US3336778A - Edge-forming apparatus and method - Google Patents
Edge-forming apparatus and method Download PDFInfo
- Publication number
- US3336778A US3336778A US373159A US37315964A US3336778A US 3336778 A US3336778 A US 3336778A US 373159 A US373159 A US 373159A US 37315964 A US37315964 A US 37315964A US 3336778 A US3336778 A US 3336778A
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- US
- United States
- Prior art keywords
- strip
- rolls
- edge
- edges
- roll
- 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
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/005—Edge deburring or smoothing
Definitions
- the strip may be enamelled, it may merely be interleaved with a layer of insulating material such as paper, Mylar or other suitable dielectric, or the two insulating means may be combined.
- the most troublesome portions of magnet strip coils are their edge portions, for, when the strip is formed, usually by slitting it yfrom wide sheets, the edges are likely to be burred and sharp-cornered.
- the edge is the most di'icult to cover uniformly with an insulating coat; the electrical stresses are most concentrated at the edges; and in the Wound coils the edges remain exposed compared to the llat surfaces, each of whlich is protected by an adjacent outer winding of the co1 I have found that the best magnet strip conductor is one in which the edge is fully formed, that is, the edge is rounded in a semicircle or similar curve that is tangent to, or blends continuously with, the at sides of the strip.
- I further propose to produce strip in a process with high reliability.
- edges of metallic strip can be rounded by electro-y lytic erosion, grinding or skiving, etc., but I have found that edge rolling the strip is the most reliable and satis- ⁇ factory process. In edge rolling, however, the strip is subjected to very high buckling pressures that tend not only to buckle the sheet but also to thicken the strip section adjacent to the edge rolls. I have found that known types of edge rolls do not perform satisfactorily, but that if the groove is cut in the roll in a manner not, to my knowledge, heretofore suggested, the resulting edge is fully formed and is free from irregularities, and the strip is free from pronounced thickening adjacent to the rolled edges.
- an essential element for rolling satisfactory edge contours on electrical magnet strip is a very deep groove in the edging roll.
- This groove should have a depth at least 21/2V times the thickness of the strip, and the depth may be as much as 8 times this thickness.
- the side walls forming the groove should be substantially straight in radial section and should taper outwardly only slightly so that the opening of the groove is no more than one or two mils wider than the groove at the beginning of the ear bottom contour blending into the sidewalls.
- the grooves have depth to width ratios of at least 2.5 and the 3,336,778 Patented Aug. 22, 1967 bottom curvature. This curvature at the base of the groove is preferably semicircular or parabolic and should blend into the side walls Without any sharp discontinuity.
- edge rolling is greater than theusual precision of slitting wide strips so that I prefer not to set my rolls in Xed positions and rely on the uniformity of the width of thestrip to seat it properly in the notch and grooves of the rolls. Rather, I mount one, or both, of each opposing pair of rolls to slide in the plane of the advancing strip, and I urge the rolls against the strip by the application of a constant force.
- an apparatus having all the rolls on one side of the strip slidably mounted and the rolls on the opposite side fXedly mounted is satisfactory for running strip that is perfectly straight. When there is a possibility of the strip being cambered, however, as is frequently the case in commercial practice, I prefer to mount all the rolls slidably.
- My apparatus for edge-forming metallic strip comprises means for paying off the strip and means for advancing it through the apparatus.
- the strip has square or angular corners, bein-g most commonly slit from a wide sheet, and my apparatus comprises brushes mounted in the path of advance of the strip rotating against the corners so as to deburr and break them. It also comprises V-notched rolls mounted to rotate on axes normal to the advance of the strip wtih circumferential V-notches positioned to engage the edges of the strip and further break the corners. Edgeforming rolls are mounted in my apparatus also to rotate on axes normal to the advance of the strip. There are means mounting the V-notched and edge-forming rolls movably against the strip, and means, such as air cylinders, urging the movably mounted rolls against the strip.
- edging roll for forming the edge of metallic strip has atV least one circumferential edge-forming groove with side walls substantially straight in radial section, and a curvilinopenings of the sidewalls forming the grooves do not exceed their separation at the circumferential lines where the bottom contour blends in, by more than about 2 mils.
