Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
  • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
  • B23Q17/006—Arrangements for observing, indicating or measuring on machine tools for indicating the presence of a work or tool in its holder
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
  • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
  • B23Q1/0063—Connecting non-slidable parts of machine tools to each other
  • B23Q1/0081—Connecting non-slidable parts of machine tools to each other using an expanding clamping member insertable in a receiving hole
  • B23Q1/009—Connecting non-slidable parts of machine tools to each other using an expanding clamping member insertable in a receiving hole the receiving hole being cylindrical or conical

Definitions

• the “clamp device” is a device that allows the movable member 3 to be attached to and detached from the reference member 2.
• the movable member 3 A device that can restrain at least uniaxial movement.
• the pressure fluid is ejected from the fluid flow hole 38.
• a high-pressure fluid is supplied to the fluid flow hole 38, and a slight gap between the close contact surface 16 and the inner peripheral surface of the hole 5 can be reliably detected to determine that a clamp abnormality has occurred. It is advantageous.
• the tension member 21 is connected movably in the direction of the center, the tension member 21 is connected to the pressing tool 43, and a lock means and a release means are provided on the reference member 2 side.
• the pressing member 43 is locked in the proximal direction through the release member, and the release means moves the pressing member 43 through the tension member 21.
• the press tool 43 is configured to be released in the end direction, and the straight outer surface 16 of the pressing tool 43 is provided with a fluid communication hole 38.
• the fluid flow hole 38 can be configured to be closed by the inner peripheral surface of the hole 5 when it comes into close contact with the inner peripheral surface.
• the housing 9 attached to the reference member 2 side is provided with a fluid port 39 for supplying or discharging the pressure fluid, and a fluid passage is provided inside the housing 9. 40, the fluid passage 40 is connected to the fluid port 39, and the fluid passage 40 has a relay opening 41 formed in the inclined outer surface 13 of the shaft 12, and the fluid flow hole 38 is Preferably, one end is provided to open to the straight outer surface 16 and the other end is opened to the inclined inner surface 17, and the other end faces the relay opening 41.
• This configuration makes it possible to easily detect whether or not a clamping error has occurred by checking the pressure on the fluid port 39 side.
• the housing 9 attached to the reference member 2 is provided with a tension member 21, and the tension member 21 is attached to the movable member. It is preferable that 3 can be pulled toward the reference member 2 side. Thereby, a simple configuration capable of restraining the movable member 3 in the direction along the axis of the center column 12 can be realized.
• FIG. 5 (a) is an elevational sectional view showing a released state of a clamp device according to a third embodiment of the present invention.
• FIG. 5 (b) is a sectional view taken along the line bb of FIG. 5 (a).
• a base plate 2 as a reference member is placed on a table 1 of an operation machine, and fixed to the base plate 2.
• the supporting surface 9a of the reference block 9 as a housing to be received receives the supported surface 3a of the work pallet 3 as a movable member. Further, when the supported surface 3a is received by the support surface 9a, the work pallet 3 is positioned horizontally in a state where the work pallet 3 is aligned with the base plate 2. .
• the supported surface 3a is formed on the lower surface of the work pallet 3, and a plurality of precisely processed circular positioning holes 5 are formed in the supported surface 3a. Then, a plug means 6 is provided on the base plate 2 corresponding to each of the positioning holes 5. Here, only one set of the positioning holes 5 and the plug means 6 provided in a plurality of sets is illustrated.
• the plug portion 27 of the present invention includes the center column 12, the cap 37, the intermediate member 15, the ring 26, and the like.
• the plug portion 27 has a shape protruding from the base plate 2 so that it can be inserted into the positioning hole 5.
• the straight outer surface 16 as the outer peripheral surface of the intermediate member 15 constitutes a close contact surface that can adhere to the outer peripheral surface of the plug portion 27, that is, the inner peripheral surface of the positioning hole 5.
• An air port 39 as a fluid port is provided on the lower surface of the reference block 9, and a relay opening 41 is formed on the inclined outer surface 13 of the center column 12.
• the air port 39 and the relay opening 41 communicate with each other via an air passage 40 formed inside the reference block 9.
• the ejection holes 38 formed in the intermediate member 15 are formed so as to penetrate the intermediate member 15 in the radial direction, that is, open one end to the straight outer surface 16 and the other end to the inclined inner surface 17. The other end faces the relay opening 41.
