WO2019187220A1 - シリンダ装置およびロッドの製造方法 - Google Patents
シリンダ装置およびロッドの製造方法 Download PDFInfo
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- WO2019187220A1 WO2019187220A1 PCT/JP2018/034745 JP2018034745W WO2019187220A1 WO 2019187220 A1 WO2019187220 A1 WO 2019187220A1 JP 2018034745 W JP2018034745 W JP 2018034745W WO 2019187220 A1 WO2019187220 A1 WO 2019187220A1
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- WIPO (PCT)
- Prior art keywords
- shaft portion
- forming member
- rod
- main shaft
- outer peripheral
- Prior art date
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3221—Constructional features of piston rods
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3228—Constructional features of connections between pistons and piston rods
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3271—Assembly or repair
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/129—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding specially adapted for particular articles or workpieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/006—Vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3214—Constructional features of pistons
Definitions
- the present invention relates to a cylinder device and a method for manufacturing a rod.
- an object of the present invention is to provide a cylinder device and a method of manufacturing a rod that can be easily manufactured.
- the cylinder device of the present invention includes a first member in which the rod is in sliding contact with the sliding contact member, and a second member that is not in sliding contact with the sliding contact member.
- the outer diameter of at least the first member side end of the second member is smaller than the outer diameter of the member, and the inner periphery of the first member and the outer periphery of the second member are It was set as the structure joined by the welding joining by friction.
- the rod manufacturing method of the present invention is a hollow first member that is a portion that is in sliding contact with the sliding contact member in the rod, and a portion that is not in sliding contact with the sliding contact member in the rod, and the outer diameter of the first member
- a step of preparing a second member having a portion having a smaller outer diameter, and rotating the first member while rotating at least one of the first member and the second member The first member and the second member after the inner peripheral surface of the first member and the outer peripheral surface of the second member are brought close to each other, and the inner peripheral surface of the first member and the outer peripheral surface of the second member are in contact with each other. And pressing the predetermined amount in the axial direction to join the first member and the second member by welding by friction.
- the manufacture of the cylinder device can be facilitated.
- connection shaft part formation member approach process in the manufacturing method of the rod of one Embodiment concerning this invention. It is sectional drawing which shows the connection shaft part formation member approach process in the manufacturing method of the rod of one Embodiment concerning this invention. It is sectional drawing which shows the state after the connection axial part coupling
- FIG. 1 shows a cylinder device 11 of the present embodiment.
- the cylinder device 11 is a shock absorber used for a suspension device of a vehicle such as an automobile or a railway vehicle. Specifically, the cylinder device 11 is a shock absorber used for a strut suspension of the automobile.
- the cylinder device 11 is provided as a working fluid between a cylindrical inner cylinder 12 in which a working liquid as a working fluid is sealed, and an inner cylinder 12 which is larger in diameter than the inner cylinder 12 and is provided on the outer peripheral side of the inner cylinder 12.
- a bottomed cylindrical outer cylinder 14 that forms a reservoir chamber 13 in which a working liquid and a working gas are enclosed.
- the inner cylinder 12 and the outer cylinder 14 constitute a double cylindrical cylinder 15.
- the outer cylinder 14 is an integrally molded product made of a single metal member.
- the cylindrical side wall 21, the bottom 22 that closes one end of the side wall 21 in the axial direction, and the bottom 22 of the side wall 21 are: And an opening 23 on the opposite side.
- the outer cylinder 14 has an opening 23 on one end side and a bottom 22 on the other end side.
- An opening 23 on one end side of the outer cylinder 14 is an opening 23 on one end side of the cylinder 15.
- the inner cylinder 12 is an integrally molded product made of a single metal member and has a cylindrical shape.
- the cylinder device 11 includes a disc-shaped base member 30 fitted to one end portion of the inner cylinder 12 in the axial direction, the other end portion of the inner cylinder 12 in the axial direction, and the axial direction of the side wall portion 21 of the outer cylinder 14. And an annular rod guide 31 (sliding contact member) fitted to the opening 23 side.
- the inner cylinder 12 is engaged with the bottom 22 of the outer cylinder 14 via the base member 30, and is engaged with the opening 23 side of the side wall 21 of the outer cylinder 14 via the rod guide 31. In this state, the inner cylinder 12 is positioned in the radial direction with respect to the outer cylinder 14.
- the cylinder device 11 has an annular seal member 33 (sliding contact member) on the side opposite to the bottom 22 of the rod guide 31. Similarly to the rod guide 31, the seal member 33 is also fitted to the inner peripheral portion of the side wall portion 21 on the opening 23 side. A caulking portion 34 that is plastically deformed radially inward by curling is formed at an end opposite to the bottom portion 22 of the side wall portion 21, and the sealing member 33 includes the caulking portion 34 and a rod. It is sandwiched between the guide 31.
- the seal member 33 seals the opening 23 side of the outer cylinder 14, that is, the opening 23 side of the cylinder 15.
- the cylinder device 11 has a piston 35 provided in the cylinder 15.
- the piston 35 is slidably fitted to the inner cylinder 12 of the cylinder 15.
- the piston 35 slides in the inner cylinder 12 of the cylinder 15 and divides the inner cylinder 12 into two chambers, a first chamber 38 and a second chamber 39.
- the first chamber 38 is provided between the piston 35 in the inner cylinder 12 and the rod guide 31, and the second chamber 39 is provided between the piston 35 in the inner cylinder 12 and the base member 30.
- the second chamber 39 in the inner cylinder 12 is defined as the reservoir chamber 13 by a base member 30 provided on one end side of the inner cylinder 12.
- the first chamber 38 and the second chamber 39 are filled with an oil liquid that is a working liquid, and the reservoir chamber 13 is filled with a gas that is a working gas and an oil liquid that is a working liquid.
- the cylinder device 11 has a rod 41 having one end coupled to the piston 35 in the cylinder 15 and the other end projecting from the opening 23 of the cylinder 15.
- the rod 41 includes an axially main shaft portion 42 (first member), an axially attached attachment shaft portion 43 (second member), and an axially other end connecting shaft portion 44 (second member). And have.
- the attachment shaft portion 43 protrudes outward in the axial direction from one axial end of the main shaft portion 42
- the connecting shaft portion 44 protrudes outward in the axial direction from the other axial end of the main shaft portion 42.
