WO2021090492A1 - 液圧式クランプ装置及び液圧式クランプ装置の製造方法 - Google Patents

液圧式クランプ装置及び液圧式クランプ装置の製造方法 Download PDF

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Publication number
WO2021090492A1
WO2021090492A1 PCT/JP2019/043958 JP2019043958W WO2021090492A1 WO 2021090492 A1 WO2021090492 A1 WO 2021090492A1 JP 2019043958 W JP2019043958 W JP 2019043958W WO 2021090492 A1 WO2021090492 A1 WO 2021090492A1
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WIPO (PCT)
Prior art keywords
adhesive
peripheral surface
cylindrical member
clamp device
working liquid
Prior art date
Application number
PCT/JP2019/043958
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English (en)
French (fr)
Japanese (ja)
Inventor
佐藤　正樹
Original Assignee
黒田精工株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 黒田精工株式会社 filed Critical 黒田精工株式会社
Priority to CN201980100432.0A priority Critical patent/CN114502305B/zh
Priority to JP2021554547A priority patent/JP7438233B2/ja
Priority to PCT/JP2019/043958 priority patent/WO2021090492A1/ja
Publication of WO2021090492A1 publication Critical patent/WO2021090492A1/ja

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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
    • B23B31/40—Expansion mandrels

Definitions

  • the present invention relates to a hydraulic clamp device and a method for manufacturing a hydraulic clamp device.
  • a mandrel including a rod-shaped main body having a circular cross-sectional shape and a thin cylindrical member mounted on the outer peripheral surface of the main body, and a cylindrical working liquid chamber formed between the main body and the cylindrical member.
  • a type of hydraulic clamping device is known (for example, Patent Document 1).
  • the cylindrical member is expanded and deformed by pressurizing the working liquid sealed in the working liquid chamber, and the clamped member arranged on the outer periphery of the cylindrical member is clamped.
  • An object to be solved by the present invention is to improve the concentricity, cylindricity, and roundness of cylindrical members in a hydraulic clamping device so that more highly accurate clamping can be performed.
  • a first member having a circular first peripheral surface and a second peripheral surface fitted to the first peripheral surface are formed.
  • the working liquid chamber is defined by a recess provided in at least one of the first peripheral surface and the second peripheral surface, and is sealed in the working liquid chamber.
  • a hydraulic clamping device that clamps a member to be clamped by elastically deforming the second member in the radial direction due to the pressure of the working liquid, and is outside of both ends in the axial direction of the working liquid chamber.
  • An annular seal member provided between the first member and the second member at each position and forming a pair with the working liquid chamber sandwiched in the axial direction, and the first member.
  • the second member is provided between the first member and the second member at each position on the outer side of the pair of annular seal members in the axial direction. It has an adhesive layer that forms a pair with the working liquid chamber sandwiched in the axial direction.
  • At least one of the first peripheral surface and the second peripheral surface is provided on both sides of the working liquid chamber in the axial direction, and the working liquid chamber is axially aligned. It has a pair of adhesive grooves sandwiched in a direction, and the adhesive layer is formed by an adhesive filled in each of the paired adhesive grooves.
  • the thickness of the adhesive layer is reliably set with high uniformity by the depth of the adhesive groove.
  • one of the paired adhesive grooves is provided in the first member and the other is provided in the second member.
  • the first member has a diameter-expanded portion or a diameter-reduced portion that defines an end face facing the end face of the second member, and the pair of adhesives.
  • the adhesive groove on the enlarged diameter portion or the reduced diameter portion side of the groove is provided on the first member, and the adhesive on the opposite side of the enlarged diameter portion or the reduced diameter portion of the paired adhesive grooves.
  • the agent groove is provided in the second member.
  • each of the adhesive grooves includes a spiral groove.
  • the second member is reliably fixed to the first member in both the axial direction and the circumferential direction.
  • the adhesive groove has a triangular cross section defined by a slope and an upright surface, respectively.
  • the adhesive in the adhesive groove is less likely to overflow to the outside of the adhesive groove, and the adhesive is likely to remain in the adhesive groove.
  • the first member or the second member has a plurality of annular O-ring grooves formed on the first peripheral surface or the second peripheral surface.
  • Each of the sealing members includes an elastic O-ring fitted in the O-ring groove.
  • the liquid-tight seal of the working liquid chamber is performed by the O-ring, and the centering of the second member with respect to the first member is performed by the O-ring, so that the first member and the second member are connected to each other. Concentricity improves.
  • the seal member and the adhesive layer on the corresponding side are connected to each other.
  • Each of the positions in the axial direction between them has an adhesive blocking portion in which the gap between the first peripheral surface and the second peripheral surface is smaller than the gap in the other axial positions.
  • the adhesive is suppressed from adhering to the sealing member, and the liquidtight sealing performance of the working liquid chamber by the sealing member is stabilized.
  • the adhesive dammed portion includes a land portion formed on the first member due to an enlarged diameter.
  • the adhesive damming portion includes an elastic O-ring provided on the first member or the second member, respectively.
  • the O-ring prevents the adhesive of the adhesive layer from invading the arrangement portion of the sealing member.
  • the first member or the second member has a plurality of annular O-ring grooves formed on the first peripheral surface or the second peripheral surface.
  • Each of the sealing members includes an elastic O-ring fitted in the O-ring groove, and is located at an axial position between the sealing member and the adhesive layer.
  • the gap between the surface and the second peripheral surface has an adhesive blocking portion smaller than the gap at another axial position, and each of the adhesive blocking portions is the working liquid chamber of the O-ring groove.
  • the ring member suppresses the adhesive of the adhesive layer from invading the arrangement portion of the seal member, and the illegal deformation of the O-ring is suppressed.
  • the first member includes a land portion with an enlarged diameter at a position further axially away from the paired adhesive layer with respect to the working liquid chamber.
  • the clearance between the main body and the cylindrical member is optimally maintained over the entire circumference, and fluctuations in the thickness of the adhesive layer in the circumferential direction are suppressed.
  • the first member and the second member have higher elastic modulus and wear resistance than the first member. Etc., it is composed of different materials.
  • the performance of the second member can be specialized in high expansion resistance, wear resistance, etc., separately from the first member.
  • the first member is made of metal
  • the second member is made of fiber reinforced plastic having a higher elastic modulus than the metal constituting the first member. Has been done.
