US2450135A - Work support arrangement for grinding and dressing machines - Google Patents

Description

ZAQEE 5 Sheets-Sheet 31 INVENTOR E/V/A l/flGL-A E. F. HAGER WORK SUPPORT ARRANGEMENT FOR GRLNDING AND DRESSING MACHINES Filed Nov. 14, 1945 HTTQRNE'Y Sept. 28, 1948. E. F. HAGER 0,

WORK SUPPORT ARRANGEMENT FOR GRINDING AND DRESSING MACHINES 5 Sheets-Sheet 2 Filed NOV. 14, 1945 .INVENTOR. f/W/L E M4656 ATTURNE F. HAGER 9 9 WORK SUPPORT ARRANGEMENT FOR GRINDING AND DRESSING MACHINES 5 Sheets-Sheet 3 Filed Nov. 14, 1945 9? v 4 INVENTOR.

Sept. 2, 1948.,

. HAGER 9 9 WORKSUPPORT ARRANGEMENT FOR GRINDING AND DRESSING MACHINES Filed Nov. 14, 1945 5 Sheets-Sheet 4 i I" o A. 166 141 78 N v INVENTOR. V fM/L /-1 #465? Sept, 28, 1948. E. F. HAGER 2,450,135

- WORK SUPPORT ARRANGEMENT FOR GRINDING AND DRESSING MACHINES Filed Nov. 14, 1945 5 Sheets-Sheet 5 HO J56 156a INVENTOR.

EM/L E #1465? .4 TTOENE Y Patented Sept. 28. 1948 WORK SUPPORT ARRANGEMENT FOR GRINDING AND DRESSING MACHINES Emil F. Hager, Queens Village, N. Y. Application November 14;, 1945, Serial No. 628,433

17 Claims.

This invention relates to work grinding and dressing machines and more particularly to support arrangements for holding tools or other work at desired angles for movement relative to the grinding and dressing elements of such machines.

In some grinding and dressing machines such, for example, as disclosed in the U. S. Patent No. 2,144,095, the work support is made adjustable along a guide bar disposed parallel to the spindle and closely adjacent the grinding and dressing element carried by the spindle. In my copending application Serial No. 575,749, filed Feb. 2, 1945, I show an improved grinding and dressing machine wherein a work support guiding bar is disposed a distance away from the grinding and dressing elements outside the zone of flying particles produced by .the grinding and dressing operations.

It is an object of this invention to provide work supporting means for use with either of the two forms of machines referred to above.

Another object of the invention is to provide improved work support means for grinding and dressing machines capable of supporting various forms of tools and other work at various angular positions in operative relation with .the grinding or cutting elements of the machine.

The above and other objects of the invention wil1 become more clearly understood from the following detailed description to be considered in connection with the accompanying drawings in which:

Fig. 1 is a plan view of a work grinding and dressing machine shown provided with a coupling attachment in accordance with my invention;

Fig. 2 is a fragmentary view in front elevation of the grinder machine of Fig. l with one of the work supporting means of this invention supported in the coupling attachment shown in Fig. 1;

Fig. 3 is a sectional view taken substantially along line 33 of Fig. 1, with the main work supporting means removed;

Fig. 4 is a cross sectional view taken substantially along line 4-4 of Fig. 3;

Fig. 5 is a plan view of another form of grinding machine provided with a second embodiment of the work supporting structure of my invention which I refer to as V block;

Fig. 6 is a front elevational view of the work supporting structure of Fig. 5 and Fig. 6A is a similar view of a modification;

Fig. '7 is a side elevational view of the work supporting means of Figs. 5 and 6;

Fig. 8 is a front elevational view of a further embodiment of the work supporting means of my invention which I refer to as the center attachment;

Fig. 9 is a side elevation-a1 view of the center attachment of Fig. 8;

Figs. 10 and 11 are plan and end views, respectively of another supporting structure; and

Fig. 12 is a side view of a bracket that may be used with the structure of 'Figs. 10 and 11.

Referring to Figs. 1, 2, 3 and 4 of the drawings I show a base I upon which is mounted the grinder head 4. The head 11 includes bearings such as indicated at 6, Fig. 3, .to support a spindle i. The spindle 1 supports for rotation, grinding and dressing wheel elements 9 and 9a preferably of the character having working surfaces on the sides thereof. Each wheel element is partially covered with a guard Iii. A liquid circulating system ll directs cooling and cleaning liquid onto the working surfaces l2 of each of the elements 9 and 9a.

The base I includes an upturned marginal flange 13 to provide a catch basin for the liquid and the cuttings during grinding and dressing operations, the liquid and cuttings being removed by drain [4. Mounted outside the basin on arms I5 is a guiding bar 16 for a carriage I! which supports a work supporting post 31. The carriage is adjustable along the bar I6 and may be locked thereto in any desirable position by means of locking screw IS.

The bar I6 is disposed parallel to the spindle l. The frame of the carriage I1 is triangular as viewed in plan, Fig. 1, and two corners thereof are provided with bearing elements 20 and 2! which receive the bar [6 to guide the carriage along a true line parallel to the spindle i. Toward the apex of the carriage is a depending leg 22 provided with a roller 23 which tracks upon a machined surface 24 on the base I.

As shown in Fig. 4 the apex of the carriage i? is provided with spaced shaft supporting elements 2-8 and 29 for rotatab-ly and slideably supporting a member 30 which in turn pivotally supports a post 3|. The post 3| is preferably supported with its longitudinal axis disposed transverse .to the axis of the shaft supporting elements 28, 29. The

-member 30 is provided with a tubular socket 32 for reception of the lower end of the post 3!, the post being locked in position by lock screw 33 Figs. 1 and 2. On the socket 32 is keyed a cali brated dial 34 over which is disposed a pointer 35 keyed to the post 3|. This provides an angular indication of the adjusted position of the post 3!.

The upper end of the post BI is provided with g a work supporting clamp 33 and a lock screw for securing the clamp in the desired angular pcsition about pin which is carried by post 3i.

From the foregoing description it is clear that the post 35 may be adjusted to any desired angular position about its longitudinal axis and the work clamp may be adjustable about an axis transverse to the longitudinal axis of the post Eli. It will now be described how the post is made adjustable along an axis transverse to the longitudinal or in other words, parallel to the axis of the spindle 7. It will also be described how this mounting provides for rocking movement of the post 3i toward and away from the spindle '5 so as to provide movement of the work being shaped relative to the surface E2 of the grinding element 5.

As shown in i a hollow shaft or sleeve is held by screw 2% in supportin element with a pusher pin 46 extending therethrough. The member 38 is secured to the sleeve is by a lock screw ll. A second shaft or sleeve 58 is held in position in the support 29 by a set screw ii-la. Disposed in the sleeve 48 is a retraction spring 48 the outer end of which carries a thrust pin 50. Mounted in opposite ends of the mom ber 39 are two thrust caps 55 and 52 having thrust points engaging pusher rod as and thrust pin 58 respectively. The inner end of the pusher rod it is engaged by a pin 53 held by crank 55 (see Fig. 3) carried by shaft 55. A second crank. arm 55 secured to the shaft so is en aged by a threaded member 58 engaged by a threaded nut i and a packing unit 57a. This screw member 58 is preferably providedwith a collar 58o hav ing calibrations by which the extent of adjustments can be readily determined. The calibrated collar is held on with a ball and spring, the ball riding in an annular groove on the inner surface of the collar so that the collar is ad justable on member An adjustable calibrated pin 58b is disposed adjacent collar 5805 for determining the degree of axial movement of member 3%] as screw is turned.

By adjusting the screw 58 the crank arm is forced to the right as viewed in Figs. 2 and 4 thereby causing the pin 53 to actuate pusher rod 46 to the right. The pusher rod carries with it the member 38 thereby moving the post in a direction parallel to the axis of the spindle i. This movement of the member Bil compresses spring 69. Retraction of the adjustment screw 58 permits the spring to return the member 36 to the left maintaining the pusher rod iii against the pin 53. it will thus be apparent that by adjusting the screw 58 forward and backward the member 36 is moved lengthwise of sleeves l5 and 38 relative to the carriage l i.

The member 33 when unlocked by releasing lock screw fill is rotatable about the sleeves 5 and'sil. This provides spaced bearing surfaces for the member thereby enabling the operator to rock the member and the work supportingpost 3! carried thereby about the axis of the sleeves 35, iii. In order to limit the rocking movement of the member 3% the member is provided with a stop lug 6i secured thereto by lock screw 62, the lug 6! being engageable with a stop pin 63 adjustably supported on a projection to of the carriage ii.

The adjustment provisions for post 35 and clamp 38, Fig. 1, permit the positioning of the work such as tools at variouspredeterminable angles relative to the surfaces !2 of the work shaping elements 9 and 9a. By manipulating adjustment screw 58, the work may be moved into the cuttin surface l2 while rocking the work to and fro across the face or" the surface l2.

Having described a form of work supporting means such as disclosed in 'my aforesaid application (Serial No. 575,749), I will now describe a further form of work supporting means which may be mounted upon the end portion of rocking member 33 adjacent the stop lug 61; Fig. 4. A coupler iii is provided for this purpose, it having a split sleeve H which may be secured in adjusted position on the rocking member 30 by locking element 72. The coupler it also includes a second sleeve or socket l3 with lock screw 73a for receiving in adjusted position, a post it simplurality ofdiiferent size spacer elements 83..and.

a threaded abutment 82 receivable in a threaded aperture at the end of rod 8i Work stock such as wheels, gears, cams, etc. may be clamped between the abutment 82 or one of the spacer elements 83 and another of the spacer elements, one or more of the spacer elements being removed to receive the work stock on the rod of 85.

In work shaping apparatus it is frequently required that the work stock be properly positioned so that the portion thereof to be cut or otherwise shaped, be held for a given angular relationship with respect to the working surface of the wheel 9a. This is accomplished by means of a positioning device which includes split sleeve 84 adapted to be clamped by lock screw 85, Fig. 2, in desired position on post 74, or if desired, on rod Hi, the sleeve being provided with an opening to receive an elongated element 86. adapted to be locked in position also by element 85. The element 86 has a transverse opening 81 (Fig. 3) therethrough and an adjacent set screw 88 for securing a positioning finger 89 or if desired, a flat spring in desired relation with respect to work supported on rod iii).

In operation, it will be clear that with the coupler lb clamped tightly on rocker member till, the work supported by the rod 83 will be moved toward and away from the grinder wheel So cross-wise of the surface 82 thereof as the mem-- ber 39 is rocked. It Will also be clear that the work may be supported at any desired angle with respect to the cutting surface 12. of wheel 9a. This angular adjustment being obtained by adjustment of post 'M about its longitudinal axis, by adjusting rods '15 and all longitudinally and rotatably relative to their respective longitudinal axes. As previously pointedout the. finger 89 may be adjusted to locate the end thereof in a position against which some part of the work maybe positioned. Thus, where like pieces of work are to be similarly shaped the operator may,

for a given adjustment position of the work supporting post id, rods "55, 8t and finger B9, quickly exchange one piece of Work for another.

In Figs. 5, 6 and 7 I show. an alternativeembodim'ent of the invention wherein the work supporting structure may be mounted directly upon a rocking member comprising also a guide bar for adjustment of the structure parallel to the axis of the spindle. For example, the rocking 5 bar 90 may be of the character adapted to be mounted on the base I closely adjacent the grinder head 4. The bar 90 may be of the character disclosed in U. S. Patent 2,144,095 whereby turning adjustment of member 9! is adapted to move the bar 90 in one longitudinal direction or the other, while at the same time permitting the bar to be rocked about its longitudinal axis. The coupler for the work supporting structure maybe similar to the coupler 10 but preferably is of the character shown in Figs. 5, 6 and 7. For example the coupler 94 is provided with a longitudinal bore to receive the bar 90, the coupler being provided with a lock screw 95 to secure it to the bar. The coupler 94 also includes a vertical socket 96 disposed at right angles to the bore and provided with a lock screw 91 to secure post 14 therein. The post 14 in this embodiment however is shown to support a different type of work supporting device I which I call the V block. In the apex of the V block I00 is a bore for retention of a rod IOI, lock screw I 02 being provided to hold the rod in adjusted position. One end of the rod IOI is provided with an open ing to receive an elongated end piece I03 which is held in adjusted position by lock screw I04. The end piece is also provided with an adjustment screw I05 threaded on one end of the piece I03 for adjustment axially of the V block, the adjustment element being held in desired position by set screw I09. The V block is also provided with an upper clamp consisting of two threaded members H0 and III threadably received in openings provided in the sides of the block, the two pieces supporting a cross bar H2 which contains an adjustment screw I I4 threaded therein in alignment with the apex of the block. If desired a second cross bar like bar IIZ may be used at H5, or bar H2 may be located at II5.

