US2000608A - Grinding machinery - Google Patents

Description

May 7, 1935- w. PEASLEE Er AL v 2,090,608

GRINDING MACHINERY Filed April 5, 195s s sheets-sheet 1 May 7, 1935- w. PEAsLEE Er AL 2,000,608

RINDING MACHINERY L Filed April 5, 1953 3 Sheets-Sheet 2 May 7, 1935. w. PEASLEE Er AL 2,000,603

GRINDING MACHINERY Filed April 5, 1953 3 Sheets-Sheet 3 Patented May 7, 1935 i UNITED STATES PATENT OFFICE GRINDING MACHINERY Willetts Peaslee and Lester F. Nenningel, Cincinnati, Ohio, assignors to Cincinnati Grinders Incorporated, Cincinnati, Ohio, a corpora'- tion of Ohio Y v Application April 5, A1933, Serial No. 664,571

14 Claims. (Cl. 51-49) This invention relates to improvements in therefore, be appreciated that even though the machine tools and particularly to improvements invention is shownras utilized with the traveling in grinding machines. wheel head type of machine, it can readily be An object of the present invention is the promounted on the standard or conventional type vision of an improved work supporting mecha- Vof machine in which there is employed a Work 5 nismA4 for use with grinding machines which are supporting table translatable relative to the bed particularly adapted for the grinding of large and to a grinding Wheel operating on the work heavy work pieces. on the table. In the past it has been necessary Another object of the invention is the provifor the operator to adjust the setting o f the 1.0, sion. of a mechanism for supporting Work pieces rjournal rest manually and to effectV said adjustin a grinding machine which may be controlled ment while in proximity thereto while with this and adjusted from a point remote therefrom. invention the setting of the journal rest may A further object of the invention is the probe varied from a positionv remote from said rest vision of a journaled rest for use with roll and without the operator leaving his normal grindingl machines that is adapted to be adstation or position, l5 justed from the normal operators controlsta- As seen in Figures l and 2, the grinding mation which is remote from the rest itself. chine itself comprises a bed Il) mounted on a Other objects and advantages of the present platform II, here shown as composed of coninvention should be readily apparent by refercrete and formed integral with the normal floor ence to the following specification considered I2, but disposed in a plane below the plane .DI 20 in conjunction with the accompanying drawthe floor. Entirely Surrounding the platform ings forming a part thereof, and it is to be and formed between the platform and avertical understood that any modications may be made Wall which terminatesL at the floor level is a in the exact structural details there shown and channel I3 employed as a tank for the coolant described, within the scope of the appended utilized iin the operation Ofthe machine. ,In 25 claims, without departing from or exceeding the effect the bed Il] is mounted on Van island spirit of the invention. e substantially surrounded by liquid which is. the In the drawings: Y Y coolant directed against the work and wheel .Figure l is a front elevation of a grinding during .the grinding Operation. Y machine embodying the improved journal rest The bed IIl is provided substantially through- 30` of this invention. out its length with a rearwardly .extending pro Figure 2 is an enlarged fragmentary sectional jection I4 on which are formed guideways (not lview taken on line 2-2 of Figure 1. shown) for guiding the grinding wheel carriage Figure 3 is an enlarged fragmentary sectional I5 in its travels lengthwisefof the bed. The

35 view taken on line 3-3 of Figure 1. carriage l5 has journaled therein a Spindle I6 t0 3.5'

Figure 4 is a transverse sectional View taken the forward end 0f whichis secureda grinding online 4 4 oi Figure 2 and showing the control wheel Il, The wheel I'l and its spindle IS are or operating mechanism. rotated at the usual high grinding rate of speed Figure 5 is a fragmentary transverse sectional by 2 prime mover or mOtOr I8 mounted 0n the View taken 0n line 5-5 0f Figure ,2. Y upper surface of the carriage l5. The motor 40 Figure 6 is a top plan View of the machine 1 8 is connected with the Spindle I5 by a Suitable shown in Figure 1. transmission such as belts or gearing enclosed Figure 7 is a wiring diagram illustratingthe within the guard :L9 Secured to the carriage |5-r electrcal circuits utilized in this invention. Also mounted von the carriage I5 is a stand 29 Y Throughout the several views of the drawings bearing a seat 2l for the operator whereby the 45 similar reference characters are Aemployed to operator is ,disposed in position to at all times denote the same or similar parts. watch the action of the Wheel Il on the work.

