US2601389A - Centrifugal casting machine - Google Patents

Centrifugal casting machine Download PDF

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Publication number
US2601389A
US2601389A US750203A US75020347A US2601389A US 2601389 A US2601389 A US 2601389A US 750203 A US750203 A US 750203A US 75020347 A US75020347 A US 75020347A US 2601389 A US2601389 A US 2601389A
Authority
US
United States
Prior art keywords
spindle
adapter
groove
holes
skirt
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
US750203A
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English (en)
Inventor
John D Guelph
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.)
A R D Corp
Original Assignee
A R D CORP
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 BE482607D priority Critical patent/BE482607A/xx
Application filed by A R D CORP filed Critical A R D CORP
Priority to US750203A priority patent/US2601389A/en
Priority to CH264974D priority patent/CH264974A/de
Priority to FR966646D priority patent/FR966646A/fr
Priority to GB13956/48A priority patent/GB646542A/en
Application granted granted Critical
Publication of US2601389A publication Critical patent/US2601389A/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
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D13/00—Centrifugal casting; Casting by using centrifugal force
    • B22D13/10—Accessories for centrifugal casting apparatus, e.g. moulds, linings therefor, means for feeding molten metal, cleansing moulds, removing castings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D13/00—Centrifugal casting; Casting by using centrifugal force
    • B22D13/04—Centrifugal casting; Casting by using centrifugal force of shallow solid or hollow bodies, e.g. wheels or rings, in moulds rotating around their axis of symmetry

