AU593367B2 - Creación de Inventos y Patentes con Inteligencia Artificial

AU593367B2 – Hermetic terminal assembly pin and method and apparatus for manufacturing same
– Google Patents

AU593367B2 – Hermetic terminal assembly pin and method and apparatus for manufacturing same
– Google Patents
Hermetic terminal assembly pin and method and apparatus for manufacturing same

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Publication number
AU593367B2

AU593367B2
AU75659/87A
AU7565987A
AU593367B2
AU 593367 B2
AU593367 B2
AU 593367B2
AU 75659/87 A
AU75659/87 A
AU 75659/87A
AU 7565987 A
AU7565987 A
AU 7565987A
AU 593367 B2
AU593367 B2
AU 593367B2
Authority
AU
Australia
Prior art keywords
pin
blank
metal
flange
die
Prior art date
1986-07-14
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.)

Ceased

Application number
AU75659/87A
Other versions

AU7565987A
(en

Inventor
Benjamin Bowsky
Larry Gene Burrows
Glenn Anthony Honkomp
Roger Walter Orlomoski
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.)

Emerson Electric Co

Original Assignee
Emerson Electric 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.)
1986-07-14
Filing date
1987-07-13
Publication date
1990-02-08

1987-07-13
Application filed by Emerson Electric Co
filed
Critical
Emerson Electric Co

1988-01-21
Publication of AU7565987A
publication
Critical
patent/AU7565987A/en

1990-02-08
Application granted
granted
Critical

1990-02-08
Publication of AU593367B2
publication
Critical
patent/AU593367B2/en

2007-07-13
Anticipated expiration
legal-status
Critical

Status
Ceased
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

H—ELECTRICITY

H01—ELECTRIC ELEMENTS

H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS

H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 – H01R33/00

H01R13/02—Contact members

H01R13/04—Pins or blades for co-operation with sockets

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

H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending

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

Y10T29/49—Method of mechanical manufacture

Y10T29/49002—Electrical device making

Y10T29/49117—Conductor or circuit manufacturing

Y10T29/49204—Contact or terminal manufacturing

Y10T29/49208—Contact or terminal manufacturing by assembling plural parts

Y10T29/49218—Contact or terminal manufacturing by assembling plural parts with deforming

Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC

Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

Y10T29/00—Metal working

Y10T29/49—Method of mechanical manufacture

Y10T29/49789—Obtaining plural product pieces from unitary workpiece

Y10T29/49798—Dividing sequentially from leading end, e.g., by cutting or breaking

