US3517539A - Crimping tool - Google Patents

Crimping tool Download PDF

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Publication number
US3517539A
US3517539A US700824A US3517539DA US3517539A US 3517539 A US3517539 A US 3517539A US 700824 A US700824 A US 700824A US 3517539D A US3517539D A US 3517539DA US 3517539 A US3517539 A US 3517539A
Authority
US
United States
Prior art keywords
crimping
tool
piston
jaw
collar
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
US700824A
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English (en)
Inventor
Peter R Chirco
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.)
Huck Manufacturing Co
Original Assignee
Huck Manufacturing Co
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 Huck Manufacturing Co filed Critical Huck Manufacturing Co
Application granted granted Critical
Publication of US3517539A publication Critical patent/US3517539A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B21J15/02—Riveting procedures
    • B21J15/022—Setting rivets by means of swaged-on locking collars, e.g. lockbolts

Definitions

  • the present invention relates to crimping tools and more particularly to a crimping tool of the type for setting fasteners including a pin and a collar and in which the tool will apply a preload to the fastener as a result of crimping deformation of the collar.
  • 'It is an object of the present invention to provide a novel crimping tool.
  • FIG. 1 is a longitudinal cross-sectional View of the tool 0f the present invention
  • FIG. 2 is a sectional view to enlarged scale taken substantially along the line 2-2;
  • FIG. 3 is a sectional view to enlarged scale taken substantially along the line 3-3;
  • FIG. 4 is a blown up view of that portion of the tool enclosed by the dot-dashed line 4.
  • FIG. 5 is a sectional view taken substantially along the line 5'-5.
  • the tool is generally indicated by the numeral and includes a tubular housing member 12 -which has an enlarged cylinder 14 which terminates at one end in an enlarged, partially threaded counterbore 16 and at the other end in a reduced diameter eccentric bore 18.
  • This eccentric bore 18, in turn, is in coaxial communication with a reduced diameter through opening 20'.
  • a piston 22 has a large head portion 24 generally matably, slidably located within the cylinder 14 and is hydraulically sealed around its periphery by means of a pair of annular seals 26 located in seal receiving grooves 28.
  • the piston 22 has an eccentric rod portion 30 which extends axially and eccentrically relative to the head portion 24 and extends through the eccentric bore portion 18 and reduced diameter bore 20.
  • the piston 22 is mounted for reciprocation within the cylinder 14 lwhich is closed at its rearward end by a cap 32 which is held by a retaining nut 34 threaded into the counterbore 16.
  • the cap 32 ⁇ is pe* ripherally sealed by a seal 34 located in a groove 36.
  • the cap 32 has a throughbore 38 in communication with Patented June 30, 1970 a threaded portion 4t] which is adapted to receive a conventional hydraulic fitting.
  • a relief portion 42 is in communication with the passageway 38 and permits fluid flow into the cylinder 14 with the piston 22 in its rearwardmost position as shown.
  • pressurized fluid in the head end of the cylinder 14 moves the piston 22 forwardly against the bias of a return spring 44 which is located about the rod portion 30 and abuts against the head portion 24 and has its opposite end in engagement with the end wall of the reduced diameter cylinder or bore 18.
  • a return spring 44 which is located about the rod portion 30 and abuts against the head portion 24 and has its opposite end in engagement with the end wall of the reduced diameter cylinder or bore 18.
  • the forward end of the housing 12 terminates in a reduced diameter portion 46 which has an annular groove 47 located therein.
  • An outer or xed anvil 48 has a cylindrical portion 50 with a throughbore 52 similar to the bore 20 and is located over the outer extremity of the rod portion 30 of the piston 22.
  • the forward portion 5t) is provided with an annular groove 54.
  • a pair of semicircular locking rings 56 and 58 have generally C-shaped cross sections and are located with the legs of the C in the grooves 47 and 54 whereby the lixed anvil 48 will be secured from axial movement to the housing member 12.
  • An annular retaining sleeve 60 is located over the semicircular sleeves 56 and 58 to hold them together and a retaining ring 62 holds the ring 60 from axial movement.
  • the fixed jaw assembly 48 is axially xed to the cylinder housing 12. Note, however, that the xed jaw 48 is rotatable relative to the housing assembly 12 which serves a purpose to be described.
  • the iixed jaw member 48 has a generally longitudinally extending through-slot 64 which is in line with the bore 52 through the rearward portion 50.
  • a movable anvil 66 is generally slidably located Within the slot 64 and is supported for axial movement relative to the xed anvil 48.
  • the movable anvil 66 terminates in a reduced diameter pin portion 468 which is slidably movably engageable within a bore 70 at the forwardmost end of the rod portion 30 ⁇ of the piston 22.
  • a coil spring member 72 is located Within the slot 64 and has one end in a pocket at the forward end of the slot 64 in the xed anvil 48 and has its opposite end in a pocket in the movable anvil 66.
  • Spring 72 is biased to maintain the movable anvil 66 in its rearwardmost position in the slot 64; hence, the spring 72 also maintains the pin portion ⁇ 68 in the bore 70.
  • the movable anvil 66 can move independently of the piston 22.
  • the rod portion 30 by virtue of the engagement against the rearward end of the movable jaw 66 will move the jaw 66 forwardly in the slot 64.
  • the force of the rod portion 30 against the movable jaws 66 urging the jaw ⁇ 66 in its forward position is removed.
  • the jaw 66 will follow the rod portion 30 in its rearward movement by virtue of the bias of the spring 72.
  • the movable jaw 66 can move relatively to the piston 22.
  • the r fixed anvil 48 is rotated relative to the housing 12, by
  • the movable anvil 66 can also rotate by virtue of the interconnection provided by pin portion 68, bore 70 and spring 72.