Definitions

  • This invention relates to centrifugal casting machines. More particularly, it relates to a centrifugal casting machine wherein the flask table together with the fixtures thereon can be quickly attached and removed as a unit from the rotating spindle.
  • Molten metal has been centrifugally cast and the nature of the centrifugal casting machine depended in part on the size of the castings.
  • flasks containing the molds were arranged radially about a center pour fixture on a rotary table and the molten metal was ladled into the center pour chamber which was provided with openings to distribute the molten metal to the various flasks.
  • centrifugal castings were cast in relatively large flasks, a, single flask was placed on the center of the rotating table with its longitudinal axis vertically disposed on the center of rotation and the molten metal ladled directly into the rotating flask.
  • the table was rigidly and permanently attached to a shaft or spindle which was driven by an electric motor through a suitable drive, such as a belt and pulley.
  • a suitable drive such as a belt and pulley.
  • the flasks were at very high temperatures and had to be handled with great care.
  • the molten metal for some reason or other overflowed or leaked from the flasks and solidified on the table it was necessary to chip the metal from the table in order to prepare it to receive the fresh flasks. It is thus apparent that there was considerable idle time for the casting machine between the casting operations.
  • An object of this invention is to provide a new and improved centrifugal casting machine.
  • Another object of this invention is to provide a centrifugal casting machine wherein the idle time between casting operations is reduced to a minimum.
  • An additional object of this invention is to provide a centrifugal casting machine wherein the table together with the flask flxtures, flasks, etc. thereon as a unit can be easily and quickly attached to and released from the spindle of the machine.
  • a further object of this invention is to provide a centrifugal casting machine having a quickrelease mechanism whereby interchangeable flask tables together with the fixtures thereon 2 can be quickly attached to and removed from the spindle of the machine.
  • Figure l is a vertical section of a centrifugal molding machine embodying the principles of this invention.
  • Figure 2 is a section of a detail of the machine
  • Figure 3 is a section of another detail of the machine
  • Figure 4 is a plan view of the detail shown in Figure 3; v
  • Figure 5 is a plan view of another detail.
  • Figure 6 is a section taken on the line rE-B of Figure 5.
  • the reference numeral 10 designates a flask table which is permanently secured in any appropriate mannor to a centering adapter [2.
  • the table I0 may be provided with a single flask fixture if the machine is for casting relatively large castings, or with a plurality of (such as two or four) flask fixtures and a center pour fixture if the machine is to cast a plurality of articles. Since the details of construction of the flask fixtures and the center pour are known and form no part of this invention, further description thereof is considered unnecessary.
  • the adapter I2 is formed on the top thereof with a tongue I4 which is adapted to cooperate with a groove in the table It.
  • the portion of the adapter extending laterally from the tongue constitutes a flange l6.
  • the adapter is formed with a downwardly tapering portion 18 which terminates in a cylindrical skirt as.
  • the inner surface of the skirt 20 is provided with an annular groove 22, and the bottom end of the skirt is provided with a plurality of holes 24.
  • the adapter I 2 is adapted to be disposed in a central opening at the top of a spindle 26
  • the spindle 26, at the top of the central opening, is provided with a flange 28, and the inner surface of the flange 28 is inclined at the same angularity as the downwardly tapering portion [8 of the adapter 12.
  • the inner diameter of the central opening of the spindle is such as to receive the skirt 20.
  • the flange l6 of the adapter is seated on the flange 28 of the spindle and the tapering portion IQ of the adapter seated on the correspondingly tapered portion of the flange 28.
  • a sleeve 36 is disposed interiorly of the depending skirt 20 of the adapter.
  • the sleeve 30 is provided at the bottom thereof with an annular flange 32 which is disposed on the bottom of the central opening of the spindle and extends beneath and in spaced relationship to the lower end of the skirt 20.
  • the flange 32 is provided with two sets of holes 34 and 36 respectively. Screws 48, passing through the holes 34 and into aligned holes in the spindle, secure the sleeve to the spindle.
  • each plunger In order to transmit torque from the spindle 26 to the adapter l2, spring-pressed plungers 42 are attached to the spindle 26 and each plunger extends through a hole 36 which is in alignment with a hole 24 in the adapter. As shown in Figure 1, each plunger extends into a hole 44 in the spindle, and a spring 45 disposed between a collar 48 and a shoulder 50 continually urges the plunger upwardly.
  • the sleeve 30 is provided with three circular holes 52, the center axis of each being, as shown in Figure 3, inclined to the horizontal. In other words, the wall of each hole 52 slopes downwardly in the direction toward the center axis of the sleeve.
  • the holes 52 are located in the sleeve 30 so each will be in communication with the groove 22 in the adapter.
  • a ball 56 is disposed in each of the holes 52 and a part of each ball is adapted to be received or seated in the groove 22 when such ball is partially displaced by a cam 58 slidably disposed in the sleeve 33.
  • the groove 22 is preferably curved on a radius substantially the same as that of the balls.
  • the cam 53 is appropriately secured to one end of a connecting rod 60 which is slidably disposed in a bore axially of the spindle.
  • a compression spring 62 continuously urges the cam 58 in the direction so that the adapter [2 is locked to the sleeve 36 as previously described.
  • the cam 58 is provided with an inclined groove 65 which is adapted to receive the balls when it is in aligned relationship with the holes 52.
  • the cam 53 has been retracted so that the groove 64 thereof is in alignment with the holes 52, due to the inclination of the latter and the force of gravity, the balls will slide from and be free of the groove 22 and be disposed in the holes 52 and the groove 64, whereby the adapter will be in unlocked position.
  • a separate retaining member which cooperates with each hole.
  • the retaining member 58 is secured in an under-cut by a screw '52.
  • the outer edge 13 of the retaining member is arcuate and downwardly inclined, as shown in Figures 5 and 6 of the drawings, and extends into the hole 52 so as to prevent the ball 56 from passing entirely from the sleeve.
  • the spindle 26 is rotatably mounted in bearings and 16 in a spindle housing 11.
  • the bearing 15 is disposed opposite the central opening of the spindle, and the bearing 15 is disposed adjacent the bottom of the housing.
  • a cap cover 18 is secured, as by screws 36, to the top of the housing.
  • a cap cover 82 is secured to the bottom of the housing. It is to be noted that the bearing I6 is maintained in position by the nuts 84 on the spindle.
  • the spindle 26 extends through a hole in the cap 82 and is provided with a pulley 86 which is driven by belts from a driving motor (not shown).
  • the connecting rod 6% which is slidably disposed in a central bore in the spindle 26, projects beyond the pulley 86 and is provided with a spool 88 which is maintained in position by a shoulder til and the nuts 92.
  • a yoke 94 at one end of a lever 96 is secured to the spool 88.
  • the lever 96 is pivotally mounted on a stud 9B and is held in position thereon by a cotter pin l'fiil.
  • the stud 98 is carried on a bracket [02 secured to the housing 17 by means of screws I04.
  • the lever 96 is provided with a pin I06 which is adapted to cooperate with a hooked member we carried on one end of a push rod H0, the other end of which is secured to a piston H2 slidably mounted in and actuated by a fluid, hydraulic or air, in a cylinder H4.
  • a normally open limit switch LS is attached to the bracket I62 by a support H6.
  • the switch LS is attached in series with the motor control relay and, when the machine is positioned for casting, the switch will be closed by the push rod. Alternatively, when the release mechanism is in disengaged position, the switch LS. will be open and the motor cannot be started.
  • a table provided with the desired flask fixtures, flasks and center pour, if necessary, as a unit is positioned on the spindle with the connecting rod in retracted position.
  • the balls are free of the groove 22, the plungers 42 will enter in the holes 24 of the adapter, and the limit switch LS is in open position.
  • the piston I I2 is actuated so that it will move downwardly whereby the limit switch LS will be closed and the cam 58 will be elevated.
  • each ball 56 will be forced from the groove 64 so that it projects from the hole 52 into the groove 22.
  • the adapter is locked in position and the motor driving the spindle started.
  • the piston is actuated to move upwardly, whereby the limit switch is opened stopping the motor, and the connecting rod 60 depressed.
  • the cam 58 is lowered and the balls roll into the cam groove and the adapter released from locking position.
  • the adapter and table with the associated flask fixtures, casting, etc. are removed as a unit and another adapter and table with the associated elements positioned in place. The cycle of operations are then repeated.
  • the present invention provides a machine wherein the idle time is reduced to a minimum.
  • another table can be prepared for the next casting operation. After the casting operation has been performed with the table in the machine, such table can be removed and the previously prepared table can be positioned in place.
  • the means for securing and releasing the adapter in position on the spindle are quick-acting, and such operations can be performed expeditiously and rapidly.
  • a rotatable table to support a work piece
  • a coupling member permanently secured to said table
  • said member having a depending cylindrical skirt provided with an annular groove in the inner periphery thereof, a rotatable hollow spindle having at its free end inner and outer concentric cylindrical flanges spaced to form an annular groove therebetween for receiving said skirt, whereby said annular flanges engage and support both the inner and the outer surfaces of said cylindrical skirt, said skirt having holes extending axially and disposed around its lower surface, coupling plungers carried by said spindle, projecting axially into said annular groove and registering with said holes, spring means advancing said plungers into said holes to transmit the torque of the rotating spindle to said skirt, the inner cylindrical flange of said spindle carrying a set of balls in registration with the groove in said skirt, and a rod extending axially in said hollow spindle and having a cam surface adapted to advance said balls into the groove in the skirt to lock said skirt against axial movement in said

