US1795141A - Assembling press - Google Patents

Description

March 3, 1931. A. w. PHELPS 1,795,141

ASSEMBLING PRESS Filed Dec. 7, 1928 3 Sheets-Sheet 1 March 3, 1931 A. w. PHELPS 1,795,141

ASSEMBLING PRESS Filed Dec. '7. 1928 3 Sheets-Sheet 3 Patented Mar. 3,1931

UNITED STATES PATENT OFFICE ALVA W. PHELPS; QF ANDERSON, INEDIANA; ASSIGNOR T DELCO-REMY CORPORATION,

' OF DAYTON, OHIO, A CORPORATION OF DELAWARE ASSEMBLIN G PRESS Application filed December 7, 1928.

Thisiinvention :relates to a. machine for and a process of assembling parts of atimer "and particularly to a machine tor and a process of automatically assembling the governor weight plate and the governor weight plate pins used inautomatic ignitiontimers.

. An'object of this invention is to press-lit or stake pins into an insulating plate: This isaccomplished by insertinga group otpins into pin holdersmounted ina rotatable work support which is-intermittently driven. 11 plate with a plurality'ot apertures is placed over the pinsso'thatthe heads ofthe pins exctend'through certain of said apertures. The

plate is supported ingthis'position on a plurality of resiliently lmounted supports .mounted-imrecesses provided therefor in the work support. Fromthis.pre assembled:po-

sition, the rotatable worksupport together uvith the pins and the plate are rotated to a work position where acrosshead forces the plate upon :the pins in a direction normal to the-plane otirotation of said work support.

lvlountedin the crosshead are a. plurality of ejectors which eject the pins from the crosshead as the erossheadi'ecedes from the work position. As the crosshead lets go of the a plate and the pins, they are raised and carzriedto the sidewith therotatable work sup port. .By carrying. outtheabove process, a

better assembly is obtained inla shorter length of time w th less :labor, thereby 111 I creasingahe lifeof the assembly and reducing the cost of production.

Further objectsnnd advantages of the lipresent invention will be apparent fromthe following description,reference being had to H theaccompanying drawings, wherein a preterred :t'orin of embodiment of the present invention is clearly shown.

In thedi'awings: Fig. 1 is a side elevation of theassembly. Fig. 2- is a sectional View of the work table and a portionofthe crosshead taken substantially along the lin'e'Q-fll otFig. 6. J

Figsh3and'5 are sectional views of the work support and the crosshead takensubstantiallyalong thelines 3-3 and 55 respectively of Fig.1 2.

)4- ,is a view. similar, to Fig. oshowing Serial no. 324,340.

driving mechanism. In suitable journals in member 12 is mounted the crank shaft 1% which has attached thereto the flywheel and pulley 15 which may be driven from a belt or any other suitable driving means. On crank shaft let there is attached a crosshead 16,.t-he details of this are not explained for the reason that this is all conventional and the invention does not reside in this part ot the mechanism. Mounted on the crosshead 16 is a tool carrying member 18 having mounted thereon a reciprocating presser member 17. The crosshead 16 is guided with respect to the work table by a pair of leader pins 19 which are fixedly attached to a base 21. Screw-threaded into has-2021 is a stud 22having a pair of shoulders 2?; and 24, the shoulder 23 engaging the base 21. Mounted on the stud 22-is the rotatable work support 25 which consists of a pair of subst-antially circular plates 26 and 27 secured together by sultable bolts 28. screw-threadedly engaging plate 26. The plates 26 and "27 and the arm 30 are held in position. by

lock nuts 29. on thostud 22. Intermediate the work table 25 and the base plate 21 is the oscillating arm 30 having a raised portion 31, the raised portion 31 cooperating with shoulders 23 and 24 in supprn'tingtho work table 25. Intermediate arm 30 and the stud 22 is a bronze or brass bushing 33 and intermediate plates 26-.and 27 and the stud 22 isa bronze or brass bushing In the periphery ofplates 26 and-27 there are a number of U-shaped recesses or notche v 36 having mounted therein .U-shaped members .37 made of hardened steel and fastened to the plates 26 and 27Lby suitable bolts not 1 shown.

The means for intermittently,rotating the rotary worksupport consists of the arm upon which is pivotally mounted at 42 a I "pawl 40 having adetent 41. To one side of the pawl 49 is a recess 43 supporting a spring 44 which urges the pawl towards the recess 39 in the U-shaped member 37, the spring being attachedto the arm at 48.

