US938803A - Metal-working machinery. - Google Patents

Description

Q @zw 0. E. VAN NORMAN METAL WORKING MACHINERY.

APPLICATION I'ILBD MAR.20,1909.

938,803. Patented Nov.2, 1909.

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INVENTOR,

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c. E. VAN NORMAN. METAL WORKING MACHINERY.

APPLICATION FILED MAR.20,1909.

' INVENTQR.

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ATTORNEY.

- Patented Nov. 2, 1909.

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U. E. VAN NORMAN.

METAL WORKING MACHINERY.

APPLICATION FILED MAR.20,1909.

. Patented Nov. 2, 1909.

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G. E. VAN NORMAN. METAL WORKING MACHINERY. APPLICATION FILED MAR.20,1909.

938,803, Patented Nov. 2, 1909'.

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(hr/ail r G. E. VAN NORMANL METAL WORKING MACHINERY APPLIOATIOK rush uu.2o,1aoe.

Patented Nov. 2, 1909.-

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CHARLES E. VAN NORMAN, OF SPRINGFIELD, MASSACHEUS ET'IS.

METAL-WORKING MACHINERY v Specification of Letters Patent.

Application filed March 20, 1909. Serial No. 484,829.

To all whom it may concern:

Be it known that I, CHARLEsE. VAN Non- MAN, a citizen of the United States of America, and resident of Springfield, in the county of Hampden and State of Massachusetts, have invented certain new and useful Improvements in" Metal-Working Machinery, of which the following is a full, clear, and exact description.

The present improvements in metal working-"machinery are especially applicable in machines comprising as a tool or instrument which operates on the work a rotary grinding wheel available for grinding external round surfaces or-internal round surfaces; and a machine of the general character to which this invention pertains .is one having a suitable supporting frame or base, a bed mounted and having reciprocatory movement longitudinally on the base and having work supporting means, which may be a head stock for a chuck, or a head stock and a tail stock on which the work may be mounted between centers, means for imparting endwise back and forth motions to the bed, and a transversely slidable support on which is mounted a head carrying a spindle for the rotary grinding wheel or other rotary tool and which operates on the work, which splndle has in conjunction therewith means for securing a very rapid rotation thereof.

A leading object of'the invention is to provide an 'improved mechanism for varying, at pleasure, the extents of endwise movement of the bed so that the work mounted thereabove may have comparatively long or short reciprocatory movements in relation to the rotary grinding wheel, or so that, if desired, while the machine is running in its regular way the bed carrying the work will have absolutely no endwise movement, as may be desirable in cases where, for instance, an annular groove is to be ground into a shaft.

Another object of the invention is to pro vide improved means whereby the bed may be temporarily disconnected from the mechanism which imparts the reciprocatory movement thereto, and to provide in conjunction therewith independent means for endwise moving the bed so that the same may be positioned bodily at any desired location within reasonable limits along the length of the supporting frame, whereby on restoring the connection between the bed and its reciprocating means, the work, or the portion thereof to be operated upon, Wlll be in proper relation therefor to the grinding wheel.

Another objectof the invention is to provide in conjunction with the improved' mechanism for imparting reciprocatory movea ments to the work carryin bed, means for varying the speed of operatlon of such mechanism whereby the passes of the work rel'a tively to the grinding wheelwill be compar'a tively fast or comparativelyslow as may be most effective for the desired results. 7

Other objects of the invention are to the end of rendering the'machine entirely practical, comparatively simple and inexpensive ofconstruction, and susceptible of very quick and convenient management.

The invention consists in combinations or arrangements of parts and the constructions of certain of the parts all substantially as hereinafter described in conjunction with the accompanying'drawings and set forth in the claims.

In the drawings :--Figure 1 is a front elevation of. the machine, the tail stock being understood as removed,- and an annular piece,

to be internally .worked upon represented as carried by the head stock. Fig. 2 is a plan view of the machine, the work carrying bed being understood as absent for the purpose of the better disclosing the novel mechanisms,a portion of the frame at the rear being broken away and represented in section for clearer illustration. Fig. 3 is substann tially a vertical longitudinal section of'the complete machine as taken on line 3-3, Figs. 2 and 4,-'the tail'stockbeing shown as in its place on the bed and a shaft-like piecebeing mounted between centers to be eater- Patented Nov. 2, 1909.

nally ground. Fig. 4 is a transverse vertical section'online 4-4=, Fig. 2; Fig. 5 is a Vertical sectional View longitudinally through a rear portion of the machine as taken on line 55, ig. 2, and as seen in the direction indicated by the arrow. Fig. 6 is an end elevation of the machine. Fig. 7 is a perspective view showing the principal portions of the mechanism for reciprocating the work carrying bed .in predetermined varying extents. Fig. 8 is a partial longitudinal sectional view with some parts in side eleva tion, as taken on line 8-8, Fig. 4.

Similar characters of reference indicate corresponding parts in all of the views.

' r the machine.

gaged by the worm b on a horizontal shaft 6 1 support.

- to bind the grinding wheel spindle carrying wheel or other tool provided in the ma- .centrally on the other is somewhat common 'ing under the swinging head, provided with In the drawings,A represents a supporting frame or base of the machine having on the long horizontal top thereof a slideway a for a longitudinally reciprocatory bed B on which the work is mounted and rotated while being operated upon by the grinding chine.

The bed B, as indicated in Figs. 3 and 4, comprises a lower table-like section a and a table-like section a superimposed thereon and connected therewith by a swivel stud a so that the upper section of the bed on which the head stock C and the tail stock C are mounted, may be swung so that the axes of the head stock and tail stock spindles may within suitable limits be more or less oblique to the central longitudinal horizontal line of This formation of the two part bed with one section thereof swiveled in the general class of metal working machinery to which the present improvements pertain.

The base or frame of the machine is provided with arearward extension A on ways of which are mounted a transversely slidable support D for the grinding mechanism,- this support comprising a lower bed-like sec tion D having a rack bar I) engaged with which is a gear wheel 6 on a shaft b which at its outer end has a worm wheel I) en} horizontally and transversely mounted on the right hand end of the machine and provided with a hand wheel b;-such support furthermore comprising the bed-like section D superimposed on the section D and slidable thereon transversely of the machine,the section I) being penetrated by the vertical stud 6 having a head at its lower endengaged in the T-groove e in the sections D the upper end of the stud being screw threaded and receiving thereon the lever nut e the tightening of which locks the one section D on the other one D A head E in which a spindle E for the I grinding wheel a: is mounted for rapid rotation is by its bar-like extension 0 pivotally mounted at c on the upper section D of the transversely adjustable grinding-mechanism:

The part D has a bracket arm extendan adjustable stop,constituted by the screw 0 for determinatively positioning the head when swung forwardly and downwardly for its working relation to the work to be operated upon. 1

The pinch screw or screws 0 are operative head in its properly set position for the working of the machine. The grinding wheel spindle E has small pulleys E" at its end portions; and to the rear of these pulleys E are very much larger pulleys E,

both mounted on the same shaft E journaled in bearings of the part D and rotated by belt and pulley E E shown in Fig. 4. The belts E running around the large pulleys E and also around the very much smaller pulleys E on the spindle E drive the grinding wheel at greatspeed.

Proceeding to describe the novel mechanism for im arting the reciprocation to the bed longitu inally and with varying lengths hereinafter explained. As shown, the slidable bar F has the upstanding separated lugs P, f which have engagement with a depending lug g of a bar G which for the present is to be considered as a part of, and as one with the lower section a of the bed, all so that endwise movements of any extent imparted to the slidable bar F imparts corresponding movements to the bed as a whole, and to the piece of work mounted thereon.

The slide bar F has a transversely extending and depending engagement member h adjacent which is a rotary cam H arranged in a horizontal plane and at the upper end of the vertical shaft H to which rotation is imparted at any speed determined on by means hereinafter fully described.

A lever J is pivoted at 2' on a fixed support 1' therefor, and such lever extends from its pivot horizontally and substantially transversely of the machine over and in proximity to the rotary cam H which is arranged in a horizontalplane and has its cam groove or path 7' upwardly opening receiving therein the roller stud 7' which de pends from the extremity of the lever by which it is carried. The lever has a longitudinal integrally formed rib is, preferably of dove-tail'shape, on which a block L is engaged and slidably guided for movement lengthwise on the lever and having by its upstanding stud k an engagement with the aforementloned transversely extended engagement piece It carried by the slide bar F.

M represents a screw shaft which engages through the said block,-the turning movement of which shaft cauges the block L which carries the stud k to be moved endwise along the length of the lever J to have its position nearer or farther from the pivot z or in some cases, as desired, coincident with the pivot. 7

M represents a comparatively short horizont'ally arranged shaft-section, connected of the work will be lessened 35 by a double universal joint on to the forward end of the screw shaft,this shaft section M having a comparatively small spur gear m thereon; and it may be moreover said of this shaft section thatit is mounted in the journal bore-m at the front of the machine frame whereby it may have a slight degree of axial movement which, incidentally, it

derives by being universal-joint-connected to the screw shaft which has bodily an oscilla tion in unison with the cam actuated swinging lever J.

N represents another comparatively short horizontal shaft below the shaft section M the same having afiixed thereon agear wheel N larger than the one m and said shaft N has a hand wheel N at its outer end, at the front of the machine for conveniently turning it. This speed increasing gearing between the hand wheel N and the screw shaft M is for securing aquick adjustment of the block L in its relation to the lever pivot, although, of course,

t-heshaft section M might be directly operated for a slower block adjusting operaor cylindrical piece, the machine may be run without imparting any endwise movementto' the bed and the piece carried thereby, to

be worked upon, by establishing the con- .efiicient a means manifestly should be in ditions therefor as accomplished 'by,

through the screw shaft,securing a osition of the block coincident with the axis of the lever pivot 1 l/Vhile in the description before given but one transverse engagement piece it has been referred to. as subject to forcing action by the stud lfi'of the lever carried block Lfor movingthe bed in one direction, only, in orderto make the machine adequate and eluded for oppositely endwise moving the bed for the return, passes of work relatively to the grinding wheel; and while for the return movement of the beda spring mightbe retractively employed I- have provided as preferabletheretoand as shown in Figs. 2 and 3 a transverse horizontal depending engagement member h as an equipment of the slide-barF (and which is a counterpart of I the one hwhichis most clearly shown in Fig. 7 and which-has its location relatively tothe' one h so close thereto as to constitute with such part b an opposite wall of .atransas apparent,

block L is positioned compar-- verse channel upwardly into which extends the roller stud of the lever carried block L.

For the purpose of rendering the machine more nearly universally available for grinding cross-sectionally circular pieces of varying lengths andfor grinding at any desired place on the length of the piece, provision is made for temporarily disconnecting the bed from the mechanism which imparts the longitudinal reciprocatory movements thereto, so that the-bed may be bodily slid as far as appropriate endwise in either direction whereupon after the securing'of a proper positioning of the work relativelyto the position of the grinding wheel, the bed is again placed in connection. with the recip rocating mechanism, which has been fully described, therefor.

The expedient last above referred to will be seen to be carried out by provisions'as follows: The bar G hereinbefore once mentioned, is, as a matter of fact, separately formed from the lower section a of the bed and is slidably fitted, in the manner of a gib, in a straight longitudinal way 0 therefor which has the form of a wide groove or channel in the lower portion of the bed.

P represents a block having, at its vertically widened side, an engagement against the rear side of the bar G,-the portion of this block extending over and across the top of the bar, and it is engaged: by the screw threaded stemor small shaft P ,-a shoulder at the outer extremity of which engages against the outer face of the machine frame,said screw threaded stem P having a handle extension P for conveniently turning it. g

By the turning in the proper direction of the screw threaded stem, the clamp block P is caused to bind the bar G sidewise, against the wall of the way in which it is fitted at its front, so that the bed must partake of any endwise movements which the slidable bar F derives fromv the operating mechanism therefon When the clampblock is loosened so that the carriage is slidably free relatively to the bar G, which always remains in its given location, the carriage may be bodilymovedwithout affectingthemechanism WhlCh' nor-- mally operates it, and without being aflected I thereby through means of the engagement with the rack bar Q, thereon of the pinion Q mounted on a short horizontall shaft Q which has a hand wheel Q at its outer end whereby it may be conveniently manually turned. The small gear wheel or pinion Q and its shaft and hand wheel are free and incidental to the regular operation -of the .machine have back and forth rotary movements because of the engagement withthe rack carried on the underside of; the carriage, with the pinion. The vertical shaft H ',+on the upper end of. which the cam H is carried by bevel gearing R, R con nected with a rearwardly located horizontal shaft S on the rear end of which is a disk S T represents a shaft ranging horizontally and longitudinally at the rear of the machine and driven by belt T and pulley T U represents a wheel edgewise' frictionally running on the face of the disk, this wheel being spline engaged on the shaft T which isarranged crosswise of and in proximityto the face of the disk, so that while the frictionwheel must always rotate as one with the shaft it may be positioned for its peripheral frictional engagement on the face machine and provided with a hand wheel a By turning the hand wheel a in the proper direction, the speed of the cam carrying shaft H may be regulated to result in the reciprocations of the carriage and the work mounted thereon for fast passes or slow passes relatively to the grinding wheel as may be best suited to the desired working results.

Referring to Fig. 3, a long shaft-like piece y is shown as being carried between the head stock and tail stock center, and its movements as carried by the bed are on the line of its axis, but if the piecewere to'be ground on, or to form, an external tapered shoulder the upper section of the bed would be swung more or less on its swivel stud a so that the line between the head and tail stock would be properly oblique to the longitudinal-ma dian llne of the machine corresponding to the taper or beveling of the external surface to be ground.

In a case such, for instance, as indicated in Fig. 1, where a hollow cylindrical piece '1) is to be internally ground, such piece is carried by a chuckwith which the head stock is provided, the tail stockis removed by being slid off at the right hand end of the machine and the sliding support D for the grinding mechanism is moved forwardly to bring the grinding wheel to the proper work-' ing position.

This machine would be operative and useful in degree if the parallel transversefen gagement members h, h were formed as dependent members directly upon the under portion of the bed; but, of course, by the provision as appurtenances of the bed, of the bar G, detachably connected to the bed and engagi and the slide bar F havin 7 its en a ement with the bar G, the capabilities o t chine are largely augmented.

I claim 1. In a machine of the character described,

a longitudinally slidable member, appurtenant to. the movable work supporting bed, provided with a transversely extending engagement piece, a rotary cam, a pivoted lever, engaged by and deriving a swinging movement a longitudinally slidable member, appurtenant to the movable work supporting bed,

rom, said cam, a block slidably guided for movement lengthwise of the lever provided with separated parallel transverse engagement pieces, a rotary cam, a pivoted lever, enga ed by and derivin movement from, said cam, a b ock slidabl guided for movement on, and lengthwise o the lever, and having an engagement between said engagement pieces, and means for variably positioning said block along the length of the lever.

3. In a machine of the character described, a longitudinally slidable member, provided with a transversely extending engagement piece, a rotary cam, a pivoted lever, engaged by and deriving a swinging movement from, said cam, and having a slide rib extending along the length ofthe lever, a block slidably guided for movement lengthwise along said rib and having a projection in engagement with said engagement piece, and means for variably positioning said block along.

the length of the lever.

4. In a machine of the character described, a longitudinally slidable member, appurtenant to the movable work supporting bed,

provided with a transversely extending engagement piece, a rotary cam, a pivoted lever, engaged by and deriving a swinging movement rom, said cam, a block slidably guided for movement lengthwise on the lever and having an engagement with said.

engagement piece, for endwise moving the longitudinally slidable member, and a screw having an engagement with said block for positioning t 5. In a metal working machine, a bed and a support having longitudinal ways on her and means for detachab y connecting it as one to the bed, a bar, slidably supported,

a swinging e latter variably along the ,l ngth of the lever. Y

said detachably .connected I which said bed is slidably supported, a memmember, ad ustable means for impartingendwise movement, in variable predetermined extents to the bar, and independent means by which the bed may be freely ndwise moved on the disconnection from the latter of said detachable member.

