US1026022A

US1026022A - Grinding-machine.

Info

Publication number: US1026022A
Application number: US65795311A
Authority: US
Inventors: William F Cremean
Original assignee: Individual
Current assignee: Individual
Priority date: 1911-11-01
Filing date: 1911-11-01
Publication date: 1912-05-14
Anticipated expiration: 1929-05-14

Description

W. P. GREMEAN.

GRINDING MACHINE.

APPLICATION TILED NOV. 1, 1911.

1,026,022. Patented May 14, 1912.

' 3 SHEETS-SHEET 1.

[NVENTOR.-

A TTORNEY.

W. F. OREMEAN.

, GRINDING MACHINE. APPLICATION FILED NOV. 1, 1911. 1,026,()22 Patented May 14,\1912.

3 SHEETS-SHEET 2.

WITNESSES: VENTOR.

ATTORNEY.

W. F. GREMEAN. GRINDING MACHINE.

APPLICATION FILED NOV. 1, 1911.

Patented May 14, 1912.

3 SHEETS-SHEET 3 A TTORNEiL UNITED STATES PATENT OFFICE.

WILLIAM F. CREMEAN, OF LOGAN, OI HIO.

GRINDING-MACHINE.

Specification of Letters Patent.

Patented May 14, 1912.

Application filed November 1, 1911. Serial No. 657,953;

To all whom it may concern:

Be it known that I, WILLIAM F. CREMEAN,

'a citizen of the United States, residing at.

Logan, in the county of Hocking and State 1 of Ohio, have invented certain new and useful Improvements in Grinding-Machines, of which the following is a specification.

- My invention'relates to improvements in that class of portable grinders which'may be fixed to the shaft or member which is to be ground, or to adjoining portions of the structure of which it is a part.

The object of my improvements is to provide a new and useful'portable grinding machine which may be easily transported and quickly mounted upon the part to be ground without other support than the part to be ground or the adjacent structure of which it is a member.

I attain this object by the mechanism illustrated in .the accompanying drawings in which.' I

.- Figure 1 is a longitudinal section through the machine mounted upon a.,car "axle, for

I view of ring 7. a

grinding the journal. 2 is an end view of the machine shown in Fig 1. Fig. 3 is a section online a a of Fig. 2. Fig. 4 is a section on line b b of Fig. 2. Fig. 5is' a section on line a c'of Fig. 2." Fig. 6 is a section on line (Z d of Fig. 2. Fig. I

shows a modification of my machine, for i mounting upon a shaft at a distance from its end, and shows further an arrangement for motor drive. Fig. 8 shows a detail of the clamping device for the stationary frame shown in. Fig. 6. Fig. 9 is an end In Figs. 1 and 2the machine is shown fixed to a car axle and wheel for the purpose of, grinding the axle journal which may have become worn or-roughened in service or have been left unfinished by the lathe in which it "was turned. The machineis equally adapted to be attached to other forms of shafts or cylindrical machine parts, as is shown in Fig. 7.

' Advantages of this. machine are that its use obviates the necessity of sending a rough axle or shaft to a machine shop to be trued up, and saves in both expense and time in the repairing of axles or. other cylindrical parts which have become unfit for service. Further advantages lie in the ease with j which the machine maybe transported, and

mounted upon large or unwieldy shafts or machine parts which would otherwise have to be handled and ground by large and expensive grinding apparatus. 7

In the drawings 1 represents a car axle, and 2 is a car wheelmounted upon it.

3 and 4 are gears which are securely fastened together in alinementand fixed relative position by the shouldered rivets 5-5,

for the-gear 3, and an inwardly projecting flange 10 which presses the wedges 6-6 into place. Ring 7 has an outwardly projecting flange 11 which forms the other retaining shoulder for gear 3. Both rings 7 and 8 are bored somewhat larger than the nominal diameter of the axle upon which they are mounted, to accommodate slight variation's in size, the use of the wedges 66 permitting such an arrangement.

