US3783665A - Spinning machine - Google Patents

Spinning machine Download PDF

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Publication number
US3783665A
US3783665A US00276797A US3783665DA US3783665A US 3783665 A US3783665 A US 3783665A US 00276797 A US00276797 A US 00276797A US 3783665D A US3783665D A US 3783665DA US 3783665 A US3783665 A US 3783665A
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US
United States
Prior art keywords
roller
blank
work roll
product
spinning machine
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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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US00276797A
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English (en)
Inventor
Y Ashizawa
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.)
Shibaura Machine Co Ltd
Original Assignee
Toshiba Machine Co Ltd
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 Toshiba Machine Co Ltd filed Critical Toshiba Machine Co Ltd
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Publication of US3783665A publication Critical patent/US3783665A/en
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Expired - Lifetime legal-status Critical Current

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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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14—Spinning
    • B21D22/18—Spinning using tools guided to produce the required profile
    • B21D22/185—Spinning using tools guided to produce the required profile making domed objects

Definitions

  • ABSTRACT In a spinning machine for shaping a blank into a product of a desired configuration without using a metal mold, there are provided a rotary shaft, a push rod, the rotary shaft and push rod cooperating to clamp therebetween a flat plate shaped blank for rotating the same, a back-up roller having a peripheral contour conforming to a portion of the inside contour of a spinned product, means to urge the back-up roller against one side of the blank, means to move the back-up roller along a predetermined path conforming to the inside contour of the product, a work roll having a working edge of smaller radius of curvature than said back-up roller, means to urge the work roll against the opposite side of the blank with a predtermined definite axial spacing between the work roll and the back-up roller and means for moving the work roll to follow the movement of the back-up roller while maintaining the definite axial spacing with respect to the back-up roller.
  • FIG. 2 PRIOR ART K FIG. 2 ⁇ r V SPINNING MACHINE BACKGROUND OF THE INVENTION
  • This invention relates to a spinning machine, more particularly a shear spinning machine wherein a blank in the form of a metal plate is shaped into a product of the desired configuration by a shear spinning process while the blank is clamped between a work roll and a back-up roll.
  • a blank 1 in the form of a flat metal plate is clamped between a rotary mother mold 2 which is mounted on a headstock of a lath, not shown, and a push rod 3 which is mounted on the tailstock of the lath, not shown, so as to rotate the blank and the push rod 3 as the rotary mold is rotated.
  • a work roll 4 is moved from the center toward the periphery of the blank along the inclined surface of the mother mold, which in this case takes the form of a frustum of a'cone,
  • the work roll assumes a position indicated by 4a and the blank assumes a configuration as shown by 1a.
  • the work roll 4 is controlled such that the thickness ta of the product in the axial direction of the product or the lath will be equal to the thickness t, of the blank 1.
  • the material of the blank 1 is moved in parallel in the direction of the thickness of the blank by the shearing force so that the outer diameter of the product is equal to the diameter Do of'the blank.
  • stress is applied only in the direction of the thickness of the blank and no stress creates in the circumferential and radial directions.
  • a spinning machine comprising a rotary shaft, a push rod, the rotary shaft and push rod cooperating to clamp therebetween a flat plate shaped blank for rotating the same, a back-up roller having a peripheral contour conforming to a portion of the inside contour of a spinned product, means to urge the back-up roller against one side of the blank, means to move the back-up roller along a predetermined path conforming to the inside contour of the product, a work roll having a working edge of smaller radius of curvature than said back-up roller,
  • FIG. 1 is a diagram showing the principle of the construction and operation of the prior art spinning machine
  • FIG. 2 is a diagram showing the principle of the construction and operation of a spinning machine adapted to manufacture a frusto conical product
  • FIG. 3 is a diagram similar to FIG. 2 where a bowl shaped product is to be manufactured
  • Flg. 4 is a plan view showing the detail of the construction of the spinning machine shown in FIG. 2;
  • FIG. 5 is a plan view showing the detail of the construction of the spinning machine shown in FIG. 3 and FIG. 6 is a side elevation of a mechanism for moving the backup roller along a predetermined curved path.
  • FIG. 2 shows the principle of the construction and operation of the novel spinning machine adapted to shape a metal blank 1 into a frusto-conical product.
  • the central portion of the blank I haying a thickness of t is clamped between a push rod 3 mounted on a tailstock and a rotary shaft 6 mounted on a headstock of a lath as will be described later with reference to FIGS. 4 to 6, whereby the blank 1 is rotated together with a rotary shaft 6.
  • a freely rotatable back-up roller 5 which is moved along the inner contour of the product by a mechanism to be described later.
  • the work roll 4 is moved to follow the movement of the back-up roller 5 while maintaining a definite axial spacing therebetween.
  • the work roll 4 has a working edge of smaller radius of curvature than the back-up roller 5.
  • the positions of the work roll 4 and the back-up roller 5 at an intermediate point of the working are shown by 4a and 5a, respectively.
  • the axial thickness of the product la is indicated by t,,.
  • the back-up roller 5 In order to shape the blank 1 into the product lla by the shear spinning method the back-up roller 5 is positioned such that its generating surface assumes a straight line which is positioned at an angle 6 from the axis of rotation (angle 0 is equal to one half of the apex angle of a cone), the back-up roller 5 is moved while keeping angle 0, and the work roll 4 is moved to follow the movement of the back-up roller 5 while maintaining the constant axial spacing therebetween which is equal to the original thickness to of the blank.
  • FIG. 3 is a diagram illustrating a modified embodiment of the invention in which a flat metal bank 1 is shaped into a product of a bowl or hemispherical shape.
