US3166114A - Indenting type crimping tool - Google Patents

Indenting type crimping tool Download PDF

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Publication number
US3166114A
US3166114A US134717A US13471761A US3166114A US 3166114 A US3166114 A US 3166114A US 134717 A US134717 A US 134717A US 13471761 A US13471761 A US 13471761A US 3166114 A US3166114 A US 3166114A
Authority
US
United States
Prior art keywords
indentors
cam
levers
towards
common center
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
US134717A
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English (en)
Inventor
Herbert C Stoltz
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.)
TE Connectivity Corp
Original Assignee
AMP Inc
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
Priority to NL282402D priority Critical patent/NL282402A/xx
Priority to BE621604D priority patent/BE621604A/xx
Application filed by AMP Inc filed Critical AMP Inc
Priority to US134717A priority patent/US3166114A/en
Priority to GB32215/62A priority patent/GB938677A/en
Priority to CH1006362A priority patent/CH392656A/fr
Priority to FR907903A priority patent/FR1332429A/fr
Priority to DEA41030A priority patent/DE1173562B/de
Application granted granted Critical
Publication of US3166114A publication Critical patent/US3166114A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/042—Hand tools for crimping
    • H01R43/0424—Hand tools for crimping with more than two radially actuated mandrels
    • 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
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5313—Means to assemble electrical device
    • Y10T29/532—Conductor
    • Y10T29/53209—Terminal or connector
    • Y10T29/53213—Assembled to wire-type conductor
    • Y10T29/53235—Means to fasten by deformation

Definitions

  • lt is an object of the present invention to provide an improved indentation type crimping tool.
  • a further object is to provide an indenting type crimping tool which will produce a substantially symmetrical crimp between the connectors and the wire.
  • a still further object is to provide a crimping tool having a plurality of indentors for indenting an electrical connector in which a positive stop is provided for each indentor thereby to control its travel and providing also an actuating means for the indentors which is deferential to the stops.
  • a preferred embodiment comprising a pair of normally abutting blocks having semi-circular openings in their abutting surfaces which define an opening for an electrical connector.
  • a plurality of indentors are movable through radial openings in these blocks and into the central openings thereby to 4indent the connector contained therein.
  • the amount of travel of each indentor is controlled by a precisely positioned stop which prevents its being driven beyond a predetermined position so that the precise amount of indentation achieved by each indentor can be exactly and precisely controlled.
  • the indentors are driven inwardly by means of levers pivoted intermediate their ends which levers are rocked about their pivotal axes by a reciprocabie cam having a conical surface so that as the cam moves relatively towards the indentors, the levers are rocked in a manner such that the indentors are driven towards the connector.
  • This cam is capable of limited lateral movement during its movement towards the indentors so that if any one or more of the indentors should bottom or come against its stop prior to the other indentors, the cam will shift itself laterally and continue to drive the remaining indentors inwardly but it will not drive the previously stopped indentor further.
  • the actu-ating means is deferential to the stops which control the movement at the indentors.
  • FIGURE 1 is a perspective view with parts broken away of a tool in accordance with the invention.
  • FIGURE 2 is a side view with parts brokenaway of theembodiment of FIGURE 1.
  • FIGURE 3 is a View taken along the lines l3--3 of FIGURE 2.
  • FIGURE 4 is a View taken along the lines 4-4 of FIGURE 3.
  • FIGURE 5 is a perspective inverted view showing one of the indentor housings of the preferred embodiment.
  • FIGURE 6 is an exploded view'of the sub-assembly of FIGURE 5;
  • FIGURE 7 is a cross sectional view showing the ends of the actuating levers and their relationship to the indentors.
  • the preferred embodiment of the invention comprises a cylindrical housing 2 having an end wall 4 through which a rod 6 extends.
  • This rod has an enlarged tting 8 on its end which receives a threadedV coupling ,on theend of a supply hose 10 through which motive fluid, preferably compressedair,
  • a passageway 12 extends axially through the fitting 8 and into the rod for a short distance and lateral passageways 14 extend from passageway 12 to the interior of the cylinder 2. Compressed air is supplied to, and exhausted from, the interior of the cylinder through this hose and the passageways by means of a suitabie system of control valves, lnot specifically shown.
  • a piston 16 is slidably mounted on the rod 6 and has a peripheral flange 18 extending axially within the cylinder and bearing against the interior walls thereof.
  • a cam 2t) is loosely and slidably mounted on the rod 6 and has a conical surface 21 which slopes toward the axis of the tool.
  • This cam is normally biased lto the position shown in FIGURE 2, that is against a boss 22 on the piston 16, by means of a coil spring 24 which surrounds the rod 6 and bears against a slidable guide 26 positioned between the spring and the cam.
  • the spring 24 is received within a recess in a plate 28 threaded at 30 to the end vof the rod 6. It will be apparent from the description thus far that this plate and the rod 6 need not be secured to the cylinder 2 but that the parts will be maintained in the position shown by virtue of the effect of the spring.
  • the plate 28 has four evenly spaced radially extending slots 32 and the upper side of the plate as viewed in FIGURE 2 has ears 34 extending therefrom on each side of each of the slots.
  • Levers 36 are pivotally mounted between these ears at 38, the rearward or lower ends of these levers 40 being bifurcated and having cam followers in the form of rollers 39 mounted thereon for co ⁇ operation with the conical surface 21 of cam 20.
  • These lower ends of the levers are connected by contractile springs 37 which maintain the cam followers against the surface of the cam.
  • the forward or upper ends 44 of the levers extend beyond the plate 28 and, as shown in FIGURE 7, are received in the open ends of indentors 45 so that upon rocking movement of the levers about their pivotal axes 38, the four indentors are simultaneously driven radially towards a common center to indent a connector.
  • each indentor 45 is gen erally cylindrical in its intermediate section 46 andhas a shoulder 48 and a reduced end section 50 at one end thereof.
  • An indenting protrusion 52 extends from this reduced end and penetrates the connector during thev from FIGURE 9, the kend 44 of ⁇ each lever is advantageously rounded and is received betweenthe base of the slot 54 and the pin.
  • y Y v The indentors are slidably mounted in a pair of generally semi-cylindrical indentor housings 58,v 58 which are located and'secured in the upper end of the cylinder 2 by means of suitable fasteners. 65 and aliange 66.
  • the housing 58 has a generally V-shaped recess 60 extending inwardly from its face 59.
  • Two radial Yopenings 62 extend inwardly from the cylindrical surface 63 to this recess on each side of its apex, these openings being of asize suicient slidably to accommodate the large diameter 46 of the indentors'.
  • Radially extending slots 64 in the. surface 67 of the blockv communicate with the openings .62 ⁇ for theaccommodationof the ends 44 of the levers as shown in FIGURE 7, theseA slots being of a length Vsuftcie'nt to permit the rocking motion of the levers by means of which the indentors are moved.
  • a triangular clamping kblock 68 is disposed within the recess 60 and has an extension 70 on its apex which is slidably received within a groove 74 extending radially from the apex .of the recess. This groove is of a width sucient to receive the base portion 72 of the extension 70 which is of stepped construction as Vshown at 73.
  • Locking plates S4 secured to the upper surface of. the block 58, overlap the extension and hold it and the triangular block in position. yThese locking plates.
  • VVare spaced apart from each other and the central portion of the extensionw) is received between the opposed sides of these plates.
  • a pocket. 76 is formed in ythe block 58 beneath the groove 74 for vthe accommodation of a coil spring ⁇ 77 which normally urges the block 68 radially .inwardly ⁇ so that the two clamping blocks 68,V
  • a transverse, slot Y7,8 extendsacross the clamping block V68 from, its opposed sides and opens onto the face 80.
  • This slot is of a Width sucient to permit the inward movement of the reduced cross sectional end portion 5t) of the indentors.
  • Semi-circular recesses 82, 83 are provided on the surface'StB which, when the blocks 68, 68 are against each other define circular openings for the terminal which is being crimped and for the terminal which was crimped during the previous operating cycle. It will be apparent from FIGURE 7 that the indentors are driven radially towards the geometric center of the opening defined by the recesses 82, 82 when the blocks are againstv each other.
  • a cam 88 is pivotally mounted on a pin 90 on the extension 70 of the clamping block and provides a rearwardly extending arm to which one end of a spring 92 is attached. The opposite end of this spring is anchored on a ange on the end of a stop 91 so that the cam 88 as viewed in FIGURE 4 is normally biased in a clockwise direction.
  • the clockwise movement of this cam is limited by means of a stop pin 86 in extension 70 and V.adjacent to the previously .mentioned pin 90. It willV be apparent then that the lcam 88 can be .moved in a counterclockwise.direction from its position as shown but can not be movedV in a clockwise position.
  • the side'of the 'cam 88 which is adjacent to the meeting faces of .the clamping blocks 68, 68 has a shoulder 94 which is adapted to kbe engaged byone side of an oscillable plate 96.
  • plate is rotated about a pivotal axis as described below and moved relatively downwardly from the position shown in FIGURE 4 until it is past thevcenter line of the tool and past the pin 90. During such movement it rotates the cam 88 in a counterclockwise direction.
  • the plate moves relatively upwardly to its position of FIGURE 4 and the bevelled surface 100 on its upper sideengages the rounded surface of cam 88 and Vtends torotate it in a. clockwise direction. Since, however, this cam cannot be rotated in such a direction by virtue of the presence of pin 86, the entire cam and Vthe clamping block itself are moved rightwardlyfrom i the position shown Vin FIGURE 4. This has the effect of moving this clamping block 68 away from its clamping position with respect to the Ybelt upon which the terminals are mounted. The left-handy clamping block 68 is similarly moved by means of the cam plate 96 acting through the cam 88.
  • the two cam plates and the associated structure are substantially mirror images of each other, a fact which will readily be apparent from an inspection of FIGURE 4.
  • a stop in the form of a bar 91 is provided on housing 58 to ensure such positioning of the clamping blocks. This stop is held in position by fasteners 93 which secure the plates 84 to the housing and .extends across the ktop surface .of extension 70 of the clamping block.
  • a pin 95 in extension 70 normally abuts this stop and limits the travel of clamping block 68 towards its counterpart 68.
  • Block 68 has a similar stop bar to limit its travel towards the axis of the tool.
  • the plate 96 is secured to a jack shaft 98 which extends transversely across the uppersurface of the dividing plate 28, FIGURE 3.
  • Shaft 98 is rotatably supported in bearing brackets V102, 102 secured to the upper surface of the plate 28 on each side of the axis of the cylinder. mounted thereon having a generally arcuate arm 106 (FIGURE 2) which extends downwardly toward the surface of the plate 28. rI'he end .of this dog is adapted to be engaged by the end of a rod 10S ⁇ which is slidably mounted in a guide 112 in plate 28.
  • Rod 108 is normally biased downwardly as viewed in FIGURE 2 by means of a helical spring 114 whichy surrounds the rod and bears Vagainst an.
  • This spring is contained in a housing 107 in plate 28 and .acts through a plunger 111 on the arm 106 of dog 104. ⁇
  • Spring. 109 is compressed during the first portion of the cycle as ythe shaft'is rotated by rod 168 and the energy thus stored-is expended to return the shaft to its initial position during the secondV portion ofthe half of the operating cycle.. y
  • the cam 20 will adjust itself by moving laterally so that the lever associated with the indentor which has reached its stop will remain stationary and the remaining three levers will continue to be rocked until their indentors Zare also rocked against their respective stops.
  • the indentors themselves and the blocks 68 need be made to the close tolerances required to achieve a symmetrical crimp with indentations of equal depth. In other words, each individual indentor must be carefully dimensioned so that when it bottoms against the block 68 it will have penetrated the connector to the proper extent.
  • Apparatus for indenting electrical connectors comprising, a housing, a plurality of indentors radially spaced around, and movable towards and away from, a common center in said housing, means at said common center for holding an uncrimped connector, stop means engageable with each of said indentors for limiting the degree of penetration of said connector, and actuating means for driving each of said indentors towards said comrnon center, said actuating means for each of said indentors comprising a lever pivotally mounted intermediate its ends, one end of said lever being in engagement with its indentor, a reciprocable cam engaging the opposite' end of each of said levers, said cam being relatively movable towards said common center to rock each of said levers and thereby drive each of saidl indentors towards said common center, said cam ⁇ being capable of limited ⁇ movement transversely of its path of reciprocation whereby, said cam yields with respect to one of said levers if the indentor associated with said one lever engages its respective stop means and said connector
  • Apparatus for ndenting electrical connectors comprising, a cylindrical housing, connector holding means at one end of said housing for holding an electrical connector coaxially with respect to said housing, a plurality of indentors in said one end radially movable towards and away from said holding means, stop means for each'indentor limiting the movement thereof towards said Vholding means, a cam in said housing movable along the axis thereof and towards said connector holding means, a plurality of levers in said housing each having one end in engagement with one of said indentors and having its opposite end in engagement with said cam whereby, upon movement of ysaid cam, said levers are rocked and said indentors are driven towands said holding means, said cam being laterally movable with respect to its path of reciprocation whereby, upon engagement of one of said indentors with its respective stop means, said cam moves laterally in deference to said one stop means and said one indentor remains stationary while ⁇ the remaining indentors continue to move towards said holding means.
  • Apparatus for indenting electrical connectors comprising, a cylindrical housing, connector holding means at one end of said housing for holding an electrical connector coaxially with respect to said housing, ya plurality of indentors inV said one end radially movable towards i the other end of each lever bearing against saidvcam ⁇ whereby, upon movement of said cam towards said indentors, said levers move said indentors radially towards said connector holding means, said cam means being laterally movable by virtue of its loose mounting on said rod thereby to permit said cam to yield to one of said levers if the indentor associated with said one to rest against its stop means.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Jigs For Machine Tools (AREA)
US134717A 1961-08-29 1961-08-29 Indenting type crimping tool Expired - Lifetime US3166114A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
NL282402D NL282402A (en, 2012) 1961-08-29
BE621604D BE621604A (en, 2012) 1961-08-29
US134717A US3166114A (en) 1961-08-29 1961-08-29 Indenting type crimping tool
GB32215/62A GB938677A (en) 1961-08-29 1962-08-22 Improvements in tools for crimping electrical connectors
CH1006362A CH392656A (fr) 1961-08-29 1962-08-24 Dispositif pour sertir par poinçonnage des organes de connexion électriques sur des conducteurs électriques
FR907903A FR1332429A (fr) 1961-08-29 1962-08-27 Outils pour sertir des connecteurs électriques
DEA41030A DE1173562B (de) 1961-08-29 1962-08-28 Werkzeug zum Anpressen von Verbindungs-klemmen an ein Kabel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US134717A US3166114A (en) 1961-08-29 1961-08-29 Indenting type crimping tool