Pivotally attached to the arm 30 is a rod 70 which is attached to a chain 71 by means of a turnbuckle assembly 72, the chain pass- H l I ing over a pulley 4 8 and attached to a weignu 74 which urges the arm 30 in a clockwise direction as viewed inFig. 6. On the other end of arm 30 is pivotally attached a rod 80 connected to a chain'81 by a turnbuckle 82. he chain 81 is passed under a pulley 83 and-is attached to an arm 84 which is secured to the reciprocating crosshead 16 by means of a pair of bolts 85whereby the arm 30 is positively rotated in a counterclockwise 'directionas viewed in Fig. 6 when the crosshead is being raised.

7 In Figs. 1 and 6 it may be readily seen that as the cross head moves downwardly and upwardly, arm 30'will rotate in a clockwise di- V V rection into the dot-dash position, due to the I force exerted by the we ght 7 4- on the chain 71 and in a'counterrclockwise direction by iii) the chain, 81 intofull line position, respectively. Itwillbe' seen thatas the armf30 rotates in thecounter clockwise direction approximately 15 degrees .from the dot-dash. position,,-pawlwill engage notch 39 on the side of the work table 25, then rotating the work table through an angle of 950 dei grees. l-Iere the work table is locked in position by detent 51 on member 50, which is pivotally mountedion the base 21 at 55, and

' is biased infa clockwise direction into notch gages member 61,. freely rotating 61 in'a' counter-clockwise direction, as best seen in Fig. 8," 'Member 60, however, rotates past thepoint of engagement. of member 61,

3 39 by means of spring 54, having oneend attached to the base 21 by pin 56 and the finember mounted on the arm 30 diametrically opposite pawl 401 As the arm 30 re tates in a clockwise direction, member 60 enthereby permitting member 61 to be snapped back in a clockwise direction by a spring '62 secured to the base 21 by. a pin 162 and to member 61 by a pin 262; As arm 30 rotates in a counter-clockwise direction, trip 60 engages member 61'1noving 61 in a clockwise direction, which causes-member 50to also I rotate in the same direction as a shoulder 161 on member 61 engages a pin 150 mounted in member 50. This releasing mechanism is so timed that detent 51' will be completely out of engagement of the notch 36 when the pawl 40 engages another notch 39, thereby permitting the pawl 40 to rotate the table. In Fig. 6 it may be readily seen that trip 60 is moved out of engagement with member 61 long before arm 30 has completed its rotation in a counter-clockwise directionp This permits member 50, by means of the spring 54, to urge detent 51 into another notch 39 as arm 30 approaches its'limit of rotation in the counter-clockwise direction. 7

Intermediate the work table assembly 25 and base plate 21 is an anvil 90 which is directly underneath the member 17. The anvil 90 is bolted to the base plate 21 by bolts 91 and 92 threadedly engaging the an. vil 90; Also bolted to the base pla-te 21 is the upright 93 whichhas mounted thereon a tubular member 94 provided with ahead 95 and locked in position by means ofa nut 96, the external threads of thetubular member 94 threadedly engaging thev upright 93. Throughthe tubular member 94 is a freely movable bolt 97 having mounted thereon a retarding member or braking member 98 held in position by means of a nut 99.- Member 98 has a concave surface; of substantially the same curvature as the cylindrical'plates 26 and 27. and the tubular member 94 is acompression helical spring 100. By adjustingthe sleeve 94, the pressure exerted by member 98 against the rotatable work table 25 'may be varied.

In member 17 "there are a plurality of aligned apertures 105 which are aligned with recesses 106 in member 18. 7 Before assembling members 17 and 18, the ejectors 107 and the springs 108 are inserted into theseapertures, the ejectors 107 being acted upon by the springs 108 to eject the assembly fromt'he crosshead as the crosshead recedes fromtlie Mounted intermediate the nut 99 operative position.- In plate 26there are a V plate 26, pins 115 may beinserted into the tubular member and remain standing there. Each of the pins 115 in the parti'cular work piece disclosed has ahead 116, a neckll'i and a shoulder 118. The function of each of these is not described in this application for the reason that this article is'shown and claimed in the'copending applicationiof Carl -H. Kindl, Serial No. 80,714,filed January 12,

The resilient means forfsupporting" the work plate 120, which is best seen in Fig.7.

consists of a pair of supporting members 125 I mountedin an aperture126in plate26 which recess 127 in plate 27.