- FIGURE 1 shows a side view of an edging roll made to my invention.
- FIGURE 2 shows an enlarged view of a groove in the roll of FIGURE 1.
- -FIGURE 3 shows an enlarged view of a V-notch in a roll used in my apparatus.
- FIGURE 4 shows a side view of the apparatus of my invention.
- FIGURE 5 shows a side view, partly in section, of the length 5 5 of FIGURE 4.
- FIGURE 6 shows a plan view of the apparatus of FIGURE 5.
- FIGURE 7 shows a front view of an element of the apparatus of FIGURE 4.
- my roll 11 it will be understood that the roll may have a single groove or it may have a plurality of grooves all the same size. In the latter case the grooves can be used consecutively as they become worn.
- the groove 12 is shown on an enlarged scale and is seen to be formed of straight side walls 16, 17 and a curvilinear bottom contour 18.
- the contour 18 is semicircular but it will be understood that other contours may also be used within the scope of my invention.
- the curvilinear bottom portion 18 is tangential to the walls 16, 17 at circumferential lines 19, 20, respectively, and these -lines mark the beginning of the curved portion f the groove 12.
- the groove 12 has a width w ⁇ which is from 0 to about 1 mil thicker than the stock to be edge rolled, and the walls 16, 17 taper outwardly so that a width x at the opening of the groove is greater than the width w.
- the difference between the opening and the bottom widths is not great, however, being only about 1 or, at most about 2 mils.
- the groove 12 has a depth d and the ratio d/ w constitutes an important element of my invention.
- d/w is equal to 3 and I have found that it should in no case be less than 21/2 for the proper practice of my invention.
- the grooved rolls such as the roll 11 are mounted on a bench 21 in an apparatus indicated generally by the numeral 22 (FIGURE 4).
- This apparatus comprises a pay-off stand 23 supporting a coil 24 of metallic strip 26 which is payed over a rubber-surfaced guide roll 27 to establish its elevation in passing through my apparatus.
- the strip 26 then passes under two brushes 28, 29 (FIGURE 6) and over two brushes 30, 31 which deburr the corners of the strip and also break the sharp angles of the corners.
- fiber brushes such as the brushes made by the Osborn Manufacturing Company and sold under the trademark Fascut.
- the preferred brushes are 8 inches in -diameter and 1/2 inch wide and are rotated at high speed such as 3400 r.p.m., but it will be understood that it has been known to deburr metal edges by brushing and other known types of brushes and speeds of rotation can be used within the scope of my invention.
- a further description of the mounting of the brushes 28-31 is given hereinbelow with reference to a detailed description of FIGURES and 6.
- the strip 26 passes between two notched rolls 33, 34 in each of which is cut a V-notch 36 (FIGURE 3) formed by walls 37, 38 which are straight in radial section and meet at an angle of about 90.
- My apparatus 22 has six pairs of grooved rolls 11 mounted in tandem, and upon leaving the furthest downstream of these rolls with edges of the strip 26 fully formed, the strip passes over a second rubber-surfaced guide roll 39 and through a pair of flat rolls 41, 42 set at the precise strip gage. These fiat rolls eliminate any slight thickening of the strip section. As stated hereinabove, it is a feature of my invention that the shape of the grooves cut in the rolls 11 serves to minimize thickening of the edges and the presence of the flat rolls 41, l42 are in the nature of a precaution to correct for any slight edge growth that may result. Upon leaving the fiat rolls 41, 42 the strip 26 enters a known type of degreasing.
- the brushes 28-31 are mounted on respective shafts 51-54 of motors 56-59 mounted, in turn, on respective sliding platforms 61-64 which slide in pairs of greased rails 66-66, 67-67.
- Screw blocks 68 are fastened to the bottom of each of the platforms 61-64.
- the screw blocks are threaded onto double pitch screws 69, 70 turned by respective hand cranks 71, 72.
- cranks 71, 72 By turning the cranks 71, 72 the positions of the brushes 28-31 can be adjusted horizontally to accommodate strips 26 of different Widths.