  • the rotatable feature increases the versatility of the tool. With the eccentric rod portion 30, the tool can be used in areas in which there is a minimum amount of clearance in the area immediately behind the fastener being set. On the other hand, obstructions may appear at random locations relative to the fastener to be set. In this instance the fixed anvil 48 and movable anvil 66 can be rotated so as to place the entire tool in the most adavntageous clearance relationship with the obstruction.
  • the tool 10 is specifically adapted for use in setting a two-piece fastener including a pin and collar in which the collar could have been previously threadably secu-red to the pin to hold the workpieces together.
  • the addition of crimping can increase the preload between the fastener and the workpieces; this results from the iiow of material caused by crimping. It is desirable, however, that the collar be crimped at a specific location. To insure this, a pair of locating pins 74 are secured to the movable jaw 66 and extend into throughbores 76 in the fixed jaw in the outer forward wall of the fixed jaw 48.
  • the locating pins 74 are positioned at a preselected location relative to the crimping surfaces of the iixed and movable jaws to properly position the crimping surfaces relative to the collar.
  • the xed and movable jaws 48 and 66, respectively, are provided with confronting crimping surfaces 78 and 80, respectively.
  • the crimping surfaces 78 and 80 ⁇ are generally of a attened V shape in cross section each having a flat portion on its radially inner end which flat portion tapers to an increased width.
  • the tool 10 will be utilized in crimping collars which generally have a circular shape and hence the crimping surfaces 73 and 80 generally extend circularly.
  • some means should be provided in the crimping surfaces 78 and 80 to permit good metal flow and enhance the provision of a preload.
  • FIGS. 2, 4 and 5 the fixed jaw 48 and movable jaw 66 are shown in their opened position prior to crimping a collar.
  • the collar is indicated in phantom in FIG. 5 relative to crimping surface 78 (crimping surface '80 is identical).
  • crimping surface '80 is identical.
  • the general contour of the crimping surfaces 78 and 80 are circular and together extend for approximately 360 and While slightly smaller in diameter generally match the contour of the collar.
  • the circumferential ends 81 of the crimping surface 78 are of substantially increased radius which are smoothly blended to permit good flow of displaced collar material. By providing good iiow the collars can be crimped without being substantially distorted to an ovalshape which would decrease preload.
  • relief at ends 81 of crimp surface 78 (and similar relief at ends 83 on surface 80) provides an area for metal to flow and aids in keeping metal from flowing between and being trapped between the ends of jaws 48 and 66 which trapped metal would inhibit further crimping.
  • the movable jaw 66 is provided with a fiat guide and reaction plate member 86 (see FIGS. l and 3) which rides in tight engagement against the edges 88 of the side walls of the fixed anvil 48.
  • the use of the iiat plate member 86 in engagement with the substantial area of the edges 88 provides accurate guiding of the movable jaw 66 insuring translational movement and accurate alignment.
  • the substantial contact area between the flat plate member 86 and the guide edges 88 reacts the large forces Which occur during crimping.
  • This substantial contact area resists the tendency for the jaws 78 and v80 to pivot or rotate relative to each other as a result of the crimping forces and helps to keep the motion of the crimping surfaces 78 and 80 translational during crimping. This is important since a less effective crimp and less effective preload in the crimped collar results if substantial pivoting or rotation occurs during crimp.
  • the extent or depth of the crimp is determined by the total movement of the piston 22.
  • the total movement of the piston 22 is set by an adjustable stop pin 90 which is threaded into the forward wall of the cylinder housing 12 and extends partially into the cylinder 14.
  • the point of engagement of the head portion 24 with the stop pin 90 determines the forwardmost movement of the piston 22 and thus determines the extent or depth of the crimp which preferably is set such that the opposed crimped surfaces are generally along a common circle having the diameter of crimping surfaces 78 and 80.
  • the crimping tool of claim 1 including connecting means connecting said jaw means for rotation relative to said piston, said crimping portion extending generally semicircularly in its center with a radius no greater than the radius of the collar.
  • the crimping tool of claim 4 further including locating means extending between said jaw members a preselected distance from said projecting, crimping portion.
  • the crimping tool of claim 4 including iiuid actuating means connected to one end of said cylinder for actuating said piston for causing crimping and including a spring member biased against said piston for causing return of said piston.
  • the tool of claim 7 including a second spring member urging said jaw members apart.
  • the tool of claim 1 including a flat plate secured to one of said jaw members and in sliding engagement over a substantial area with edges ofthe other of said jaw members whereby pivoting of said jaw members during crimping is minimized.
  • the tool of claim 8 including a at plate secured to said one of said jaw members and in sliding engagement over a substantial area with edges of the other of said jaw members whereby pivoting of said jaw members during crimping is minimized, said piston having a rod portion eccentric with a head portion and with said connecting means connecting said jaw means generally in line with said rod portion, locating means extending between 2,968,202 1/1961 Evans 72-410 3,174,323 3/1965 Over 72-412 3,181,341 5/1965 Thornton 72--410 3,182,485 5/1965 Sund 72-410 3,212,316 10/1965 Smith 72-412 CHARLES W. LANHAM, Primary Examiner G. P. CROSBY, Assistant Examiner U.S. C1. X.R. 72-416, 453

