposed so as to sandwich pressed portions on both end sides of the thin portion or both ends of the thin portion. Further, in order to prevent the thin portion from being shrunk by tightening with the expansion stop bolt, a spacer is disposed between the pressed portions on both end sides of the thin portion.

Abstract: A pneumatic chamber 20 is configured to include a first pneumatic chamber 21 pressurizing a first piston 11 and a second pneumatic chamber 22 pressurizing a second piston 12. The first pneumatic chamber 21 communicates with the second pneumatic chamber 22. The hydraulic pressure generating unit 55 is internally provided with a hydraulic chamber 30, and the hydraulic chamber 30 is configured to have a first hydraulic chamber 31 pressurized by the first pneumatic chamber 21 via the first piston 11 and a second hydraulic chamber 32 pressurized by the second pneumatic chamber 22 via the second piston 12. The hydraulic pressure generating unit 55 is movable in a thrust direction in a cylinder 2, and the second hydraulic chamber 32 has a function of fixing the moving hydraulic pressure generating unit 55 in the cylinder 2 by causing a thin portion 15 to be elastically deformed in a radial direction due to hydraulic pressure.

Abstract: A pneumatic chamber 20 is configured to include a first pneumatic chamber 21 pressurizing a first piston 11 and a second pneumatic chamber 22 pressurizing a second piston 12. The first pneumatic chamber 21 and the second pneumatic chamber 22 communicate with each other through a communication hole 87 formed via the inside of a retaining bolt 17. The second pneumatic chamber 22 is formed in a hydraulic pressure generating unit 55 moving in a thrust direction in a cylinder 2 and is separable from the first pneumatic chamber 21. In addition, the communication hole 87 is also separated into a communication hole 87a and a communication hole 87b with the corresponding separation, a rod portion 50 of the first piston 11 is also separated into a rod portion 50a and a rod portion 50b, and the communication hole 87b and the rod portion 50b are formed to be movable along with the hydraulic pressure generating unit 55 in the thrust direction.

Abstract: A pneumatic chamber 20 is configured to include a first pneumatic chamber 21 pressurizing a first piston 11 and a second pneumatic chamber 22 pressurizing a second piston 12. The first pneumatic chamber 21 communicates with the second pneumatic chamber 22. The hydraulic pressure generating unit 55 is internally provided with a hydraulic chamber 30, and the hydraulic chamber 30 is configured to have a first hydraulic chamber 31 pressurized by the first pneumatic chamber 21 via the first piston 11 and a second hydraulic chamber 32 pressurized by the second pneumatic chamber 22 via the second piston 12. The hydraulic pressure generating unit 55 is movable in a thrust direction in a cylinder 2, and the second hydraulic chamber 32 has a function of fixing the moving hydraulic pressure generating unit 55 in the cylinder 2 by causing a thin portion 15 to be elastically deformed in a radial direction due to hydraulic pressure.

Abstract: An inner cylinder inside an outer cylinder is disposed to be coaxial to an air pressure supply rod inside the inner cylinder. A first piston is disposed between the air pressure supply rod and the inner cylinder, a pneumatic chamber is disposed on a side of one surface (hydraulic surface) of the first piston in the inner cylinder, and a first hydraulic chamber is disposed on a side of the other surface. A second piston is disposed between the outer cylinder and the inner cylinder, and a second hydraulic chamber is disposed on a side of a surface of the second piston which is provided in the same direction as the hydraulic surface of the first piston in both of the cylinders. The inner cylinder is provided with a communication hole for transmitting a negative pressure along with movement of oil with which the first hydraulic chamber and the second hydraulic chamber are filled. In this configuration, it is possible to shorten an overall length of a fluid pressure cylinder.

Abstract: A production line comprises production devices arranged in a line for machining a workpiece by conveyance of the workpiece successively to the production devices. Each of the production devices has a machine for machining the workpiece, an individual base for supporting the machine, a mounting unit that removably integrally mounts the machine on a surface of the individual base, and a positioning/moving unit that positions the machine on the surface of the individual base and that facilitates sliding movement of the machine along the surface of the individual base to permit the machine to be slidingly drawn of f of the surface of the individual base when the machine is not mounted on the surface of the individual base by the mounting unit. The line unit also comprises a maintenance stand onto which the machine slidingly drawn off of the surface of the individual base is placed for transportation away from the production line and/or for undergoing a maintenance operation.

