US2349520A - Stretching machine jaw - Google Patents

Stretching machine jaw Download PDF

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Publication number
US2349520A
US2349520A US453921A US45392142A US2349520A US 2349520 A US2349520 A US 2349520A US 453921 A US453921 A US 453921A US 45392142 A US45392142 A US 45392142A US 2349520 A US2349520 A US 2349520A
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US
United States
Prior art keywords
jaw
sheet
stretching machine
machine jaw
machine
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 - Lifetime
Application number
US453921A
Inventor
Mose D Ripley
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.)
North American Aviation Corp
Original Assignee
North American Aviation Corp
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
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Priority to US453921A priority Critical patent/US2349520A/en
Application granted granted Critical
Publication of US2349520A publication Critical patent/US2349520A/en
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D25/00—Working sheet metal of limited length by stretching, e.g. for straightening
    • B21D25/04—Clamping arrangements
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S24/00—Buckles, buttons, clasps
    • Y10S24/26—Fluid 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
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/34—Combined diverse multipart fasteners
    • Y10T24/3427—Clasp
    • Y10T24/3439—Plural clasps

Definitions

  • My invention relates generally to a hydraulically operated machine for stretching and shaping metal sheets, and more particularly my invention relates to improvements in jaws used on such a machine.
  • Still another object is to provide a jaw for such a machine that will minimize the tearing of sheet 10 metal adjacent the jaw.
  • My invention also has for its objects to provide a jaw for such a machine that is vpositive in operation, convenient in use, easily perable to grip sheet metal and easily operable to release such is sheet metal, economical of manufacture, relatively simple and of general superiority-and serviceability.
  • the invention also comprises novel details of construction and novel combinations and arrangego ments of parts, which will more fully appear in the course of the following description.
  • the drawings merely show and the following description merely describes one embodiment of the present invention, which is given by way of illustration or example only.
  • Pig. 1 is a diagrammatic elevational view of a pair of laws mounted in relative operative positions.
  • Pig. 2 is a slightly enlarged side elevation, partly broken away, looking in the direction of arrows 1-4 of Pig. 1. r
  • Fig.3 isanenlargedsectiontakenonllne3-3 3 parallel beams comprised in the machine.
  • Mountit eduponthesebeams i,b meansoiT-headed boltslarejournalsl.
  • Jl'bodiesl werplvmmnfllem llin thelowerportionoisuchjawbodies.
  • Liners 22 and 13 are disposed upon the converging faces ll clamping plates 2' and ii. These plates have guide pins II to direct converging movement of the plates on the roller bearings.
  • Upon the faces of the plates 26 and II. are replaceable inserts ll and II.
  • the inserts II and a may be suitably knurled or roughened as suggested by the lines on member I! in Fig. 6.
  • Actuating means for moving the jaw plates 10 and 21 toward each other on the conversing series of roller bearings 24 and 25, comprise pistons Si in cylinders 82.
  • Abutments II maybe arranged on the pistons II, to engage the lower portions of the jaw plates 20 and 21, as best shown in Fig. 3.
  • An extension 34 of reduced diameter underneath the piston Ii is disposed opposite an inlet for air'pressure.
  • a flexible hose 3. is connected to the inlet 3
  • 'lleanstendingtomaintainthejawbody lIin adjusted positions comprises a helical spring 31 wolmd upon the shaft ll.
  • the spring 31 abuts te, cup-shaped annular members I. and II, causing friction between the I outer faces of the cup-shaped members and adjacent positions of the body it of the jaw member.
  • a spline ll. urged in place by a screw ll restricts rotary movement of the cup-shaped members II and 3!.
  • any suitable table means 42 may be moved vertically between oppoud jaws II, which are arranged in lines parallel with each other.
  • a metal sheet 43 has been indicated as being clamped at its ends by the jaw plates 26 and 21.
  • the jaw members may swingtoanypositicmcausingastraightpullon the metal sheet 43, when the table I! is raised forcibly against the sheet I.
  • the wavy line 44 in Fig. 1 indicates that the center portion of the sheet 48. and of the table 42 have been broken away.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Description

