US3851985A - Collar and method of making same - Google Patents

Collar and method of making same Download PDF

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Publication number
US3851985A
US3851985A US00290445A US29044572A US3851985A US 3851985 A US3851985 A US 3851985A US 00290445 A US00290445 A US 00290445A US 29044572 A US29044572 A US 29044572A US 3851985 A US3851985 A US 3851985A
Authority
US
United States
Prior art keywords
opening
cavities
article
extending
collar
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
US00290445A
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English (en)
Inventor
R Coleman
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.)
Xerox Corp
Kennecott Mining Corp
Original Assignee
Xerox 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
Application filed by Xerox Corp filed Critical Xerox Corp
Priority to US00290445A priority Critical patent/US3851985A/en
Priority to NL7312241A priority patent/NL7312241A/xx
Priority to US05/502,081 priority patent/US3932177A/en
Application granted granted Critical
Publication of US3851985A publication Critical patent/US3851985A/en
Assigned to KENNECOTT MINING CORPORATION reassignment KENNECOTT MINING CORPORATION CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE DEC. 31, 1986. (SEE DOCUMENT FOR DETAILS) Assignors: KENNECOTT CORPORATION
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
    • F16B7/18—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections using screw-thread elements
    • F16B7/182—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections using screw-thread elements for coaxial connections of two rods or tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/06—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of threaded articles, e.g. nuts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F16B21/10—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members
    • Y10T403/7041—Interfitted members including set screw

