US1915749A - Gear polishing machine - Google Patents

Description

June 27, 1933. T. J. MULLEN ET AL GEAR POLISHING MACHINE 4 Sheets-Sheet Filed April 28, 1930 INVENTORS. TJ. MULLE/V, 9 w. c. POWELL.

L.' Q l A TTORN E X June 27, 1933. LLEN Er AL 7 1,915,749

GEAR POLISHING MACHjINE 4 Sheets-Sheet 3 Filed April '28, 1930 i -EL A I. w, MI I I' l TJMULLE 9 ATTORNEY Fetente June 27', 1%33 EHGMS r1 M'ULLEN AND WILL G. PQWELIL, 01H DAYTON, QHIQ, ASSIGHQES IG QSCAR M. EGGCK, DOING BUSINESS AS THE CITY 6: roonwonns, F DAYTON,

' 1 v seen rorrsnrno mourns e puesomeree u e: es,

This invention relates to a machine for polishing geers or for like purposes enol one objector? the invention is to proviso such o machine which will quickly and eficiently polish a. gear and which will not upon e. large another polis ing member and for eolvencing the gears which are to be polished in timeol relation to the movement of the movable polishing member.

A further object of the invention is to provide such e machine which will be simple in its operation, easily controllecl and which will be of at strong (lureble cheracter.

ther objects of the invention will eppenr us the mechanism is describe@ in oleteil.

ln the accompanying drawings l is a front elevation of e niechine-emboiying our invention; Fig. 2 is e. side e'levetion or the some; Fig. 3 is s. top plen view of such o inechine; Fig. l is e trensverse sectionelwiew telren on the line 4: 1- of Fig. i; Fig. is e vertical sectional view taken on the line 5-5 of Fig. 4:; Fig. 6 is a sectionel detail view telren on the line 6-6 of Fig. tnF-ig. 7 is e sectional. detail view taken on the line 7 -7 of Fig, 5; Fig. 8 is e front elevation of the controlling mechanism for reversing the olirection of rotation of the polishing members; Fig. 9 is o sectional detail View of the reversing mechanism; Fig. 10 is a plan view of the polishing members showing it gear in position to be polished; and Fig. ll is a detail view of the conveyor actuating device.

lln these drawings We have illustretecl one embodiment of our invention one hove shown the some as applied toe geerpolishing snow chine but it will be understood that this embodiment hes been chosen for the purposes of illustrotion only and that the mechanism may take verious forms and may be used for various purposes without departing from the 5 spirit of the invention.

As here illustrated the machine comprises a base or eolestel 10 on which the various ports of tie operating mechanism ere supported. in this machine we utilize a plureality of operating members, preferably three, which are so arranged that when in their operative positions all of them will engage cno not upon a single article. As here shown, the operating members are in the form of toothezi polishing members adapted to engage end to interrnesh with the teeth of e geer which is to be polished; 011s of the polishing members, ll, is mounted for rotel p tron about it normally fired ems enol the other 40 two olishin members 12 ere mounted for p a 7 9 J7 bodily movement towerd and rrom the polishing member ll. While the polishing memhere 12 ere in their retrecteol positions e gear. 2 M ispleced in such relation to the polishing member ll that when the polishing members 12 ere moveu towerd the polishin member ll all three polishing members will be caused to engege the gesr which is to be polisheol.

The polishing members ere rotated. first in all one direction enol then in the other direction to polish both sides of the teeth of the geer.

In the position of the ports shown in 4: one 5 the polishing members l2 ore in on inner position close to the polishing mernher Ill, to set on u very smell gear, while in Fig. 10 the polishing members 12 ere spec so from-the polishing member 11 s. oilstsnce sufiicient to receive end not on e lorger m ries the polishing member 11 is trunsversely aijusteble to eccommodete it to gears enrl polishing members of olifierent diameter.

As here shown, the housing 1 2 for the shaft ml lit) 13 is secured to and, if desired, may be formed integral with, a plate it which is slidably mounted at the lower side of the housing 15'. The plate 16 has an upwardly extending lug 17 provided with an opening into which is threaded a screw 18 which is rotatably mounted in the end wall of the housing, held against axial movement with relation thereto and provided with a hand wheel '19, whereby the plate and the shaft 13 may be adjusted. A locking screw 20 is threaded into the up er art of the lug l7 and extends upwar ly t rough a slot 21 in the top wall of the housing and through a plate or washer 22 resting upon the top wall or" the housing and has mounted thereon, above the plate 22, a nut 23 by means of which it may be rigidly secured in position to hold the plate 16 and hearing it against movement. lltotatably mounted in the housing 15 is a driving shaft 2d having driving connection with the shaft 13. ds here shown, the shaft 24 is provided with a worm 25 which mesheswith a wo wheel 23 on the upper end of the shaft 13. @ne end of the shaft 2 projects beyond the end of the housing 15 and has mounted thereon a belt pulley 27 to receive a belt 28 by means'ot which it is connected to the shaft 29 of an electric motor 30.

The motor 30 is of the reversible ty e and is controlled by a reversing switch, w ich is not shown but which is enclosed in a casing 31 and comprises in part an actuating member or shaft 32 which projects beyond one side of thecasing. By manipulating the actuating member or shaft 32 the switch may be initially closed to cause the motor to rotube in one direction, then shifted to a position which will reverse the flow of current through the motor and cause the latter to rotate in the opposite direction, and may then be moved to a neutral position which will open the circuit and interrupt the operation of the motor. In the present device, the initial operation of the switch actuating member, to place the motor in operation, is effected manually and to this end an operating handle 33 is connected with the actuating shaft 32. The reversing and stopping movements of the switch are imparted thereto automatically and the mechanism is so arranged that the polishing member will be given a predetermined number of rotations in one direction, then reversed and given a predetermined number of rotations in the opposite direction and then stopped, To accomplish this we have provided a controlling mechanism which is driven from the mo tor. As here shown, a transverse shaft 35 is journaled in the bearing 33 carried by the side wall of the housing 15 and has at its inner end a worm gear 3'? meshing with a worm 33 on the driving shaft 24. The shaft 35 projects beyond the side of the housing 15 and rest res has mounted thereon a controlling member or disk 39 which is so connected with the v shaft that it will normally rotate therewith but the connection is preferably a frictional one, as shown, so as to permit the shaft to have movement with relation to the disk, as will be hereinafter explained. Arranged axially of the controlling member 39 and projecting beyond the outer face thereof is a stud 40 which is rotatable with relation both to the shaft and to the controlling member or dish. As here shown, the stud has a part 41 extending into a recess in the end of the Elli shalt and is held against axial movement by contact with a boss 42 in the closure plate for the housin 4:3 which encloses this part of the mechanism. llheshaft 35 has driving connection with the. controlling member or dislr 39 but this connection is preferably in the nature of a sh connection to permit the shaft to rotate with'relation to the disk under conditions which will hereinafter appear. For this purpose the shaft 35 is pro vided at its end with a disk-like enlargement or'plate lll which is rigidly secured thereto and may, if desired, he formed integral therewith. This plate Md is connected with the dish? by means oil a ring or collar 145 having an inwardly extending flange M6 which overlaps the rear face of the plate ltd on theshatt. A ring oi fiber or other triction material M7, is interposed between the bangs M6 and the plate lt land a disk of tithe ring toward the disk and thus establish a firm frictional connection between the shaft and the disk. Mounted on the stud ill and extending radially therefrom is an arm M which is preferably slidably mounted in a transverse opening in the stud. Pivotally connected to the outer end of the arm 44 is a link t5 the other end of which is rigidly secured to the switch actuating shaft 32. The

controlling member or disk 39 is provided with suitable parts arranged to engage the opposite sides ot the arm M and actuate the same, these parts being preferably adjustable with'relation to the dish to properly time the operation or the arm. As here shown, these parts are in the form of studs 43 and t? ed justahly mounted in an annular groove 523 in the face of the dish.

