US3592131A - Hydraulic cylinder apparatus - Google Patents

Hydraulic cylinder apparatus Download PDF

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Publication number
US3592131A
US3592131A US832195A US3592131DA US3592131A US 3592131 A US3592131 A US 3592131A US 832195 A US832195 A US 832195A US 3592131D A US3592131D A US 3592131DA US 3592131 A US3592131 A US 3592131A
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US
United States
Prior art keywords
cylinder
piston
large diameter
hydraulic
extension
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
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US832195A
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English (en)
Inventor
Tsuruo Otsuka
Eugene E Grankowski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Allied Products Corp
Original Assignee
Verson Allsteel Press Co
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Publication date
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Publication of US3592131A publication Critical patent/US3592131A/en
Assigned to MARINE MIDLAND BANK(DELAWARE), NATIONAL ASSOCIATION reassignment MARINE MIDLAND BANK(DELAWARE), NATIONAL ASSOCIATION SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: VERSON ALLSTEEL PRESS COMPANY, A CORP. OF DE.
Assigned to VERSON ALLSTEEL PRESS COMPANY, A CORP OF DE. reassignment VERSON ALLSTEEL PRESS COMPANY, A CORP OF DE. RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: MARINE MIDLAND BANK (DELAWARE) NATIONAL ASSOCIATION
Anticipated expiration legal-status Critical
Assigned to CONTINENTAL BANK N.A. AS AGENT reassignment CONTINENTAL BANK N.A. AS AGENT SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ALLIED PRODUCTS CORPORATION, A DE CORP.
Assigned to ALLIED PRODUCTS CORPORATION reassignment ALLIED PRODUCTS CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: VERSON ALLSTEEL PRESS COMPANY
Assigned to CONTINENTAL BANK N.A. reassignment CONTINENTAL BANK N.A. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ALLIED PRODUCTS CORPORATION
Assigned to ALLIED PRODUCTS CORPORATION, A CORP. OF DELAWARE reassignment ALLIED PRODUCTS CORPORATION, A CORP. OF DELAWARE RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: CONTINENTAL BANK N.A.
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/32—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/04—Frames; Guides
    • B30B15/041—Guides

Definitions

  • a hollow hydraulic cylinder body which is open at one end and closed at the other has a cylinder of large diameter at the open end and a cylinder of small diameter at the closed end communicating with the cylinder of large diameter substantially midway between the ends of the cylinder body.
  • a piston body is longitudinally movably received in the cylinder body and it has intermediate its ends a piston of large diameter in the large diameter cylinder, a piston extension of small diameter in the small diameter cylinder and a ram extension of intermediate diameter extending through the open end of the cylinder body and effectively providing the hydraulically movable platen of the hydraulic press.
  • Hydraulic packing is carried by the piston of large diameter and engages the cylinder of large diameter for hydraulically sealing the piston body in the cylinder body.
  • Guide means is provided between the cylinder of small diameter and the piston extension for guiding longitudinal move ment of this end of the piston body, and guide means is provided between the cylinder of large diameter and the ram extension for guiding longitudinal movement of this end of the piston body.
  • the principal object of this invention is to provide a hydraulic cylinder apparatus for a hydraulic press which effectively provides in itself the hydraulically movable platen of the press so that the need for separate platens and guides therefor, such as gib ways, posts or the like, is eliminated.
  • the hydraulic cylinder apparatus includes a hollow cylinder body which is open at one end and closed at the other and which has a cylinder of large diameter at the open end and a cylinder of small diameter at the closed end communicating with the cylinder of large diameter substantially midway between the ends of the cylinder body.
  • a piston body is longitudinally movably received in the cylinder body and it has intermediate its ends a piston of large diameter in the large diameter cylinder, a piston extension of small diameter in the cylinder of small diameter and a ram extension of intermediate diameter extending through the open end of the cylinder body.
  • Guide means is provided between the cylinder of small diameter and the piston extension for guiding longitudinal movement of this end of the piston body, and guide means is provided between the cylinder of large diameter and the ram extension for guiding longitudinal movement of this end of the piston body.
  • the guide means for the ram extension of the piston body preferably includes a plurality of circumferentially spaced rollers radially adjustably carried by the cylinder body for engaging the ram extension in such manner that the rollers may be preloaded for zero clearance.
  • the guide means for the piston extension may also include adjustable rollers or may be a bearing bushing or the like, the choice being dependent upon the degree of accuracy required in guiding. This method of guiding provides much greater accuracy and less deflection of the ram extension or platen when subjected to oil center loading.
  • a key and keyway are preferably utilized for preventing rotation of the piston body with respect to the cylinder body and the piston of large diameter is preferably provided with hydraulic packing to hydraulically seal the piston body in the cylinder body.
  • the hydraulic cylinder apparatus of this invention may be utilized in substantially any press construction, and the direction of its movement may be in substantially any direction as expressed above.
  • the hydraulic cylinder may be in the crown member or the bed member of the press and the latter arrangement is set forth herein by way of illustration.
  • FIG. 1 is a front elevational view of a press structure incorporating the hydraulic cylinder apparatus of this invention
  • FIG. 2 is a side elevational view of the press structure looking from the right of FIG. 1;
  • FIG. 3 is a horizontal sectional view through the press structure taken substantially along the line 3-3 of FIG. 1;
  • FIG. 4 is an enlarged vertical sectional view of the hydraulic cylinder apparatus of this invention and also diagrammatically illustrating portions of the press structure, FIG. 4 being taken substantially along the line 4-4 of FIG. 2;
  • FIG. 5 is a further enlarged horizontal view of a portion of the hydraulic cylinder apparatus, it being an enlargement of a portion of the apparatus illustrated in FIG. 3;
  • FIG. 6 is a vertical sectional view taken substantially along the line 6-6 of FIG. 5.
  • a press structure generally designated at 10 is diagrammatically illustrated in FIGS. 1, 2 and 3. While the press structure may taken various forms, it is shown herein by way of illustration as to include a supporting base 11 suitably secured to a foundation 12. A bed member 13 is suitably secured to the supporting base II and a plurality of columns l4 extend upwardly from the bed member 13 to support a crown member 15, the crown member 15 having a suitable downwardly facing stationary platen 16.
  • the press structure may be prestressed by means of threaded tie rods 17 extending through the bed member 13, the columns 14 and the crown member 15 upon which tie rod nuts 18 and 19 are screw threadedly mounted for prestressing purposes.
  • the foregoing press structure as diagrammatically illustrated in FIGS. 1 to 3 is conventional and a further description thereof is not considered necessary.
  • the bed member 13 is in the form of a hydraulic cylinder body which is open at the top and closed at the bottom, which has a cylinder 22 of large diameter at the open end and which has a cylinder 23 of small diameter at the closed end communicating with the cylinder 22 of large diameter substantially midway between the ends of the cylinder body.
  • a piston body 24 is longitudinally movably received in the cylinder body or bed member 13 and intermediate its end it has a piston 25 of large diameter which is received in the large diameter cylinder 22.
  • the piston body also includes a piston extension 26 of small diameter which is received in the small diameter cylinder 23 and a ram extension 27 of intermediate diameter which extends through the open end of the cylinder body 13, the ram extension 27 providing the hydraulically movable platen of the hydraulic press structure 10.
  • the piston 25 is provided with annular hydraulic packing 28 which is held in place by a shouldered bushing 29 engaging a shoulder on the piston 25 and a shouldered bushing 30 having an upwardly facing shoulder.
  • a retainer ring 31 is secured by screws 32 to the piston 25, the retainer ring 31 engaging the shoulder on the bushing 32 for securing the bushings 29 and 30 and the hydraulic packing 28 in place on the piston 25. In this way the piston body 24 is hydraulically sealed in the cylinder body 13.
  • the ram projection 27 of the piston body 24 is guided for longitudinal movement by a plurality of circumferentially spaced rollers as is shown more clearly in FIGS. 3 to 6.
  • a plurality of circumferentially spaced rollers are illustrated.
  • the cylinder body I3 is provided with a plurality of notches 33 upon which are located a plurality of brackets 34.
  • Each bracket 34 includes a downwardly extending leg extending into the cylinder 22 of large diameter which is provided with a cam surface 35 and side flanges 36 extending therealong.
  • a roller support 37 for each bracket 34 has a downwardly extending extension having a cam surface 38 engaging the cam surface 35 on the bracket 34, the roller support 37 being guided in the bracket 34 by the flanges 36.
  • the roller support 37 is bifurcated as indicated at 39 for receiving the guide roller.
  • a pin 41 having a head 42 extends through the bifurcated end of the roiler support 37 and it has a reduced threaded portion 43 for receiving a nut 43A for securing the pin 41 in place in the roller support 37.
  • the roller support 37 is preferably in the form of a roller bearing having an inner race 44 carried by the pin 4
  • the rollers are sealed by end plates 47 carried by the inner race 44.
  • the roller support 37 is vertically adjustable with respect to the bracket 34 and the amount of vertical adjustment is determined by a shim 48, the bracket 34, the roller support 37 and the shim 48 being secured in place on the cylinder body 13 by screws 49.
  • Upward and downward positioning of the roller support 37 as determined by the thickness of the shim 48 causes radial adjustment of the roller 46 with respect to the ram extension 27 of the piston body 24.
  • the thickness of the shim 48 may be adjusted so as to cause the roller 46 to engage the ram extension 27 with a desired amount of preloading.
  • the ram extension 27 is provided with a plurality of flat inserts 50 so as to provide flat surfaces against which the rollers 46 roll as the ram extension 27 is moved upwardly and downwardly. These flat surfaces provide a sound base for preloading the rollers 46 as expressed above and also have the tendency of preventing rotation of the piston body 24 with respect to the cylinder body 13.
  • the rollers 46 may be made cylindrical or they may be provided with a convex curvature as illustrated
  • a bracket 52 is secured by screws 53 to the cylinder body 13, the bracket 52 carrying a bar 54 having a key 55 received in a keyway 56 formed in the ram extension 27 of the piston body 24.
  • the key 55 and the keyway 56 operate to prevent rotation of the piston body with respect to the cylinder body as the piston body is longitudinally moved in the accurately guided manner discussed above.
  • the piston extension 26 of the piston body 24 may be similarly guided by rollers although it may be guided by a bushing 58 carried by the piston extension 26 and closely engaging the cylinder 23 of the cylinder body l3. Whether rollers or the bushing 58 are utilized is dependent upon the degree of guiding accuracy desired.
  • the piston body 24 is accurately guided at its ends in its longitudinal movement in the cylinder body l3, the piston body 24 being raised by hydraulic pressure supplied below the piston 25 and being lowered by its own weight as the hydraulic pressure permits.
  • the ram extension 27 at the upper end of the piston body 24 can of itself form the hydraulically movable platen of the press so that the need for separate platens and guide means for such separate platens is eliminated.
  • the ram extension 27 itself may form the platen or a platen may be rigidly secured thereto by means of bolts or the like.
  • the cylinder 22 of large diameter may comprise a 7 l 86 inch diameter bore and the cylinder 23 of small diameter may comprise a 25% inch diameter bore, and the piston body 24 may be 95 inches long, with the piston 25 being 13 inches long and the ram extension 27 being 47 inches long.
  • the ram extension may have a diameter of 50 inches and the piston body 24 may have a stroke of inches with a shut height of 54 inches.
  • the rollers 46 may have a diameter of 7 inches, they being heavy duty rollers having a maximum static capacity of 28,860 pounds and a basic dynamic capacity of 75,380 pounds to provide maximum guiding accuracy with zero clearance with hydraulic pressures in the range of 80 tons or so.
  • a hydraulic cylinder apparatus for a hydraulic press which also effectively provides the hydraulically movable platen of the press comprising, a hollow hydraulic cylinder body open at one end and closed at the other end and having a cylinder of large diameter at the open end and a cylinder of small diameter at the closed end communicating with the cylinder of large diameter substantially midway between the ends of the cylinder body, a piston body longitudinally movably received in the cylinder body and having intermediate its ends a piston of large diameter in the large diameter cylinder.
  • a piston extension of small diameter extending toward the closed end of the cylinder body in the small diameter cylinder, and a ram extension of intermediate diameter extending through the open end of the cylinder body and effectively providing the hydraulically movable platen of the hydraulic press, hydraulic packing carried by the piston of large diameter and engaging the cylinder of large diameter for hydraulically sealing the piston body in the cylinder body, guide means between the cylinder of small diameter and the piston extension for guiding longitudinal movement of this end of the piston body, and guide means between the cylinder of large diameter and the ram extension for guiding longitudinal movement of this end of the piston body.
  • the hydraulic cylinder apparatus as defined in claim I including a keyway longitudinally arranged in the piston body and a key carried by the cylinder body engaging in said keyway to prevent rotation of the piston body with respect to the cylinder body.
  • a hydraulic cylinder apparatus as defined in claim 4 including a shouldered bushing on the piston of large diameter on one side of the hydraulic packing with the shoulder thereof engaging a shoulder on the piston, a shouldered bushing on the piston of large diameter on the other side of the hydraulic packing with the shoulder thereof facing the ram extension, and a retainer ring about the ram extension secured to the piston of large diameter and engaging the shoulder on the last mentioned shouldered bushing for retaining the bushings and the hydraulic packing in place on the piston of large diameter.
  • said guide means between the cylinder of large diameter and the ram extension includes a plurality of circumferentially spaced brackets carried by the cylinder body and having cam members extending into the cylinder of large diameter, a plurality of roller supports having cam members extending into the cylinder and engaging the cam members of the brackets, means for adjustably positioning the roller supports on the brackets to cause the cam members to adjustably radially position the roller supports, and a plurality of rollers carried by the roller supports between the cylinder of large diameter and the ram extension and engaging the ram exten- S10.
  • a hydraulic cylinder apparatus as defined in claim 7 including a shouldered bushing on the piston of large diameter on one side of the hydraulic packing with the shoulder thereof engaging a shoulder on the pis on, a shouldered bushing on the piston of large diameter on the other side of the hydraulic packing with the shoulder thereof facing the ram extension, and a retainer ring about the ram extension secured to the piston of large diameter and engaging the shoulder on the last mentioned shouldered bushing for retaining the bushings and the hydraulic packing in place on the piston of large diameter.
  • a hydraulic cylinder apparatus as defined in claim I ineluding a shouldered bushing on the piston of large diameter on one side of the hydraulic packing with the shoulder thereof engaging a shoulder on the piston, a shouldered bushing on