Definitions

  • Each of the cavities terminates in a partial annular threaded segment which segment coacts to form an opening having interrupted threads to receive a setscrew.
  • the threads on each of the annular segments extends transversely to a direction of application of pressure when forming the collar such as by compacting metal powder which is subsequently sintered.
  • collars having setscrews are utilized on shafts to either locate the shaft in a supporting structure orto maintain a critical position of a part carried by the shaft.
  • collars are usually cut from bar stock and the setscrew hole is formed by drilling and tapping operations. This method of forming a collar or other articles requires expensive machining processes which increase the cost of the article.
  • valve sleeve which has ports and is disclosed in U.S. Pat. No. 3,353,249 which issued to MacF'arlane et al. on Nov. 21,” 1967 or a pulley wheel which has helical towards a surfaceof the body with adjacent cavities extending in opposite directions and overlapping each other at the end'walls so that a-threaded element can be threadably received in the second opening.
  • FIG. 1 is a side elevation of the article of the present invention utilized for positioning another element on a shaft;
  • FIG. 2 is a view of one end of the article of the present invention.
  • FIG. 3 is a view of the other end of the article of the present invention.
  • FIG. 4 is a cross section of the article of the present invention taken along lines IVIV of FIG. 3;
  • FIG. 5 is a top view of the article of the present invention.
  • FIG. 6 is a cross-sectional view of a die arrangement which can be utilized in the method of forming the article of the present invention.
  • Theprinciples of thepresent invention are particularly-useful in an article such as a collar 10 which is telescopically received on a member such as a shaft 11 and detechably secured on the shaft ll by a setscrew teeth and is disclosed in the U.S. Pat. No. 3,429,700
  • the present invention is directed'to the structure of an article such as a collar having a setscrew hole while structure enables the fabrication of the entire article in a simple molding process without requiring additional steps of drilling and-tapping to form the setscrew hole which receives a setscrew forsecuring the article on a member.
  • the article is formed in the desired configuration by compacting metal powders and is subsequently sintered;
  • the structure of the article provides an opening for receiving a member, a second opening extending at an angle thereto which second opening haspartial annular segments which are provided with threads and which coact to provide interrupted threads for the second opening.
  • each of the partial segments is on an end wall of a cavity extending axially 12 to maintain the shaft 1.1 and a second structure 13 in the desired position or relationship.
  • the structure 13 can be any article such as a roll which is rotatably supplied on the shaft 11 or it can be a portion of a frame or supporting structure for supporting the shaft in which case the collar l0v is utilized for maintaining the shaft in the desired axial position in the supporting structure.
  • the article 10 is a one-piece body with a pairfof end surfaces l5 and l6 and an outer surface 17. which is illustrated as being a cylindrical surface.
  • the outer surface 17 of the collar can have any desired configuration.
  • the article 10 has a first opening 18 which extends inwardly from one of the end surfaces 15 and 16 and preferably extends completely through the one-piece body.
  • the opening 18 can be a cylindrical opening, as illustrated, or if desired can have any configuration for exterior surface other than a cylindrical surface.
  • the article has a pair of cavities l9 and 20 which extend inwardly from each of the end surfaces 15 and 16.
  • the cavity 19, as illustrated, is in communication with the outer surface 17 and the cavity 20 is in communication with the first opening 18.
  • the cavity 19 has a bottom wall 21 and anend wall 22 a portion of which has a semi-circular depression 23 to form a partial annular segment with threads extending through an arc of approximately
  • the cavity 20 has a bottom wall 24 and terminates in an end wall 25 which has a portion forming a partial annular segment 26, which has threads.
  • the cavities 19 .and 20 are radially. offset from an axis of the opening 18 so that the bottom walls 21 and 24 are on substantially the same plane.
  • Each of the cavities l9 and 20 have a length and they extend inwardly from the end surface 15 and 16, respectively, so that the end walls 22 and 25 are on substantially the same plane with the segments 23 and 26 overlapping and coacting to define a second opening 28 which has an axis lying in the plane defined by the end walls 22 and 25.
  • the offset and facing orientation of the segments 23 and 26 provides the opening 28 with interrupted or discontinuous threads for threadably receiving a threaded element.
  • a setscrew such as 12 is threadably received in the second opening 28, which preferably extends substantially perpendicular to the axis of the opening 18.
  • the setscrew 12 can be any standard setscrew which when tightened will hold the collar or article in the desired position on the shaft 11.
  • the collar 10 is preferably formed by a method utilizing a minimum number of forming steps.
  • the preferred method utilizes powder metal technology in which metal powders are pressed into the configuration of the collar with the axis of the setscrew opening 28 formed by the segments 23 and 26 extending transversely to the direction of pressing to enable the complete compacting of the powder into the article in a single pressing operation. Subsequent to the pressing of the powder into a green compact, the operation is completed by sintering the green compact. If desired, the sintered compact is then subjected to a coining operation.
  • the die 30 consists of two relatively movable parts 31 and 32.
  • the part 31 has a substantially annular cavity 33 formed by a continuous side wall 34 and a center member 35.
  • a projection 36 extends into the annular cavity 33 along the side wall 34 and is provided with an end portion 37 of the desired configuration to form the threaded segment 23.
  • the part 32 has an annular compacting surface 38 with a projection 39 which has an end portion 40 to form the threaded annular segment 26 as the projection 38 forms cavity 20.
  • the part 32 is slidably received in the part 31, and, as illustrated, is connected with a spline connection 41 to prevent relative rotation therebetween.
  • the cavity 33 is charged or filled with the metal powders and then pressure is applied to force the part 32 into the annular cavity 33 for compacting the powders to substantially the final configuration of the collar or article 10 which final configuration is obtained when part 32 assumes the position illustrated in broken lines.
  • the part 32 is withdrawn to enable removal of the green compact for a subsequent sintering step.
  • the sintered article can be coined by a conventional coining process in the same die or a similar die to size the article.
  • the die member may be subdivided into several movable parts.
  • the die 30 is only an example of a die which can be used to press the powder into a green compact.
  • the single body article can be produced from powder metal by a simple compacting process which is followed by a sintering operation.
  • the cavities l9 and 20 enable pressure to be applied on the metal powder to form the threaded segment without requiring expensive machining operations such as drilling and tapping.
  • the collar can also be formed by molding a plastic material in a molding chamber having forming surfaces providing the desired configuration. After the material is molded, some or all of the molding surfaces are withdrawn to enable removal or stripping of the one-piece body of the article 10.
  • the article can be formed in a mold similar to die 30 which mold is capable of applying heat and pressure on a plastic powder to cause conglomeration of the powder into the article which is subsequently stripped from the mold after some of the forming surfaces are withdrawn.
  • gears having a hub with a setscrew can be provided with a hub configuration of article 10 and can be produced by the method of the present invention.
  • An article adapted for mounting on a member and detachably secured thereon by a threaded element comprising a one-piece body having a first opening extending inwardly from one surface for receiving the member and having a second opening extending from the first opening at an angle thereto, said second opening having threaded segments of a partial annular configuration, said segments being axially offset from each other along an axis of the second opening and coacting to provide the second opening with interrupted threads for receiving a threaded element.
  • each of the segments is on an end wall of a cavity extending axially towards a surface of the body with adjacent cavities extending in opposite directions, said cavities overlapping each other at the end wall so that a threaded element can be threadably received in the second openmg.
  • each of the annular segments comprises a portion of the end wall of its respective cavity and the remaining portion of the end walls of-each cavity lies on a plane passing through the axis of the second opening.
  • An article adapted for mounting on a member and detachably secured thereon by a threaded element comprising a one-piece body of compacted metal powder having a first opening extending axially therethrough for telescopically receiving the member, and a pair of extending cavities each having an end wall and a bottom wall, one of said pair of cavities being in cornmunication with the first opening and extending inwardly from one end surface and the other of the pair of cavities extending inwardly from the other end surface and being opened to the exterior surface of the article, each of said end walls of the cavities having at least a partial annular segment provided with threads, said pair of cavities having a depth so that both bottom receiving a threaded element.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)
US00290445A 1972-09-20 1972-09-20 Collar and method of making same Expired - Lifetime US3851985A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US00290445A US3851985A (en) 1972-09-20 1972-09-20 Collar and method of making same
NL7312241A NL7312241A (OSRAM) 1972-09-20 1973-09-04
US05/502,081 US3932177A (en) 1972-09-20 1974-08-30 Method for forming a collar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00290445A US3851985A (en) 1972-09-20 1972-09-20 Collar and method of making same

