FR2111268A5 - Jaws for stretch leveller - uses opposed cylinders normal to work surface - Google Patents

Jaws for stretch leveller - uses opposed cylinders normal to work surface

Info

Publication number
FR2111268A5
FR2111268A5 FR7136625A FR7136625A FR2111268A5 FR 2111268 A5 FR2111268 A5 FR 2111268A5 FR 7136625 A FR7136625 A FR 7136625A FR 7136625 A FR7136625 A FR 7136625A FR 2111268 A5 FR2111268 A5 FR 2111268A5
Authority
FR
France
Prior art keywords
jaws
work surface
opposed cylinders
stretch
uses opposed
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
FR7136625A
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.)
DEMAG HYDRAULIK GmbH
Original Assignee
DEMAG HYDRAULIK GmbH
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 DEMAG HYDRAULIK GmbH filed Critical DEMAG HYDRAULIK GmbH
Application granted granted Critical
Publication of FR2111268A5 publication Critical patent/FR2111268A5/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/27—Carriages; Drives
    • B21C1/28—Carriages; Connections of grippers thereto; Grippers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

Instead of using sliding wedges to grip the ends of plates and sections for stretch levelling, two opposed hydraulic cylinders at right angles to the surface of the plate are used. The force employed is sufficient to straighten or level the end of the plate/section being gripped, and the pressure in the gripping circuit is matched to that in the pulling circuit, so that the ratio of pulling force to clamping force is always 1:1.5. There is thus no tendency for the workpiece to pull out of the grippers.
FR7136625A 1970-10-13 1971-10-12 Jaws for stretch leveller - uses opposed cylinders normal to work surface Expired FR2111268A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702050208 DE2050208A1 (en) 1970-10-13 1970-10-13 Clamping device for sheet or profile stretchers

Publications (1)

Publication Number Publication Date
FR2111268A5 true FR2111268A5 (en) 1972-06-02

Family

ID=5784982

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7136625A Expired FR2111268A5 (en) 1970-10-13 1971-10-12 Jaws for stretch leveller - uses opposed cylinders normal to work surface

Country Status (2)

Country Link
DE (1) DE2050208A1 (en)
FR (1) FR2111268A5 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019201372A1 (en) * 2019-02-04 2020-08-06 Sms Group Gmbh Electro-hydraulic pull jaw control

Also Published As

Publication number Publication date
DE2050208A1 (en) 1972-04-20

Similar Documents

Publication Publication Date Title
GB1288691A (en)
GB1379680A (en) Line gripping devices
FR2111268A5 (en) Jaws for stretch leveller - uses opposed cylinders normal to work surface
US1708979A (en) Cable clamp
FR2309054A1 (en) Securing clamp for electrical cables - has three jaws which are forced inwards onto cable by two bolts in order to grip firmly onto cable
JPS57184523A (en) Gripping device for straining sheet or plate with stretcher
GB1098544A (en) Building block lifter
GB1055268A (en) Improvements in clamping brackets
GB265357A (en) Improved hand operated safety grip for securing hoisting ropes
GB231230A (en) Improved clamp for structural tubes, bars, and the like
GB1406166A (en) Clamp
GB1201749A (en) Improvements in or relating to lifting clamps
GB1192659A (en) Method of Gripping Uneven Plates and Sheets and Plates and Sheets of Non-Uniform Thickness in a Stretching and Straightening Machine, and Apparatus for Carrying Out the Method
GB522595A (en) Improvements relating to work grips for use in machine tools and other apparatus
FR2401715A1 (en) Twisting machine for flat iron bars - has V-jaw clamping chuck used for large variety of sections
GB894421A (en) Improvements in vices
FR2045105A5 (en) Tube vice for forming pipe sockets
US1666079A (en) Clamp
GB1323294A (en) Clamp
GB1328363A (en) Chucking gauge for three-jaw chucks in machine tools
SU726005A1 (en) Load-engaging device
FR2024435A1 (en) Controlling linear pressure of paste press - rollers for asbestos cement
GB735013A (en) Improvements in or relating to auxiliary jaws for vices
FR2442363A1 (en) Locking and unlocking sliding clamp on column - utilises hydraulic jack to release pressure on clamp bolts, esp. for materials testing machine
GB552251A (en) Improvements in or relating to a work piece holding or clamping jaw

Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse