US3797298A - Vertical hydraulic press - Google Patents

Vertical hydraulic press Download PDF

Info

Publication number
US3797298A
US3797298A US00227421A US3797298DA US3797298A US 3797298 A US3797298 A US 3797298A US 00227421 A US00227421 A US 00227421A US 3797298D A US3797298D A US 3797298DA US 3797298 A US3797298 A US 3797298A
Authority
US
United States
Prior art keywords
cross
movable
press
columns
plate
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
Application number
US00227421A
Other languages
English (en)
Inventor
P Malkov
P Pylaikin
B Rozanov
V Sinitsky
S Khirdzhiev
N Grebnev
L Efimov
G Zakharov
M Kavitsky
V Vasilkovsky
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3797298A publication Critical patent/US3797298A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/02—Special design or construction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/10—Drives for forging presses
    • B21J9/12—Drives for forging presses operated by hydraulic or liquid pressure

Definitions

  • the present invention may find use in the designs of forging and, mainly, powerful stamping presses having press structures of high rigidity and which manufacture stamped articles with high precision.
  • a vertical hydraulic press comprising a frame resisting the operating force of the press and consisting of upper and lower fixed crossbooms and columns. Secured to the upper cross-boom are working cylinders which are provided with plungers connected with a movable cross-piece and transmitting therethrough the operating force to a movable tool. The press is also provided with return cylinders used for raising the movable cross-piece.
  • the movable cross-piece moves along the columns, whereby the bending moment arising during the eccentric loading of the press is transmitted to the columns; this results in additional skewing of the movable crosspiece and greater stress in the columns.
  • the operating force transmitted to the movable cross-piece through the plungers of the working cylinders and the tool causes the bending strain of the cross-piece.
  • the decreased rigidity of the press frame, skew ing and bending of the movable cross-piece reduce the precision of manufacture of stamped articles.
  • the presses are equipped with complicated automatic levelling-off systems.
  • Another object of the present invention is to provide a press in which the bending strain of the movable cross-piece taking placevin the zone of the tool disposition would be eliminated.
  • Still another object of the present invention is to provide a press in which the precision of the movable cross-piece displacement, as compared to that in conventional presses of the same type, would be higher.
  • the plate In order to decrease the length of the column and make it simpler to assemble the press, the plate has, two rows of columns rigidly secured therein, of which rows one connects the plate with the upper fixed cross-boom and the other one with the lower fixed cross-boom.
  • the latter are designed as wedges provided with a slot.
  • FIG. 1 shows a general view of the press
  • FIG. 2 shows a section taken along line II-II of FIG.
  • FIG. 2A shows a magnified section of the press shown in FIG. 2, showing the guides for the slide and their means of adjustment.
  • FIG. 3 shows a section taken along line III-III of FIG. 2.
  • a vertical hydraulic press comprises a frame which consists of a lower fixed cross-boom 1 (FIG. 1), an upperfixed cross-boom 2, a plate 3 and columns with nuts 4. Besides, the press comprises working cylinders 5 with plungers 6, return cylinders 7, a movable crosspiece 8 connected with a slide 9 (FIG. 2), a sliding table 10. (FIG. 1), cylinders 11 for moving the table,
  • the main component of the press is the frame that resists the force-necessary for deforming the workpiece (not shown in the drawing) and developed by the working cylinders 5 when a high-pressure working liquid is supplied thereinto.
  • the frame has the lower and upper fixed cross-booms 1 and 2 designated, respectively, at the plate 3 disposed between the latter and the col umns.
  • the ends of the columns are provided with threadings which with the aid of the nuts 4 provide for arigid connection of the column with the cross-booms 1,2 and the plate 3.
  • the columns are divided along their length into two rows. Columns 16 ,of one row connect the plate 3 withthe lower fixed cross-boom l and determine, in the long row connect the plate 3 with the upper fixed crossboom 2.
  • the lower fixed cross-boom 1 is mounted on the supports 13 secured in a foundation 18 and carries the sliding table which mounts either directly or through the intermediary of a set of compression plates the tool 14 (the lower die) which is motionless in the course of stamping.