  • the performance of the second member can be specialized to have high expandability separately from the first member.
  • the first member includes a rod-shaped portion
  • the first peripheral surface is an outer peripheral surface of the rod-shaped portion
  • the second member includes a cylindrical portion.
  • the second peripheral surface is the inner peripheral surface of the cylindrical portion, and the cylindrical portion expands and deforms due to the pressure of the working liquid to clamp the clamped member on the outer peripheral surface of the cylindrical body.
  • the first member includes a first outward flange portion
  • the second member is a second outer facing the first outward flange portion. It includes an facing flange portion and has an additional adhesive layer between the facing surfaces of the first outward flange portion and the second outward flange portion.
  • the adhesive strength of the second member to the first member is improved.
  • the first member includes an opening extending in the axial direction, the first peripheral surface is an inner peripheral surface of the opening, and the second member. Including the cylindrical portion, the second peripheral surface is the outer peripheral surface of the cylindrical portion, and the clamped member is on the inner peripheral surface of the cylindrical body due to the diameter reduction deformation of the cylindrical portion due to the pressure of the working liquid. Clamp.
  • a piston chamber formed in the first member and communicating with the working liquid chamber and a piston chamber formed in the first member and communicating with the piston chamber are further preferable.
  • the piston has a screw hole, a piston movably provided in the piston chamber, and an operating screw member screw-engaged with the screw hole, and the piston moves in the piston chamber by screwing the operating screw member.
  • the working liquid in the working liquid chamber is pressurized by the hydraulic clamp device alone without requiring the transfer and pressurization of the working liquid from the outside.
  • the method for manufacturing a hydraulic clamp device is the method for manufacturing the hydraulic clamp device, wherein the first member and the second member are relative to each other in the axial direction. By moving the member to, the first member and the second member are fitted to each other.
  • the adhesive layer located in front of any of the sealing members when viewed in the moving direction of the second member with respect to the first member is the first member and the said.
  • the adhesive layer formed on the first member before fitting with the second member and located behind any of the sealing members in the same moving direction is the second member before fitting. It is formed on the member of.
  • the adhesive layer does not come into contact with the seal member when the second member is assembled (inserted) with respect to the first member, and the adhesive does not adhere to the seal member during assembly. ..
  • the concentricity, cylindricity, and roundness of the cylindrical member are improved, and more highly accurate clamping is performed.
  • the hydraulic clamp device 10 is a mandrel type clamp device, and has a main body (first member) 12 as shown in FIG.
  • the main body 12 has a first shaft end portion 14, a mandrel main portion 16, a flange portion (diameter expansion portion) 18, and a second shaft end portion 20 in order on the same axis in the axial direction, and has a circular cross-sectional shape. Includes rod-shaped part.
  • the first shaft end portion 14 and the second shaft end portion 20 have the same outer diameter.
  • the mandrel main portion 16 has an outer diameter larger than that of the first shaft end portion 14 and the second shaft end portion 20.
  • the flange portion 18 has an outer diameter further larger than that of the mandrel main portion 16, and is an outward flange portion (first outward flange portion) that is extended radially outward with respect to the mandrel main portion 16. It serves as a stopper for setting the arrangement positions of the cylindrical member 30 and the clamped member W1 in the axial direction in an abutting manner.
  • a thin-walled cylindrical member (second member) 30 is fixed to the outer periphery of the mandrel main portion 16 by an adhesive layer 32.
  • the cylindrical member 30 includes an inner peripheral surface (second peripheral surface) 30A that fits on the outer peripheral surface (first peripheral surface) 16A of the mandrel main portion 16, and an outer peripheral surface 30B that clamps the cylindrical member to be clamped W1. And one end face 30C of an annular shape facing the one disk-shaped end face 18A of the flange portion 18 in the axial direction.
  • the outer diameter OD1 of the outer peripheral surface 16A of the mandrel main portion 16 is smaller than the inner diameter ID1 of the inner peripheral surface 30A of the cylindrical member 30.
  • (Inner diameter ID1)-(Outer diameter OD1) may be about 50 to 150 ⁇ m.
  • Circumferential groove-shaped recesses 16B and 30D are formed at the same positions in the axial direction on the outer peripheral surface 16A of the mandrel main portion 16 and the inner peripheral surface 30A of the cylindrical member 30.
  • the recesses 16B and 30D have a predetermined length in the axial direction between the mandrel main portion 16 and the cylindrical member 30, and have a cross-sectional shape extending over the entire circumference of the outer peripheral surface 16A of the mandrel main portion 16. Defines an annular working liquid chamber 40.
  • the adhesive layer 32 is a fitting portion between the outer peripheral surface 16A of the mandrel main portion 16 and the inner peripheral surface 30A of the cylindrical member 30, and operates in the axial direction away from the axial end portion of the working liquid chamber 40.
  • Two liquid chambers 40 are provided on both sides of the liquid chamber 40 so as to be spaced apart from each other in the axial direction to form a pair, and the main body 12 and the cylindrical member 30 are fixed to each other by adhesion (adhesion).
  • the adhesive layer 32 is formed by an adhesive filled in the adhesive groove 34 formed by the peripheral groove formed on the outer peripheral surface 16A of the mandrel main portion 16.
  • Suitable adhesives for forming the adhesive layer 32 include a two-component epoxy adhesive and an anaerobic adhesive.
  • each adhesive layer 32 due to the adhesive filled in each adhesive groove 34 is a value of 1/2 of the value obtained by subtracting the outer diameter OD2 of the adhesive groove from the inner diameter ID1 of the inner peripheral surface 30A of the cylindrical member 30.
  • the thickness of the adhesive layer 32 is reliably set with high uniformity depending on the depth of the adhesive groove 34.
  • each adhesive layer 32 is determined by the maximum shear strength determined by the type of adhesive and the like.
  • the optimum dimension of each adhesive layer 32 in the axial direction is determined by the outer diameter OD1 of the outer peripheral surface 16A of the mandrel main portion 16.
  • an uncured liquid adhesive is applied to and filled in each adhesive groove 34 of the mandrel main portion 16, and an O-ring 38 is attached to each O-ring groove 36 described later. .. After that, the cylindrical member 30 is moved from the end surface 14A side of the first shaft end portion 14 in the axial direction with respect to the main body 12 until the end surface 30C of the cylindrical member 30 abuts on the end surface 18A of the flange portion 18. 30 is fitted to the outer peripheral surface 16A of the mandrel main portion 16 with the inner peripheral surface 30A.