- the rod 41 is attached to the vehicle body side at the attachment shaft portion 43, and the outer cylinder 14 of the cylinder 15 is attached to the wheel side.
- the main shaft portion 42 has a main outer peripheral portion 51 whose outer peripheral surface is cylindrical.
- the outer peripheral portion of the main shaft portion 42 is mainly composed of the main outer peripheral portion 51, and a tapered portion 52 whose outer peripheral surface is a tapered surface is formed at the end portion on the connecting shaft portion 44 side in the axial direction.
- the main shaft portion 42 has an end surface with one end portion 53 at the end portion on the side of the mounting shaft portion 43 in the axial direction extending in the direction orthogonal to the axis, and the other end portion being the end portion on the connecting shaft portion 44 side in the axial direction. 55 has an end surface extending in the direction perpendicular to the axis.
- a male screw 57 is formed on the outer periphery of the mounting shaft 43.
- the attachment shaft portion 43 has a flat tip surface in which a tip portion 59 which is an end portion on the opposite side of the main shaft portion 42 in the axial direction extends in the direction perpendicular to the axis.
- the outer peripheral portion on the main shaft portion 42 side in the axial direction is a fitting outer peripheral portion 62 whose outer peripheral surface is a cylindrical surface having a constant diameter, and is opposite to the main shaft portion 42 in the axial direction.
- the outer periphery of each is a male screw 65.
- the connection shaft portion 44 has a flat front end surface in which a front end portion 68 that is an end portion on the opposite side to the main shaft portion 42 in the axial direction extends in the direction perpendicular to the axis.
- the above-described piston 35 is connected to the rod 41 by a nut 71. That is, the piston 35 is fitted to the fitting outer peripheral portion 62 of the connecting shaft portion 44 of the rod 41, and the nut 71 is screwed to the male screw 65 of the connecting shaft portion 44, whereby the piston 35 is attached to the rod 41. Yes.
- the rod 41 extends from the cylinder 15 to the outside through a rod guide 31 and a seal member 33 provided on the opening 23 side of the cylinder 15.
- the main shaft portion 42 is in sliding contact with the rod guide 31 and the seal member 33 at the main outer peripheral portion 51.
- the rod guide 31 and the seal member 33 provided in the opening 23 of the cylinder 15 are in sliding contact with the main outer peripheral portion 51 of the rod 41.
- the mounting shaft portion 43 of the rod 41 does not slidably contact the rod guide 31 and does not slidably contact the seal member 33.
- the connecting shaft portion 44 of the rod 41 is also not in sliding contact with the rod guide 31 and is not in sliding contact with the seal member 33.
- the rod 41 is guided by the rod guide 31 and moves in the axial direction integrally with the piston 35 with respect to the cylinder 15.
- the seal member 33 closes the space between the outer cylinder 14 and the rod 41 and restricts the working liquid in the inner cylinder 12 and the working gas and working liquid in the reservoir chamber 13 from leaking to the outside. Therefore, the seal member 33 is provided in the opening 23 of the cylinder 15 and seals the working fluid sealed in the cylinder 15.
- the base member 30 is formed with a passage 82 and a passage 83 penetrating in the axial direction.
- the passages 82 and 83 can communicate the second chamber 39 and the reservoir chamber 13.
- the cylinder device 11 includes an annular disk valve 85 that can close the passage 82 by contacting the base member 30 on the bottom 22 side in the axial direction of the base member 30.
- an annular disk valve 86 is provided that can close the passage 83 by contacting the base member 30.
- the disc valve 85 opens the passage 82 when the rod 41 moves to the contraction side and the piston 35 moves in the direction of narrowing the second chamber 39 and the pressure in the second chamber 39 becomes higher than the pressure in the reservoir chamber 13 by a predetermined value or more. In this case, a damping force is generated.
- the disc valve 86 opens the passage 83 when the rod 41 moves to the extension side, the piston 35 moves to the first chamber 38 side, and the pressure in the second chamber 39 drops below the pressure in the reservoir chamber 13. In this case, the suction valve flows the working liquid from the reservoir chamber 13 into the second chamber 39 without substantially generating a damping force.
- the main shaft portion 42 shown in FIG. 1 is formed by a main shaft portion forming member 42A (first member) shown in FIG. 2, and the mounting shaft portion 43 shown in FIG. 1 is attached to the mounting shaft portion shown in FIG.
- the connecting shaft portion 44 shown in FIG. 1 is formed by the connecting shaft portion forming member 44A (second member) shown in FIG.
- the main shaft portion forming member 42A, the mounting shaft portion forming member 43A, and the connecting shaft portion forming member 44A are separate parts, and these are integrated by welding joining by friction generated by pressure welding.
- both the mounting shaft portion forming member 43A and the connecting shaft portion forming member 44A are integrated with the main shaft portion forming member 42A by welding by friction is shown.
- the technique of this embodiment may be applied to only one of the shaft portion forming members 44A.
- the main shaft portion forming member 42A is a cylindrical tube and is hollow over the entire length in the axial direction.
- the main shaft portion forming member 42A is joined to the attachment shaft portion forming member 43A at one end portion in the axial direction of the inner peripheral portion.
- One end portion of the main shaft portion forming member 42A on the side to which the mounting shaft portion forming member 43A in the axial direction of the inner peripheral portion is joined is a conical hole portion 101 (conical hole portion).
- the one-end conical hole-shaped portion 101 has a tapered inner peripheral surface whose diameter increases toward the outer side in the axial direction.
- the main shaft portion forming member 42A is joined to the connecting shaft portion forming member 44A at the other axial end portion of the inner peripheral portion.
- the other end portion of the main shaft portion forming member 42A on the side to which the connecting shaft portion forming member 44A in the axial direction of the inner peripheral portion is joined is the other end conical hole portion 103 (conical hole portion).
- the other end conical hole portion 103 has a tapered inner peripheral surface whose diameter increases toward the outer side in the axial direction.
- the angle ⁇ of the other end conical hole portion 103 with respect to the central axis of the main shaft forming member 42A is 3 ° or more and 8 ° or less.
- the main shaft portion forming member 42A is an intermediate hole portion 105 having a cylindrical inner peripheral surface having a constant diameter between the one end conical hole portion 101 and the other end conical hole portion 103. Further, the main shaft forming member 42A has a flat end surface in which one end 53A at one end in the axial direction extends in the direction orthogonal to the axis, and the other end 55A at the other end in the axial direction extends in the direction orthogonal to the axis. It has a flat end face. Further, in the main shaft portion forming member 42A, a main outer peripheral portion 51A that is an outer peripheral portion has a cylindrical outer peripheral surface having a constant diameter.
- the attachment shaft portion forming member 43A is a columnar member and is solid over the entire length in the axial direction.
- the mounting shaft portion forming member 43A has a conical outer peripheral portion 111 at the outer peripheral portion at one end on the side joined to the main shaft portion forming member 42A in the axial direction.
- the conical outer peripheral portion 111 has a tapered outer peripheral surface having a smaller diameter toward the outer side in the axial direction.
- An angle ⁇ of the conical outer peripheral portion 111 with respect to the central axis of the attachment shaft portion forming member 43A is 3 ° or more and 8 ° or less.
- the mounting shaft portion forming member 43A is a columnar outer peripheral portion 57A having an outer peripheral portion other than the conical outer peripheral portion 111 having a cylindrical outer peripheral surface having a constant diameter.
- the attachment shaft portion forming member 43A has a flat end surface in which the end portion 115 of the conical outer peripheral portion 111 opposite to the cylindrical outer peripheral portion 57A extends in the direction perpendicular to the axis.
- An end portion 59A opposite to the conical outer peripheral portion 111 has a flat end surface that extends in the direction perpendicular to the axis.
- the attachment shaft portion forming member 43A has a maximum outer diameter d3 of the conical outer peripheral portion 111, that is, an outer diameter d3 of the columnar outer peripheral portion 57A, and an outer diameter d5 of the main shaft portion forming member 42A, that is, outside the main outer peripheral portion 51A.
- the diameter is smaller than the diameter d5.
- the mounting shaft portion forming member 43A is smaller than the cylindrical outer peripheral portion 57A having an outer diameter size d3 smaller than the outer diameter size d5 of the main shaft portion forming member 42A and the outer diameter size d5 of the main shaft portion forming member 42A.
- a conical outer peripheral portion 111 having an outer diameter of not less than d1 and not more than d3.
- the mounting shaft portion forming member 43A is the male screw 57 of the mounting shaft portion 43 that is not slidably contacted with the rod guide 31 and the seal member 33 in the rod 41 shown in FIG. Therefore, the attachment shaft portion forming member 43 ⁇ / b> A becomes a portion that does not slide in contact with the rod guide 31 and the seal member 33 in the rod 41 later. Further, the end portion 59A of the attachment shaft portion forming member 43A is machined later to become the tip portion 59 of the attachment shaft portion 43 in the rod 41.
- the angle ⁇ of the conical outer peripheral portion 111 with respect to the central axis of the mounting shaft portion forming member 43A is equal to the angle ⁇ of the one end conical hole-shaped portion 101 with respect to the central axis of the main shaft portion forming member 42A.
- the length of 111 in the axial direction is equal to the length of the conical hole-shaped portion 101 in the axial direction.
- the maximum outer diameter d3 of the conical outer peripheral portion 111 is larger than the maximum inner diameter d2 of the one-end conical hole-shaped portion 101 by a predetermined amount.
- the connecting shaft portion forming member 44A has a columnar outer peripheral portion 62A having a cylindrical outer peripheral surface having a constant diameter at the outer peripheral portion other than the conical outer peripheral portion 121. Further, the connecting shaft portion forming member 44A has a flat end surface in which the end portion 125 of the conical outer peripheral portion 121 opposite to the cylindrical outer peripheral portion 62A extends in the direction perpendicular to the axis. The end 68A opposite to the conical outer periphery 121 has a flat end surface that extends in the direction perpendicular to the axis.
- the minimum outer diameter d6 of the conical outer periphery 121 is smaller than the maximum inner diameter d7 of the other end conical hole portion 103 of the main shaft forming member 42A. Thereby, the conical outer periphery 121 can enter the other end conical hole 103.
- the connecting shaft portion forming member 44A has a maximum outer diameter d8 of the conical outer peripheral portion 121, that is, an outer diameter d8 of the columnar outer peripheral portion 62A, which is the minimum inner diameter d4 of the other end conical hole portion 103 of the main shaft forming member 42A. That is, the diameter is larger than the inner diameter d4 of the intermediate hole portion 105. Accordingly, when the conical outer peripheral portion 121 enters the other end conical hole-like portion 103, the conical outer peripheral portion 121 abuts on the other end conical hole-like portion 103 and further entry is restricted.
- the connecting shaft portion forming member 44A has a maximum outer diameter d8 of the conical outer peripheral portion 121, that is, an outer diameter d8 of the columnar outer peripheral portion 62A, and an outer diameter d5 of the main shaft portion forming member 42A, that is, an outer side of the main outer peripheral portion 51A.
- the diameter is smaller than the diameter d5.
- the connecting shaft portion forming member 44A is smaller than the cylindrical outer peripheral portion 62A having an outer diameter size d8 smaller than the outer diameter size d5 of the main shaft portion forming member 42A and the outer diameter size d5 of the main shaft portion forming member 42A.
- a conical outer peripheral portion 121 having an outer diameter of d6 or more and d8 or less.
- the connecting shaft portion forming member 44A a cylindrical outer peripheral portion 62A is machined later, and the fitting outer peripheral portion 62 and the male screw of the connecting shaft portion 44 that do not slide in contact with the rod guide 31 and the seal member 33 in the rod 41 shown in FIG. 65. Therefore, the connecting shaft portion forming member 44 ⁇ / b> A becomes a portion that will not come into sliding contact with the rod guide 31 and the seal member 33 in the rod 41 later. Further, the end portion 68A of the connecting shaft portion forming member 44A is machined later to become the tip portion 68 of the connecting shaft portion 44 in the rod 41.
- the angle ⁇ of the conical outer peripheral portion 121 with respect to the central axis of the connecting shaft portion forming member 44A is equal to the angle ⁇ of the other end conical hole-shaped portion 103 with respect to the central axis of the main shaft portion forming member 42A.
- the length of the part 121 in the axial direction is equal to the length of the other end conical hole-like part 103 in the axial direction.
- the maximum outer diameter d8 of the conical outer peripheral portion 121 is larger by a predetermined amount than the maximum inner diameter d7 of the other end conical hole-shaped portion 103.
