CN109414765B - Structure and rotary cylinder - Google Patents
Structure and rotary cylinder Download PDFInfo
- Publication number
- CN109414765B CN109414765B CN201780040006.3A CN201780040006A CN109414765B CN 109414765 B CN109414765 B CN 109414765B CN 201780040006 A CN201780040006 A CN 201780040006A CN 109414765 B CN109414765 B CN 109414765B
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- China
- Prior art keywords
- annular
- cylinder
- peripheral surface
- cylindrical
- rotary
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/24—Chucks characterised by features relating primarily to remote control of the gripping means
- B23B31/30—Chucks characterised by features relating primarily to remote control of the gripping means using fluid-pressure means in the chuck
- B23B31/302—Hydraulic equipment, e.g. pistons, valves, rotary joints
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/24—Chucks characterised by features relating primarily to remote control of the gripping means
- B23B31/30—Chucks characterised by features relating primarily to remote control of the gripping means using fluid-pressure means in the chuck
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/24—Chucks characterised by features relating primarily to remote control of the gripping means
- B23B31/30—Chucks characterised by features relating primarily to remote control of the gripping means using fluid-pressure means in the chuck
- B23B31/305—Chucks characterised by features relating primarily to remote control of the gripping means using fluid-pressure means in the chuck the gripping means is a deformable sleeve
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
- Actuator (AREA)
- Gripping On Spindles (AREA)
Abstract
A structural body includes a fluid passage portion formed with a fitting recess, a tubular member fitted along a tubular center line with respect to the fitting recess from a distal end opening side and having a through hole formed with a 1 st screw portion on an inner peripheral surface, and a pipe having a 2 nd screw portion screwed to the 1 st screw portion from a proximal end opening side of the tubular member. A structure is provided which can prevent the occurrence of the burn-in or the leakage of a component by simply setting the amount of screwing of a pipe of a rotary cylinder to an appropriate range, using the rotary cylinder as an example.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to a structure and a rotary cylinder.
[ background art ] A liquid crystal display
For example, a conventional rotary cylinder disclosed in patent document 1 includes a cylinder body having a slide hole at a rotation center, a piston slidably inserted into the slide hole along the rotation center, and a rotary support body rotatably supporting the cylinder body via a bearing, and the cylinder body is formed with a cylinder chamber extending annularly around the rotation center and opening into the slide hole. The piston includes an annular flange portion that rotates around the rotation center, and the flange portion is housed in the cylinder chamber and divides the cylinder chamber into a 1 st space and a 2 nd space along the rotation center. The outer peripheral wall of the cylinder body is formed with a 1 st fluid guide hole having one end opened in the 1 st space and the other end opened in the outer peripheral surface of the cylinder body, and a 2 nd fluid guide hole having one end opened to the 2 nd space and the other end opened in the outer peripheral surface of the cylinder body. The inner peripheral surface of the rotary support body is formed with ring-shaped 1 st and 2 nd groove portions rotating around a rotation center, the 1 st and 2 nd groove portions corresponding to the respective other end portions of the 1 st and 2 nd fluid guide holes, respectively. And, on the one hand, the fluid is made to flow into the 1 st space through the 1 st groove part and the 1 st fluid guide hole, and the fluid is made to flow out from the 2 nd space through the 2 nd fluid guide hole and the 2 nd groove part, or, on the other hand, the fluid is made to flow into the 2 nd space through the 2 nd fluid guide hole and the 2 nd groove part, and the fluid is made to flow out from the 1 st space through the 1 st groove part and the 1 st fluid guide hole, and the piston is made to slide along the rotation center.
[ Prior art documents ]
[ patent document ]
[ patent document 1 ] Japanese patent application laid-open No. 2006-21313
[ summary of the invention ]
[ problem to be solved ]
However, as in patent document 1, 2 pipes are provided on the outer peripheral wall of the rotation support body of the rotation cylinder at positions corresponding to the 1 st groove and the 2 nd groove. The end of each pipe is provided with a male screw portion, and the outer peripheral wall of the rotary support body is formed with a screw hole having a female screw portion on the inner peripheral surface, and the female screw portion of the screw hole is screwed into the male screw portion of the pipe to connect the pipe and the rotary support body to each other.
However, in the rotary cylinder as in patent document 1, in general, since the pipe screwing operation is manually performed by a worker, the pipe screwing operation by each worker is liable to be uneven. Therefore, if the amount of the pipe screwed by the worker exceeds the appropriate range, the male screw portion of the pipe and the female screw portion of the rotary support body are generally tapered to improve the mutual engagement, and therefore, the tapered surface of the male screw portion of the pipe expands the threaded hole and deforms the rotary support body, so that there is no gap between the rotary support body and the cylinder body, there is a possibility that marks may be generated on each component due to the contact between the rotary support body and the cylinder body during rotation of the cylinder body, and if the amount of the pipe screwed by the worker is smaller than the appropriate range, the engagement between the male screw portion of the pipe and the female screw portion of the rotary support body becomes low, and there is a possibility that fluid may leak from this portion.
The present invention has been made in view of the above circumstances, and an object thereof is to provide a structure (for example, a rotary support body) capable of preventing occurrence of burning or leakage of a component by easily setting a screwing amount of a pipe of a rotary cylinder to an appropriate range, using the rotary cylinder as an example.
[ MEANS FOR solving PROBLEMS ] A liquid crystal display device
According to the present invention, there is provided a structure including a fluid passage portion formed with a fitting recess, a tubular member fitted from a distal end opening side along a tubular center line with respect to the fitting recess and having a through hole formed with a 1 st screw portion on an inner peripheral surface, and a pipe having a 2 nd screw portion screwed to the 1 st screw portion from a proximal end opening side of the tubular member.
In the structure of the present invention, when the worker screws the 2 nd screw portion of the pipe into the 1 st screw portion of the tubular member, the structure body and the tubular member are different from each other, and therefore, even if the tubular member is deformed as the amount of the pipe to be screwed becomes large, the deformed portion hardly affects the structure, and the deformation of the structure becomes small. Therefore, the appropriate range of the amount of screwing of the pipe becomes substantially wider than that of the structure of the revolving cylinder as in patent document 1, so that even if the screwing operation by the worker is somewhat uneven, such as excessive deformation of the structure or the case where the degree of tightness between the 1 st screw part and the 2 nd screw part of the pipe becomes low, leakage from between the 1 st screw part and the 2 nd screw part of the pipe or branding of the structure is prevented.
Various embodiments of the present invention are exemplified below. The embodiments shown below may be combined with each other.
Preferably, the 1 st and 2 nd screw parts have a tapered shape, and are respectively female and male screw parts.
Preferably, the inner peripheral surface of the fitting recess is provided with an annular inner protruding portion and a recessed groove portion, and the annular inner protruding portion is formed in a manner of protruding in a stepped manner so that the inner peripheral surface diameter of the fitting recess on the inner end side is smaller than the inner peripheral surface diameter of the opening side; the concave groove portion is formed closer to the opening side of the fitting concave portion than the annular inner protruding portion, and extends annularly along the annular inner protruding portion, the tube member includes a cylindrical portion provided on the front end opening side, and an annular outer protruding portion continuously provided on the cylindrical portion and protruding outward from the outer peripheral surface of the cylindrical portion, and the tube member is attached by: the cylindrical portion is fitted inside the annular inner protruding portion, the annular outer protruding portion is fitted in a portion of the fitting recess other than the annular inner protruding portion, and a retaining ring is fitted in the groove portion so as to sandwich the annular outer protruding portion between the retaining ring and the annular inner protruding portion.
Preferably, the respective center portions of the cylindrical portion and the annular outer extension portion coincide with a cylindrical center line of the cylindrical member.
Preferably, a center portion of the cylindrical portion is eccentric with respect to a cylindrical center line of the cylindrical member.
Preferably, an annular first seal member 1 made of a rubber material is provided between an inner peripheral surface of the annular inner protruding portion and an outer peripheral surface of the cylindrical portion, the first seal member 1 is in contact with the inner peripheral surface of the annular inner protruding portion and the outer peripheral surface of the cylindrical portion throughout the entire circumference, an annular inclined surface is formed on an outer peripheral portion of the annular outer protruding portion, the annular inclined surface is inclined so as to gradually approach a cylinder center line of the cylindrical member as approaching a front end side of the cylindrical member,
an annular 2 nd seal member made of a rubber material is provided between the annular inner protruding portion and the annular inclined surface, and the 2 nd seal member is in contact with the annular inner protruding portion and the annular inclined surface throughout the entire circumference, and has an outer circumferential portion in contact with an inner circumferential surface of the fitting recess portion excluding the annular inner protruding portion throughout the entire circumference.
Preferably, the rotary cylinder includes a cylinder body that supports the piston by a shaft, and a rotary support body that supports the cylinder body by a shaft, and the rotary cylinder is configured such that: when fluid is introduced into a cylinder chamber provided between the rotary support body and the cylinder main body to press the piston, the cylinder main body rotates about a rotary shaft and the piston can slide along the rotary shaft.