From the foregoing description it will be clear that work stock may be adjusted longitudinally within the trough of the V block or inserted in the same position, front or back against screw I05, and clamped therein by screw I54. Thus held in position the work stock may be adjusted at different angles for forward and rearward movement relative to the wheel 90., this adjustment being obtained by revolving post 14 and rod I09. If desired the work positioning structure including finger 89 may be supported either on the right hand end of rod I89 or on post 14.

In Fig. 6A I show a variation of the V block wherein the clamp screw II 4a is supported by a cross piece I [-211 carried by a post I I0a adjustable in an opening extending through a V block extension H00, to which rod I09a may be made integral. This clamp arrangement is easier and handier to manipulate than clamp II4 of Figs. 5 to '7, and also takes larger work stock H3.

In the embodiment shown in Figs. 8 and 9 a further variation of the work supporting structure i shown. The coupler is formed integral with the rocking member I30 which may be similar to rocking member 35, Figs. 1-4, or it may be secured to a rocking bar 90 as shown in Fig. 8. The rocking member includes a socket I13 for post 14 and a centrally located socket I 3I which may support a work supporting post 3| similarly as shown in Figs. 1 and 2. I

As shown in Figs. 8 and 9 the socket I13 supports post 14 in desired position, the post in turn being provided with adjustment rod 16 which supports a spacer rod I34. The spacer rod I34 in turn is provided with a pair of centering elements I35 and I38 each having a sleeve I31 anda lock screw I38 by which they may be adjusted in desired position on rod I34. The outer end of each centering element may be provided with a pointed pin such as indicated at I39, held in a split sleeve I40 by lock screw I4I. Preferably, however, I provide one of the centering elements with pin I39 and the other (136) with a releasable control I42 by which the work may be revolved easily for different cutting operations, and also easily and quickly replaced.

Control I42 includes a U-shaped bearing arrangement I43 and I44 at the upper end of centerin-g element I36. An elongated centering pin I45 extends through bearings I43 and I44, the pin having a ring I46 keyed thereto for coaction with springs I41, whereby pin I45 is urged toward pin I39. Adjacent the pointed end of pin I45 is a driver I48 carried thereby to engage work and at the other end of pin I45 is a crank I49 whereby work canbe revolved for proper positioning or for rotating the work for cylindrical grinding. The spring I41 renders it possible for quick removal and replacement of work while maintaining a force between the centering elements. The element I36 is also adjustable as indicated by spline 1 3411 on rod I34 to vary the spacing between points of pins I39 and I45, for supporting various types of work.

While the centering elements are shown to be supported on a post mounted on the integral member I30 it will be clear that the post 14 with centering elements etc. may be used in the sleeve 13 or 96 of the couplers 10 and 94, Figs. 2 and 6.

In Figs. 10 and 11 I have shown another form on which the centering elements may be mounted. In this form the supporting post 14 carries a shaft I50 which in turn carries brackets I5I and I50.

for supporting rod I53 and a slidable bracket I52 which supports rod I54. The rods I50, I53 and I54 are parallel to each other, the brackets having means for locking the rods in desired relationship. The rod I54 supports centering elements I35a and I361: similarly as indicated in Figs. 8 and 9, except here they are shown disposed horizontally.

It will be noted that the rod I53 is disposed beneath rod I54. The purpose of rod I53 is to provide a fixed bearing surface for proper retention of rod I54 and thereby centering elements I35a and I36a. This bearing relationship is obtained by means of a hard pin depending from the slide I52 on bar I50. The pin I55 bears against the upper side of rod I53. This supporting arrangement provides a steadier support for the work and enables theoperator to shift the rod I54 relative to the supporting post 14 with as-.

suranoe that when pin I55 engages rod I53 it is in the proper vertical or angular position.

