US1101505A

US1101505A - Grinding-machine.

Info

Publication number: US1101505A
Application number: US72652912A
Authority: US
Inventors: Ragnvald M Nicolaysen; Harley H La Vercombe
Original assignee: Individual
Current assignee: Individual
Priority date: 1912-10-18
Filing date: 1912-10-18
Publication date: 1914-06-23
Anticipated expiration: 1931-06-23

Description

R. wg. NIGGLAYSEN & E. H. LA VERGUMBB.

GBINDING MAGHINE.

APPLxcATIoN FILED 0mm, 1912.

Patented June 23, 1914.

-4 SHEETS-SHEET 2.

R. M, SGSYEEN :YL Hf EL 'LA VERGMB. @Hmmm Mmmm PILIOAII'XON FILED D'G. 18 19112.

Patented yJima 23, 1914l 4 SHEETS-SHEET 3 @BINDING MACHINE.-

APPLICATION FILED 0G1.1B, 1912.

mama June 23,1914

4 SHEETS-SHEET 4. l

Efff1 a susa s [n van fers' GRNEING- Specification ai 'Letters Satent.

Application filed October la, l. Serial No. 726,5?3.

T0 all whom t may coment; feed mechanism and prevents further cut- 55.

Be it known that we, RAGNVALD M. Nico-y ting. Larsen, a subjectof theKingof Norway/ganci lndetail, A is a suitable frame, ton which HARLEY H. La VERCOMBE, a citifzen of the ismounted the Work-holding spindle l, pret- United States of America, resi-ding at De erably Iarranged with its axis vertical. troit, in the county of Wayne and State of C is a reciprocatory slide mounted upon Go Michigan, have invented certain new. and guide-Ways D uponthe frame; and E isth useful lmprovements in Grindinglachines, Vgrinder arbor which is vmounted upon bean of which the following is specification, ings F on said slide. rllhe artis ot the arbor reference being had therein to the accom- E is transverse tothe axis of the arbor B, panying drawings. and provision is made for adjustment of l65 The invent-ion ,relates to grinding maboth the plane of the grinder and of the chines and has for its particular object the Work. obtaining of a construction adapted for the AFor adjusting the Work-holding arbor B, renewing of millingcutters. it is provided with a telescopic extension B,

-ii'here milling cutters are formed by ma-. which has threaded engagement with the lo chining the annealed metal and subsequently main section and is vheld in different posihardening, the cutters thus formed may be tions of adjustment by alocir-nut This sharpened by grinding on an ordinary scctinn B has a shank portion B3 on which grinder Wheel, but eventually the teeth will the Werl; is placed, a 'clan'ipii'ig--nut l@ enbe completely ground away, which is the a threaded portion of said shank 75 limit of life of the cutter. The blanks can- .eri ing` to clamp 'the Work, and a bushingnot be satisfactorily annealed and re-cut, as collar B centering the same. y there is great danger of crackin, partici@ lpen the lower end of the arbor B is larly when the metal is re-,hardenedl This is mounted an indexing dish G, which is prol especially true of high-speed steel. vided with a plurality of series of accu so 'Vith our improved grinder the cutters lately-spaced apertures a at different radial may be refashioned-'Without annealing and distances from the center. their life thereby greatly prolonged. G is a reciprocatory rocher member, uh ln the drawings: Figure l is a sectional @ruined upon the arbor B, and. carrying ay plan View ot the machine; Fig. 2 is a iondoe' (lf3 V:for engaging the apertures ct in the 85 gitudinai ection thereof; Fig. 3 'is a cross index plate. rihis dog is mounted in an ad section; D. Li is View similar to Fig.' l, Justable *block G4, slidably engaging' the with the section in the plane oi' the arbor; rocker-arm Gf, and provided with a shank and Fig. 5 is aside elevation of the feed .G5 'tor adjust-ing it inward oroutw'ard. The mechanism, i shank is provided with a series et notches 9e Generally described, our improved grind- G6 which are engaged` by a pointedY pin GJ ing machine comprises a rotatively adjustengaging a bearing G8 on the rocher G', and able Work-holding spindle; indexing mechheldin engagement by a threaded plug Gf anism, controlling the adjustment t-herebearing thereagainst; While a spring G10 of; a' grinder Wheel; means for intermitserves to disengage said pin 'when the prcs- 9.5 tently *reciprocating 'said' grinder Wheel. wsure is released. rl`hus, by engaging the pin l toward and from the periphery of the y in different notches Gr, the dog' is regis- Work upon said holder, said means optered with diiierent series of agertnres. erating alternately With the operation `of For reciprocating the roch-er fd', and for said indeX'inG mechanism; and the maengaging and disengaging the dog @t3 cams loi) chine is further provided With automatic are'provided Which are preferably arranged feeding means by which, at the compl'eupon a'common shaft This shaft extends tion of each cycle of the Work-holder, the transversely of the frame A and is driven by limit of forward movement of the vgrinder any suitable mechanism. (not shown). is adjusted so that t-he successive grinding H is a cam upon the shaft if, which yenina cuts will be deeper. This action continues gages a reciprocatory slide l mounted in until the-required depth of cut is obtained, the frame, said slide having a transverselym whereupon an automatic trip disengages the i extending slotv L therein.