Description

4, 9 ,?Application 4 3367 COMMONWEALTH OF 1 PATENTS ACT 1952 Form COMPLETE SPECIFICATION
(ORIGINAL)
FOR OFFICE USE Class Number: Lodged: Int. Class ,,Pomplete Specification-Lodged: Accepted: Published: Priority *I ‘2lp j.d ja eJuroo al po apuan pwm sawuaupuqW W1 su uoow lIZumop I@q[ Related Art: 4 Name of Applicant: Address of Applicant Address of Applicant: TO BE COMPLETED BY APPLICANT EMERSON ELECTRIC CO.
8100 West Florissant, St. Louis, Missouri63136, United States of America Actual Inventor: BENJAMIN BOWSKY LARRY GENE BURROWS GLENN ANTHONY HONKOMP ROGER WALTER ORLOMOSKI Address for Service: SANDERCOCK, SMITH BEADLE 207 Riversdale Road, Box 410) Hawthorn, Victoria, 3122 Complete Specification for the invention entitled: HERMETIC TERMINAL ASSEMBLY PIN AND METHOD AND APPARATUS FOR MANUFACTURING SAME The following statement is a full description of this invention, including the best method of performing it known to me:- *9*e
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4* 5 4* 4* SO 4 4* 4 1 4t tt.t 4- The present invention relates to hermetic terminal assemblies and mo~re particularly to an improved hermetic terminal pin and a ~method and apparatus for making the same.
It is known in the art of herw,=ttic terminal assemblies to employ a current carrying terminal pin with a stop flange and a straight shank, each pin being surrounded by a sleeve and sealed in place within a lip defining a hole in the terminal body by means of a fusible material such as glass. Various arrangements of such hermetic terminal assemblies can be found in US patent No. 4,296,275, issued to Benjamin Bowsky on October 20, 1981, and US patent No. 4,461,925, issued to Benjamin Bowsky and Glenn 15 A. Honkomp on July 24, 1984.
In the past, the stop flanges for these current carrying terminal pins have been formed through what often has been referred to as a «cold heading» process wherein a pin blank is pressed between a reciprocable press and a base die, a flange forming recess being provided between the press and die so that the pressed pin blank assumes the flange form determined by the recess between the press and die. To provide a fuse-like area in the pin blank, a second metal working rolling step has been employed to roll a groove into the blank adjacent the «cold headed» flange.
This past multi-step process has been comparatively expensive and cf ljw productivity, the strength and current carrying properties of the pin sometimes being restricted by axial and lineal stresses and metal crystallization brought on by the cold heading and subsequent groove rolling steps.
The present invention recognizing these problems in the past methods of forming terminal pins provides a unique method and apparatus for forming terminal pins which have improved, uniform current carrying qualities, the novel method and apparatus therefor insuring substantially uniform metal density and consistently high quality current carrying terminal pins, permitting high productivity of these pins at comparatively low cost, and with increased material savings. In addition, the, resulting terminal, pin iS ~fj
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-2has increased strength in the flange and flank portions where the same is desired and, at the same time, is provided with a preselected fuse-like area which accomodates for possible malfunctions in other parts of the assembly or the general apparatus with which the assembly is associated. Further, the novel method and apparatus of the present invention permits the ready use of preselected alloys, allowing for reduced forming operations and for controlled metal flow and displacement during such reduced forming operations to reduce metal waste, insure substantial uniform metal density, and improve consistent pin performance quality.
*Various other features of the present invention will 15 become obvious to one skilled in the art upon reading the disclosure set forth herein.
More particularly, the present invention provides a Ito method of forming current carrying terminal pins for hermetic terminal assemblies comprising: feeding stock metallic wire material from a storage zone to a cutting zone; severing the wire while in the cutting zone to preselected pin blank size; feeding the pin blanks successively from the cutting zone to a roll forming zone; and, roll forming 25 each of the blanks to displace a portion of the metal to form a radially extending flange in the pin blank with a reduced groove immediately adjacent thereto to provide a fuse-like area. In addition, the present invention provides novel die structure for rolling a terminal pin for a hermetic terminal assembly from a metallic pin blaiik comprising: planar surface means on the die structure face, the planar surface means being contoured to include metal displacing longitudinally extending lands therein having sides of differing angles of repose with respect to the planar surface means preselected to displace portions of the metal of the blank to a location intermediate the blank extremities to form a radially extending flange with the displaced metal in the pin blank and to leave a reduced groove in the pin blank immediately adjacent thereto to provide a fuse-like area.-Further, the present invention provides a novel terminal pin ~for carrying current in a -3hermetic-terminal assembly, the pin including a tapered flange extending radially from the body member, the body member having a pair of annular grooves on the opposite sides of the flange, one of which provides a fuse-like area in the pin and the other of which provides a lock on the flow of metal to prevent the pin blank in forming operations from elongating instead of forming the radially extending flange as is intended.
It is to be understood that various changes can be made by one skilled in the art without departing from the scope or spirit of the present invention. For example, in the method the metallic pin wire can be stored in other *9:than roll form and can be cut to size by any one of a number of cutting or severing arrangements and in the die apparatus, the location of the grooves and angles can be 9 varied, as can the groove depths to create various forms *of flanges and fuse-like and locking groove areas.
Referring to the drawings which disclose one advantageous embodiment of the inventive method, die structure and pin, Figures 2-13 being schematic in nature and grouped to selectively show individual features of the die struc- 9 ture: Figure 1 is a schematic view in block form the blocks 25 representing the machinery involved in carrying out each of the several steps of the inventive method; Figures 2a, 2b and 2c are schematic elevational face, bottom and enlarged entrance end views respectively, this 9:,,::group of view disclosing in general the pin rolling planar surface of the inventive die structure, this group of views omitting certain detailed features which, for purposes of clarity, are shown in later views of the drawings;t K Figures 3a? 3b, and 3c are partial elevational face, cross-sectional and enlarged end views, respectively, this group of views serving to disclose details of the compound angles in the sides of the lands of the die structure for formation of the upper groove, in each pin blank, the cross-sectional view being taken in a plane through line 3b-3b of Figure 3a; Figures 4a, 4b and 4c are partial elevational face,
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4 cross-sectional and enlarged end views, respectively, this group of views serving to disclose details of the compound angles in the sides of the lands of the die structure for formation of the lower groove in each pin blank, the crosssectional view being taken in a plane through line 4b-4b of Figure 4a; Figures 5a and 5b are partial elevational face and enlarged end views, respectively, this group of views serving to disclose details of the compound angles in the sides of the groove formiiig lands to direct metal to an extremity of the pin blank; Figures 6a and 6b are elevational face and top views, respectively, this group of views serving to disclose de- 15 tails of the entrance end ramp angle; Figures 7a and 7b are partial elevational face and ‘at cross-sectional views, respectively, this group of views 5 serving to disclose a reservoir groove for metal spillover, S.e. the cross-sectional view being taken in a plane through line 7b-7b of Figure 7a; i Figures 8a and 8b are partial elevational face and plan views, respectively, of the exit end of the moveable or long die disclosing an exit end ramp angle; Figures 9a and 9b are partial elevational face and cross-sectional views, respectively, disclosing a relief cavity and ramp relief at the exit end of the die structure, the cross-sectional view being taken in a plane through S» 2 line 9b-9b of Figure 9a; Figures 10a, 10b and 10c are partial elevational face plan entrance end views, respectively this group serving to disclose the novel shelf arrangement for the short die of the die structure; Figures lla, llb and lc are partial elevational face plan and end views of the entrance end of the short die structure, this group serving to disclose what occurs as the pin blanks enter the die structure; SFigure 12 is an enlarged entrance end view of the long and short die structure assembly; Figure 13 is a plan viewof the long and short die structure assembly in starting position to roll a pin blank; i r and, Figure 14 is an enlarged elevational view of the novel terminal pin of the present invention.
Referring to Figure 1 of the drawings, a wire 2 in roll form is fed from a storage and supply zone 3 through a suitable feeder 4 into a cutting zone 6 where it is cut in preselected lengths into metallic pin blanks 7, the pin blanks being subsequently fed successively from the cutting zone 6 to roll forming zone 8. In roll forming zone 8, a portion of pin blank metal of each pin blank is displaced to form a radially extending stop flange 9 in the blank with a reduced groove immediately adjacent thereto to provide a fuse-like area 11 (Figure 14) Roll formation of blanks 7 to provide terminal pins for hermetic terminal assemblies is accomplished through unique and novel die structure comprised of a pair of spaced, mating dies 12 and 13. Die 12 is reciprocably moveable relative stationary die 13 and slightly longer than stationary or short die 13. Details of the facing planar surfaces of the dies, which are substantially similar for roll forming of pin blanks 7, are described hereinafter. It is to be noted that advantageously wire 2 which can be any one of a number of suitable metallic materials such as solid stainless steel, or copper cored stainless steel such as 446 S.S. can be stored in storage and supply zone 3 in the form of coils, but it also would be possible to store wire rods of appropriatelly selected metallic material and length, in storage and supply zone 3. Any one of a number of known wire feeding and cutting mechanisms can be used to accomplish the feeding, cutting and die actuating steps of the inventive method and a commercial feeder such as one referred to as «Rapid Air» and a Hartford No. 312 Roller have been found satisfactory for these purposes, the novel invention resting in the several steps of the method for forming current carrying terminal pins for hermetic terminal assemblies, in the specific die structure use to accomplish the formation and in the pin itself.
Referring to Figures, 2 through 13 and the sub groups thereof various illustrations of the, novel die structure
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w -6are to be seen. It is to be understood that longer reciprocating die 12 and shorter stationary die 13 are secured in appropriate die actuating machinery (not described herein) in such a manner that spaced opposed planar surfaces are parallel with each other from top to bottom and spaced so that a cylindrical metallic pin blank 7 can be simulta3neously rotated and squeezed as long die 12 is reciprocated past short stationary die 13. During the cycle, each blank 7 being rolled traverses the length of the spaced dies and the geometrical shapes in the die faces are impressed into the blank. At the finish end of the stroke, the re-shaped blank (Figure 14) exits dies 12 and 13 and reciprocating die 12 returns to starting position to process another blank 7, which advantageously in the pref erred embodiment of the invention is automatically fed to the dies. It is to be understood that terminal pin producft tion rates which automatically machinery can vary f.rom approximately 10 to 1000 pieces per minute depending on the equipment and parts roiled.
Referring to the group of Figures 2a, 2b and 2c of the drawings, particularly Figures 2a and 2c which disclose in general the pin rolling planar surface of inventive short stationary die 13 and the outer dimensions of longer recio 25 procating di-e 12, there can be seen particularly in end view Figure 2c, the shape of the pin 7 external diameter after it has been formed (Figure 14). In this regard, attention is directed to the spaced parallel shoulders or lands 14 and 16 which serve to form fuse-like groove area 11 and a secondary groove areal7 in pin blank 7, land 14 j~ Ibeing cor’- oured to create a deeper and wider groove 11 than groove 17 created by land 16, the locking groove 17 serving to control secondary metal flow during forming operations. As can also be seen particularly in Figure 2c of4 the drawqings, between spaced shoulders or lands 14 and 16 of the die structure there is a recessed section 18 into which metal displaced by lands 14 and 16 flows to create the tapered stop flange 9. It is to be noted i7, Figure 2c that the slope from the horizontal of the uppe’ and lowe-‘ sides 19 and 21 respectively forming’ the land 1.4 differ,, -18- 33. A~ method of for ,Ing current carrying terminal pins for
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a a 99 a ‘1 a p.
9 a a a.
a a a a a a a., a a a t -7 with the slope of side 19 from the horizontal being approximately 300 and the slope of side 21 from the horizontal being approximately 650. It also is to be noted in Figure 2b, bottom view, that the shorter stationary die 13 tapers outwardly at both end extremities approximately 5 0 from grooved planar working surface 22 of the die 13 to the opposite non-working surface 23 for holding the die in place. Finally, it is to be noted that the uppzr portion of only shorter die 13 is stepped down at 24 longitudinally from the entrance end to approximately halfway to the exit end of the die to accomodate for the die functions as described hereinafter for Figures lla-llc. It is to be understood that although only groove details of the 15 working surface 22 of shorter stationary die 13 are described in detail herein, the grooved working surface of reciprocating die 12 can be substantially similar. except as otherwise indicated herein.
Referring to the group of Figures 3a, 3b and 3c of the drawings, which disclose details of the compound angles exnployed.in the land sides 14 of the die structure for formation of the upper groove 11 in pin blank 7, the reference numeral 25 in this group of figures serves to disclose the angles of variation used to direct displaced metal in the upper groove forming operation downwardly7 toward the flange forming channel 18 (Figure 2c) in the die structure. In this regard, it is to be noted that a little less than approximately one half of the die groove length, as indicated at 26, serves as a dwell zone to finally work and maintain that portion of the selected form as seen in Figure 14.
Referring to the group of Figures 4a, 4b and 4c of, the drawings, which disclose details of the compound angles employed in the land sides of land 16 of die structure for formation of the lower groove 17 in pin blank 7, the reference numeral 27 in this group of figures serves to disclose the angles of variation used to direct displaced metal in the lower groove forming operation upwardly toward the flange forming channel 18 (again Figure 2c)’ in the die structure. In this regard,, it is to be noted.
t .4 4 9 4 a. a.
a. a a *aaata a a f.
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a: 999, 9 99 9 9, *9 9 *99* *9 *9 99* 9* 4 L t -8that a little more than approximately one half of the die groove length, as indicated at 28, serves as a-dwell zone to finally work and maintain that portion of the selected form as seen in Figure 14.
Referring to Figures 5a~and 5b of the drawings, a compound angle 2a is disclosed in the upper side of land 14, this compound angle serving to direct excess displaced metal in the format ‘,on of upper groove area 11 toward the upper extremity of pin blank 7. This is necessary since the volume of metal displa-,ed in forming groove area 11 exceeds the amount of metal required for stop flange 9 formed in recess 18.