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Centrifugal Separators (AREA)
  • Casting Devices For Molds (AREA)
US750203A 1947-05-24 1947-05-24 Centrifugal casting machine Expired - Lifetime US2601389A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE482607D BE482607A (enrdf_load_stackoverflow) 1947-05-24
US750203A US2601389A (en) 1947-05-24 1947-05-24 Centrifugal casting machine
CH264974D CH264974A (de) 1947-05-24 1948-05-12 Schleudergiessmaschine.
FR966646D FR966646A (fr) 1947-05-24 1948-05-22 Machine de coulée centrifuge
GB13956/48A GB646542A (en) 1947-05-24 1948-05-24 Centrifugal casting machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US750203A US2601389A (en) 1947-05-24 1947-05-24 Centrifugal casting machine

Publications (1)

Publication Number Publication Date
US2601389A true US2601389A (en) 1952-06-24

Family

ID=25016933

Family Applications (1)

Application Number Title Priority Date Filing Date
US750203A Expired - Lifetime US2601389A (en) 1947-05-24 1947-05-24 Centrifugal casting machine

Country Status (5)

Country Link
US (1) US2601389A (enrdf_load_stackoverflow)
BE (1) BE482607A (enrdf_load_stackoverflow)
CH (1) CH264974A (enrdf_load_stackoverflow)
FR (1) FR966646A (enrdf_load_stackoverflow)
GB (1) GB646542A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2676279A (en) * 1949-05-26 1954-04-20 Allis Chalmers Mfg Co Large capacity generator shaft coupling
US2771647A (en) * 1953-06-09 1956-11-27 Albert B Hemstreet Locking means for centrifugal molds
US2987334A (en) * 1959-06-22 1961-06-06 Apex Machine & Tool Company Tool holders
US3215458A (en) * 1962-10-31 1965-11-02 Deere & Co Coupling
WO2003049886A3 (en) * 2001-12-13 2003-10-30 Brasil Compressores Sa Bearing arrangement for a centrifugal casting machine
CN120079822A (zh) * 2025-04-30 2025-06-03 超精(苏州)航空精密机械制造有限公司 一种用于铸件晶粒细化离心装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5529421A (en) * 1993-10-22 1996-06-25 Dcd Design & Manufacturing Ltd. Harsh environment swivel
US5494367A (en) * 1993-12-09 1996-02-27 Epkens; Heiko Harsh environment line swivel

