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GB1436544A - Methods of and apparatus for working sheet material - Google Patents

Methods of and apparatus for working sheet material

Info

Publication number
GB1436544A
GB1436544A GB2455672A GB2455672A GB1436544A GB 1436544 A GB1436544 A GB 1436544A GB 2455672 A GB2455672 A GB 2455672A GB 2455672 A GB2455672 A GB 2455672A GB 1436544 A GB1436544 A GB 1436544A
Authority
GB
United Kingdom
Prior art keywords
die
sheet
shoulder
shoulders
edge
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
Application number
GB2455672A
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.)
Smiths Group PLC
Original Assignee
Smiths Group PLC
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 Smiths Group PLC filed Critical Smiths Group PLC
Priority to GB2455672A priority Critical patent/GB1436544A/en
Priority to CH756373A priority patent/CH570248A5/xx
Publication of GB1436544A publication Critical patent/GB1436544A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • 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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/16—Shoulder or burr prevention, e.g. fine-blanking
    • 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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/18—Yieldable, e.g. rubber, punching pads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/40—Cutting-out; Stamping-out using a press, e.g. of the ram type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B26F2001/4436—Materials or surface treatments therefore
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B26F2001/4445—Matrices, female dies, creasing tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B26F2001/4472—Cutting edge section features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B26F2001/449—Cutters therefor; Dies therefor for shearing, e.g. with adjoining or abutting edges

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

1436544 Punching; making dies; stamping SMITHS INDUSTRIES Ltd 25 May 1973 [25 May 1972] 24556/72 Headings B3W B3A and B3Q [Also in Division B4] To sever sheet material 8, Fig. 1, such as metal, paper or plastics, a ram 5 forces the sheet against a die 4 and an adjacent shoulder 10 through an intermediate elastomeric pad 7 so that spaced parts of the sheet are firmly held while they are severed from each other by the edge 9 of the die. The pad may be surroundedby a wall 6. In an embodiment for shearing a perforated blank 35 from a sheet 26, Fig. 10, an annular die 20 is associated with shoulders 23 and 24. To form a small perforation a steel pin replaces the shoulder 24. The shoulders 10, 23 and 24 may each be of one piece construction and be integral with a backing plate 3. Alternatively, as shown, molten alloy may be poured into the annular space 12 between a steel ring 11 or 21 and the die 4 or 20 and the edge of the cooled alloy cut away. A eutectic alloy of zinc, tin and bismuth having a melting point of about 100‹ C. is specified. The upper surface of the shoulder may be slightly higher or lower than that of the die. The die may be shaped to form and shear a blank simultaneously.
GB2455672A 1972-05-25 1972-05-25 Methods of and apparatus for working sheet material Expired GB1436544A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2455672A GB1436544A (en) 1972-05-25 1972-05-25 Methods of and apparatus for working sheet material
CH756373A CH570248A5 (en) 1972-05-25 1973-05-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2455672A GB1436544A (en) 1972-05-25 1972-05-25 Methods of and apparatus for working sheet material

Publications (1)

Publication Number Publication Date
GB1436544A true GB1436544A (en) 1976-05-19

Family

ID=10213494

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2455672A Expired GB1436544A (en) 1972-05-25 1972-05-25 Methods of and apparatus for working sheet material

Country Status (2)

Country Link
CH (1) CH570248A5 (en)
GB (1) GB1436544A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1486302A1 (en) * 2004-08-17 2004-12-15 Blumer Maschinenbau Ag A die cutter for cutting a blank from a sheet of material
WO2015018587A1 (en) * 2013-08-08 2015-02-12 Bielomatik Leuze Gmbh + Co. Kg Transfer/punching process
CN119702855A (en) * 2025-02-25 2025-03-28 常州欧肯机械科技有限公司 Cutting die for outer shell of air outlet taper pipe of automobile engine exhaust system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2615421B1 (en) * 1987-05-22 1989-08-18 Isoform PROCESS FOR CUTTING THIN SHEETS, ESPECIALLY SHEET AND ELASTOMERIC MATERIAL FOR USE IN THIS PROCESS
JPH08323696A (en) * 1995-06-01 1996-12-10 Internatl Business Mach Corp <Ibm> Device for punching out of flexible die, and method to form opening using said device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1486302A1 (en) * 2004-08-17 2004-12-15 Blumer Maschinenbau Ag A die cutter for cutting a blank from a sheet of material
WO2015018587A1 (en) * 2013-08-08 2015-02-12 Bielomatik Leuze Gmbh + Co. Kg Transfer/punching process
CN105980116A (en) * 2013-08-08 2016-09-28 Bw碧罗马蒂克有限公司 Transfer/punching process
US9981398B2 (en) 2013-08-08 2018-05-29 Bw Papersystems Stuttgart Gmbh Transfer/punching process
CN119702855A (en) * 2025-02-25 2025-03-28 常州欧肯机械科技有限公司 Cutting die for outer shell of air outlet taper pipe of automobile engine exhaust system

Also Published As

Publication number Publication date
CH570248A5 (en) 1975-12-15

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee