US3905217A - Apparatus for producing an annular corrugated spring - Google Patents

Apparatus for producing an annular corrugated spring Download PDF

Info

Publication number
US3905217A
US3905217A US421764A US42176473A US3905217A US 3905217 A US3905217 A US 3905217A US 421764 A US421764 A US 421764A US 42176473 A US42176473 A US 42176473A US 3905217 A US3905217 A US 3905217A
Authority
US
United States
Prior art keywords
blank
rollers
spring
accordance
curvature
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
US421764A
Other languages
English (en)
Inventor
Hiroshi Mino
Tadashi Sasatani
Tadaki Kobayashi
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.)
Mazda Motor Corp
Original Assignee
Toyo Kogyo 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 Toyo Kogyo Co Ltd filed Critical Toyo Kogyo Co Ltd
Application granted granted Critical
Publication of US3905217A publication Critical patent/US3905217A/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
    • 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
    • B21D53/20—Making other particular articles rings, e.g. barrel hoops washers, e.g. for sealing

Definitions

  • An apparatus for continuously producing an annular corrugated spring said apparatus having forming roller means including a plurality of pairs of forming rollers for applying to an elongated band-like spring blank a predetermined radius of curvature in the plane of the blank to provide a circular form therein, means including a pair of co-operating waved rollers having complementarily waved contours for applying corrugated configuration to the blank passing through the rollers, and means for cutting the corrugated blank at a predetermined position to provide an annular corrugated spring.
  • the present invention relates to an apparatus for producing an annular corrugated spring. More particularly, the present invention relates to an apparatus for producing an annular corrugated spring from an elongated flat blank material.
  • annular oil seal rings are disposed between the side surfaces of the rotor and the adjacent inner surfaces of the casing.
  • the rotor is provided in the side surfaces with annular grooves for receiving such oil seals.
  • annular corrugated spring is disposed behind each of the oil sealrings.
  • annular corrugated spring has been produced by separate steps of press forming an elongated band-like blank into a plane annular ring and thereafter applying a corrugated form.
  • the conventional process is disadvantageous in that it is time-consuming and requires an increased production cost.
  • the corrugated form is applied through a pressing operation, substantial deformation is produced after heat treatment due to non-uniform distribution of residual stress.
  • the present invention has an object to provide an apparatus which can continuously perform the steps of forming an elongated band-like spring blank into a plane annular shape and then applying a corrugated form to the blank to form an annular corrugated spring.
  • Another object of the present invention is to provide an apparatus which can produce an annular corrugated spring having uniform distribution of residual stress.
  • a further object of the present invention is to provide an apparatus in which an elongated band-like spring blank is applied with a uniform radius of curvature in the plane of the blank.
  • Still further object of the present invention is to provide novel means for cutting a formed spring blank to provide a substantially annular spring and at the same time forming the cut end of the spring.
  • an apparatus comprising forming roller means including a plurality of pairs of forming rollers for applying to an elongated band-like spring blank a predetermined radius of curvature in the plane of the blank to provide a circular form therein, means including a pair of co-operatingwaved rollers having complementarily waved contours for applying cormgated configuration to the blank passing through the rollers, and means for cutting the corrugated blank at a predetermined position to provide an annular corrugated spring.
  • the forming rollers comprise a plurality of outboard rollers having stationary axes and corresponding number of inboard rollers which are resiliently urged to the outboard rollers for cooperation therewith.
  • the cutting means should preferably be mounted in the apparatus so that it is moved along the path of the formed blank at a speed synchronized with the feeding speed of the blank. It is further preferable that the cutting means is also provided with means for shaping the cut end of the blank.
  • FIG.- 4 is a sectional view taken substantially along the line IV-IV in FIG. 2;
  • FIG. 5 is an enlarged perspective view of waved roller means used in the apparatus shown in FIG. 1;
  • FIG. 6 is an enlarged perspective view of cutting means
  • FIG. 7 is a perspectiveview of an annular corrugated spring
  • FIG. 8 is an enlarged elevational view of forming rollers.
  • an apparatus for producing an annular corrugated spring C which is, as shown in FIG. 7, circular but waved or corrugated as designated by B in the direction perpendicular to the plane of circle.
  • the apparatus comprises a plane circle forming section 1 for applying a predetermined radius of curvature to an elongated ribbon-like spring blank A in the plane of the ribbon, a wave forming section 2 for applying the waved or corrugated configuration to the blank, and cutting means 3 for cutting the blank to a predetermined length so as to obtain an annular corrugated spring C as shown in FIG. 7.
  • the plane circle forming section 1 includes a plurality (four in the case of the illustrated embodiment) of outboard forming rollers 4a, 4b, 4c and 4d, and inboard forming rollers 5a and 5b which co-operate with the outboard rollers 4b and 40, respectively.
  • the rollers 4a, 4b and 4c are rotatably supported on the frame of the apparatus and the roller 4d is mounted on an arm 7 which is swingable about the axis of the roller 40.