• the intermediate member 15 is switched to the expanded state, and the straight outer surface 16 of the outer peripheral surface is brought into close contact with the inner peripheral surface of the positioning hole 5. I do.
• the work pallet 3 is fixed in the horizontal direction (the centering described above).
• the lower surface of the ring 26 abuts on the upper end surface of the center column 12, so that the intermediate member 15 is prevented from lowering by a predetermined amount or more.
• the clamping operation when the clamping operation is appropriately performed, that is, when the straight outer surface 16 is in close contact with the positioning hole 5 and the ejection hole 38 is closed by the inner peripheral surface of the positioning hole 5. Since the air leak from the jet hole 38 can be eliminated or the air leak can be made extremely small, the pressure of the air port 39 increases. By detecting this pressure increase with a pressure sensor not shown, it can be determined that the clamping operation has been properly performed.
• the straight outer surface 1 When there is a gap between the positioning hole 6 and the positioning hole 5, a large amount of compressed air leaks from the ejection hole 38 through the gap, so that the pressure of the air port 39 does not increase. Therefore, the pressure of the air port 39 is measured, and if the pressure falls below a predetermined pressure, it can be determined that some sort of clamping abnormality has occurred.
• the plug means 6 clamps the plug portion 27 by inserting the plug portion 27 into the positioning hole 5 and bringing the outer peripheral surface of the plug portion 27 into close contact with the inner peripheral surface of the positioning hole 5 as described above. It is. Therefore, the plug portion 27 is hidden inside the positioning hole 5 during the clamping operation, and it is impossible or extremely difficult to visually confirm whether or not the clamping is properly performed by an external force.
• the present embodiment it is possible to realize a configuration capable of reliably detecting whether the clamp operation is normal or abnormal based on the pressure of the air port 39.
• compressed air is supplied to the air port 39 so that air is ejected from the ejection hole 38.
• the air port 39 is evacuated and the ejection port is The air may be sucked from 38. That is, the port 39 (fluid port) is configured as a fluid suction port, and the hole 38 (fluid flow hole) is configured as a fluid suction port.
• This configuration is useful, for example, when a clamp device is installed in a clean room where the user does not want to fly up dust.
• the configuration of the first embodiment in which compressed air is supplied to the air port 39 has a configuration in which high-pressure (for example, 10 atm or more) compressed air is supplied to the air port 39 so that even a small gap can be reliably detected. At zero point This is advantageous as compared to the aforementioned evacuation that cannot be lowered.
• the intermediate member 15 has a plurality of radial through grooves that are alternately opened on the upper and lower surfaces of the peripheral wall, instead of having one of the slits 18 provided on the peripheral wall.
• a plurality may be provided in the direction.
• the intermediate member 15 can be constituted by a plurality of divided bodies arranged in the circumferential direction.
• the intermediate member 15 may have a configuration in which at least a part in the circumferential direction does not need to be configured so that the entire circumferential direction can be deformed in the radially increasing direction and the radially decreasing direction.
• center column 12 and the intermediate member 15 may be indirectly engaged via another member instead of being directly engaged.
• the plug means 6 is provided with a cleaning means to provide a contact portion between the support surface 9a and the supported surface 3a, an inner peripheral surface of the positioning hole 5, and an intermediate member 15. It is preferable that the straight outer surface 16 and the engaging surface between the center column 12 and the intermediate member 15 are cleaned with a pressurized fluid such as compressed air, nitrogen, or cutting oil.
• a pressurized fluid such as compressed air, nitrogen, or cutting oil.
• the compressed air ejected from the ejection hole 38 is discharged.
• the inner peripheral surface of the positioning hole 5 and the outer straight surface of the intermediate member 15 may be cleaned, and the above-mentioned chips may be blown off to be removed.
• the configuration of the plug means 6 can be simplified by using the compressed air (pressure fluid) for clamping abnormality detection supplied to the airport 39 as a cleaning fluid.
• a cleaning fluid ejection hole may be formed on the outer surface of the plug portion 27, and the cleaning fluid may be ejected therefrom.
• the cleaning fluid ejection hole may be formed by branching off from the air passage 40.
• a port dedicated to the cleaning fluid is formed in the reference block 9 and a port separate from the air passage 40 is provided. The port for discharging the cleaning fluid and the port may be connected through the path of
• the pressure fluid supplied to the air port 39 is (compressed) air in the above embodiment, but other fluids may be employed.
