US1683974A - Grinding apparatus - Google Patents

Description

Sept, 11, 1924s.

L. R. HEIM 'GRINDING APPARATUS Filed Feb. 8. 1921 5 Sheets-Sheel 1 Sept. 1l, 1928. 1,683,974

l L. R. HEIM @BINDING APPARATUS Filed Feb. s. 41921 s sheets-sheet 2 4 3 7 Ill 9 t u m g W W 6, o 1 .m 0 uw i 3 W, M0 S 1 U` 2 M m w n a. H H v R m M vwd m w ma m .m f ,d l L .IW E \\1/. l ,Il 4 VIHf n l N M .WH Tir I u, v/ 5. M w m .n J @d Patented Sept. ll, 192.8.

UNITED STATES,

PATENT oFFiCE.

LEWIS R. HEIM, OF DANBUBY, CONNECTICUT, ASSIGNOR, BY MESNE ASSIGNMENTS, TO

CINCINNATI GRINDERS INCORPORATED, OF CINCINNATI, OHIO, A CORPORATION OF n OHIO.

enmmNG APPARATUS'.

Application led February 8, 1921. Serial No. 443,390.

This invention relates to grinding apparatus and more particularly to grinding apparatus adapted to grind the surfaces of cylindrical articles. One of the objects of the invention is to provide practical apparatus of the above nature capable of a broad field of eicient use. Another object is to provide grinding apparatus of ,compact andY simple construction and efficient and n accurate action. Another object is to provide a simple and effective attachment formed for ready connection with and removal from a grinding machine, and adapted substantially to broaden the field of use of such machine. Other objects will be in part obvious and in part pointed out hereinafter.

The invention accordinglyconsists in the features ofl construction, combinations of elements and arrangement of parts which will be exemplified in the structure hereinafter described and the scope of the application of which will be indicated in the following claims.

In the accompanying drawings in which is shown one of various possible embodiments of this invention,

Y Figure. 1 is a plan of the same;

Figure 2 is a sectional elevation taken along the line 2 2 of Figure 1;

Figure 3 is a sectional elevation taken along the line 3-3 of Figure l;

Figure 4 is a sectional view on an enlarged scale of parts appearing in Figure 3; and

Figure 5 is a sectional elevation taken along the line 5--5 of Figure 4.

Figure 6 is a erspective view on a small scale of the wor carrier.

Similar reference characters refer to similar parts throughout the several views of the drawings.

Referring now to Figure of the drawings, there is indicated a supporting frame or stand 10 of any suitable construction provided with a bed 11 having ways 12 extending longitudinally thereof, Ythat is in a,Y

right-and-left direction with respect to Figure 2. On these ways is mounted a lower carriage 13 capable of movement by any suitable means alongl the ways 12 as is com-` mon in the construction of ordinary ex-y ternal grinders..

Upon the lower carriage 13 which is shown in plan in Figure 1 of the drawings, is mounted a head stock 14 driven as by the pulley 15 with belt 1G and provided with a suitable face plate 17.

The upper surface of this carriage is provided with ways indicated at 18 on Figure 3 of the drawings, and slidably mounted on these ways is a tail stock 19 provided with the ordinary means for adjusting it longitudinally of the machine and clamping it in adjusted position-- Mounted on a rearward extension 20 of the frame of the machine as shown in Figure 3 of the drawings is a'carriagc or slidable support 20a supported on ways 21 on which it may travel in a direction toward and away from the bed 13 and with respect to which it may be locked in position as by means of the bolt 22. This carriage is pro vided with a pair of heavy bearings 23 for a shaft 24 driven by the pulley 2) and belt 26 which is protected by a hood or housing 27. Shaft 24 carries a grinding wheel 28 which is driven at high speed preferably in the direction indicated by the arrows in Figure 1 of the drawings. By suitable adjustment ofthe carriage 20 this grinding wheel may be moved to bring its operative surface at any desired distance kfrom the axis of the head stock and tail stock hereinbefore described. This adjustment furthermore not only provides for altering the point action of the surface of the grinding wheel but compensating for any wear on the latter part.

