US1920073A - Grinding machine and the like - Google Patents

Description

July 25, 1933. G. GORTON ,920,07

GRINDING MACHINE AND THE LIKE Filed July 10, 1930 4 Sheets-Sheet J July 25, 1933. cs. GORTON GRINDING MACHINE AND THE LIKE Filed July 10, 1930 4 hee s-Sheet 2 July 25, 1933. I G GQRTQN 1,920,073

GRINDING MACHINE AND THE LIKE Filed July 10, 1930 4 Sheets-Sheet s y 1933- e. GORTON GRINDING MACHINE AND THE LIKE Filed July 10, 1930 4 Sheets-Sheet 4 mYi/L 6W v jectsand nature of theinvention will be unportingpedestal for the rotary shaping or cal expression or embodiment of my inv'ening beyond the vertical side faces of the a tion, with the end in view of adapting the the medium of a belt or OthQFlPOWG]: trans- 7 individual for comfort, convenience and the is provided for the grinder, and the mount- 7 Patented July 25, 1933 i r r 1,920,073

UNETED STATES PATENT rrioe GRINDING MACHINE AND 'I'I-IE LIKE Application filed July 10, 1930. Serial No. 467,092..

I This invention relates to grinding mastanding from the base. This housing, chines and the like, and from a specific preferably at one end, provides a vertical standpoint particularly concerns grinders extension 2a, forming a part ofthe housing, for rotary and other cutters; and the obandlconstituting a rigid upstanding supderstood by those skilled in theart in the grinding wheel ordisk 3, and its mounting. light of thefollowing explanationsof the This grinder 3, iscarried and driven by. a accompanying drawings that illustratewhat shaft 4, extending through the upper end I now believe to be the preferred mecha'niof pedestal 2a, with the shaft ends projecttion from among other forms, constructions pedestal. The grinder 8, isifixed to one and developments thereofwithin the spirit overhanging end of said shaft to present the and scope of the invention. peripheral as well as the vertical fiat outer 7 An object of the invention is to provide shaping or grinding surfaces to operate 011 15 certain improvements in the manual cona rotary cutter or other tool asjhereinafter v trols forthe cutter or tool, by which the explained. The opposite projecting end of cutter or tool being operated on by the the shaft can be equipped with pulley 4a, grinding element is fed, moved and manipuby which the shaft and its grinder can be lated during the shaping or grinding operadriven from any suitable motor through machine to both right and left hand operamission. However, the'griii d'er can be drivtors and to enable each operator to assume on and supported in any'suitable Vmanner a position, when actuating and manipulating and by any suitable means.

such controls, best suited to the particular In the embodiment illustrated, a guard 5,

highest efficiency. ing for shaft 4 extends through and is car- A further object of the invention is to ried by the pedestal and provides the shaft provide certain improvements in, construcbearings. I tions, combinations and arrangements for The rotary cutter or other tool to be the production of an improved and highly shaped or ground by the outer vertical face desirable grinder. I i v ofthe rotary shaper or grinder 3, is held it-h the foregoing and other objects in with its workin end in operative relation view, my invention consists in certain novel to the vertical face of the rotary grinder. structural features and new combinations A collet or chuck 6, is provided to removand arrangements,- more fully and particuably receive and clamp the rotary cutter or larly described and specified hereinafter. other tool to be shaped or ground by opera- Referring to the accompanying drawings, tive contact with the driven rotary shaper forming a part hereof or grinder 8, and this collet is so mounted,

Fig. 1 is a perspective view of a grinder supported and controlled as to be capable as an example of an embodiment of my in of bringing the working end of the cutter, vention. or the'portion thereof to be shaped, into op- Fig, 2 is a longitudinal vertical section, erative engagement with the grinder and to showing a portion of the grinder in side move and shift the same as required to proelevation, duce the cutter shape desired. In the ex- 45 Fig. 3 is a cross section taken in the plane ample shown, the collet 6, 1s carried by a of the line 8-8, Fig. 2. holder that embodies a flat or disk-like base Fig. 4: shows the grinder in end elevation; 7, rigid with an upstanding arm 8 that is In, the embodiment illustrated, I provide rigid with and carries a top head 9, through a base 1, for a rigid strong vertical casing which the collet 6, extends and in which it or housing 2, preferably rigid with and upis rotatable by manipulation of the finger loo cessible on the rear end of the oollet, i. e. on in the collet end remote from the grinder. The

or hand wheel or disk 6a, exposed and accollet disclosed is of a common type, but I l the grinder.

