Патент USA US2404901код для вставки
July 30, 1946. A, F, @153 - . amwm TUBE-SEVERING MECHANISM Filed Aug. 25, 1942 3 Sheets-Sheet 1 July 30, 1946. ' A. F. was TUBE-SEVERING MECHANISM Filed. Aug.. 25,‘ 1942 W s Sheets-Sheet 2 //. 85p - is 16 k ( I- . 2b ,1 r / I ’ Patented July 30, 1946 UNITED STATES PATENT OFFICE 2,404,901 TUBE- SEVEREN G MECHANISM Anthony F. Cibs, Cleveland Heights, Ohio, as signor to Chase Brass & Copper 00. Incorpo rated, Waterbury, Conn., a corporation Application August 25, 1942, Serial No. 456,017 1 Claim. (Cl. 164*47) l 2 The. present; invention relates to improvements Fig. 6 is a perspective View of the movable cut in cutting mechanisms and. relates more partic~ ter-holder together with its tubular outer cut ularly to improvements in mechanisms for trans_ ter; versely severing tubes into desired lengths. The Fig. 7 is a perspective view of the movable in present invention, while not so limited, is espe- UL her-cutter looking mainly toward the outer end cially Well suited for producing rotating-bands thereof; for artillery projectiles from copper or the like. Fig. 8 is a perspective view of the stationary One of the objects of the present invention is outer-cutter, detached; to provide a superior tube-severing mechanism Fig. 9 is a broken perspective view of the inner which will effectively transversely sever a tube 10 end of the stationary inner-cutter, detached; without materially distorting the same. Fig. 10 is a perspective view of the movable in Another object of the present invention is to her-cutter, detached; provide amechanism of the character referred to Fig. 11 is a perspective View Of the movable which will effectively sever tubes into desired outer-cutter, detached; lengths Without creating appreciable chips or 15 Fig. 12 is a broken perspective view of a length other Waste material. of tube; A further object of the present invention is to Fig. 13 is a perspective view of a ring 01111 from provide a superior tube-severing mechanism a tube by the mechanism of the preceding ?g which will transversely sever a tube so cleanly ures; and as to minimize the need for a subsequent open 20 Fig. 14 is a perspective view of the stripping ation. Still another object of the present invention is to provide a superior tube-severing mechanism which will rapidly and effectively transversely plunger, detached. The particular tube-severing mechanism shown in the accompanying drawings for purposes of illustrating one form of the present invention, sever a tube without creating appreciable waste material and without material distortion of the product. With the above and other objects in view, as will appear to those skilled in the art from the present disclosure, this invention includes all features in the said disclosure which are novel over the prior art. In the accompanying drawings, in which con. tain modes of carrying out the present invention are shown for illustrative purposes: Fig. 1 is a broken view partly in side elevation and partly in vertical central-longitudinal section of one form of tube-severing mechanism constructed in accordance with the present invention, and with the parts in the positions which they assume immediately prior to the tube-cutting operation; Fig. 2 is a view in vertical central-longitudinal section of the mechanism at the right of Fig. 1 but on a larger scale and with the parts in the same positions as in Fig. l ; Fig. 3 is a view corresponding to Fig. 2 but showing the parts in the positions which they assume immediately following the completion of the tube-severing operation; Fig. 4 is a view partly in plan but mainly a 25 includes a stationary tubular outer-cutter l5, a stationary rod-like inner-cutter $6, a movable tubular outer-cutter H and a movable rod-like inner-cutter 18. The stationary outer-cutter i5 is preferably 30 formed of high-grade steel and is of tubular form with its interior and exterior both cylin drically contoured. The said stationary outer~ cutter i5 has the entire annular edge at the junction of its inner perimeter and its inner face :35 sharpened, though it is substantially only the lower semicircle which acts as a cutting-edge l9 having an extent substantially corresponding to the portion embraced by the bracket 26 in Fig. 8. While, as just noted, it is only the lower half <10 of the edge of the inner portion of the stationary outer-cutter I?» which functions as a cutting-edge, nevertheless, for simplicity and economy of con struction, the said outer-cutter is preferably in the form of a tube, as shown, and its interior is sized and proportoined to have a snug sliding ?t around the periphery of a tube 2| constituting the blank from the inner end of which is to be successively cut short lengths to provide rings such as the ring 22 shown in Figs. 3 and 13. 