GB1212037A - Hydraulic device for the control of oil pressure clamping pistons - Google Patents

Hydraulic device for the control of oil pressure clamping pistons

Info

Publication number
GB1212037A
GB1212037A GB26468/68A GB2646868A GB1212037A GB 1212037 A GB1212037 A GB 1212037A GB 26468/68 A GB26468/68 A GB 26468/68A GB 2646868 A GB2646868 A GB 2646868A GB 1212037 A GB1212037 A GB 1212037A
Authority
GB
United Kingdom
Prior art keywords
plunger
chamber
bore
oil
pressure
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
Application number
GB26468/68A
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.)
WILHELMSBURGER MASCHINENFABRIK HINRICHS AND SOHN
Original Assignee
WILHELMSBURGER MASCHINENFABRIK HINRICHS AND SOHN
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 WILHELMSBURGER MASCHINENFABRIK HINRICHS AND SOHN filed Critical WILHELMSBURGER MASCHINENFABRIK HINRICHS AND SOHN
Publication of GB1212037A publication Critical patent/GB1212037A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D33/00—Accessories for shearing machines or shearing devices
    • B23D33/08—Press-pads; Counter-bases; Hold-down devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20538—Type of pump constant capacity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50518—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5151—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and a directional control valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/57—Control of a differential pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/566—Interrelated tool actuating means and means to actuate work immobilizer
    • Y10T83/5669—Work clamp
    • Y10T83/5787—Clamp driven by yieldable means
    • Y10T83/5805—Fluid pressure yieldable drive means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/748—With work immobilizer
    • Y10T83/7487—Means to clamp work
    • Y10T83/7547—Liquid pressure actuating means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Shearing Machines (AREA)

Abstract

1,212,037. Reciprocating pumps. WILELMSBURGER MASCHINENFABRIK HINRICHS & SOHN. June 4, 1968 [June 6,1967], No. 26468/68. Heading F1A [Also in Division B3] A vertically reciprocated guillotine shear blade 40 Fig. 2 for cutting a metal plate 37 is pivoted at 42 to the face end of a rod 41 secured to an eccentric disc 45 driven by a shaft 8 and the plate 37 is held champed against a table 38 just before and during cutting by spring-returned hydraulic pistons 35 Fig. 1 subjected to oil pressure delivered by a pump plunger 4 connected by a gudgeon pin 5, connecting rod 6 and an eccentric disc 7 to said drive shaft 8; the plunger 4 being invented cup-shaped and slidable within a cylinder 3 and over a fixed inner inverted cup-shaped plunger 14 so as to provide an annular low pressure oil chamber 19 and a high pressure chamber 15 connected together by a pressure equalizing bore 18 in the wall of plunger 14 and at a level above the lower edge of plunger 4 at b. d. c. position whereby the high pressure in chamber 15 is maintained during the initial part of the intake stroke of plunger 4. The disc 7 is in advance of disc 45 so that the plate 37 is champed prior to cutting. During the initial part of the delivery stroke of plunger 4 oil is forced from a chamber 12 past a valve 17 to chamber 15 and into a duct 34 leading to pistons 35 at low pressure since bore 18 is open as is a second bore 20 in the cylinder wall. When bore 22 is closed by plunger 4 oil is formed from chamber 19 through bore 18 to chamber 15 and also past a valve 28 to chamber 15 and duct 34 to depress pistons 35 to a position where they abut the plate 37. When bore 18 is closed further downward movement of plunger 4 pressurizes the oil in chamber 15 and duct 34 so as to lift to a height "h" an adjustable combined pressure relief and storage valve 31 which controls a by-pass 30; the high-pressure oil in the chamber 46 of valve 31 being maintained until is relieved through bore 18 when uncovered by the returning plunger 4.
GB26468/68A 1967-06-06 1968-06-04 Hydraulic device for the control of oil pressure clamping pistons Expired GB1212037A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW0044121 1967-06-06

Publications (1)

Publication Number Publication Date
GB1212037A true GB1212037A (en) 1970-11-11

Family

ID=7603936

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26468/68A Expired GB1212037A (en) 1967-06-06 1968-06-04 Hydraulic device for the control of oil pressure clamping pistons

Country Status (3)

Country Link
US (1) US3532017A (en)
DE (1) DE1627324B1 (en)
GB (1) GB1212037A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2609916A1 (en) * 1976-03-10 1977-09-15 Etscheid Ohg Hermann HOLD-DOWN DEVICE ON A DEEP DRAWING PRESS
DE3645241C2 (en) * 1985-05-08 2000-05-25 Amada Co Sheet metal working device esp. cutter
CN112525287A (en) * 2020-11-02 2021-03-19 上海旖琥环境工程技术发展有限公司 Water level detection device of transformer substation

Also Published As

Publication number Publication date
DE1627324B1 (en) 1970-12-10
US3532017A (en) 1970-10-06

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees