US1264928A - Device for feeding rolls for end-grinding. - Google Patents

Description

L R. HEI'M. I

DEVICE FOR FEEDING. ROLLS FOR END GRINDING. APPLICATION FILED JULY I3. 1917.

Patented May 7, I918.

l/VI/E/V TOR LEWIS R. HEIM, OF DANBURY, CONNECTICUT, ASSIGNOR TO THE BALL AND ROLLER BEARING COMPANY, OF DANBURY, CONNECTICUT, A CORPORATION OF CONNECTICUT.

DEVICE IIFOR FEEDING ROLLS FOR END-GRINDING.

menace.

Specification of Letters Patent.

. Patented May '7, T918.

Application filed July 13; 1917. Serial No. 180,459.

To all whom it may concern:

' Be it known that I, Lnwrs R. HEIM, a

citizen of the United States, residin at Danbury, county of Fairfield, State of ont necticut, have invented an Improvement in Devices for Feeding Rolls for End-Grinding, of which the following is a specification.

This invention relates to grinding mechanism, and has particular reference to means whereby large numbers of small articles such as bolts, pins, bearing rollers, etc., may be accurately ground on one or both ends, or may be circumferentially ground, with a minimum amount of handling. With this invention, the ends of bearin rollers may be simultaneously ground so t atthe rollers will be of uniform length, or headed articles such asbolts may be ground on both ends to' so be of uniform length or the head itself may be ground of uni-form length, as may be desired. 'Numerous "other uses for such a mechanism are apparent without specific mention, and a preferred form of the invention will be described herein.

'The invention comprises a magazine carrier which may be loaded byhand or automatically, and disposed adjacent one or more grinding wheels so as to successively carry projecting portions of the articles to be ound across the grinding surface or sur aces. As shown herein, the mechanism comprises tw grinding wheels with the car? rier dispose between and mechanically driven so as to simultaneously grind oppd site ends of rollers for roller bearings, ut the invention contemplates the substitution of a stationar guide for one wheel in a case where it is on y desired to grind one end of the article, and in some instances, as in the case of headed articles which are to be ound on the head, the carrier itself per- Tdrms the functions of a guide.

In the accompanying drawings,

Figure 1 is an end elevation showing the complete assembly Fig. 2 is a top plan, v Fig. 3 is an end view seen from the left inFig. 1,

Fig. 4 is an elevation on an enlarged scale,

Fig. 6 is a detail view showing the manner of loading the carrier by hand.

an 1 represents the base provided with a 'the carrier will feed the blanks [properlg' to Fi 5 is a section onthe line 5-5 of Fig.

g I blanks substantially 1n line withthe grindstock-2 at each end, each stock carrying a shaft 3 and rinding wheel 4. The stocks 2 are 1ndepen ently adjustable so as to vary the d1stance between the grinding wheels 4. As herein shown, the grinding wheels 4 have the grmding surfaces on the side, but the invention is equally applicable to peripheral grinding wheels. The grinding wheels 4 are ad usted and driven in any desired manher not necessary to be shown herein.

The base 1 is provided with an upright standard 6 to which is bolted a bracket 7 The bracket 7 carries a shaft 8 on which is rotatably mounted a carrier disk 9 having holes or pockets 10 to receive the rollers 11, '70 or bolts, or other articles as the case may be, and also having gear teeth 12 which mesh wlth the inion 13 mounted on shaft 14 ournaled in the bracket 7 and driven by pulley 15. Mounted on the upper side of the bracket 7 above the shaft 8 and closely adjacent to the grinding wheels 4 are guide, plates 16, having outwardly curved edges at-the entrance side as shown in Figs. 2 and 4. The guide plates 16'are separated by a so spacing piece 18, a distance apart] corresponding to the length or thickness of the rough blanks, and the flared or outwardly curved edges of the guide plate provide a rearwardly tapering entrance to the guide afforded by said guide plates ,and thusserve to position the blanks in the carrier so that the grinding wheels. Where si e grin ing wheels are used, it' is desirable to accurately to position the. blanks so that only their ends or projecting portions will come in contact with the grinding wheels. If peripheral grinding wheels beused, it will be understood that the carrier shaft 8 will be normal at or nearly so to the axes of the grinding wheels, instead of parallel thereto, as shown hereln.

The operation will be readily understood from the drawings in view of the foregoing ice description, it being understood that the Y grinding wheels rotate counter-clockwise, and the carrier rotates clockwise. The operator places the blanks in the magazine carrier before they enter the flared guide, not and the action of the guide is to position the ing faces of the wheels. Owing to the difference of speed and direction of movement of the carrier and the grinding wheels, the

slower moving carrier provides the requisite resistance to accomplish the grinding. Where both ends of the blanks are being simultaneously ground, it will be seen that one wheel backs up the other, but where only one ished length of the blanksso that the blanks can revolve in the carrier in the usual manner. The wheels can revolve in the same direction, or oppositely at different speeds, as in my Patent 1,210,937, J an -2, 1917, in which case the slower moving wheel acts as .a regulating wheel.

,This invention can be made in the form of an attachment which can readily be adapted to existing grinding machines and thereby increasing the capacity thereof and enabling large quantities of small articles to be ground to uniform lengths. Various modifications may be made in the structure herein illustrated without departing from the scope of the appended claims.

What is claimed, is:

1. The combination with a grinding Wheel, of a rotating carrier provided with holes or pockets to receive the blanks to be ground, and a guide arranged adjacent sald grinding wheel and havingan outwardly flaring or rearwardly tapering entrance so that said guide will position said blank relative to said grinding wheel.

2. The combination with agrinding Wheel,

of a rotating carrier provided with holes or pockets to receive the blanks to be ground and having a geared periphery, a rotating pinion meshing with the said geared periphery of said carrier, and means for positioning the blanks inserted in said carrier before they reach said grindingwheel.

3. A grinding machine attachment comprising a suitable base, a support or standard separate from said base but attached thereto, a bracket separate from said standard but rigidly secured thereto, a rotating carrier mounted in said bracketand having holes or pockets to receive the articles to be ground, and means, also mounted on said bracket, for rotating said carrier.

4. A grinding machine attachment comprising a suitable base, a support or standard separate from said base but attached thereto, a bracket separate from said standard but rigidly secured thereto, a rotating carrier mounted in said bracket and having holes or pockets to receive the articles to be ground, said carrier having a geared periphery, a shaft also mounted on said bracket and provided with a pulley, and a pinion on said shaft for rotating said carrier.

5. A grinding machine attachment comprising a suitable support or standard, a bracket attached to said support or standard, a rotating carrier mounted in said bracket and having holes or ockets to receive the blanks to be groun means also mounted in said bracket for rotating said carrier, and guiding means, also mounted in said bracket, for positioning the blanks inserted in said carrier before they reach the grinding wheel or wheels of the grinding machine.

In testimony whereof I afiix my signature.

LEWIS R. HEIM.

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