US1713678A

US1713678A - Stock guiding and feeding mechanism

Info

Publication number: US1713678A
Application number: US106709A
Authority: US
Inventors: Frank T Seibert
Original assignee: Jones and Laughlin Steel Corp
Current assignee: Jones and Laughlin Steel Corp
Priority date: 1926-05-04
Filing date: 1926-05-04
Publication date: 1929-05-21
Anticipated expiration: 1946-05-21

Description

May 21, 1929. F. T. sElBERT STOCK GU'IDING AND FEEDING MECHANISM 2 Sheets-Sheet Fled May 4, 1926 May 2; 1929. F. T. sx-:IBER-r "STOCK GUIDING AND FEEDING MECHANISM Filed May 4, 1926 2 Smets-sheet 2 Patented May 21, 1929.

UNiTED STATES 'PATENT OFFICE.

FRANK T. SEIBERT, 0F INGOMAR, PENNSYLVANIA, ASSIGNOR 'IO JONES & LAUGHLIN STEEL CORPORATION, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF* PENNSYLVANIA.

STOCK GUIDING AND FEEDING MEGHANISM.

Application led May 4,

The present invention relates to stock feeding mechanism or steady rests for metal working machines, and the invention aims generally to improve mechanisms for feeding and guiding the stock in various metal working machines where it isV desirable to present a longitudinally moving and rotating cylindrical piece of work, such as shafting, to a finishing tool, as for instance a grinding and polishing wheel `or the like, as shown and described in my copending application filed simultaneously herewith, Serial No. 106,710 filed May 4, 1926.

Further aims and advantages appear hereinafter in connection with the description of the embodiment of my invention selected for illustrative purposes and shown in the accompanying drawings, wherein Fig. 1 is an elevation of a steady rest for a shafting grinding machine constructed in accordance with the'present invention, parts thereof being shown in section better to show the construction; A

Fig. 2 is a plan view thereof partly in section;

Fig. 3 is a vertical sectional view taken on the line 3-3 of Fig. 1; and

Figs. 4 and 5 are a detail end view and side elevation, respectively of one of theV bearing blocks, showing the helical rib thereon adapted for engagement in agroove in the guide ways, and indicating the extent of angular twist dueto changes in adjustment to suit different diameters of stock.

In the embodiment of the invention illustrated in the drawings, the base 10 supports a housing oi' support 11, preferably annular in shape, which is formed with radial pockets for guide ways 12. As shown in Fig. 1, the sides of the housing are preferably open at the centers to permit movement of the worlr 13 transversely therethrough.

For the purpose of guiding or feeding the work longitudinally, and simultaneously rotating it, I provide a plurality of rolls 14 journaled upon spindles 15 mounted in bearing blocks 16 which are slidably mounted within the housing 11 soas to be capable of movement radially in the guide ways 12. In the arrangement illustrated in the drawings, three rolls 14 are provided,`which are equidistantly spaced around the 'axis of the 1926. Serial N0. 106,709.

work. Preferably the upper roll is resiliently mounted so as to permit yielding of the roll due to slight irregularities in the work. In the embodiment of the invention shown in the drawings, the bearing block 16 of the upper roll is counter-bored to form an internal annular flange 17 adapted to engage over and be supported by an outwardly extending fiange 18 on a thimble 19. A spring 20 is positioned within the bore of the upper portion of the bearing block, and surrounding the thimble 19, and is held undei` compression against the flange 17 by means of a nut 21 threaded upon the thimble, thereby resiliently pressing the assembled bearing block 16 and roll 14 inwardly and downwardly.

The assembled roll units are each supported adjustably within the guide ways 12 by means of shafts 22 each of which is secured at one end to the thimbile 19, in the case of the upper roll or to the bearing block 16,k in the case of the two lower rolls, by a pin 23 or other suitable means. At the opposite end of each, these shafts are threaded to cooperate with threaded sleeves 24-,which are suitably supported in the peripheral wall of the housing 11 to permit rotation, preferably in unison, whereby rotation of the threaded sleeves 24 will effect siinultaneous movement of the shafts radial y.

For the purpose of simultaneously adjusting each of the rolls radially in the guide ways 12, I preferably secure to each of the sleeves 24 a pinion 25 adapted to meshr with a single ring gear 26 mounted to rotate in the peripheral wall of the housing 11. Suitable means is provided for rotating the ring gear 26, as for instance an adjusting .pinion 27 secured upon a stub shaft 28 supported by the housing 11. The ring gear is preferably provided with a scale 29 adapted to cooperate with a pointer 34 to indicate the radial adjustments of the rolls (see Fig. 2). Preferably the scale 29 is so graduated as to indioatethe diameters of the shafts for which the rolls are adjusted.

IfvThen the invention is embodied in a driven steady rest for the purpose of feeding the cylindrical work longitudinally, the angularly disposed rolls 14 are driven in anv suitable mfanner, as by shafts 30, so as simultayio neou'sly to rotate and feed the work longitudinally. Reference is made to my application Ser. No. 106,710 iiled May Li, 1926, referred to above, wherein means for rotating the Vrolls I vare illustrated.

,ing to the embodiment of the invention showngin the. drawings, the bearing blocks and theguidefways l2 are formed withcooperatinglielically arranged guides forthe purpose ofitwisting the bearing blocks to `change the angular adjustment of the rolls when adjusted radially. As shown, a Vmember 3l is securely attached to each side of thefbearing block rl, said member ybeing formed with a ,helical Vrib 32 adapted Vto slide in a corresponding groove 33 in the adjacent guide plate A12. Thus it is obvious Vthat as the rolls la (see Fig. 3) are adjusted Y Y radially outward; toaccommodate work of largeiwclianietei's, the angular position or Obliquity ofthe rolls with, reference to the shaft will be decreased and vice versa! (see Figs. 4t and 5). In Fig. 4 the linesA B and Af B indicate the relativel'angularity of the aXes' of the rolls to the axis of the stock X-X for two pieces of stock of different diameter, the setting for ,the larger being i indicated by the lines A B and the smaller by A B, the corresponding positions of the rolls being shown indotted lines. By reason of lthis construction, with the machine illustrated it ispossible to feedcylindrical objects,

j such as shafts, of a, wide range ofl sizes, as for instance from 1% inches to 6 inches in l diameter, at Asubstantially the same rate and `the same speed of rotation' A Advantages of the invention are its sim-- plicity construction, compactness of larrangementof parts, and ease with which the rolls` may be adjusted to work of different diameters. Furthermore by the simpleand single adjustment; of the rolls for the diameter of the work, the accurate angular adjustment ofthe rolls is simultaneously effect. 4ed automatically, whereby to feed the work at substantially the same linear speed.

Obviously. my invention is not to be restricted to the details shown and described.

What Ijclaim as ,new is:

1. Mechanism for feeding and` i rotating lcylindrical work to a metal working ma- V chine comprising a support .having radial guideways, roll assemblies mounted in said guideways, means for adjustingthe roll assemblies radially to accommodate work of different diameters, said guideways and assemblies being formed with voppositely dis- V k posed mating helical members whereby the angular position ,of the roll is'changed with reference to the axis of the work simultaneously and in accordance with the radial Vjournaled in said bearing members, meansV for driving said rolls, means for adjusting said bearing members' and driven rolls radially to accommodate work of different diameters, said guideways and bearing members kbeing formed with'oppos'itely vdisposed mating helical members for changing the angular position of the roll `with reference to the `axis of the shaft simultaneously and' in accordance with the radial adjustment of the roll, and a single means rotatably supported upon saidhousing'an'd having engagement with each of the adjusting means forthe bearinginembers whereby :said bearing memk bers may be simultaneously` uniformly ad` justed to accommodate work of different diameters.' 3, 4Mechanism forlongitudinally feeding and rotating cylindrical work to 'a metal working machine vcomprising a housing having l, radial guideways,vbearing members mounted in said ways, power driven rolls carriedby said bearing members andl means foradjusting said bearingimembers radially, in said ways comprising threaded shafts each secured at one end toa corresponding bearing member, rotatable means mounted in said housing Vand having threadedV engagement withA each of said shafts, and common means for rotating all of said'rotatable means whereby Aeach of thel rolls is simultaneously adjusted radially within the housing, said bearing'members and guideways being vformed with oppositely dis-l posed mating helical members for changing the angular position ofthe rolls with reference tothe axis ofthe work simultaneously and Vinv accordance with theradial adjustments of the rolls. f Y 4. In a feeding device for a shaft grind? iiigmachine of the character described, sets of `feed rolls disposed in the same transverse plane and surrounding the axis ofthe shaft,

means forrotating 'saidzfeedrolls at the same .speedfrom a common source, vjournals for said feed rolls, said journals being rotatably mounted in alining bearings on Vbrackets carried by slides radially movable'in fixed guides extending towards the axis of said shaft from a plurality ofdirectio'ns, said slides and guides being formed with oppositely Adisposed vmating helical ribs and grooves forgiving a twist to said brackets as they are adjusted radially toward or from said shaft, and screw means on said brackets for adjusting said brackets and feed rolls toward or Vfrom Vsaid shaft andV securing them in adjusted position.

5. In a feeding device for a shaft grinding machine of the character described, sets of feed rolls disposed in the same transverse plane and surrounding the axis of the shaft, means for rotating` said feed rolls at the same speed from a common source, journals for said feed rolls, said journals being rotatably mounted in alining bearings on brackets carried by slides radiallymovable in fixed guides extending towards the axis of said shaft from a plurality of directions, said slides and guides being formed with oppo sitely disposed mating helical ribs and grooves for giving a twist to said brackets as they are adjusted radially toward or from said shaft, and screw means on said brackets for adjusting said bracket-s and feed rolls toward or from said shaft and securing them in adjusted position, said screw adjusting means comprising a common operating means providing individual radial and angular adjustment of said brackets and rolls simultaneously;

In testimony whereof, I have signed my name to this specification.

FRANK T. SEIBERT.