-49 rod is 12 is a.l pin' having a squared portion?) engaging the slot I and a rounded portion c passing 'through the adjustable block G4 and hollow to receive the dog G2.

I3 is a spring operating upon the slide I in a directionopposed to the cam H', the arrangement being such that during-the 'rotation of the camvthe slide I Will be reciprocated, which will imparta reciprocat- '10 ing movement to the pin I2, block G4, rocker Gr and dog G3; while the segmental path of moyement of the rocker, pinl and dog is permitted by a transverse sliding movement l -of the pin in the slot I. l`Upon the' slide. I is 'L5 mounted a rock shaft J, having a rock-arm J vfeathered thereon, said rock-arm being attaeed at its outer end to. the shank 'of the do 3.

' 2 is' a: second rock-arm att-ached to the '20 `shaft J, and which extends into operative relation to a cam H2 .upon the cam shaft H.

The cam H2 'is smtimed as toactuate the rock-arm J2, andthrough the medium ofI the rock-arm' J will withdraw the dog G3 after thecompletion of thelforward movef;

ment of the slide l and befmfe the return thereof. Thus through the combined action 'of the cams H and H2 the vindex disk G "is periodically rotated with a step-by-step '30. movement, which adjusts the work uponthe holder B to different positions` or grinding.

` For moving the grinder into engagement with theV workand for withdrawing the samewhenthe work holder is to be ad;l

justed, an intermittent, reciprocatory movement is imparted to the slide C. E1s shown, vthe shaft. H has mounted thereon an eccentric Hv3 engaging a rod K, which is connected to-a threaded rod L. :This threaded engaged by a' correspondingly threaded socket member L,-'Which is ro tati'vely lsecured ina bearingM upon aslide M; The slide M is adjustably con nected to the 'slide C, through the medium .i4-Spf a clamping bolt N, which has a head N 5 al feed mechanism for gradually changing the. limit of inward movement of the grinder, so that the .grinding cuts Will be successively deepened. This feeding is effected by the rotation of the socket ,mem-

550 ber j inits bearing M, Whifh 'in turn is operated byV mechanism ot tie T'following construction: L2 is an extension of the member L,`which is socketed to telescopically Vengage a rod O, which is rotatively fixed' by a feather 0. The rod O extends through,

the ratchetlfwheel P2 and shaft P.

prevented,

"menaaa a bearing O2 in the ame and is connected by a Wormcaring Pwith a shaft P', having a ratchet-w eel P2 thereon. Q is a ratchetlever carrying a dog Q for engaging the ratchet-whe@ P2, said lever being ulcrumed .upon the shaft P and being intermittently reciprocated by a r'od Q3 connectedto a lever Q, extending into the path of a cam Q on the periphery of the indexin disk G. Thus once in each complete revoltion of said indexing disk. the cam Qs will actuate the lever Q4', rod Q3, ratchet-lever Q and dog Q', to impart a rotative movement to The amount of feedmay be variedby changing the point "oattachment of the rod Q3 to the ratchetlever Q, and, as shown, a plurality of apertures Q2v are formed in the vlever for engagement of the connecting pin.