It w'll thus be seen that if work be mounted upon the centers of the head stock and tail stock hereinbefore described and rotated by a suitable dog, its surface may be ground by bringing forward the rapidly rotating grinding wheel to the desired point and moving the bed or carriage 13 back and forth in a direction lengthwise of the inachine. It may also be noted at this point that this lower carriage or bed 13 comprises upper and lower members 13EL and 13" respectively, which although generally nioving as a unit are nevertheless relatively movable about a vertical axis on the curved ways or guides 29 and 30. This provision is made to permit the upper portion 13* of the carriage to he swung slightly into an Oblique relatinwith the length of the lower p0rtion 13b and clam ed in such position. With this adjustment t e axis of the parts mounted onthe centers of the head stock and tail stock will be correspondingly inclined with respect to the axis of the shaft 24, and upon a longitudinal movement of the carriage 13 with respect to the grinding wheel, a surface of ,tapering form will be ground.` Obviousl this angular adjustment may be employe to correct any deviation from parallelism of the above axes when it is desired to grind a truly cylindrical surface.

Mounted u on the ways 18 as shown in Figures 3 and) 4 of the drawings, is a device or attachment in which certain of the more important features of this invention reside. This device comprises a 'recess or support 31 clamped on the bed in any desired manner, as by means of the ca screw 31, and provided at its forward en that is toward the front of the machine, witha sleeve or bearing 32. Rotatably mounted in this bearing is a shaft 33 threaded as at 34 and provided with a hand wheel 35 and collar 36 respectively adapted to turn the shaft and prevent its movement in the bearing 32. This shaft 33 is threaded into a slide or carriage 37 which travels on ways 38 formed on the support 31. As the hand wheel 35 is turned, the slide 37 is accordingly moved transversely of the machine, that is, toward or away from the axis of the centers of the head and tail stocks. The slide 37 is yieldingly held in adjusted position by means of a spring 39 interposed between the'head of a screw 40 and a crossiece 41 which bears against the sides of a s ot 42 in the support 31,. through which slot the screw passes. There is thus exerted a yieldin frictional pressure tending to clamp the sli e 37 to the support 31 and yet permitting manual adjustment of the latter. Formed on the slide, 37 is an abutment or flange 43 provided with a recess 44 in which there is held by the screw 45 a flat plate 46. Also mounted on the abutment 43 .as by means of the bolt 47 is a plate48 parallel to the plate 46. Clamped between these plates is a support or carrier for rolls 49 having at its upper edge an inserted wear piece of hard steel 50. This carrier 49 as shown in Fi ure 6 of the drawin s, hasv preferably su stantially parallel sides or faces and may be positioned or clamped beltween the plates 46 andA 48 (seeFig. 5) so that its upper surface is downwardly inclined to any desired degree in a direction 28 is thereupon speed and the wheel 55 driven at a rela- 125 Lesson along which cylindrical objects may be fed and this trough may be in effect raised or lowered with. respect to the horizontal lane of the axis of the grinding wheel as ereinabove described and its inclination with For use in conjunction with the device above described, there is mounted on the centers ot' the he'ad and tail stock and driven by a suitable dog, an arbor or mandrel 54 having fixed ythereon a wheel 55 which may preferably be an emery wheel or the like. lThis latter Wheel is rotated as indicated by the arrow in Figure l of the drawings, in what is termed the oppositedirection with respect to the direction of rotation of the grinding wheel. In other words. the operative surfaces of these two wheels co-acting with opposite sides of articles s pported on the carrier 49 as hereinafter desc ibed, travel in opposite directions; that is, the grinding wheel surface will move downwardly toward the carrier whereas the opposin surface of the wheel 55 will move upwarly or away from the carrier.

Considering now the action of this apparatus, it may first be noted that it may be employed as hereinbefore described to grind cylindrical or tapering. surfaces of articles mounted directly on the centers of the head and tail stocks in place of the arbor 54.

When this is done, the fixture or attachment 31 is removed and the rinding wheel moved forwardly to co-act wlth the surface of the article thus mounted. Suitable angular adjustment having been made between the up,-

per and lower portions of the carriage 13 110 the latter is moved back and forth longitudinally of the machine and a c lindrical or tapering surface is ground. hen however 1t is daesired to grind a lar e number of' articles such as the rolls 56, t e fixture 31 115 and trough 62 are mounted in position and the arbor 54 with itslwheel 55 mounted upon the centers. The various arts are thereuplon .adjusted to fit the diameter of rolls w ich it is desired to grind and su port them in a position between the oppose surfaces of the wheels 28 and 55 contactin therewith on the o posite sides. The whee (fiuven at a high rate of tively very low.rate of speed. Rollers are then fed continuously to the trough 52 and slide by gravity into the grip of these opposed wheels. The grinding wheel 28 simply 'grinds at a Vhigh rate of speed all sur- 130 that allmatter herein set forth or shown in it contactstlius causing it to rotate in the direction indicated by the'arrow in Figure 2 of the drawings, and due rto the small diameter of the roll, this rotation is substantially rapid. Furthermore the roll having an inclined relation with vrespect to the axis 'of the wheel 55 as shown in the drawings,

the latter wheel tends to feed the roller longitudinally of the machine in a direction toward the left', having reference to Figure 2 of the drawings. Also, the rate of feed may be varied by adjusting the inclination of the carrier with the horizontal, whereby the relative inclination of the path of travel of the rolls with respect to the path'of the surface of the regulating wheel 55 may be adjusted at will as hereinbefore described. Thus as each successive roll is brought within the grip of the wheels, it is rapidly rotated and accurately ground and automatically passes out between the left-hand pair of plates 46 and 48 from which it is carried away by any suitable trough, diagrammatically indicated at 57. This operation may be carried on at a high rate of speed and it is to be understood that rolls or other cylindrical devices of various lengths and diameters may not only be rapidly but accurately ground. Furthermore, as hereinbefore noted, the machine is readily adaptable to grindin0r larger parts more slowly or in tapering orm by the mountin0r of such parts directly on the centers in place of the arbor 54.

It will thus be seen that there is provided apparatus in which the several objects of this invention are achieved.

As' various possible embodiment-s might be made of the above invention and as vari-- ous changes might be made in the embodiment above set forth, it is to be understood the accompanying drawings is to be interpreted as illustrative and not in a limiting sense.

I claim: l

1. In apparatus of the general nature of that herein described, in combination, a grinding wheel adapted to be rotated at a relatively high speed, means for rotatably supporting and driving said grinding whee means adapted normally to detachably sup'- port a cylindrical work piece for rotation about a predetermined axis and to rotate said work piece relatively slowly while said grinding wheel performs a grinding operation thereon, a regulating wheel detachably supported in said -work supporting and rotating means and rotated by the latter relatively slowlyan'd in a direction to present an operative surface adjacent that of thevgrind'- ing wheel traveling in a direction opposite from. the direction of travel of the operative surface of said grinding wheel, thereby to form with said inding wheel a grinding throat for receiving work of round section, and means for supporting work of round section in the grinding throat formed by and between said adjacent oppositely-moving surfaces of said two wheels, whereby said regulating wheel controls the rotation of said work of round section in said grinding throat while the grinding wheel performs a grinding operation thereon.

2. In apparatus of the general nature of that herein described, in combination, a grinding wheel, a regulating wheel, said wheels being adapted vto present adjacent operative surfaces traveling in .opposite directions, a carrier extending between Said wheels for supporting round bodies in operative relation to the operative surfaces of said wheels, means for adjusting said carrier toward or away from the operative surface `of one of said wheels, and continuously acting means for `yieldingly holding said carrier in adjusted position.

8. In apparatus of the general nature of that herein described, in combination, a ,grinding wheel, a regulating wheel, said wheels bein adapted to present adjacent operative sur aces traveling in opposite directions, a carrier for supportin round bodies between the operative sur aces of said wheels, a carria e for mounting said carrier between said weels and adapted to be, ad-

justed toward or away from the @erative surface of one of said wheels, and continu ously acting means for frictionally holding saidcarriage in adjusted position.