7.1) The rod-like inner-cutter I8 is designated as the stationary inner-cutter for the reason that it, horizontal sectional view taken on the line 4—-4 like the outer-cutter 55, has no lateral movement of Fig.2; Fig. 5 is a transverse sectional view taken on during the cutting operation, though it is mov able axially for purposes of installing a fresh tube the line 5-5 of Fig.2; _} 55 thereon, such as 2!, as will more fully herein 2,404,901 3 after appear. The said rod-like stationary in ner-cutter l6 has its outer periphery snugly en gaging with a sliding ?t the inner periphery of the tube 2!. Furthermore and as is shown es pecially well in Fig. 2, the inner end of the sta tionary inner-cutter I6 is arranged flush with the inner end of the stationary outer-cutter It. The embraced by the bracket 44 in Fig. 10. The inner portion of the movable inner-cutter i3 is surrounded by an axially-adjustable gauge CI sleeve 45 having its inner edge spaced outwardly forward upper corner of the inner-cutter l6 con stitutes a transverse cutting-edge 23 which latter has an extent of substantially a semicircle as - de?ned within substantially the limits of the bracket 24 indicated in Fig. 9. The tubular sta tionary outer-cutter I5 is rigidly mounted in a cutter-holder or block 25 supported on a base plate 26 and connected to a framework 21 of any suitable type. As will be noted by reference to Fig. 1, the stationary inner-cutter 16 is relatively quite long and has its outer end releasably mounted in an anchoring-head 28 so as to be held against both " lateral and axial movement under normal oper is, ating in turn, conditions. coupledThe in any said suitable anchoring-head manner to the outer end of the framework 2?, which latter also supports a tube-feeding head 29 (Fig. 1) hav ing the mandrel-like inner-cutter 16 extended therethrough and havingr capacity for sliding movement in a direction parallel with the lon gitudinal axis of the cutter 16. The tube-feed ing head 29 is provided with a pivotal dog 33 having a nose 3| adapted to be released from and entered into the gaps in a tube-feeding chain 32 of conventional roller-chain type. Returning now to the movable outer-cutter ll, it will be noted that the said cutter is rigidly mounted in a movable cutter-holder or block 33 having its inner or left face in sliding engage ment with the inner or right face of the sta 4 extent substantially corresponding to the portion from the inner face of the cutter £8 a distance corresponding to the desired width of the ring 22 to be produced. The said gauge-sleeve 45 is axially adjustable by means of an adjusting-nut ‘l6 threaded into the outer portion of the movable cutter-holder or block 33. Bearing against the outer face of'the adjusting-nut to is the inner end of a helical cutter-retiring spring 41 which has its outer end bearing against the inner face of the cam-head 42 of the inner-cutter i8. As thus arranged. the cutter-retiring spring 41 serves to yieldingly urge the entire movable inner-cut ter 18 axially outwardly away from the station ary inner~cutter it. The movable outer-cutter if has an internal diameter corresponding to the internal diameter of the stationary outer-cutter [5 with respect to which it is in end-to-end relationship and re ceives in its interior the gauge-sleeve 135, which . latter substantially corresponds in thickness to the thickness of the tube 2 I. The corner formed at the junction of the upper portion of the inner face of the cutter H and the upper portion of its inner perimeter constitutes a cutting-edge 48 of a lateral extent substantially corresponding to that embraced by the bracket 49 in Fig. 11. The lower inner portion of the movable outer-cutter H’ is cut away to a depth slightly exceeding the width of the ring 22 to provide a clearance-notch 50 forming a vertical continuation of a clear ance-notch 5| formed in the inner face of the vertically-movable cutter-holder 33, all for pur poses as will hereinafter appear. The vertically-movable cutter-holder 33 before tionary cutter-holder 25 before referred to, as is especially well shown in Figs. 1 to 4 inclusive. 40 described is yieldingly urged upwardly to nor mally maintain its cutters l1 and I3 in axial At each of its respective opposite sides, the right alignment with the stationary cutters l5 and [5, or outer face of the cutter-holder 33 has sliding by means of a plurality of vertically—reciprocat— engagement with and is guided by two laterally spaced-apart spacing-blocks 34-44 suitably se cured to the framework 21. The respective outer or right edges of the spacing-blocks 34-31% (Fig. 4) are seated against the left face of a block llke crosshead 35 also rigidly secured to the framework 27. The said crosshead 35 is formed ing plungers 52 extending upwardly through and guided in the base-plate 26. The lower ends of the plungers 52 are mounted in a plunger-plate 53 located beneath the base-plate 26 and sliding upon a vertical stud 54 anchored at its upper end in the said base-plate 26. Encircling the in its inner or left face with a vertical groove 36 50 stud 54 at a point below the plunger-plate 53 is a helical return-spring 55 thrusting at its up in which is mounted a cam-plate 31 having in its per end against the underside of the plunger left face an advance-dwell 38 extending perpen dicularly with respect to the axis of the tube 2! and a similarly-extending retirement-dwell 39 displaced to the right with respect to the ad Vance-dwell 33 and connected thereto by an in clined surface 43. The cam-plate 3'! is adjust~ able in the groove 33 of the crosshead 35 by plate 53 and resting at its lower end upon a disk like spring-seat 56 secured to the lower end of 55 the stud 54 by means of one or more nuts 51, as is shown in Fig. 1. As thus constructed and arranged, the return spring 55 and associated parts serve to normally maintain the movable cutter-holder 33 in its means of a plurality of horizontal set-screws ll! mounted in the outer portion of the said cross 60 uppermost