Preferably, the rotary cylinder includes a cylinder body having a slide hole at a rotation center, a piston slidably inserted into the slide hole along the rotation center, and a rotary support body supporting the cylinder body to be rotatable about the rotation center, the cylinder body is formed with a cylinder chamber extending annularly about the rotation center and opening into the slide hole, the piston is provided with a flange portion extending annularly about the rotation center and housed in the cylinder chamber to divide the cylinder chamber into 1 st and 2 nd spaces, the cylinder body and the rotary support body are provided with a fluid inlet/outlet means for allowing a fluid to enter/exit the 1 st and 2 nd spaces to slide the piston along the rotation center, the fluid inlet/outlet means includes: a fluid passage portion having one end opened to the 1 st or 2 nd space and the other end formed with a fitting recess opened to an outer peripheral surface of the rotary support body; a tubular member having a through hole in which a tapered female screw portion is formed on an inner peripheral surface thereof, the tubular member being fitted to the fitting recess along a tubular center line from a distal end opening side; and a pipe having a tapered male screw portion screwed to the female screw portion from a base end opening side of the tubular member.
[ description of the drawings ]
Fig. 1 is a sectional view of a rotary cylinder according to embodiment 1 of the present invention.
Fig. 2 is a view from direction II of fig. 1.
Fig. 3 is a view corresponding to fig. 1, showing a sliding state of the piston.
Fig. 4 is an IV view of fig. 2.
Fig. 5 is a cross-sectional view taken along line V-V of fig. 4.
Fig. 6 is a view corresponding to fig. 5 according to embodiment 2 of the present invention.
Fig. 7 is a cross-sectional view taken along line VII-VII of fig. 6.
[ detailed description ] embodiments
The following is a detailed description of embodiments of the present invention with reference to the drawings. The following description of the preferred embodiments is merely exemplary. In particular, in order to explain the structure (rotary support body) according to the present invention, a rotary cylinder which is attached to a machine tool such as a lathe, rotatably supports a chuck device, and performs a gripping operation by the chuck device or a releasing operation of a gripped state will be described as an example.
(embodiment 1 of the invention)
Fig. 1 and 2 show a rotary cylinder 1 according to embodiment 1 of the present invention. The rotary cylinder 1 is rotatably supported by a chuck device (not shown) attached to a machine tool such as a lathe, performs a gripping operation by the chuck device or a releasing operation of the gripping state, and includes a cylinder body 2 having a substantially T-shape in a side view.
The cylinder body 2 includes: a cylindrical rotating shaft 2 a; and a rotation disk part 2b continuously provided at one end of the rotation shaft part 2a and having a central axis coincident with a cylinder center line of the rotation shaft part 2 a. The cylinder body 2 is rotatable around a rotation center C1, which is a center line of the rotation shaft 2a and a center axis of the rotation disk 2b as the rotation center C1.
The rotation center C1 of the cylinder body 2 is formed with a slide hole 20 having both ends opened, and the rotation disk part 2b is formed with a cylinder chamber 10 extending annularly around the rotation center C1 and opened in the slide hole 20.
A coupling portion of the outer peripheral surface of the rotation disk portion 2b and the outer peripheral surface of the rotation shaft portion 2a is formed with a ring portion 2f projecting outward in a stepwise shape along the rotation center C1.
Further, a ring-shaped stopper member 2g is attached to the other end of the rotation shaft 2a so as to protrude in a direction perpendicular to the rotation center C1 and extend around the rotation center C1, and the stopper member 2g is located at a predetermined interval from the ring portion 2 f.
A pair of bearings B1 formed in a ring shape is fitted to the outer peripheral surface of the rotating shaft 2a, and the pair of bearings B1 are provided between the ring portion 2f and the stopper member 2g and adjacent to each other, respectively, to the ring portion 2f and the stopper member 2 g.
Further, the outer peripheral walls of the rotation shaft portion 2a and the rotation disk portion 2b are formed with a 1 st fluid guide hole 2d and a 2 nd fluid guide hole 2e, and one end of the 1 st fluid guide hole 2d and the 2 nd fluid guide hole 2e is opened in the cylinder chamber 10, and the other end is opened in a middle portion of the outer peripheral surface of the rotation shaft portion 2 a.
The sliding hole 20 is inserted with a piston 3, and the piston 3 can slide along the rotation center C1.
The piston 3 includes a cylindrical portion 3a having a cylinder center line of the cylindrical portion 3a coincident with the rotation center C1, and a flange portion 3b projecting outward from an outer peripheral surface of the cylindrical portion 3a and extending annularly around the rotation center C1, and as shown in fig. 3, the flange portion 3b is accommodated in the cylinder chamber 10 and divides the cylinder chamber 10 into a 1 st space 10a and a 2 nd space 10b in an extending direction of the rotation center C1.