May 23, 1944. M. RIPLEY 2,349,520
STRETQHING MACHINE JAW Filed Aug. '7, 1942 2 Sheets-Sheet l 7%. 6? I INYENTOR.
A T'I'ORNEY y 23, 1944- M. D. RIPLEY STRETCHING MACHINE JAW Filed Aug. '7, 1942 2 Sheets-Sheet 2 INVENTOR. 772. A. BY
May 2:5, 944
A, um'rnn "STATES rxrm'romen 2340.520 8 A alliance to (lalilu a corporation of Delaware pplication August '1. 1m, 86' No. 452,921
' 1 cum. (Cl. 24-248) My invention relates generally to a hydraulically operated machine for stretching and shaping metal sheets, and more particularly my invention relates to improvements in jaws used on such a machine.
It is an object of my invention-to provide such a jaw that will grip sheet metal for a straight pull, in a variety of positions oi the jaw.
Still another object is to provide a jaw for such a machine that will minimize the tearing of sheet 10 metal adjacent the jaw.
My invention also has for its objects to provide a jaw for such a machine that is vpositive in operation, convenient in use, easily perable to grip sheet metal and easily operable to release such is sheet metal, economical of manufacture, relatively simple and of general superiority-and serviceability. The invention also comprises novel details of construction and novel combinations and arrangego ments of parts, which will more fully appear in the course of the following description. However, the drawings merely show and the following description merely describes one embodiment of the present invention, which is given by way of illustration or example only.
In the drawings, like reference characters designate similar parts in the several views.
Pig. 1 is a diagrammatic elevational view of a pair of laws mounted in relative operative positions. Pig. 2 is a slightly enlarged side elevation, partly broken away, looking in the direction of arrows 1-4 of Pig. 1. r
Fig.3isanenlargedsectiontakenonllne3-3 3 parallel beams comprised in the machine.. Mountit eduponthesebeams i,b meansoiT-headed boltslarejournalsl. Nutsilarescrewedonthe threadedendsoftheboltsl,toclampthejournals linpositlononthebeamsloi'themachine. A
washerllisshownbetwemthenutilandjour- .The Journals l have ears lli'or journaling a shaft ilparaiielwitheachofthebeamsl.
Jl'bodiesliileplvmmnfllem llin thelowerportionoisuchjawbodies. Thefuilll' endwise asainst opposi um and dotted line positions a thejaw body il, in Fig. 3, illustrate diiferent pivoted positions.
.Theinnerfacesllandfloithejawsliandll on the jaw body-ll, converge toward lips 2. and It of the jaws ll and II respectively. Liners 22 and 13 are disposed upon the converging faces ll clamping plates 2' and ii. These plates have guide pins II to direct converging movement of the plates on the roller bearings. Upon the faces of the plates 26 and II. are replaceable inserts ll and II. The inserts II and a may be suitably knurled or roughened as suggested by the lines on member I! in Fig. 6.
Actuating means for moving the jaw plates 10 and 21 toward each other on the conversing series of roller bearings 24 and 25, comprise pistons Si in cylinders 82. Abutments II maybe arranged on the pistons II, to engage the lower portions of the jaw plates 20 and 21, as best shown in Fig. 3. An extension 34 of reduced diameter underneath the piston Ii is disposed opposite an inlet for air'pressure. A flexible hose 3. is connected to the inlet 3|. It is to be understood that each cylinder I! has its own flexible connecting hose.
'lleanstendingtomaintainthejawbody lIin adjusted positions comprises a helical spring 31 wolmd upon the shaft ll. The spring 31 abuts te, cup-shaped annular members I. and II, causing friction between the I outer faces of the cup-shaped members and adjacent positions of the body it of the jaw member. A spline ll. urged in place by a screw ll restricts rotary movement of the cup-shaped members II and 3!.
In the operation of a stretching and shaping machine, having my present jaw members, any suitable table means 42 may be moved vertically between oppoud jaws II, which are arranged in lines parallel with each other. In Fig. 1 a metal sheet 43 has been indicated as being clamped at its ends by the jaw plates 26 and 21. Within the limits of the swinging movement of the jaw members II on the shafts ll, the jaw members may swingtoanypositicmcausingastraightpullon the metal sheet 43, when the table I! is raised forcibly against the sheet I. There may, oi course, be a wide'variety of shapes and sizes for the vertically movable table I. The wavy line 44 in Fig. 1 indicates that the center portion of the sheet 48. and of the table 42 have been broken away.
Iiandoi'theiawplateaflandfl.
While I have illustrated and described what I now regard as the preferred embodiment oi my invention, the construction is. of course, subject to modifications without departing from the spirit -sndlcopeoi'myinvention. I,therefore,donot wishtorestrictmyselitotheparticulartormol' construction illustrated and described. but desire toavsiimyselioiallmodiflcationsthatmayiall withinthelcoocoitbelm fl sseqsso Raving thm described my hiventiomwhat I elaimahddesiretosecurabyhtterslatatis:
Sheet anchoring means for a sheet lrstehias machlne,comprisingastatimarilymtedbody memberandaiawnemberswinaablylaountsdu said body member; andhavins sheet srinin means, sold members having interlappingioumal nortionsmshaitioumaledthrouhsaidporflous andiormin theaxlsoilwih iugmtotsald iawmembermneoitheioumalporflonsolthe cup-shaped friction elenen surromiding shalt within said cavity and havinetheir outer suriacesirictiouallym lewiththesidewalls oi the cavity and their peripheral portion vided with notches adapted to slim parallel to theaxis-oitheshamasllrinlaroundtheshaitin compression between andwithin said c ip-limped elements, and held thereby against displacement inadirectlonnormaitotheaxisoi'theahaft, ssplineiixedontbebodymemberoppoeitetmand enter-ins, said cavity, and similarly projecting into theperipherai notches oi the friction elemmts to thuslockthelatteracalnstrotstionandnreserve,
the'sprin aasinst torsionaldtturbance during swinsing movements oi the ilw member.
v M08! D. RIPLIY.
US453921A 1942-08-07 1942-08-07 Stretching machine jaw Expired - Lifetime US2349520A (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2437092A (en) * 1944-09-22 1948-03-02 Hpm Dev Corp Metal-stretching press
US2457483A (en) * 1946-10-02 1948-12-28 Royal E Martin Stretch-forming apparatus, including a segmental die connected at opposite ends to shiftable vises
US2522319A (en) * 1946-07-05 1950-09-12 Bigwood Joshua & Son Ltd Gripping device for sheet metal stretching machines
US2570039A (en) * 1949-08-06 1951-10-02 Standard Oil Dev Co Impact rotary slip lock
US2584282A (en) * 1944-04-04 1952-02-05 Western Electric Co Holding apparatus for testing cable
US2586536A (en) * 1947-03-15 1952-02-19 Haller John Pressure fluid clamp
US2702929A (en) * 1951-07-26 1955-03-01 Rohr Aircraft Corp Clamp
US2703711A (en) * 1949-09-01 1955-03-08 H B Armstrong Pressure fluid controlled stock feeder for punch presses
US2761725A (en) * 1952-02-06 1956-09-04 Nathan C Rushing Lifting clamps for hoisting lines
US2881821A (en) * 1957-09-03 1959-04-14 Cyril Bath Co Rapid cycle radial draw former
US3051217A (en) * 1958-07-11 1962-08-28 Aluminum Co Of America Stretching mechanisms
CN103143610A (en) * 2013-02-22 2013-06-12 上海交通大学 Holding device for skin and progressive stretch forming method of skin