With the mechanism just described, the depth of out of the grinder is increasedl after each complete revolution of the workholder, and this continues until the req'uired .depth is obtained. To prevent overvcutting I have provided means for automatically throwing out the feed mechanism,

which may be set for any required depth.

of cut. This comprises a rotating cam or trip-lever R, mounted upon the ratchet-lever Q,"and' connected to a notched feed-Wheel R engaged by a wheel R2 on the shaft P.

j Ra isa tooth on the wheel R2., which once in eachrevolution of .the latter engages a notch in the Wheel R2, impart-ing a limited rotative movement thereto before disengagement-, The trip-lever -R is adapted to engage with. a pin vor lugI S upon the' dog Q to Withdraw said dog from the ratchet- Wheel P. vSaid'member R is also preferably clamped to the wheel R so -as to permit of a relative adjustment thereon, and the arrangement is such that by properly setting the member any desirededegree of feed maybe imparted to the grinder before the dbg Q will be disengaged and further Afeed With the construction as described in use, the operation is as follows: The worm mill'- ing-c'utter or other blank to be re-cut, is first placed uponthe Work-holding spindle Band the latter is longitudinally adjusted if necessary to properly center the blank in relation to the arbor of the grinder, this 'adjustment being eil'ected by screwing the member B uponI the member B and clamping by the lock-nut B2. When the Work is properly set, the grinder wheel is set in relation thereto by loosening the clamping bolt Nfand adjusting the grinder wheel into Contact with the periphery of the blank; while the rotation of the cam shaft H `mil' cause the reciprocation of ,the slides' M and@ through the" medium of the eccentric lie.' and rods K and L; andvl'during the ,interval When rthe slides .are at the outer" end of their Inoveinward to carry the grinder Wheel. in to theV -ivillfl correspondingly deepen the grinding Worlg, it will effect a grinding ofl a diferent portion of the periphery of the blankuntil the eompletion'of a revolution of the latter.

When thisoccurs l thecani Q; operating the lever QQ rodQa' and -ratchet-le,ver Q, will cause a rotation? of. the ratchet-Wheel P2,-

s'haft P1", Worm-gearing P and rod (L the latter communicating. movement from :the eather.; 0 and' e'iitensionlfto the member. "Lf, jvhch .is slightly rotatively adjusted. This'a feed, preferably Varyingfrom one.v

to'- five yor six'thousandt'hs, is produced-.Which ents jin the 'second revolution ci" the lblank 'and the operation' :will thus continue until.

tirati-@Jever D disengages .the dog. Q-from the,ratchet'-vvheel P2, which will stop further. 'a'ctiloiil4 The blank may thenbe disengaged :from-the spindle'B and the machine re-'set ,by turning'back the feed mechanism throughv the medium of a knoborhandle P4' on vthe gshaft'Pf". 'jnsti'ng the grinder Wheel axiallyto suit the requirements of different, blanks, and-to this fend We-have -provided-'.the' following construction; The. grinder arbor E is journaled 4.iiifth bearings F, and comprises 'an inner shaft E and: asurrounding sleeveEzL The i-.olampiiig collars E3 tor the grinder" Wheel- 'are securedto the member E', While the j our- 'sleeve 'nienilee` E2.

nals'and. the drive-pulley E? are uponthe' Esis a shank extending u outward from the shaft E beyond one of the bearings-fil, and carryingat its outer end an i jantilfrictioinball thrust hearing T, Whichis carried 'b'yia housing T. fisattachd td a l threaded sleeve T2 surroi'md-y ing the"sh'a'nl4 E5 and 'engaging a nut T? arranged.betweenv urcations of ene of the Vbearings F. The larra'ngement.is such that adjusting the. nut Tf', the sleeve T2 will be nioved longitudinally and will carry,- with 'it-. the-shank E? and shaftlithereby adjusting 'the position of the grinder-ivheel.

. What-We ciai'm as our invention 1s:

i tative Work-holder, a rotary grinder ar 'rangedin a transverse plane, means for intermittently, relatively reciprocating said- 'Werk-holder and grinder to move the latter toward and from the periphery of the Work,A

l. A grinding machine comprising a roand means operating when the grinder 'is withdrawn from engagement With the -Work for adjusting said. Work-holder rotat1vely,

rlhis housing T yfeed mechanism for periodically increasing' the dept-h of thecut. v j

