US3327513A - Method and apparatus for working metal - Google Patents

Method and apparatus for working metal Download PDF

Info

Publication number
US3327513A
US3327513A US432286A US43228665A US3327513A US 3327513 A US3327513 A US 3327513A US 432286 A US432286 A US 432286A US 43228665 A US43228665 A US 43228665A US 3327513 A US3327513 A US 3327513A
Authority
US
United States
Prior art keywords
tubing
mandrel
ring
tapered
small end
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US432286A
Other languages
English (en)
Inventor
John W Hinshaw
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US432286A priority Critical patent/US3327513A/en
Priority to BE699288D priority patent/BE699288A/xx
Application granted granted Critical
Publication of US3327513A publication Critical patent/US3327513A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, wire, rods, tubes or like semi-manufactured products by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes
    • B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes specially adapted for making tubular articles
    • B21C1/24—Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes specially adapted for making tubular articles by means of mandrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/16—Making tubes with varying diameter in longitudinal direction
    • B21C37/18—Making tubes with varying diameter in longitudinal direction conical tubes

Definitions

  • the present invention relates to the drawing of metal tubing, and it relates particularly to methods and apparatus for drawing tubing which is initially of uniform diameter so as to apply a taper to the tubing.
  • Another object of the present invention is to provide a method and apparatus for tapering tubing which requires only a single drawing operation and utilizes only a single drawing ring, regardless of the amount of taper which is to be put into the tubing, regardless of the diametrical size of the tubing which is being tapered, regardless of the wall thickness of the tubing, and regardless of the composition of the metal in the tubing.
  • Another object of the present invention is to provide a novel method of applying a taper to tubing by combining both drawing and spinning in a single operation, thus permitting extremely thick or tough tubing to be formed to a taper.
  • Another object is to provide a method of drawing tapered tubing wherein a plurality of laminated tubes are drawn together so as to provide a tapered finished product which has a plurality of laminations that are tightly and uniformly bonded together in a permanent state of compression relative to each other.
  • a further object of the invention is to provide a method of tapering tubing which produces stepped variations in the diameter of the tubing, rather than a continuous taper, yet which employs only a single drawing operation.
  • Another object is to provide a method of drawing tubing wherein a controlled taper or other variation in the Wall thickness of the tubing is combined with a controlied overall taper in the diameter of the tubing.
  • a further object is to provide a novel method of tapering tubing wherein the tubing is tapered downwardly from a relatively large diameter to a relatively small diameter, and then back outwardly to a relatively large diameter, as for the production of a venturi tube, yet which requires only a single drawing operation.
  • FIG. l is a side elevation View of a mandrel employed in the present method.
  • FIG. 2 is a side elevation view of a tube to be drawn, the tube being necked down at one end for securing the tube against axial sliding relative to the mandrel during the drawing operation.
  • FIG. 3 is an axial section, partly in eievation, illustrating the tubing of FIG. 2 mounted on the mandrel of FIG. l, with the drawing ring and supporting and actuating structure in position for the commencement of a drawing operation.
  • FIG. 4 is a view similar to FIG. 3, with the drawing operation approximately one-half completed.
  • FIG. 5 is a view similar to FIG. 4, with the drawing operation substantially completed.
  • FIG. 6 is an axial section showing a presently preferred ⁇ drawing ring.
  • FIG. 7 is an axial section similar to FIG. 6, but illustrating a variation of the drawing ring particularly adapted for accommodating large tapers.
  • FIG. 8 is a view similar to FIG. 4, illustrating the drawing of laminated tubing.
  • FIG. 9 is a cross-sectional view illustrating the use of a mandrel of non-circular cross-section which may be employed in the present invention.
  • FIG. l0 is a fragmentary side elevation view illustrating a tapered ⁇ mandrel which is stepped in construction for providing stepped tapered tubing.
  • FIG. 1l is an axial section, partly in elevation, illustrating a method and apparatus for first tapering the tubing down to a reduced diameter and then tapering the tubing back out to an enlarged diameter, as for producing a venturi tube.
  • FIG. 12 is a view similar to FIG. 11, but with the drawing operation approximately one-half completed.
  • FIG. 13 is a view similar to FIG. 12, but with the drawing operation approximately three-quarters completed.
  • FIG. l illustrates a mandrel l0 for use in the present invention,the mandrel having an accurately finished tapered working surface 12, and having axially projecting end shafts 14 and 16 which are engageable by suitable supporting structure for moving the mandrel axially during operation, either by pushing from the large end of the mandrel or by pulling from the small end of the mandrel.
  • Flats 18 may be provided in the end shaft 16 for gripping the mandrel so that it can be pulled to the right in FIG. l.
  • FIG. 2 illustrates a section of tubing 20 which has been necked or nosed radially inwardly at 22 as by swedging or spinning to a reduced diameter for engagement against the small end of the mandrel so as to secure that end of the tubing to the mandrel to prevent axial slippage of the tubing relative to the mandrel during the drawing operation.
  • a pair of actuating plate members 24 and 26 are disposed generally at opposite ends of the mandrel 10 at the beginning of the drawing operation, and these plates 24 and 26 are actuated so as to move toward each other during the drawing operation to move the mandrel and the tubing which is supported thereon relative to the drawing ring employed in the invention.
  • This relative motion between the plates 24 and 26 may be accomplished by having either plate stationary, while the other plate is moved toward the stationary plate.
  • the end shaft 14 of mandrel 10 is supported in a positioning recess 2S in the end plate 3 24, while the other end shaft 16 extends through an opening 29 in end plate 26.
  • the end plate 26 is provided With a recessed face 30 against which a holder 32 abuts, the holder 32 providing support means for the drawing ring 34 employed in the present invention.
  • This holder 32 is preferably provided in the form of a segmented ring comprising a pair of semicircular segments 36 and 38 which are resiliently biased toward each other by means of a spring loop 40 disposed thereabout.
  • the holder 32 is provided with axial aperture 42 through which the mandrel 10 and tubing 20 pass during the drawing operation, and the holder 32 is axially recessed at 44 for receiving the rear end portion of the drawing ring 34, the contracting force of spring loop 4t) on the segments of holder 32 causing the drawing ring 34 to be resiliently gripped between the segments 36 and 38 of holder 32, which function in much the same manner as a vise.
  • the details of construction of the presently preferred form of drawing ring 34 employed in the invention are best shown in FIG. 6 of the drawing.
  • the ring 34 has front and rear ends 46 and 48, respectively, has an outer periphery 50 which is of generally cylindrical form, and has an inside surface S2 which commences at the rear end 48 in a short land portion 54, which is the most constricted part of the inside surface 52, the surface 52 curving forwardly and outwardly so as to meet the outer periphery 50 at the front end 46 of the ring.
  • the inside diameter of the land portion 54 ⁇ of the ring is preferably slightly less than the diameter of the mandrel at its small end plus twice the wall thickness of the tubing to be drawn, so ythat the land region 54 of the ring will tightly compress the tubing against the narrow end of the mandrel at the commencement of the drawing operation.
  • the forwardly facing, outwardly flaring contour of the inside surface 52 of drawing ring 34 is required so that the drawing ring will not cut into the bulge of the tubing which is immediately in front of the drawing ring in the early stages of the drawing operation.
  • a ring 34 which has an outer diameter approximately as large as the diameter of the tubing which is to be drawn, although satisfactory results have been obtained with ring diameters which are somewhat smaller than the outer tubing diameter.
  • Aedquate curvature of the forwardly flaring inside surface 52, and adequate material in the ring to accomplish the drawing operation, are best provided by having the wall thickness of the ring from the land 54 to the outer periphery 50 approximately equal to the radial distance from the surface of the mandrel at the small end of the mandrel to the outer diameter of the tube which is being drawn.
  • the length of the drawing ring 34 between the front and rear ends 46 and 48, respectively, will be varied according to the toughness of the material of the tubing.
  • a relatively malleable and formable material such as copper
  • a relatively short ring 34 may be employed.
  • arelatively tough material such as steel
  • a considerably longer ring 34 is employed so as to provide the necessary tensile strength in the ring.
  • a ring such as the ring 34a shown in FIG. 7 wherein a portion of the ring material is removed from the outer peripheral region adjacent to the rear end 48a of the ring.
  • This reduction of the outer diameter of the ring proximate the rear end 48a is designated by the numeral 56 in FIG. 7, and any desired amount of the material may be removed from this region without altering the contours of the operative surfaces of the ring.
  • the present invention has a radial distance between the land portion 54a and the outer peripheral portion 50a which is approximately as great as the radial distance from the axial center to the land portion 54a, and is designed to provide a large amount of taper in the tubing; for example, an amount such that the small end of the taper would be only about one-half of the diameter of the large end of the taper.
  • the amount of metal which would have been in the ring 34a if the outer region had not been reduced as at 56 would have been so much that there would be alikelihood of ironing or thinning out the tubing during the drawing operation.