position, in; which the outer and inner movable-cutters I‘! and 18 are in precise head. axial alignment with the normally-stationary The movable inner-cutter [8 before referred to outer- and inner-cutters l5 and IS. The upward is provided at its outer or right end with a cam movement of the cutter-holder 33, and hence of head 42 having a portion extending into and 65 the parts carried thereby, is limited by the en vertically sliding in the groove 38 in the cross head 35 and shaped for sliding engagement with the surfaces 38, 39 and All of the cam-plate 3'! located in the said groove. The cylindrically contoured body-portion of the said movable in ner-cutter [3 corresponds in size to the normally stationary inner-cutter l6 and hence corresponds in size to the interior diameter of the tube 2!. The inner lower corner of the inner-cutter I8 constitutes a cutting—edge 43 having a transverse gagement of upper portions of the said holder with adjacent portions of the framework 21. Below its cutters l5 and 16, the stationary cutter-holder or block 25 is formed in its inner 70 face with a cylindrically-contoured recess 58, from the end wall of which leads an eccentrically located cylindrically-contoured recess 59 of relatively-smaller diameter than the recess 58. Leading to the left from the end wall of the re 15 cess 59 to the left side of the cutter-holder 25, 2,404,901 5 is a passage 60 smaller-in diameter than the re cess 59 and arranged concentrically therewith. In the relatively-large~diametered recess 58 there is located the cylindrically-contoured head 6| of a reciprocating stripping-plunger B2. The said head 6! has a downwardlv-and-inwardly sloping inner face and has a diameter only slightly less than the internal diameter of the ring 22 before referred to. The stripping plunger 62 also includes a cylindrically-contoured shank 63 reciprocating in the recess 59 and ex tending outwardly from the head 6! in eccentric relationship thereto. The stripping-plunger 82 also includes a relatively-small-diametered stem 64 rigid with and extending outwardly from the shank 63 through the passage Si) in the cutter holder 25. As shown, the outer end of the stem 64 which projects beyond the left face of the stationary cutter-holder 25, is provided with one 6 The severing just above referred to will result in the creation of a ring'such as 22, and the continued downward movement of the parts will transport the said ring and the other parts re ferred to downwardly into the positions in which they are shown in Fig. 3. It is here to be noted that immediately following the completion of the severance of the ring 22 from the tube 2|, the movable inner-cutter I8 is axially retired from left to right by the cutter-retiring spring 41, This movement is made possible by the sliding of the cam-head 42 of the said cutter l8 down the incline 40 and onto the retirement-dwell 39 of the cam-plate 37. In reaching the position in which it is shown in Fig. 3, the severed ring 22 will have engaged with the sloping inner face of the stripping plunger 62 and will have forced the same to re~ tire to the left against the tension of its spring or more adjustable stop~nuts 65 which serve to 20 66. When, however, the ring 22 reaches a posi limit the movement of the plunger 62 in a direc tion in axial alignment with the head 6! of the tion from left to right. Encircling the stem 64 stripping-plunger 62, the said stripping-plunger and thrusting at its respective opposite ends will move to the right under the urge of its spring against the shank 63 and the end wall of the 66 and enter the outer end of its head GI. into recess 59, is a helical spring 66 which exerts a ‘ the interior of the ring 22, as is shown in Fig. 3. constant effort to move the stripping~plunger 62 The ram 68 will now be caused to retire up from left to right. wardly, thereby permitting the return-spring 55 Immediately below the outer tip of the to assert itself and act through the associated stripping-plunger G2 and below the clearance parts to return the movable cutter-holder 33 and notches 50 and 5| respectively formed in the 30 the parts carried thereby back into the positions outer-cutter l1 and the cutter-holder 33, is in which they are shown in Figs. 1 and 2. During a discharge-passage 61 extending vertically this upward travel of the movable cutter-holder through the base-plate 26 and designed and 33 and associated parts, the just-severed ring 22 adapted to have successive rings like 22 pass will be restrained against upward movement by 35 downwardly therethrough as the same are cut the stripping-plunger 62, and when the parts of off from a tube such as 2|. the mechanism ultimately reach the positions in The downward or cutting-stroke of the mova which they are shown in Figs. 1 and 2, the ble cutter-holder 33 may be effected in any ap previously-restrained ring 22 will be free to drop proved manner but for purposes of illustration off of the head 6| of the stripping-plunger 62 of one form of the application of the necessary 40 and pass downwardly through the discharge power, there is shown in Figs. 1, 2 and 3, the ram passage 6'! in the base-plate 25 and thence into 68 which may form a feature of a power press a suitable receptacle. and which is adapted to impinge against the As the parts move from the positions in which upper surface of the movable cutter-holder 33. they are shown in Fig. 3 back