US1367523A - Mechanical compound grinding-head for grinding two cylindrical machine parts at the same time - Google Patents

Description

, T. F. BERNARD. MECHANICAL COMPOUND GRINDING HEAD FOR GRINDING ,TWO CYLINDRICAL MACHINE PARTS AT' THE SAME TIME.

APPLICATION FILED APR. 1. 1920.

1,367,523. Patented Feb. 1,1921.

4 SHEETS-SHEET I.

I W! TN ESSES INVENTOR J FM fomm T. F. BERNARD.

MECHANICAL COMPOUND GRINDING HEAD FORISRINDING TWO CYLINDRICAL MACHINE PAR-IS I AT THE SAME TIME.

APPLICATION FILED APR.1. 1920.

1,367,523. Patented Feb. 1, 1921 4 SHEETSSHEET 2.

WITNESSES INVENTOR E MM M. 1% ffiwm -T. F. BERNARD. MECHANICAL COMPOUND GRINDING HEAD FOR GRINDING TWO CYLINDRICAL MACHINE PARTS AT THE SAME TIME.

APPLICATION FILED APR. I. 1920. 1,367,523. Patented Feb. 1,1921.

4 SHEETS-SHEET 3.

WITNESSES INVENTOR T. F. BERNARD. MECHANICAL COMPOUND GRINDING HEAD FOR GRINDING TWDDYLINDRICAL MACHINE PARTS AT THE SAME TIME.

APPLlCATION FILED APR. I. I920.

Patented Feb. 1, 1921.

4 SHEETS-SHEET 4.

INVENTOR W/TNESSES UNITED STATES PATENT GFFICE.

THEIS IE. BERNARD, OF DETROIT, MICHIGAN, ASSIGNOR T0 FREDERICK M. EHEI-IALT, OF DETEQIT, MICHIGAN.

DIEGHANICAL COMPOUND GRINDING-HEAD FOR GRINDING TWO GYLINDRICAL MACHINE PART$ AT THE SAT E TIME.

AppIication filed April 1, 1920.

To all to 710m it may concern Be it known that I, TI-IEIS F. BERNARD, a citizen of the United States and residing at the city of Detroit, county of "Wayne, State of Michigan, have invented certain new and useful Improvements in hllechanical Compound Grinding-Heads for Grinding Two Cylindrical Machine Parts at the Same Time and declare the following to be a full clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and. use the same, reference being had to the accompany ing drawings which form a part of these specifications.

The objects of my invention are to providea more rigid means for holding and grinding two cylindrical parts at the St me time, on a single grinding wheel, and to have a solid and rigid adjusting frame for carrying the upper spindle; adjustment -for varying this frame to bring the mechanical part in contact with the surface of the grinding wheel, and to have adjustable spindles for the varying lengths of the pieces to be ground.

It is a further object of my invention to secure simplicity in construction, accuracy of adjustment, and ease in operation. These several objects are secured in the preferred form by the construction and arrangement of the parts as are more fully hereafter de scribed.

Similar parts, on all drawings are marked by the same numerals.

Figure 1, is a front view of the grmdmg head showing the general arrangement of the supporting frame for the'double grind ing spindles, with means for adjusting same to the grinding wheel.

Fig. 2,, is the top view showing the vertical arrangement of the grinding spindles, with the driving and adjusting parts.

Fig. 3, is an end view showing the driving gears of the double s -indles. and the adjusting frame.

Fig. at, is a sectional view -AA- as is shown on Fig. 2, showing the secondary adjusting frame for the alinement of the upper spindle with the lower spindle.

Fig. 5,. is a sectional view BB- as is shown on Fig. 3, showing the complete arrangement of the double spindles, with the Specification of Letters Patent.

Patented Feb. 1, 1921.

Serial No. 370,437.

adjusting sleeves, racks, and means for operating same.

l I will now describe more fully, the Work- 111g parts and the construction thereof. rcferring to the accompanying drawings-and the marks thereon.