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Press Drives And Press Lines (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Actuator (AREA)
US832195A 1969-06-11 1969-06-11 Hydraulic cylinder apparatus Expired - Lifetime US3592131A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US83219569A 1969-06-11 1969-06-11

Publications (1)

Publication Number Publication Date
US3592131A true US3592131A (en) 1971-07-13

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ID=25260950

Family Applications (1)

Application Number Title Priority Date Filing Date
US832195A Expired - Lifetime US3592131A (en) 1969-06-11 1969-06-11 Hydraulic cylinder apparatus

Country Status (7)

Country Link
US (1) US3592131A (de)
JP (1) JPS5031985B1 (de)
BE (1) BE751389A (de)
DE (1) DE2020507A1 (de)
FR (1) FR2045977A1 (de)
GB (1) GB1312477A (de)
SE (1) SE362606B (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3777539A (en) * 1970-11-20 1973-12-11 Schloemann Ag Forging press
US4009887A (en) * 1975-12-31 1977-03-01 Dravo Corporation Hydraulic press seal
US4028017A (en) * 1976-03-26 1977-06-07 Kobiske Industries, Inc. Manure pump having agitator piston
US4455932A (en) * 1983-03-25 1984-06-26 Verson Allsteel Press Company Hydraulic cylinder apparatus
US4829880A (en) * 1987-08-11 1989-05-16 Adams Rite Products, Inc. Fluid powered linear slide
US4898080A (en) * 1987-08-11 1990-02-06 Lieberman Walter G Fluid powered linear slide
US5134892A (en) * 1990-09-27 1992-08-04 International Flavors & Fragrances Inc. Electronic insect repellency and attractancy tester
US5303638A (en) * 1993-02-26 1994-04-19 Green Joseph H Rodless piston and cylinder assembly for a reciprocating carriage
US5950790A (en) * 1997-11-11 1999-09-14 Barber; Steven C. Linear stopping and positioning apparatus
US6250216B1 (en) 1999-03-19 2001-06-26 The Minster Machine Company Press deflection controller and method of controlling press deflection