  • the axial assembly position of the cylindrical member 30 with respect to the main body 12 is uniquely determined.
  • the axial assembly position of the cylindrical member 30 with respect to the main body 12 is determined by using another jig or the like, the end surface 30C of the cylindrical member 30 abuts on the end surface 18A of the flange portion 18. There is no need.
  • An O-ring groove 36 is formed on the outer peripheral surface 16A of the portion 16 by a peripheral groove.
  • An elastic O-ring 38 forming a sealing member is mounted on each O-ring groove 36.
  • Each O-ring 38 oppressively contacts the inner peripheral surface 30A of the cylindrical member 30 to seal the working liquid chamber 40 in a liquidtight manner.
  • the hydraulic clamping device 10 is provided between the main body 12 and the cylindrical member 30 at each position outside the axial direction of both ends of the working liquid chamber 40, and is provided in the axial direction of the working liquid chamber 40. It has a sealing member with an annular O-ring 38 that is sandwiched between the two and paired with each other. Further, the hydraulic clamp device 10 has the main body 12 and the cylindrical member at each position on the outer side in the axial direction further than both O-rings 38 (paired seal members) in order to fix the cylindrical member 30 to the main body 12. It has a pair of adhesive layers 32 provided between 30 and 30.
  • the two O-rings 38 are located at positions separated from each other in the axial direction, and each of the two O-rings repressively abuts on the inner peripheral surface 30A of the cylindrical member 30 over the entire circumference of the cylindrical member 30 with respect to the mandrel main portion 16. Centering is also performed to increase the degree of concentricity between the mandrel main portion 16 and the cylindrical member 30.
  • the mandrel main portion 16 is a fitting portion with the cylindrical member 30, and has an outer diameter OD3 larger than the outer peripheral surface 16A between the arrangement portion of each O-ring 38 and the adhesive layer 32 adjacent to the arrangement portion. It has, that is, has a land portion 42 by expanding the diameter.
  • the fitting gap of the land portion 42 due to the difference between the inner diameter ID1 of the inner peripheral surface 30A of the cylindrical member 30 and the outer diameter OD3 of the land portion 42 is the other portion, that is, the outer diameter OD1 of the outer peripheral surface 16A and the inner diameter of the cylindrical member 30. It is smaller than the fitting gap due to the difference between the peripheral surface 30A and the inner diameter ID1.
  • the land portion 42 acts as an adhesive blocking portion for preventing the adhesive of the adhesive layer 32 from entering the arrangement portion of the O-ring 38, and the O-ring 38 acts as an adhesive blocking portion. Prevents the adhesive from adhering to the surface.
  • the main body 12 has a piston chamber 50 extending in the axial direction along the central axis over the first shaft end portion 14 and the mandrel main portion 16.
  • a piston 52 is fitted in the piston chamber 50 so as to be movable in the axial direction.
  • One end of the piston chamber 50 communicates with the working liquid chamber 40 by an axial passage 54 and a plurality of radial passages 56 formed in the mandrel main portion 16.
  • the passage 54 is opened to the end surface 20A of the second shaft end portion 20 by the drilling hole 66 for the convenience of drilling, but this opening is screw-engaged with the second shaft end portion 20 and is made of steel. It is liquid-tightly closed by a screw stopper 69 having a ball 68 as a sealing member.
  • the chamber space, the passages 54, 56 and the working liquid chamber 40 on the passage 54 side of the piston chamber 50 separated by the piston 52 form one closed space, and are filled with hydraulic oil (working liquid) such as grease. There is.
  • a screw hole 58 that extends in the axial direction on the central axis of the first shaft end portion 14 and communicates with the other end of the piston chamber 50, and an end face of the first shaft end portion 14 that communicates with the screw hole 58.
  • a tool insertion hole 60 opened in 14A is formed.
  • a working screw member 62 with a hexagonal hole is screw-engaged with the screw hole 58.
  • a steel ball 64 is arranged between the working screw member 62 and the piston 52. The operating screw member 62 is screwed into the screw hole 58 toward the piston chamber 50, and the screwing causes the piston 52 to move forward (moving in the axial direction to the left as seen in FIG. 1) via the steel ball 64. ..
  • the pressure structure is configured in this way, and the piston 52 moves the piston chamber 50 to the passage 54 side (left side as seen in FIG. 1) by the forward movement of the operating screw member 62.
  • the hydraulic oil in the hydraulic fluid chamber 40 is pressurized, and the pressure of the hydraulic oil rises. Due to the increase in the pressure of the hydraulic oil, the cylindrical member 30 is elastically deformed and deformed in the radial direction.
  • the member W1 to be clamped is clamped on the outer peripheral surface 30B of the cylindrical member 30 under the expanded diameter deformation of the cylindrical member 30.
  • the clamped member W1 has a central hole A fitted to the outer periphery of the cylindrical member 30, and the outer circumference of the cylindrical member 30 is placed on the inner peripheral surface of the central hole A due to the enlarged diameter deformation of the cylindrical member 30.
  • the surfaces 30B are in close contact with each other, they are fixed (clamped) to the hydraulic clamping device 10.
  • the cylindrical member 30 is fixed to the main body 12 by adhesive fitting of the adhesive layer 32 without press-fitting or brazing.
  • the stress at the time does not remain in the cylindrical member 30.
  • the concentricity, cylindricity, and roundness of the cylindrical member 30 are improved, and more accurate clamping is performed.
  • the cylindrical member 30 side of the working liquid chamber 40 is defined by the recess (boring machined portion) 30D formed on the inner peripheral surface 30A of the cylindrical member 30, the adhesive existing outside the cylindrical member 30 in the axial direction. It is thinner than the portion corresponding to the layer 32 and the O-ring 38. As a result, the diameter-expanding deformation of the cylindrical member 30 due to the pressure increase of the hydraulic oil in the hydraulic fluid chamber 40 is concentrated on the thin portion due to the recess 30D.
  • the stress due to the expansion deformation of the cylindrical member 30 is less likely to act on the adhesive layer 32 and the O-ring 38, and the adhesive strength between the main body 12 and the cylindrical member 30 due to the adhesive layer 32 and the liquid tightness of the working liquid chamber 40. It requires less strength.