Referring to the group of Figures 6a and 6b of the 15 drawings, a ramp angle 31 extending from the entrance to less than one half the die length is provided to assure gradual land penetration for a given distance along the die length, allowing gradual metal displacement along the die length and preventing pin blank slippage and concomitant distortion. It is to be noted that the upper corner 32 at the die entrance end is rounded or chamfered to permit and facilitate die blank insertion and rotation of the blank about its axis for subsequent metal displacement by the die structure.
Referring to the group of Figures 7a and 7b, there is disclosed a reservoir 33 which follows the compound angle 29 in land 14 which as aforedescribed serves to direct excess metal upwardly in the formation of upper groove 11, the reservoir groove 33 receiving some of the upwardly displaced metal. in the early part of the rolling cycle, the metal being subsequently rolled back toward the groove f orming land 14 which forms groove 11 as the pin blank approaches the exit end of the die structure assuring good edge definition along the periphery of rolled groove 11. It is to be noted in Figure 7a, that reservoir 33 follows the angle of the groove forming land 14 and then runs horizontal with land 14 briefly, extending longitudinally for a little more than one half of the length of the die structure.
Referring to the group of Figures 8a and 8b of the 69 V~ I 4 9 9 4
I
9 9*9 659/87 4 6 -9drawings, the plan and elevational view of the exit end of the longer die 12 shows a ramp type relief angle 34 on the crest of the groove forming lands (such a relief being applicable to both dies) and the group of Figures 9a and 9b shows a ramp type relief angle 36 and a relief cavity 37. These reliefs serve to avoid pinching of the pin blanks 7 by the die structure when the rolling load in forming a blank 7 has been dissipated and the die structure, which haF yielded to the radial loads developed during rolling, springs back to normal position.
Referring to the group of Figures 10a, l0b and of the drawings, details of the shelf support on the short *aa*die 13 are disclosed. In Figure 10c which discloses the 15 entrance end of the die structure 13 it can be seen that a aa lower shelf 38 extends beyond the end of the roll forming *a section 39 to provide a seat for the extremity of pin *blank 7 as it enters the die structure. It is to be understood that the distance between the roll forming lands and the shelf 38 can be selected in accordance with pin blank size andjlocation of flange 9 thereon, the shelf serving to restrict axial extrusion of metal into the length of each blank 7 when the flange 9 is rolled into the blank.
As can also be seen in Figure 10c, a chamfer 41 is provided a fi 25 between body 39 and shelf 38 to provide a lead for the extremity of pin blank 7 as it rests on shelf 38. It is to be noted in Figures 10a and l0b, that shelf 38 extends better than half of the working length of the die structure a a before a step relief 42 is provided in the shelf. to prevent the blank from locking up in the dies after flange 9 has VI been formed. Further, a relief angle 43 is provided at the exit end of the die structure to allow blank 7 to exit without metal distortion.
Referring to the group of Figures lla, llb and 11c of the drawings, these figures serve to further disclose the upper portion of -the die structure at the entrance edge of the cooperating dies and particularly the guide on the short die 13 for the pin blanks 7 as these blanks are in,troduced unto the stop shelf 38 (Figures 10a, l0b and The notch 44 at the entrance of the die serves as a guide
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for the pin blanks as they enter into the die structure, the overhang 46, limiting axial growth of the upper extremity of the blank in form rolling operations. It is to be noted that a ramp angle 47 which is compounded allows for gradual introduction of the blank into the roll forming operation.
Referring to Figures 12 and 13, end and plan views of the overall die assembly including long and short dies can be seen, including the spaced groove forming lands or shou.i–irs 14 and 16 on the cooperating planar faces of the spaced stationary (shorter die 13) and reciprocable (longer die 12) dies. Attention also is directed to pin blank guide ,o *notch 44 and the opposed stops 42 and 46 (Figure 12) which 15 control and restrict the axial growth of each blank being rolled at opposite extremities of the blank.
t f o In carrying out the several steps of the inventive ;i method, using the inventive die structure apparatus des- Icribed herein, a suitable stainless steel wire coil, such as 446 S.S. having an approximate weight of 100 pounds is inserted into supply zone 3, fed by feeders 4 into cutting zone 6 where appropriate length terminal pin blanks 7 are Scut to size. These pin blanks are then successively fed into the roll forming zone 8 which includes shorter stat 25 tionary die 13 having its pin forming planar surface selectively spaced from and substantially parallel the similar pin forming planar surface of reciprocable longer die 12. The notched groove 44 in shorter die 13 serves to guide each blank 7 as it is introduced into the dies and the ramp angles 31 and 36 allow for gradual penetration of each blank as it is roll formed between the lands 14 and 16 of the spaced dies. As the pin progresses between the reciprocating and stationary die structure metal is displaced along the compound angles of the sides of spaced lands 14 i{ and 16, the metal being displaced downwardly by the sides of land 14 and upwardly by the sides of land 16 to flow i j» -into recess 18, thus forming tapered stop flange 9 on each pin blank 7 and the immediately adjacent grooved fuse-like area 11 and locking groove area 17. K Advantageously, the stock wire 2 can comprise a I t r I 1 ‘I i i 1 stainless steel composition of approximately 5% to approximately 40% chromium by weight and preferably approximately 23% to approximately 27% chromium by weight. Alternatively, a stainless steel composition of approximately 30% to nickel by’ weight and preferably approximately 48% to approximately 52% nickel by weight. It also has been found satisfactory to utilize a stainless steel stock of approximately 2% to 20% nickel and approximately 10% to chromium by weight and advantageously approximately 26% chromium and approximately 4% nickel by weight. It further has been found satisfactory to utilize a stock of low carbon steel up to approximately 0.16% carbon .by weight. Moreover, it is to be understood that a stock wire having a copper core and stainless steel jacket of a suitably selected composition as aforedescribed can be employed.
In the rolling operation and with the compound angle t r. die structure aforedescribed, the major portion of the metal flows downwardly in gradually increasing amounts at successive preselected flow angles to the blank axis of approximately 300 and 65% and a minor portion of the metal flows upwardly at a preselected angle of approximately 300 with a minor portion of metal flowing to opposite pin blank extremities where it is restricted from further flow by aforedescribed shelf 38 and overhand 46 to control axial growth at either end of the blank. As aforenoted suitable reservoir means 33 allows for metal control in the early t stage of the operation, the metal being reintroduced at a later stage of the rolling operation. Further, as above discussed, appropriate reliefs are provided in the die structure at the exit end to avoid blank distortion.
Thus, as can be seen in Figure 14, a unique, strong terminal pin capable of effective and continuous uniform current carrying performance is produced in a straightforward, efficient and economical manner with a minimum of waste and a maximum of production, the terminal pin having a strong, tapered stop flange 9 intermediate the extremities thereof and a pair of spaced annular grooves 11 and 17 of different uniform depths to provide both fuse-like and locking groove areas.
The claims form part of the disclosure of this specification.
0j

Claims (22)

2. The method of claim 1, wherein said stock wire f 16 material is of stainless steel stored in rolled form in said 17 storage zone. 18 3. The method of claim 1, said roll forming step S 19 including feeding each pin between a pair of spaced, opposed, complementary roll forming dies with the 21 longitudinal axis of the pin being normal to the I 22 longitudinal of said dies and moving at least one die in a 23 direction along its longitudinal axis relative the I 24 longitudinal axis of the other to radially displace the I 25 metal to form said flange and fuse-like portion in sai.l pin. S26 4. The method of claim 1, said roll forming step i 27 including displacing a portion of the metal from each side 28 of the displaced radially extending flange in said pin to 29 limit axial stretch. S’ ‘i891031,!psspeO0 3,emer.res, i *i r^ 12 a The method of claim 1, said stock wire material 2 comprising a stainless steel composition of approximately 3 to approximately 0% chromium by weight. 4 6. The method of claim 1, said stock wire material 5 comprising a stainless steel composition of approximately 6 23% to approximately 27% chromium by weight. 7 7. The method of claim 1, said stock wire material 8 comprising a stainless steel composition of approximately 9 30% to approximately 60% nickel by weight.

8. The method of claim 1, said stock wire material 11 comprising a stainless steel composition of approximately 12 48% to approximately 52% nickel by weight. t 13 9. The method of claim 1, said stock wire material 14 S Ct S 4: e i. 1 i 891031,!psspe013,emer.res, S- 13 comprising a stainless steel composition of approximately 2% to 20% nickel and approximately #10% to 40% chromium by weight.

10. The method of claim 1, said stock wire material comprising a stainless steel composition of approximately 26% chromium and apprcximately 4% nickel by weight.

11. The method of claim 1, said stock wire material comprising a low carbon steel up to approximately 0.16% carbon by weight.

12. The method of claim 1, said stock wire material comprising a copper core and a jacket of stainless steel of preselected composition.

13. The method of claim 1, wherein in said roll forming r 15 step for each of said pin blanks at least a major portion of pin blank metal from one end of each pin blank is t r displaced through metal flow away from said pin blank ex- ,4,4 f tremity at a preselected flow angle to the pin blank lon- it’. gitudinal axis in forming said pin flange and fuse-like area groove in said pin blank.

