US2518890A - Die sinking - Google Patents

Die sinking Download PDF

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Publication number
US2518890A
US2518890A US767098A US76709847A US2518890A US 2518890 A US2518890 A US 2518890A US 767098 A US767098 A US 767098A US 76709847 A US76709847 A US 76709847A US 2518890 A US2518890 A US 2518890A
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US
United States
Prior art keywords
jig
templates
die
dies
print
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
US767098A
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English (en)
Inventor
Heron John Aherne
Shaw John
Lothar N Hocking
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.)
Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US2518890A publication Critical patent/US2518890A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/06—Permanent moulds for shaped castings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
    • B22C7/04—Pattern plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings
    • B22C9/04—Use of lost patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/06—Permanent moulds for shaped castings
    • B22C9/061—Materials which make up the mould

Definitions

  • the pattern drawings are conventionally twenty times the actual blade size and for the purpose of the method of die making according to the present invention only need show the sections of the blade at successive stations longitudinally spaced along the blade, with blade and station identifications clearly marked as well as the die datum line and-it may be--a division line as between the two dies of the mating pair, these latter being arbitrarily selected by the die sinker to permit, if possible, the splitting of the dies with no undercuts and usually followin the leading and trailing edges of the blade.
  • Fig. 1 shows a fragment of the gauge-plate 1 upon which there has been reproduced photographically by printing the sectional outline 2 and 3 of a particular station along the length of the blade as well as the die datum line 4 and 5 and the arbitrarilyxselected split lines 6 and I,
  • Fig. 2 shows the contours of the mating dies at this station and the mating templates from which they are to be formed while Fig. 3 shows one of the templates cut to the outline of the print, 1. e. after the gauge plate has been filed to shape and checked by projection against the large scale drawings.
  • the checked templates It for the selected stations. are now assembled with interveningv accurately machined spacer blocks 1 1 corresponding to the station in tervals in a steel jig [2 having walls L3 with flanges :4 which are complementary to the die datum lines A and 5 and therefore to the marginal profile of the templates 1.0., which are clamped in place with the platform 15 and through the medium of screws 16.
  • the blade rootshapes are in the :main straightforward parts, machined models ll of these parts are used .101' assembly with the templates H1 in the jig l2.
  • a modelling material 20 such as plaster of Paris which is strickled to the contour of the templates, and result in a, pattern assembly in the jig as shown in Fig. 5.
  • a print is then taken of this jig assembly as shown in Fig. 6 at 2
  • the jig I2 on the press head 22 is then lowered or plunged into the molten metal and the die chamber 25 is rapidly cooled by the circulation of coolant thereby forming the print or die 2
  • the complementary templates one of which is shown in Fig. 8 at 30 could be assembled as previously described in a separate jig similar to I2 but great difficulty would then arise with an article of this shape in matching the split lines 6 and I of the two dies of the pair and accordingly it is preferred to use the same jib l2 for forming both dies.
  • the strickled impression in such jig I2 is saw slotted at the appropriate stations adjacent to the templates l0, and the complementary templates 3!] are mounted in the saw cuts and anchored in position on the steel jig l2 by means of holding bolts 3
  • the complementary templates 30. thus assembled share the split lines 6 and I of the first templates In in the surround of the impression and in this way the same datum and split line jig surface are used in the production of both dies of the pair.
  • a print is then taken of the jig with such projecting templates in position as represented in Fig. 9 by press casting as before, but in this case the complementary templates 30 are disengaged from the jig l2 and left in the cast print which is shown at 36 in Fig. 12.
  • the machined root I1 is now removed from the jig l2 and positioned in the print 36, plaster of Paris 34 is then strickled to the contour 3 of the templates 30 as shown in Fig. 13 and a second print 37 is taken from it by press casting as described in reference to Fig. 7, which second print 31 is the complementary die.
  • a method of die making including the steps of preparing templates to the contours corresponding to the cross section at successive sta- 45 tions along the length of the article, assembling the templates in a jig, forming one component of the die by taking a casting of the assembled jig, removably applying to said jig templates conforming to the contour of the surface of the other component of the die, taking a casting of the jig and applied templates, and on removal of said jig leaving said applied templates in said lastnamed casting.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
US767098A 1946-01-19 1947-08-07 Die sinking Expired - Lifetime US2518890A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1890/46A GB621854A (en) 1946-01-19 1946-01-19 Improvements in methods of making dies for casting or moulding articles

