Патент USA US2390914код для вставки
Dec. 11, 1945. I s. BARRERA I 2,390,914 ' RADII TOOL AND DRESSER Filed June 20, 1944 A w ‘ ~ I ‘2/ m \\ \ gill! #1 . - M ‘ - 2 2.9 B *' _ ' 3 ?aivaz’are .Dfarrera ‘ 2' www'gm Patented Dec. 11, 1945 2,390,914 ' UNITED STATES PATENT OFFICE 2,390,914 RADII TOOL AND DRESSER Salvatore Barrera, Brooklyn, N. Y. Application June 20, 1944, Serial No. 541,203 6 Claims. (01. 82—11) I This invention relates to radii tool holders for machine tools such as lathes, planers and the like, and more particularly to a radii dresser. An object of the present invention is to provide a radii dresser capable of adjustment with great re?nement and precision. A further object of the invention is to provide which it is rigidly mounted in those two perpen dicular directions in such varying proportions as to cause the said cutting tool to transcribe an arcuate orbit. Various mechanical devices may be utilized to produce the movement indicated and the structure illustrated on the drawing forming a part of this speci?cation is believed to a tool of the character indicated of a construc be a highly e?icient embodiment of suitable me tion providing great rigidity and stability for the chanical means for carrying into effect the above tool proper. 10 indicated object. A further object of the invention is to provide Referring to the drawing, a standard base I a tool of the character indicated of great sim is utilized of conventional structure adapted to plicity, involving a very few parts and those of - be secured rigidly to the bed or tool carriage of simple construction lending themselves to great the lathe, planer, or other machine tool with e?iciency and economy in both manufacture and 15 which the device is to be used, and upon the top maintenance. face of this base member I is secured a circular A further object of the invention is to provide disk 2 as by means of screws 4. The disk 2 is pro a tool of the character of unusual versatility, vided with a diametrically disposed slot 3 prefer ‘inasmuch as it lends itself to ‘use for the cutting ably of dovetail cross-section as'here'in illustrated or dressing of both convex and concave surfaces 20 and the peripheral edge 5 of the disk 2 is beveled by means of the very simple adjustment of its in an outwardly and upwardly inclined direction. parts. ' Rotatably mounted upon the disk 2 is a ring 6_ Further objects and advantages will more par having its inner peripheral surface similarly bev ticularly appear in the course of the following eled to seat on the beveled edge of the disk 2 and 25 having its outer peripheral edge provided with ‘The invention consists in the novel construc worm gear teeth 1 adapted to be engaged by a tion, arrangement and combinations of parts worm 8 formed on a shaft 9 supported in bear hereinafter more particularly described and ings Ice-l0 mounted upon the base I. The shaft detailed description. claimed. One sheet of drawings accompanies this speci ?cation as part thereof, in which like reference characters indicate like parts throughout. Figure 1 is a plan View of the improved tool; Figure 2 is a side elevation; 9 is provided adjacent each end with cross pins ll adapted to engage a slotted sleeve I2 formed as a hub 0n the hand wheel l3 which may be ’ provided if desired with a handle H by means of which the worm 8 can be rotated selectively from either side of the device. Figure 3 is a vertical transverse cross-section 35 Seated upon the upper face of the ring 6 is a second ring I4, the inner peripheral surface of which is beveled in an opposite direction to that taken on line 4—4 of Figure 1; of the ring 6 as at 15. The ring [4 is provided ' Figure 5 is an exploded perspective view illus on opposite sides with parallel slots iii-46 trating the slidably adjustable parts and inter 40 through which extend screws "-41 which are locking key member for providing the limited secured in the ring 6. To assure the utmost pre movement of the tool carrier to perpendicular cision in the adjustment of the rings 6 and 14, the taken on line 3-3 of Figure 1; Figure 4 is a vertical longitudinal cross-section directions only; slots l6 may be enlarged adjacent the adjoining Figure 6 is a fragmentary vertical cross-section surfaces of the rings 6 and M as indicated at 30 45 to receive an elongated slide member I8 