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2630680A1 (fr) * 1988-04-29 1989-11-03 Ghesquiere Robert Dispositif de compression, notamment presse a balles, equipe d'un piston a guidage ameliore

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US817381A (en) * 1905-09-08 1906-04-10 Charles I Matson Amusement apparatus.
US996693A (en) * 1901-06-12 1911-07-04 Samuel J Webb Hydraulic press.
DE656579C (de) * 1935-09-27 1938-02-09 Wilhelm Groetzinger Hydraulische Presse
US2550601A (en) * 1948-12-11 1951-04-24 Betty Christensen Fluid pressure actuating device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US996693A (en) * 1901-06-12 1911-07-04 Samuel J Webb Hydraulic press.
US817381A (en) * 1905-09-08 1906-04-10 Charles I Matson Amusement apparatus.
DE656579C (de) * 1935-09-27 1938-02-09 Wilhelm Groetzinger Hydraulische Presse
US2550601A (en) * 1948-12-11 1951-04-24 Betty Christensen Fluid pressure actuating device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3777539A (en) * 1970-11-20 1973-12-11 Schloemann Ag Forging press
US4009887A (en) * 1975-12-31 1977-03-01 Dravo Corporation Hydraulic press seal
US4028017A (en) * 1976-03-26 1977-06-07 Kobiske Industries, Inc. Manure pump having agitator piston
US4455932A (en) * 1983-03-25 1984-06-26 Verson Allsteel Press Company Hydraulic cylinder apparatus
US4829880A (en) * 1987-08-11 1989-05-16 Adams Rite Products, Inc. Fluid powered linear slide
US4898080A (en) * 1987-08-11 1990-02-06 Lieberman Walter G Fluid powered linear slide
US5134892A (en) * 1990-09-27 1992-08-04 International Flavors & Fragrances Inc. Electronic insect repellency and attractancy tester
US5303638A (en) * 1993-02-26 1994-04-19 Green Joseph H Rodless piston and cylinder assembly for a reciprocating carriage
US5950790A (en) * 1997-11-11 1999-09-14 Barber; Steven C. Linear stopping and positioning apparatus
US6397728B1 (en) 1997-11-11 2002-06-04 Steven C. Barber Linear stopping and positioning apparatus
US6250216B1 (en) 1999-03-19 2001-06-26 The Minster Machine Company Press deflection controller and method of controlling press deflection

Also Published As

Publication number Publication date
FR2045977A1 (de) 1971-03-05
DE2020507A1 (de) 1970-12-23
GB1312477A (en) 1973-04-04
JPS5031985B1 (de) 1975-10-16
BE751389A (de) 1970-11-16
SE362606B (de) 1973-12-17

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Legal Events

Date Code Title Description
AS Assignment

Owner name: MARINE MIDLAND BANK(DELAWARE), NATIONAL ASSOCIATIO

Free format text: SECURITY INTEREST;ASSIGNOR:VERSON ALLSTEEL PRESS COMPANY, A CORP. OF DE.;REEL/FRAME:004456/0692

Effective date: 19850717

AS Assignment

Owner name: VERSON ALLSTEEL PRESS COMPANY, A CORP OF DE.

Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:MARINE MIDLAND BANK (DELAWARE) NATIONAL ASSOCIATION;REEL/FRAME:004553/0104

Effective date: 19860509

AS Assignment

Owner name: CONTINENTAL BANK N.A. AS AGENT

Free format text: SECURITY INTEREST;ASSIGNOR:ALLIED PRODUCTS CORPORATION, A DE CORP.;REEL/FRAME:005270/0416

Effective date: 19891215

AS Assignment

Owner name: ALLIED PRODUCTS CORPORATION, ILLINOIS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:VERSON ALLSTEEL PRESS COMPANY;REEL/FRAME:005238/0445

Effective date: 19900125

AS Assignment

Owner name: ALLIED PRODUCTS CORPORATION, A CORP. OF DELAWARE

Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:CONTINENTAL BANK N.A.;REEL/FRAME:005635/0117

Effective date: 19900124

Owner name: CONTINENTAL BANK N.A., ILLINOIS

Free format text: SECURITY INTEREST;ASSIGNOR:ALLIED PRODUCTS CORPORATION;REEL/FRAME:005748/0940

Effective date: 19900124