4. In apparatus of thc general-nature of that herein described, in combination, a grinding wheel, a regulating wheel, saiid wheels being adapted to present adjacent operative surfacesftravelng in opposite directions, a carriage mounted substantially between said wheels and adapted to be adjusted toward or away from' the operative surface of one of said wheels, continuously acting means for yieldingly holding said carriage in adjusted position', a carrier for supporting round bodies between the operative surfaces of said wheels mounted upon said carriage, and means for adjusting the relative inclination between said carrier and the path of the opera-tive surface of said regulating wheel.

5. In apparatus of the general nature of that herein described, the combination, with an external grinder comprising a supporting frame, a grinding wheel rotatably mounted at the rear of said frame, and centers adapted normally to rotatably support work in operative relation to said rinding Wheel, of means attachable to said rame and prolthat herein described, in combination, a

e5 and a carrier extending between said wheel'si grinding wluel adapted to be rotated at a relatively high speed,-.means for rotatably supporting and driving said grinding wheel, means adapted normally to detachably snpport a cylindrical work piece for rotation about a predetermined axis and to rotate said work piece relatively slowly while said grinding wheel performs a grinding operation thereon, a regulating Wheel detachably supported in said work supporting and rotatirig means and rotated by the latter relatively slowly and in a direction to present an 4operative surface adjacent that of the grinding wheel traveling in a direction opposite from the direction of travel of the operative surface of said grinding wheel, thereby to form with said grinding wheel a grinding throat for receiving work of round section, a carrier extending between said -wheels for supporting Work of round section in operative relation to the grinding throat formed by and between the oppositely-movingoperative surfaces of said two wheels, whereby said regulating wheel rotates the work in said grinding throat while the grinding wheel erforms a grinding operation thereon, an the path of travel ofthe work axially along said work carrier being inclined with respect to the path of travel ofthe operative surface ofsaid re llating wheel, whereby the latter acts to fee the work along said grinding throat and past-said grinding wheel.

7. In apparatus of the general nature of that herein described, in combination, a mainframe, a Vrinding wheel, means for driving said grinding whcel'at relatively high speed, a head stock and a tail stock mounted on said frame and providing a live c`enter`and a dead center adapted normally to detachably support a round work piece and to rotate the latter relatively slowly about a predetermined ,axis, thereby to permita grinding operation to be .performed thereonby said grinding wheel, a regulating wheel detachably supported b said cent-ers and driven from said head stoc relatively slowly and iig` a; direction'so1` that the adjacent operative surfaces' of said two wheels move in .opposite directions and form ainding throat for receivingl Work ofgroun section, the driving connection between said regulating wheel and said live vcenter being detachable and including a dog,

for supporting `work of round section in operative relation thereto, whereby said regulating wheel controls the rotation of kthe work in said grinding throat, while the grinding wheel performs a grinding operation thereon.

8. In apparatus of the general nature of that herein described, in combination, a carrier for supporting round bodies, a grinding wheel rotatably mounted in operative relation to said carrier and on 'one side thereof for grinding said bodies, a regulating abrasive wheel rotatably! mounted on the other side of said carrier for rotating said round bodies during .the operation thereon by said grinding wheel, said`wheels being adapted to present operative surfaces traveling 1n opposite directions, and means for adjusting said regulating Wheel in a direction lengthwise of said cylindrical body relative'to the operative surface of said^` grinding wheel.v l

9. In apparatus ofthe general nature of that herein described, in combination, a carrier` for supporting work of round section, a grinding wheel rotatably mounted in operative relation to said carrier and on one side thereof for grinding said work, a peripheral regulating abrasive Wheel rotatably ,mounted on the other side of 'said carrier for rotating said work of round section durino the peration thereon by said grinding Wheel, ,said wheels being adapted to present operative surfaces traveling in opposite directions, means for adjusting said regulating Wheel in an axial direction relative to the operative surface of said grinding Wlieel, and means for adjusting the operative surface of said grinding wheel toward or awa from the operative surface of said regulating wheel. I

10. In apparatus ofthe general nature of that herein described, in combination, a inain frame, "a grinding wheel, means for driving said grinding wheel at relatively high speed, means on said frame adapted normally to detachably support a round Work piece and to rotate the latter relatively i slowly about a, predetermined axis while the grin ing wheel performs a grinding operation thereon, a regulating wheel detachably supported by said last-mentioned means and l rotated relatively slowly thereby and in a direction such that the adjacent operative surfaces nof said two wheels travel in opposite directions, a carrier extending between said wheels for supporting work of round wheel and to cause said two wheels to form a grindin throat for receiving work of round section.