Publications (1)

Publication Number Publication Date
US2518890A true US2518890A (en) 1950-08-15

Family

ID=9729845

Family Applications (1)

Application Number Title Priority Date Filing Date
US767098A Expired - Lifetime US2518890A (en) 1946-01-19 1947-08-07 Die sinking

Country Status (3)

Country Link
US (1) US2518890A (en(2012))
GB (1) GB621854A (en(2012))
NL (1) NL68046C (en(2012))

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2716909A (en) * 1952-02-09 1955-09-06 Rupert Richard Method of making a reflector mold
US2878561A (en) * 1954-11-09 1959-03-24 North American Aviation Inc Method of forging a metallic workpiece
US3064314A (en) * 1958-07-11 1962-11-20 August Lapple G M B H & Co Method of making metal clad objects
US3133467A (en) * 1961-06-20 1964-05-19 Charles H Tauser Punching apparatus with a novel die mounting
CN111168003A (zh) * 2020-01-06 2020-05-19 山东力能重工有限公司 一种高压开关壳体防爆法兰的铸造方法

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1956907A (en) * 1932-03-12 1934-05-01 Theodore A Miller Method of casting
US2130710A (en) * 1937-01-15 1938-09-20 Alexander James Wolfe Manufacture of metal cutting tools
US2256338A (en) * 1940-12-16 1941-09-16 Joseph B Brennan Method of forming mold patterns
US2274060A (en) * 1938-10-31 1942-02-24 United Shoe Machinery Corp Mold and mold making method
US2325989A (en) * 1940-07-22 1943-08-03 Trayer Products Inc Production of gears or the like
US2369960A (en) * 1943-12-06 1945-02-20 Gage Printing Company Ltd Method of making templates
US2372470A (en) * 1942-12-07 1945-03-27 Weldon Tool Co Machine tool with optical system
US2404770A (en) * 1943-08-19 1946-07-30 American Optical Corp Optical scanning device and process of making articles therewith
US2447620A (en) * 1945-08-24 1948-08-24 Bendix Aviat Corp Method of forming molds

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1956907A (en) * 1932-03-12 1934-05-01 Theodore A Miller Method of casting
US2130710A (en) * 1937-01-15 1938-09-20 Alexander James Wolfe Manufacture of metal cutting tools
US2274060A (en) * 1938-10-31 1942-02-24 United Shoe Machinery Corp Mold and mold making method
US2325989A (en) * 1940-07-22 1943-08-03 Trayer Products Inc Production of gears or the like
US2256338A (en) * 1940-12-16 1941-09-16 Joseph B Brennan Method of forming mold patterns
US2372470A (en) * 1942-12-07 1945-03-27 Weldon Tool Co Machine tool with optical system
US2404770A (en) * 1943-08-19 1946-07-30 American Optical Corp Optical scanning device and process of making articles therewith
US2369960A (en) * 1943-12-06 1945-02-20 Gage Printing Company Ltd Method of making templates
US2447620A (en) * 1945-08-24 1948-08-24 Bendix Aviat Corp Method of forming molds

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2716909A (en) * 1952-02-09 1955-09-06 Rupert Richard Method of making a reflector mold
US2878561A (en) * 1954-11-09 1959-03-24 North American Aviation Inc Method of forging a metallic workpiece
US3064314A (en) * 1958-07-11 1962-11-20 August Lapple G M B H & Co Method of making metal clad objects
US3133467A (en) * 1961-06-20 1964-05-19 Charles H Tauser Punching apparatus with a novel die mounting
CN111168003A (zh) * 2020-01-06 2020-05-19 山东力能重工有限公司 一种高压开关壳体防爆法兰的铸造方法

Also Published As

Publication number Publication date
GB621854A (en) 1949-04-21
NL68046C (en(2012))

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