- the V-notched rolls 33, 34 are similarly mounted on sliding platforms 73, 74 slidable in rails 75-75 that can be adjusted by means of a crank 76, screw 77, and screw blocks 78. However, as can best be seen in FIGURE 5 the rolls 33, 34 are mounted to slide relative to the platforms 73, 74 so that they can follow slight variations in the width of the strip when urged by air cylinders 79a, 79h. These may be true variations or effective variations due to a slight camber in the strip. For this purpose the rolls 33, 34 are mounted on second platforms 81a, 81b slidable on the respective platforms 73, 74 within the gibs 82-82.
- the grooved edging rolls 11 are similarly mounted except that each of the slidable platforms mounts two rolls instead of one.
- platforms 84, 85 are slidable in rails 86-86 and are adjustable by means of a hand crank 87, screw 88 and screw .blocks 89.
- Second platforms 91a and 91b slidably support opposing yokes 92a, 92b for the rolls 11 and are urged toward each other 'by air cylinders 93a, 93b.
- the mounting of the additional 8 grooved rolls urged by air cylinders 94a, 94b, 95a, 95b are substantially identical. It will be understood that although I have preferred, in the illustrated embodiments of my invention to apply a force to only one of each pair of opposing rolls all the rolls might be mounted to continuously follow variations in the width of the strip within the scope of my invention.
- the cylinders 79a, 79b, 93a, 93b, 94a, 94b, 95a, 95b are fed by air lines 96-99 controlled by regulators 101-104 to supply a constant air pressure as indicated by air gages 106-109. This pressure can be changed according to the thickness and hardness or toughness of the strip being processed.
- the assembly 115 comprises a lower shoe 114 fixed to the rail 75 by means of posts 116, 117 and an upper shoe 1,18 fixed to a pair of rods 119 of which only one is visible in the drawing.
- the other rod and its supporting structure is symmetrically located on the other side of the platforms 84, 85 as seen in FIGURE 7.
- the rod 119 shown in the drawing is supported on brackets 121, 122 and urged against the said brackets by compression springs 123, 124.
- the rod 119 is fastened to the bracket 121 by means of a hinge 126, and to the bracket 122 by means of a latch 127.
- This arrangement permits the upper shoe to be lifted out of the way for threading my apparatus.
- edge-forming electrical conductor strip comprising the steps of:
- edge-forming electrical conductor strip comprising the steps of (A) brushing the corners of said strip to deburr the same and break the sharp angle of said corners,
- Apparatus for edge-forming metallic strip comprising:
- (E) means mounting said rolls continuously movable with variations in the width of said strip
- (F) means urging said rolls against said strip at a pressure suicient to round the edges of said strip but insufficient -to thicken said edges
- (G) means taking up said strip.
- Apparatus for edge-forming metallic strip having angular corners comprising:
- (A) means paying olf a supply of said strip
- (F) means mounting said rolls continuously movable with variations in the width of said strip
- (G) means urging said rolls against said strip at a pressure su'icient to round the edges of said strip but insuiiicient to thicken said edges
- (H) means taking up said strip.
- Apparatus for edge-forming metallic strip having angular corners comprising:
- (A) means paying olf a supply of said strip
- (G) means mounting said V-notched rolls and said edge-forming rolls continuously movable with variations in the width of said strip
- (H) means urging said V-notched rolls and said edgeforming rolls against said strip, at a pressure insuflcient to thicken said edges
- (I) means taking up said strip.
- An edging roll for forming the edge of metallic strip comprising:
- said groove having a width not substantially greater than 1 mil in excess of the thickness of said strip.
- An edging roll for forming the edge of metallic strip comprising:
- said groove having a width not substantially -greater than 1 mil in excess of the thickness of said strip.