In general this invention pertains to a journal The :front portion of the bed I0 is formed on rest as employed in roll grinding machines and its upper surface With a fiat guideWaY 22 and particularly to such rests when kutilized with an inverted V-guideway 2.3 for receiving and 50 large or heavy roll grinding machines and is .aligning the journal rests and tail stock. At adapted to, be adjusted to shift the axisV of the the other end the bed is slightly undercut Vas work at one end thereof and thereby align said at 24, see Figure 1, to which is bolted .a prime Y'axis with the path of travel `of either the work mover 25 coupled with the driving mechanism support itself or the grinding Wheel. Itwill, in the head stock 26. The head stock 26 tere minates in a face plate 21 from which projects a center 28 in line with the center 29 of the tail stock 30. The face plate 21 also has projecting from it driving dogs 3l whereby the work is rotated.

As shown in Figure 1, the work is a large roll, the body portion 32 of which is shown in phantom lines and from` each end of which projects the journal bearings 33 and 34 shown in heavy or solid lines. The journals 33 and 34 are supported by bearing shoes associated with the journal rests indicated generally in Figure 1` by the numerals 35 and 3S. The journal rests are similar in all respects and it is believed that a description of one of them will suflice for the both. Y Accordingly the journal rest 36' comprises a casting or housing 31 having formed therein at angles to one another bores 38 and 39 respectively receiving bearing shoes 40 andv 4I. The bearing shoes are adaptedto be axially shifted toward the center of the work along lines-that intersect on the axis thereof, for which purpose the shoe 48 has rotatably journaled therein a nut 42V while the shoe A4I is formed with rack teeth 43. Meshing with the threads of the nut 42 is a screw 44 journaled intermediate its ends in a housing-45 formed integral with the main housing or casting 31. Secured to the end of the screw 44 and enclosed within the housing 45 is a worm wheel 46 meshing with a worm 41 and constituting a means for holding the screw 44 against rotation when the nut 42 is rotated relative thereto. f Integral with and serving as a means for rotating the nut 42 is a hand wheel 48 whereby the shoe 49 is axially shifted.

The shoe 4I has meshing with its rack teeth 43 a rack pinion 49 keyed or otherwise secured to a stub shaft 59 rotatably journaled in the main housing or casting 31. Also keyed or otherwise secured to the stub shaft 50 is a form wheel 5I meshing with a worm 52 integral with or secured to a vertically extending shaft 53. The vshaft 53 is journaled in suitable antifriction bearings 54 carried by the casting 31- as well as in a plain bearing 55`formed in the casting above the shoe 40. Theshaft 53 passes through an elongated perforation 56 formed in the bearing shoe 40 and the shaft has secured to it beyond the bearing 55, ahand'wheel 51 whereby said'shaft isactuatedand whereby the shoe 4I is manually axially adjusted.

' From the foregoing it will be noted that the shoes 39 and 40 are manually adjustable axially of themselves toward the axial center of the work for setting up purposes and'the like as when initially adjusting the parts to suit a given journal bearing size prior t the grinding of the roll. In practice it frequently happens that the work may be being ground with a slight taper such as a thousandth of an inch or so from one end to the other. This mis-alignment may be corrected by inching, that'is slightly shifting the large end of the work toward the grinding wheel, which may be effected by slightly rotating the hand vwheel 48 and nut 42. This, of course, would necessitate the operator leaving his'station or seat 2| on the grinding Wheel carriage and traveling around the machine to the front thereof to accomplish the said adjustment. This it .will be appreciated entails a considerable loss of productive time, both on the part of the operator and the machine, since the machine must necessarily,y remain idlevuntiltheoperator returns to his seat. By thisl invention this loss of'productivev time is unnecessary and is eliminated, since there is provided means for adjusting the shoe 40 from his normal operating position.

This inching or adjusting means comprises the worm and worm wheel 4G and 41 above referred to, the former being secured to one end of the adjusting screw, while the latter is formed integral ,with or otherwise secured to a Worm shaft 58 rotatably journaled in bearings provided by the housing 45. Keyed or otherwise secured to the shaft 58 is a ratchet 59 having teeth 60 cooperating with a pawl 6l. The pawl 6l is pivoted at 62 to a lever 63 loosely journaled on the worm shaft 58. A spring 64 is provided and has one end secured to the lever 63 while the other end is secured to the pawl El and acts to hold the nose of the pawl 6l at all times in engagement with the teeth 69 of the ratchet 59. The free end of the lever 63 is connected by a pin and slot connection 65 with the movable core 66 of a solenoid 61 secured to an inner wall of the main housing or casting 31.