Abstract: In order to achieve miniaturization and high accuracy in movement, an actuator comprises a stationary shaft extending in a predetermined direction, a needle movable along the stationary shaft, one of the stationary shaft and the needle having a permanent magnet, and the other of the stationary shaft and the needle comprising a linear motor having a coil, a guide rail extending in parallel to the stationary shaft and interposing the needle inside to guide the same, and a pair of support means interposed between the guide rail and the needle to movably support the needle, points of action of the pair of support means and an axis of the stationary shaft being consistent with each other.

Abstract: Provided is a production line which allows easy interchange of and maintenance on production devices and which is compact with a short line length. Split bases 3 for respective production devices 2 arranged in a production line are formed in a uniform unit module width W, and the production devices 2 are connected to each other. A machine 4 on each split base 3 is drawn out forwards under the guide of a movement guide 8 for maintenance operation, or is interchanged with another machine 4. During the maintenance operation on or interchange of the machines 4, the machine 4 drawn out, and a control device 5 and fluid supply devices 6 and 7 are placed onto a caster-equipped cart to undergo maintenance operation on the caster-equipped cart or to be carried to another location.

Abstract: In order to achieve miniaturization and high accuracy in movement, an actuator comprises a stationary shaft extending in a predetermined direction, a needle movable along the stationary shaft, one of the stationary shaft and the needle having a permanent magnet, and the other of the stationary shaft and the needle comprising a linear motor having a coil, a guide rail extending in parallel to the stationary shaft and interposing the needle inside to guide the same, and a pair of support means interposed between the guide rail and the needle to movably support the needle, points of action of the pair of support means and an axis of the stationary shaft being consistent with each other.

Abstract: Disclosed is a cushion cylinder device allowing high accuracy setting of a cushion operation start position. At the cushion operation start position of a driving cylinder, a first engagement member provided on a piston rod of the driving cylinder abuts a second engagement member provided on a piston rod of a cushioning cylinder, whereby the driving cylinder undergoes deceleration through cushion operation of the cushioning cylinder.

Abstract: A swiveling table apparatus comprises a base and a table main body disposed on the base and mounted for swiveling movement about a swivel axis. A driving mechanism includes a servo motor for generating a driving power to swivel the table main body about the swivel axis. A power transmission mechanism transmits the driving power of the servo motor to the table main body.

Abstract: A table feeder apparatus comprises a base, a feed screw rotatably supported on the base and a motor for rotating the feed screw about a feed axis. A feed nut is mounted on the feed screw and a block is mounted integrally with the feed nut. A table is disposed on the block for movement along the feed axis. In one aspect, a slide mechanism is disposed between the block and the table. The slide mechanism is slidable in at least one of a horizontal direction and a vertical direction transverse to the feed axis. During movement of the table, the slide mechanism slides to absorb a force applied to the feed nut, tending to displace the block and table in a direction transverse to the feed axis, to prevent the applied force from being transmitted to the table. In another aspect, the table is provided with an opening in which a table portion is removably fitted. Removal of the table portion facilitates maintenance of the slide mechanism without requiring the entire table feeder structure to be dismantled.

Abstract: A chuck spindle apparatus comprises a chuck spindle mounted for rotation about a central rotational axis, a chuck main body integrally connected to a forward end of the chuck spindle for rotation therewith, and an indexing device. The chuck main body has a chuck portion for bringing any one of a series of fabrication centers of a workpiece into coincidence with the central rotational axis to thereby chuck the workpiece. The indexing device is disposed within the chuck main body for moving the chuck portion of the chuck main body to bring another one of the fabrication centers of the workpiece into coincidence with the central rotational axis while the workpiece is chucked by the chuck portion of the chuck main body.