Description
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US373159A US3336778A (en) | 1964-06-08 | 1964-06-08 | Edge-forming apparatus and method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US373159A US3336778A (en) | 1964-06-08 | 1964-06-08 | Edge-forming apparatus and method |
Publications (1)
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US3336778A true US3336778A (en) | 1967-08-22 |
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US373159A Expired - Lifetime US3336778A (en) | 1964-06-08 | 1964-06-08 | Edge-forming apparatus and method |
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Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3490120A (en) * | 1967-05-15 | 1970-01-20 | Ashtabula Bow Socket Co | Method and apparatus for constructing convertible top linkages |
FR2045808A1 (en) * | 1969-06-03 | 1971-03-05 | Mitsubishi Aluminum Co | |
US3580032A (en) * | 1969-04-17 | 1971-05-25 | United Eng Foundry Co | Apparatus for reducing the width of metallic slabs |
US3690139A (en) * | 1969-11-13 | 1972-09-12 | Francis P Brennan | Edge conditioning mechanism |
US3757556A (en) * | 1971-03-17 | 1973-09-11 | Nippon Kokan Kk | Method of roughing slab to predetermined width and apparatus thereof |
US3768293A (en) * | 1971-11-11 | 1973-10-30 | A Ruesch | Apparatus for conditioning the edges of metal strip material |
US4122874A (en) * | 1976-06-14 | 1978-10-31 | Clifford Alan Tyner | Apparatus for straightening the leads of dual in-line packages |
US4285227A (en) * | 1979-05-30 | 1981-08-25 | Nhk Spring Co., Ltd. | Edge roll assembly for manufacturing a taper leaf spring |
EP0287401A2 (en) * | 1987-04-16 | 1988-10-19 | British Steel plc | Dressing workable strip material |
US5024074A (en) * | 1989-05-19 | 1991-06-18 | Caterpillar Inc. | Apparatus and method for selectively forming a thickened edge on a plate of formable material |
US5113677A (en) * | 1989-05-19 | 1992-05-19 | Caterpillar Inc. | Apparatus and method for selectively forming a thickened edge on a plate of formable material |
US5477721A (en) * | 1990-11-29 | 1995-12-26 | Barnes; Austen | Edge conditioner |
US5752402A (en) * | 1990-11-29 | 1998-05-19 | Barnes; Austen | Vibratory or rocking edge treatment tool |
US20060137851A1 (en) * | 2004-12-27 | 2006-06-29 | Gyan Jha | Shaped direct chill aluminum ingot |
US20090000346A1 (en) * | 2004-12-27 | 2009-01-01 | Gyan Jha | Shaped direct chill aluminum ingot |
US20090056402A1 (en) * | 2007-08-30 | 2009-03-05 | Boesch Travis J | Apparatus and methods for shaping metal sheets |
US20150352680A1 (en) * | 2013-01-16 | 2015-12-10 | Richard POLIQUIN | An apparatus and method for manufacturing a steel component |
KR20200009437A (en) * | 2018-07-19 | 2020-01-30 | 주식회사 지테크 | Deburring device for steel band |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US668330A (en) * | 1900-09-22 | 1901-02-19 | Edwin Hancox | Pipe-making machine. |
US998448A (en) * | 1909-07-29 | 1911-07-18 | John Snelgrow Bachman | Straightening-machine. |
US2063798A (en) * | 1930-11-14 | 1936-12-08 | Youngstown Sheet And Tube Co | Apparatus for preparing sheets for welding |
US2326715A (en) * | 1941-02-13 | 1943-08-10 | Sharon Steel Corp | Manufacture of center stretched strip |
US3006401A (en) * | 1957-10-23 | 1961-10-31 | Acme Steel Co | Apparatus for conditioning metal strip having non-uniform stresses therein |
-
1964
- 1964-06-08 US US373159A patent/US3336778A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US668330A (en) * | 1900-09-22 | 1901-02-19 | Edwin Hancox | Pipe-making machine. |
US998448A (en) * | 1909-07-29 | 1911-07-18 | John Snelgrow Bachman | Straightening-machine. |