1? Mill not ltd

When the actuating handle 33 is operated.

to close the circuit and plate the motor in operation the hnlr d5 will move the arm id to the full line position shown in Fig. 8, the

arm 44: sliding in the stud 4:0 to compensateishing member has made the desired numberof rotations the stud id on the disk 39 will engage the erni 44 end move the some to the dotted line position shown at Me in Fig. 8 and this movement of the arm will cause the link so to set-no e the reversing switch to polishing members are carried by blocks 51 reverse flow of current through the motor thus csuse the motor shoft to rotste in the opposite direction which, of course, causes the polishing member and the dish 4% to rotate in reverse directions. When the polishing member has made the desired number of rotations in s reverse direction the stud e? on the disk 39 will engage the arm 44 and move the some to the position shown in dotted lines at 4% in Fig. 8 and this movement of the arm will cause the link 45 to turn the switch actuating shett 82 to its neutral position, thus interrupting the operation of the motor and of thepsrts connected therewith. Due to its momentum the motor will have s certain smount oi movement after the switch has been moved to its open position Tout the frictional connection I between the sheit 35 and the dish 39 will permit oil this further operation of the motor without ntlecting the positions of the several parts of the controlling device. The switch may take various forms and insy he provided with any suitshle means, such as e coin, for so controlling the switch shaft 32 that the switch may he moved from sterting position to reversing position, it heing carried across the neutrel position hy momentum, and then moved from reversing position to neutrnl position and stopped in neutral position, the slip connection permitting the continued movement of the motor loy momentum. Pressure applied to the handle 33 will forcethe switch'out of its neutral position to the starting position.

The two bodily movable polishing members 12 are carried by as supporting member 49 which is slidshly mounted in suitehle guideways 50 on the main frame of the structure and are freely 'rotstshle about their individual ones. In the present device, the polishing members 12 are not. provided with driving mechanism but are rotated by the gear which is being polished and which is rotated by the positively driven polishing member '11. In order to accommodate the polishing memhers 12 to gears of difierent diameters these slideloly mounted on the supporting member the 49 and provided with means, such as screws 52, for rigidly seciiring the same in adjusted positions. Preferabl the forward edges of the supporting mom or converge inwardly. Any suitable means msy be provided for imlpitting movement to the supporting memr to move the polishing members 12toward and from the polishing member 11. Prefthe other. A stud 56 rnonnted on e fixed part of the apparatus extends downwardly through an opening 57 in the supporting member or plate 49 end pivotelly supports on arm 58 which extends across the piston rod and is provided with an enlarged portion 59 arranged between the stops and having rounded edges tov engage those steps. lhe

free end of this erm is connected "by a link 60 with e. supporting memher 4:9. in the present instance, the arm '58 is arranged below iston rod and 8. second short arm 61 is ri i ly connected with the sun 58 end is provi ed with an enlerged end srrsnged between the stops 55 on the upper side of the piston rod, The admission of air under pressure to the cylinder 53 is controlled by e. suitshle device errsnged edjecent to the operetors station and this device preferably comprises n foot opernwoll valve. its here shown, on sir pipe 62 leads from. s suitehle scores of sup-- ply for air under pressure, not shown, to e velve 63 which is nrrnnged in the lower part of the hose or pedestnl l0 and provided with n foot lever 64: by means of which may he opereted. A. conduit 65 leads from the velve to the cylinder 53 end communicates therewith on the innerside of the piston so thetwhen the vslvev isopereted to connect the conduits 8% end 65 the piston and the supporting member 49 will he moved outwardly. When the pedel is released and the velve returns to its normal position the cylinder is connected with an exhaust pipe 66. A conpad duitfi? -leedsto the cylinder 53 on the outer side-of the piston and serves to admit air thereto {or the purpose of moving the piston,

and the supporting member 49 inwardly. In the present arrangement, the conduits 52 and lie 67 are in constant communication with the outer end of the cylinder but the air is delivered to the cylinder under a pressure substantially less than the pressure of the air deliveredon the inner side of the piston by the conduit 65 so that when the valve 63 is opened the high pressure eirflwill force the;

- iston outwardly a ainst the lower pressure in the outer end the cylinder, and when the valve 63 is closed and the conduit 65 connected with the exhaust the low pressure air will actuate the piston and impart inward or operative movement to the supporting member. As here shown, the conduit 67 is connected with the supply pipe 62 but has interposed therein a pressure regulator 68 by means of which the air pressure may be reduced to the desired extent.