. 115 into the members 111a.

7 Operation In this disclosure 12 groupsof pinholders 111 and112groups of plate supporting members 125 have been provided in the Work table 25. Only two of these groups have been numbered, the remaining groups being unnumbered for the sake of clearness. Group A, comprising pinsllla and supporting members125a, is the group in the work assembling position. -When a group is in this position, the-operator during a rest period of the work support inserts a pair of pins After inserting the pins 115, he places a plate 120 on the .plate supporting members 125 in sucha position that the pins 115 are in alignment with the.

apertures 121 in the plate 120. Each successive group receives a pair of pins 115 and a plate 120 when they'reachthis position. The

pins 115.and theplate 120 are rotated in this pre-assembled position with the 'WOIk table in V a counter-clockwise direction until they arrive at the position B diametrically opposite position A and directly underthe crosshead l6 andoverthe anvil 90. Here the plate 120 is forced or pressed into the homeposition by the-cross head 116, as bestseen in Fig. 5. v

Since the crosshead receives the pins 115 whichhave beenpermitted toextend'into the recesses 109,'the'pinsand plate are ejected by members 107 which are acted on by the compression springs 108. The plate andthepins will also be raised from the rotatable work support 25 and by theplate supporting memhers 125. .From'this position the assembled unit is removed'from the wo'rktable 25 by a suitable blast of air which has not been shown -ent invention as herein disclosed, constitutes i a preferred. form, it is toibe understood that r -other forms might be adopted, all coming within the scope ofthe claims which follow.

What isclaimedis as follows: 51. A machine for press-fitting pins in a governor weight plate having holes therein plate over the pins to press-fit the pinsinto for the pins comprising, in combination, a

rotary work table,.means for supporting the pins on said table,means for supp'ortingithe the plate alignedwith the pins, reciprocatpins, said reciprocating means forcing the the'plate, and :means for 'ejectingthe" ins fro'm" the crosshead-iafter :the pins have een I r 2. "4; machine for staking pins in plates,

comprising, in combination, a rotary work table, means for intermittently rotating said work table, means for supporting the pins on'said table, resilient means for supporting a the plate above saidwtable, a reciprocating crosshead with recesses-aligned with the:pins, said reciprocating -crosshead forcing the plate home thereby staking the pins in the plate, driving means for reciprocating the .crosshead, and means for ejecting the pins tating the work support, means for supporting the pins on said support, means for supporting the plate above the work support, said plate having apertures aligned witl: the

pins, reciprocating means for forcing the plate down over the pins thereby press-fitting the'pinsto the plate,1means ifor drivingsaid reciprocating means, and a brake for said rotary table toprevent excessivemoveme'nt of the table.

4. A machine-according to claim 3 in which :the means for supporting the pins on: the

table, comprises a movable sleeve anounted in a recess in the work table, said movable sleeve having a shouldercooperatingwith a i shoulder in said recess for limitingthe upward movement of said sleeve, resilient means for urging the said sleeveupward and a movably mountedcore 'in :the sleeve, the

diameter of the. core being substantially the diameter of the p1n,the core-and sleeve cooperating in holding the pin, the core preventing downwardmovement of the pin.

5. A machineaccording to claim 3-i1rwhich the means for intermittently rotating the work support includes an oscillating member driven in one direction by the driving means for the reciprocating crossheadand a weight to bias the oscillating member in a direction opposite tosaid onedirection.

6. A machine for press-fittingpins in a plate comprising, in combination, a. rotary a work support, means for-intermittently rotating said work support to'presentithe work to the operatingposition, means for retarding the motion of the work support, means for locking said work'support during the rest period, means mounted in said work support for supporting the pins, means for supporting the plate above said work support, and means for forcing-the plate over the pins to press-fit the'pins in the plate.

7 A machine according to'claim 6 in which the rotary work support has a plurality of notches in the periphery, inwhich the interniittentirotatingmeans cooperates with each notch iii-succession, andin which the locking means cooperates with another of said notches durlng the rest period.

,8. A machine according to claim Gairwhrch 'the rotarywork support has 'a substantially I cylindrieal periphery concentric with the axis of rotation,'a1rd inwhich the means for re- 'tarding the rotation of the work support inv cludes a spring urged brake with a concave surface cooperating with the cylindrical periphery of the work support.

9. A machine according to claim 6 in which the rotary work support has notches in the periphery, and in which the locking means vincludes a dog engaging said notches andv a member actuated forrele'asing said dog, said "member being actuated'by the" means inter- 1 mittently rotating said work support.