Publications (1)

Publication Number Publication Date
US3166114A true US3166114A (en) 1965-01-19

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ID=22464651

Family Applications (1)

Application Number Title Priority Date Filing Date
US134717A Expired - Lifetime US3166114A (en) 1961-08-29 1961-08-29 Indenting type crimping tool

Country Status (6)

Country Link
US (1) US3166114A (en, 2012)
BE (1) BE621604A (en, 2012)
CH (1) CH392656A (en, 2012)
DE (1) DE1173562B (en, 2012)
GB (1) GB938677A (en, 2012)
NL (1) NL282402A (en, 2012)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818569A (en) * 1970-11-25 1974-06-25 Amp Inc Releasing tool for multiple contact

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2280351A (en) * 1940-02-01 1942-04-21 H A Douglas Mfg Co Swaging apparatus
US2369180A (en) * 1942-12-15 1945-02-13 Guild Mfg Company Tool for applying electrical and telephone tip terminals

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2280351A (en) * 1940-02-01 1942-04-21 H A Douglas Mfg Co Swaging apparatus
US2369180A (en) * 1942-12-15 1945-02-13 Guild Mfg Company Tool for applying electrical and telephone tip terminals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818569A (en) * 1970-11-25 1974-06-25 Amp Inc Releasing tool for multiple contact

Also Published As

Publication number Publication date
GB938677A (en) 1963-10-02
CH392656A (fr) 1965-05-31
DE1173562B (de) 1964-07-09
BE621604A (en, 2012)
NL282402A (en, 2012)

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