ile the supporting member 49 is in its retracted position and the polishing members 12 are spaced from the polishing member ii, the gear to be polished .is placed in position to he engaged by the three polishing members. The gear may be placed in this position in any suitable manner but we prefer to provide mechanical means for feeding the gears to polishing position so that the device will act on a large number of gears in rapid succession. For. this purpose we have employed a conveyor for supporting the gears and movin the same into operative relation 95 to the polishing members. This conveyor may take various forms but is here shown as an endless belt 69 supported by pulleys 70 and having a series of studs 72 mounted thereon and spaced apart lengthwise thereof. M) Tu the premnt arrangement these studs entend through the endless belt and project for some distance heyond both surfaces thereof. i The outer ends of the studs are provided with reduced portions or intles 73 to 35 enter the central openings in t e ears and rotatably support the latter. in up r stretch of the conveyor belt extends just filow the several polishing members and the studs 72 are of such height that a gear mounted on one of these studs will be supported in proper operative relation to the pollshin members. The conveyor may he advanced in any suitable manner but it is preferably advanced step by step in timed relation to the movements of the supporting member 49 which carries the polishing members 12, the movements bein studs 72 with its supported gear will be moved into operative relation to the polish- W ing members each time the sup orting 'mem her 49 is retracted, so that wen the supporting member and olishing members are again moved to their orward positions there will he a car in position to be engaged thereby. T e actuating mechanism here shown comprises an arm 7 d pivotally mount ed on avertical axis beneath the supportin memher t9 and having at its tree end a paw ordog 75 which is provided with a nose 75o to engage the studs on the inner side olt'the belt and advance the helt when movement is imparted n A it acts on time into ment wi he studs andthe out nose lilo nor/sled so when lit lit

dill

the pressure on thjp so timed that one of the inm tes is moved to its initial position the nose of the pawl ride ,over the stud and will then he moved into operative engagement therewith. The actuating arm is has an elongated hub, 77 which is mounted on a vertical. shalt l8 and this hub is provided with a circumferential recess arranged to provide a shoulder 79, which shoulder is intersected by a slot 80 in the huh, The huh is arranged in line with the piston rod 54: and this red extends through the slot 80 in the hub and has on its inner end a head 81 arranged to engagethe shoulder 79 and rotate the hub whenever the piston rod is moved in an out ward direction, to retract the supporting member 49. This movement of the head imparts operative movement to the operating arm M and causes the conveyor to be advanced one step. Any suitahle means may he provided for restorin the actuating arm to its initial position w ere it will engage the next succeeding stud on the conveyorhut this urpose. cum erential recess arranged to provide a shoulder 82 which is engaged loy the end of a plunger 83 mounted in an air cylinder 84 adapted to he connected with a suitable source of supply for air under pressure, not here shown so that when the next forward movement of the piston rod moves thehead 81 out of engagement with the shoulder 79 on e11 83 Will IOtdl/B the hub to restore it e acuating arm to its initial position. 1? ierably the cylinder 84 is in constant connection with its source of air supply and contains air under pressure at all timm butthe pressure is suficiently low to permit the rotation of the hub and ot the actuating a hy the piston rod 54 when the latter is retracted. A stop 85 is arranged in the path of the actuating armit to it ill we have 'providedlluid operated means for The huh 77 has a second cirits movement by the plunger 83 and; in the present instance, the arm has mounted therein escrow 86 to engage the stop and which may be adjd to accuratel position the dog with relation to the stu on the conveyor.

It ill be apparent, therefore, that in the operation oi the machine, latter a series of gears have been mounted on the conveyor studs, the loot valve 63 is actuated-to mm air to the cylinder 53 and thus cause the polishing members 12 to move into their operative positions adjacent to the polishingmemher ll. The conveyor having n actuated when the supporting memher it was last retracted'thero will he a gear in position to be engaged by the several polishing members. The switch actuating shaft is then manipulated to start the motnrc After the motor has the polishing memhers in one disod and will to munher of rota or nersveo toward. end from the first mentioned operet= ing member end having moons for'irnperting operative movement to said ec'tneting erm when said supporting" member is moved from said operating member, and o fluid opereted device acting on sold sctnetin em to re- I store the some to itsv initiel position.