A cover 3c for closing an opening of an end portion of the cylindrical portion 3a on a side away from the rotary disk portion 2b is attached to the end portion.
A rotation support body 4 is provided around the rotation shaft 2a to support the rotation shaft 2a to be rotatable around the rotation center C1.
The rotary support body 4 includes an annular portion 41 having an inner diameter whose center coincides with the rotation center C1, a fluid reservoir 44 provided below the annular portion 41 and having a short cylindrical shape in the upper and lower portions, and a cover member 45 fixed to one opening side edge of the annular portion 41 and covering the other end side of the rotation shaft portion 2a and the cover 3C side of the piston 3, the annular portion 41 having a shaft support hole 41a at the rotation center C1 axis.
An annular wide portion 41B extending annularly around the rotation center C1 is formed at a position corresponding to a position between the two bearings B1 forming the inner peripheral surface of the shaft support hole 41a of the annular portion 41, and a slight gap is provided between the distal end surface of the annular wide portion 41B and the outer peripheral surface of the rotation shaft portion 2 a.
The two bearings B1 are interposed between the portion other than the annular wide portion 41B forming the inner peripheral surface of the shaft support hole 41a of the annular portion 41 and the outer peripheral surface of the rotation shaft portion 2a, and the cylinder body 2 is rotated about the rotation center C1 with respect to the rotation support 4 by the two bearings B1.
The front end surface of the annular wide portion 41b is provided with an annular 1 st groove portion 41C and an annular 2 nd groove portion 41d extending around a rotation center C1, the 1 st groove portion 41C corresponding to the other end of the 1 st fluid guide hole 2d, and the 2 nd groove portion 41d corresponding to the other end of the 2 nd fluid guide hole 2 e.
As shown in fig. 2, a 1 st fitting recess 42 that is open on the outer peripheral surface and communicates with the 1 st groove portion 41c via a 1 st communicating portion 42a is formed on one side surface of the annular portion 41; and a 2 nd fitting recess portion 43 which is opened in an outer peripheral surface and communicates with the 2 nd groove portion 41d via a 2 nd communicating portion 43 a.
As shown in fig. 5, an annular inner protruding portion 42b having a smaller diameter than the inner peripheral surface of the 1 st fitting recess 42 on the opening side is formed on the inner peripheral surface of the 1 st fitting recess 42 on the rear end side.
Further, a recessed groove portion 42c extending annularly along the annular inner extending portion 42b is formed on the inner peripheral surface from the annular inner extending portion 42b to the opening side of the 1 st fitting recess 42.
The configuration of the 2 nd fitting recess 43 is the same as that of the 1 st fitting recess 42, and therefore, detailed description thereof is omitted.
The 1 st fluid guide hole 2d, the 1 st groove portion 41c, the 1 st communicating portion 42a, and the 1 st fitting recess portion 42 constitute a 1 st fluid passage portion 11a of the present invention, the 2 nd fluid guide hole 2e, the 2 nd groove portion 41d, the 2 nd communicating portion 43a, and the 2 nd fitting recess portion 43 constitute a 2 nd fluid passage portion 11b of the present invention, one end of the 1 st fluid passage portion 11a is opened in the 1 st space 10a, and one end of the 2 nd fluid passage portion 11b is opened in the 2 nd space 10 b.
As shown in fig. 2, the 1 st fitting recess 42 is fitted with the tube member 5 having a through hole 5a penetrating along the tube center line C2 along the tube center line C2.
As shown in fig. 5, the tubular member 5 includes a cylindrical portion 51 provided on the distal end opening side, and an annular outer protruding portion 52 continuously provided on the cylindrical portion 51 and protruding outward from the outer peripheral surface of the cylindrical portion 51, and a tapered female screw portion 5b is formed on the inner peripheral surface of the tubular member 5 on the proximal end opening side.
The central portions of the cylindrical portion 51 and the annular outer extension portion 52 are aligned with a cylindrical center line C2 of the cylindrical member 5.
A concave groove 51b for a seal member extending annularly around a cylinder center line C2 is formed in the outer peripheral surface of the cylindrical portion 51, and an annular 1 st seal member 6 made of a rubber material is fitted into the concave groove 51b for a seal member.
As shown in fig. 2, a pair of flat portions 5C serving as portions for catching a tool or the like are formed on the outer peripheral surface of the tubular member 5 on the base end opening side in parallel with the tubular center line C2.
As shown in fig. 5, an annular inclined surface 52a is formed on an outer peripheral portion of the annular outer projecting portion 52, and the annular inclined surface 52a is inclined so as to gradually approach the cylinder center line C2 as it approaches the distal end side of the cylinder member 5.