  • the land portion 42 acts as an adhesive blocking portion for preventing the adhesive of the adhesive layer 32 from invading the arrangement portion of the O-ring 38, and suppresses the adhesive from adhering to the O-ring 38. Even if an adhesive is used, the elasticity of the O-ring 38 is suppressed from being hindered by the adhesive that adheres to the O-ring 38 and is hardened, and the deterioration of the sealing performance is suppressed. As a result, the liquidtightness of the working liquid chamber 40 is stably ensured.
  • the land portion 42 keeps the clearance between the land portion 42 and the cylindrical member 30 optimally over the entire circumference, and suppresses fluctuations in the thickness of the adhesive layer 32 in the circumferential direction. As a result, the adhesive strength between the main body 12 and the cylindrical member 30 by the adhesive layer 32 is stabilized. Further, the land portion 42 also acts as a guide portion when the cylindrical member 30 is fitted and inserted into the mandrel main portion 16 to improve the assembling workability.
  • the main body 12 and the cylindrical member 30 may be made of an iron-based metal, but since the cylindrical member 30 is fixed to the main body 12 by the adhesive of the adhesive layer 32, the main body 12 and the cylindrical member 30 are fixed to the main body 12.
  • the cylindrical member 30 can be made of different materials.
  • the main body 12 is made of a metal such as an iron-based metal
  • the cylindrical member 30 has a higher elastic modulus than the main body 12, and is more wear resistant than fiber reinforced plastics such as GFRP, CFRP, and KFRP, engineering plastics, and the main body 12. It may be composed of a high iron-based metal, a non-iron-based metal, or the like. That is, the main body 12 and the cylindrical member 30 may be made of different materials having a higher elastic modulus and wear resistance of the cylindrical member 30 than the main body 12.
  • the performance of the cylindrical member 30 can be specialized in terms of high expansion resistance and wear resistance, separately from the main body 12.
  • the cylindrical member 30 is made of CFRP to ensure the strength required for each of the main body 12 and the cylindrical member 30.
  • the performance (physical properties) of the cylindrical member 30 can be specialized to have high expandability separately from the main body 12.
  • the amount of diameter-expanding deformation of the cylindrical member 30 with respect to a predetermined boosting of the working liquid chamber 40 increases, and the clamped member W1 is reliably clamped.
  • the cylindrical member 30 is easily deformed by expanding the diameter with respect to the pressure increase of the working liquid chamber 40, the pressure increase of the working liquid chamber 40 for obtaining the required clamping force is small, and the main body 12 by the adhesive layer 32 is required. The adhesive strength between the and the cylindrical member 30 is small.
  • FIG. 2 the portion corresponding to FIG. 1 is designated by the same reference numeral as that shown in FIG. 1, and the description thereof will be omitted.
  • a ring member 70 made of resin, rubber, or the like is provided along the side surface opposite to the working liquid chamber 40 of the O-ring groove 36 in the axial direction.
  • the ring member 70 has a portion that protrudes outward in the radial direction from the O-ring groove 36, and the gap between the inner peripheral surface 30A of the cylindrical member 30 is increased by the amount of protrusion to the outer diameter of the outer peripheral surface 16A of the mandrel main portion 16. It is smaller than the fitting gap due to the difference between the OD1 and the inner diameter ID1 of the inner peripheral surface 30A of the cylindrical member 30.
  • the ring member 70 acts as an adhesive dammed portion equivalent to the land portion 42 of the first embodiment, and prevents the adhesive of the adhesive layer 32 from invading the arrangement portion of the O-ring 38.
  • the adhesion of the adhesive to the O-ring 38 is suppressed, and even if the adhesive is used, the elasticity of the O-ring 38 is suppressed from being hindered by the hardened adhesive attached to the O-ring 38. Therefore, the deterioration of the sealing performance is suppressed. As a result, the liquidtightness of the working liquid chamber 40 is stably ensured.
  • the ring member 70 also acts as a backup ring that prevents the O-ring 38 from entering the above-mentioned fitting gap due to deformation of the working liquid chamber 40 due to hydraulic pressure. As a result, deterioration of the sealing performance due to abnormal deformation of the O-ring 38 is suppressed.
  • the second embodiment is substantially the same as the first embodiment except for the ring member 70, and exhibits the same operations and effects as those of the first embodiment.
  • FIG. 3 the portion corresponding to FIG. 1 is designated by the same reference numeral as that shown in FIG. 1, and the description thereof will be omitted.
  • the mandrel main portion 16 is a fitting portion with the cylindrical member 30, and the O-ring groove 72 is formed on the outer peripheral surface 16A between each O-ring groove 36 and the adhesive layer 32 on the corresponding side. Have. An elastic O-ring 74 is attached to each O-ring groove 72.
  • Each O-ring 74 oppressively abuts on the inner peripheral surface 30A of the cylindrical member 30 and acts as an adhesive blocking portion that prevents the adhesive of the adhesive layer 32 from invading the arrangement portion of the O-ring 38.
  • the adhesion of the adhesive to the O-ring 38 is suppressed, and even if the adhesive is used, the elasticity of the O-ring 38 is suppressed from being hindered by the adhesive that adheres to the O-ring 38 and is hardened. Therefore, the deterioration of the sealing performance is suppressed. As a result, the liquidtightness of the working liquid chamber 40 is stably ensured.
  • the third embodiment is substantially the same as the first embodiment except for the O-ring 74, and exhibits the same actions and effects as those of the first embodiment.
  • FIG. 4 the portion corresponding to FIG. 1 is designated by the same reference numeral as that shown in FIG. 1, and the description thereof will be omitted.
  • the mandrel main portion 16 is a fitting portion with the cylindrical member 30, and has an outer diameter OD3 larger than the outer peripheral surface 16A at each position on the outer side in the axial direction from each adhesive layer 32. That is, it has a land portion 44 due to an expanded diameter. That is, the land portion 44 is formed at a position further axially away from the adhesive layer 32 with respect to the working liquid chamber 40.
  • the land portion 44 keeps the clearance between the mandrel main portion 16 and the cylindrical member 30 optimally over the entire circumference, and suppresses fluctuations in the thickness of the adhesive layer 32 in the circumferential direction. As a result, the adhesive strength between the main body 12 and the cylindrical member 30 by the adhesive layer 32 is stabilized. In addition, the land portion 44 also acts as a guide portion when the cylindrical member 30 is fitted and inserted into the mandrel main portion 16 to improve the assembling workability.