The compound grinding head is to be used in connection with the horizontal table of a grinding machine and mounted thereon and securely fastened thereto by the swivel base plates 1 and 2 \Yl'llCll are pivoted together at the center by pin 3, base plate 1 carrying at each end solid and permanent been ings d and 5. Mounted thereon is a solid adjusting frame 6 which is pivoted to both bearings 4L and 5 by means of the hollow sleeve collars '7 and 8 passing through the bearings and allowing the adjusting frame 6 to rock on the pivot bearing sleeves. The adjustable bearing 6 is held securely in place by means of a coil spring 47 which. passes through the frame and fastens to the base plate 1. Also the drive pulley 15 is placed outside the axis of the grinding spindles and causes an upward pressure by the belt, thus rocking the frame '8 more firmly against the supporting base plates. In the center of the arm of the adjustable frame 6 is a micrometer adjusting screw d8, any turning of which will rock the frame 6 about the lower grinding spindle, giving adjustment to the secondary spindle above so as to bring the work against the surface of the grinding wheel. The micrometer screw 48 is kept from turning by a pressure plug 49 and a coil spring underneath the plug. At the driven end and within the sleeve bearing 8, is an. adjustable sleeve 9 and which is threaded thereto at one end and securely fastened by locknut 10, which provides for the horizontal adjustment of the inner sleeve 9. In side the sleeve 9 is a stationary center point 11. Outside of, and rotating thereon, is a driving gear 19.. Gear 12 carries 'ear teeth out on the inner end thereof whic engages the teeth of the common drive gear 13, and on the outer face carries socket holes therein forming a combined gear and face plate, for means of driving the work mounted on the center point 11. Drive gear 13 is keyed to shaft l l which is mounted in the adjust able frame 6, and is driven by the drive pulley 15 keyed thereto. The pulley 15 is driven l O O CAD center on sleeve hearing 7. 0n t id the ad ustable Sit is arm 32, which is fir'nl by means of a power belt.

I the like gear 12 ner edge and engages the teeth 0 men tlllTQ gear 13, and the oute bined gear and face pate, with means driving the work mounted on the second? grinding spindle center t center end mounted wit bearing 7, is a hollou ad Sleeve carries gear teeth 0?.

i edge ano eng l oi the slidin llows permanent spindle sleeve 2. l3; l1. dis

engaging the te .1. i l is to the desirel os tion to lit the length 0 the work to he held betweei points on the lower spindle anu lock block 522 in place thus sleeve. Insir the sleeve 21 sliding sleeve 23 which carries a point 24h Sleeve also has in the edge and engage the teetl lease 25. Fastened to gear 26. Any movement downward will roclr. the release f center inner sleeve 23 with from it ie woilz, ant thus r .lcasi from betwee the center points. sleeve is a coil spring 2? whi against the sleeve casing causin tal pressure and holding" the against the worln ii and sliding therein, is t the coil spring 92?. Bid cap 29 and held firmly in Mounted on the adjustahl and directly above the a secondary adjustable hear I pivoted thereto and rocks uh ut the 3 lie frame 6 by a coil spring p both arms and connected t ing 5. Also in the adjusting micrometer aojusting screw a which will rock the hearing 7 and give an adjustment to ta upper center to bring it in true alinenieut with t e. lower grinding spindle, thus carin i taper in the worln the mieroinet. being heldin place by a ir'ict-ion ping and a coil spring undern r the top of hearing 31 and mounted there is an adjustable supporting sleeve l bottom ed ge of sleeve 86 carries gear teeth which enthe. teeth of the loclehlock 2'22. 3y pulling the block out. it releases the teeth in the sleeve 36 anu allows a horizontal adjustment of the t ce r for the upper spindle to fit desired o'l worl: to he held tor grinding. l" re' ning the block 22 to place the sleeve 36 is locked firmly in poi ion. ll ithin the sleeve is a sliding:

sleeve 3?, and carries within the eiu i or e are age r teeth ot 2 gear 39. Co.- necteu to gear 5) i. ll). A. movement downward o'l lever ll) will rotate gt *on e sleeve 37 horizcnnlly. thus from the to the point hollow 25 and and la, and held in against the bottom 0% the by means 4 t screws am an ado e6. adjustment the 3? ei'lrer gear can he pulled en :15 the springs, thus disenga the sleeves and allowin the sleeve to slide freely. inside of sleeve #37 is a coil spring and presses against the sleeve shoulder;

7 ins giving it a horizontal pressire 1' ldine the center 7011113 38 in the se Oi spindl iirinly against the work. Also within the sleeve 37 and sliding therein, is a pli :6 which supports the coil spring 45;. l7 $6 is driven in the cap 29 a: d held 1n pl: by hol 7 ll do wish to confine myself to the em a ct consrzuction as herein describe but merely give this as 'ireitcrred form oi construction.

flar ng fully descrioen my invention heroin what I claim my iDfYO'itiOll and desire to secure by Letters Eitents is: in a compound grinding head tor h oldand grinding two cylindr cal Illflelill'le rts at the same time in combination with e h rizontal table of a grind g machine and the rotatigig grinri thereon. a base fixedly at tached hlo, secondary hase sw'rele ne and can; ing I a at each end thereof a lower primal spindle mouz'lted therein, and means for "ding work thereon, solid adjusting flal'ie mounted on said hearing. and r/crg" about the same center. means for adjusting said trame r secondary spindle mounted on top of the at.- justable frame. and means for rotating the won: thereon.