The post 14 is shown to include a series of key ways I14 whereby a quick vertical positioning of the posts may be facilitated with respect to the socket I51 of coupler I58 (similar to coupler 10, Figs. 1 to 4). As shown in Fig. 11 a key I15 received in one of the key ways of post I14 may engage notches IBO- or notches IBI depending on the desired angular position of post 14. As shown in Figs. 6 to 8 the post 14 may have this key adjustment feature in addition to the socket looking element I13a. If desired other supporting rods such as, for example, rod I09, Figs. 5 and 6, may also include this key way adjustment feature.

In Fig. 12 I show a work supporting bracket that may be used in the place of slide bracket I52 (and also rod I53) for supporting a vertical '7 post similar to post M. This bracket includes a sleeve I64 to receive rod led, the bracket including 2. depending pin 8'65, the same as 555 in bracket I52, to bear upon rod I53. The bracket further includes a socket 966 for reception of vertically disposed posts used in conjunction with other forms of work supporting structures.

While I have shown and described the principles of my invention in connection with specific apparatus it will be clear that many variations and separate sub-combinations may be made without departing from the invention. It should therefore be understood that the embodiments shown are illustrative of the invention only.

I claim:

1. In a work shaping apparatus having a spindle and a work shaping wheel carried thereby, a member rockable about an axis parallel to said spindle; said member having a portion coaxially disposed with respect to said axis, a post, a coupling element provided with a first sleeve receivable on said portion, means for securing said first sleeve'in desired position thereon, a second sleeve disposed at right angles to said first sleeve to receive said post, and means to secure said post in desired position in said second sleeve, said post having a transverse opening therein, a work supporting means including a rod receivable through said-opening andmeans for adjustably securing said rod to said post, whereby rocking movement of said member moves said work supporting means back and forth relative to the working surfaces of said wheel.

2. A work shaping apparatus according to claim 1 wherein said work supporting means'includes a second rod and a plurality of spacer olements receivable on said second rod, and means for securing work stock on said second rod, cer tain of said spacer elements being used to determine the position of said work stock on said rod.

3. A work shaping apparatus according to claim 1 wherein said coupling element includes means connecting said second sleeve in offset relation with respect to said first sleeve whereby said post is adjustable axially through said second sleeve without interference by said first sleeve.

4. A work shaping apparatus according to claim 1 wherein the rockable member includes means for axially adjusting said portion while allowing said portion to be rocked about said axis.

5. In a work shaping apparatushaving a spindle and a work shaping wheel carried thereby, a member rockable about an axis parallel to said spindle, a post, a coupling element for supporting said post on said member with the axis of said post transverse to the axis of said member, a work supporting means carried by said post including a rod extending outwardly from said post, a plurality of spacer elements receivable on said rod, and means for securing work stock on said rod, certain of said spacer elements being used to determine the position of said work stock on said rod.

6. In a work shaping apparatus having a spindle and a work shaping wheel carried thereby, a member rockable about an axis parallel to said spindle, a post, a coupling element for supporting said post on said member with the axis of said post transverse to the axis of said member, a work supporting means carried by said post including a rod extending outwardly from said post, a plurality of spacer elements receivable on said rod, means for securing work on said rod, certain of. saidspacer elements being used to determine the position of said work on said rod, a positlon i ing device for said work including an elongated element, a sleeve securable on said post havingsupporting means including two centering elements and means for adjustably supporting said centering elements at spaced points.

8. In a work shaping apparatus having a spindle and a Work shaping wheel carried thereby,.a member lockable about an axis parallel to said spindle, a post, a coupling elementfor supporting aid post on said member with the axis of said post transverse to the axis of said member, a work supportin means carried by said post including a rod extending outwardly from said post, said rod including a transverse opening therethrough and said work supporting means further includes a second rod receivab-ly secured in the opening of the first mentioned rod, two centering elements, and means'ior adjustably securing said centering elements at spaced points on saidseccnd rod.