  • the fourth embodiment is substantially the same as the first embodiment except for the land portion 44, and exhibits the same actions and effects as those of the first embodiment.
  • FIG. 5 the portion corresponding to FIG. 1 is designated by the same reference numeral as that shown in FIG. 1, and the description thereof will be omitted.
  • the hydraulic clamp device 10 of the fifth embodiment is provided between the main body 12 and the cylindrical member 30 at each position on the outer side in the axial direction further than both O-rings 38 (paired seal members) and 74. It has a pair of adhesive layers 32, 82 and adhesive grooves 34, 80. Adhesive layers 32 and 82 are formed by applying and filling the adhesive grooves 34 and 80 with an adhesive.
  • the adhesive layer 32 and the adhesive groove (one adhesive groove) 34 on the flange portion 18 side of the working liquid chamber 40 are formed on the outer peripheral surface 16A of the mandrel main portion 16 as in the first embodiment.
  • the adhesive groove (the other adhesive groove) 80 and the adhesive layer 82 on the first shaft end 14 side of the working liquid chamber 40 are on the opposite side of the flange 18 in the axial direction. It is formed on the inner peripheral surface 30A.
  • each adhesive groove 34 (see FIG. 5) of the mandrel main portion 16 and each adhesive groove 80 of the cylindrical member 30. (See FIG. 5) is coated with and filled with an uncured liquid adhesive to form adhesive layers 32 and 82. Further, the O-rings 38 and 74 are mounted on the O-ring grooves 36 and 72 (see FIG. 5).
  • the end surface 30C of the cylindrical member 30 abuts against the end surface 18A of the flange portion 18 in the axial direction from the end surface 14A side of the first shaft end portion 14 toward the flange portion 18 with respect to the main body 12.
  • the cylindrical member 30 is fitted to the outer peripheral surface 16A of the mandrel main portion 16 with the inner peripheral surface 30A.
  • the flange portion 18 acts as a foolproof when the cylindrical member 30 is assembled to the main body 12, and the assembly direction (insertion direction) of the cylindrical member 30 to the main body 12 is set to the end surface of the first shaft end portion 14. In the figure from the 14A side toward the flange portion 18, it is limited to the left direction, and insertion from the opposite direction is prohibited.
  • the adhesive groove 34 on the flange portion 18 side and the adhesive layer 32 are on the front side when viewed from any of the O-rings 38 and 74.
  • the adhesive groove 34 is formed in the main body 12.
  • the adhesive groove 34 is formed on the outer periphery of the main body 12.
  • the adhesive layer 32 is provided on the main body 12 before the main body 12 and the cylindrical member 30 are fitted.
  • the adhesive groove 80 and the adhesive layer 82 (the other adhesive groove 80 and the adhesive layer 82) on the opposite side of the flange portion 18 side are viewed in the same movement direction as any of the O-rings 38 and 74. Be on the back side.
  • the adhesive groove 80 is formed on the inner circumference of the cylindrical member 30.
  • the adhesive layer 82 is provided on the cylindrical member 30 before the main body 12 and the cylindrical member 30 are fitted.
  • the adhesive groove 34 and the adhesive layer 32 located on the front side (flange portion 18 side) of any of the O-rings 38 and 74 mounted on the main body 12 when viewed in the moving direction of the cylindrical member 30 with respect to the main body 12. Is formed on the main body 12 before fitting the main body 12 and the cylindrical member 30, and is located on the rear side (opposite side of the flange portion 18) of any of the O-rings 38 and 74 when viewed in the same moving direction.
  • the 80 and the adhesive layer 82 are formed on the cylindrical member 30 before the main body 12 and the cylindrical member 30 are fitted.
  • the adhesive does not adhere to the O-rings 38 and 74 during assembly, and the functions of the O-rings 38 and 74 are not impaired by the adhesion and curing of the adhesive.
  • the fifth embodiment is substantially the same as the first embodiment except for the adhesive grooves 34 and 80 and the adhesive layers 32 and 82, and exhibits the same actions and effects as those of the first embodiment.
  • FIG. 7 the portion corresponding to FIG. 5 is designated by the same reference numeral as that shown in FIG. 5, and the description thereof will be omitted.
  • the flange portion 18 is omitted, and the second shaft end portion 20 forms the enlarged diameter portion on the left side in the drawing with respect to the mandrel main portion 16.
  • the second shaft end 20 defines the annular end face (shoulder face) 20B of the second shaft end 20 facing the annular end face 30C of the cylindrical member 30 at the boundary with the mandrel main portion 16. ..
  • the second shaft end portion 20 acts as a foolproof when the cylindrical member 30 is assembled to the main body 12, and as in the fifth embodiment, the assembling direction (insertion direction) of the cylindrical member 30 to the main body 12. ) Is limited to the left direction in the view from the end surface 14A side of the first shaft end portion 14 to the end surface 20B of the second shaft end portion 20, and insertion from the opposite direction is prohibited.
  • the adhesive layer 32 is formed on the main body 12 before the main body 12 and the cylindrical member 30 are fitted, and is rearward of any of the O-rings 38 and 74 when viewed in the same moving direction (opposite of the second shaft end portion 20).
  • the adhesive groove 80 and the adhesive layer 82 located on the side) are formed in the cylindrical member 30 before the main body 12 and the cylindrical member 30 are fitted.
  • the adhesive of the adhesive layer 82 does not come into contact with any of the O-rings 38 and 74, and the adhesive adheres and cures to cause the O-rings 38 and 74.
  • the function of is not impaired.
  • FIG. 8 the portion corresponding to FIG. 1 is designated by the same reference numeral as that shown in FIG. 1, and the description thereof will be omitted.
  • each adhesive groove 34 has a downward slope toward the flange portion 18, that is, an upright slope 34A due to a tapered surface in which the groove becomes deeper, and an upright ring surface that rises radially outward from the end of the slope 34A. It has triangular cross sections of the same shape as defined by the surface 34B.
  • the upright surface 34B of each adhesive groove 34 is aligned with the front side (left side when viewed in FIG. 8) of the slope 34A in the insertion direction of the cylindrical member 30 with respect to the main body 12, and all of them are on the flange portion 18 side of the adhesive groove 34. Makes the side of.