2. A grinding'machine'comprising' a rotativev Work-holder, a rotaryjgrindeif arranged' in' a vtransverse plane, means forl relatively reciprocating saidl work-holder and grinder to move the latter toward and from the periphery ofthe Work, means operating durN ,ing the interval when saidgrinder isiivithrdrawn from vthe ivorlr, for rotatively 'adjust` 4'ing said 'Work-holder., to present a dii-ferent portion yof the periphery of the Work to said grinder', and' means operating in each cycle ofv the Work-holder. for changing the limit of inward movement of said grinder. to .increase the depth of the cut. j

3. v A grinding machine comprising a rota- 'tive Worloholder, a rotary grinder arranged in a transverse plane, means forfrelativelyv reciprocating said Work-holder and grinder to movethe latter toward and from the pe# ripheryothe Werk,A means operating during the interval' in which the vgrinder is :Withdrawn from the Werl: for rotatively adjustiiig said Work-holder, and feed ineclia-- 'nismgarranged intermediate the grinder and f4. A; grinding machine comprising a rotative vork-holder, a rotary grinder ar- Itfis 'desirable to vprovide means of ad-- '.'ranged inl aj transverse plane, means torre ciprocating said grinder to move the same tovvardand from the rperiphery of' the Work, means operating during the interval in which the 'grinder' isl Withdrawn from the Work' for rotatively adjusting -sa-id Workholder, feed mechanism arranged intermediate said grinder' and its reciprocating means, and means operatingoncein each cycle of said rotary Work-holderv for operating said feeding means to. adjust inward the limit-- of movement of said grinder.

5. A. grinding 'machine comprising a TOE tative Work-holder, a rotary grinder `ar ranged in a transverse plane, 'a reciprocatoryl carriage on which said vgrinder is mounted, adaptedto ymove the latter toward and from 'the periphery of vthe Work, a reciprocating -meniber7V an adjustable connection between said 4reciprocat-ing member and said reeiprof.

reatery carriage,v permitting ci the 'adjust-4 ment of thelatter With relation to thevvorir,

.feed mechanism operating once ineach cycle i fra1ne,'a reciprocatory slide mounted ori-said frame, a rotating arbor mounted .on said' slide7 a grinder-wheell mounted len lsaid ar.-

ilo

ree

bor, ,a rotative Work-holder having'its axis l :transverse to the axis of said arbor, means for adjusting `the Work axially of said Worlrdifferent' portion Aof the p'e. rpheyof he l-Worlr m said grinder. and;

lholdenmeans tor adius'ting .thegrinder ax ially of said arbor, means for reciprocating said slide to move said grinder vtoward and from the periphery of the Work, indexing mechanism 'for the rotative a'dji'istn'ient of said Work-holder, and means for operating said indexing mechanism during the interval in which said grinder is Withdrawn from said Work. i

7 A grinding machine comprising a rotative Work-holder, a reciprocatory slide in a plane transverse to the axis of said Workholder, an arbor mounted on said slide, a' grinder wheel mounted on said arbor, a rotary shaft, a crank-and-pitman-rod connection between said shaft and said reciprocatory slide for actuating the latter, an index- `ing disk u'po'n said rot-ary work-holder, a

reciprocatory paWl fo'r adjusting said indexV- ing disk, and a cam on said rotary shaft for controlling the operation of said pawldurA ing the interval in 4which said grinder Wheel withdrawn from the Work.

v 8. A' grinding machine comprising a frame, a reciprocatory slide thereon, a grinding arbor and grinding -Wheel mounted: upon saidslide, a rotative vWork-holder hav! ing its; axis transverse to the axis ofsaid arbor, a reciprocating member y connected with said slide, a screw feed mechanism in'-` termediate said reciprocating member and said slide, an indexing mechanism for said rotary Work-holder, and a cam on said in- .dexing mechanism operating once during each cycle thereof1 for adjusting said screwfeed mechanism.

9i A grinding machine comprising a' frame, a reciprocatory slide mounted on said frame, a rotative Work-holder arranged with its axis transverse to the plane of said slide,

a grinding arbor and grinderl Wheel mount- -ed on said slide and movable therewith toward and from thesperiphery of the work on said worlcholder, an indexing disk on said work-holder, a reciprocatory-slide adjacent to said disk, a pawl carried by'said slide and -laterally movable thereon for engaging said indexing disk, a rotary shaft, a cam on said shaft for intermittently reciprocating said pawl-carrying slide, a cooperating cam on said shaft for disengagingsaid pawl from said disk, '.a crank-and-rod'connection 'between said shaft and said arborcarrying.