US965776A - Machine for grinding rollers. - Google Patents

Description

G, -WEEKS. 4 MAOHINE For: gnmnme ROLLERS. I APPLICATION FILED JAN. 4, 1910.

WIT/V5851: Q' f/WEWEQR.

min-95d; July26,1910.

vice or member; Fig. 2 is an end view of the arren smarter-ear orbs.

GEORGE WEEKS, 0 CHELMSFORD. ENGLAND. ASSIGNOR TO THE HOFFMALNN' MANU- PAC/TUBING COMPANY LIMITED, OF LONDON, ENGLAND.

MACHINE FOR GRINDING ROLLERS.

Specification of Letters Patent.

Patented July 26, 1910.

Application filed January 4, 1910. Serial No. 536,259.

To all whom it may concern:

Be it known that l, GEORGE Venus, a subject of His Majesty the King oi Great Britain, residing at Chelmsford, Essex, England, have invented a certain new and useful Improvement in Machines for Grind ing Rollers, of which the following is a specification.

This invention relates to an improvement in machines for grinding rollers particularly com 'iaratively small rollers such as are used for roller bearings.

According to the invention rollers a re ground and finished between members or disks, preferably a fixed member (of iron and a.mo able one or disk (of abrasive material) one of such members having a groove or grooves formed therein for holding such rollers or roller blanks in such a manner that they may have a t "avcling rolling movement therein in part for the purpose of enabling them to be changed end for end as hereinafter described in relation to the groove or grooves it desired and in part to enable them to travel easily through the groove and also to be best ground or abraded tor which purpose the holding member presents onl vone face of the roller to the grind ing mcmber as is done in ball grinding with this-class of machine. The machine by'the traveling rolling movement of the rollers is alone distinguished from machines for grinding rollers in which the rollers have a traicling axial movement in their holding device apart from other 'l'undamental dili'erences between them. The machine is preterably -l'ur't'her provided with a device or dcvices adapted to guide and transfer the rollers from groove to groove or from an exit to an entrance end of the same groove and at; the same time if desired reverse the end for end positions of said rollers relative to the groove or grooves'of the holding member. In practice it is found that. the use of the end reversing device described above, prevents to a la rge extent, uneven grinding of the aol-lcrs.

To enable the invention to be fully understood it will now be described with reference to the accompanying drawings, in which is illustrated a portion of a machine sutlicicnt to show an example of same.

Figure is a face view of the holding deafter leaving the ex holding member and grinding member or disk; and Fig. 3 is a plan of Fig. 2 at right angles to same.

in these drawings 1 is a fixed disk on which the holding device 2 (one only being shown) is mounted, and 3 is the grinding or abrading mcn'iber or disk, the fixed disk being shown as supported by a shaft 4 and the grinding disk by a shaft 5 which latter is capable of being rotated as by a suitable pulley. The holding device in the form shown is straight, and consists of two bracket shaped bars 6, 7 the bases of which are let into the disk 1 while their flanges oppose one another with a space between, which flanges guide and through which space can travel and rotate at right angles to the flanges the rollers 8 to be ground, for which purpose the depth of the flanges is such that a portion of the faces of the v rollers ca 11, pro ect therefrom.

The holding device is arranged as shown to form a chord in respect oi. the face of the abrading disk as has been before proposed for roller holding dcvicesin other forms of machines. In the form actually shown although afixed disk -1 is illustrated it will be obvious that it is acting onlyvas a support for a straight holder .2 applied to the face of'same, and which holder could be otherwise carried,

To each end of the holding device inconnccted the ends of a. transfer device or chute 9 so that an endless passa i f d ith t groove of e holder. This chute 9 has a half-turn formed in it at 10 (Fig. 3) so thattherollers are reversed end for end du ing their travel t. rough same so that end of the grooved holder/6 they are presented again toit the other 'wa "up nt the entrance end.

.It -wil be seen that the rotation of the grinding disk a a-inst the faces of the rollers will not .on y grind same but will traverse them through the grooved holder 6 with a rolling motlon, the abrasive action being greatest toward the outer edges of the disk while the rolling action is way between these points. i What I claim is 1. A machine for grinding rollers, com: prising in combinationan abrading member having a plain surface, a holding member angleslongitudinally of the groove so t at midi -having'a groove to hold the rollers at ri ht they have a traveling rolling movement therein, and whereby they are prevented from twisting, and to present them in a straight line to the abrading member, and means for moving one of the members.

2. A machine for grinding rollers comprising in combination a holding member having a groove to hold the rollers so that they have a traveling rolling movement therein, an abrading member to which they are presented by such holding member,

1 means for changing the end for end positions of the rollers relative to the groove,

- and means for moving one of the members.

3. A machine for grinding rollers comprising in combination an abrading member, a holding'member provided with a straight groove arranged to form a chord in respect of the face of the abrading disk, and to hold the rollers so that they have a traveling rolling movement therein, and means for moving one of the members. i

4. A machine for grinding rollers coinprising ll combination an abrading member having a plain surface, a holding member having a groove to hold the rollers so that they have a traveling rolling movement therein and to present them to the abrading member, a transferring device to transfer the rollers from the exit to the entrance of 30 a groove and means for moving one of the members. 7

In testimony whereof I have hereunto set my hand in the presence of two snbscrdnng w1tnesses.

GEORGE WEEKS;

\Vitnesses G. F. BARRETT, C. A. BARRETT.

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