US3729968A - Working of strip metal - Google Patents
Working of strip metal Download PDFInfo
- Publication number
- US3729968A US3729968A US3729968DA US3729968A US 3729968 A US3729968 A US 3729968A US 3729968D A US3729968D A US 3729968DA US 3729968 A US3729968 A US 3729968A
- Authority
- US
- United States
- Prior art keywords
- strip
- coil
- metal
- face
- pressure
- 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
Links
Images
Classifications
-
- 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
- B21D53/00—Making other particular articles
- B21D53/16—Making other particular articles rings, e.g. barrel hoops
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S83/00—Cutting
- Y10S83/924—Work wrapped or coated around a core, not part of the machine
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/02—Other than completely through work thickness
- Y10T83/0304—Grooving
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/525—Operation controlled by detector means responsive to work
- Y10T83/531—With plural work-sensing means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/525—Operation controlled by detector means responsive to work
- Y10T83/541—Actuation of tool controlled in response to work-sensing means
- Y10T83/543—Sensing means responsive to work indicium or irregularity
Definitions
- ABSTRACT Annular metal rings are manufactured by winding metal strip into a tightly compacted helical coil, cutting the coil, and securing together the ends of the individual rings so formed. Compensation for distortion of the strip produced by winding the strip is made by a die against which the strip being wound is pressed by force applied through the coil.
- This invention relates to the manufacture from metal of annular rings and part-annular components.
- annular metal rings for use as clutch plates and seal rings for example, are stamped out from sheet metal and the metal within the rings is scrapped. If the rings have relatively large inside diameters and the outside diameters are not very much greater, the quantity of metal wasted is much more than that used. Since the monetary return on the metal sent for scrap is very much less than the cost of the raw material, the effective raw material cost of manufacturing rings by the conventional method may be much greater than the cost of the material used in the rings. To reduce the overall cost of manufacturing annular rings it has been proposed for many years to cut such rings from a coil wound from metal rod or strip. However, when an annular ring is formed in this way its outer edge stretches and becomes thinner. Consequently, although the surfaces of the stock from which the ring is formed may be perfectly parallel, the cross-section of the ring has a slight taper and the inner edge has a ripple.
- the present invention differs from the prior art in two important respects. Firstly, the shaping of the strip is carried out! by drawing the strip across a stationary drawing face which is profiled to cause a flow of metal towards the 1 radially outer region of the strip: and,secondly, the shaping takes place while the strip is forced against the drawing face by pressure transmitted through a tightly compacted coil. consisting of the previously wound turns. More specifically, the drawing face is positioned so as to prevent the formation of a ripple along the edge of the strip which will become the inner edge of the coil, and to collect and redistribute the metal which would otherwise have formed the ripple. The drawing face is therefore located in a position where it is contacted by the strip just before bending of the latter commences.
- a stationary drawing face is able to shape the strip better than forming rolls without the effect of increasing the hardness of the strip.
- the transmission of pressure to the strip against the drawing face by way of the coil has a number of advantages,thus, the pressure applied to the strip against the drawing face can be of any required magnitude,for example,up to 200 tons in a preferred embodiment of machine, such a pressure being in excess of most if not all ordinary requirements;:the strip is drawn over the face by frictional contact with the coil; and the surface in contact with the portion of strip being shaped is continuously being replaced so that there is no risk of this second die face causing wear.
- FIG. I is a perspective view of one embodiment of machine for winding coils from strip metal in accordance with the invention.
- FIG. 2 is a section taken on the axis of the mandrel of the machine of FIG. 1, omitting the mandrel for clarity, during the winding ofa coil,
- FIG. 2A is a similar section of a machine for winding disked rings
- FIG. 3 illustrates diagrammatically the severing of the coil to separate the turns
- FIGS. 4 and 4A illustrate diagrammatically a system for severing the coil
- FIG. 5 is a perspective view of the tailstock end of a further embodiment of machine
- FIG. 6 shows one embodiment of ring provided by the invention
- FIG. 7 shows the ring of FIG. 6 being welded
- FIG. 8 is a side elevation of a second machine for coiling strip
- FIG. 9 is a view taken on the line 9-9 of FIG. 8, but to a larger scale
- FIG. 10 is a sectional view taken on the line A-B of FIG. 9.
- a machine for winding steel strip ofa commercially available grade into a helical coil preparatory to cutting the individual turns to form annular rings or part-annular components comprises a bed 1, a headstock 2 at one end of the bed and a tailstock 7 which is guided for movement along the bed by guideways 24.