9. In a work shaping apparatus having a spindle and a work shaping wheel carried thereby, a

- m mber rockable about an axis parallel to Said spindle, a post, a coupling element for supporting said post on said member with the axis of said post transverse to the axis of said member, a work supporting means carried by said post including a rod extending outwardly from said post, a second rod carried by the first mentioned rod at an angle thereto, and means for supporting work stock on said second rod.

16. In a work shaping apparatus having a spinand a work shaping wheel carried thereby, a carriage, a bar located remote and parallel to said spindle for guiding the carriage for movement in directions parallel to said spindle, said carriage having a rocking member the axis of which is parallel to said spindle, a post, a coupling element provided with a first sleeve receivable on said rocking member, means for securing said first, sleeve in desired position thereon, a second sleeve disposed at right angles to said first sleeve to receive said post, desired position in said second sleeve, and means for adjustably sup-porting work on said post, whereby rocking movement of said rocking member causes said post and work supported thereon to be rocked back. and forth relative to said Wheel.

11. In a work shaping apparatus, a post, a work sup-porting means carried by said post, said work supporting means including two parallel rods carried by said post, a work supporting member, bearing means to support said member on one of said rods, and means on said member to bear against the other of said rods.

12. In a work shaping apparatus, three rods, means to maintain said rods in parallel relation, said means including a bracket to support two of said rods in spaced relation, said bracket being rotatable and movable lengthwise of one of said two rods, and means onv said bracket for bearing against the third rod.

means to secure said post'in 13. In a work shaping apparatus, a post having a transverse opening therethrough, a rod disposed through said opening, a pair of brackets mounted in spaced relation on said rod, said brackets having transverse openings therethrough, a second rod disposed in said openings, and a third bracket sl'ideably mounted on the first mentioned rod and having a part eng-ageable with said second rod, said third bracket having means for supporting work thereon.

14. In a work supporting apparatus according to claim 13, wherein the means for supporting work on said third bracket includes a third rod supported by said bracket, and a pair of centering elements carried in spaced relation by said third rod.

15. In a work shaping apparatus having a spindle and a work shaping wheel carried thereby, a member rockab-le about an axis parallel to said spindle, a post, a coupling element for supporting said post on said member with the axis of said post transverse to the axis of said member, a work supporting means carried by said post, said work supporting means including a first rod extending transversely thereof, means for supporting a second rod in parallel relation to said first rod, a work supporting member carried by said first rod and adjustable lengthwise thereof, said supporting member being adapted to engage said second rod to ensure proper angular relation for difierent positions along said first rod.

16. In a work shaping apparatus having a spindle and a work shaping wheel carried thereby, a member rock'able about an axis parallel to said spindle, a post, a coupling element for supporting said post on said member with the axis of said post transverse to the axis of said member, a work supporting means carried by said post, said work supporting means including a first rod extending transversely of said post, a pair of brackets mounted in spaced relation on said first rod for supporting a second rod parallel to said first rod, a third bracket mounted for movement lengthwise of said first rod and having a part adapted to bear against said second rod, and means for supporting work from said third bracket.

1'7. In a work shaping apparatus having a spindle and a work shaping wheel carried thereby, a member rockable about an axis parallel to said spindle, said member having a portion coaxially disposed with respect to said axis, a post, a coupling element provided with a first sleeve receivable on said portion, means for securing said first sleeve in desired position thereon, a second sleeve disposed at right angles to said first sleeve to receive said post, and means to secure said post in desired position in said second sleeve, said post having a transverse opening therein, a work supporting means including a rod receivable through said opening, means for supporting a second rod parallel to the first mentioned rod, a part slideably supported on one of the rods and adapted to engage the other of said rods, said part havin means to support work thereon, whereby said work may be moved lengthwise of said rods while rocking movement of said member moves said work back and forth relative to the working surfaces of said wheel.

. EMI-L F. HAGER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 132,763 Hopkins Nov, 5, 1872 705,226 Ettinger July 22, 1902 727,981 Lomasney May 12, 1903 1,920,073 Gorton July 25, 1933 2,139,938 Dixon Dec. 13, 1938 2,144,095 Swick Jan. 1'7, 1939 2,252,287 Helfgott Aug. 12, 1941

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