• a configuration in which cutting oil or the like is supplied to the ejection holes 38 may be employed.
• FIG. 3 (a) is an elevational sectional view showing a released state of the clamp device according to the second embodiment of the present invention
• FIG. 3 (b) is a sectional view taken along the line bb of FIG. 3 (a).
• Fig. 4 is a cross-sectional plan view showing a state in which the axis of the plug part is displaced from the axis of the positioning hole in the above-described clamp device, and one of the ejection holes is closed, similar to Fig. 3 (b).
• FIG. in the second embodiment the same or similar members as in the first embodiment are given the same reference numerals in principle. Note that this is the same in a third embodiment and later to be described later.
• the difference of the second embodiment from the first embodiment is that a plurality of ejection holes 38 are formed in the outer peripheral surface of the plug portion 27 in the circumferential direction. This will be specifically described below.
• a communication groove (communication passage) 42 having an arc shape in a plan view is formed in the outer peripheral surface (the inclined outer surface 13) of the center column 12. are doing.
• One end of the air passage 40 forms the relay opening 41 at an intermediate portion of the communication groove 42.
• the three ejection holes 38 are provided on the intermediate member 15 at equal intervals in the circumferential direction.
• Each of the three ejection holes 38 is formed so that one end opens to the straight outer surface 16 and the other end opens to the inclined inner surface 17.
• the other end side of each ejection hole 38 faces the communication groove 42.
• FIG. 4 shows the state as shown in FIG. 4 can also be appropriately detected as a clamp abnormality.
• Figure 4 shows the case where the locking operation to be performed was not performed for some reason such as a failure of the hydraulic equipment.
• FIG. 4 despite the fact that the straight outer surface 16 is not tightly attached to the inner peripheral surface of the positioning hole 5, accidentally, or the inner peripheral surface of the straight outer surface 16 and the positioning hole 5.
• Foreign matter between the plug portion 27 and the positioning hole 5 causes an axial center misalignment, and one of the plurality of ejection holes 38 (the left side in FIG. 4). May be closed by contacting the inner peripheral surface of the positioning hole 5.
• the air passage 40 extending from the air port 39 is branched in the circumferential direction via the communication groove 42 and communicates with each of the ejection holes 38. It is not necessary to detect the pressure of each of the ejection holes 38.
• the clamp abnormality can be detected only by detecting the pressure on the air port 39 side. Therefore, the configuration of the fluid path and the configuration for pressure detection can be simplified.
• the number of the ejection holes 38 is three, but may be two or four or more.
• the connecting groove 42 may be formed in the inclined inner surface 17 of the intermediate member 15 instead of being provided in the inclined outer surface 13 of the center column 12.
• FIG. 5 (a) is an elevational sectional view showing a released state of the clamp device according to the third embodiment of the present invention
• FIG. 5 (b) is a sectional view taken along the line bb in FIG. 5 (a).
• three inclined grooves 75 are formed on the outer surface of the center column 12 at intervals in the circumferential direction.
• the bottom surface of the inclined groove 75 is formed as an inclined wedge surface, and constitutes the inclined outer surface 13.
• a support wall 37a extends in a cylindrical shape from the lower end of the cap 37 toward the base end of the shaft 12, and the support wall 37a has a shape continuous in the circumferential direction without slits (cuts). ing.
• three pressing members 43 are supported at intervals in the circumferential direction so as to be movable in the radial direction.
• the pressing tool 43 is connected to the tension member 21 (specifically, the cap 37).
• each pressing tool 43 is formed with an inclined wedge surface as the inclined inner surface 17, and the inclined inner surface 17 is wedge-engaged with the inclined outer surface 13 from above.
• the outer surface of each pressing tool 43 is the straight outer surface 16 which can be in close contact with the inner peripheral surface of the positioning hole 5, and the above-described ejection hole 38 is formed substantially at the center of the straight outer surface 16.
• the cap 37 is prevented from rotating by a pin 19 protruding upward from the shaft 12.
• each of the pressing tools 43 supported on the support wall 37a is moved by the tension member 21 to the base of the center column 12 during the locking operation.
• the outer surface of each pressing tool 43 is strongly adhered to the positioning hole 5 while being locked in the end direction and projecting outward in the radial direction. That is, the straight outer surface 16 as the outer surface of each pressing tool 43 constitutes the outer peripheral surface of the plug portion 27 and also corresponds to the close contact surface which is in close contact with the inner peripheral surface of the positioning hole 5. .