- a hydraulic motor 25 is mounted on the headstock and is operable to rotate a drive plate 26.
- a tubular extension 27 projects fromdrive plate and has a drive ring 10 at its outer end.
- the end surface 30 of the drive ring has a slot 11 for receiving and retaining the end-of a length of metal strip to be wound.
- One edge of the slot stands proud of the other by a distance equal to the thickness of the strip strip and the surface 30 slopes helically from one edge to the other so that a helical coil of strip may be formed against the drive ring.
- a mandrel 3 extends retractably through the tubular extension 27 and is keyed so as to rotate with the drive ring.
- the tailstock is linked at 17 to the piston rod 31 of a hydraulic cylinder 14 supported in the headstock and associated with a control system so that movement of the tailstock away from the headstock is resisted by the variable resilient force.
- the tailstock supports a housing at the center of which is mounted a die block 4 having a central opening 13 which is dimensioned to receive the mandrel 3.
- the die block has a pressure face 12 which commences with a substantially linear entry zone 121 and increases in distance from the front face of the support housing 5 through part of one turn of a helix to terminate at an edge 124 which is spaced from the surface at the entry zone by a distance substantially equal to the thickness of the strip to be wound.
- a strip support 32 is provided immediately below the entry zone so as to provide an edge 33 which supports strip fed to the machine.
- the entry zone is shaped to provide a drawing face to force metal of the strip from the inner to the outer side of the mandrel axis N before each segment of the strip reaches the vertical axis V intersecting the die ring axis.
- the shape of the entry zone is seen more clearly in FIG. where the scale as viewed vertically in the figure is exagerated whereas, as viewed horizontally the scale corresponds to FIG. 9, thus the thickness of the strip entering the zone (i.e. dimension 1:) may be about 0.036 inches whereas the width of the strip (i.e. dimension y) may be about 2 inches.
- the entry zone has an initial section 35 which is substantially flat and normal to the block die axis. This section merges into a drawing face 37 which is shaped to produce a flow of metal in the downwards direction as viewed in FIG. 9 as strip is forced across it. As seen in FIG. 10 the drawing face has a surface 36 which extends away from the section 35 at an obtuse angle 38 which is appropriate to the task in hand and merges into the surface 122 which has the correct gradient to cause the rings to lie one against the other as they are formed.
- the line 39 marking the commencement of the surface 36 of the drawing face extends across the entry zone as seen in FIG. 9 either diagonally, at the angle indicated, or at another angle, depending upon the material.
- the end of a strip of metal is bent over at right angles to its length and inserted in the slot 11, which is located at the 6 oclock" position.
- the tailstock is moved hard up against the face of the drive ring and the hydraulic system set to provide the required resistance to movement.
- the motor is then started so that strip is drawn along the entry zone and around the arcuate zone of the pressure face so as to build up a series of helical turns, the tailstock being forced back against the resilient resistance. Because the coil is under pressure, the strip is drawn into the coil by frictional pressure transmitted through the turns of the coil.
- the segment of strip at any instant in the entry zone is pressed against the die face by the length of the strip instantaneously leaving the pressure face across edge 124.
- the shape of the drawing face and the angle at which it extends across the entry zone depend upon the thickness of the strip, its hardness, malleability and other characteristics so that the exact shape must be determined afresh for any given product.
- a hydraulic cylinder 18 is mounted to one side of the housing 5.
- the piston rod of the cylinder carries at its end a bracket equipped with a scoring tool 19 which, when the cylinder is pressurized, traverses the length of the completed stationary coil while it is still compacted and scores an axially extending groove in the outer surface of the coil.
- the cylinder 14 is then vented, the mandrel retracted and the coil removed.
- the slackened coil thus forms a loose helix having a series of equally spaced triangular notches along one edge, each notch having sides about 0.01 inch long.
- the loosened strip is then passed lengthwise through a quillotine shown in FIGS. 4 and 4A.
- the guillotine has a fixed blade 202 and a movable blade 201 operated by a fluid logic circuit 203.
- the circuit includes a sensor 21 having a transmitter tube 211 associated with one jaw 201 and a receiver tube 212 associated with the other jaw 202.
- a jet of air constantly issues from tube 211 and in the absense of strip S enters tube 212, the jet intersecting the line of cut of the guillotine.