2. In a device of the character in combination with the horizontal. 1

described table of secondary swiveled there to, a stationary bearing attached to each end of the upper base plate, a hollow sleeve bearing therein, a solid adjusting frame pivoted on said bearings, means for adjusting said frame, a sliding adjustable sleeve witl in the sleeve bearing, andv means for a horizontal adjustment oi same, a center point mounted in the end of the sliding sleeve, means for rotating the work thereon, a sliding adjustable sleeve mounted in the top oi: the adjustable frame for the secondary spindle, means for a horizontal adjustment. of said sleeve to hold same securely in position, a center point inside of said adjustable sleeve, means for rotating work thereon.

3. in a device of the character described in combination with the horizontal table of a grinding machine and the rotating grinding wheel. thereon, of a swiveled base securely attached to the horizontal table, a stationary hearing at each end of the base, a solid adjusting frame pivoted to the bearings, means for adjusting said frame, a sliding adjustable sleeve spindle with a stationary center point at the driven end. means for a horizontal adjustment oi same, a combination gear and face plate mounted on the hollow sleeve bearing and rotating thereon, and concentric with the lower adjustable sleeve and center point, means for driving said gear, and. means for driving the work about the center point from the socket face of the gear, a secondary stationary spindle mounted in the top of the adjustable frame, a combi nation gear and face plate rotating thereon and concentric therewith, means for driving said gear, and means for driving the work on the stationary center point from the socket face of the gear.

in a device of the character ceseribed in combination with the horizontal table 011? a grinding machine and the rotating grinding wheel thereon, of a compound swiveled base fixedly attached to the table, a stationary bcarin attached to each end of the base, a hollow sleeve bearing therein, a solic adjusting frame pivoted on said. bearings, means for adjusting said frame, a primary and a secondary spindle mounted therein at the driving end, a combination gear and. face plate rotating on each oi said spindles, a common d7; e gear enga ing the teeth of; the combination gears an L causing the rotation thereof, a driven shaft with pulley attached for said gears and securely attached thereto, said shaft being mounted on the outside of the adjusting frame so that the upward j ')1(5SSlllG of the drive belt will tend to reel; said frame about the center ot the lower spindle and hold the same in a solid and rigid position against the base, and means for driving said pulley.

in a device of the character described in comliiination with the horrzontal table of a grinding machine and the rotating grinding wheel thereon, of a compound swiveled base fixedly attached to the table, and carrying stationary hearings at each end, a solid adjusting frame pivoted thereon, means for adjusting said frame, a sliding adjustable support sleeve inside of the pivot hearing at the tail end, and to be extended from the bearing .ii'or the support of the tail center point, means for holding support sleeve in position. a secondary adjustable bearing mounted on top of the adjustable frame at the tail center end thereof, and pivoted about the center of the lower spindle, means for adjusting said secondary bearing, a sliding adjustable support sleeve mounted in the top of the secondary bearing, and means for adjusting said support sleeve.

(5. in a device of the character described in combination, with the horizontal table of a grinding machine and the rotating grinding wheel thereon, of a compound swiveled base fixedly attached to the table, with a stationary bearing attached to each end thereof, a hollow sleeve bearing therein, a solid adjustable frame pivoted on said bearings, means :t'or adjusting said frame, a secondary adjusting bearing mounted on the tail end of said adjusting frame, means for the ad justment of said bearing, a primary and a secondary tail spindle mounted therein, an adjustable supporting sleeve for each of said tail spindles, a lock block to engage the teeth of each of the support sleeves thus holding them securely in position.

7. In a device of the character described in combination with the horizontal table of a griniflingmachine and the rotating grinding wheel thereon, of a base fixedly attached to the table, a secondary base swiveled thereto with a stationary bearing attached to each end thereof, a hollow sleeve bearing therein, a solid adjusting frame pivoted on. said bearings, and means for adjusting said trame, a secondary adjustable bearing mounted. on the tail end of said adjustable frame with means for adjusting same, a supporting sleeve tor both the upper and lower tail spindles. means for adjusting and h ing' same. a hollow sliding spindle carr supporting sleeves. means for holding the spindles in place against the work, ahollow release ,tgear engaging the teeth on the edge or the spindle. means for rotating said gear,

a coil spring within said hollow gear to aling the tail center point within each of the if fixedly attached to each end o1 the base, a

hollow sleeve hearing therein,v :1 hollow 1djustable frame pii'oted on said bearings, means for adjusting said fi'zune a secondary adjustable hearing mounted Ont-he tail end of said adjustable frame with n'leans for adjustingg' same, a supporting sleeve for both the upper and lower tail spindles, a coil spring and a stationary supporting plug within the spindles to hold the center points firmly against the work, it supporting cup for holding said plugs in position against the springs. V

In testimony whereof I, 'THBTS B1111:- Xuun sign these specifications.

THEIS if. BERNARD.

Witnesses FREDERICK M. EI-IEHALT, MYRON J. DIKEMAN.

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