  • the table 10 With the aid of the cylinders 11 specially provided for the purpose and mounted on the foundation 18 the table 10 can be moved to both sides from the axis of the press onto bridges 19 which by one end portion are connected with the lower fixed cross-boom l and by the other end portion rest upon the foundation 18.
  • Secured to the bridges 19 are pushers 12 designed to raise the article above the die.
  • the working cylinders 5 are made as drums 20 (FIGS. 3) having inserted bottoms 21 secured thereto.
  • the space between the drums 20 and the bottoms 21 is packed with the aid of heringbone sealings (not shown in the drawing).
  • the inserted bottoms 21 of the working cylinders 5 rest upon the upper fixed cross-boom 2 and are secured thereto.
  • the plungers 6 of the working cylinders 5 rest upon the movable cross-piece 8 and transmit the operating force to the latter. From the cross-piece 8 the operating force is transmitted through the slide 9 connected thereto to the movable tool (the upper die) which is mounted on the slide 9, the latter may be made integral with the cross-piece. Employment of the slide 9 completely eliminates the bending strain in the zone of the tool fixture.
  • the slide 9 moves in the guides 22 (FIG. 2) which are mounted on the plate 3 in a central hole made in the latter.
  • the guides 22 are made as wedges which with the aid of adjusting screws 25 can bedisplaced in the direction perpendicular to the movement of the slide 9, which makes it possible to set up most favourable clearances both from the viewpoint of the slide movement and from the viewpoint of its possible skewing.
  • the guides 22 are provided with slots 23 (FIGS. 3) by means of which they are connected with the plate 3.
  • the upper and lower fixed cross-booms l, 2, the plate 3 and the movable crosspiece 8 with the slide 9 may consist of several parts. These composite parts are rigidly interconnected with the aid of coupling pins and keys.
  • the plate 3 mounts the return cylinders 7 whose plungers 24 (FIG. 3) are connected with the movable cross-piece 8.
  • the press may be equipped with side breaching devices (not shown in the drawing)l
  • the press according to the present invention functions as follows. With a workpiece (not shown in the drawings) to be processed disposed on the fixed tool 14,- under the action of the low-pressure working liquid and the weight of the press movable parts (the plungers 6, the movable cross-piece 8 with the slide 9, the movable tool 15) the movable cross-piece 8 with the movable tool 15 secured on the slide 9 performs an idle motion until the movable tool 15 contacts the workpiece.
  • the return cylinders 7 brings the movable parts of the press to their initial position by forcing the working liquid out of the spaces of the cylinders 5.
  • the table 10 is moved by the cylinders 10 from under the press to the bridge 19, while the pusher 12 raises the article above the unit of the fixed tool 14 to be subsequently transported.
  • the press may be provided with a central pusher, in which case the pushing operation may be effected without displacing the table 10.
  • the design of the press according to the present invention makes it possible to increase the rigidity of the frame of the press due to the smaller length of the columns; to decrease the skewing of the movable tool in thecase of eccentric application of the loading owing to the rigid displacement of the slide; to preclude transfer of bending moments arising in the case of skewing of the movable cross-piece to the columns; to eliminate the effect exerted on the movable tool by the bending strain of the movable cross-piece, and, as a result of all this, to raise the precision of manufacture of stamped articles by the press.
  • a vertical hydraulic press providing an operating force and comprising: 1
  • said frame means consisting of upper and lower fixed cross-booms and columns;
  • a plate disposed between said upper and lower fixed cross-booms, rigidly connected therewith by means of said columns and carrying said return cylinders, said plate having a central hole.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Forging (AREA)
  • Presses And Accessory Devices Thereof (AREA)
US00227421A 1971-03-17 1972-02-18 Vertical hydraulic press Expired - Lifetime US3797298A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU711628325A SU341290A1 (ru) 1971-03-17 1971-03-17 Вертикальный гидравлический пресс

Publications (1)

Publication Number Publication Date
US3797298A true US3797298A (en) 1974-03-19

Family

ID=20467505

Family Applications (1)

Application Number Title Priority Date Filing Date
US00227421A Expired - Lifetime US3797298A (en) 1971-03-17 1972-02-18 Vertical hydraulic press

