FR2331701A1 - Workpiece telescopic feed and holding mechanism - has main cylinder and piston assembly with auxiliary piston in hollow piston rod - Google Patents

Workpiece telescopic feed and holding mechanism - has main cylinder and piston assembly with auxiliary piston in hollow piston rod

Info

Publication number
FR2331701A1
FR2331701A1 FR7633963A FR7633963A FR2331701A1 FR 2331701 A1 FR2331701 A1 FR 2331701A1 FR 7633963 A FR7633963 A FR 7633963A FR 7633963 A FR7633963 A FR 7633963A FR 2331701 A1 FR2331701 A1 FR 2331701A1
Authority
FR
France
Prior art keywords
piston
piston rod
cylinder
main cylinder
holding mechanism
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.)
Withdrawn
Application number
FR7633963A
Other languages
French (fr)
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.)
HARDING CROSWELLER Ltd
Original Assignee
HARDING CROSWELLER Ltd
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 HARDING CROSWELLER Ltd filed Critical HARDING CROSWELLER Ltd
Publication of FR2331701A1 publication Critical patent/FR2331701A1/en
Withdrawn legal-status Critical Current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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/204—Control means for piston speed or actuating force without external control, e.g. control valve inside the piston

Landscapes

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

Abstract

The mechanism operates with low initial pressures and the final high pressures are applied shortly before the assembly reaches the operating position. A main cylinder has provided with inlet and outlet ports (12, 13) for connection to a hydraulic supply. The main piston (15) has seals (16) and the piston rod extends away from the cylinder head. The piston rod is hollow and forms a cylinder contg. an auxiliary piston which has a central channel and is sealed-off against the cylinder. The piston has radial openings (29).
FR7633963A 1975-11-12 1976-11-10 Workpiece telescopic feed and holding mechanism - has main cylinder and piston assembly with auxiliary piston in hollow piston rod Withdrawn FR2331701A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4665675 1975-11-12

Publications (1)

Publication Number Publication Date
FR2331701A1 true FR2331701A1 (en) 1977-06-10

Family

ID=10442090

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7633963A Withdrawn FR2331701A1 (en) 1975-11-12 1976-11-10 Workpiece telescopic feed and holding mechanism - has main cylinder and piston assembly with auxiliary piston in hollow piston rod

Country Status (3)

Country Link
DE (1) DE2650683A1 (en)
FR (1) FR2331701A1 (en)
IT (1) IT1073133B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0728557A1 (en) * 1995-02-24 1996-08-28 Automobiles Peugeot Method and device for press-fitting a workpiece in a lodging of a receiving workpiece

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3527155A1 (en) * 1985-07-30 1987-02-12 Festo Kg FEED DEVICE
US4899642A (en) * 1988-10-13 1990-02-13 Hwang Chrang Chuan Pneumatic combined with hydraulic brake chamber

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0728557A1 (en) * 1995-02-24 1996-08-28 Automobiles Peugeot Method and device for press-fitting a workpiece in a lodging of a receiving workpiece
FR2730946A1 (en) * 1995-02-24 1996-08-30 Peugeot DEVICE FOR PLUGGING A ROOM INTO A RECEIVING ROOM HOUSING

Also Published As

Publication number Publication date
DE2650683A1 (en) 1977-05-26
IT1073133B (en) 1985-04-13

Similar Documents

Publication Publication Date Title
ES319601A1 (en) Improvements in the valves of rapid purge for hydraulic gases, especially for hydraulic catches of circuit breaker. (Machine-translation by Google Translate, not legally binding)
ES439651A1 (en) Pneumatic system including auxiliary output
GB1036498A (en) Fluid power cylinder
GB1255464A (en) Apparatus for controlling the operation of a workpiece clamping mechanism of a rotatable working spindle of a machine tool
FR2331701A1 (en) Workpiece telescopic feed and holding mechanism - has main cylinder and piston assembly with auxiliary piston in hollow piston rod
GB1484515A (en) Crimping apparatus
ES8406333A1 (en) Rack-and-pinion servosteering device
ES374955A1 (en) Method and apparatus for controlling the expansion and retraction of a telescopic cylinder assembly
GB1456316A (en) Rotary jacks in particular for the control of the chucks of machine tools
GB1090392A (en) Improvements in or relating to fluid actuated reciprocating pumps
IT1218214B (en) Pressure regulation hydraulic valve with electric drive
GB909764A (en) Fluid-pressure-operated motors
FR2361562A1 (en) High-speed piston driving mechanism - has annular piston sliding on secondary piston rod connected to pressure supply
GB1027121A (en) Clamping apparatus
GB1022475A (en) Improvements in or relating to hydraulic control means
FR2303978A1 (en) Hydraulically operated ram - with passages in piston rod for fluid to downstream receiver
GB1151775A (en) Resistance Welding Equipment.
GB1236444A (en) Fluid actuated valve
GB1133103A (en) Improvements in or relating to tube bending machines
GB953738A (en) Control slide valve
GB1148398A (en) Improvements relating to fluid-pressure-operated piston and cylinder devices
ES347527A1 (en) Improvements in or relating to Fluid Pressure Transmission Means for Use on Machine-tool Heads
JPS53135003A (en) Controlling apparatus for swash plate type axial pumps
GB1343535A (en) Apparatus for generating impulsive pressure in a liquid
ES324920A1 (en) A cylinder of autointensification of pressure. (Machine-translation by Google Translate, not legally binding)

Legal Events

Date Code Title Description
ST Notification of lapse