  • the surface generating of the backup roller is made to extend along an are having a radious R, and the backup roller 5 is moved along this are.
  • the work roll 4 is moved to follow the arcuate movement of the back-up roller such that the axial spacing equal to the thickness to of the blank is always maintained between the work roll 4 and the follow-up roller 5 during the spinning operation.
  • the blank 1 clamped between the rotary shaft 6 and the push rod 3 is worked into a bowl with an inner surface having a radius of curvature of R.
  • the invention provides a novel spinning machine which can shape a blank into a product of a desired configuration without using any expensive metal mould by only one pass of-short time and of very simple operation, thus saving the time and cost of manufacturing.
  • FIG. 4 shows a plan view of a spinning machine for carrying out the spinning operation outlined in connection with FIG. 2.
  • the push rod 3 is mounted on a tailstock 13 of a lath and the rotary shaft 6 is mounted on a headstock l4 rotated by an electric motor 15.
  • Work roll 4 and back-up roller 5 are mounted on cross-slides l1 and 11a, respectively, through supports 7 and 7a and clamps 8 and 8a.
  • the slides 11 and 11a are operated by piston-cylinder assemblies 12 and 120, respectively, and are secured to saddles 9 and 9a which are slidably mounted on a common bed 10 which in turn is adjustable along guide grooves 25.
  • bed 10 is set to the position shown in FIG. 4. This can be readily accomplished by laterally moving the bed 10 along guide grooves 25 and by rotating a base plate (not shown) which supports the entire assembly of bed 10, saddles 9, 9a and guide grooves 25 about a pivot shaft 30.
  • the piston-cylinder assemblies 12 and 120 are operated to bring work roll 4 and backup roller 5 on the opposite sides of the blank 1.
  • cross-slides 11 and 11a are fixed to the saddles 9 and 9a to maintain work roll 4 and backup roller 5 at a given spacing equal to the thickness of the blank.
  • driving motor 15 is energized to rotate the blank 1, and saddles 9 and 9a are concurrently moved on bed 10 causing the work roll and back-up roller to travel toward the periphery of the workpiece thereby spinning the blank 1 into a frusto-conical product. Since work-roll 4 and back-up roller 5 are maintained at a definite axial spacing during the spinning operation the axial thickness of the product at any point thereof is equal to the original thickness of the blank. In other words, the blank is subjected to a shear spinning operation so that any stress will not be created in the product in the circumferential and radial directions.
  • saddles 9 and 9a which support cross slides 11 and 11a and piston cylinder-assemblies 12 and 120 are slidably mounted on bed 10 in the same manner as in the previous embodiment.
  • the back-up roller 5 is mounted on a bracket 16 which is guided to move along a curved guide groove 24 ofa guide block by means of rollers 17 (only one of them is seen in FIG. 6) mounted on the underside of bracket 16 to be received in groove 24.
  • Guide block 20 is supported by a pedestal 19 as shown in FIG. 6.
  • the groove 24 and the peripheral surface of back-up roller 5 are shaped to have the same radius of curvature R as the inner wall of the product.
  • the piston-cylinder assembly 120 is connected to bracket 16 through pins 22 and 23 and links 21 and 7a so that when saddle 9a is moved in the longitudinal direction of bed 10, the bracket 16 and hence back-up roller 5 are moved along curved groove 24.
  • to carry out the shear spinning operation it is necessary to maintain the work roll and the back-up roller always at a constant axial spacing which is equal to the original thickness of the blank.
  • the back-up roller 5 is moved always along a predetermined curved path, that is guide groove 24, it is necessary to cause the work roll 4 to follow the movement of the back-up roller while maintaining the constant axial spacing.
  • the work roll 4 is shown as directly mounted on the outer end of support 7, it should be understood that, a mechanism including a guide groove and a bracket identical to those described above is also provided for work roll 4 so as to cause it to move along a curved path.
  • the curvatures of the work roll 4 and back-up roller 5 are the same as that of guide groove 24.
  • bed 10 To manufacture a bowl shaped product, bed 10, saddles 9 and 9a and cross-slides l1 and 11a are brought to the positions shown in FIG. 5, thereby bringing work roll 4 and back-up roller 5 to their initial positions. Then, the saddles 9 and 9a are moved downwardly to move work roll 4 and the back-up roller 5 toward the periphery of the workpiece, along a predetermined curved path conforming to the contour of the product.
  • the work roll and backup roller are moved along a predetermined curved path by using a guide block having a curved guide groove
  • a predetermined path can be provided by a well known profile control, digital control or program control.
  • a program representing the predetermined path is stored in an electronic computor to generate command signals for moving the work roll and back-up roll along the predetermined path.
  • these work roll and back-up roller may be moved in unison by means of a single mechanism.
  • a spinning machine comprising a rotary shaft, a push rod, said rotary shaft and said push rod cooperating to clamp therebetween a flap plate shaped blank for i rotating the same, a back-up roller having a peripheral contour conforming to a portion of the inside contour of a spinned product, means to urge said back-up roller against one side of said blank, means to move said back-up roller along a predetermined path conforming to the inside contour of said product, a work roll having a working edge of smaller radius of curvature than said back-up roller, means to urge said work roll against the opposite side of said blank, means for maintaining a predetermined definite spacing between said work roll and said back-up roller while they are moved from the center of said blank to the outer edge thereof, said spacing being equal to the thickness of said blank as measured in the axial direction of said spinning machine, and means for moving said work roll to follow the movement of said back-up roller while maintaining said definite spacing said respect to said back-up roller, thereby shaping said blank into the product of the final tion substantially per
  • said means for moving said back-up roller along a predetermined path includes a stationary block having a curved groove of the shape conforming to the inside contour of the shaped product and means guided by said curved groove to move said back-up roller.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
US00276797A 1971-08-11 1972-07-31 Spinning machine Expired - Lifetime US3783665A (en)