  • each of the adhesive grooves 34 when the cylindrical member 30 is inserted into the main body 12, the adhesive filled in each of the adhesive grooves 34 overflows to the outside of the adhesive grooves 34. Since the side surface on the flange portion 18 side of the above is an upright surface 34B, the side surface is effectively blocked as compared with the case where the side surface is a gentle slope, and the adhesive is likely to remain in the adhesive groove 34.
  • the seventh embodiment is substantially the same as the first embodiment except for the shape of the adhesive groove 34, and exhibits the same actions and effects as those of the first embodiment.
  • FIG. 9 the portion corresponding to FIG. 1 is designated by the same reference numeral as that shown in FIG. 1, and the description thereof will be omitted.
  • the cylindrical member 30 is formed with an annular outward flange portion (second outward flange portion) 31 extending radially outward from the shaft end on the flange portion 18 side.
  • the outward flange portion 31 faces the flange portion (first outward flange portion) 18 of the main body 12.
  • An annular adhesive groove 33 is formed on the surface of the flange portion 18 facing the outward flange portion 31.
  • the adhesive groove 33 is filled with an adhesive, and the adhesive forms an additional adhesive layer 35 existing between the facing surfaces of the flange portion 18 and the outward flange portion 31.
  • the adhesive layer 35 is an adhesive layer equivalent to the adhesive layer 32 as an adhesive layer for adhering (adhering) the main body 12 and the cylindrical member 30 to each other, and by adding the adhesive layer 35, The adhesive strength of the cylindrical member 30 to the main body 12 is increased.
  • the eighth embodiment is substantially the same as the first embodiment except for the additional adhesive layer 35, and exhibits the same actions and effects as those of the first embodiment.
  • FIG. 10 the portion corresponding to FIG. 1 is designated by the same reference numeral as that shown in FIG. 1, and the description thereof will be omitted.
  • the adhesive groove 34 includes a spiral groove surrounding the outer periphery of the mandrel main portion 16, and includes an adhesive layer 32 made of an adhesive filled in the spiral groove.
  • the spiral adhesive layer 32 in addition to the circumferential adhesive strength (shear strength) of the cylindrical member 30 to the main body 12, the axial adhesive strength (shear strength) is also improved.
  • the ninth embodiment is substantially the same as the first embodiment except for the adhesive groove 34, and exhibits the same actions and effects as those of the first embodiment.
  • the hydraulic clamp device 100 is a chuck type clamp device and has a main body (first member) 102.
  • the main body 102 has a tubular portion 104 and a flange portion 106 on the same axis in order in the axial direction.
  • the flange portion 106 has a diameter larger than that of the tubular portion 104 and forms an outward flange portion that is expanded in the radial direction.
  • a thin-walled cylindrical member (second member) 110 is fixed to the inner circumference of the main body 102 by an adhesive layer 112.
  • the cylindrical member 110 has an outer peripheral surface (second peripheral surface) 110A that fits into the inner peripheral surface (first peripheral surface) 102A of the main body 102, and an inner peripheral surface 110B that clamps a round bar-shaped member to be clamped W2. And have. The details of fixing (adhering) the cylindrical member 110 to the main body 102 by the adhesive layer 112 will be described later.
  • a peripheral groove-shaped recess 110C is formed on the outer peripheral surface 110A of the cylindrical member 110.
  • the recess 110C has a predetermined length in the axial direction between the main body 102 and the cylindrical member 110, and has an annular cross-sectional shape extending over the entire inner peripheral surface 102A of the main body 102.
  • the liquid chamber 120 is defined.
  • Each adhesive layer 112 is a fitting portion between the inner peripheral surface 102A of the main body 102 and the outer peripheral surface 110A of the cylindrical member 110, and is a working liquid separated from the axial end of the working liquid chamber 120 in the axial direction. Two of each of the chambers 120 are provided so as to be spaced apart from each other in the axial direction to form a pair, and the main body 102 and the cylindrical member 110 are fixed to each other by adhesion (sticking).
  • the adhesive layer 112 is formed by an adhesive filled in the adhesive groove 114 formed by the peripheral groove formed on the outer peripheral surface 110A of the cylindrical member 110. Suitable adhesives for forming the adhesive layer 112 include a two-component epoxy adhesive and an anaerobic adhesive.
  • each adhesive layer 112 due to the adhesive filled in each adhesive groove 114 is determined by a value of 1/2 of the value obtained by subtracting the outer diameter of the adhesive groove from the inner diameter of the inner peripheral surface 102A of the main body 102.
  • the optimum thickness of each adhesive layer 112 is determined by the maximum shear strength determined by the type of adhesive and the like.
  • the optimum dimension of each adhesive layer 112 in the axial direction is determined by the inner diameter of the cylindrical member 110 and the like.
  • An O-ring groove 116 formed by a peripheral groove is formed on the outer peripheral surface 110A.
  • Each O-ring groove 116 is fitted with an elastic O-ring 118 forming a sealing member.
  • Each O-ring 118 oppressively contacts the inner peripheral surface 102A of the main body 102 to seal the working liquid chamber 120 in a liquidtight manner.
  • the hydraulic clamping device 100 is provided between the main body 102 and the cylindrical member 110 at each position outside the axially end ends of the working liquid chamber 120 to form a pair of annular O-rings. It has a sealing member with a ring 118. Further, in the hydraulic clamp device 100, in order to fix the cylindrical member 110 to the main body 102, the main body 102 and the cylindrical member are positioned further outward in the axial direction than the two O-rings 118 (paired seal members). It has a pair of adhesive layers 112 provided between the 110 and 110.
  • the two O-rings 118 are located at positions separated from each other in the axial direction, and each of them repressively abuts on the inner peripheral surface 102A of the main body 102 over the entire circumference to center the cylindrical member 110 with respect to the main body 102. This also acts to increase the degree of concentricity between the main body 102 and the cylindrical member 110.
  • the cylindrical member 110 is a fitting portion with the main body 102, and has an O-ring groove 122 on the outer peripheral surface 110A between each O-ring groove 116 and the adhesive layer 112 on the corresponding side.
  • An elastic O-ring 124 is mounted on each O-ring groove 122.
  • Each O-ring 124 elastically contacts the inner peripheral surface 102A of the main body 102, and acts as an adhesive blocking portion for preventing the adhesive of the adhesive layer 112 from invading the arrangement portion of the O-ring 118.
  • the adhesion of the adhesive to the O-ring 118 is suppressed, and even if the adhesive is used, the elasticity of the O-ring 118 is suppressed from being hindered by the adhesive that adheres to the O-ring 118 and is hardened. Therefore, the deterioration of the sealing performance is suppressed. As a result, the liquidtightness of the working liquid chamber 120 is stably ensured.
  • the main body 102 has a piston chamber 130 extending in the axial direction.
  • a piston 132 is fitted in the piston chamber 130 so as to be movable in the axial direction.
  • One end of the piston chamber 130 communicates with the working liquid chamber 120 by a radial passage 134 formed in the main body 102.
  • the chamber space, the passage 134, and the working liquid chamber 120 on the passage 134 side of the piston chamber 130 separated by the piston 132 form one closed space, and are filled with hydraulic oil (working liquid) such as grease.
  • the main body 102 is formed with a screw hole 136 that extends in the axial direction, communicates with the other end of the piston chamber 130, and opens in the end surface 104A of the main body 102.
  • a working screw member 138 with a hexagonal hole is screw-engaged with the screw hole 136.
  • a steel ball 140 is arranged between the working screw member 138 and the piston 132. The operating screw member 138 is screwed into the screw hole 136 toward the piston chamber 130, and the screwing is transmitted to the piston 132 via the steel ball 140.
  • the pressure structure is configured, and the piston 132 moves the piston chamber 130 to the passage 134 side (left side when viewed in FIG. 11) by screwing the working screw member 138, so that the hydraulic oil in the working liquid chamber 120 is released.
  • the pressure is applied, and the cylindrical member 110 is radially inwardly reduced due to elastic deformation in the radial direction.
  • the member W2 to be clamped is clamped on the inner peripheral surface 110B of the cylindrical member 110 under the reduced diameter deformation of the cylindrical member 110. More specifically, the member to be clamped W2 is fixed (clamped) to the hydraulic clamping device 100 by bringing the inner peripheral surface 110B of the cylindrical member 110 into close contact with the outer peripheral surface due to the reduced diameter deformation of the cylindrical member 110.
  • the hydraulic clamping device 100 of the tenth embodiment clamps the round bar-shaped clamped member W2 in a centered state (concentric state).
  • the cylindrical member 110 is fixed to the main body 102 by the adhesive of the adhesive layer 112, not by the press-fitting, so that the cylindrical member 110 is fixed to the main body 102 by the adhesive at the time of the press-fitting. No stress remains on the cylindrical member 110. As a result, it is avoided that the concentricity, cylindricity, and roundness of the cylindrical member 110 are lowered, and high-precision clamping is performed.
  • the working liquid chamber 120 is defined by the recess 110C formed on the outer peripheral surface 110A of the cylindrical member 110, it corresponds to the adhesive layer 112 and the O-rings 118 and 124 existing on the outer side in the axial direction. Since the wall thickness is thinner than that of the portion, the reduced diameter deformation of the cylindrical member 110 due to the pressure increase of the hydraulic oil in the hydraulic fluid chamber 120 is concentrated on the thin wall portion due to the recess 110C.
  • the main body 102 and the cylindrical member 110 may be made of an iron-based metal, but the cylindrical member 110 is fixed to the main body 102 by adhesion of the adhesive layer 112 with an adhesive.
  • the main body 102 and the cylindrical member 110 can be made of different materials.
  • FIG. 12 the portion corresponding to FIG. 11 is designated by the same reference numeral as that shown in FIG. 11, and the description thereof will be omitted.
  • the hydraulic clamp device 100 of the eleventh embodiment is provided between the main body 102 and the cylindrical member 110 at each position on the outer side of both O-rings 118 (paired seal members) and 124 in the axial direction. It has a pair of adhesive layers 112, 144 and adhesive grooves 114, 142. Adhesive layers 112 and 144 are formed by applying and filling the adhesive grooves 114 and 142 with an adhesive.
  • the hydraulic clamp device 100 of the eleventh embodiment further has an inward flange portion (diameter reduced portion) 108 provided at the shaft end on the flange portion 106 side of the main body 102.
  • the inward flange portion 108 projects radially inward from the shaft end of the main body 102 in an annular shape, has an inner diameter smaller than the inner diameter of the inner peripheral surface 102A, and forms a part of the main body 102.
  • the right end surface 108A forms a stopper surface that uniquely determines the axial assembly position of the cylindrical member 110 with respect to the main body 102 by abutting the end surface 110D of the cylindrical member 110.
  • the assembly direction (insertion direction) of the cylindrical member 110 with respect to the main body 102 is limited to the left direction in the view from the end surface 104A side of the tubular portion 104 toward the inward flange portion 108, and insertion from the opposite direction is prohibited. Makes a proof part.
  • the end surface 110D of the cylindrical member 110 collides with the end surface 108A of the inward flange portion 108. You don't have to hit it.
  • the adhesive groove 142 and the adhesive layer 144 (one of them) on the inward flange 108 side when viewed in the moving direction of the cylindrical member 110 with respect to the main body 102 in the fitting of the main body 102 and the cylindrical member 110 (to the left in the figure).
  • the adhesive groove 142 and the adhesive layer 144) are on the front side of any of the O-rings 118 and 124.
  • the adhesive groove 142 is formed on the inner circumference of the main body 102.
  • the adhesive layer 144 is provided on the main body 102 before fitting the main body 102 and the cylindrical member 110.
  • the adhesive groove 114 and the adhesive layer 112 (the other adhesive groove 114 and the adhesive layer 112) on the opposite side of the inward flange portion 108 side are in the same movement direction as any of the O-rings 118 and 124. Look at the back side.
  • the adhesive groove 114 is formed on the outer periphery of the cylindrical member 110.
  • the adhesive layer 112 is provided on the cylindrical member 110 before fitting the main body 102 and the cylindrical member 110.
  • the adhesive groove 142 and the adhesive located on the front side (inward flange portion 108 side) of any of the O-rings 118 and 124 mounted on the main body 102 when viewed in the moving direction of the cylindrical member 110 with respect to the main body 102.
  • the layer 144 is formed on the main body 102 before fitting the main body 102 and the cylindrical member 110, and is located on the rear side (opposite side of the inward flange portion 108) of any of the O-rings 118 and 124 when viewed in the same moving direction.
  • the adhesive groove 114 and the adhesive layer 112 to be formed are formed on the cylindrical member 110 before fitting the main body 102 and the cylindrical member 110.