- the edge of the strip blocks transmission of the jet.
- the logic circuit provides that the guillotine is capable of operating only if both of the sensors 22 are blocked by the strip and the sensor 20 unblocked.
- FIGS. 1 and 2 illustrate a further embodiment of a machine for winding strip metal in which the same references are used to designate the parts corresponding to the parts shown in FIGS. 8 to 10 and wherein the die block has a channel 123 for the strip, the radially inner edge of the channel being formed by the mandrel when the latter is in position.
- a pin 1 instead of a slot, is used to secure the strip to the drive ring 10 and rolls 3 guide the strip S into the entry zone of the die channel.
- the depth of the channel decreases from maximum depth in the entry zone to zero depth at 124 where the strip rides out onto the end surface of the die block.
- FIG. 1 illustrates a further embodiment of a machine for winding strip metal in which the same references are used to designate the parts corresponding to the parts shown in FIGS. 8 to 10 and wherein the die block has a channel 123 for the strip, the radially inner edge of the channel being formed by the mandrel when the latter is in position.
- a pin 1 instead of a
- a pair of hydraulic cylinders 14 mounted behind the tailstock apply the requisite resistance to movement of the tailstock.
- a further embodiment, shown in FIG. 5, includes an extended entry zone and a front plate 40 to apply pressure to the strip before it enters the coil in cases where a ripple is found to build up a considerable distance ahead of the point where the bend takes place.
- the ends of the ring can either be welded together, as shown in FIGS. 6 and 7, or keyed together by a lug on one end entering a cut-out in the other.
- the die may over or under compensate to thereby produce a ring with a cross section other than rectangular.
- a machine for winding metal strip for use in the manufacture of annular rings and part-annular components, said machine comprising a frame, strip endretaining means supported by said frame for rotation about an axis, drive means for driving said strip endretaining means in rotation about said axis, a mandrel arranged with its axis coincident with the axis of rotation of the strip end-retaining means, support means mounting a pressure face in opposed relationship to said strip end-retaining means, and means for resiliently resisting relative movement apart of said strip end-retaining means and pressure face support means; said pressure face including an entry section leading in to an arcuate section which extends around said axis through part of one turn ofa helix the pitch of which is substantially equal to the thickness of the strip to be coiled, said pressure face including a sizing zone profiled to effect flow of metal from one side to the other of the neutral axis of strip drawn across said sizing zone under pressure transmitted through a coil built up on said mandrel from said means resisting relative movement apart of said strip-
- strip end-retaining means is a drive ring having a radial slot in a support surface which forms a turn of a helix, the pitch of which corresponds to that of the arcuate section of said pressure face.
- said sizing zone includes a drawing face having an upstream surface meeting a downstream surface in an obtuse angle so as to provide a space for trapping and redistributing the metal of the strip.
- a machine as claimed in claim 1 including a pair of opposed surfaces defining a path for strip about to enter said entry zone, said surface being adapted to prevent the formation of a ripple in strip ahead of said entry zone.
- a machine as claimed in claim 1 including a scoring tool movable in the direction axially of said mandrel so as to score a groove in a coil supported on said mandrel.
- a process for the manufacture of annular metal rings comprising: connecting one end of a length of thin metal strip to a drive ring so that said length extends substantially tangentially of a mandrel disposed coaxially of said drive ring, rotating the drive ring to wind said strip edgewise into a helical coil on said mandrel, causing at least the portion of strip about to be wound into said coil to contact a stationary die face, applying pressure axially of said coil to compact said coil and to cause the said portion of strip to be gripped tightly between said die face and a portion of strip already wound into said coil, a flow of metal being produced in said portion as it is drawn across the die face, said flow of metal being such as to compensate for distortion of the strip produced by edgewise bending, whereby the faces of the strip wound to form turns of the coil are substantially parallel, relaxing said pressure, removing said coil from the mandrel, severing the coil to separate the individual turns, and securing together the ends of each of at least some of said severed turns 10.
- said guide path having a substantially straight entry section followed by an arcuate section which extends through part of one turn ofa helix about an axis.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Winding, Rewinding, Material Storage Devices (AREA)
- Wire Processing (AREA)
- Winding Of Webs (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2279569A GB1280331A (en) | 1969-05-05 | 1969-05-05 | Improvements in or relating to the manufacture of annular metal rings and part annular metal components |
Publications (1)
Publication Number | Publication Date |
---|---|
US3729968A true US3729968A (en) | 1973-05-01 |
Family
ID=10185183
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US3729968D Expired - Lifetime US3729968A (en) | 1969-05-05 | 1971-12-22 | Working of strip metal |
Country Status (14)
Country | Link |
---|---|
US (1) | US3729968A (ja) |
JP (1) | JPS5019517B1 (ja) |
BE (1) | BE749902A (ja) |
CA (1) | CA943747A (ja) |
CH (1) | CH532972A (ja) |
DE (1) | DE2021635C2 (ja) |
FR (1) | FR2042401B1 (ja) |
GB (1) | GB1280331A (ja) |
IE (1) | IE34704B1 (ja) |
IL (1) | IL34352A0 (ja) |
LU (1) | LU60831A1 (ja) |
MT (1) | MTP643B (ja) |
NL (1) | NL7006395A (ja) |
SE (1) | SE380745B (ja) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4112727A (en) * | 1977-04-01 | 1978-09-12 | Brown Marshall B | Method and apparatus for making pipe flanges |
US4131988A (en) * | 1976-10-29 | 1979-01-02 | The Globe Tool And Engineering Company | Method of manufacturing a dynamoelectric field member |
US4139141A (en) * | 1976-06-30 | 1979-02-13 | Aktiebolaget Platmanufaktur | Method and apparatus for manufacture of spirals without axle |
US4279277A (en) * | 1979-09-13 | 1981-07-21 | The Globe Tool & Engineering Company | Apparatus for manufacturing a dynamolelectric field member |
US4312387A (en) * | 1976-10-29 | 1982-01-26 | The Globe Tool And Engineering Company | Apparatus for making dynamoelectric field member |
WO1988010096A1 (en) * | 1987-06-15 | 1988-12-29 | Keravision, Inc. | Holder for inserting corneal curvature adjustment ring |
US6007015A (en) * | 1996-09-17 | 1999-12-28 | Matsushita Electric Works, Ltd. | Edgewise winding system for thin, flat-type conductor wire |
US6051023A (en) * | 1987-06-15 | 2000-04-18 | Keravision, Inc. | Corneal curvature adjustment ring and apparatus for making a cornea |
US6966927B1 (en) | 1992-08-07 | 2005-11-22 | Addition Technology, Inc. | Hybrid intrastromal corneal ring |
US20070075499A1 (en) * | 2005-09-28 | 2007-04-05 | Kaco Gmbh + Co. Kg | Housing for Seals, Preferably Radial Shaft Seals, and Method for Manufacturing such a Housing |
WO2010046069A2 (de) * | 2008-10-24 | 2010-04-29 | Ks Gleitlager Gmbh | Gleitlager |
US20130174402A1 (en) * | 2012-01-10 | 2013-07-11 | Soeren Juul Jensen | Generator assembly apparatus |
EP1979635B2 (en) † | 2006-02-01 | 2013-12-11 | Saint-Gobain Performance Plastics Corporation | Method of making shaped composites |
WO2016020294A1 (de) * | 2014-08-04 | 2016-02-11 | Adolf Schnorr Gmbh + Co. Kg | Verfahren zur herstellung einer bandfeder sowie biegeeinrichtung zu deren herstellung |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58110144A (ja) * | 1981-12-23 | 1983-06-30 | Hitachi Ltd | 大穴を持つ部品の製造方法 |
DE3400219A1 (de) * | 1984-01-05 | 1985-07-18 | Seeger-Orbis GmbH, 6240 Königstein | Verfahren zur herstellung von sicherungsringen |
DE3502028C1 (de) * | 1985-01-23 | 1986-04-17 | Goetze Ag, 5093 Burscheid | Verfahren und Vorrichtung zum Einführen und Anlegen von insbesondere Stahlbandringwickeln in oder auf Aufnahmekörpern |
JPH0841621A (ja) * | 1994-05-25 | 1996-02-13 | Aisin Seiki Co Ltd | 摩擦プレートの製造方法及びリング状摩擦プレートの製造方法 |