11. In apparatus'of the general nature of that herein described, the combination with an external grinder comprising a supporting frame, a peripheral grinding wheel rotatably mounted at the rear of said frame, and centering and driving means adapted normally to detachably support and rotate relatively slowly a cylindrical work piece for rinding operation thereon by said grin ing wheel, of means attachable to said rame and providing a carrier for supporting round bodies adjacent to the peripheral operative surface of said grindin wheel, and a regulating abrasive wheel a apted to be rotatably and detachably supported on said centering andr driving means and in juxtaposition to said grinding wheel and adapted to be driven by said centering and driving means at a relatively slow speed and in a direction so that the adjacent operative surfaces( of said two wheels travel in opposite directions, whereby said regulating wheel rotates said round bodies in said grinding throat while the grinding wheel performs a grinding operation thereon.

12. In apparatus of the general nature of that herein described, the combination with an. external grinder comprising a supporting frame, a peripheral grindng wheel rotatably mounted at the rear of said frameand a head stock and a tail stock each providing a supporting center for normally detachably supporting and rotating a round work piece relatively slowly and about av predetermined axis for action thereon by the peripheral operative surface of said grinding wheel, of-

means adapted to be secured to said frame and providing a carrier for rotatably supporting round bodies adjacent to said grinding wheel, and a regulating wheel adapted to be mounted on and driven at a relatively low speed from said centers on said head stock and tail stock and having its operative face juxtaposed to that of the grinding wheel. thereby to form a grinding throat for said bodies on said carrier, said regulating wheel being driven in a direction so that the adjacent operative surfaces of said two wheels move in opposite directions and acting to control the rotation of the body in said grinding throat.

13. In apparatus of the general n ature of that herein described, the combination with an external grinder comprising a. supporting frame, a peripheral grinding wheel rotatably mounted at the rear of said frame, and a head stock adapted normall to have detachably connected thereto an to rotate relatively slowly a round work piece in operative relation to said grinding wheel and while the latter performs 'nding upon the work piece, of a carrier a apted to support workpof round section adjacent to the peripheral operative surface oisaid grinding wheel and detachably mounted upon the frame, and a regulating wheel detachably mounted in connection with Said head stock in juxtaposition-to said grinding wheel to form a grinding` throat with said. inding wheel for receiving therein work o round section on said; carrier, and driven from said head stock at arelatively low speed and in a direction to present an operative surface traveling opposite from` the direction of travel of the operative surface of said grinding wheel, whereby said regulating wheel controls the rotation of said work in said grinding throat during grinding action thereon by said grinding wheel.

14. In apparatus of the general nature of that herein described, the combination with an external grinder comprising a sup rting frame, a peripheral grinding wheelxiotatably mounted at the rear of said frame, and a head stock and a tail stock, said head stock being adapted normally to have detachably connected thereto and to rotate relativel slowly a round work piece and said tail stool; being provided witha supporting center for said round work iece, whereby the latter is rotated relativeljy slowly about a predetermined axis during grinding action thereon by said grinding, wheel, of means adapted to be secured to said frame and providing a carrier for rotatably supporting cylindrical bodies ad'acent to the peripheral operative surface o said grinding wheel, a regulating wheel detachablyl mounted in connection with' said head stock in juxtaposition to said grinding wheel to form therewith a grinding throatfor receiving said bodies on said carrier and driven relatively slowly from said head stock and in part supported upon said tail stock center, thereby to control the rotation of said cylindrical bodies in said grinding throat and duringoperation thereon by said grinding wheel.