  • the adhesive does not adhere to the O-rings 118 and 124 during assembly, and the functions of the O-rings 118 and 124 are not impaired by the adhesion and curing of the adhesive.
  • two adhesive layers 32, 82, 112 and 144 are provided on both sides of the working liquid chambers 40 and 120 in the axial direction, but these adhesive layers 32, 82, 112 and 144 are provided. May be one on both sides of the working liquid chambers 40 and 120 in the axial direction, or may be two or more.
  • the adhesive grooves 34, 80, 114, 142 are not essential, and the adhesive layers 32, 82, 112, 144 are fitted between the outer peripheral surface 16A of the mandrel main portion 16 and the inner peripheral surface 30A of the cylindrical member 30. It may be formed in a gap or a fitting gap between the inner peripheral surface 102A of the main body 102 and the outer peripheral surface 110A of the cylindrical member 110.
  • FIG. 13 shows an embodiment in which the adhesive layer 32 is formed in the fitting gap between the outer peripheral surface 16A of the mandrel main portion 16 and the inner peripheral surface 30A of the cylindrical member 30.
  • the first shaft end portion 14, the mandrel main portion 16, the flange portion 18, and the second shaft end portion 20 do not necessarily have to be on the same axis, and the first shaft end portion 14 and the second shaft end portion 20 are It does not have to be the same outer diameter. Further, the mandrel main portion 16 does not have to have an outer diameter larger than that of the first shaft end portion 14 and the second shaft end portion 20.
  • the O-ring grooves 36 and 72 of the mandrel type hydraulic clamp device 10 may be formed on the inner peripheral surface 30A of the cylindrical member 30, and the O-ring grooves 116 and 122 of the chuck type hydraulic clamp device 100 are the main body 102. It may be formed on the inner peripheral surface 102A of the above. Further, one of the O-ring grooves 36, 72, 116 and 122 formed on both sides of the working liquid chamber 40 in the axial direction may be formed in the cylindrical members 30 and 110, and the other may be formed in the main bodies 12 and 102. ..
  • the assembly of the cylindrical members 30 and 110 with respect to the main bodies 12 and 102 may be performed by moving the main bodies 12 and 102 with respect to the cylindrical members 30 and 110 in the axial direction. That is, the fitting of the main bodies 12 and 102 and the cylindrical members 30 and 110 may be performed by the relative movement of the two in the axial direction.
  • the technical features of each of the above embodiments may be combined with each other.
  • the chuck-type hydraulic clamp device 100 according to the tenth embodiment may be combined with the technical features of the mandrel-type hydraulic clamp device 10 shown in the first to ninth embodiments.
  • Hydraulic clamp device 12 Main body (first member) 14: First shaft end 14A: End face 16: Mandrel main part 16A: Outer peripheral surface (first peripheral surface) 16B: Recessed portion 18: Flange portion (diameter expansion portion, first outward flange portion) 18A: End face 20: Second shaft end (diameter expansion) 20A: End face 30: Cylindrical member (second member) 30A: Inner peripheral surface (second peripheral surface) 30B: Outer peripheral surface 30C: End surface 30D: Recessed portion 31: Outward flange portion (second outward flange portion) 32: Adhesive layer 33: Adhesive groove 34: Adhesive groove 34A: Slope 34B: Upright surface 35: Adhesive layer 36: O-ring groove 38: O-ring (seal member) 40: Working liquid chamber 42: Land part (adhesive dammed part) 44: Land portion 50: Piston chamber 52: Piston 54: Passage 56: Passage 58: Screw hole 60

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)
  • Standing Axle, Rod, Or Tube Structures Coupled By Welding, Adhesion, Or Deposition (AREA)
  • Clamps And Clips (AREA)
PCT/JP2019/043958 2019-11-08 2019-11-08 液圧式クランプ装置及び液圧式クランプ装置の製造方法 WO2021090492A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201980100432.0A CN114502305B (zh) 2019-11-08 2019-11-08 液压式夹紧装置及液压式夹紧装置的制造方法
JP2021554547A JP7438233B2 (ja) 2019-11-08 2019-11-08 液圧式クランプ装置及び液圧式クランプ装置の製造方法
PCT/JP2019/043958 WO2021090492A1 (ja) 2019-11-08 2019-11-08 液圧式クランプ装置及び液圧式クランプ装置の製造方法

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PCT/JP2019/043958 WO2021090492A1 (ja) 2019-11-08 2019-11-08 液圧式クランプ装置及び液圧式クランプ装置の製造方法

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CN (1) CN114502305B (enrdf_load_stackoverflow)
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57184611A (en) * 1981-04-24 1982-11-13 Roehm Guenter H Clamping mandrel with clamping sleeve which can be extended according to hydraulic force system
JP2004308679A (ja) * 2003-04-02 2004-11-04 Calsonic Compressor Seizo Kk バルブ取付け穴およびバルブ並びに気体圧縮機
WO2019043887A1 (ja) * 2017-08-31 2019-03-07 黒田精工株式会社 液圧式クランプ装置

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JPS6281506U (enrdf_load_stackoverflow) * 1985-11-11 1987-05-25
DE3716986A1 (de) * 1987-05-21 1988-12-15 Emitec Emissionstechnologie Vorrichtung zum hydraulischen aufweiten
DE3816562A1 (de) * 1988-05-14 1989-11-23 Pav Praezisions Apparatebau Ag Spanndorn
CN2655008Y (zh) * 2003-12-09 2004-11-10 姚琪 用于流体管道的柔性联接件
US8944438B2 (en) 2009-04-01 2015-02-03 Hydra-Lock Corporation Fluid-actuated workholder with a collet driven by a soft and thin bladder
CN105562747A (zh) 2014-10-13 2016-05-11 赵慧霞 一种液压夹紧机构
CN105690046B (zh) * 2016-04-21 2018-11-27 重庆大学 双圆盘简支机构加工工装及其精加工方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57184611A (en) * 1981-04-24 1982-11-13 Roehm Guenter H Clamping mandrel with clamping sleeve which can be extended according to hydraulic force system
JP2004308679A (ja) * 2003-04-02 2004-11-04 Calsonic Compressor Seizo Kk バルブ取付け穴およびバルブ並びに気体圧縮機
WO2019043887A1 (ja) * 2017-08-31 2019-03-07 黒田精工株式会社 液圧式クランプ装置

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JP7438233B2 (ja) 2024-02-26
CN114502305A (zh) 2022-05-13

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