An annular 2 nd seal member 7 made of a rubber material is disposed on the annular inner extension 42b side of the opening-side inner peripheral surface of the 1 st fitting recess 42, and the outer peripheral portion of the 2 nd seal member 7 is in contact with the opening-side inner peripheral surface of the 1 st fitting recess 42 over the entire circumference.
When the tubular member 5 is inserted into the 1 st fitting recess 42 from the distal end side, the cylindrical portion 51 is fitted inside the annular inner protruding portion 42b, the annular outer protruding portion 52 is fitted in a portion of the 1 st fitting recess 42 other than the annular inner protruding portion 42b, and the 1 st seal member 6 is in contact with the inner circumferential surface of the annular inner protruding portion 42b and the outer circumferential surface of the cylindrical portion 51 over the entire circumference between the inner circumferential surface of the annular inner protruding portion 42b and the outer circumferential surface of the cylindrical portion 51.
When the tubular member 5 is inserted into the 1 st fitting recess 42 from the distal end side, the annular outer projecting portion 52 abuts against the annular inner projecting portion 42b, and the 2 nd seal member 7 is in contact with the annular inner projecting portion 42b and the annular inclined surface 52a over the entire circumference between the annular inner projecting portion 42b and the annular outer projecting portion 52, while the outer peripheral portion of the 2 nd seal member 7 is in contact with the opening-side inner peripheral surface of the 1 st fitting recess 42 (the portion of the 1 st fitting recess 42 other than the annular inner projecting portion 42 b) over the entire circumference.
Further, the tubular member 5 is attached to the rotation support body 4 by fitting the retaining ring 8 into the recessed groove portion 42C with the annular outer projecting portion 52 in contact with the annular inner projecting portion 42b and sandwiching the annular outer projecting portion 52 between the retaining ring 8 and the annular inner projecting portion 42b, and is rotatable about the tubular center line C2 with respect to the 1 st fitting recess 42.
Similarly to the 1 st fitting recess 42, the tubular member 5 is fitted into the 2 nd fitting recess 43, is attached to the rotary support 4 using the retaining ring 8, and is rotatable about a tubular center line C2.
As shown in fig. 2 and 4, the 1 st pipe 9a and the 2 nd pipe 9b are provided on one side of the annular portion 41 in a shape of approximately L in side view, and the 1 st pipe 9a and the 2 nd pipe 9b can flow a fluid into or out of the 1 st groove portion 41c and the 2 nd groove portion 41 d.
As shown in fig. 5, the 1 st pipe 9a has a tapered male screw portion 9c, and the male screw portion 9c is screwed to the female screw portion 5b of the cylindrical member 5 from the base end opening side of the cylindrical member 5 fitted into the 1 st fitting recess 42.
The 2 nd pipe 9b has a male screw portion 9c similar to the 1 st pipe 9a, and the male screw portion 9c is screwed to the female screw portion 5b of the cylindrical member 5 from the base end opening side of the cylindrical member 5 fitted into the 2 nd fitting recess 43.
The 1 st fluid channel part 11a, the tubular member 5 and the 1 st pipe 9a constitute the 1 st fluid inlet/outlet means 12a of the present invention, and the 2 nd fluid channel part 11b, the tube member 5 and the 2 nd pipe 9b constitute the 2 nd fluid inlet/outlet means 12b of the present invention, and when the 1 st fluid inlet/outlet means 12a makes the fluid flow into the 1 st space 10a, when the fluid is discharged from the 2 nd space 10b by the 2 nd fluid inlet/outlet means 12b, the piston 3 slides to one side along the rotation center C1, and if the fluid is flowed into the 2 nd space 10b by the 2 nd fluid inlet and outlet means 12b, when the fluid is discharged from the 1 st space 10a by the 1 st fluid inlet/outlet means 12a, the piston 3 slides to the other side along the rotation center C1.
Thus, according to embodiment 1 of the present invention, when the worker screws the male screw portions 9c of the 1 st pipe 9a and the 2 nd pipe 9b into the female screw portion 5b of the tubular member 5, the rotary support body 4 and the tubular member 5 are independent of each other, and therefore, even if the screw amount of the male screw portions 9c of the 1 st pipe 9a and the 2 nd pipe 9b is increased to deform the tubular member 5, the deformed portions thereof hardly affect the rotary support body 4, and thus the deformation of the rotary support body 4 is reduced. Accordingly, the appropriate range of the amount of screwing of the 1 st pipe 9a and the 2 nd pipe 9b is substantially wider than that of the conventional revolving cylinder 1 of patent document 1, and even if the screwing operation by the worker is not uniform to a different degree, the revolving support body 4 is not excessively deformed, or the degree of tightness between the male screw portions 9c and the female screw portions 5b of the 1 st pipe 9a and the 2 nd pipe 9b is lowered, and leakage between the male screw portions 9c and the female screw portions 5b of the 1 st pipe 9a and the 2 nd pipe 9b and seizing of the revolving support body 4 and the cylinder main body 2 can be prevented.