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2584282A (en) * 1944-04-04 1952-02-05 Western Electric Co Holding apparatus for testing cable
US2437092A (en) * 1944-09-22 1948-03-02 Hpm Dev Corp Metal-stretching press
US2522319A (en) * 1946-07-05 1950-09-12 Bigwood Joshua & Son Ltd Gripping device for sheet metal stretching machines
US2457483A (en) * 1946-10-02 1948-12-28 Royal E Martin Stretch-forming apparatus, including a segmental die connected at opposite ends to shiftable vises
US2586536A (en) * 1947-03-15 1952-02-19 Haller John Pressure fluid clamp
US2570039A (en) * 1949-08-06 1951-10-02 Standard Oil Dev Co Impact rotary slip lock
US2703711A (en) * 1949-09-01 1955-03-08 H B Armstrong Pressure fluid controlled stock feeder for punch presses
US2702929A (en) * 1951-07-26 1955-03-01 Rohr Aircraft Corp Clamp
US2761725A (en) * 1952-02-06 1956-09-04 Nathan C Rushing Lifting clamps for hoisting lines
US2881821A (en) * 1957-09-03 1959-04-14 Cyril Bath Co Rapid cycle radial draw former
US3051217A (en) * 1958-07-11 1962-08-28 Aluminum Co Of America Stretching mechanisms
CN103143610A (en) * 2013-02-22 2013-06-12 上海交通大学 Holding device for skin and progressive stretch forming method of skin

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