DE102008054242A1 (de) * | 2008-10-24 | 2010-01-21 | Ks Gleitlager Gmbh | Gleitlager |
CN104226850B (zh) * | 2014-09-19 | 2015-12-23 | 无锡太博泵业有限公司 | 圆套成型装置 |
CH710982A1 (de) * | 2015-04-17 | 2016-10-31 | Hatebur Umformmaschinen Ag | Ringwalzvorrichtung mit axial feststehenden Wälzlagern. |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US368569A (en) * | 1887-08-23 | Manufacture of conveyer-flights | ||
US561579A (en) * | 1896-06-09 | Of manchester | ||
US744671A (en) * | 1898-12-05 | 1903-11-17 | Gen Electric | Coil-forming apparatus. |
US825249A (en) * | 1903-01-24 | 1906-07-03 | Gen Electric | Coil-forming apparatus. |
US1156458A (en) * | 1915-01-23 | 1915-10-12 | George L Blanchard | Machine for manufacturing strip-saws. |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US978974A (en) * | 1910-03-15 | 1910-12-20 | Nat Lock Washer Co | Method of making steel spring-washers. |
US1107005A (en) * | 1914-06-30 | 1914-08-11 | Charles White | Apparatus for making piston packing-rings. |
US1215775A (en) * | 1916-07-13 | 1917-02-13 | St Louis Felling Machine Company | Method of making cylinder-rings. |
US1878233A (en) * | 1929-10-29 | 1932-09-20 | Griscom Russell Co | Coiling machine and method of winding coils |
-
1969
- 1969-05-05 GB GB2279569A patent/GB1280331A/en not_active Expired
-
1970
- 1970-04-20 IL IL34352A patent/IL34352A0/xx unknown
- 1970-04-29 IE IE549/70A patent/IE34704B1/xx unknown
- 1970-04-29 NL NL7006395A patent/NL7006395A/xx unknown
- 1970-04-30 LU LU60831D patent/LU60831A1/xx unknown
- 1970-04-30 CA CA081,495A patent/CA943747A/en not_active Expired
- 1970-04-30 CH CH657670A patent/CH532972A/de not_active IP Right Cessation
- 1970-05-02 MT MT643A patent/MTP643B/xx unknown
- 1970-05-02 DE DE2021635A patent/DE2021635C2/de not_active Expired
- 1970-05-04 BE BE749902D patent/BE749902A/xx unknown
- 1970-05-04 FR FR7016123A patent/FR2042401B1/fr not_active Expired
- 1970-05-04 JP JP3819970A patent/JPS5019517B1/ja active Pending
- 1970-05-04 SE SE606670A patent/SE380745B/xx unknown
-
1971
- 1971-12-22 US US3729968D patent/US3729968A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US368569A (en) * | 1887-08-23 | Manufacture of conveyer-flights | ||
US561579A (en) * | 1896-06-09 | Of manchester | ||
US744671A (en) * | 1898-12-05 | 1903-11-17 | Gen Electric | Coil-forming apparatus. |
US825249A (en) * | 1903-01-24 | 1906-07-03 | Gen Electric | Coil-forming apparatus. |
US1156458A (en) * | 1915-01-23 | 1915-10-12 | George L Blanchard | Machine for manufacturing strip-saws. |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4139141A (en) * | 1976-06-30 | 1979-02-13 | Aktiebolaget Platmanufaktur | Method and apparatus for manufacture of spirals without axle |
US4131988A (en) * | 1976-10-29 | 1979-01-02 | The Globe Tool And Engineering Company | Method of manufacturing a dynamoelectric field member |
US4312387A (en) * | 1976-10-29 | 1982-01-26 | The Globe Tool And Engineering Company | Apparatus for making dynamoelectric field member |
US4112727A (en) * | 1977-04-01 | 1978-09-12 | Brown Marshall B | Method and apparatus for making pipe flanges |
US4279277A (en) * | 1979-09-13 | 1981-07-21 | The Globe Tool & Engineering Company | Apparatus for manufacturing a dynamolelectric field member |
US6051023A (en) * | 1987-06-15 | 2000-04-18 | Keravision, Inc. | Corneal curvature adjustment ring and apparatus for making a cornea |
WO1988010096A1 (en) * | 1987-06-15 | 1988-12-29 | Keravision, Inc. | Holder for inserting corneal curvature adjustment ring |
US6966927B1 (en) | 1992-08-07 | 2005-11-22 | Addition Technology, Inc. | Hybrid intrastromal corneal ring |
US6007015A (en) * | 1996-09-17 | 1999-12-28 | Matsushita Electric Works, Ltd. | Edgewise winding system for thin, flat-type conductor wire |