  • the arm 7 has an upward extension 7a which is provided with an internally threaded hole for engagement with a radius adjusting screw 8.
  • the screw Sis rotatably but axially immovably mounted on the frame of the apparatus.
  • the forming rollers 5a and 5b are supported by a swingable lever 9 which is rotatably mounted at its intermediate portion on an end of a swingable arm 11.
  • the arm 11 is pivotably mounted at its intermediate portion by a shaft 10 on theframe.
  • a spring 12 is disposed to act on the other end of the arm 1 1 so as to bias it in the clockwise direction.
  • An adjusting screw 13 is combined with the spring 12 so as to adjust the bias force of the spring.
  • the forming roller 4b has circumferential groove 4' for receiving one of side edges of the blank A.
  • the roller 5a co-operating with the roller 4b has a smooth surface which engages with the other side edge of the blank A.
  • the rollers 4a, 40 and 4d have the same configuration as the roller 4b and the roller 5b has the same configuration as the roller 5a, so that they will not be described in detail.
  • the rollers 4a, 4b and 4c are provided with gears G1 1, G and G respectively and the gears G and G are driven by a drive shaft 25 through gears G G G G G and G so as to positively drive the rollers 4b and 4c.
  • the rotation of the gear 6, is transmitted to the gear G through a gear G so that the roller 4a is also positively driven.
  • the roller 4a serves to guide the blank A between the rollers 4b and 5a, and the blank A is applied with a predetermined radius of curvature in the plane of the blank as it is passed through the path between the rollers 4b, 4c and 5a, 5b.
  • the radius of curvature can be determined by the position of the roller 4d which is adjustable through rotation of the screw 8.
  • the wave forming section 2 comprises a pair of rollers 2a and 2b having complementarily waved contours as shown in FIG. 5.
  • the rollers 2a and 2b are driven in the same direction by the drive shaft 25 through gears G and G which mesh with the gears G and G As the circularly curved blank A is passed through the rollers 2a and 2b, a corrugation or waved form is applied to the blank A.
  • the cutting means 21 comprises a swingable casing 21 mounted rotatably at one end of a rotatable shaft 20 which is driven through gears G G G and G
  • a pair of end forming dies 15 and 16 which have co-operating spring end forming portions.
  • the dies 15 and 16 are also provided with shearing edges for co-operation with a cutting punch member 18' which is slidable along the end surfaces of the dies.
  • a leaf spring 22 is disposed between the punch member 18 and the die 15 and a weaker spring 22 is disposed between the dies 15 and 16.
  • a swingable actuating lever 19 is provided on the casing 21 and acts on the punch member 18 to force it into cutting operation.
  • the casing 21 is connected through a crank mechanism 24 with a drive shaft 26 which is driven by a gear 16 so that the casing 21 is reciprocatingly swung through the angular distance D shown in FIG. 1.
  • the shaft has a cam 23 mounted on one end thereof for co-operation with the lever 19.
  • the cam 23 and the lever 19 is forced rightwardly as seen in FIG. 2 to actuate the punch member 18.
  • the spring 22 is deflected and the dies 15 and 16 are closed to form the blank A as shown by E in FIG. 6.
  • the spring 22 is deflected so that the member 18 is allowed to move to a position to cut the blank A.
  • the casing 21 carrying the cutting mechanism is moved along the circular path of the blank by the crank mechanism 24 in synchronism with the movement of the blank when the cutting operation is performed, so that the blank can be cut without any local deformation.
  • An apparatus for producing an annular corrugated spring from an elongated flat blank comprising forming roller means including a plurality of pairs of forming rollers for applying to an elongated band-like spring blank with flat faces a predetermined radius of curvature to provide a circular formed blank with the faces of the blank normal to the radius of curvature, means including a pair of co-operating waved rollers having complementary waved contours for applying a corrugated configuration to the circular formed blank passing'through the rollers to provide a circular formed corrugated blank with the corrugations being defined inwardly and outwardly of the mean periphery of the blank, and cutting means for cutting the circular formed corrugated blank at a predetermined position to provide an annular corrugated spring.
  • said forming roller means include a first set of rollers having stationary axes and a second set of rollers which are resiliently urged to the first set of rollers for cooperation therewith.
  • An apparatus in accordance with claim 2 which further includes a third roller which is adjustable in posaid moving means includes a swingable member which is reciprocatingly swung in synchronism with the movement of the blank.
  • An apparatus in accordance with claim 7 further including means for, actuating the cutting means when it is moved in the direction of movement of the blank.
  • Method for producing an annular corrugated spring from an elongated flat blank comprising the steps of forming an elongated band-like spring blank having flat faces with a predetermined radius of curvature into a circular formed blank with the faces of the blank normal to the radius of curvature, and corrugating the circular formed blank to deform portions thereof inwardly and outwardly of the mean periphery of the blank.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Springs (AREA)
US421764A 1972-12-08 1973-12-05 Apparatus for producing an annular corrugated spring Expired - Lifetime US3905217A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12379872A JPS535628B2 (OSRAM) 1972-12-08 1972-12-08