14. The method of claim 1, wherein in said roll forming step for each of said pin blanks at least a major portion of pin blank metal from one end of each pin blank is dis- placed through metal flow away from said pin blank extre- mity at successive preselected flow angles to the pin blank longitudinal axis in forming said pin flange and fuse-like area groove in said pin blank. tt: C 15. The method of claim i, wherein in said roll forming t t t t.step for each of said pin blanks at least a major portion of pin blank metal from one end of each blank is displaced c through metal flow away from said pin blank extremity at successive preselected flow angles of approximately and 65 to the pin blank longitudinal axis in forming said pin flange and fuse-like area groove in said pin blank.

16. The method of claim 1, wherein in said roll forming i Sstep for each of said pin blanks at least a major portion of pin blank metal from one end of each pin blank is dis- placed through metal flow away from said pin blank extre- mity at a preselected angle to the pin blank longitudinal axis in forming said pin flange and fuse-like area groove LII i» 1 1 1 1 I 1 1 S14- Sin said blank; and, a controlled minor amount of pin blank metal is Sdisplaced through metal flow toward said pin blank extre- 5 mity to control the amount of metal flowing to said flange.

17. The method of claim 1, wherein in said roll forming step for each of said pin blanks at least a major portion of pin blank metal from one end of each pin blank is dis- placed through metal flow away from said pin blank extre- mity in gradually increasing amounts at a preselected angle to the pin longitudinal axis in forming said pin flange and fuse-like area groove in said blank.

18. The method of claim 1, wherein in said roll forming step for each of said pin blanks at least a major portion 15 of pin blank metal from one end of each pin blank is dis- om* placed through metal flow away from said pin blank extre- mity at a preselected angle to the pin longitudinal axis in forming said pin flange and fuse-like area groove in *O said blank, a preselect quantity of said metal flow being controlled so as to flow into a reservoir during the early stage of said roll forming step and then reintroduced at C J *a later stage of said roll forming step. f 19. The method of claim 1, wherein in said roll forming step for each of said pin blanks at least a major portion of pin blank metal from one end of each pin blank is dis- placed through metal flow away from said pin blank extre- ii mity at a preselected angle to the pin longitudinal axis S «in forming said pin flange and fuse-like area groove in 1said blank, metal flow relief being provided in the later stage of each roll forming step to avoid flange distortion. The method of claim 1, wherein in said roll forming Sstep for each of said pin blanks at least a major portion K> of pin blank metal from one end of each pin blank is dis- placed through metal flow away from said pin blank extre- mity at a preselected angle to the pin longitudinal axis in forming said pin flange and fuse-like area groove in said blank, the metal flow at at least one of said extremi- ty of said pin blank being restricted to limit axial extru- sion.

21. The method of claim 1, wherein in said-.;oll forming, t I i step for each of said pin blanks at least a major portion of pin blank metal from one end of each pin blank is dis- placed through metal flow in a direction away from said pin blank extremity at a preselected angle to the pin longitudinal axis in forming said pin flange and a fuse- like area groove in said blank; and a minor portion of pin blank metal from the oppo- site end of each pin blank is displaced through metal flow in a direction away from said pin blank extremity at said opposite end at a preselected angle to the pin longitudi- nal axis in forming said pin flange and a locking groove in said blank.

22. The method of claim 21, said preselected angle for t 15 said minor portion of metal flow being approximately 30

23. Die structure .f .r l eria a fe-r -a»l L f comprising: planar surface means on said die structure face, said planar surface means being contoured to include metal displacing longitudinally extending grooves therein having c differing angles of repose with respect to said planar surface means preselected to displace portions of the metal of said blank toward a location intermediate the blank extremities to form a radially extending flange with dis- placed metal in said pin blank and to leave a reduced groove immediately adjacent thereto to provide a fuse-like area.

24. The die structure of claim 23, said planar surface means being further contoured to include spaced, longitu- dinally extending grooves therein having differing angles of repose with respect to said planar surface means to displace portions of the metal of said blank from opposite directions toward a location intermediate the blank extre- mities to form a radially extending flange in said blank with reduced grooves immediately adjacent opposite sides ;i of said flange ti provide fuse-like and locking groove i i areas therein. The die structure of claim 23, said planar surface means on said die structure face including a ramp angle Ij 40 extending from the entrance to the planar surface means i Sl. 1 1 1 11 *r- -~16- along the length thereof a preselected distance to assure gradual metal penetration.

26. The die structure of claim 23, said planar surface means including a reservoir groove extending longitudinally adjacent said metal displacing grooves a preselected dis- tance from a location near the entrance to a location in- termediate the planar surface means extremities to accom- modate for excess metal in the early portion of the rol- ling stroke to assure edge definition on the formed flange.

27. The die structure of claim 23, said planar surface means on said die structure face including a relief cavity and ramp relief at the blank exit end thereof to prevent flange distortion as the blank exits the die structure.

28. The die structure of claim 23, said die structure St including a blank extremity support shelf extending longi- tudinally along and nonrmal to a longitudinal edge of said die structure face to provide a locating and rest sur- face for said metal pin blank, restricting axial extrusion of said pin blank.

29. The die structure of claim 23, said structure in- cluding a pair of substantially similar planar surface die members vertically disposed witht said planar surfaces in facing parallel relationship a preselected spaced distance in accordance with the metal blank size to be rolled. Die structure for Iad=a -a o~l; ir~ r’rrl prising: pair of substantially similar planar surface die members vertically disposed with said planar surfaces in facing parallel relationship a preselectied spaced distance in accordance with the metal blank size to be rolled: a blank extremity support shelf extending longitu- dinally in a horizontal manne, along and normal to the lower horizontal edges of said facin-g die members to provide a locating and rest surface for said rtietal pin blank, res- tricting axial extrusion thereof at said extremity; said facing planar surfaces of said die.-members being contoured to include spaced, longitudinally exten- AA41 40 ding horizontal lands -therein having sides of’differing STF. thereof, various illustrations Of the novel die structure *6*e 9 0*R 9 9. 9, 9 9*. *4 9 94* L #9 t~g t ~c t 4 1 1 tIl I 9 I I I I I I I I I I f I t 17 .angles of repose with respect to said facing planar surfaces to displace portions of the metal of said blank from oppo- site directions along the longitudinal axis of said blank toward a location intermediate said blank extremities to form a radially extending flange in said blank with re- duced grooves immediately adjacent opposite sides of said flange to provide fuse-like and locking groove areas; said facing planar surfaces including a cut away at the blank entrance end to serve as a guide for the blank as it is introduced into the spaced dies and a ramp angle extending from the entrance a preselected distance along the length thereof to assure gradual metal penetra- said planar surfaces further including reservoir grooves extending adjacent said metal displacing lands for a preselected distance from a location near the entrance to a location intermediate the planar surfaces vertical extremities to accommodate for excess metal in the early 20 portion of the rolling stroke of the dies to assure flange edge definition; said planar surfaces further including relief ca- vities and ramp reliefs at the blank exit end thereof to prevent flange distortion as the blank exits the facing 25 die members.

31. A terminal pin for a hermetic assembly comprising: a longitudinally extending solid cylindrical electrically conductive metallic body member having a Stapered flange extending radially therefrom intermediate the extremities thereof; and, a pair of spaced annular grooves in said body member on opposite sides of said radially extending flange to provide a fusable area which melts to breaking first when current through the pin becomes excessive and locking groove areas in said pin.

32. The terminal pin of claim 31, said grooves being of different depth to provide fuse-like and locking groove areas. A 7o 18-

33. A method of for ing current carrying terminal pins for hermetic terminal assemblies substantially as hereinbefore described with reference to the accompanying drawings.

34. Die structure for rolling a terminal pin for a hermetic tsrminal assembly from a metal pin blank substantially as hereinbefore described with reference to the accompanying drawings. A terminal pin for a hermetic assembly substantially as hereinbefore described with reference to the accompanying drawings. 3 Th a r o 1 t R pm n tp f g r PM+ w, methods, processes, compounds and compositiojT erred to or indicated in the spe ci -f n an d/or claims of the a 9 application i ually or collectively, and any and all DATED THIS 13th July, 1987 SANDERCOCK, SMITH BEADLE Fellows Institute of Patent Attorneys of Australia. Sstct Patent Attorneys for the Applicant EMERSON ELECTRIC CO. rE 1, B, BA 8 7 0 7 13,!gdspe.003,emers.spe,

AU75659/87A
1986-07-14
1987-07-13
Hermetic terminal assembly pin and method and apparatus for manufacturing same

Ceased

AU593367B2
(en)

Applications Claiming Priority (2)

Application Number
Priority Date
Filing Date
Title

US885282

1986-07-14

US06/885,282

US4739551A
(en)

1986-07-14
1986-07-14
Hermetic terminal assembly pin and method and apparatus for making the same

Publications (2)

Publication Number
Publication Date

AU7565987A

AU7565987A
(en)

1988-01-21

AU593367B2
true

AU593367B2
(en)

1990-02-08

Family
ID=25386543
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Application Number
Title
Priority Date
Filing Date

AU75659/87A
Ceased

AU593367B2
(en)

1986-07-14
1987-07-13
Hermetic terminal assembly pin and method and apparatus for manufacturing same

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US
(1)

US4739551A
(en)

EP
(1)

EP0253753A3
(en)

JP
(1)

JPS6321774A
(en)

KR
(1)

KR880002299A
(en)

CN
(1)

CN1010564B
(en)

AU
(1)

AU593367B2
(en)

BR
(1)

BR8703354A
(en)

CA
(1)

CA1265320A
(en)

DK
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DK362487A
(en)

IL
(1)

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Families Citing this family (16)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US4739551A
(en)

1986-07-14
1988-04-26
Emerson Electric Co.
Hermetic terminal assembly pin and method and apparatus for making the same

BR8800864A
(en)

1988-02-29
1989-09-26
Amp Do Brasil Conectores Eletr

APPLIANCES AND PROCESS FOR THE MANUFACTURE OF ELECTRIC PINS

US4921452A
(en)

1988-08-22
1990-05-01
Hilliard Dozier
Breakaway hermetically sealed electrical terminal

US4830630A
(en)

1988-08-22
1989-05-16
Hilliard Dozier
Hermetically sealed electrical terminal

US4964788A
(en)

1990-03-21
1990-10-23
Tecumseh Products Company
Hermetic terminal with terminal pin assemblies having fusible links and motor compressor unit including same

US5035653A
(en)

1990-04-02
1991-07-30
Emerson Electric Co.
Terminal block for a hermetic terminal assembly

US5017740A
(en)