• each of the pressing members 43 is released by the tension member 21 in the distal direction of the center pole 12 and is moved inward in the radial direction.
• the air passage 40 is connected to the air port 39 formed in the reference block 9, and one end of the air passage 40 is connected to the relay opening 41 in the inclined outer surface 13.
• the ejection hole 38 is provided so as to open one end to the straight outer surface 16 and the other end to the inclined inner surface 17, respectively, and the other end faces the relay opening 41. I have.
• the ejection holes 38 are provided in all three of the pressing members 43. Instead of this, for example, only one or two of the three pressing members 43 have the ejection holes. A hole 38 may be provided. In the third embodiment, three pressing tools 43 are provided. However, the number of pressing tools 43 is not limited to this, and may be two or four or more.
• the compressed air is supplied to the air port 39 and the ejection hole 38 is configured to eject the air.
• the air port 39 is evacuated and the ejection port 38 is ejected from the ejection port 38. You may comprise so that air may be sucked.
• the return means may be configured.
• FIG. 6 (a) is an elevational sectional view showing a locked state of a clamp device according to a fourth embodiment of the present invention
• FIG. 6 (b) is a sectional view taken along the line bb in FIG. 6 (a).
• the center column 12 is integrally formed so as to protrude upward from the reference block 9, but the outer peripheral surface is the inclined outer surface. Instead of a straight surface.
• the upper surface of the reference block 9 is formed to protrude a small amount annularly around the base end of the center column 12, and the flat support surface 9a is formed on the upper surface of the protrusion.
• the support surface 9a faces the supported surface 3a of the work pallet 3.
• An inner sleeve 61 is fitted around the outer periphery of the center column 12 so as to be movable within a predetermined range in the axial direction (vertical direction) of the center column 12.
• a single slit 62 extending upward and downward is formed in the peripheral wall of the inner sleeve 61, whereby the inner sleeve 61 is configured to be able to expand and contract in the diameter direction, and has its own elastic restoring force.
• the diameter is slightly enlarged.
• two detent pins 63 and 64 are projected from the center column 12 in the radial direction, and one detent pin 63 is inserted into the slit 62.
• the other detent pin 64 is inserted into a floating hole 65 formed in the inner sleeve 61. It is desirable to mount a sealing member (not shown) made of rubber or the like on the slit 62.
• the outer periphery of the inner sleeve 61 is provided with an inclined outer surface 13 having a shape that approaches the axial center side with an upward force (toward the distal end of the center pillar 12) in a tapered shape.
• An annular outer sleeve 71 is disposed outside the inner sleeve 61.
• the outer sleeve 71 is formed in a collet shape and a substantially cylindrical shape, and one slit 72 is formed in a peripheral wall thereof.
• the outer sleeve 71 is configured to be elastically deformable outward in the radial direction.
• the outer sleeve 71 is configured to be able to return inward in the radial direction by its elastic restoring force.
• the detent pin 64 is inserted into the slit 72, and thereby the detent of the outer sleeve 71 is prevented. It is desirable to attach a sealing member (not shown) made of rubber or the like to the slit 72.
• the above-mentioned straight outer surface 16 which can be in close contact with the inner peripheral surface of the positioning hole 5 is formed.
• an inclined inner surface 17 facing the inclined outer surface 13 of the inner sleeve 61 is provided.
• the inclined inner surface 17 is also configured to approach the axis with an upward force (toward the distal end of the center column 12).
• the tension member 21 is vertically movably inserted into the reference block 9.
• the tension member 21 is integrally formed with a piston 22 inserted into the lower part of the reference block 9 in a hermetically sealed manner so as to project upward from the piston 22.
• a piston rod 23 inserted in the axial hole of the piston rod 23 in the axial direction, a cap 37 fixed to the upper part of the piston rod 23 by bolts 24, and a gap between the lower surface of the cap 37 and the upper end surface of the piston rod 23. And a ring 26 sandwiched between them.
• a flange is formed on an outer peripheral surface of the ring 26, and an upper flange formed on an upper portion of the outer sleeve 71 is fitted into an annular groove formed by the flange and the cap 37. ing. As a result, the outer sleeve 71 and the tension member 21 are connected.