Further, since the cylindrical member 5 can be attached to the rotary support body 4 only by fitting the cylindrical member 5 into the 1 st fitting recess 42 and the 2 nd fitting recess 43 and fitting the retaining ring 8 into the groove portion 42c, the operation of attaching the cylindrical member 5 is facilitated, and the manufacturing cost can be reduced.
Further, since the central portions of the cylindrical portion 51 and the annular outer extension portion 52 are aligned with the cylinder center line C2 of the cylindrical member 5, the cylindrical member 5 can rotate about the cylinder center line C2 in the 1 st and 2 nd fitting recesses 42 and 43. Therefore, even when the postures of the 1 st pipe 9a and the 2 nd pipe 9b with respect to the rotary support 4 are restricted in order to avoid interference with other structures arranged around the rotary cylinder 1, the postures of the 1 st pipe 9a and the 2 nd pipe 9b can be set to positions desired by the worker regardless of the screwing amounts by rotating the tubular member 5 around the tubular center line C2 in a state where the male screw portions 9C of the 1 st pipe 9a and the 2 nd pipe 9b are screwed into the female screw portions 5 b. Further, since it is not necessary to interpose the seal tape between the male screw portion 9c and the female screw portion 5b of the 1 st pipe 9a and the 2 nd pipe 9b to adjust the amount of screwing, the screwing operation by the worker is simplified.
Further, the 2 nd seal member 7 restricts the movement of the cylindrical member 5 not only in the direction orthogonal to the cylinder center line C2 but also in the direction along the cylinder center line C2, and therefore the cylindrical member 5 is firmly fixed to the rotary support 4. Accordingly, it is possible to prevent the vibration of the tubular member 5 in the direction of the tubular center line C2 due to the fluctuation or the like when the fluid flows through the 1 st pipe 9a and the 2 nd pipe 9b, and the abrasion due to the friction between the 1 st seal member 6 and the inner circumferential surfaces of the 1 st and 2 nd fitting concave portions 42 and 43 and the outer circumferential surface of the cylindrical portion 51.
Fig. 6 and 7 show a rotary cylinder 1 according to embodiment 2 of the present invention. Embodiment 2 is the same as embodiment 1 except that the partial structures of the tubular member 5 and the 1 st and 2 nd fitting recesses 42 and 43 are different from those of embodiment 1 and the 2 nd sealing member 7 is not used, and therefore only the portions different from embodiment 1 will be described below.
The through-hole 5a of embodiment 2 is configured to have a smaller diameter on the distal end opening side than on the proximal end opening side.
A cylinder center line C3 (central portion) of the cylinder portion 51 of embodiment 2 is eccentric with respect to a cylinder center line C2 of the cylinder member 5.
The annular inner protruding portion 42b of the 1 st fitting recess 42 according to embodiment 2 is formed so as to be displaced upward relative to the portion of the 1 st fitting recess 42 other than the annular inner protruding portion 42b so as to correspond to the cylindrical portion 51 of the tubular member 5.
The annular outer projecting portion 52 of embodiment 2 is formed in a region of the tubular member 5 other than the cylindrical portion 51.
An annular concave groove 52b for a sealing member extending around a cylinder center line C2 is formed in the outer peripheral surface of the annular outer projecting portion 52, and the 1 st sealing member 6 is fitted into the concave groove 52b for a sealing member.
Since the configuration of the 2 nd fitting recess 43 is the same as that of the 1 st fitting recess 42, the same reference numerals as those of the 1 st fitting recess 42 are given, and detailed description thereof is omitted.
Thus, according to embodiment 2 of the present invention, when the worker screws the male screw portion 9C of the 1 st and 2 nd pipes 9a, 9b into the female screw portion 5b of the tubular member 5, the cylindrical portion 51 is caught by the annular inside extension portion 42b, and therefore the tubular member 5 does not rotate about the tubular center line C2. Therefore, it is not necessary to form a portion on the outer peripheral surface of the tubular member 5, which prevents the tubular member 5 from rotating due to a tool or the like being caught when screwing the 1 st and 2 nd pipes 9a, 9b, and it is not necessary to project the tubular member 5 from the 1 st fitting recess 42 and the 2 nd fitting recess 43, and the overall length of the tubular member 5 can be shortened.