- the conical outer periphery portion 121 when the connecting shaft portion forming member 44A is inserted into the main shaft portion forming member 42A until the conical outer periphery portion 121 hits the other end conical hole portion 103 and stops, the conical outer periphery portion 121 has a predetermined amount (for example, 1 mm), The dimensional relationship is set so as to protrude outward from the other end 55A.
- the manufacturing method of the rod 41 of the present embodiment includes a preparation step S1 shown in FIG. 3 in which the main shaft portion forming member 42A, the mounting shaft portion forming member 43A, and the connecting shaft portion forming member 44A are prepared.
- the main shaft forming member 42A is fixed to the friction welding machine, and the friction welding machine rotates the mounting shaft forming member 43A as shown in FIG.
- An attachment shaft portion forming member approach step S2 shown in FIG. 3 is performed in which the inner peripheral surface of the conical hole-shaped portion 101 at one end of the main shaft portion forming member 42A and the outer peripheral surface of the conical outer periphery portion 111 of the attachment shaft portion forming member 43A are approached.
- the method of rotating the mounting shaft portion forming member 43A and causing the mounting shaft portion forming member 43A to approach the main shaft portion forming member 42A has been described, but the main shaft portion forming member 42A is rotated to rotate the main shaft portion forming member. You may make it 42A approach the attachment shaft part formation member 43A.
- the mounting shaft portion forming member approaching step S2 performed by the friction welding machine, as shown in FIG. 5, the inner peripheral surface and the mounting shaft portion of the one end conical hole portion 101 of the main shaft portion forming member 42A.
- the main shaft forming member 42A and the mounting shaft forming member 43A are relatively axially maintained while maintaining the rotation state of the mounting shaft forming member 43A.
- the main shaft portion forming member 42A and the mounting shaft portion forming member 43A are pressed into contact with each other, and the main shaft portion forming member 42A and the mounting shaft portion forming member 43A are joined by welding joining due to frictional heat generated at that time.
- the attachment shaft portion coupling step S3 shown in FIG. 3 is performed.
- the friction welding machine pushes the mounting shaft portion forming member 43A into the fixed main shaft portion forming member 42A while rotating it.
- the conical outer peripheral portion 111 comes into contact with the conical hole-shaped portion 101 at one end, the conical outer peripheral portion 111 protrudes outward from the one end portion 53A by a predetermined amount (for example, 1 mm).
- the attachment shaft portion forming member 43A is pushed into the main shaft portion forming member 42A in the axial direction by the amount of the pushing amount, with the predetermined amount as the pushing amount.
- the rotation of the mounting shaft portion forming member 43A is stopped and the state is maintained for a certain time.
- the welded portion 131 is formed between the inner peripheral portion of the main shaft forming member 42A and the outer peripheral portion of the mounting shaft forming member 43A.
- the welded portion 131 has a shape that substantially follows the shapes of the one-end conical hole-shaped portion 101 and the conical outer peripheral portion 111 shown in FIG. 5, and has a cylindrical shape that expands toward the one-end portion 53A side of the main shaft portion forming member 42A.
- the welded portion 131 includes a burr 132 that protrudes outward in the axial direction from one end portion 53A of the main shaft portion forming member 42A and protrudes radially outward from the cylindrical outer peripheral portion 57A of the mounting shaft portion forming member 43A.
- the connecting shaft portion forming member approach shown in FIG. 3 is brought close to the inner peripheral surface of the other end conical hole portion 103 of the main shaft forming member 42A and the outer peripheral surface of the conical outer periphery portion 121 of the connecting shaft forming member 44A. Step S4 is performed.
- the connecting shaft forming member approaching step S4 performed by the friction welding machine is used to connect the inner peripheral surface of the other end conical hole portion 103 of the main shaft forming member 42A and the connecting shaft as shown in FIG. After the outer peripheral surface of the conical outer peripheral portion 121 of the portion forming member 44A comes into contact, the main shaft forming member 42A and the connecting shaft portion forming member 44A are relatively pivoted while maintaining the rotation state of the connecting shaft portion forming member 44A.
- the main shaft portion forming member 42A and the connecting shaft portion forming member 44A are pressed against each other by a predetermined amount in the direction, and the main shaft portion forming member 42A and the connecting shaft portion forming member 44A are joined by welding joining due to frictional heat generated at that time.
- the connecting shaft portion combining step S5 shown in FIG. 3 is performed.
- the friction welding machine pushes the connecting shaft portion forming member 44A into the fixed main shaft portion forming member 42A while rotating it.
- a predetermined amount for example, 1 mm.
- the predetermined amount is set as the pushing amount, and the connecting shaft portion forming member 44A is pushed into the main shaft portion forming member 42A in the axial direction by the pushing amount.
- the rotation of the connecting shaft portion forming member 44A is stopped and the state is maintained for a certain time.
- the inner peripheral part of the other end conical hole part 103 of the main shaft part forming member 42A and the outer peripheral part of the conical outer part 121 of the connecting shaft part forming member 44A are solidified after softening and stirring the material by frictional heat. They are integrated into a welded portion 133 as shown in FIG.
- the welded portion 133 is formed between the inner peripheral portion of the main shaft portion forming member 42A and the outer peripheral portion of the connecting shaft portion forming member 44A.
- the welded portion 133 has a shape that substantially follows the shapes of the other end conical hole portion 103 and the conical outer peripheral portion 121 shown in FIG. 8, and has a cylindrical shape that expands toward the other end portion 55A side of the main shaft portion forming member 42A. .
- the welded portion 133 includes a burr 134 that protrudes outward in the axial direction from the other end 55A of the main shaft portion forming member 42A and protrudes radially outward from the cylindrical outer peripheral portion 62A of the connecting shaft portion forming member 44A.
- a machining step S6 is performed after the connecting shaft portion coupling step S5.
- the end portion 59A of the attachment shaft portion forming member 43A shown in FIG. 6 is machined to perform a one-side tip portion forming step for forming the tip portion 59 of the attachment shaft portion 43 shown in FIG.
- the one end portion forming step of forming the one end portion 53 of the main shaft portion 42 shown in FIG. 10 is performed by machining the one end portion 53A of the main shaft portion forming member 42A shown in FIG.