  • the drawing ring must have sufcient tensile strength so as to be able to flatten the tubing wall down tightly and solidly against the surface of the mandrel, while at the same time the ring must be formable and not brittle, so as to continuously form to the changing shape of the mandrel as the ring passes axially over the mandrel and the tubing.
  • This preferred material is brass which comprises between and 90% copper, and which preferably has about copper content.
  • condition of temper of the drawing ring 34 employed in the invention where the ring is made of the preferred material does not substantially affect the process, as the preferred material will work-harden so as to have the necessary strength characteristics.
  • a variation of the present invention can be employed so as to provide a tapered or otherwise varying wall thickness in combination with tubing which is tapered in its overall size. This maybe accomplished by disposing the tubing over a mandrel which varies slightly from a perfectly cylindrical form, for example, a slightly tapered mandrel, and then drawing the mandrel and tube through a sizing die of fixed internal dimensions. This will -alter the wall thickness of the tubing according to the shape of the mandrel, for example, applying a taper to the wall thickness. This tubing having varying wall thickness is then treated in exactly the same manner as hereinabove described in connection with FIGS.
  • a further variation in the present process which is useful in the drawing of particularly thick or tough tubing is to provide relative rotation between the drawing ring and the mandrel, whereby to combine the drawing operation with a novel spinning operation wherein the gripping is confined around its entire periphery.
  • This combined drawing and spinning operation like the drawing operation alone, does not alter the wall thickness of the tubing.
  • the tubes 58 and 60 may be of the same materi-al, or may comprise two different materials, such as steel and aluminum or any other two metals.
  • the two tubes are disposed in telescoping relationship and are necked down over the small end of the mandrel as heretofore described, and they are then drawn in the same manneras a single tube.
  • the drawing operation lays the two tubes solidly down against the mandrel, and bonds the tubes together in a permanent state of compression.
  • FIG. 9 I have illustrated a cross-sectional view of a mandrel having a non-circular cross-section, the particular mandrel 62 illustrated in FIG. 9 being hexagonal.
  • the present drawing method is suitable for drawing circular tubing to such irregular cross-sectional shapes.
  • Any of a wide variety of crosssectional shapes may be imparted to the tubing by applying a die having a complementary cross-sectional shape, and the cross-sectional shape may vary along the length of the mandrel.
  • the shape may commence as a circular section and may then vary to a square or other polygon, or vice versa, or it may vary from one non-circular shape to another, as desired, so long as there are no grooves in the mandrel.
  • FIG. 10 I have illustrated a mandrel 64 of stepped, tapered construction, which I have also found to be suit- -able for use in connection with the present invention.
  • My drawing ring 34 will lay the tubing solidly against a mandrel such as that shown in FIG. 10, the tubing conforming not only to the elongated tapered portions, but also to the intermediate step portions, and the wall thickness of the tubing is not altered by the process.
  • a mandrel of the type suggested in FIG. l0 permits such products as ⁇ golf club shafts to be produced by the present invention without varying the wall thickness of the tubing and by employing only the single drawing step of the present invention, as compared with previous processes which required many steps and resulted in an altered wall thickness of the product.
  • FIG. 11 I have there illustrated an embodiment of the invention which permits tubing to be drawn down ⁇ from a relatively large diameter to a relatively small diameter, and then drawn back up to a larger diameter, thus permitting the drawing of a tube which will are outwardly toward both of its ends from a reduced central portion, as for a venturi tube.
  • This process is accomplished by employing a separable mandrel 66 having a pair of tapered mandrel portions 68 and 70 which are adapted to be axially aligned and in abutting relationship at their narrow ends. Suitable aligning means may be provided for interlocking the small ends of the mandrel portions 68 and 70 so as to retain them in alignment.
  • a back-up plate 72 is provided, and has an axial opening 74.
  • the separable mandrel 66, and a tube supported thereon and necked over the large end of the mandrel portion 68, are adapted to move axially through the opening 74- in back-up plate 72.
  • the back-up plate 72 has a forwardly facing recess 76 which serves as a seat Ifor holding the rear end 78 of drawing ring 8i).
  • the drawing ring employed in this embodiment of the invention preferably has cylindrical, generally parallel outer and inner walls, the outer wall being bevelled inwardly at the front end 82 of the rin-g, and the inner wall being bevelled outwardly fat the front end of the ring.
  • a split die 84 is supported relative to the back-up plate 72 so as to be movable toward the back-up plate 72, as by hydraulic actuating means (not shown), and it is preferred to move the die 84 toward the .back-up plate 72 at a rate which is correlated to the movement of the tapered mandrel portion 68 through the back-up plate 72.