vice to odvenee conve or 6, In at machine of the clierecter described, an operating member mounted for rotetion about s norinelly fined oinis, moons for ostenting said operating member, s movehle supporting member, e second operating rnemher rotetebly mounted on sold. snpporting insinher and movehle therewith tovverd from the first mentioned operating member, a conveyor having moons for supporting or pin rality of? articles to he opereted on end orrenged to move seid erticles snocessively into operative reletion to seid operating inernlcers, e pivoted ectnsting srrn having e to en gage end ectnete seid conveyor on having; huh provided with e shoulder, or fluid onereted device connected with seid inovoh e support to move the some tovvnrd end from the first :orientioned operating meniher end having moons for importing operetive move ment to said sctueting errn when snid supporting member is moved from seid operating member, s timid operated device noting on seid actuating erm to restore the some to its initial position, the lest mentioned finidop ersted device being subjected to e constsnt pressure less then the opereting pressure the first mentioned 7 operoted device,

means tor controlling the operetion o'l first mentioned finid operated device,

7, "in machine of the oherocter described, an opereting member mounted for rotntion shout To, nor-molly tired enis, supporting member mounted for reciprocotory more torverd end from snid operntinp? her, other opereting members carried o3 l rn'ovehle with snid supporting inernhen'e s.

operated device tor ectneting seid snpportinn; member, toot operated vslve to control theoperetion of said fluid operoted device,

ing mechenisrn to scheme i, and lid controllers etion of s driving mocha;

opere memher ehont o normally nit-so ti g; nsenther, o 0 g ed I n second operetinp; h

' tently meons,1zneons for rotetahly supporting o gear in operative relation to said opereting memhers, driving mechanism operetively connected with the first mentioned opereting meniher, menuelly opereted means for initiating the operstion oil seid driving mechenisrn, moons controlled by the operation of seid driving mechenisrn to smtornetieellq reverse the direction of rotation of said opereting member and to snhwqnently interrupt the operetion oi seid operating member.

9. lo a geer polishing niechine, s plnrolity ofrotetehle polishing members monnted snhstentielly in at common plane, moons tor rotetim. one of said polishing members, moons or moving one of seid polishing menihers trsnsverselp to its evils toward end from enother of said polishing members at conveyor heving moons for supporting e pinreality of goers in spsced reletion end orronged to move said gears hetvveen seid polfishing members, end means for intermittently opereting said conveyor in timed relotion to the movements of said transversely movehle polishing member to move said goers successively into operetive reletion to said plurality or in spaced relotion end to move said gears between sold polishing" members, end means to intermi conveyor tion to tie trensverse movements of 'soid pol ishing mernher to cease the sense to move seid into operotive relation to soid polishing members, to supportthe some during the polishing operetion end then Wll3l1llltlW from seid polishing mono nine otthe chereeter descrihed,

pla horn when errenged to revhi to op i or" on in rnernoer, driving 1 one oil ope? w to c in'operetcve enertieie, coin levy driving" mechanism to reverse ti el intstion oi? soid driven operetinpg her the some to operate onseid srti in. the'ooposite direct on,

i it M, in rnsransne oi tne esenhed,

operating niloers mountedthey oi till ltlll lltl supporfiog member end. movable therewith eovverd end from the first memionedl oper= ezing member, en emfilless conveyor herring e plurality of studs specedspert lerngfshwiee thereof endl ee ch provided! with meens for supporting on erfcicle too be operated on said conveyor being errengezi to move said ereielles successively into end onto)? opereeive refleiuon' to sold; operofamg menrri'rers e olevioe adapted to emgege e, stand on we conveyor agoilefiee.

'ber soteficebly moumtefl on se-id supporting member end movebie oherewifsh toward and from the firsfr, mentioned operating member, 1

e conveyor having e phnmlity or" studs spaced spore lengehvvise thereof on each provided with moons foe supporting an article to be operator? on, said conveyor being arranged! to move staid erftiekes successively into operetive refiefiion wifizh seioi operating members eeflzueting erm heaving e pert to engage o; stud on seioi conveyor end emanate seici eonveyor, on operefiing device, end. meens for eonneeting seidr operating (ieviee with seicl movable suppose emi Wifilh sew actuating erm.

in testimony whereof, they eifix their sig= neisores heeeflvo.

THQMAS J. MULLER 'WIILLARD i3. PQW'ELL.

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