GB862090A - Hydraulic cylinder unit - Google Patents

Hydraulic cylinder unit

Info

Publication number
GB862090A
GB862090A GB26666/57A GB2666657A GB862090A GB 862090 A GB862090 A GB 862090A GB 26666/57 A GB26666/57 A GB 26666/57A GB 2666657 A GB2666657 A GB 2666657A GB 862090 A GB862090 A GB 862090A
Authority
GB
United Kingdom
Prior art keywords
piston
ports
fluid
space
line
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
GB26666/57A
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
Publication of GB862090A publication Critical patent/GB862090A/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
    • F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
    • F15B11/032—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force by means of fluid-pressure converters
    • F15B11/0325—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force by means of fluid-pressure converters the fluid-pressure converter increasing the working force after an approach stroke
    • 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
    • F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
    • F15B2211/214—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being hydrotransformers
    • 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting output members
    • 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/775—Combined control, e.g. control of speed and force for providing a high speed approach stroke with low force followed by a low speed working stroke with high force, e.g. for a hydraulic press

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Actuator (AREA)

Abstract

862,090. Hydraulic power units. GLAS, M. Aug. 23, 1957 [Aug. 23, 1956], No. 26666/57. Class 69 (2). An hydraulic unit providing rapid-feed, compression and return strokes using only half the usual amount of fluid, consists of a piston rod 4 with a large piston 36 in a main cylinder 26 and a small piston 19 in a rapid-feed cylinder 22. Fluid is fed via ports 1, 42. 43 to space 12<SP>1</SP> and pushes piston 19 downwards, fluid displaced from below piston 36 flowing via lines 10<SP>1</SP>, 6, 10 to space 7. When tool on end 4<SP>11</SP> of piston rod comes into contact with the workpiece and the pistons stop, fluid flows via ports 1 and 42, line 2 and ports 8 and 9 to push a pressure-transmitting piston 18 downwards to block line 10 and initiate the compression stroke, while fluid from space 17 escapes via ports 49, 48, line 45 and ports 47, 13. The fluid from below piston 36 now flows via lines 11<SP>1</SP> and 11 to space 12 where it and fluid displaced by piston 19 is exhausted via port 48, line 45 and ports 47, 13. At the end of the stroke, inlet and outlet ports 1, 13 are reversed (by undisclosed means). Fluid forces piston 18 upwards and as soon as ports 10 are cleared the rapid return stroke begins. In a modification, the end 4<SP>11</SP> of the piston rod has a sleeve 32 surrounding it actuated by a piston 29 in a cylinder inside a modified large piston 36b. The piston precedes the rod 4<SP>11</SP>, e.g. in order to hold down material to be riveted before the riveting operation begins.
GB26666/57A 1956-08-23 1957-08-23 Hydraulic cylinder unit Expired GB862090A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE862090X 1956-08-23

Publications (1)

Publication Number Publication Date
GB862090A true GB862090A (en) 1961-03-01

Family

ID=6797132

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26666/57A Expired GB862090A (en) 1956-08-23 1957-08-23 Hydraulic cylinder unit

Country Status (1)

Country Link
GB (1) GB862090A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1258592B (en) * 1962-09-14 1968-01-11 Sommer Fritz Quick lock cylinder
DE1579033B1 (en) * 1962-09-11 1971-05-27 Hans Stuedli Hydraulic press, especially mold clamping device for injection molding machines
EP0501384A2 (en) * 1991-02-28 1992-09-02 Carlo Brasca Combined pneumatic-hydraulic press with controlled stroke

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1579033B1 (en) * 1962-09-11 1971-05-27 Hans Stuedli Hydraulic press, especially mold clamping device for injection molding machines
DE1258592B (en) * 1962-09-14 1968-01-11 Sommer Fritz Quick lock cylinder
EP0501384A2 (en) * 1991-02-28 1992-09-02 Carlo Brasca Combined pneumatic-hydraulic press with controlled stroke
EP0501384A3 (en) * 1991-02-28 1992-12-02 Carlo Brasca Combined pneumatic-hydraulic press with controlled stroke
US5247870A (en) * 1991-02-28 1993-09-28 Carlo Brasca Combined pneumatic-hydraulic press with controlled stroke

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