  • the die 84 comprises die halves 86 and 88 which are held together until the tapered mandrel portion 68 has moved through the ring, and then which are separated and moved out of the way as best shown in FIG. 13.
  • Die 84 has a tapered inside cam face which cams the front end 82 of ring 80 radially inwardly as the die 84 moves toward the back-up plate 72 and as the mandrel portion 68 is moving through the back-up plate 72, whereby the tube 20 will be drawn down against the tapered mandrel 66 as the forward portion of the ring is continuously cammed inwardly.
  • the bevelled outer edge at the front end 82 of the ring cooperates with the die cam face 90 so as to provide excellent control of the inward camming of the ring.
  • the bevelled inner edge at the front end 82 of the ring 80 prevents the ring from cutting into the tubing, particularly as the die moves over the narrow center portion of the separable mandrel 66.
  • the necked down portion of the tube at the large end of the mandrel portion 68 is cut away, and the mandrel portions 68 and 70 may then be withdrawn from the opposite outwardly flaring ends of the finished tube.
  • the tube is merely withdrawn off of the small end of the mandrel.
  • tubing can be tapered down from a relatively large diameter to a relatively small diameter by squeezing a drawing ring radially inwardly in much the same manner as described above in connection with FIGS. 11, 12 and 13, but by merely gripping the large end of the tubing without employing a downwardly or radially inwardly tapering mandrel section like the mandrel portion 68.
  • This provides greatly increased flexibility of the present process, permitting a section of the tubing to be tapered inwardly without a mandrel, then a next section of the tubing to be tapered outwardly over a tapered mandrel starting at the small end thereof with the drawing ring unconfined about its periphery, and then tapered back inwardly by removing the tapered mandrel and again axially squeezing the ring so as to cam the ring radially inwardly within a die like die 84.
  • This sequence of operation may be repeated any number of times with the same ring, starting with either an inwardly tapering step or an outwardly tapering step.
  • the method of drawing tapered tubing which comprises the steps of: placing a length of tubing over an elongated mandrel which has a working surface that tapers from a relatively small end to a relatively large end; holding the tubing against longitudinal movement over the mandrel in a direction from the small end toward the large end of the mandrel by necking the tubing down over the small end of the mandrel so that the inside of the tubing adjacent to the small end ⁇ of the mandrel is smaller than the working surface of the mandrel at that end; and moving the mandrel and tubing axially through an annu- -lar metal drawing ring starting with the small end of the mandrel and working toward the large end so as to draw the tubing tightly against the working surface of the mandrel without substantially altering the wall thickness of the tubing, said drawing ring being of one-piece construction and of uniform composition throughout with its outer peripheral surface generally unconned, and having a uniform cross-sectional shape about its entire circumference;
  • tubing is caused to flow continuously from its unconstricted form ahead of the ring to its drawn form within the ring by having the inside surface of the ring flare forwardly and radially youtwardly to the leading end of the ring in a continuous curve from an innermost land portion of the ring proximate the trailing end of the ring.
  • the method of producing tapered tubing having a varying wall thickness along the length thereof which comprises the steps of: placing a length of tubing over vla first elongated mandrel which has a working surface that varies in radius an amount less than the wall thickness of the tubing; holding the tubing and said first mandrel against relative longitudinal slippage; passing said first mandrel and tubing through a sizing die having an orifice of fixed dimensions so as to produce variations in the wall thickness of the tubing; removing the tubing from said first mandrel; placing the tubing over a second elongated mandrel which has a working surface that tapers from a relatively small end to a relatively large end; holding the tubing against longitudinal movement over the second mandrel in a direction from the small end toward the large end of the second mandrel by necking the tubing down over the small end of the second mandrel so that the inside of the tubing adjacent to the small end of the second mand-rel is smaller than the
  • the method of drawing tapered tubing which comprises the steps of: placing a length of tubing over an elongated mandrel having relatively small and large ends and having a working surface of stepped, tapered forni comprising a plurality of successive tapered portions and -intermediate curved ramp portions leading from one tapered portion to the next, each individual tapered portion increasing in size toward the large end of the mandrel, and the successive tapered portions inc-reasing in size from the small end to the large end of the mandrel; holding the tubing against longitudinal movement over the mandrel ina direction from the small end toward the large end of the mandrel by -necking the tubing down over the small end of the mandrel so that the inside of the tubing adjacent to the small end of the mandrel is smaller than the working surface of the mandrel at that end; and moving the mandrel and tubing axially through .an annular rnetal drawing ring starting with the small end of the mandrel and working to
  • the method of drawing tapered tubing which comprises the steps of: placing a length of tubing over an elongated mandrel which has a working surface that tapers outwardly -to first and second relatively large ends from a smallest point intermediate the ends, the mandrel being axially separable at said smallest point; holding the tubing against longitudinal movement relative to the mandrel at said rst end; holding an annular metal drawing ring about the tubing at said first end of the mandrel between an abutment member and a split die member, said abutment and die members being -apertured so that the mandrel and tubing may pass therethrough, the abutment member engaging the ring proximate its trailing end facing toward said first end of the mandrel and the die having an annular inclined cam surface in its said aperture; simultaneously moving said abutment and die members toward each other so as to cam the leading end of the ring radially inwardly so that the ring will press the tubing tightly against
  • Apparatus for drawing tapered tubing which comprises: a mandrel about which a section of tubing is to be disposed, said mandrel having a working surface which tapers from a relatively small end to a relatively large end; an annular metal drawing ring of uniform composition throughout and having the same cross-sectional shape about its entire circumference; and means engageable with said mandrel and said drawing ring for holding said drawing ring and driving said mandrel and tubing thereon through said ring so as to draw the tubing tightly ⁇ against the working surface of the mandrel thereby to taper the tubing without substantially altering the wall thickness of the tubing; said drawing ring being relatively thin proximate its leading end which faces toward the large end of the mandrel and relatively thick at its trailing end so as to concentrate the radially inwardly directed drawing force of the ring against the tubing generally rearwardly in the ring.
  • the apparatus of claim 14 wherein the ring is composed of brass having a copper content lrangi-ng from about 80% to about 90%.
  • Apparatus for drawing tapered ⁇ tubing which comprises: a mandrel about which a section of tubing is to be disposed, said mandrel having a working surface which tapers from a relatively small end to a relatively large end; an annular metal drawing ring of uniform composition throughout having the same cross-sectional shape ⁇ about its entire circumference; and means engageable with said mandrel and said d-rawing ring for holding said drawing ring and driving said mandrel and tubing thereon through said ring so as to draw the tubing tightly against the working surface of the mandrel thereby to taper the tubing without substantially altering the wall thickness of the tubing; said drawing ring being relatively thin proximate its leading end which faces toward the large end of the mandrel and relatively thick at its trailing end so as to concentrate the radially inwardly directed drawing force of the ring against the tubing substantially to the rear of the leading end of the ring, and the ring having an inside surface which ares forwardly and radially out
  • the method of drawing tapered tubing which comprises the steps of: holding an annular metal drawing ring about a length of tubing between an abutment member and a split die member, said abutment and die members being apertured so that the tubing may pass therethrough, the die having an annular inclined cam surface in its said aperture opening toward said abutment member; simultaneously moving said abutment and die members toward each other so that the die will cam the ring radially inwardly against the tubing and moving the tubing axially through said rin-g so as to taper the tubing radially inwardly to a smallest point; removing the split die from engagement with the ring; and moving the tubing and a tapered mandrel within the tubing further in the same direction through the ring so as to draw the tubing upwardly along the mandrel and thereby taper the tubing radially outwardly from said smallest point.
  • the method of drawing tapered tubing which comprises the steps of: moving a section of tubing and a tapered mandrel within the tubing through a drawing ring so as to draw the tubing upwardly along the mandrel and thereby taper the tubing radially outwardly from a relatively small diameter to a relatively large diameter; removing said mandrel from the tubing; engaging the ring between an abutment member and a split die member, said abutment and die members being apertured so that the tubing may pass therethrough, the die having an annular inclined cam surface in its said aperture opening toward said abutment member; and simultaneously rnoving said abutment and die members toward each other so that the die will cam the ring radially inwardly against the tubing and moving the tubing axially through said ring so as to taper the tubing radially inwardly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)
US432286A 1965-02-12 1965-02-12 Method and apparatus for working metal Expired - Lifetime US3327513A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US432286A US3327513A (en) 1965-02-12 1965-02-12 Method and apparatus for working metal
BE699288D BE699288A (enEXAMPLES) 1965-02-12 1967-05-31

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US432286A US3327513A (en) 1965-02-12 1965-02-12 Method and apparatus for working metal

Publications (1)

Publication Number Publication Date
US3327513A true US3327513A (en) 1967-06-27

Family

ID=23715517

Family Applications (1)

Application Number Title Priority Date Filing Date
US432286A Expired - Lifetime US3327513A (en) 1965-02-12 1965-02-12 Method and apparatus for working metal

Country Status (2)

Country Link
US (1) US3327513A (enEXAMPLES)
BE (1) BE699288A (enEXAMPLES)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3540259A (en) * 1968-08-20 1970-11-17 Battelle Development Corp Segmented die holder for drawing apparatus
US3596491A (en) * 1969-05-19 1971-08-03 Battelle Development Corp Method for tapering tubes
US3602030A (en) * 1968-02-08 1971-08-31 Nippon Musical Instruments Mfg Method and apparatus for producing tapered tube
US3630062A (en) * 1968-07-13 1971-12-28 Nippon Kokan Kk Method of manufacturing fin metal tubing
US3654794A (en) * 1969-03-07 1972-04-11 Atomic Energy Commission Drawbench
US3672201A (en) * 1969-05-19 1972-06-27 Battelle Development Corp Method and apparatus for shaping tubes
US3701270A (en) * 1970-12-03 1972-10-31 Raymond A Matthews Method of drawing metal tubes
US3709020A (en) * 1970-05-14 1973-01-09 Babcock & Wilcox Co Method of and apparatus for producing a straight bore cold drawn tube
US3713318A (en) * 1971-01-14 1973-01-30 Reynolds Metals Co Apparatus for and method of forming a tubular metal blank into a tapered tube on a tapered mandrel
US3871094A (en) * 1974-04-26 1975-03-18 Norlin Music Inc Method of making seamless tubular bell section
US4428220A (en) 1981-02-03 1984-01-31 Forenade Fabriksverken Method and tool for the cold forging of internally profiled tubes
US5199151A (en) * 1989-11-13 1993-04-06 Earth Tool Corporation Method for making a pneumatic ground piercing tool
US5440797A (en) * 1989-11-13 1995-08-15 Earth Tool Corporation Method for making a pneumatic ground piercing tool
US20050011245A1 (en) * 2003-07-17 2005-01-20 Makoto Nishimura Method and apparatus for working tube
US20140366605A1 (en) * 2012-02-07 2014-12-18 Uinversal Can Corporation Diameter-reduction apparatus for can-trunk, can-body holder, can-manufacturing apparatus, and diameter-reduction method for can-body
US20240047644A1 (en) * 2022-05-09 2024-02-08 Zhejiang Qiushi Semiconductor Equipment Co., Ltd. Ribbon carrier assembly, welding device, and welding method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US252423A (en) * 1882-01-17 Edwin b
US414090A (en) * 1889-10-29 Draw-plate
US431041A (en) * 1890-07-01 Machine for making tubes
US2029552A (en) * 1933-10-11 1936-02-04 George E Barnhart Method and machine for making tapered tubes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US252423A (en) * 1882-01-17 Edwin b
US414090A (en) * 1889-10-29 Draw-plate
US431041A (en) * 1890-07-01 Machine for making tubes
US2029552A (en) * 1933-10-11 1936-02-04 George E Barnhart Method and machine for making tapered tubes

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3602030A (en) * 1968-02-08 1971-08-31 Nippon Musical Instruments Mfg Method and apparatus for producing tapered tube
US3630062A (en) * 1968-07-13 1971-12-28 Nippon Kokan Kk Method of manufacturing fin metal tubing
US3540259A (en) * 1968-08-20 1970-11-17 Battelle Development Corp Segmented die holder for drawing apparatus
US3654794A (en) * 1969-03-07 1972-04-11 Atomic Energy Commission Drawbench
US3596491A (en) * 1969-05-19 1971-08-03 Battelle Development Corp Method for tapering tubes
US3672201A (en) * 1969-05-19 1972-06-27 Battelle Development Corp Method and apparatus for shaping tubes
US3709020A (en) * 1970-05-14 1973-01-09 Babcock & Wilcox Co Method of and apparatus for producing a straight bore cold drawn tube
US3701270A (en) * 1970-12-03 1972-10-31 Raymond A Matthews Method of drawing metal tubes
US3713318A (en) * 1971-01-14 1973-01-30 Reynolds Metals Co Apparatus for and method of forming a tubular metal blank into a tapered tube on a tapered mandrel
US3871094A (en) * 1974-04-26 1975-03-18 Norlin Music Inc Method of making seamless tubular bell section
US4428220A (en) 1981-02-03 1984-01-31 Forenade Fabriksverken Method and tool for the cold forging of internally profiled tubes
US5199151A (en) * 1989-11-13 1993-04-06 Earth Tool Corporation Method for making a pneumatic ground piercing tool
US5440797A (en) * 1989-11-13 1995-08-15 Earth Tool Corporation Method for making a pneumatic ground piercing tool
US5487430A (en) * 1989-11-13 1996-01-30 Earth Tool Corporation Pneumatic ground-piercing tool and body therefor
US20050011245A1 (en) * 2003-07-17 2005-01-20 Makoto Nishimura Method and apparatus for working tube
US7530252B2 (en) * 2003-07-17 2009-05-12 Kabushiki Kaisha Hitachi Seisakusho Method and apparatus for working tube
US20140366605A1 (en) * 2012-02-07 2014-12-18 Uinversal Can Corporation Diameter-reduction apparatus for can-trunk, can-body holder, can-manufacturing apparatus, and diameter-reduction method for can-body
US9403203B2 (en) * 2012-02-07 2016-08-02 Universal Can Corporation Diameter-reduction apparatus for can-trunk, can-body holder, can-manufacturing apparatus, and diameter-reduction method for can-body
US20240047644A1 (en) * 2022-05-09 2024-02-08 Zhejiang Qiushi Semiconductor Equipment Co., Ltd. Ribbon carrier assembly, welding device, and welding method

Also Published As

Publication number Publication date
BE699288A (enEXAMPLES) 1967-11-03

Similar Documents

Publication Publication Date Title
US3327513A (en) Method and apparatus for working metal
US3570297A (en) Die and method for drawing metal tubes
US3508428A (en) Connector element for rigid electrical conduits and method of making the same
US2370089A (en) Tube flanging tool
US3603275A (en) Method of forming can bodies
US5533376A (en) Method for preparing a tubular blank having a thick wall for a following cascade drawing operation
US3572080A (en) Production of pointed workpieces
US3593552A (en) Can body fabrication
US3602030A (en) Method and apparatus for producing tapered tube
US3072086A (en) Method and apparatus for forming conical and related shapes
SU724078A3 (ru) Гильза дл изготовлени бесшовных труб
US2886170A (en) Method of drawing tubes
JPS5877719A (ja) 管端部フランジ成形法及びその成形機
US3349596A (en) Method and apparatus for making pinion wire and the like
US2428474A (en) Method of tube drawing
US4487049A (en) Working mandrel and method of rolling elongate hollow pieces in a multi-stand continuous mill on same working mandrel
EP0148514B1 (en) Method and apparatus for cold drawing and imparting curvature to metal tubes
US3756062A (en) High-velocity swaging
US3475944A (en) Reverse forming arrangement and method
US2083698A (en) Push bench method and apparatus
US1480843A (en) Method for the cold spurting of tubes and thin-walled metal pipes of lead, tin, and especially aluminium
JPH10277630A (ja) パイプ材の塑性加工方法
GB2077165A (en) Tube rolling
US717886A (en) Method of making seamless tubes or hollow articles.
US3501939A (en) Apparatus for and method of forming long tangent elbows