through taken on line 6—6 of Figure 1; and Figures 7 and 8 are diagrammatic ?gures illus which the screws I‘! are passed. . trating the movement of the tool in the opposite Mounted within the ring I4 is a second disk maximum positions of adjustment. The gist of the present invention is the pro- ‘ vision of a mechanical structure whereby a cut 50 ting tool can be so mounted with respect to a ?xed base as to assure the restriction of its move l9 having a beveled circular peripheral edge 20 forming a bearing for the ring M. The disk I9 is formed with a diametrically disposed slot 2| in its lower face, which slot is preferably as herein illustrated also of dovetail cross-section corre sponding to the slot 3 in the ?xed disk 2. A key member 22 is provided having oppositely ment to two perpendicular directions in associa~ tion with operation means adapted to transmit motion to the cutting tool and the parts upon 55 disposed dovetailed key portions 23, 24, which 2 2,390,914 said dovetail key portions are arranged perpen dicular with respect to each other. Referring to Figure 5, it will be noted that the dovetail key portion 24 of the key member 22 is adapted to slidably seat in the dovetail slot 3 of the ?xed disk 2, while the dovetail key portion 23 is adapted to slidably seat in the dovtail slot 2| of the sliding disk member l9 by reason of tion, the drawing herein illustrates a practical and efficient embodiment of the invention, but various mechanical expedients and modi?cations of structure will readily suggest themselves to those skilled in the art to produce the orbit or movement of the tool 29 within the’ scope of the present invention, as claimed. Having thus described my invention, I claim: 1. Radii dresser comprising a base, a circular which connection it will be observed that while the ?rst disk member 2 is held rigid by means 10 bearing member ?xed with respect to the ‘base, a rotatable member mounted to rotate with respect of its ?xed connection to the base I the upper to the ?xed circular bearing, a part slidable and disk I9 is slidable in perpendicular directions with adjustable with respect to the rotatable member respect to the disk 2, but is held in nonrotatable on a plane transverse the axis of the rotatable relationship to said disk. The disk l9 has secured upon its upper face a 15 member, said adjustable part formed with a cir plate 25 as by means of screws 26 and the plate 25 is formed with a tool holder lug 21 adapted to receive a cutting tool 29 which is held in fixed relationship to holder lug 21' as by set screw 28, cular bearing, a tool carrying part having a cir cular bearing connecting with the circular bear ing of the adjustable part, the ?xed circular bearing member and tool carrying member each the tool projecting beyond the rings 6 and it 20 provided on their confronting faces with perpen dicularly disposed slots, and a key member and also beyond the worm gear portion 1 formed formed with portions adapted to seat in each of on ring‘G. ' ‘ While thepartslQ, 25 and 21 are herein de 2. Radii dresser comprising a, base, a circular scribed as separate elements, these three portions bearing member ?xed with respect to the base, a constitute in fact ‘the tool holder proper and the rotatable member mounted to rotate with respect term tool holder as used inv the claims herein is to the ?xed circular bearing, a part slidable and intended to cover the parts‘ I9, 25 and 21 or their adjustable with respect to the rotatablelmember equivalents, whether formed as‘ separate portions said slots. secured together or as a unitary part. 7 ' 1 a ‘ i ' on a plane transverse the ‘axis of the rotatable To adjust ring I4‘with respect to ‘ring 6, ring 6 30 member, said adjustable part formed ‘with a cir cular bearing, a- tool carrying part having a cir may be provided with an outwardly projecting cular bearing connecting withthe circular bear lug 32 having upstanding spaced'?ngers 33 be ing of the adjustable part, the fixed ‘circular tween which is positioned a thumb nut 34 bearing member and tool carrying member each threaded on a screw 35 having its head 36 rotat provided on their confronting ‘faces with perpene 35 ably secured in ring 14.’ Scales 3| can be marked dicularly disposed slots, said slots intersecting at upon adjacent portions of rings 6 and I4 toin the center of the circular bearing member, and dicate the maximum adjustment of ring I 4 to a key member formed-‘with portions adapted-to produce either a concave or convex orbit for tool 29. g . seat in each of said slots. . . l The operation of the device is diagrammatical~ 40 3. Radii-dresser comprising a base, a part ?xed with respect to the base having a peripheral cir ly illustrated‘in Figures 7 and 8. Referring to cular bearing face, a ring rotatably mounted .on Figure 7, the center marked at indicates the cen said ?xed part, means for rotating the ring with ter of rotation of the ring 6, which ring 6 being respect to the base, a second ring adjustably rotatably mounted on the ?xed disk 2 always rotates on this center at. The center marked 0 Y mounted on the ?rst ring, a tool carrier having a circular peripheral bearing surface adapted to is the center of disk 19 and ring I4 in the maxi seat in said second ring and means connecting mum adjustment of ring M in the direction of the base and tool carrier restricting the ‘latter the tool holder 21 or to the left as illustrated in to movement in perpendicular directions only. i Figure 2. With ring l4 adjusted to the maximum ' 4. Radii dresser comprising a base, a disk hav extent to the left as permitted by slots l6, rota ing a beveled peripheral bearing face secured to tion of ring 6 by means of worm 8 and handle the base, a ring having an internal beveled face H will cause the ring 14 to rotate vas an eccen adapted to seat‘ on said disk and teeth on its outer tric and impart motion to the tool holder disk l9 (and its other associated parts 25 and 21) in 55 face, a second ring having an oppositely beveled inner face, means for adjusting the second ring perpendicular directions in different proportions diametrically of the ?rst, a tool carrier disk having successively to cause the tool 29 to transcribean a beveled peripheral face adapted to seat within arcuate orbit shown in dotted lines at G or a the second ring, the ?xed disk and tool carrier groove. The radius of the groove G is exactly disk having dovetail grooves respectively on their the same as the distance to which the center 0 is adjacent faces, ‘ said grooves arranged perpen shifted with respect to the center x. In Figure 8 dicularly, a key member having perpendicularly is illustrated the movement‘ of ring [4 with re disposed dovetail parts adapted to seat, in said spect to disk 6 where the center 0 of ring i4 is dovetail grooves and a worm mounted 'on. adjusted a maximum amount away from tool the base to engage and rotate the rings in unison holder 21 or to the right in Figure 2, in which 65 as an eccentric. , adjustment it will be noted that the tool 29 will 5. ‘Radii dresser comprising two rings super transcribe an arcuate orbit B or‘ a bead, the posed and adjustably connected to comprise ‘an radius of which bead will'ccnrorm exactly with eccentric, a ?xed circular base for ‘one of saidv the distance to which the point 0 is adjusted and. a circular‘member embraced by the with respect to the center 2:. Where the ring Mv 70 'rings other of said rings, the confronting faces of said‘ is adjusted with respect to ring 6 so that the base and circular member formed with ,perpenv center 0 coincides with thecenter :r, the tool 25 dicularly disposed slots, a key member having, will have no movement whatever, so that the portions slidable in said slots respectively wherecapacity of a particular tool is determined by by the circular member is restricted to movement. the adjustment permitted through slots it. 75 in perpendicular directions only, a tool carrier As indicated at the beginning of this speci?ca— 2,390,914 3 mounted on said circular member and means for members journaled upon the ?xed member and rotating the ring members in unison. 6. Radii dresser comprising in combination a ?xed member and a tool carrier, each of said members having a slideway, said members ar ranged with the slideway in one perpendicular to the slideway in the other, a key member having portions slidable in each of said slideways, ring tool carrier respectively with parallel axes, means for adjustably displacing the axes of said ring - members in their plane of rotation, whereby said rings constitute an adjustable eccentric to modify the radius of the orbit transcribed by the too] carrier. SALVATORE BARRERA.