- the male outer periphery 57A of the attachment shaft portion forming member 43A shown in FIG. 6 is machined to perform the male screw formation step of forming the male screw 57 of the attachment shaft portion 43 shown in FIG.
- the metal melted between the one end portion 53A of the main shaft portion forming member 42A and the columnar outer peripheral portion 57A of the mounting shaft portion forming member 43A is exposed to the outside. Even if the burrs 132 are generated by protruding and solidifying, the burrs 132 are removed by cutting as shown in FIG. 10 by the above-described main shaft one end forming step and male screw forming step of the machining step S6. can do.
- the mounting shaft portion forming member 43A is threaded on the portion other than the welded portion 131 with the main shaft portion forming member 42A, and the burr 132 of the welded portion 131 is removed at that time.
- the male screw forming step the base portion of the male screw 57 may be formed by cutting, and the male screw 57 may be formed by rolling. In that case, the burr 132 is removed when the base portion of the male screw 57 is cut.
- the other end portion 55A of the main shaft portion forming member 42A shown in FIG. 9 is machined to form the tapered portion 52 and the other end portion 55 of the main shaft portion 42 shown in FIG. An edge part formation process is performed.
- the columnar outer peripheral portion 62A of the connecting shaft portion forming member 44A shown in FIG. 9 is machined to form the fitting outer peripheral portion 62 and the male screw 65 of the connecting shaft portion 44 shown in FIG. A process for forming male screws and the like is performed.
- the molten metal between the other end portion 55A of the main shaft portion forming member 42A and the cylindrical outer peripheral portion 62A of the connecting shaft portion forming member 44A is outside. Even if the burr 134 is generated by projecting and solidifying, the burr 134 is cut as shown in FIG. 11 by the above-mentioned main shaft portion other end forming step and male screw forming step in the machining step S6. And can be removed.
- the connecting shaft portion forming member 44A is threaded on a portion other than the welded portion 133 with the main shaft portion forming member 42A, and the burr 134 of the welded portion 133 is removed at that time.
- the connecting shaft portion forming member 44A is threaded on a portion other than the welded portion 133 with the main shaft portion forming member 42A, and the burr 134 of the welded portion 133 is removed at that time.
- the male screw etc. forming step the base portion of the fitting outer peripheral portion 62 and the male screw 65 may be formed by cutting, and the male screw 65 may be formed by rolling. In that case, the burr 134 is removed when the base portion of the fitting outer peripheral portion 62 and the male screw 65 is cut.
- the rod 41 manufactured by the manufacturing method of the present embodiment described above includes a main shaft portion 42 that is in sliding contact with the rod guide 31 and the seal member 33, and the rod guide 31 and the seal member 33 are both slidable. It has the attachment shaft part 43 and the connection shaft part 44 which do not contact.
- the portion where the mounting shaft portion 43 and the connecting shaft portion 44 are inserted is solid, and the other portions are hollow. Both the attachment shaft portion 43 and the connection shaft portion 44 are solid.
- the outer diameter of both the mounting shaft 43 and the connecting shaft 44 is smaller than the outer diameter of the main shaft 42 over the entire length.
- the rod 41 has the inner peripheral portion of the main shaft portion 42 and the outer peripheral portion of the mounting shaft portion 43 joined by welding by friction.
- a welded portion 131 formed at that time between the inner peripheral portion of the main shaft portion 42 and the outer peripheral portion of the mounting shaft portion 43 has a cylindrical shape whose diameter increases toward the one end portion 53 side of the main shaft portion 42.
- the rod 41 has an inner peripheral portion of the main shaft portion 42 and an outer peripheral portion of the connecting shaft portion 44 that are joined by welding by friction.
- the welded portion 133 formed at that time between the inner peripheral portion of the main shaft portion 42 and the outer peripheral portion of the connecting shaft portion 44 has a cylindrical shape whose diameter increases toward the other end portion 55 side of the main shaft portion 42. .
- Patent Document 1 described above describes a manufacturing method for manufacturing a rod by friction welding a cylindrical member and a mixing member having a cylindrical portion and a columnar portion.
- this manufacturing method while fixing the cylindrical member and rotating the mixing member, the end surface of the cylindrical member and the end surface of the cylindrical portion of the mixing member are brought into contact with each other, pressure is applied thereto, and the cylindrical member and The mixing member is joined. And the burr
- a dedicated process for cutting and removing burrs and a grinding process for polishing the entire outer periphery including the part after the burrs have been removed by cutting are performed before the machining process for making the rod into the final shape.
- a dedicated process for cutting and removing burrs and a grinding process for polishing the entire outer periphery including the part after the burrs have been removed by cutting are performed before the machining process for making the rod into the final shape.
- the rod 41 of the cylinder device 11 of the present embodiment includes a hollow main shaft portion 42 that is in sliding contact with the rod guide 31 and the seal member 33, and an attachment shaft portion 43 that is not in sliding contact with the rod guide 31 and the seal member 33. And a connecting shaft portion 44.
- the inner peripheral part of the main-shaft part 42, the outer peripheral part of the attachment shaft part 43, and the outer peripheral part of the connection shaft part 44 are joined by welding welding by friction.
- the outer diameter of the mounting shaft 43 and the connecting shaft 44 is smaller than the outer diameter of the main shaft 42.
- burrs 132 and 134 are generated by welding by friction, they can be generated at positions that do not reach the main outer peripheral portion 51 of the main shaft portion 42 that is in sliding contact with the rod guide 31 and the seal member 33. Therefore, it is not necessary to remove the burrs before the machining step S6 for making the rod 41 into the final shape. Therefore, the manufacture of the rod 41 of the cylinder device 11 can be facilitated, and the number of work steps can be reduced.
- the hollow main shaft forming member 42A which is a portion in sliding contact with the rod guide 31 and the seal member 33 in the rod 41, and the rod guide 31 and sealing member 33 in the rod 41 are not in sliding contact. It includes a preparation step S1 for preparing a mounting shaft portion forming member 43A and a connecting shaft portion forming member 44A that are portions and have a portion having an outer diameter smaller than the outer diameter of the main shaft forming member 42A. It is out.
- an attachment shaft forming member approach step S2 in which the inner peripheral surface of the main shaft portion forming member 42A and the outer peripheral surface of the attachment shaft portion forming member 43A are brought close to each other while rotating the attachment shaft portion forming member 43A, and the main shaft portion forming member 42A.