15. In apparatus of the general nature of that herein described, in combination, a main support adapted to be detachably secured to the ways of a machine, a carriage mounted on said support, means for adjustably moving said carriage on said support and in a direction transverse to the direction of said ways, a work carrier extending in the general direction of said ways for supporting round objects, and means for mounting said carrier on said carriage adapted to permit vertical adjustment thereof with respect to said ways. Y

16. In ap aratus of the general nature of that herein described, in combination, a main support adapted to be detachably secured to the ways of a machine, a carriage mounted on said support, means for adjustably moving said carriage on said support and in a direction transverse to the direction of said Ways, a work carrier extending in the general direction of said ways for supporting round objects, and meanscfor mounting sald carrier on said carriage adapted to permit adjustment of the inclination of said carrier with,k the horizontal.

17. In apparatus of the general nature of that herein described, in, combination, a main support adapted to be detachably secured to the ways of a machine, a carriage mounted on said support, means iforadjustably moving said carriage on said support and in a direction transverse to the direction of said ways, a work carrier extending in the general direction of said ways for supporting round objects, and adjustable means or mounting work carriers of different Widths on said earria e.

18. In apparatus o the general nature of that herein described, lin combination, a main frame provided with ways extending` longitudinally thereof, a tail stock and a driving headv stock provided with centers'mounted on said ways, an auxiliary Iframe providedwith ways extending transversely of said first-mentioned ways, a grinding wheel rotatably mounted on said transverse ways and adjustable thereon toward or away from said first-mentioned ways, a regulating wheel detachably mounted in operative relation to said grinding wheel on said centers and adapted to be driven from said head stock, said wheels being adapted to present operative surfaces traveling in opposite directions, and a work carrier extendin Vbetween the operative surfaces of said w eels and detachably ymounted on said longitudinally extending ways.

1-9. In apparatus of the general nature of .that herein described, in combination a main frame rovided with ways extending longitudinally thereof, a tail stock and a driving head stock provided with centers mounted on said ways, an auxiliary frame provided with ways extending transversely of said first-mentioned ways, a grinding wheel rotatably mounted on said transverse ways and adjustable thereon toward or away from said first-mentioned ways, said centers being adapted normally to rotatably support cylindrical work to be positively rotated rom said head stock and to be operated upon by said grinding wheel, a earner forA support- Qing round work ynotadapted to be mounted on said centers of said head and tail vstocks and for carrying said work' in operative relation tov said grinding wheel, means for mounting said carrier on said frame in operative relation to said grinding wheel, and a regulating wheel adapted to be mounted on said centers and driven from said head stock to rotate said round Work on said carrier, Said Wheels being adapted to present operative surfaces traveling in opposite directions.

20. In apparatus of the general nature of that herein described, in combination, a main frame provided with ways extending longitudinally thereof, a tail stock and a driving head stock provided with centers mounted on said ways, an auxiliary frame provided with ways extending transversely of said first-mentioned ways, a grinding wheel rotatably mounted on said transverse ways and adjustable thereon toward or away from said first-mentioned ways, a regulating wheel mounted in operative relation to said grinding wheel on said centers and adapted to be driven from said head stock, said wheels being adapted to present operative surfaces traveling in op osite directions, a work carrier extending etween the operative surfaces of said wheels and adjustable` toward or away from one of said wheels, and means 'for detachably securing said adjustable work carrier to said frame.

21. In apparatus of the general nature of that herein described, ,in combination, a main frame provided 'with ways extending logitudinall thereof, a tail stock and a driving hea stock provided with centers mounted on said ways, an auxiliary frame provided with ways extending transversely of said first-mentioned ways, a grinding wheel rotatabl mounted on said transverse ways and a 'ustable thereon .toward or awayfrom sai first-mentioned ways, a regulatln wheel detachably mounted in operative re ation to said grinding wheel o said centers and ada ted to be driven from rsaid head stock, sai wheels being adapted to present operative surfaces traveling in opposite directions; a supportdetachably se' cured to said longitudinal ways, a carriage extending substantially between said two wheelsmounted on sald support and niovable fthereon toward or awa from one f said wheels, and a work carrier mounted on said carriage for supporting work of round sectionV in operative relation to said wheels.

In testimony whereof, I have signed m name to this specification this twenty-tourt day of January, 1921.

` LEWIS R. HEIM.

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