[ possibility of Industrial utilization ]
The present invention is suitable for a rotary cylinder which is attached to a machine tool such as a lathe, rotatably supports a chuck device, and performs a gripping operation by the chuck device or a releasing operation of a gripping state.
As described above, according to the present embodiment, the rotary cylinder is taken as an example, and it is possible to provide a structure (for example, a rotary support body) capable of preventing occurrence of seizing or leakage of a component by easily setting the amount of screwing of the pipe within an appropriate range.
The embodiments of the present invention have been described, but these are merely examples and the scope of the present invention is not limited thereto. The embodiments may be implemented in other embodiments, and various omissions, substitutions, and changes may be made without departing from the technical spirit of the present invention. The embodiments and modifications thereof fall within the scope and technical spirit of the invention, and also fall within the scope and equivalents of the invention described in the claims.
[ notation ] to show
1 Rotary Cylinder
2 cylinder body
3 piston
3b flange part
4 rotating support
5-cylinder part
5b female screw part
6 st sealing member
7 nd 2 nd seal member
8 retainer ring
9c male screw part
10 cylinder chamber
12a No. 1 fluid inlet and outlet means
20 sliding hole
42 st 1 fitting recess
43 nd 2 fitting recess
42b annular inner extension
42c groove
51 cylindrical part
52 annular outer extension
52a annular inclined surface
Center of rotation of C1
C2 tube center line
C3 drum centerline (center portion).
Claims (7)
1. A rotary cylinder is provided with:
a cylinder main body whose shaft supports a piston; and
a rotary support body that supports the cylinder main body;
the rotary cylinder is characterized by further comprising:
a tubular member fitted to the rotary support body; and
a pipe screwed to the tubular member,
when fluid is made to flow into a cylinder chamber provided between the rotary support body and the cylinder main body to press the piston, the cylinder main body rotates around a rotary shaft and the piston is slidable along the rotary shaft, a fluid passage portion is formed in the rotary support body,
a fitting recess is formed in the fluid passage portion,
the fitting recess is formed to open on the outer peripheral surface of the rotary support body,
the tube member is fitted to the fitting recess along a tube center line from a front end opening side and has a through hole having a 1 st screw portion formed on an inner peripheral surface thereof,
the pipe has a 2 nd screw portion screwed to the 1 st screw portion from a base end opening side of the tubular member.
2. The rotary cylinder according to claim 1, wherein the 1 st and 2 nd threaded portions have a tapered shape, being female and male threaded portions, respectively.
3. A rotary cylinder according to claim 1 or 2,
the inner peripheral surface of the embedding concave part is provided with an annular inner extending part and a concave strip groove part, and the annular inner extending part is formed in a mode of extending in a step shape in a mode that the inner peripheral surface diameter of the inner end side of the embedding concave part is smaller than that of the inner peripheral surface of the opening side; the recessed groove portion is formed at a position closer to the opening side of the fitting recessed portion than the annular inner projecting portion and extends annularly along the annular inner projecting portion,
the tubular member includes a cylindrical portion provided on a distal end opening side, and an annular outer protruding portion provided continuously to the cylindrical portion and protruding outward from an outer peripheral surface of the cylindrical portion, and is configured to be attached to the tubular member by: the cylindrical portion is fitted inside the annular inner protruding portion, the annular outer protruding portion is fitted in a portion of the fitting recess other than the annular inner protruding portion, and a retaining ring is fitted in the groove portion so as to sandwich the annular outer protruding portion between the retaining ring and the annular inner protruding portion.
4. The rotary cylinder according to claim 3,
the central portions of the cylindrical portion and the annular outer extension portion coincide with a cylindrical center line of the cylindrical member.
5. The rotary cylinder according to claim 3,
the center portion of the cylindrical portion is eccentric with respect to a cylindrical center line of the cylindrical member.
6. The rotary cylinder according to claim 3,
an annular first sealing member 1 made of a rubber material is provided between an inner peripheral surface of the annular inner protruding portion and an outer peripheral surface of the cylindrical portion, the first sealing member 1 being in contact with the inner peripheral surface of the annular inner protruding portion and the outer peripheral surface of the cylindrical portion over the entire circumference,
an annular inclined surface is formed on the outer peripheral portion of the annular outer extension portion, and the annular inclined surface is inclined so as to gradually approach the tube center line of the tube member as the annular outer extension portion approaches the front end side of the tube member,
an annular 2 nd seal member made of a rubber material is provided between the annular inner protruding portion and the annular inclined surface, the 2 nd seal member being in contact with the annular inner protruding portion and the annular inclined surface over the entire circumference, and an outer peripheral portion of the 2 nd seal member being in contact with an inner peripheral surface of a portion of the fitting recess other than the annular inner protruding portion over the entire circumference.