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Clamps And Clips (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
US700824A 1968-01-26 1968-01-26 Crimping tool Expired - Lifetime US3517539A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US70082468A 1968-01-26 1968-01-26

Publications (1)

Publication Number Publication Date
US3517539A true US3517539A (en) 1970-06-30

Family

ID=24815017

Family Applications (1)

Application Number Title Priority Date Filing Date
US700824A Expired - Lifetime US3517539A (en) 1968-01-26 1968-01-26 Crimping tool

Country Status (6)

Country Link
US (1) US3517539A (xx)
JP (1) JPS5035280B1 (xx)
DE (2) DE6903025U (xx)
FR (1) FR2000826A1 (xx)
GB (1) GB1232969A (xx)
NL (1) NL140167B (xx)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3791190A (en) * 1972-07-13 1974-02-12 Huck Mfg Co Two jaw tool
US4848121A (en) * 1988-05-23 1989-07-18 Rottinghaus Robert B Manual hose end crimper
US4930326A (en) * 1988-05-23 1990-06-05 Rottinghaus Robert B Manual hose end crimper
US20140262497A1 (en) * 2013-03-15 2014-09-18 Hubbell Incorporated Controlled Compression Tube

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2968202A (en) * 1958-04-11 1961-01-17 Amp Inc Hydraulic crimping tool for crimping t-tap connectors
US3174323A (en) * 1960-06-14 1965-03-23 Amp Inc Crimping tool
US3181341A (en) * 1961-10-04 1965-05-04 Kearney James R Corp Dies for compression tools
US3182485A (en) * 1962-12-31 1965-05-11 Burndy Corp Compression tool
US3212316A (en) * 1963-10-23 1965-10-19 Amp Inc Fluid operated crimping tool

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2869407A (en) * 1954-10-15 1959-01-20 Greenlee Bros & Co Portable metal working tool
JPS41547Y1 (xx) * 1964-04-09 1966-01-20

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2968202A (en) * 1958-04-11 1961-01-17 Amp Inc Hydraulic crimping tool for crimping t-tap connectors
US3174323A (en) * 1960-06-14 1965-03-23 Amp Inc Crimping tool
US3181341A (en) * 1961-10-04 1965-05-04 Kearney James R Corp Dies for compression tools
US3182485A (en) * 1962-12-31 1965-05-11 Burndy Corp Compression tool
US3212316A (en) * 1963-10-23 1965-10-19 Amp Inc Fluid operated crimping tool

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3791190A (en) * 1972-07-13 1974-02-12 Huck Mfg Co Two jaw tool
US4848121A (en) * 1988-05-23 1989-07-18 Rottinghaus Robert B Manual hose end crimper
US4930326A (en) * 1988-05-23 1990-06-05 Rottinghaus Robert B Manual hose end crimper
US20140262497A1 (en) * 2013-03-15 2014-09-18 Hubbell Incorporated Controlled Compression Tube
US9397461B2 (en) * 2013-03-15 2016-07-19 Hubbell Incorporated Controlled compression tube
US10944227B2 (en) 2013-03-15 2021-03-09 Hubbell Incorporated Method of forming an electrical connector

Also Published As

Publication number Publication date
NL6901265A (xx) 1969-07-29
NL140167B (nl) 1973-11-15
GB1232969A (xx) 1971-05-26
FR2000826A1 (xx) 1969-09-12
JPS5035280B1 (xx) 1975-11-14
DE1903896A1 (de) 1969-10-23
DE6903025U (de) 1969-05-08

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