1990-04-02
1991-05-21
Emerson Electric Co.
Fused hermetic terminal assembly including a pin guard and lead wire end connection securing device associated therewith

US5230134A
(en)

1992-02-11
1993-07-27
Laue Charles E
Method of making a petal rod

DE19541045A1
(en)

1995-11-03
1997-05-07
Rudolf Goerlich
Manufacture and storage of contact pins for electrical components

DE19605840C2
(en)

1996-02-16
1997-12-18
Sanol Arznei Schwarz Gmbh

Device and method for producing connector pins for micro connectors

JP3676608B2
(en)

1999-02-19
2005-07-27
矢崎総業株式会社

Manufacturing method of terminal for substrate

US7683264B2
(en)

2006-09-19
2010-03-23
Ut-Battelle, Llc
High pressure, high current, low inductance, high reliability sealed terminals

US8087281B2
(en)

2008-08-06
2012-01-03
Bead Industries, Inc.
Method to continuously form surface mount flanged pins

CN102728750B
(en)

2012-06-11
2014-07-30
河南航天精工制造有限公司
Rivet core rod diameter breaking groove machining device

JP6293095B2
(en)

2015-07-06
2018-03-14
ショット日本株式会社

Airtight terminal with fuse

CN109483177B
(en)

2018-12-25
2019-11-05
浙江童氏汽车部件股份有限公司
A kind of production technology of ball stud

Citations (1)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US4739551A
(en)

1986-07-14
1988-04-26

Emerson Electric Co.

Hermetic terminal assembly pin and method and apparatus for making the same

Family Cites Families (13)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US3295005A
(en)

1963-10-28
1966-12-27
Champion Spark Plug Co
Ceramic sealing structure

US3550250A
(en)

1968-02-28
1970-12-29
Joseph J Cervenka
Machine for applying terminals to bobbins

GB1594943A
(en)

1977-01-13
1981-08-05
Avdel Ltd
Method of making a mandrel for a self-plugging blind rivet

US4217137A
(en)

1978-03-13
1980-08-12
Medtronic, Inc.
Gold based alloy composition and brazing therewith, particularly for ceramic-metal seals in electrical feedthroughs

SE7808672L
(en)

1978-08-16
1980-02-17
Nordisk Kartor Ab

METHOD OF PROCEDURE FOR MANUFACTURING Nails

GB2074066B
(en)

1980-04-18
1983-07-06
Nss Ind
Torque-limiting screw-thread fastener and method of manufacture

US4584438A
(en)

1980-07-07
1986-04-22
Erl Koenig
Percussion air motor

US4461925A
(en)

1981-08-31
1984-07-24
Emerson Electric Co.
Hermetic refrigeration terminal

JPS5846584A
(en)

1981-09-11
1983-03-18
坂東　一雄
Method of producing connector or pin-shaped terminal

JPS5987942A
(en)

1982-11-12
1984-05-21
Union Seimitsu:Kk
Rolling die of grooved pin

JPS6153042A
(en)

1984-08-23
1986-03-15
出光石油化学株式会社
Multilayer material

US4584433A
(en)

1984-12-03
1986-04-22
Emerson Electric Co.
Hermetic terminal assembly

FI73490C
(en)

1986-01-16
1987-10-09
Makron Oy

Press for roof chairs.

1986

1986-07-14
US
US06/885,282
patent/US4739551A/en
not_active
Expired – Lifetime

1987

1987-04-21
CA
CA000535165A
patent/CA1265320A/en
not_active
Expired – Lifetime

1987-05-19
JP
JP62122351A
patent/JPS6321774A/en
active
Granted

1987-07-01
BR
BR8703354A
patent/BR8703354A/en
not_active
IP Right Cessation

1987-07-02
EP
EP87630115A
patent/EP0253753A3/en
not_active
Withdrawn

1987-07-03
IL
IL83073A
patent/IL83073A/en
not_active
IP Right Cessation

1987-07-13
CN
CN87104894A
patent/CN1010564B/en
not_active
Expired

1987-07-13
DK
DK362487A
patent/DK362487A/en
not_active
Application Discontinuation

1987-07-13
AU
AU75659/87A
patent/AU593367B2/en
not_active
Ceased

1987-07-14
MX
MX007347A
patent/MX165761B/en
unknown

1987-07-14
KR
KR1019870007541A
patent/KR880002299A/en
not_active
Application Discontinuation

Patent Citations (1)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US4739551A
(en)

1986-07-14
1988-04-26
Emerson Electric Co.
Hermetic terminal assembly pin and method and apparatus for making the same

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Publication number
Publication date

US4739551A
(en)

1988-04-26

IL83073A0
(en)

1987-12-31

CN87104894A
(en)

1988-01-27

AU7565987A
(en)

1988-01-21

CN1010564B
(en)

1990-11-28

MX165761B
(en)

1992-12-03

EP0253753A3
(en)

1989-11-29

KR880002299A
(en)

1988-04-30

DK362487A
(en)

1988-01-15

IL83073A
(en)

1990-11-05

BR8703354A
(en)

1988-03-15

EP0253753A2
(en)

1988-01-20

JPS6321774A
(en)

1988-01-29

DK362487D0
(en)

1987-07-13

JPH0451953B2
(en)

1992-08-20

CA1265320A
(en)

1990-02-06

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