6. In a metal working machine, a support having slideways for a bed, and a bed .5 slidable'thereon having a longitudinal way and a member fitted to said longitudinal way of the bed, and means for connecting it as one to the bed, a bar; slidably supported beneath the bed, and engagin said detachably connected member, adjustable means for imparting endwise movements, in variable predetermined extents to the bar, and independent means by whichthe bed may be freely endwise moved on the disconnection from the latter of said detachable member.

7. In a metal working machine, a support having a slideway for a bed and a bedslidable thereon, having a longitudinal way and provided with a rack, a member slidably 2o fitted to the way of said bed and means for detachably connecting it as one to the bed, a bar, slidabl' supported, beneath, and engaging said 'etachably connected" member, ad uStable means for imparting endwise movements, in variable predetermined extents to thebar, a gear wheel in mesh with the rack provided on the bed, and means for rotating said gear wheel.

' 8. In a metal working machine, a support having a slideway for a movable bed and a bed slidable thereon provided with a rack, and having a longitudinal way a member fitted to sald'way, a block sidewise engaging said member for a clamping bind thereof. by

v 3 itsside against a side of the way in which such member is fitted, a shaft rotatably mounted in the bed, having a screw engagement with said block to operate it for 1ts clamping and unclamping action, a bar, slid- 4 ably supported, and engaging said clamped member, adjustable means for imparting endwise movements, in variable predetermined extents to the bar, a gear wheel in mesh with said rack and means for rotating 4 the gear wheel.

9. In a machine of the character described, a longitudinally slidable member, appurtenant to the movable work supporting bed, provided with a transversely extending engagement piece, a rotary cam, a pivoted lever, enga ed by and der1v1n a swinging movement rom, said cam, ab ock slidably guided for movement lengthwise on the lever and having an engagement with said engage- 5 ment piece, for endwise moving the lon 'tudina'lly slidable member, a screw-shaftaving anfengagement with said block for 90-.

sitioning the latter variabl alongi the length of the lever, anothersh'a endwise related and universal-joint-conneeted to said screw" shaft, and means for rotating the latter shaft. 10. In a machine of the character described, a longitudinally slidable member,

provided with separated parallel transverse ingsaid block, a shaft section endwise related, and universal-joint-connected to, the

screw shaft, provided with a small gear wheel, another shaft parallel with said shaft section having a larger gear wheel thereon,

and means for rotating the latter shaft. 11. In a machine of the character described, a longitudinally slidable member,

provided with separated parallel transverse engagement pieces, a rotary 'cam,a pivoted lever, engaged by and deriving a swinging movement from, said cam, a block slidably guided for movement on, and lengthwise of, the j lever, and having an engagement between'said engagement pieces, a screw'shaft engaging said block, a shaft section endwise related, and universal -joint-connected to,

the screw shaft, provided with a small gear wheel, a supportlng bearing for said shaft section in which the latter is axially mov- ElfiGpflDOtl'lBI' shaft parallel with said shaftsection having a lar er gear wheel thereon, and means for rotating the latter shaft.

,12. In a machine of the character described, a longitudinally slidable member,

appurtenant to the movable work supportin' bed, a rotary cam, apivoted lever, engage byand deriving a swinging movement from, said cam, a block slidably guided for movement on the lever, for varying its distance from'the. lever fulcrum and coac'ting with said slidable member for longitudinally moving the latter and means for variably ositioning said block along the length 0 the lever.

13. In a metal working machine, a bed having 'a' depending lug anda supportingframe having longitudinal slideways for the bed, a bar. longitudinally ranged, and slidably supported, beneath the bed having an upstanding member engaging said depending lug and having a pair of transverse parallel depending members, a pivoted lever, a

rotative cam coactin'g' with said lever for im parting swinging "movements thereto, a block supported by, and slidable along the length of, the lever, having an upstanding1 roller stud engaging between said parallel epending members, a screw shaft engaging through said block, and means for turning said shaft ,7

for positioning said block variab length of the lever.