- the main shaft portion forming member 42A and the attachment shaft portion forming member 43A are pushed by a predetermined amount in the axial direction, and the main shaft portion forming member 42A and the attachment shaft portion
- An attachment shaft portion coupling step S3 for coupling the forming member 43A to the welding member by friction welding.
- the main shaft portion forming member 42A and the connecting shaft portion forming member 44A are pushed by a predetermined amount in the axial direction to A connecting shaft portion connecting step S5 for connecting the forming member 44A to the forming member 44A by welding by friction.
- the method for manufacturing the rod 41 includes a male thread forming process in which a portion of the mounting shaft forming member 43A other than the welded portion 131 with the main shaft forming member 42A is threaded and the burr 132 of the welded portion 131 is removed.
- the burr 132 can be removed by cutting together with the screw machining of the attachment shaft portion forming member 43A. Therefore, the burr 132 can be removed without performing a dedicated process.
- the manufacturing method of the rod 41 includes a male thread forming process in which a portion of the connecting shaft forming member 44A other than the welded portion 133 with the main shaft forming member 42A is threaded and the burr 134 of the welded portion 133 is removed. Therefore, the burr 134 can be removed by cutting along with the threading of the connecting shaft portion forming member 44A. Therefore, the burr 134 can be removed without performing a dedicated process. Therefore, equipment cost and work man-hours can be reduced.
- edge part of the inner peripheral part of 42 A of main shaft part formation members is the one end conical hole part 101 and the other end conical hole part 103, the inner peripheral part of 42 A of main shaft part formation members, and an attachment shaft part
- the forming member 43A and the outer peripheral portion of the connecting shaft part forming member 44A can be satisfactorily connected by welding by friction.
- the inner peripheral portion of the main shaft portion forming member 42A, the inner peripheral portion of the mounting shaft portion forming member 43A, and the inner peripheral portion of the connecting shaft portion forming member 44A are joined by welding by friction. Then, the welded parts 131 and 133 have a cylindrical shape that expands toward the end side of the main shaft part 42.
- the angle of the one end conical hole-shaped portion 101 and the other end conical hole-shaped portion 103 with respect to the axis of the main shaft forming member 42A is 3 ° or more and 8 ° or less.
- the inner peripheral portion of the main shaft portion forming member 42A and the outer peripheral portion of the mounting shaft portion forming member 43A can be further satisfactorily joined by welding welding by friction.
- the inner peripheral portion of the main shaft portion forming member 42A and the outer peripheral portion of the connecting shaft portion forming member 44A can be further satisfactorily joined by welding by friction.
- the angle is larger than 8 °, the workpiece becomes slippery and the motor of the friction welding machine is overloaded.
- the angle is larger than 8 °, the thickness on the end side of the main shaft portion forming member 42A is reduced, so that the main shaft portion 42 may be deformed.
- the connecting shaft portion forming member approach step S4 is performed after the attachment shaft portion coupling step S3.
- the connecting shaft portion forming member approaching step S4 and the connecting shaft portion connecting step S5 may be performed before the attaching shaft portion forming member approaching step S2 and the attaching shaft portion connecting step S3.
- the attachment shaft portion forming member approach step S2 and the attachment shaft portion coupling step S3, and the connecting shaft portion forming member approach step S4 and the connecting shaft portion joining step S5 may be performed in parallel.
- the attachment shaft portion forming member 43A may be fixed and the main shaft portion forming member 42A may be rotated, or both the main shaft portion forming member 42A and the attachment shaft portion forming member 43A may be rotated. That is, while rotating at least one of the main shaft portion forming member 42A and the mounting shaft portion forming member 43A, the inner peripheral surface of the one end conical hole-shaped portion 101 of the main shaft portion forming member 42A and the mounting shaft portion forming member 43A. What is necessary is just to make the outer peripheral surface of this conical outer peripheral part 111 approach, and press-contact.
- the connecting shaft portion forming member 44A may be fixed and the main shaft portion forming member 42A may be rotated, or both the main shaft portion forming member 42A and the connecting shaft portion forming member 44A may be rotated.
- the end of the inner peripheral portion of the main shaft portion forming member 42A is a conical hole portion 101 at one end and a conical hole portion 103 at the other end, and the main shaft portion forming member 42A of the mounting shaft forming member 43A.
- the end portion on the joining side of the attachment shaft portion forming member 43A may be cylindrical
- the end portion on the joining side of the connecting shaft portion forming member 44A may be cylindrical. That is, it is only necessary that the one end conical hole-shaped portion 101 and the other end conical hole-shaped portion 103 are formed at least at the end of the inner peripheral portion of the main shaft forming member 42A.
- the machining step S6 performed after the attachment shaft portion joining step S3 and the connecting shaft portion joining step S5 includes a male screw forming step for forming the male screw 57 of the attachment shaft portion 43, and the fitting of the connecting shaft portion 44.
- the case where the forming process of forming the external threads 62 and the external threads 65 is performed has been described as an example.
- the male screw 57 of the mounting shaft portion 43 is formed in advance on the mounting shaft portion forming member 43A, and the fitting outer peripheral portion 62 and the male screw 65 of the connecting shaft portion 44 are formed in advance on the connecting shaft portion forming member 44A. You can leave it.
- the attachment shaft portion forming member approach step S2 and the attachment shaft portion coupling step S3 may be performed, and the connection shaft portion forming member approach step S4 and the connection shaft portion joining step S5 may be performed. That is, before the step of joining the main shaft portion forming member 42A and the mounting shaft portion forming member 43A, a step of threading the mounting shaft portion 43 of the mounting shaft portion forming member 43A in advance may be included. Further, before the step of joining the main shaft portion forming member 42A and the connecting shaft portion forming member 44A, a step of threading the connecting shaft portion 44 of the connecting shaft portion forming member 44A in advance may be included.
- burrs 132 and 134 are generated by welding by friction, they can be generated at positions that do not reach the main outer peripheral portion 51 of the main shaft portion 42 that is in sliding contact with the rod guide 31 and the seal member 33.
- the machining step S6 which is a subsequent step of the attachment shaft portion coupling step S3 and the connecting shaft portion coupling step S5.
- the mounting shaft portion 43 and the connecting shaft portion 44 have a smaller overall outer diameter than the outer diameter of the main shaft portion 42, but the main shaft portion 42 that protrudes from the main shaft portion 42.