It Will be understood that the solenoid 61, its core, the lever 63, and ratchet and pawl are so related that a movement of the core 66 will effect a denite advance or rotation of the ratchety 59. This rotation of the ratchet 59 consequently rotates the worm 41 and worm wheel 46 thereby rotating the screw 44 relative to the nut 42 and axially adjusting the position of the shoe 40. In order to insure the rotation of the screw 44 and the nut 42 remaining stationary, a clamping mechanism is provided. This clamping mechanism comprises a clamp pin 88 disposed in an aperture formed in the shoe 48 and contacting on one end with the nut 42. The free end of the clamp pin 68 is beveled to form a cam face 88 which contacts with a co-operating cam face 89 on a push pin 98 disposed in an aperture formed in the shoe 40 at right angles to the aperture for the clamp pin The outer end of the push pin aperture is threaded fora clamp screw 9| which has a screw drive slot therein.

From the foregoing it will be noted that by screwing the clamp screw 9| inwardly, access to the screw slot being had through the spokes of the handwheel 48, will urge the push pin 90 inwardly and through the co-operating cam faces 89 and 88 will shift the clamp pin 68 outwardly into clamping Contact with the nut.

The solenoid 61 is, of course, electrically operated and the solenoid therefore includes a push button type of switch whereby it is completed. This push button may be any one of the push buttons B9 carried by a control panel or board on the standard 19 extending upwardly from the grinding wheel carriage and therefore at all times movable with the operator and within his reach without in any wise leaving his normal control station. From this it will b e seen that he need only press the desird'- push button switch for either shifting the right hand end of the work through the journal rest mechanism 36 or the left hand end of the work through the The inner end of f the front of the bed andI whichfconveniently maybe apart of thev at'guideway22. .u

Upon release of--the clampingmechanism 'the journal rests andi-36 maynbefindependently translated .together with the mechanism carried thereby relative to the flat andV-guidewaysfn and 23. For this purpose-there Vis provided "La relatively short shaft 'I8r journaledin a1be`ari'ng provided by the housing extensionI 45; .Interiorly the housing 31 and"projectingfrom; one, Wall thereof is a boss '19 in whichisjournaled aseo,.- ond short shaft 80. These'shafts are connected together byuniversal joints 81! and Bland-,1an

intermediate shaft 83. g Secured Ito, theshaft .80.

adjacent the boss 19 isa rack pinion 84 me shing with a rack-,85 secured-to .the flattened apex 86 of the inverted V-guideway 23." I'he outerend 81 ofthe shaft is g'ive'nan angularcrosssectionfor thel receptionof 'afsuitablelwrench or the like whereby the'jointed shaft may be rotated for correspondingly rotating the rack4 pinion 84 and traversing the journal rests relative tothe I It is believed that the operation of the improved Y remotely controlled Vjournal rests will be readily understood and thatthe bearingshoes thereof Jmay be manually adjusted for initially setting up the machine' andy the like. and may be subsequentlyr adjusted.=from 'the operators position for taking care of mis-alignments and thel like. Y;

:What-isClaimedisx` f 1. In a grinding machine of the class described the combination of a bed, a grinding wheel carriageV .mounted on -thelbed, an adjustable Work support mounted on 'the bed, means associated with the work support for eiecting its adjustment an operators station on the grinding wheel carriage, and control means operable at the operators station for actuating the work support adjusting means.-

2. In a roll grinder of the class described for grinding rolls which have cylindrical journals projecting therefrom the combination of a bed, journal rests on the bed receiving the journals of the rolls, means associated with the journal rests for effecting an adjustment thereof a grinding wheel mounted on the bed, and means remote and apart from the journal rests but connected with their adjusting means for operating the journal rest adjustments means for modifying the supporting action thereof.

3. In a roll grinder for grinding rolls from which project journal bearings the combination of a bed, a journal rest mounted on the bed for receiving the journal bearing, a pair of shoes associated with the rest, manual means for shifting the shoes relative to the rest, additional means for further shifting one of said shoes and means remote and apart from the rest for controlling the operation of said additional means.

4. In a roll grinder for grinding rolls from which project journal bearings the combination of a bed, a journal rest mounted on the bed for receiving the journal bearing, a pair of shoes associated with the rest, manual means for shifting the shoes relative to the rest, and means remote from the rest for modifying the position of one of the shoes, said means including electro-magnetic means operatively connected with the shoe, and means remote therefrom for energizing the electro-magnetic means.

5. In a journal rest or support for use with roll grinding machines the combination of a bracket, a pair of shoes mounted in the bracket for movement relative thereto, manual means for each shoe for independently adjusting the Y positions thereof, oneof said manual means including a lnut rotatably .carried bythe shoe, a

screwv operatively connected, withthe nut and i journaled in the bracketfor independent rotation;y and `Vpower actuated means'for rotating the 'screw independent of the rotation of the nut.