US20070075499A1 (en) * | 2005-09-28 | 2007-04-05 | Kaco Gmbh + Co. Kg | Housing for Seals, Preferably Radial Shaft Seals, and Method for Manufacturing such a Housing |
EP1979635B2 (en) † | 2006-02-01 | 2013-12-11 | Saint-Gobain Performance Plastics Corporation | Method of making shaped composites |
WO2010046069A2 (de) * | 2008-10-24 | 2010-04-29 | Ks Gleitlager Gmbh | Gleitlager |
WO2010046069A3 (de) * | 2008-10-24 | 2010-06-24 | Ks Gleitlager Gmbh | Gleitlager |
US20130174402A1 (en) * | 2012-01-10 | 2013-07-11 | Soeren Juul Jensen | Generator assembly apparatus |
US9764434B2 (en) * | 2012-01-10 | 2017-09-19 | Siemens Aktiengesellschaft | Generator assembly apparatus |
WO2016020294A1 (de) * | 2014-08-04 | 2016-02-11 | Adolf Schnorr Gmbh + Co. Kg | Verfahren zur herstellung einer bandfeder sowie biegeeinrichtung zu deren herstellung |
CN106714995A (zh) * | 2014-08-04 | 2017-05-24 | 阿道夫施特尔公司 | 平面涡卷弹簧的生产方法及其生产用弯曲装置 |
US10661330B2 (en) | 2014-08-04 | 2020-05-26 | Adolf Schnorr Gmbh + Co. Kg | Method for producing a flat spiral spring, and bending device for producing same |
Also Published As
Publication number | Publication date |
---|---|
MTP643B (en) | 1970-09-11 |
DE2021635A1 (de) | 1970-11-12 |
IL34352A0 (en) | 1970-06-17 |
JPS5019517B1 (ja) | 1975-07-08 |
DE2021635C2 (de) | 1982-01-28 |
IE34704B1 (en) | 1975-07-23 |
FR2042401A1 (ja) | 1971-02-12 |
CH532972A (de) | 1973-01-31 |
LU60831A1 (ja) | 1970-07-01 |
FR2042401B1 (ja) | 1974-09-20 |
NL7006395A (ja) | 1970-11-09 |
SE380745B (sv) | 1975-11-17 |
IE34704L (en) | 1970-11-05 |
BE749902A (fr) | 1970-10-16 |
CA943747A (en) | 1974-03-19 |
GB1280331A (en) | 1972-07-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3729968A (en) | Working of strip metal | |
US4310939A (en) | Method of producing semicircular washers having a projection to prevent rotation | |
US4558577A (en) | Roll-forming machine for making articles having cross-sectional configurations varying lengthwise | |
CN100571924C (zh) | 螺旋叶片卷绕成型方法及成型设备 | |
DE112011100571T5 (de) | Verfahren zum Herstellen einer Radfelge für ein Fahrzeug | |
US3466907A (en) | Metal ribbon,welding electrodes and method and apparatus for forming same | |
US3540395A (en) | Method of slitting a continuous strip of metal and article formed therefrom | |
EP1420903B1 (de) | Verfahren und vorrichtung zum haspeln von dünnem metallband, insbesondere von warm- oder kaltgewalztem dünnen stahlband | |
CN110788175B (zh) | 一种待焊管材边缘直边的滚弯成形方法及装置 | |
US2201068A (en) | Manufacture of slide fasteners | |
US1916645A (en) | Method of and means for making curved pipe fittings | |
US4445354A (en) | Procedure and equipment for the manufacture of pipes with external and internal diameters varying in stages | |
US3503109A (en) | Method and apparatus for forming flange bearings | |
US1377266A (en) | Process for manufacturing metal rings | |
US3918283A (en) | Tubular articles and method of making same | |
US4151733A (en) | Method of producing thrust washers | |
US3500673A (en) | Turret head roll former | |
US2361318A (en) | Tube product | |
US4037446A (en) | Method of producing bright steel from rolled steel wire | |
US7334446B1 (en) | Method for producing a striplike pre-material made of metal, especially a pre-material which has been profiled into regularly reoccurring sections, and device therefor | |
US1968455A (en) | Method and apparatus for forming pipe | |
US2083698A (en) | Push bench method and apparatus | |
DE69606354T2 (de) | Vorrichtung und Verfahren zur Herstellung von geschweissten Stahlröhren | |
US3303679A (en) | Machine for coiling strip metal | |
JP3208818B2 (ja) | プレス用金型およびプレス方法 |