carrying the head, carrier, or sleeve 10, and

sleeve surrounds and is rotatable on a supdo not wish to limit my invention. to any particular chuck or colletfor removably receiving and clamping the work such as the cutter to be shaped; The head 9, 1S arranged in front of the operating ertical face of grinder 3, and is spaced therefrom,

and the longitudinal axis of the elongated collet 6, 1s parallel w th or arranged at any suitable angle with respect to the axis of rotation of the grinder 3,'and the ,collet formed to longitudinally receive the cutter to be shaped through its end-facingthe grinder with the cutter cludes the upstanding bracket 8, 9, rigid withbase 7 and a vertical sleeve or hollow head 10, having top sleatlOa, on. which the base 7, isjfitted and to' which it is normally rigidly clamped by vertical clamping bol: 111 When the bolt 1l,iisloosened, as byjrotation through the' mediuin of handlella, the bracket 7, r8, '9, can befrotated 011' seat 10a, around ertical bolt 11, as a center, to set the collet and'the rotary v cutterheld therein at any desiredangle with res i'ect to the workingface 'of grinder Sfand thereupon the bolt can beitightened to lock the bracket 7, 8, 9, rigidly to the sleeve 10, 8X- tending upwardly approximately radially 10, aaralle iwith andla distance below the axis of rotation of grinder 3, and said port projecting from the housing and constituting said longitudinal axis of. the

sleeve 10, and on which the sameis rotatable, when desired, to" swing or oscillate the bracket 7, 8, 9, in vertical plane back and forth in front of the grinderto carry the working end of the tool back and forth across In the example shown, the sleeve 10- is formed or provided with a depending weight 10?), to approximately counter weight or compensate ifor the weight of the upstandii'lg bracket 7, 8, 9,

In thiseinbodiment, the slideor support on which the same is centered and rotatable,

constitutes a part of the feed slide or mecha nisin whereby the collet and the work carried thereby are fed toward and from the working-face of the grinder. This support is in the form of a'strong horizontal longitudinally elongated slidetube 12, parallel with shaft' l, and located a distance below the same. The sleeve 10, rotatably surrounds slide 12,. preferably on interposed rolling bearing 100, if so desiredh i This supporting'slide'tube 12, extends inprojecting therefrom vtoward the grinder.

and the load carried thereby to the housing 2, through a bore or opening 20, inthe front vertical wall of the housing and is longitudinally slidable'therethrough on its feeding movements. The tube 12, with its load, is carried by and longitudinally slidable on the fixed horizontalguiding and supporting spindle 14;, extending longitudinally through the housing and into the tube 12, preferably, at least into the porti'on'of the tube su'rroun iied by sleeve 10. The outer, end of this spindle 14, extends through a bore 15, in herear (or left hand Fig. 2) wall of the housing and is rigidly wedged and clamped therein by exterior nut 16. he fixed supporting spindle 14, is formed with a central longitudinal bore extending tl'n'oughout the length thereof, and the rotaryfeed shaft 17, is mounted to rota tein said bore and'extends throughout the length of said spindle'and beyond the ends thereof, and one end of said feed shaft (the righthand end 2) ias fixed thereto an accessible exposed handle 18, for rotating thesha-ft, and. the other end of said shaft (the left hand end Fig. 2) has fixed thereto the exposed accessible handle 19, for rotating the shaft.v The rotary feed shaft '17 is formed with the longitudinally threaded shaftnl'l', extends beyond the end of the slide tube 12, and extends through and has bearing in and is held against substantial relative longitudinal movement in', an end head 21, rigid with. split sleeve clamp 2la, surrounding the end of tube 12, and normally clamped fixedly thereon, and preferably aiding in holding the sleeve 10, against relative longitudinal movement on tube 12.

Rotation of feed shaft-17, in one direction, by the right hand applied to handle 18, or by the left hand applied to handle 19, will cause the sleeve 12, to slide longitudinally onjspindle 1 1, to carry the work, such as a cutter, [say toward the grinder, while rotation of said'shaft in the opposite direction will feed the cutter away from the griruleru Means'are provided for locking the rotary sleeve 10, against rotary movement on the tube 12 and in any desired angular position on said tube. For instance, I show the split sleeve clamp 21/1,, normally fixed on the end of the tube 12, projecting Y beyond rotary sleeve 10, formed with a rigid exterior radial arm 21d, formed with a radiscrewedyfto"release the sleeve for; rotary inovementon said tube. V

The cylindrical tube 12, is mounted for rotaryor turning movement on the cylindrical' spindle 14, and the end' ofsaid tube, within housing 2, is provided with a depending radial arm 25, normally fixed to or rigid with the tube. For instance, the arm 25. can be carried as a fixed part of a ring clamp 25a,surrounding and tightly clamped on the tube end. A stiff vertical plate 250, is fixed to and depends from arm' 25, and this plate is so arranged with respect tothe tube axis that pressure on one flat face thereof will rotate the tube in. one direction and.