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US18924A (en) * 1857-12-22 Improvement in casting car-wheels
US1376090A (en) * 1919-12-27 1921-04-26 John L Gerber Die-casting apparatus
US1428048A (en) * 1918-11-01 1922-09-05 Us Cast Iron Pipe & Foundry Co Centrifugal casting machine
US1635144A (en) * 1926-12-18 1927-07-05 Jr William Grant Stevens Coupling
US1772944A (en) * 1928-05-05 1930-08-12 Eclipse Machinery Company Electrical utility machine
US1964647A (en) * 1930-06-17 1934-06-26 Kalif Corp Method of welding
US2000155A (en) * 1932-07-30 1935-05-07 Kelsey Hayes Wheel Co Apparatus for forming brake drums
US2010210A (en) * 1933-06-01 1935-08-06 Degussa Holder for dental instruments
US2055225A (en) * 1936-04-22 1936-09-22 Edmund I Tooker Control for power operated wringers
US2101684A (en) * 1936-03-12 1937-12-07 Gen Electric Spinning bucket drive
US2255695A (en) * 1938-05-12 1941-09-09 Clinton H M Bull Sucker rod locking means
US2290215A (en) * 1938-11-21 1942-07-21 Stenberg Sigfrid Linus Tool holder for machine tools
US2361906A (en) * 1940-07-29 1944-11-07 Fairbanks Morse & Co Centrifugal apparatus
US2392299A (en) * 1943-08-02 1946-01-01 Allis Chalmers Mfg Co Centrifugal casting machine

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US18924A (en) * 1857-12-22 Improvement in casting car-wheels
US1428048A (en) * 1918-11-01 1922-09-05 Us Cast Iron Pipe & Foundry Co Centrifugal casting machine
US1376090A (en) * 1919-12-27 1921-04-26 John L Gerber Die-casting apparatus
US1635144A (en) * 1926-12-18 1927-07-05 Jr William Grant Stevens Coupling
US1772944A (en) * 1928-05-05 1930-08-12 Eclipse Machinery Company Electrical utility machine
US1964647A (en) * 1930-06-17 1934-06-26 Kalif Corp Method of welding
US2000155A (en) * 1932-07-30 1935-05-07 Kelsey Hayes Wheel Co Apparatus for forming brake drums
US2010210A (en) * 1933-06-01 1935-08-06 Degussa Holder for dental instruments
US2101684A (en) * 1936-03-12 1937-12-07 Gen Electric Spinning bucket drive
US2055225A (en) * 1936-04-22 1936-09-22 Edmund I Tooker Control for power operated wringers
US2255695A (en) * 1938-05-12 1941-09-09 Clinton H M Bull Sucker rod locking means
US2290215A (en) * 1938-11-21 1942-07-21 Stenberg Sigfrid Linus Tool holder for machine tools
US2361906A (en) * 1940-07-29 1944-11-07 Fairbanks Morse & Co Centrifugal apparatus
US2392299A (en) * 1943-08-02 1946-01-01 Allis Chalmers Mfg Co Centrifugal casting machine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2676279A (en) * 1949-05-26 1954-04-20 Allis Chalmers Mfg Co Large capacity generator shaft coupling
US2771647A (en) * 1953-06-09 1956-11-27 Albert B Hemstreet Locking means for centrifugal molds
US2987334A (en) * 1959-06-22 1961-06-06 Apex Machine & Tool Company Tool holders
US3215458A (en) * 1962-10-31 1965-11-02 Deere & Co Coupling
WO2003049886A3 (en) * 2001-12-13 2003-10-30 Brasil Compressores Sa Bearing arrangement for a centrifugal casting machine
US6997236B2 (en) 2001-12-13 2006-02-14 Empresa Brasileira De Compressores S.A. Bearing arrangement for a centrifugal casting machine
CN120079822A (zh) * 2025-04-30 2025-06-03 超精(苏州)航空精密机械制造有限公司 一种用于铸件晶粒细化离心装置

Also Published As

Publication number Publication date
GB646542A (en) 1950-11-22
CH264974A (de) 1949-11-15
BE482607A (enrdf_load_stackoverflow)
FR966646A (fr) 1950-10-13

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