- the outer diameter dimension of only the end portion on the side may be smaller than the outer diameter dimension of the main shaft portion 42.
- the mounting shaft portion 43 and the connecting shaft portion 44 have at least the outer diameter dimension of the end portion on the main shaft section 42 side that protrudes from the main shaft section 42 is smaller than the outer diameter dimension of the main shaft section 42. good. For example, as shown in FIG.
- the attachment shaft portion 43 has a small diameter at the end on the main shaft portion 42 side of the portion protruding from the main shaft portion 42 at a position away from the main shaft portion 42 in the axial direction.
- the outer diameter may be larger than that of the portion 141 and may have a larger diameter portion 142 equal to or larger than the outer diameter of the main shaft portion 42.
- the attachment shaft portion 43 has an axial space 143 between the large diameter portion 142 and the main shaft portion 42. The same applies to the connecting shaft portion 44.
- the main shaft portion 42 has an overall outer diameter dimension larger than that of the mounting shaft portion 43 and the connecting shaft portion 44, but is in sliding contact with the rod guide 31 and the seal member 33. About the part which does not carry out, it is good also as a small diameter with respect to the part which slides. That is, the main shaft portion 42 is a main shaft portion of a portion in which the outer diameter of the portion that comes into sliding contact with the rod guide 31 and the seal member 33 at the time of assembly projects from the main shaft portion 42 of the mounting shaft portion 43 and the connecting shaft portion 44. What is necessary is just to be larger than the outer diameter dimension of the end part on the 42 side.
- the outer diameter dimension of at least the end portion on the mounting shaft portion 43 side is the main shaft portion 42 of the mounting shaft portion 43.
- the diameter is larger than the outer diameter of the end portion of the portion protruding from the main shaft portion 42 side.
- the main shaft portion 42 has the outer peripheral portion of the connecting shaft portion 44 joined to the inner peripheral portion thereof by welding by friction, the outer diameter of at least the end portion on the connecting shaft portion 44 side is the main shaft portion 42 of the connecting shaft portion 44.
- the diameter is larger than the outer diameter of the end portion of the portion protruding from the main shaft portion 42 side.
- the case where the main shaft forming member 42A is hollow over the entire length in the axial direction has been described as an example.
- it is sufficient that at least the portion where the attachment shaft portion forming member 43A and the connecting shaft portion forming member 44A are joined is hollow.
- the cylinder device 11 in which the cylinder 15 has the opening 23 only on one end side has been described as an example.
- the present invention can also be applied to a cylinder device in which the cylinder 15 has openings on both ends. That is, the present invention can be applied to a cylinder device having a cylindrical cylinder having an opening on at least one end side.
- the first aspect of the embodiment described above includes a cylindrical cylinder having an opening on at least one end side, a piston that slides in the cylinder and divides the cylinder into two chambers, and one end portion.
- a rod that is coupled to the piston in the cylinder, the other end of which protrudes from the opening of the cylinder, and a sliding contact member that is provided in the opening of the cylinder and that is in sliding contact with the rod.
- first member that is a hollow cylindrical member that is in sliding contact with the sliding contact member, and a second member that is not in sliding contact with the sliding contact member, and the outer diameter of the first member is The outer diameter of at least the first member side end of the second member is a small diameter, and the inner peripheral portion of the first member and the outer peripheral portion of the second member are joined by welding welding by friction. Yes. Thereby, manufacture of the cylinder apparatus containing a rod, ie, a rod, can be facilitated.
- the welded portion between the inner peripheral portion of the first member and the outer peripheral portion of the second member has a cylindrical shape that expands toward the end side of the first member. ing.
- the third aspect has a space between the first member and the second member in the first or second aspect.
- a piston that divides the inside of a cylindrical cylinder having an opening on at least one end side into two chambers and one end are combined, and the other is passed through a sliding contact member provided in the opening of the cylinder.
- a step of preparing a second member formed with a portion having an outer diameter smaller than the outer diameter of one member, and rotating at least one of the first member and the second member The first member and the outer peripheral surface of the second member are brought close to each other, and the inner peripheral surface of the first member and the outer peripheral surface of the second member come into contact with each other.
- the fifth aspect includes a step of performing threading on a portion of the second member other than the welded portion with the first member and removing burrs of the welded portion in the fourth aspect.
- the sixth aspect includes a step of threading the second member before the step of joining the first member and the second member in the fourth aspect.
- At least the edge part of the internal peripheral part of the said 1st member is a conical hole-shaped part in the 4th thru
- the angle with respect to the axis line of the said 1st member of the said conical hole-shaped part is 7 degrees or more and 8 degrees or less in the 7th aspect.
- the manufacture of the cylinder device can be facilitated.