pressure on the other plate facewill rotate the tube in the opposite direction. Hence, I arrange this metal wing or plate 25?), between two alined opposing reciprocatory metal plungers 26,27, having preferably non-metallic, such as hard fibre, contact plugsor noses 28, abutting theopposite side faces of the plate, to alternately apply pressure in oposite directions a-gainstthe plate and thereby rockthe plate back and forth the cutterjis required, and this movement is 3 also advantageous when dressing the working faceof the grinder by a tool'having a diamondpoint, held by the collet.

- As convenient means for actuating and controlling the plungers 26, 27 I provide a 1 guide socket in the base 1, in which plunger 27, is confined to reoiprocate'under the propulsionofexpansmn spring 27a, in one direction', and under push of plunger 26',- in

q the opposite direction by whichthe spring is 1 compressed. The plunger '26, slidable and rotatable in a guideway in base "1, is screw threaded-to mesh with the nut 29, fixed to the base, and is ')rovided with handle 26a,

exposed and accessible at the machine front;

The shaft 26, can be rapidly rotated first in one direction, thenin the opposite direction,

to attain the desired back andforth swing of wing or plate 25?), and consequently of the collet and the work as hereinbefore described.

Grinders of this type, are comparatively small in size so that the operator standing in front thereof can assume a comfortable easy position with either hand on 'either wheel 7 19 or wheel 18, to operate the feed'mechanism to keep the work up tothe working surface ofthe grinder, while the other hand grasps the hand wheel 6a, to rotatethe collet toturn the work, such as a rotary cutter,

' while against the grinder, or to otherwise manipulate the work 'or to oscillatethe collet carrier 10,7, 8, and- 9, on tube 12, as an axis, if the work requires such movement.

The handle wheel26a, is conveniently and centrally located" at'the machine front so that the operator can assume a. comfortable position and'by one hand rotate said handle back and forth to'oscillate thecollet or work holder. back andforth, while with the other hand, the operator can rotate either" handle .wheel 19, or hand wheel -18,to feed the work. The feed tube .will beoscillated by the wing 25b, and opposing plungers while the feed is moving and regardless of the position of the tube, particularly as the wing is elongated to a length approximately equal to the range of feeding movement of tube 12.

. ,Machines of this type that requireclose concentrated attention and the simultaneous use ofboth hands'for operation of controls by manipulating different handles or wheels, quickly tire and cramp'many operators, because of their inability to assume a comfortable position while thus employing both hands, particularly any handle arrangement while convenient. for some operators wlll be very inconvenient for others, and while convenient for a so-called right handed operator will be exceedingly inconvenient for a left handed individual. I have success'sfully-solve'd this particular problem providing the rotary feed screw shaft with exposed operating handles at both ends, both handles easily accessible from the machine front and with thecollet controlling handle also easily accessible'fromthe 'operators position, 'sothat the operator can assume the position most restful to his individuality, while manipulating the collet with either handand the feed with the other hand.

yarious variations,=modifications and departures .of and from my invention are possible without departing from the spirit and scope thereof under the claims when construed as broadly as permitted by the prior art, the disclosure hereof is for pur poses of'explanation and not for purposes of limitation except where required by the prior-art.

' What I claim is r 1. A, cutter grinder embodying "a rotary grinding member;. a collet for reinovably holding the cutter'in operative relation to said member; a carrier forv said collet, said collet provided with a manipulating handle accessible from the operators position; said carrier" including a rotatable sleeve andfa bracket .upstanding from said sleeve; -ap--.

proximatelyradially thereof and rotatably from said grinding member, said feed mech anism' having manual 1 operated actuating mechanism with operating means'accessible 7 from the operators position, said feed me'chtlireaded feed screw extending longitudinal- 1y through and beyond the ends of said spin-v dle and at both ends having accessible handles for rotating said screw by manipulagaged by said grinding member; and means" movements.

tion of either handle;said Spindle having a relatively fixedfeednut receiving said roable and also rotatable on said spindle and provided with a bearing-in'which said feed screw is confined ,and rotatable; manually actuated means for rotatablyioscillating said tube on said spindle; a sleeve mounted to rotate on said tube and carried by said tube on its longitudinal feeding movements; means whereby said sleeve can be locked-to said tube at various angular positions-to r0- tatively oscillate therewith and, whereby said sleeve can be released to rotatively oscillate on said tube; a, bracket rising from and carried by said sleeve and provided with.

