US3513681A - Means for performing an extrusion process in a cold forging press - Google Patents

Means for performing an extrusion process in a cold forging press Download PDF

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Publication number
US3513681A
US3513681A US675086A US3513681DA US3513681A US 3513681 A US3513681 A US 3513681A US 675086 A US675086 A US 675086A US 3513681D A US3513681D A US 3513681DA US 3513681 A US3513681 A US 3513681A
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US
United States
Prior art keywords
matrix
cold forging
forging press
extrusion process
forging
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
US675086A
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English (en)
Inventor
Eskil Monestam
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.)
ABB Norden Holding AB
Original Assignee
ASEA AB
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 ASEA AB filed Critical ASEA AB
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Publication of US3513681A publication Critical patent/US3513681A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C27/00—Containers for metal to be extruded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
    • B21C35/02—Removing or drawing-off work

Definitions

  • a device according to the invention is characterised in that said conicity is achieved narrowing in the pressing.
  • FIG. 1 and FIG. 2 show the device in longitudinal section, FIG. 1 showing the device in the final stage of forging and FIG. 2 during expulsion of the forging.
  • the matrix 1 is externally conical and fits into an annular body 2 which is pre-stressed in the pressure cylinder 3 of the tool.
  • the matrix will be pressed down until it stops against a ring 4 above the pressureequalising plate 5 and is thus, due with the external cone, compressed to suitable radial pre-stressing.
  • This is chosen so that when the matrix during expulsion moves upwards out of the cone, the radial expansion of the matrix will be sufliciently great for its grip on the extruded detail to cease.
  • the pressure of the matrix on the final object is eliminated as desired.
  • the matrix 1 is prevented from rising too high during expulsion since a stop on this matrix stops against the ring 4 which is manu factured in parts to enable it to be mounted.
  • the system may also be designed so that the lining 6 of the moulding space is also provided with sloping surfaces so that the pre-stressing of the lining ceases when it is moved upwardly. In this way even the unextruded part of the forging 7 can be pushed out under such conditions that no pressure, or only moderate pressure, is exerted against the wall of the moulding space.
  • Means for performing extmsions in a cold forging press comprising means forming a pressure chamber, and a matrix with external conicity arranged at the bottom of said pressure chamber, the pressure chamber forming means including an annular body into which said matrix can enter, said annular body having strong prestressing and being shaped with an internal conicity corresponding to the external conicity of the matrix, said matrix decreasing in cross-section in the pressing direction, and said pressure chamber forming means and said matrix having cooperating projection and recess means for allowing limited movement of the matrix within a certain range with respect to the pressure chamber forming means under the influence of an expelling force transmitted from forging to the matrix.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
US675086A 1966-10-13 1967-10-13 Means for performing an extrusion process in a cold forging press Expired - Lifetime US3513681A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE13867/66A SE343222B (de) 1966-10-13 1966-10-13

Publications (1)

Publication Number Publication Date
US3513681A true US3513681A (en) 1970-05-26

Family

ID=20298136

Family Applications (1)

Application Number Title Priority Date Filing Date
US675086A Expired - Lifetime US3513681A (en) 1966-10-13 1967-10-13 Means for performing an extrusion process in a cold forging press

Country Status (4)

Country Link
US (1) US3513681A (de)
DE (1) DE1602228C3 (de)
GB (1) GB1192594A (de)
SE (1) SE343222B (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3630064A (en) * 1969-10-20 1971-12-28 Aluminum Co Of America Flexing die member for indirect extrusion
US3731519A (en) * 1971-07-29 1973-05-08 Aluminum Co Of America Two piece flexing die holder
CN100467910C (zh) * 2007-04-28 2009-03-11 西安交通大学 卧式双动冷挤压机传动机构的设计方法
CN105903777A (zh) * 2016-06-30 2016-08-31 河南均美铝业有限公司 一种挤压机
CN107282670A (zh) * 2017-05-16 2017-10-24 中国航发北京航空材料研究院 一种涡轮盘高温合金铸锭的挤压开坯方法
CN112916781A (zh) * 2021-01-25 2021-06-08 兴三星云科技有限公司 克制不锈钢板材冷镦挤压形变的模具及工艺

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1379717A (en) * 1920-05-10 1921-05-31 Said Parsons Die
US2389876A (en) * 1944-06-02 1945-11-27 Sequin Carl Apparatus for making blades for turbomachines
US2860775A (en) * 1954-10-05 1958-11-18 Charles A Brauchler Split die and container for extrusion press

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1379717A (en) * 1920-05-10 1921-05-31 Said Parsons Die
US2389876A (en) * 1944-06-02 1945-11-27 Sequin Carl Apparatus for making blades for turbomachines
US2860775A (en) * 1954-10-05 1958-11-18 Charles A Brauchler Split die and container for extrusion press

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3630064A (en) * 1969-10-20 1971-12-28 Aluminum Co Of America Flexing die member for indirect extrusion
US3731519A (en) * 1971-07-29 1973-05-08 Aluminum Co Of America Two piece flexing die holder
CN100467910C (zh) * 2007-04-28 2009-03-11 西安交通大学 卧式双动冷挤压机传动机构的设计方法
CN105903777A (zh) * 2016-06-30 2016-08-31 河南均美铝业有限公司 一种挤压机
CN107282670A (zh) * 2017-05-16 2017-10-24 中国航发北京航空材料研究院 一种涡轮盘高温合金铸锭的挤压开坯方法
CN112916781A (zh) * 2021-01-25 2021-06-08 兴三星云科技有限公司 克制不锈钢板材冷镦挤压形变的模具及工艺

Also Published As

Publication number Publication date
SE343222B (de) 1972-03-06
DE1602228B2 (de) 1974-05-16
DE1602228C3 (de) 1974-12-19
DE1602228A1 (de) 1970-04-09
GB1192594A (en) 1970-05-20

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