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GB853492A - Hydraulic presses - Google Patents

Hydraulic presses

Info

Publication number
GB853492A
GB853492A GB791557A GB791557A GB853492A GB 853492 A GB853492 A GB 853492A GB 791557 A GB791557 A GB 791557A GB 791557 A GB791557 A GB 791557A GB 853492 A GB853492 A GB 853492A
Authority
GB
United Kingdom
Prior art keywords
piston
intensifier
press
cylinder
bore
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
GB791557A
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
Priority to GB791557A priority Critical patent/GB853492A/en
Publication of GB853492A publication Critical patent/GB853492A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/16—Drives for riveting machines; Transmission means therefor
    • B21J15/20—Drives for riveting machines; Transmission means therefor operated by hydraulic or liquid pressure
    • 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
    • F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids
    • 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
    • F15B2211/50—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
    • F15B2211/5153—Pressure control characterised by the connections of the pressure control means in the circuit being connected to an output member 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
    • F15B2211/55—Pressure control for limiting a pressure up to a maximum pressure, e.g. by using a pressure relief 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
    • F15B2211/70—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)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Jigs For Machine Tools (AREA)

Abstract

853,492. Hydraulic presses ; intensifiers. GLAS, M. March 11, 1957, No. 7915/57. Class 69 (2). The press piston of an hydraulic press is brought into contact with the work by liquid supplied directly to the press cylinder, and then the working pressure is obtained by an intensifier arrangement. As shown in Fig. 1, a working piston 5 is provided in a cylinder 3 separated by a partition 2 from an intensifier cylinder 4 having a differential piston 6 with a portion 10 extending through a bore in the partition. Piston 5 is brought into contact with the work by liquid supplied through passages 52, 53, 54, through a bore 11 in the intensifier piston and through a valve 13 to the underside of the piston 5. As the pressure increases, piston 6 is raised and valve 13 (which is opened by contact with a rod 14 in the lower end position of piston 6) closes, and the pressure below piston 5 is thus brought to its desired value. A return stroke is effected by supplying liquid through passages 49, 50, 51 to the space above the piston 5, liquid then exhausting from the intensifier cylinder until, in the end position of the piston 6, valve 13 is opened, whereupon liquid exhausts from the cylinder 3. In the modification of Fig. 8, the press piston 105 is retracted. into its cylinder for the working stroke. The intensifier piston 106 has a part 110 entering a bore 124<1> in the press piston, and passages 125, 127 afford communication between this bore and the upper side of the press cylinder. The operation is the same as before. In the embodiment shown in Figs. 15a, 15b, the press piston 205<1> is mounted in an annular piston 205 for clamping the work. The intensifier piston 506 has a portion 510 entering into the cylinder in which the annular piston slides, portion 510 having a bore 511 closed by a valve 513, except in the lower end position of the piston 510. This end position of the intensifier piston is determined by an adjustable stop 544. For a working stroke liquid is supplied through a port 554 to a groove 536 in the intensifier piston, and thence through passages 537 to the bore 511. A restricted passage 538 intercommunicates the groove 536 and a chamber 504a at the underside of the intensifier piston. Relief valves 541 are provided between chamber 504a and the bore 510. In a modification, the annular piston is the press piston and piston 2051 operates the clamping means ; in a further modification, an annular clamping piston works in an annular chamber provided around the rod of the press piston. In other modifications, clamping and press pistons are provided and the intensifier is the same as that shown in Fig. 1
GB791557A 1957-03-11 1957-03-11 Hydraulic presses Expired GB853492A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB791557A GB853492A (en) 1957-03-11 1957-03-11 Hydraulic presses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB791557A GB853492A (en) 1957-03-11 1957-03-11 Hydraulic presses

Publications (1)

Publication Number Publication Date
GB853492A true GB853492A (en) 1960-11-09

Family

ID=9842238

Family Applications (1)

Application Number Title Priority Date Filing Date
GB791557A Expired GB853492A (en) 1957-03-11 1957-03-11 Hydraulic presses

Country Status (1)

Country Link
GB (1) GB853492A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987002309A1 (en) * 1985-10-18 1987-04-23 Universal Engineering Development Co. Pty. Ltd. Improvements to punch presses
CN102847861A (en) * 2012-08-16 2013-01-02 天津华韵乐器有限公司 Processing method of accordion sound spring
CN103883585A (en) * 2014-04-08 2014-06-25 武汉科技大学 Self-adapting load conversion hydraulic cylinder
CN104265611A (en) * 2014-09-10 2015-01-07 沈阳大学 Hydraulic-drive diaphragm slurry pump with combined hydraulic cylinder

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987002309A1 (en) * 1985-10-18 1987-04-23 Universal Engineering Development Co. Pty. Ltd. Improvements to punch presses
CN102847861A (en) * 2012-08-16 2013-01-02 天津华韵乐器有限公司 Processing method of accordion sound spring
CN103883585A (en) * 2014-04-08 2014-06-25 武汉科技大学 Self-adapting load conversion hydraulic cylinder
CN103883585B (en) * 2014-04-08 2015-12-16 武汉科技大学 A kind of self-adapting load conversion oil hydraulic cylinder
CN104265611A (en) * 2014-09-10 2015-01-07 沈阳大学 Hydraulic-drive diaphragm slurry pump with combined hydraulic cylinder
CN104265611B (en) * 2014-09-10 2016-04-20 沈阳大学 A kind of barrier film thick fluid pump that surges of assembled hydraulic cylinder

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