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US1713962A - Collapsible draw mandrel - Google Patents

Collapsible draw mandrel Download PDF

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Publication number
US1713962A
US1713962A US163133A US16313327A US1713962A US 1713962 A US1713962 A US 1713962A US 163133 A US163133 A US 163133A US 16313327 A US16313327 A US 16313327A US 1713962 A US1713962 A US 1713962A
Authority
US
United States
Prior art keywords
mandrel
collapsible
collapsible draw
middle member
draw mandrel
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
US163133A
Inventor
Grossweischede Julius
Reichenbecher Georg
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.)
Vereinigte Stahlwerke AG
Original Assignee
Vereinigte Stahlwerke AG
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
Priority to DE1925521448D priority Critical patent/DE521448C/en
Application filed by Vereinigte Stahlwerke AG filed Critical Vereinigte Stahlwerke AG
Priority to US163133A priority patent/US1713962A/en
Application granted granted Critical
Publication of US1713962A publication Critical patent/US1713962A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, wire, rods, tubes or like semi-manufactured products by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes
    • B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes specially adapted for making tubular articles
    • B21C1/24—Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes specially adapted for making tubular articles by means of mandrels
    • B21C1/26—Push-bench drawing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels for metal drawing
    • B21C3/16—Mandrels; Mounting or adjusting same

Definitions

  • This invention relates to an improved draw-mandrel of the collapsible type, for use in connection with a hot-drawing process, and which is illustrated on the accompanying drawing, in which Fig. 1 is a longitudinal section through the same, while Fig.
  • FIG. 2 is a cross-section t-herethrough on the line- 2 of Fig, 1.
  • the improved collapsible draw-mandrel b for drawing, a work-piece a, for instance a tubular body with closed end, through a die 0, consists of a wedge-shaped flat middle member d-taperedtoward its front end i and on both sides of which two lateral members e of about semicircular cross-section are located in contact therewlth and provided with elongated slots f in their wedge-shaped surfaces.
  • a collapsible draw-mandrel comprising a longitudinal wedge-shaped flat middle member tapered toward its front end, two lateral members of about semicircular cross-section in contact therewith and having elongated slots in their contact surfaces, and projections on said middle member in slidable engagement with said slots.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Forging (AREA)

Description

y 1929- J. GROSSWEISCHEDE ET AL 1,713,962-
COLLAPSIBLE DRAW MANDREL Original Filed Jan. 24, 1927 5, ji'un fars:
.w-| 5 e M w (2-4 i Patented May 21, I 1929.
UNITED STATES PATENT OFFICE.
GERMANY,
STAHLWERKE .AKTIENGESELL- GERMANY, A CORPORATION OF GERMANY.
eoLLArsIBLn DRAW MANDREL.
Application filed January 24, 1927, Serial No. 163,133. Renewed larch 20, 1929.
This invention relates to an improved draw-mandrel of the collapsible type, for use in connection with a hot-drawing process, and which is illustrated on the accompanying drawing, in which Fig. 1 is a longitudinal section through the same, while Fig.
2 is a cross-section t-herethrough on the line- 2 of Fig, 1.
The improved collapsible draw-mandrel b, for drawing, a work-piece a, for instance a tubular body with closed end, through a die 0, consists of a wedge-shaped flat middle member d-taperedtoward its front end i and on both sides of which two lateral members e of about semicircular cross-section are located in contact therewlth and provided with elongated slots f in their wedge-shaped surfaces. which are in contact with the middle member d, into which slots engage proje'ctions g of said middle member in a slidable way so that the middle member can be displaced and brought outof contact with the two lateral members whereby the diameter or the circumference of the whole mandrcl can be reduced and thus the latter can be easily removed from the work-piece drawn.
What we claim, is
A collapsible draw-mandrel, comprising a longitudinal wedge-shaped flat middle member tapered toward its front end, two lateral members of about semicircular cross-section in contact therewith and having elongated slots in their contact surfaces, and projections on said middle member in slidable engagement with said slots.
In testimony whereof we have hereunto set our hands. 7
JULIUS GROSSWEISCHEDE. GEORG REICHENBECHER.
US163133A 1927-01-24 1927-01-24 Collapsible draw mandrel Expired - Lifetime US1713962A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE1925521448D DE521448C (en) 1927-01-24 1925-05-13 Process for the production of collar or flange pipes
US163133A US1713962A (en) 1927-01-24 1927-01-24 Collapsible draw mandrel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US163133A US1713962A (en) 1927-01-24 1927-01-24 Collapsible draw mandrel

Publications (1)

Publication Number Publication Date
US1713962A true US1713962A (en) 1929-05-21

Family

ID=22588625

Family Applications (1)

Application Number Title Priority Date Filing Date
US163133A Expired - Lifetime US1713962A (en) 1927-01-24 1927-01-24 Collapsible draw mandrel

Country Status (2)

Country Link
US (1) US1713962A (en)
DE (1) DE521448C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2558845A (en) * 1945-03-03 1951-07-03 Smith Corp A O Propeller shank forming press
US2633978A (en) * 1949-04-12 1953-04-07 Aluminum Co Of America Collapsible mandrel

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1024470B (en) * 1954-02-05 1958-02-20 Reisholz Stahl & Roehrenwerk Expandable pull rod, which is supported in its interior against the deformation pressure by a fixed abutment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2558845A (en) * 1945-03-03 1951-07-03 Smith Corp A O Propeller shank forming press
US2633978A (en) * 1949-04-12 1953-04-07 Aluminum Co Of America Collapsible mandrel

Also Published As

Publication number Publication date
DE521448C (en) 1931-03-21

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