Country Status (5)

Country Link
US (1) US3797298A (ja)
JP (1) JPS5310310B2 (ja)
DE (1) DE2210795C3 (ja)
GB (1) GB1359905A (ja)
SU (1) SU341290A1 (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4947673A (en) * 1989-04-13 1990-08-14 Connell Limited Partnership Removable slide presses
US6178804B1 (en) * 1999-07-09 2001-01-30 Fwu-Shing Juang Top die raising and lowering guide mechanism for punching, pressing, and shearing machines
CN106903254A (zh) * 2017-04-24 2017-06-30 湖南巨峰科技实业有限公司 一种与快锻造机配合锻造的侧面锻造装置
CN112108601A (zh) * 2020-09-08 2020-12-22 桂林理工大学 一种2000吨三梁三柱式液压机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102756064A (zh) * 2012-08-09 2012-10-31 山东义信重机制造有限公司 一种锻压机主机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2241344A (en) * 1938-07-21 1941-05-06 Curtiss Wright Corp Press loading platform
FR880540A (fr) * 1941-04-01 1943-03-29 Krupp Ag Presse
FR1065900A (fr) * 1951-11-23 1954-05-31 Hydraulik Gmbh Presse à câbles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2241344A (en) * 1938-07-21 1941-05-06 Curtiss Wright Corp Press loading platform
FR880540A (fr) * 1941-04-01 1943-03-29 Krupp Ag Presse
FR1065900A (fr) * 1951-11-23 1954-05-31 Hydraulik Gmbh Presse à câbles

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4947673A (en) * 1989-04-13 1990-08-14 Connell Limited Partnership Removable slide presses
US6178804B1 (en) * 1999-07-09 2001-01-30 Fwu-Shing Juang Top die raising and lowering guide mechanism for punching, pressing, and shearing machines
CN106903254A (zh) * 2017-04-24 2017-06-30 湖南巨峰科技实业有限公司 一种与快锻造机配合锻造的侧面锻造装置
CN106903254B (zh) * 2017-04-24 2019-08-09 湖南巨峰科技实业有限公司 一种与快锻造机配合锻造的侧面锻造装置
CN112108601A (zh) * 2020-09-08 2020-12-22 桂林理工大学 一种2000吨三梁三柱式液压机

Also Published As

Publication number Publication date
SU341290A1 (ru) 1981-12-15
DE2210795C3 (de) 1981-02-26
JPS5310310B2 (ja) 1978-04-12
JPS48102372A (ja) 1973-12-22
DE2210795B2 (de) 1980-06-12
DE2210795A1 (de) 1972-09-28
GB1359905A (en) 1974-07-17

Similar Documents

Publication Publication Date Title
US3635074A (en) Compensating system for presses
KR101189333B1 (ko) 4 다이 방식의 단조기
CN109092996B (zh) 一种防变形机械加工模具
US3024676A (en) Hydraulic presses
KR100593227B1 (ko) 유체역학적 폐쇄 장치, 특히 횡방향 압출성형용 유체역학적 폐쇄 장치
US3797298A (en) Vertical hydraulic press
US3465669A (en) Guide for the slide of a vertical press
US4850272A (en) Articulated-lever cutting and forming press
CN100484746C (zh) 非开挖钻杆加厚液压机
JPH0246995A (ja) 板材加工機
US2387190A (en) Hydraulic press
US3557600A (en) Transfer press
US3555865A (en) Forging apparatus and method
US3668920A (en) Hydraulic control system for a metal forming press
JP2540450B2 (ja) Ｃ形フレ―ム構造のプレス装置
US2809542A (en) Compensating system for presses
US3916700A (en) Machine for treating workpieces at elevated pressures, especially a high-pressure press
US4706490A (en) Forging press with yoke design for attaching tie-rods to crossheads
US3482429A (en) Hydraulic press
JPS5633145A (en) Forging device
US3577882A (en) Hydraulic forging press
US2428620A (en) Press structure
US3892122A (en) Hydraulic presses
RU2415730C1 (ru) Устройство для обработки металлов давлением
US3468155A (en) Forging press