• the plug portion 27 of the present invention is composed of the center column 12, the cap 37, the inner sleeve 61, the outer sleeve 71, and the like.
• the plug portion 27 has a shape protruding from the base plate 2 so that it can be inserted into the positioning hole 5.
• a lock unit and a release unit are provided in the reference block 9.
• the locking means is constituted by the piston 22 and a lock hydraulic chamber 53 formed above the piston 22.
• the release means includes the piston 22 and the lower side of the piston 22. And a release hydraulic chamber 35 formed at the center.
• One end of a pin 67 is inserted into the piston 22 in the up-down direction, and the other end is locked to the reference block 9. The pin 67 prevents the rotation of the tension member 21.
• the reference block 9 is provided with an air port 39, and the air port 39 is connected to an air passage 40 formed inside the reference block 9.
• One end of the air passage 40 forms a relay opening 41 on the outer peripheral surface of the shaft 12.
• the relay opening 41 communicates with the ejection hole 38 formed in the outer sleeve 71 via a communication hole 79 formed through the inner sleeve 61.
• the support surface 9a of the reference block 9 is provided with seating confirmation means. That is, a detection nozzle hole 59 is opened in the support surface 9a, and compressed air for detection is supplied to the detection nozzle hole 59. When the supported surface 3a comes into contact with the support surface 9a, the pressure in the detection nozzle hole 59 increases. By detecting this pressure increase by a pressure sensor (not shown), it is possible to confirm that the work pallet 3 is seated on the reference block 9.
• the reference block 9 is provided with a cleaning means. That is, a cleaning port 44 is provided in the reference block 9, and a cleaning passage 45 is connected to the cleaning port 44.
• a cleaning port 44 is provided in the reference block 9, and a cleaning passage 45 is connected to the cleaning port 44.
• the compressed air passes through the cleaning passage 45 and passes through the dish panel 25, the inner sleeve 61 and the outer sleeve 71, and the inner periphery of the positioning hole 5. It is sprayed on the surface, etc., and foreign matter such as chips can be blown off and removed.
• the work pallet 3 is lowered to remove the positioning hole 5 from the outside. Fit externally to sleeve 71. At the time of this external fitting operation, it is preferable to supply compressed air to the cleaning port 44 to blow off chips and the like adhering to each part such as the plug part 27 to remove them.
• the lower surface of the work pallet 3 is received by the disc spring 25, and as a result, a small gap is formed between the supported surface 3a and the support surface 9a. Therefore, even if compressed air is supplied to the detection nozzle hole 59 in this state, the pressure does not increase because air leaks from the gap.
• the pressurized oil is discharged from the release hydraulic chamber 35 and the pressurized oil is supplied to the lock hydraulic chamber 53.
• the piston 22 lowers the outer sleeve 71 via the piston rod 23 and the cap 37, and moves the inclined inner surface 17 of the outer sleeve 71 to the inclined outer surface 13 of the inner sleeve 61.
• the wedges are engaged.
• the outer sleeve 71 and the inner sleeve 61 and the like operate as follows.
• the outer sleeve 71 is expanded in diameter through the inner sleeve 61 held at a substantially raised position by the urging force of the counter panel 25, and the outer sleeve 71 is positioned in the position. It contacts the hole 5. Then, the outer sleeve 71 expands its diameter while compressing the disc spring 25 downward through the inner sleeve 61 and closely contacts the inner peripheral surface of the positioning hole 5, so that the work pallet 3 is horizontally moved. Direction. In this horizontal positioning stage, there is a contact gap between the support surface 9a and the supported surface 3a.
• the outer sleeve 71 lowers the inner sleeve 61 by a distance corresponding to the advance stroke against the urging force of the conical panel 25, the inner sleeve 61 It is received by the reference block 9 via 25. Then, the outer sleeve 71 is strongly wedge-engaged with the inner sleeve 61 to expand the diameter. The outer sleeve 71 strongly adheres to the inner peripheral surface of the positioning hole 5. As a result, the work pallet 3 is restrained in the horizontal and vertical directions, and is strongly locked.
• the detection nozzle hole 59 is closed by the supported surface 3a, and the ejection hole 38 is closed by the inner peripheral surface of the positioning hole 5. Therefore, if the pressures in the air port 39 and the detection nozzle hole 59 are increased, it can be determined that the clamp operation has been properly performed.