- Cylinder device 15 Cylinder 23 Opening 31 Rod guide (sliding contact member) 33 Seal member (sliding contact member) 35 Piston 38 First chamber 39 Second chamber 41 Rod 42 Main shaft portion (first member) 42A Main shaft forming member (first member) 43 Mounting shaft (second member) 43A Mounting shaft forming member (second member) 44 Connecting shaft (second member) 44A Connecting shaft portion forming member (second member) 101 conical hole portion at one end 103 conical hole portion at the other end 131, 133 welded portion 143 space
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Fluid-Damping Devices (AREA)
- Vehicle Body Suspensions (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
Description
本願は、2018年3月28日に日本に出願された特願2018-062474号について優先権を主張し、その内容をここに援用する。
15 シリンダ
23 開口部
31 ロッドガイド(摺接部材)
33 シール部材(摺接部材)
35 ピストン
38 第1室
39 第2室
41 ロッド
42 主軸部(第1部材)
42A 主軸部形成部材(第1部材)
43 取付軸部(第2部材)
43A 取付軸部形成部材(第2部材)
44 連結軸部(第2部材)
44A 連結軸部形成部材(第2部材)
101 一端円錐孔状部
103 他端円錐孔状部
131,133 溶接部
143 空間
Claims (8)
- 少なくとも一端側に開口部を有する筒状のシリンダと、
前記シリンダ内を摺動するとともに該シリンダ内を2室に分けるピストンと、
一方の端部が前記シリンダ内で前記ピストンと結合され、他方の端部が前記シリンダの開口部から突出するロッドと、
前記シリンダの開口部に設けられ前記ロッドと摺接する摺接部材と、
を備え、
前記ロッドは、
前記摺接部材と摺接する中空の円筒状部材である第1部材と、
前記摺接部材とは摺接しない第2部材と、
を有し、
前記第1部材の外径寸法に対し前記第2部材の少なくとも前記第1部材側の端部の外径寸法が小径になっており、
前記第1部材の内周部と前記第2部材の外周部とが摩擦による溶接接合で接合されていることを特徴とするシリンダ装置。 - 前記第1部材の内周部と前記第2部材の外周部との溶接部は、前記第1部材の端部側に向かって拡がる筒状をなしていることを特徴とする請求項1に記載のシリンダ装置。
- 前記第1部材と前記第2部材との間に空間を有することを特徴とする請求項1または2に記載のシリンダ装置。
- 少なくとも一端側に開口部を有する筒状のシリンダ内を2室に分けるピストンと一方の端部が結合され、前記シリンダの開口部に設けられる摺接部材を通って他方の端部が突出するロッドの製造方法であって、
前記ロッドにおける前記摺接部材に摺接する部位となる中空の第1部材と、前記ロッドにおける前記摺接部材とは摺接しない部位となり、前記第1部材の外径寸法よりも小さい外径寸法の部分を有して形成される第2部材と、を準備する工程と、
前記第1部材および前記第2部材のうちの少なくともいずれか一方を回転させながら前記第1部材の内周面と前記第2部材の外周面とを接近させる工程と、
前記第1部材の内周面と前記第2部材の外周面とが接触した後、前記第1部材および前記第2部材を軸方向に所定量押し込んで、前記第1部材と前記第2部材とを摩擦による溶接接合により結合する工程と、
を含むロッドの製造方法。 - 前記第2部材における前記第1部材との溶接部以外の部分にネジ加工を施すとともに前記溶接部のバリを除去する工程を含むことを特徴とする請求項4に記載のロッドの製造方法。
- 前記第1部材と前記第2部材とを結合する工程の前に、前記第2部材にネジ加工を施す工程を含むことを特徴とする請求項4に記載のロッドの製造方法。
- 少なくとも前記第1部材の内周部の端部は円錐孔状部となっていることを特徴とする請求項4乃至6のいずれか一項に記載のロッドの製造方法。
- 前記円錐孔状部の前記第1部材の軸線に対する角度は、3°以上、8°以下となっていることを特徴とする請求項7に記載のロッドの製造方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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CN201880090813.0A CN111886422B (zh) | 2018-03-28 | 2018-09-20 | 缸体装置以及杆的制造方法 |
JP2020508960A JP6971382B2 (ja) | 2018-03-28 | 2018-09-20 | ロッドの製造方法 |
US16/976,806 US11686365B2 (en) | 2018-03-28 | 2018-09-20 | Cylinder device and rod manufacturing method |
DE112018007369.6T DE112018007369T5 (de) | 2018-03-28 | 2018-09-20 | Zylindervorrichtung und Verfahren zum Herstellen einer Stange |
KR1020207025141A KR102482222B1 (ko) | 2018-03-28 | 2018-09-20 | 실린더 장치 및 로드의 제조 방법 |
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Application Number | Priority Date | Filing Date | Title |
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JP2018-062474 | 2018-03-28 | ||
JP2018062474 | 2018-03-28 |
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WO2019187220A1 true WO2019187220A1 (ja) | 2019-10-03 |
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PCT/JP2018/034745 WO2019187220A1 (ja) | 2018-03-28 | 2018-09-20 | シリンダ装置およびロッドの製造方法 |
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US (1) | US11686365B2 (ja) |
JP (1) | JP6971382B2 (ja) |
KR (1) | KR102482222B1 (ja) |
CN (1) | CN111886422B (ja) |
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WO (1) | WO2019187220A1 (ja) |
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WO2021059831A1 (ja) * | 2019-09-26 | 2021-04-01 | 日立Astemo株式会社 | ロッドの製造方法 |
KR20210097056A (ko) * | 2020-01-29 | 2021-08-06 | 대성코리아(주) | 쇽 업소버용 피스톤 로드 제조방법 |
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US11717911B1 (en) * | 2020-10-22 | 2023-08-08 | Paul Po Cheng | Method of fusing metal objects together |
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- 2018-09-20 DE DE112018007369.6T patent/DE112018007369T5/de active Pending
- 2018-09-20 US US16/976,806 patent/US11686365B2/en active Active
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JPS57127939U (ja) * | 1981-02-04 | 1982-08-10 | ||
JPS5836644U (ja) * | 1981-09-02 | 1983-03-10 | カヤバ工業株式会社 | ストラツト型シヨツクアブソ−バ |
JPS58175886U (ja) * | 1982-05-20 | 1983-11-24 | 株式会社昭和製作所 | 摩擦溶接における取付構造 |
JPS63256287A (ja) * | 1987-04-14 | 1988-10-24 | Hino Motors Ltd | ピストンの製造方法 |
JP2000161414A (ja) * | 1998-11-20 | 2000-06-16 | Unisia Jecs Corp | サスペンションストラット |
JP2010525255A (ja) * | 2007-04-16 | 2010-07-22 | テンネコ・オートモティブ・オペレーティング・カンパニー・インコーポレイテッド | 改良されたロッドアセンブリ溶接部 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021059831A1 (ja) * | 2019-09-26 | 2021-04-01 | 日立Astemo株式会社 | ロッドの製造方法 |
KR20210097056A (ko) * | 2020-01-29 | 2021-08-06 | 대성코리아(주) | 쇽 업소버용 피스톤 로드 제조방법 |
KR102417271B1 (ko) * | 2020-01-29 | 2022-07-06 | 대성코리아(주) | 쇽 업소버용 피스톤 로드 제조방법 |
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CN111886422B (zh) | 2022-09-02 |
CN111886422A (zh) | 2020-11-03 |
JP6971382B2 (ja) | 2021-11-24 |
KR102482222B1 (ko) | 2022-12-27 |
DE112018007369T5 (de) | 2020-12-10 |
US11686365B2 (en) | 2023-06-27 |
US20210003188A1 (en) | 2021-01-07 |
KR20200112973A (ko) | 2020-10-05 |
JPWO2019187220A1 (ja) | 2021-01-14 |
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