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US05/502,081 Division US3932177A (en) 1972-09-20 1974-08-30 Method for forming a collar

Publications (1)

Publication Number Publication Date
US3851985A true US3851985A (en) 1974-12-03

Family

ID=23116032

Family Applications (1)

Application Number Title Priority Date Filing Date
US00290445A Expired - Lifetime US3851985A (en) 1972-09-20 1972-09-20 Collar and method of making same

Country Status (2)

Country Link
US (1) US3851985A (OSRAM)
NL (1) NL7312241A (OSRAM)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4195764A (en) * 1977-11-02 1980-04-01 Caterpillar Tractor Co. Brazing of powdered metal parts
US4343564A (en) * 1981-02-17 1982-08-10 Stackpole Components Company Rotatable member rigidly mounted on an undersize shaft
US20040004387A1 (en) * 2002-05-14 2004-01-08 Ernest Spence Vehicle tilt seat handle coupling

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3276111A (en) * 1963-10-18 1966-10-04 Federal Mogul Bower Bearings Process of making a complex sintered powdered material article
US3429700A (en) * 1966-09-20 1969-02-25 Teleflex Inc Method of producing composite metal articles by uniting two identical shapes

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3276111A (en) * 1963-10-18 1966-10-04 Federal Mogul Bower Bearings Process of making a complex sintered powdered material article
US3429700A (en) * 1966-09-20 1969-02-25 Teleflex Inc Method of producing composite metal articles by uniting two identical shapes

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Keystone Carbon Company, Powder Metallurgy, Sept. 17, 1945, page 6, item 4. *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4195764A (en) * 1977-11-02 1980-04-01 Caterpillar Tractor Co. Brazing of powdered metal parts
US4343564A (en) * 1981-02-17 1982-08-10 Stackpole Components Company Rotatable member rigidly mounted on an undersize shaft
US20040004387A1 (en) * 2002-05-14 2004-01-08 Ernest Spence Vehicle tilt seat handle coupling
US6860565B2 (en) 2002-05-14 2005-03-01 Ernest Spence, Jr. Vehicle tilt seat handle coupling

Also Published As

Publication number Publication date
NL7312241A (OSRAM) 1973-11-26

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AS Assignment

Owner name: KENNECOTT MINING CORPORATION

Free format text: CHANGE OF NAME;ASSIGNOR:KENNECOTT CORPORATION;REEL/FRAME:004815/0036

Effective date: 19870220