On the outer end of the journal which is to be trued is placed the sleeve 12 which is provided with a trunnion-like extension13. The -outer surface of the sleeve 12 forms a bearing on which revolves the gear 4. A

retaining flange 14 projects from sleeve 12. Projecting axlally through. and closely centered with the trunnion 13 of sleeve 12 is a pin 15, formed at one end into a lathe center for the purpose of entering the countersunk hole in the center of 'the end of. the axle.

16 is a tripod-like stationary frame provided with inwardly projecting feet 17, and cam clamps 18. In the leg 19, of tripod 16 are the bearings 2021 for drive shaft 22.

. Keyed to driveshaft 22 are pinions and large gear 25 which as shown is utlllzed as a crank disk for hand crank. 26, when hand power is applied to drive the machine. When assembled for operation, pinions 2324 mesh with and drivegears 3-4. The

leg 19 of the tripod 16 is forked at the bearing 21 and joins the other two legs 27'- 28, on either side of the center in such a way as to clear gear 25 and other parts of the mechanism. The legs 27-28 of the tripod join in a hub at 29 which is threaded internall fifor the centering pin 15. 30 is a retaining washer for gear 4.

Upon the trunnion 13 of sleeve 12 runs freely the wide faced intermediate gear 31, driven by gear 25. Gear 31 drives gear 32, through the idler gear 33. Gear 32 is keyed tc. the driven shaft 34 which carries the abrasive wheel 35 and drives it by means 43. The brackets 3839--when adjusted so that wheel 35 grinds the diameter desired are secured in position by the clamping bolt 44 and nut 45. Tube 44. is a spacer for gears 3 and 4 to resist the clamping force of,the bolt 44. To permit such adjustment the webs or spokes of gears 34, which form the end walls of the revoluble frame are slotted at 46474849. The abrasive wheel 35, being mounted upon the shaft 34 which has its bearings in the revoluble frame is made to rotate about the part being ground bythe pinions 23-24 driving the gears 34. I

For the purpose of causing the abrasive wheel to travel longitudinally along the part "to be ground, I provide a feeding mechanism as follows,'Extending longitudinally through gears 34' and having hearings in the spokes or webs thereof is a shaft 50. This shaft is threaded throughout its portion which lies between thegears 3--4 and carries upon it .anut 51, which has laterally extending arms 5253, which span the wheel 35. Keyed to shaft 50 is a star wheel 54, which is made to rotate in either direction, according to whether striking pin 55 is placed in hole 56'or 57 .in' the tripod leg 28. "The rotation of shaft 50 propelsnut 51 upon it and the arms 5253 feed .the abrasive wheel 35 axially parallel to the member being ground. Gears'3 and 4 are recessed at 3 and 4 to permit the wheel 35 to have full travel. 1

In Fig. 7 there is shown an arrangement for connecting the machine to a motor by means of belt pulley 58 mounted. upon shaft 22. In this figure the machine is shown mounted upon a shaft at a distance from the end. For this adaptation of my invention, the centering pin 15 and sleeve 12 of Fig. 1 are not used but there" are employed for mounting gear .4, sleeves 8*, 12 and wedges 6 -6 which are used in the same manner relative to gear 4, as the correspondto the projecting portions of the shaft being ground. This modification is shown in Figs. 7 and 8 by the legs 16 16 which are clamped to the shaft to be ground, l by the

bar

59, 59* and the bolts 60-61, etc.

Other modifications of my invention may be made to adapt it to the specific work to be performed without material modification of its functions or the means employed to perform them, as will be apparent to those skilled in the art.

To attach and operate my machine, as shown in Figs. 1 and 2, the ring 7 is first slipped over the journal. to be ground and the Wedges 66 which may be three or more in number are slipped into their slots. Gear 3 is next slipped over the end of the journal followed by ring 8. Gear 4 follows with sleeve 12, washer 30, and wide faced gear 31. Gear 3 is now slipped upon its bearing on ring 8 and the latter screwed on to ring.7, at the same time tightening the wedges 6-6.

'Sleeve 12 which carries gear 4 follows by sliding on to the end of the journal. The stationary tripod frame carrying the driving gears 232425 is now dropped into place and the centering pin 15, having a threaded portion connecting it to the hub of. the tripod. frame, is inserted into the countersunk hole in the end of the axle. The gearing being brought to proper adjustment, the stationary frame 16 is clamped to the wheel by means of the clamps 18 1818. The adjustment of .the stationary frame'is facilitated by means of set screws suclfas 62-6364r65. The bearings for the shaft of the abrasive wheel 35 are now adjusted so that the wheel will grind the proper amount, the star wheel striker set so 1 as to feed the wheel 35 in the proper direction and the operation of grinding performed by rotating the gear 25. To reverse the longitudinal feed of the grinding wheel the striker pin 55 is removed from one of the

holes

56 or 57 and placed in the other.

The attachment and operation of my invention as shown in modified form in Figs. 7 and 8, are clearly shown in the drawings.

What I claim and desire to'secure by Letters Patent is 1. In a .grinding machine the combination of a revoluble frame, a shaft having bearings therein and bodily revoluble therewith,- an abrasive wheel carried by the shaft, 'ineans for rotating said wheelon its axis while bodily rotating with the frame, and a feeding mechanism for the abrasive wheel mounted in the revoluble frame.

2. In a grinding machine the combination of a revoluble'frame, a shaft having bearings therein, an abrasive wheel carried by the shaft, a feeding mechanism for the abrasive wheel mounted in the revoluble frame,

means for rotating the revoluble frame,

means for rotating the abrasive wheel on its axis while bodily rotating with the revoluble frame, and means for operating the" wheel while bodily revolving with said frame, a feeding-mechanism for the abrasive wheel mounted in the revoluble frame, bearings for the revoluble frame and means for mounting them upon the shaft to be ground.

4. In a grinding machine the combination of a revoluble frame, a shaft having bearings therein, an abrasive wheel carried by the shaft, feeding mechanism for the abrasive wheel mounted in the revoluble frame, bearings for the revoluble frame, means for mounting said bearings upon the shaft to be ground, means for rotating the revoluble frame, means for rotating the abrasive wheel on its own axis while bodily rotating with said frame, and means for operating the feeding mechanism; f

5. In a grinding machine, the combination of a revoluble frame, a shaft having bearings therein, an abrasive wheel carried by the shaft,;a feeding mechanism for the abrasive wheel mountesin the revoluble frame, bearings for'the uble frame, means for mounting said bearings upon the shaft to be ground, a station'ary frame, a drive shaft having bearings therein, and separate driving connections between the drive shaft and the revoluble-frame and between the drive shaft; and 'the shaft carrying the abrasive Wheel whereby the abrasive wheel will be rotated on its own axis and bodily fed sidewise while bodily rotating about the shaft being ground.

6. In a grinding machine, the combination of a' revoluble frame, a shaft having bearings therein, an abrasive wheel carried by the shaft, feeding mechanism for the abrasive wheel mounted in the revoluble frame, bearings for the revoluble frame, means for mounting them upon the shaft tobe groimd, a stationary frame, independent means for mounting it upon the shaft to be ground, a drive shaft having bearings in the stationary frame, and separate drivlng connections between the drive shaft and the revoluble frame and between the drive shaft and the shaft carrying the'abrasive wheel, whereby the abrasive wheel will be rotated on its own axis and bodily fed sidewis'e while bodily rotating about the shaft being-ground.

7. In a. grinding machine the combination of a revolubleframe and a stationary frame,

the revoluble frame being carried by two 'se arated bearings secured to and alined wlth the shaft to be ground, said revolving frame embodying two 'large gear wheels journaled respectively on said bearings.

, 8. In a grinding machine, the combination of a revoluble frame and a stationary frame, the revoluble frame being carried by two separated bearings secured directly to and alined with the shaft to be (ground and'the stationaryframe being in ependently secured to the shaft to be ground or the structure of which it is a member.

9. In a grinding machine, the combination of a revoluble frame and a stationary frame, the revoluble frame carrying the bearings for the shaft of the abrasive wheel and its feeding mechanism, 4 and being revoluble upon bearings co-axially mounted directly upon the shaft to be ground at opposite ends of the surface to be ground;

'10. In a grinding machine the combina-' tion of a revoluble frame and a stationary frame, the revoluble frame carrying the bearings for the shaft of the abrasive wheel and its feeding mechanism and being revoluble upon separated bearings co-axially mounted directly upon the shaft to be ground at opposite ends of the surface to be ground, the stationary frame carrying the:

bearings for the drive shaft for the revolu- .11. In a grinding machine the combination of a revoluble frame, a shaft having bearings therein, an abrasive wheel carried by the shaft, a feeding mechanism for the a rasive wheel mounted in the revoluble frame, a stationary frame, a drive shaft hav \ing bearings therein and means independentof the stationary frame for, mounting the revoluble frame co-axiall and directly and wholly upon the shaft to e ground.

12. In a grinding machine the combination of a revoluble frame and a stationary frame and independent means for mounting them upon the shaft to be ground, the revoluble frame embodying a pair of large gear wheels journaled in bearlngs mounted directly on the shaft to be ground.

13. In a grindingmachine. the combination of a stationary frame carrying the driving members,-a revoluble frame carry-- ing the driven members, means for mounting the revoluble frame directly upon the shaft to be ground, and independent means with a revoluble frame embodying a pain for securing the stationary frame to the of large gear wheels journaled on bearings directly mounted on the shaft to be ground, these wheels being in mesh with the aforesaid pinions, a shaft journaled in the revo-' uble frame and carrying an abrasive wheel, means operated from the. aforesaid large driving gear for rotating said wheel while' bodily rotating, and means for automatically feeding said wheel laterally during its the shaft and rotated by a key in the spline but free to move longitudinally, means for feeding the abrasive wheel longitudinally,

means for revolving it upon its axis and means for causing the abrasive wheel to rotate about the shaft being ground.

, 16. In a grinding machine, an abrasive wheel, a shaft therefor, a revoluble frame, adjustable bearings for said shaft in said frame, bearings for the revoluble frame, means for mounting said bearings co-axially upon the shaft to be ground, separate means for rotating the abrasive wheel upon its axis, for revolving it about the shaft being ground and for feeding it longitudinally.

. 17. In a inding machine, anflabrasive wheel, a splined shaft therefor, sliding key connections between the shaft and the hub of the abrasive wheel, a revoluble frame consisting of a pair of gears held in axial "alinement, and bearings for said shaft carried by said revoluble f'rame.

18. In a grinding machine the combination of an abrasive wheel, a splined shaft therefor, sliding key connections between the shaft and the hub of the abrasive wheel, a gear keyed to said shaft, a revoluble frame consisting of a pair of gears held in axial alinement, bearings for the splined. shaft carried by the revoluble frame, a

feeding mechanism for the abrasive wheel carried by the revoluble frame, bearings fer the revoluble frame adapted to be mountedvupon the shaft to be ground in coaxial alinement therewith, a stationary ,frame, means for operating the feeding mechanism, and means for imparting motion to the'drive shaft.

19. In a machine for grinding shafts, a stationarily mounted frame, an independent frame journaled on bearings directly mounted on the shaft to be ground, said bearings being located at opposite ends of the surface to be ground, a rotatable shaft journaled in said rotatable frame and carrying a laterally movable abrasive wheel, mechanism mounted on said stationary frame for simultaneously revolving the rotatable frame and the shaft carrying the abrasive wheel, and means for automatically shifting the abrasive wheel laterally on its shaft during its planetary movement.

20. In a grinding machine, the combination of an abrasive wheel, a stationary frame carrying a driving member, a revoluble frame carrying driven members, means for mounting the revoluble frame upon the shaft to be ground in alinement therewith, separate means for securing the stationary frame to the shaft to be ground or the structure of which it is a member in alinement with the shaft to be ground, means for imparting motion to the driving member, driving connections between the driving and driven members, means for feeding the abrasive wheel longitudinally, and means for varying its lateral position relative to the shaft being ground.

In testimony'whereof I have affixed my signature in presence of two witnesses.

WILLIAM F. CREMEAN. Witnesses:

C. A. MATHIAS, H. M. CHASE.