• the pressurized oil in the lock hydraulic chamber 53 may be discharged and the pressurized oil may be supplied to the release hydraulic chamber 35.
• the tension member 21 including the piston 22, the piston rod 23, the cap 37, etc. raises the outer sleeve 71, and the rising outer sleeve 71 is reduced in diameter by its own elastic restoring force.
• the locked state is released.
• a fixing hole 80 is formed on the lower surface of the work pallet 3, and a positioning ring 85 is shown in the fixing hole 80. Not fixed by bolts.
• the positioning ring 85 has the positioning hole 5, and the lower surface of the positioning ring 85 is annularly projected around the positioning hole 5, and the supported surface 3 a is formed on the lower surface of the annular projection.
• a reduced diameter portion 89 is formed at an upper portion of the inner peripheral surface of the positioning hole 5, and the upper portion of the reduced diameter portion 89 is tapered downward (toward the opening end of the positioning hole 5).
• the pressure receiving surface 90 has a tapered shape.
• a reference block 9 is fixed to the base plate 2 by bolts (not shown).
• annular core 12 is projected upward so as to be able to be inserted into the positioning hole 5.
• the outer peripheral surface of the shaft 12 is a straight surface.
• the upper surface of the reference block 9 is annularly protruded around the base end of the center column 12, and a support surface 9a facing the supported surface 3a is formed on the upper surface of the annular protrusion. ing.
• An intermediate member 15 is disposed on the center column 12 so as to be vertically displaceable.
• the slit 18 is formed on the peripheral wall of the intermediate member 15 so that the intermediate member 15 can be deformed so as to expand and contract in the radial direction.
• a tapered contact surface 16 is formed on the outer peripheral surface of the intermediate member 15.
• a tapered inner surface (inclined inner surface) 17 engageable with the tapered contact surface 16 is formed on the inner peripheral surface of the positioning hole 5 of the positioning ring 85.
• the tapered contact surface 16 forms a contact surface that can be adhered to the inner peripheral surface of the positioning hole 5 (the tapered inner surface 17).
• the tapered contact surface 16 and the tapered inner surface 17 are formed in such a shape that they approach the axis as they approach the tip of the shaft 12.
• a plurality of dishpanes (advancing means) 25 are arranged in a stacked manner.
• the intermediate member 15 is urged upward (that is, in a direction to make the taper engagement between the tapered contact surface 16 and the tapered inner surface 17 tight) by the counter panel 25.
• a retaining ring 66 for receiving the upper end of the intermediate member 15 is fitted in the middle of the center column 12, thereby defining the upper end of the movement stroke of the intermediate member 15. ing.
• a piston 22 is inserted below the reference block 9 in a sealed state.
• a piston rod 23 is formed so as to protrude upward from the piston 22, and the piston rod 23 is inserted into the shaft hole of the center column 12 in the axial direction.
• a plurality of through-holes 81 are formed at predetermined intervals in the circumferential direction at the upper portion of the center column 12, and a steel ball 82 is supported in each of the through-holes 81 so as to be movable in the radial direction.
• a reduced diameter portion is formed at the outer end of the through hole 81, and the reduced diameter portion prevents the steel ball 82 from falling off the through hole 81.
• the output inclined surface 83 and the evacuation groove 84 are formed so as to be vertically connected so as to be able to face the steel ball 82.
• the tension member 21 includes the piston 22, the piston rod 23, the steel ball 82, and the output inclined surface 83.
• a transmission device 86 is supported on the upper end of the center column 12 in a sealed manner, and is movable vertically.
• a cleaning hole 87 is formed in the transmission device 86.
• An urging panel 88 is provided between the transmission 86 and the upper end surface of the piston rod 23. The urging panel 88 urges the transmission 86 upward.
• Locking means and release means are provided in the reference block 9.
• the mouth means is constituted by the piston 22 and a biasing panel 34 disposed above the piston 22.
• the biasing panel 34 is configured as a dish panel in which a plurality of plates are stacked.
• the release means includes the piston 22 and a release hydraulic chamber 35 formed below the piston 22.
• an air port 39 is provided on the lower surface of the reference block 9, and a relay opening 41 is formed on the outer peripheral surface of the center column 12.
• the air port 39 and the relay opening 41 communicate with each other via an air passage 40 formed inside the reference block 9.