Publications (1)

Publication Number Publication Date
US3905217A true US3905217A (en) 1975-09-16

Family

ID=14869560

Family Applications (1)

Application Number Title Priority Date Filing Date
US421764A Expired - Lifetime US3905217A (en) 1972-12-08 1973-12-05 Apparatus for producing an annular corrugated spring

Country Status (3)

Country Link
US (1) US3905217A (OSRAM)
JP (1) JPS535628B2 (OSRAM)
DE (1) DE2361161C3 (OSRAM)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112756519A (zh) * 2021-01-29 2021-05-07 河南科技大学 一种弹簧的非卷制成形锻压模具及成形方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2506648A1 (fr) * 1981-05-27 1982-12-03 Defontaine Sa Procede et installation pour la fabrication de couronnes de demarreurs pour moteurs
CN103586375B (zh) * 2013-10-16 2015-08-12 浙江英科弹簧有限公司 波形弹簧加工系统及加工方法
CN111438293A (zh) * 2020-04-14 2020-07-24 贵州航天林泉电机有限公司 一种可调式波形垫圈成型装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2206068A (en) * 1936-08-28 1940-07-02 Carl M Yoder Machine for producing shapes
US2243351A (en) * 1939-08-23 1941-05-27 Edward N Lowry Ring forming machine
US2794477A (en) * 1953-02-05 1957-06-04 Curt H K Sjobohm Method and apparatus for making coiled springs
US3284880A (en) * 1963-07-29 1966-11-15 Gould National Batteries Inc Method of making an expander

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2206068A (en) * 1936-08-28 1940-07-02 Carl M Yoder Machine for producing shapes
US2243351A (en) * 1939-08-23 1941-05-27 Edward N Lowry Ring forming machine
US2794477A (en) * 1953-02-05 1957-06-04 Curt H K Sjobohm Method and apparatus for making coiled springs
US3284880A (en) * 1963-07-29 1966-11-15 Gould National Batteries Inc Method of making an expander

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112756519A (zh) * 2021-01-29 2021-05-07 河南科技大学 一种弹簧的非卷制成形锻压模具及成形方法

Also Published As

Publication number Publication date
DE2361161A1 (de) 1974-06-20
DE2361161C3 (de) 1978-07-20
JPS535628B2 (OSRAM) 1978-03-01
JPS4979364A (OSRAM) 1974-07-31
DE2361161B2 (de) 1977-11-17

Similar Documents

Publication Publication Date Title
US4615207A (en) Progressive metal mold apparatus for production of laminated iron cores
AU605991B2 (en) Rotary cutter for cutting a continuous corrugated strip
GB1466458A (en) Method of producing a rotary member such as a v-pulley
US3905217A (en) Apparatus for producing an annular corrugated spring
US4247970A (en) Apparatus for forming expanded metal such as battery grids
US4351175A (en) Method of manufacturing an arc-like formed product and equipment for carrying out the method
JPS5831256B2 (ja) 金属リングのロ−ル成形方法および装置
WO2003051589A1 (en) Helical rotary drum shears
US5535583A (en) Method of faceting a hollow rope chain
US4132106A (en) Method for bending wire or strip material into round parts
US4318319A (en) Sealing ring and method and apparatus for making same
DE2201836B2 (de) Teigformmaschine
JPS598454B2 (ja) 鋼製シ−ルリングの成形加工装置
US2047001A (en) Apparatus for making foraminous elements
US5611235A (en) Power distribution mechanism in a stamping and forming machine and method
SU1199364A1 (ru) Устройство дл последовательной штамповки
SU1563808A1 (ru) Устройство дл изготовлени из ленты гофрированных деталей кольцевой формы
KR20050032451A (ko) 이형스트립의 제조방법 및 장치
SU559752A1 (ru) Устройство дл изготовлени обшивок двойной кривизны
SU766724A1 (ru) Валок дл изготовлени панелей с продольными и поперечными ребрами
US3238853A (en) Sheet material forming apparatus
SU617145A1 (ru) Устройство дл изготовлени профильных изделий
RU2341347C2 (ru) Способ изготовления шевронного заполнителя и устройство для его осуществления
US1724847A (en) Apparatus for making chain
SU1140329A1 (ru) Устройство дл изготовлени профилей из змеевидной заготовки