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JP46060768A JPS5134381B2 (es) 1971-08-11 1971-08-11

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5426964A (en) * 1992-10-19 1995-06-27 Zeppelin-Metallwerke Gmbh Method & apparatus for shaping a sheet blank
CN100340355C (zh) * 2005-12-16 2007-10-03 华南理工大学 一种多工序集成旋压成形机床
US20100139350A1 (en) * 2004-02-17 2010-06-10 Smith Gregory S Methods and apparatus for controlling flare in roll-forming processes
CN105382073A (zh) * 2010-10-01 2016-03-09 剑桥企业有限公司 旋压成形工艺及用于通过旋压成形来制造物品的装置
CN106180341A (zh) * 2016-09-06 2016-12-07 哈尔滨工业大学 一种用于大型薄壁筒形件对轮旋压设备的内旋进给装置
CN106552859A (zh) * 2016-12-03 2017-04-05 温州市力博电子有限公司 一种绕回式冲压模具及其加工工件的方法
GB2568857A (en) * 2017-09-05 2019-06-05 Nissan Motor Mfg Uk Ltd Method of toolpath generation for a spin forming process
US20190388949A1 (en) * 2016-03-30 2019-12-26 Wf-Maschinenbau U. Blechformtechnik Gmbh & Co. Kg. Method for producing a moulded body comprising a hub and device for carrying out the method
FR3083463A1 (fr) * 2018-07-03 2020-01-10 Tusas Motor Sanayii Anonim Sirketi Machine de formation de plastique symétrique et non symétrique en rotation
WO2023280454A1 (de) * 2021-07-09 2023-01-12 Hsp Schwahlen Gmbh Verfahren und vorrichtung zur herstellung eines wälzlagerkäfigs aus einem hülsenförmigen rohling
US11745242B2 (en) 2018-09-21 2023-09-05 The Bradbury Co., Inc. Machines to roll-form variable component geometries
US11919060B2 (en) 2021-08-16 2024-03-05 The Bradbury Co., Inc. Methods and apparatus to control roll-forming processes

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2472462A1 (fr) * 1979-12-26 1981-07-03 Mezogep Machine a emboutir le metal comprenant deux rouleaux
JP6896224B2 (ja) * 2017-05-24 2021-06-30 日産自動車株式会社 逐次成形方法及び逐次成形装置
CN111299976A (zh) * 2020-03-17 2020-06-19 三能器具（无锡）有限公司 一种花嘴旋压粗坯半成品加工方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US426235A (en) * 1890-04-22 Machine for spinning irregular forms
US2069198A (en) * 1933-10-19 1937-02-02 Charles B Cushwa Apparatus for making dished heads
US3168919A (en) * 1962-08-13 1965-02-09 Union Ind Company Division Of Flanging machines
US3372567A (en) * 1965-09-16 1968-03-12 Lukens Steel Co Spinning machine and method
US3427846A (en) * 1966-05-16 1969-02-18 Technoimpex Magyar Gepipari Ku Hydraulic metal press
US3548622A (en) * 1968-07-08 1970-12-22 Blue Valley Machine & Mfg Co Metal plate flanging apparatus
US3580025A (en) * 1968-08-24 1971-05-25 Yasutoshi Hayashi End plate forming apparatus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US426235A (en) * 1890-04-22 Machine for spinning irregular forms
US2069198A (en) * 1933-10-19 1937-02-02 Charles B Cushwa Apparatus for making dished heads
US3168919A (en) * 1962-08-13 1965-02-09 Union Ind Company Division Of Flanging machines
US3372567A (en) * 1965-09-16 1968-03-12 Lukens Steel Co Spinning machine and method
US3427846A (en) * 1966-05-16 1969-02-18 Technoimpex Magyar Gepipari Ku Hydraulic metal press
US3548622A (en) * 1968-07-08 1970-12-22 Blue Valley Machine & Mfg Co Metal plate flanging apparatus
US3580025A (en) * 1968-08-24 1971-05-25 Yasutoshi Hayashi End plate forming apparatus

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5426964A (en) * 1992-10-19 1995-06-27 Zeppelin-Metallwerke Gmbh Method & apparatus for shaping a sheet blank
US9370813B2 (en) 2004-02-17 2016-06-21 The Bradbury Company, Inc. Methods and apparatus for controlling flare in roll-forming processes
US20100139350A1 (en) * 2004-02-17 2010-06-10 Smith Gregory S Methods and apparatus for controlling flare in roll-forming processes
US8453485B2 (en) * 2004-02-17 2013-06-04 The Bradbury Company, Inc. Methods and apparatus for controlling flare in roll-forming processes
CN100340355C (zh) * 2005-12-16 2007-10-03 华南理工大学 一种多工序集成旋压成形机床
AU2010214719B2 (en) * 2009-08-31 2016-03-17 The Bradbury Company, Inc. Methods and Apparatus for Controlling Flare in Roll-Forming Processes
US9597721B2 (en) * 2010-10-01 2017-03-21 Cambridge Enterprise Limited Spin forming process and apparatus for manufacturing articles by spin forming
CN105382073A (zh) * 2010-10-01 2016-03-09 剑桥企业有限公司 旋压成形工艺及用于通过旋压成形来制造物品的装置
US20190388949A1 (en) * 2016-03-30 2019-12-26 Wf-Maschinenbau U. Blechformtechnik Gmbh & Co. Kg. Method for producing a moulded body comprising a hub and device for carrying out the method
US11020784B2 (en) * 2016-03-30 2021-06-01 Wf-Maschinenbau U. Blechformtechnik Gmbh & Co. Kg Method for producing a moulded body comprising a hub and device for carrying out the method
CN106180341A (zh) * 2016-09-06 2016-12-07 哈尔滨工业大学 一种用于大型薄壁筒形件对轮旋压设备的内旋进给装置
CN106552859A (zh) * 2016-12-03 2017-04-05 温州市力博电子有限公司 一种绕回式冲压模具及其加工工件的方法
GB2568857A (en) * 2017-09-05 2019-06-05 Nissan Motor Mfg Uk Ltd Method of toolpath generation for a spin forming process
GB2568857B (en) * 2017-09-05 2020-12-30 Nissan Motor Mfg Uk Ltd Method of toolpath generation for a spin forming process
FR3083463A1 (fr) * 2018-07-03 2020-01-10 Tusas Motor Sanayii Anonim Sirketi Machine de formation de plastique symétrique et non symétrique en rotation
US11745242B2 (en) 2018-09-21 2023-09-05 The Bradbury Co., Inc. Machines to roll-form variable component geometries
WO2023280454A1 (de) * 2021-07-09 2023-01-12 Hsp Schwahlen Gmbh Verfahren und vorrichtung zur herstellung eines wälzlagerkäfigs aus einem hülsenförmigen rohling
US11919060B2 (en) 2021-08-16 2024-03-05 The Bradbury Co., Inc. Methods and apparatus to control roll-forming processes

Also Published As

Publication number Publication date
DE2239182A1 (de) 1973-02-22
JPS5134381B2 (es) 1976-09-25
JPS4826666A (es) 1973-04-07

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