7. The rotary cylinder according to claim 1,
the cylinder body has a sliding hole at a rotation center,
the piston is slidably inserted into the slide hole along the rotation center,
the rotary support body supports the cylinder main body so that the cylinder main body is rotatable about the rotation center,
the cylinder body is formed with a cylinder chamber that extends in a ring shape around the rotation center and opens at the slide hole,
the piston is provided with a flange portion which extends in a ring shape around the rotation center and is accommodated in the cylinder chamber to divide the cylinder chamber into a 1 st space and a 2 nd space,
the cylinder body and the rotary support body are provided with fluid inlet and outlet means for allowing the piston to slide along the rotation center by allowing fluid to enter and exit the 1 st space and the 2 nd space,
the fluid inlet/outlet means has the fluid passage portion, the tubular member, and the pipe,
the fluid passage portion having one end opened to the 1 st space or the 2 nd space and the other end formed with the fitting recess,
the 1 st screw portion of the cylindrical member is a tapered female screw portion,
the 2 nd screw portion of the pipe is a tapered male screw portion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-149545 | 2016-07-29 | ||
| JP2016149545 | 2016-07-29 | ||
| PCT/JP2017/027622 WO2018021578A1 (en) | 2016-07-29 | 2017-07-31 | Structure and rotary cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109414765A CN109414765A (en) | 2019-03-01 |
| CN109414765B true CN109414765B (en) | 2020-07-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780040006.3A Active CN109414765B (en) | 2016-07-29 | 2017-07-31 | Structure and rotary cylinder |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP7125234B2 (en) |
| KR (1) | KR102375029B1 (en) |
| CN (1) | CN109414765B (en) |
| TW (1) | TWI722226B (en) |
| WO (1) | WO2018021578A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2107802A (en) * | 1937-11-13 | 1938-02-08 | Cleveland Brass Mfg Company | Means for making threaded connections |
| JP2005163960A (en) * | 2003-12-04 | 2005-06-23 | Hitachi Metals Ltd | Cap with purge port |
| CN1719047A (en) * | 2004-07-06 | 2006-01-11 | 株式会社三千里机械 | Hydraulic cylinder |
| JP2009270591A (en) * | 2008-04-30 | 2009-11-19 | Mitsubishi Heavy Ind Ltd | Fiber reinforced resin tube |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5238743Y1 (en) * | 1970-10-02 | 1977-09-02 | ||
| DE3537686A1 (en) * | 1985-10-23 | 1987-04-23 | Roehm Guenter H | OIL HYDRAULIC ACTUATED TENSION CYLINDER FOR TENSIONING DEVICES ON A ROTATING SPINDLE |
| JP2000055012A (en) * | 1998-08-07 | 2000-02-22 | Howa Mach Ltd | Rotary cylinder |
| JP2001219309A (en) * | 2000-02-07 | 2001-08-14 | Howa Mach Ltd | Chuck |
-
2017
- 2017-07-31 CN CN201780040006.3A patent/CN109414765B/en active Active
- 2017-07-31 WO PCT/JP2017/027622 patent/WO2018021578A1/en active Application Filing
- 2017-07-31 TW TW106125736A patent/TWI722226B/en active
- 2017-07-31 KR KR1020187037685A patent/KR102375029B1/en active IP Right Grant
- 2017-07-31 JP JP2018530446A patent/JP7125234B2/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2107802A (en) * | 1937-11-13 | 1938-02-08 | Cleveland Brass Mfg Company | Means for making threaded connections |
| JP2005163960A (en) * | 2003-12-04 | 2005-06-23 | Hitachi Metals Ltd | Cap with purge port |
| CN1719047A (en) * | 2004-07-06 | 2006-01-11 | 株式会社三千里机械 | Hydraulic cylinder |
| JP2009270591A (en) * | 2008-04-30 | 2009-11-19 | Mitsubishi Heavy Ind Ltd | Fiber reinforced resin tube |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI722226B (en) | 2021-03-21 |
| CN109414765A (en) | 2019-03-01 |
| KR102375029B1 (en) | 2022-03-15 |
| JPWO2018021578A1 (en) | 2019-05-23 |
| WO2018021578A1 (en) | 2018-02-01 |
| KR20190034162A (en) | 2019-04-01 |
| JP7125234B2 (en) | 2022-08-24 |
| TW201809520A (en) | 2018-03-16 |
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