14; In. a metal working machine, a supportin frame having lon 'tudinal slideways for a bed, and a be lower horizontal section having a depending along the .lug, and a sup rimposed section centrally pivotal'ly eng' ed on the lower bed section and having work carrying means mounted comprising a 15. In a metal working machine, a supportin frame or base having a bed longitudina ly movable thereon and a work carrying support mounted on the bed, means for moving the bed longitudinally on the frame, a support slidably movable transversely on the frame, having a head for atool carrying spindle pivotally mounted'on said support whereby said head may be swung toward and away from the location of the work, said support having a stop for determinatively positioning such swinging head in its relation to the work-and means for transversely moving said support.-

' 16. In a machine of the character de scribed, a lon itudinally slidable member, a rotary cam, a ever engaged by, and deriving a swingin movement from, said cam, a block slida ly guided for movement on the leverfor varyingits distance from the lever fulcrum, and coacting with said slidable member forlongitudinally moving the latter, means for variably positioning said block along the'length of the lever, and mechanism for rotatablydrivingsaid cam, which comprises adjustable speed varying means. I

- 17. In a machine of the character described, a longitudinally slidable member, a cam, a lever engaged by, and deriving a swinging movement from, said cam, a block, 45- for varying its distance from the lever ful-- slidably guided for movement on the lever crum, and coacting with said slidable member -for longitudinally movingvthe latter,

-means for variably positioning said block alon the len th of the lever, a rotative shaft on winch sai cam is mounted, a shaft gear connected to the cam shaft having a disk thereon, a wheel edgewise frictionally running on the face ,ofthe disk, adjustably mounted to be positioned variably relatively to the disk 1 center, and means for rotating said wheel."

18; In a-- machine of the character de-.

scribed, a slidable member appurtenant to the work carrying part of the machine, a 'cam, adjustable devices between the cam and said member for imparting variable extents of movement to said member, a disk having a drivin connection with said cam, a wheel edgewise frictionally runnin on the face of the disk, a shaft on which saidlwheel is axially adjustably movable but relatively to which the wheel is non-rotatably engaged, means for rotating said shaft, and means for adjusting the friction wheel, along the length of its shaft, toward and away from the center ofsaid disk.

19, In a machine of the character described, a longitudinally slidable member, a cam, a lever engaged by, and deriving a swinging movement from, said cam, a block slidably guidedfor movement on the lever for varying its distance from. the lever fulcrum, and coacting with said slidable member for. longitudinally movingcathe latter, means for variably positioning said block along the length of the lover, a rotative shaft on which said cam is mounted, a shaft,v

gear-connected to the cam shaft having a disk thereon, a wheel edge-wise frictionally running on the face of the disk, a shaft, on

which said wheel is spline engaged, and 7 means for rotating such shaft, a slidable bar carrying a yoke whiclrembraces the wheel, and means for'manually sliding said bar.

20. In a machine of the character described, a longitudinally slidable member, a cam, a lever engaged by, and deriving a swinging movement from, said cam, a block slidably guided for movement on the lever for varying its distance from the lever fulcrum, r

and coacting with said slidable member for longitudinally moving the latter, means for variably positioning said block along the length of the lever, a rotative shaft on which said cam is mounted, a shaft gear connected to the cam shaft having a d sk thereon, a wheel edgewise frictionally running on the face of the disk, a shaft,'on which said wheel is spline engaged, and means for rotating 7 such shaft, a slidably mounted rack bar carrying a yoke which embraces said wheel and a shafthavin a. hand wheel and a gear wheel in mesh wlth the teeth of said rack bar. 4

fSigned by me at Springfield, Mass, in presence of two subscribin witnesses.

' CHARLES E. V N NORMAN; Witnesses: i

WM. S. BELLOWS, G. R, DRISCOLL. v

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