6.*In ajournalrest or "support for use with roll'grinding 'machines the combination of-a bracket, 'a pair of shoes mounted. in thebracket for movement.' relative `vthereto, manual means for f eacha shoe- "for independently adjusting the positionsthereof,` one of said' manual means 5 including-'a''nut rotatably carried by theshoe, a screw operatively connected; with thenutfand journaled in-the bracket -for independent rotation-power actuated vmeans for-rotatin`g -the screw independent'of the rotation of th'enut, and means locking the nut against rotation to permit rotati'on'o'f the screw.

7. In a journal Arest orl support for use with roll grinding machines Vthe combination `ofj'a bracket,a -pair of shoes mounted inthe bracket for movement relative thereto,-manual means for-eachV shoe'for independently adjusting the positionsthereof, onev of said manual-means including a nut rotatablyfcarried by the'shoe, a screw operatively connected` with the nut and journaled in the bracket forindependentrotation, .power :actuated means for rvrotatingthe screwv independent. of the *rotationr of the fnut, and means. locking the nutagainst. rotation to permit rotation of the screw, said screw rotating means including av worm and worm-"Wheel,

a ratchet for rotating the Worm, and electro-V magnetic means for incremently rotating the ratchet.

8. In a journal rest or support for use with roll grinding machines the combination of a bracket, a pair of shoes mounted in the bracket for movement relative thereto, manual means for each shoe for independently adjusting Vthe positions thereof, one of said manual means including a nut rotatably carried by the shoe, a screw operatively connected with the nut and journaled in the bracket for independent rotation, power actuated means for rotating the screw independent of the rotation of the nut, and means locking the nut against rotation to permit rotation of the screw, said screw rotatingA means including a worm and Worm wheel, a ratchet for rotating the worm, electro-magnetic means for incremently rotating the ratchet, and means remote from the journal support for energizing the electro-magnetic means.

9. In a work supporting mechanism for use with machine tool organizations the combination with a bed having formed thereon guideways, of a housing or bracket having cooperating guideways mounted on the bedways, a pair of contact shoes carried byV the bracket for movement relative thereto into engagement with l the work, manual means for initially adjusting the positions of the shoes, and power means for modifying the position of one of said shoes.

10. In a work supporting mechanism for use with machine tool organizations the combination with` a bed having formed thereon guideways, of a housing or bracket having cooperating guideways mounted on the bedways, a pair of contact shoes carried by the bracket for movement relative thereto into engagement with the work, manual means for initially adjusting the positions of the shoes, power means for modifying the position of one of said shoes, means for clamping the housing to the bed, and means for translating the housing relative to. the bed when un-clamped.

11. In a work supporting mechanism for use with machine tool yorganizations the' combination with a bed` having formed thereon guideways, of a housing lor bracket having cooperating guideways mounted onthe lbedways, a pair of contact shoes carried by the `bracket forV movement relative thereto into `engagement with the work, manual means for initially ade justing the positions of the shoes, power-means for modifying the position of one of said shoes, and means for rendering the manual means inoperative prior to the operation of the power means. Y l

12. In a work supporting mechanism for use with machine tool organizations the combination with a bed having formed thereon a flat and a V-guideway, of a housing having cooperating guideways mounted on the bedways, a pair of contact shoes carried by the housing for adjustment relative thereto into engagement with the work, means carried by the housing Yfor effecting the adjustment of the shoes, a rack secured to one of the bedways, a pinion rotatably mounted on the housing in meshwith Vthe rack, and means extending from the pinion through and beyond the housing for rotating the pinionY and translating the housing relative tothe bed. Y.

13. In a work supporting mechanism for use with machine tool organizations the combination'with a bed having formed thereon a at and a V-guideway, of a housing having cooperating guideways mountedV on the bedways, a pair ofV contact shoes carred'by the housing for adjustment relative theretointo engagement with the work, means carried by the housing for effecting the adjustment of the shoes, a rack secured to one' of the bedways, a pinion rotat-v ably mounted ,onthe housing in mesh with the rack, means extending from the pinion through and'beyond the housing for rotating the pinion and translating the housing relative to the bed,

Aand means for clamping the housing to the bedways. Y y

14. In a mechanism of the class described the combination of a bed, a grinding wheel vsupport mounted on said bed, a work support Yon said bed for Y supporting a work piece substantially at the terminals thereof, said `Work piece and grinding wheel having their axes extending in substantially parallel planes, means for axially shifting one of said supports relative to the other, means associated with said work supports for effecting an adjustment of the terminal portion thereof to shift the work toward the; grinding wheel to bring the axes. of the Work and wheel into parallelism, and control means remote and apart from said work support to effect the operation of said adjusting means, said adjusting means being electro-magnetic in nature. y l

WILLETTS PEASLEE. LESTER F. NENNINGER..

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