US2063798A (en) * | 1930-11-14 | 1936-12-08 | Youngstown Sheet And Tube Co | Apparatus for preparing sheets for welding |
US2326715A (en) * | 1941-02-13 | 1943-08-10 | Sharon Steel Corp | Manufacture of center stretched strip |
US3006401A (en) * | 1957-10-23 | 1961-10-31 | Acme Steel Co | Apparatus for conditioning metal strip having non-uniform stresses therein |
Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3490120A (en) * | 1967-05-15 | 1970-01-20 | Ashtabula Bow Socket Co | Method and apparatus for constructing convertible top linkages |
US3580032A (en) * | 1969-04-17 | 1971-05-25 | United Eng Foundry Co | Apparatus for reducing the width of metallic slabs |
FR2045808A1 (en) * | 1969-06-03 | 1971-03-05 | Mitsubishi Aluminum Co | |
US3688548A (en) * | 1969-06-03 | 1972-09-05 | Mitsubishi Aluminium | Apparatus for the manufacture of aluminum strip conductors |
US3690139A (en) * | 1969-11-13 | 1972-09-12 | Francis P Brennan | Edge conditioning mechanism |
US3757556A (en) * | 1971-03-17 | 1973-09-11 | Nippon Kokan Kk | Method of roughing slab to predetermined width and apparatus thereof |
US3768293A (en) * | 1971-11-11 | 1973-10-30 | A Ruesch | Apparatus for conditioning the edges of metal strip material |
US4122874A (en) * | 1976-06-14 | 1978-10-31 | Clifford Alan Tyner | Apparatus for straightening the leads of dual in-line packages |
US4285227A (en) * | 1979-05-30 | 1981-08-25 | Nhk Spring Co., Ltd. | Edge roll assembly for manufacturing a taper leaf spring |
EP0287401A2 (en) * | 1987-04-16 | 1988-10-19 | British Steel plc | Dressing workable strip material |
EP0287401A3 (en) * | 1987-04-16 | 1990-04-25 | British Steel plc | Dressing workable strip material |
US5113677A (en) * | 1989-05-19 | 1992-05-19 | Caterpillar Inc. | Apparatus and method for selectively forming a thickened edge on a plate of formable material |
US5024074A (en) * | 1989-05-19 | 1991-06-18 | Caterpillar Inc. | Apparatus and method for selectively forming a thickened edge on a plate of formable material |
US5477721A (en) * | 1990-11-29 | 1995-12-26 | Barnes; Austen | Edge conditioner |
US5752402A (en) * | 1990-11-29 | 1998-05-19 | Barnes; Austen | Vibratory or rocking edge treatment tool |
US20090000346A1 (en) * | 2004-12-27 | 2009-01-01 | Gyan Jha | Shaped direct chill aluminum ingot |
WO2006071607A3 (en) * | 2004-12-27 | 2007-04-12 | Arco Aluminum Inc | Shaped direct chill aluminum ingot |
US20080263851A1 (en) * | 2004-12-27 | 2008-10-30 | Gyan Jha | Shaped direct chill aluminum ingot |
US20060137851A1 (en) * | 2004-12-27 | 2006-06-29 | Gyan Jha | Shaped direct chill aluminum ingot |
US8381384B2 (en) | 2004-12-27 | 2013-02-26 | Tri-Arrows Aluminum Inc. | Shaped direct chill aluminum ingot |
US8381385B2 (en) * | 2004-12-27 | 2013-02-26 | Tri-Arrows Aluminum Inc. | Shaped direct chill aluminum ingot |
US9023484B2 (en) | 2004-12-27 | 2015-05-05 | Tri-Arrows Aluminum Inc. | Shaped direct chill aluminum ingot |
US20090056402A1 (en) * | 2007-08-30 | 2009-03-05 | Boesch Travis J | Apparatus and methods for shaping metal sheets |
US20150352680A1 (en) * | 2013-01-16 | 2015-12-10 | Richard POLIQUIN | An apparatus and method for manufacturing a steel component |
KR20200009437A (en) * | 2018-07-19 | 2020-01-30 | 주식회사 지테크 | Deburring device for steel band |
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Owner name: ATLANTIC RICHFIELD COMPANY, A PA CORP. Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ANACONDA COMPANY THE, A DE CORP;REEL/FRAME:003992/0218 Effective date: 19820115 |
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