• the ejection holes 38 formed in the intermediate member 15 are formed so as to penetrate the intermediate member 15 in the radial direction, that is, to open one end to the tapered outer surface 13 and the other end to the inner peripheral surface. The other end faces the relay opening 41.
• the counter panel 25 for urging the intermediate member 15 upward may be a single panel instead of a stack of a plurality of panels, and may be formed of another type of spring or rubber such as a coil spring. Alternatives are possible. Further, instead of the plate panel 25, a configuration may be adopted in which a piston for driving the intermediate member 15 upward by air pressure or hydraulic pressure is provided as an advancing means.
• the number of the ejection holes 38 is one, but a plurality of ejection holes 38 can be formed.
• the outer peripheral surface of the center column 12 or the inner peripheral surface of the intermediate member 15 serves as a flow passage. It is only necessary to provide a communication groove so that the opening end of each ejection hole 38 formed on the inner peripheral surface of the intermediate member 15 faces the communication groove.
• FIG. 8 is a diagram showing a cluster according to a sixth embodiment of the present invention.
• FIG. 8 is an elevational sectional view showing a locked state of the pump device, similar to FIG. 7 (a).
• the sixth embodiment is equivalent to a modification of the fifth embodiment described above, and differs from the fifth embodiment in the following points. That is, as shown in FIG. 8, the intermediate member 15 is vertically movably supported by a support hole 92 formed in the positioning ring 85 instead of being supported by the above-mentioned center column 12. As in the fifth embodiment, the intermediate member 15 is formed in a collet shape having the slits 18. A straight surface is formed on the outer peripheral surface, and a tapered inner surface (inclined inner surface) is formed on the inner peripheral surface. Is formed.
• the inner peripheral surface of the support hole 92 of the positioning ring 85 is formed as a straight surface, and the outer peripheral surface of the intermediate member 15 is supported on the inner peripheral surface.
• the tapered inner surface 17 that is the inner peripheral surface of the intermediate member 15 corresponds to the inner peripheral surface of the positioning hole 5.
• the pillar 12 protruding from the reference block 9 does not have a straight outer peripheral surface but forms a tapered contact surface 16.
• the tapered inner surface 17 as the inner peripheral surface of the intermediate member 15 is configured to be capable of being taperedly engaged with the tapered contact surface 16.
• a coned disc spring 25 as an advancing means is disposed, and the intermediate member 15 is moved downward (that is, the taper between the taper contact surface 16 and the taper inner surface 17). (To make the engagement tighter).
• a retaining ring 66 for receiving the lower end of the intermediate member 15 is fitted to the lower end of the support hole 92, thereby defining the lower end of the movement stroke of the intermediate member 15. .
• One end of the air passage 40 connected to the air port 39 is opened on the outer peripheral surface of the center pillar 12, that is, the tapered contact surface 16.
• the plug portion 27 of the present invention includes the center column 12, the steel balls 82, the transmission 86, and the like.
• the plug portion 27 has a shape protruding from the base plate 2 so that it can be inserted into the positioning hole 5.
• the tapered contact surface 16 as the outer peripheral surface of the center column 12 forms an adhesive surface that can be in close contact with the outer peripheral surface of the plug portion 27, that is, the inner peripheral surface of the positioning hole 5.
• the number of the ejection holes 38 is one, but a plurality of ejection holes 38 can be formed.
• the air passage 40 may be provided in a branched shape and connected to each of the ejection holes 38.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Jigs For Machine Tools (AREA)
• Quick-Acting Or Multi-Walled Pipe Joints (AREA)
• Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
• Vehicle Body Suspensions (AREA)
• Lock And Its Accessories (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=34131586

Family Applications (1)

Country Status (8)

Cited By (3)

Families Citing this family (18)

Citations (7)

Family Cites Families (6)

• 2003
  • 2003-08-08 JP JP2003290377A patent/JP4493952B2/ja not_active Expired - Lifetime
• 2004
  • 2004-07-16 WO PCT/JP2004/010196 patent/WO2005014225A1/ja not_active Ceased
  • 2004-07-16 AT AT04747662T patent/ATE441498T1/de not_active IP Right Cessation
  • 2004-07-16 DE DE602004022956T patent/DE602004022956D1/de not_active Expired - Lifetime
  • 2004-07-16 CN CNB2004800257922A patent/CN100478128C/zh not_active Expired - Fee Related
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  • 2004-07-26 TW TW093122304A patent/TW200524701A/zh unknown

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