a holderfor the work to be operatively enwhereby said bracket can be adjusted and locked on said'sleeve' to present the work at various angles tosaid member;

"3. A grinder for rotary and other cut-' ters, including a support; a-spindlefixedat one endtosa-i'd support and projecting therefrom 'a rfeed-tu'be longitudinally slidable on said spindle and projecting beyond the free end thereof; a? rotary feed screw extending longitudinally through-and mounted to rotate in said-:spindle'and projecting beyond both ends of the spindle and beyond both ends of said tube and. provided. at both ends with handles for; rotating the screw,

both handles being accessible from the operators position; said spindle having a rela tively fixed feed nut for said rotaryscrew; said screw mounted to rotate with respect to said tube and to slide the tube on its feed and return strokes; and a carrier for the cutter to be operated on, said carrier propelled by said 4:. A grinder for rotary and other cutters, including a longitudinally elongated. collet to grip and hold thecutter to be operated on, said collet having'a manipulating handle; an upstanding bracket having ahead carrying said collet and in which-the same is rotatable; a carrier for said bracket; means for clamping said bracket to said car rier and whereby said carrier can headjusted and set to'hold the collet at various angular position; supporting; means ,for

saidslide in various relative of said plungers tube on its feed; and return i its'feeding and return strokes; said slide being rotatably oscillatory and provided of said face; a collet extending through and rotatable in said head and at its outer end provided with amanipulating handle, said collet adapted toreceive and hold the cutter in operative relation to said face'and to rotate the cutter during the shaping op- 'eration; a carrier for said bracket; means 0 1 whereby the bracket is adjustable with retary screw; a feed tube longitudinally slid,-

spect to the carrier to change the angular position of the collet with respect to said face; a support for saidcarrier; said carrier beingrotatively adjustable on said support to move said collet in a vertical plane back and forth in vfront offsaid face; means whereby said carrier can be locked to said support in various angular positions; and

'feed mechanism for moving said support to feed the collet toward and from said face. 6. A grinder including a longitudinally movable feed slide; feed mechanism for moving said slide on its feeding and return movements; means forrotatably oscillating said slide" on itsclongitudinal axis during its feeding movement and while in any position within its feeding range of movement; and axwork carrier supported by said. eX-

' tending approximately radially of said slide and mounted to rotatably oscillate onsaid slide; and means whereby said carrier can be released to rotatably oscillate on said slide and whereby said carrier can be locked to angular positions and to oscillate 'withsaid slide.

Af grinder including a work carrier; a longitudinally movable feed slide therefor; feed mechanism for actuating said slide on its feeding and return strokes; said slide being rotatably oscillatory and provided with a, radial wing; oppositely arranged plungers to bear against and reciprocate said wing to rotativel oscillate said slide, one eing spring pressed and theother manually reciprocated.

8. A grinder including a work carrier; a longitudinallymovable feed slide thereof; feed mechanism for actuating said slide on allel with the axis of rotation of said grinder; a carrier mounted on said slide to oscillate thereon on an axis parallel with said grinder axis; means whereby said carrier can be locked to said slide against relative oscillation; a holder mounted on said-carrier and provided with means for holding a cutter or the like with its working end in operative relation to said grinder, said means being-relatlvely rotatable on an axis approximately alined with the longitudinal axis of the cutter held thereby; means whereby said holder can be adjusted-with respect tosaid carrier to vary the angle of the cutter with respect to the working face of the grinder; and screw feed mechanism for said feed slide for feeding said cutter toward and from said grinder. I

10. In combination; a 'frame; a rotary grinder carried thereby and provided with driving means; a feed slide-carried by'said frameand having a longitudinal path of movement; a carrier mounted on said slide to oscillate thereon on an axis parallel with said grinder axis; means whereby said carrier'can be lockedto said slideagainst relative oscillation; a holder mounted'on said; c'arrierand provided "with means for holdinga cutter or'the likewith its working end in operative relation to said grinder, said means being relatlvely rotatable on anaxis approximately alined with the longitudinal axis of the cutter held thereby; means whereby said holder can be adjusted withrespect to said carrier to vary the angle of the cutter with 'respectto the working face of the grinder; and screw feed mechanism for said feed slide for feeding said cutter toward and from saldgr1nder, sa1d carrier being" provided with means for. approximately counterbalancing the weight of said holder and means carriedthereby;

'11.- In combination; a frame, a rotary grinder carried thereby and provided with driving, means; a feed slide vcarried by said frame and having a longitudinal path of movement radially spaced from and parallel with the axis of rotation of said grinder; a carrier mounted on said slide to oscillate thereon on an axis parallel with said grinder axis; means whereby said carrier can be locked to said slide against relative oscillation; a holder mounted on said carrier and provided with means for holding a cutter or the like with its working end inoperative relation to said grinder, said means being balancing "weight, for the purpose substantially as described. 1

12. In combination; a frame; a rotary grinder carried thereby and provided with driving means; a feed slide carried by said :frame and having a longitudinal path of movement radially spaced from and parallel'withthe axis of rotation of said grinder; a carrier mounted on said slide to oscillate thereon on an axis parallel with said grinder axisymeans whereby saidcarrier can be locked to said slide against relative oscillation; a holder mounted on said carrier and provided with means for holding a cutter or the. like with its working end in operative relation to said grinder, said means being relatively rotatable on an axis approximately alined with the longitudinal axis of .the cutter held thereby; means whereby said holder can be adjusted with respect to said carrier to vary the angle of the'cutterwith respect to the working face of thefigrindei 'and screw feed mechanism for said feed slide forfeeding said cutter toward and from said grinder; said rotate able means provided with a manipulating handle accessible to either hand of the operator; said feed mechanismbeing provided with a left hand handle and with a separate right hand handle either adapted to operate said feed mechanism, said left and right hand handles being so arranged with'respect to each other, said manipulating handle, and

the operators position that the operator while -manipulating said manipulating handle with either hand can'operate'the feed mechanismwith the other hand. i I

'13. In combination; a frame; a rotary grinder'carried thereby; an elongated normally-fixed spindle carried by said frame radially s aced from and approximately parallel with the axis of rotation of said grinder; a feed slide embodying a sleeve on and slidable longitudinally of said spindle, and a carrier mounted on said sleeve to oscillate thereon, means being provided whereby said carrier can be locked to said sleeve against relative oscillation thereon,

said carrier being provided wth a holder mounted thereon and extending radially therefrom with respect to said sleeve, said holder being provided with adjustable means for grasping and holding a cutter or the like in operative relation to said grinder; and, feed mechanism for actuating said slide to feed said cutter toward and from the grinder.

14. In combination; a supporting frame;

a rotary rinder carried by said frame; a normally fixed spindle carried by said frame with its longitudinal axis spaced radially from and approximately parallel with the grinder axis of rotation; a slide sleeve on llO saidx'spindle and slidable longitudinally thereof; mechanism carried by and extending laterally from said-sleeve for holding a: cutter or the like in operative relation to said grinderand embodying means whereby the. cutter can be moved back and forthacross the face of the grinder and means whereby: the cutter can be rotated approximately; about its longitudinal axis;; a rotary feed shaft; and a screw threaded, operative connection between said shaft and said slidev sleeve. r i

15.-In combination; a supporting. frame;

a driven rotary grinderyor cutter shaper.

carried thereby; a normally-fixed longitudinally elongated spindle carried by said frame; a rotary feed shaft mounted in and.

extending longitudinally through said spindle and havinghandles for rotating: the shaft, one at each en'd thereof, and both ac-w 'cessible from the operators stand; a: feed slide carried by and movable, longitudinally, of said spindle and having screw threaded operative connection with vsaid feed shaft,

said slide including means for holding the,

cutter to be sharpened or shaped at various angles with respect to the working face of the grinder and means whereb'y the cutter can be moved back and forth across said face .of the grinder, and, a manipulating handle accessible toeither handof the operator while located at the operators stand with his other hand operating one of said feed shaft handles. I r

16. In cornbinatioma supporting frame;

a'driven rotary grinder or cutter shaping member; a normally-fixed elongated spindle carried by said frame; a feed slide for the cutter or other work the point or end of whichis to be sharpenedorshaped by said grinder, said" slide 1 embodying an elongated tubev slidable longitudinally of and rotatable on said spindle, means for controlling the axial movement of the tube ongthe slide including an s accessible operating handle, said slide also including a holding chuck for the cutter andm'eans whereby said cutter can be moved back and forth acrossjthe working face: of thegrinder; and a screw threaded feedmechanism for feeding said slide longitudinally of said spindle to carry the cutter toand from the working face of the grinder,

17. In'combination; a supporting .frame;

the longitudinal axis of the cutter and having a manipulating handleaccessible to either hand of the; operator from his stand for rotating the cutter held by-the chuck with respect to the working face of the grinder, and feed mechanism for actuatin saidslid toflcarry the cutter toward and from the working face of the grinder, said mechanism. having spaced right and left hand operating handles both-accessible from theoperators stand. 7 v

- GEORGE GoRT'ou,

relatively, rotatable with respect to said slide on an axis approximately parallel'with

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