10. A machine according to claim 6-in.

which the rotary work support has notches in its periphery, and in which the locking uneans includes a dog for engaging one of said notches, resilient means urging said dog into one of said notches, and means for releasing-said" dog, said last means being ac- 1 tuated by-the'means intermittently rotating said Work'support.

' 11. A press comprising, in combination, a

rotary work support having substantially U shaped notches in the periphery,U-shaped hardenedsteel members fixedlyattached in" said U-shaped notches, an oscillating arm, a

' pawl'mounted on said arm so constructed and arranged as to engage saidU-shaped mem bers, means for oscillating said arm whereby the pawl rotates the work support intermitoomprising, in combination, a movable; work support, means for moving said Work support pins on: said-work support,'mea ns for supporting a plate to be press-fitted upon said,

1 work support in working po'sition, a reciptently to -presentwork pieces to an operating position, and a reciprocating meanscooperat-' .ing with the work support for carrying out an operation on the work piece.

v12; A. press for stakingpins 111 a plate,

intermittently,-: means for supportingthe pins, said means supporting the plate so that the headset said pins extend through aper tures in said plate, an-xanvil supporting the rocating crosshead with recesses aligned with the pins,'said crosshead; forcing the plate upon the pins so as to press-fit the pins into the plate, and meansfor ejecting the assembled plate and pins from the crosshead asthe crosshead recedes from work ng peertion. v

13. Asn'iachine for press-fitting pins into' an insulating plate for use in automatlc.

timers comprising, in combination, a movable work support, means for supporting a plurality ofpinsarranged in groups on said Work support, means for supporting a plurality of plates, each of said plates to be press-fitted upon each group of pins, each plate being supported so that the heads of the pins in one group extend through apertures provided therefor in said plates, areciprocating crosshead, means forv guiding thecrosshead so thatthe pins in one group of pins are'received 1n recesses 1n the crosshead,

the crosshead cooperating with the Work sup port during a rest period ofsaid work support to press-fit the plate upon its group of 7 ins and means for e'ectin the ins and "plate from the crosshead as the crosshead recedesfrom Working position,and means for movmgthe worksupport so as to position another Plate'and group of pins in operative" position; g

14. A machine for" press-fitting pins lllilO' an insulating plate for use in'automatic timers comprising, in combination, work holders,

each work holder supporting aplate haV- ing a plurality of apertures and supporting a plurality of pins with the heads extending through the apertures in the plate, means for intermittently moving the Work holder along a plane into'a-working position, means for forcing said plate in a direction nor- "mal to said plane so as'to' press-fit the'plate upon the pins. 1 15;The method of pressfitting pins into an insulating. plate for usein timers comprising'the steps of inserting pins into a work'holder, placing a plate on a'support so that the heads of the pins extend through apertures in saidplate, moving saidpins,

saidi plate and said work holder bodily along one plane'to a work'position, forcing the plate at right angles to said plane whereby the plate is forced upon thepins.

16. The method of press-fitting pins into an insulating plate for use in timers com'pris 109 mg the steps of inserting the pins into Work holders, placing a-- plate on a support so that the heads of said pins extend through apertures in the plate, movingthe plate and pins bodily along one plane to a work posi' tion, forcing the platealong a normal to said plane whereby the plate is'press-fitted upon said'pins', moving the plate and pins away from'the work position to permit'repeating the process upon another work plate 11 and group of pins.

, 17*. The method of press-fitting pins into an insulating plate'for use in timers comprising the steps of inserting pins into supports, placing a plate ona support so. that the heads of said pinsextend through apertures in the plate, and pressing the plate upon the pins whereby the pins are press fitted into'the plate; I i

18. The method of press-fitting ing 1 5" support with a reciprocating cross head, said cross head having a recess for receiving the pin, and a pin aligning means mounted in said recess, said pin aligning means being provided With aconical shape recess cooperating with the end of the pin to properly align the pin With said recess.

20. In a machine for press-fitting pins into a support, comprising the combination of a Work holder with a reciprocating cross head, said cross head being provided with recesses for receiving the pins, and a spring urged pin aligning and ejecting member mounted in each of said recesses, said member being pro vided With a conical shaped recess cooperating With the end of a pin to align the pin With the recess in the cross head.

In testimony whereof I hereto aflix my signature.

ALVA W. PHELPS.

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