to the positions in 45 To make clear the operation of the mecha which they are shown in Figs. 1 and 2, the cam nism shown in the accompanying drawings and head 42 of the movable inner-cutter I8 will ride above described, let it be assumed that the parts up the slope 40 and onto the advance-dwell 38 occupy the positions in which they are shown in of the cam-plate 37, thereby moving the cutter Figs. 1 and 2, in which it will be noted that the l8 axially to the left and back into its cutting end of the tube 2| is abutted against the adjacent end of the gauge-sleeve 45. It is also to be noted that the movable inner-cutter H3 is at the limit of its movement to the left and therefore its cutting-edge 43 is in transverse alignment with the respective cutting-edges of the stationary inner-cutter l6, stationary outer-cutter l5 and movable outer-cutter ll. If now, the ram 68 is caused to descend, it will force the movable cutter-holder 33 and the parts carried thereby downwardly from the po sitions in which they are shown in Figs. 1 and position. Following the restoration of the parts to the positions in which they are shown in Figs. 1 and 2, the tube 2! may be again advanced until its fresh~cut end is again seated against the adja cent end of the tubular gauge-sleeve 45, prepara tory to another cycle of operation of the mech anism. This feeding of the tube 2| may be ef fected in any suitable manner by advancing the tube-feeding chain 32 to the right, thereby caus 60 ing the tube-feeding head 29 to thrust against the outer end of the tube 2 I. 2, into the positions in which they are shown in By means of the present invention, a tube of Fig. 3. The movement referred to will cause the copper or other material may be severed into de cutting-edge 48 of the movable outer-cutter ll sired lengths without the creation of appreciable to coact with the cutting-edge 23 of the sta 65 chips or other waste material, and with ‘but a tionary inner-cutter 16 to thereby sever the minimum, if any, distortion of the tube. upper half of the tube 2!, indicated by the The invention may be carried out in other bracket 69 in Fig. 12. Simultaneously also and speci?c ways than those herein set forth without during the ‘severing action just referred to, the departing from the spirit and essential charac substantially semicircular transverse cutting teristics of the invention, and the present em edge 43 of the movable inner-cutter 18 will coact bodiment is, therefore, to be considered in all re with the substantially-semicircular transverse spects as illustrative and not restrictive, and all cutting-edge I9 of the stationary outer-cutter [5 changes coming within the meaning and equiva to sever the lower half of the tube 2|, indicated lency range of the appended claim are intended by the bracket 10 in Fig, 12. to be embraced therein. 2,404,901 7 I claim: A tube-cutting mechanism, including in combi nation: a ?rst cutter-holder; a ?rst outer-cutter having a transverse cutting-edge at its inner end substantially conforming in size and. shape to the outer perimeter of a ?rst half of a tube to be cut and carried by the said ?rst cutter-holder; a ?rst inner-cutter located within the said ?rst outer-cutter and having a transverse cutting edge located at its inner end in substantial trans verse ‘alignment with the cutting-edge of the said ?rst outer-cutter and Substantially conform ing in size and shape to the interior perimeter of the second half of the tube to be out; a second cutter-holder movable in a direction transverse to the ‘axes of the said ?rst outer-cutter and the said ?rst inner-cutter; a second outer-cutter carried byv the said second cutter-holder in end-to-end relationship with the said ?rst outer-cutter and having a transverse cutting-edge in substantial transverse alignment with the respective cuttingedges of the before-mentioned cutters and sub stantially conforming in size and shape to the exterior perimeter of the second half of the tube to be out; a second inner-cutter disposed within the said second outer-cutter in end-to-end rela tionship with respect to the said ?rst inner-cutter and having a transverse cutting-edge at its inner 8 end located in substantial transverse alignment with the inner ends of the before-mentioned cut ters and substantially conforming in size and shape to the inner perimeter of the first half of the tube to be cut, the said second inner~cutter being axially movable toward and away from the said ?rst inner-cutter; the said second outer-cut ter being cut away or relieved at its inner end opposite its transverse cutting-edge to provide a clearance-passage fOr the substantial radial dis charge of a severed portion of the tube; a spring pressed stripping-member secured to the said ?rst cutter-holder and located outwardly of and in line with the clearance-passage in the said sec ond outer-cutter; means for moving the said second cutter-holder and the second outer-cutter and inner cutter carried thereby in a direction transverse to the axis of the tube to be out to thereby transversely sever the tube and transport the severed section thereof into position for en gagement with the said stripping-member; and means for Withdrawing the said axially-movable inner-cutter out of the portion of the tube Within which it is normally located and after the com pletion of the tube-severing movement of the said second cutter-holder. ANTHONY F. 01138.