US3440850A - Apparatus for forming locking heads on rivets - Google Patents

Apparatus for forming locking heads on rivets Download PDF

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Publication number
US3440850A
US3440850A US627152A US3440850DA US3440850A US 3440850 A US3440850 A US 3440850A US 627152 A US627152 A US 627152A US 3440850D A US3440850D A US 3440850DA US 3440850 A US3440850 A US 3440850A
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US
United States
Prior art keywords
rivet
head
holder
rivets
pinion
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
US627152A
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English (en)
Inventor
Karl Friedrich
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.)
Bracker AG Metallwaren & Mas F
Bracker Ag Metallwaren & Mas Fab
Original Assignee
Bracker AG Metallwaren & Mas F
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 Bracker AG Metallwaren & Mas F filed Critical Bracker AG Metallwaren & Mas F
Application granted granted Critical
Publication of US3440850A publication Critical patent/US3440850A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
    • B23Q1/50—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism
    • B23Q1/54—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only
    • B23Q1/545—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only comprising spherical surfaces
    • B23Q1/5462—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only comprising spherical surfaces with one supplementary sliding pair
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/02—Riveting procedures
    • B21J15/04—Riveting hollow rivets mechanically
    • B21J15/046—Riveting hollow rivets mechanically by edge-curling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/12—Riveting machines with tools or tool parts having a movement additional to the feed movement, e.g. spin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
    • B23Q1/50—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism
    • B23Q1/54—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only
    • B23Q1/545—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only comprising spherical surfaces

Definitions

  • An apparatus for forming locking heads on rivets comprises a hollow body for detachable seourement to the head of a riveting machine, a constantly-driven member journalled in this body for coaxial rotation, and a shaft journalledin this rotary member for rotation about a parallel eccentric axis.
  • a pinion at the outer end of this shaft meshes with an internally-toothed gear located in the body, an annular end-cap which contains a holder for a rivet-set spring-pressed against a retaining ring for the internally-toothed gear.
  • the tool-holder and ring have complementary part-spherical faces to permit universal oscillatory movement of said tool-holder during its rotation by a ball-ended eccentric peg on the driving pinion, the diameter of the latter being so related to that of the internally-toothed gear that the hypocycloids described by a point on said pinion intersect the axis of said rotary member.
  • the invention concerns an apparatus for the formation of locking heads on rivets by the pressure of a rivet-set which is mounted in a tool-holder for movement upon an inner spherical surface.
  • the substantially conical tool holder is eccentrically mounted at its tip, so that during operation of the longitudinal axis of such holder it describes a conical surface.
  • rotation of the tool-holder is resisted, due to its spherical outer surface bearing upon a stationary part of the machine, its rolling movement has a sliding movement superimposed thereon except when there is line contact between the riveting-set and the head of the rivet.
  • a conical rivet head is not desired, and accordingly the point of contact between the rivet-set and the head of the rivet follows a curvilinear path.
  • the rivet-set whilst rotating around the head of the rivet, engages the latter along a line, so that during the production of the rivet head, material is displaced transversely of such line of contact.
  • the object of the invention is to provide an apparatus in which the end of the rivet-set remote from the workpiece carries out a diametral, as well as a rotary, movement, so that irrespective of the design of the rivet-set, point contact between the latter and the workpiece is always obtained.
  • This is achieved, according to the invention, by driving the tool holder by means of a gear, a point on which traces hypocycloids, such hypocycloids causing the tool holder, during the yworking process, to pass through a position aligned with the rivet axis and arranging themselves in a circumferential row, on the area to be stroked. In this way an even working of the head of the rivet is obtained with a constantly changing inclination of the rivet-set.
  • a body 2 provided with a longitudinal slot is clamped by means of screws (not shown) upon the head 1, shown in chain-dotted line, of a driving machine.
  • a rotary member 6 is journalled in this body 2 by means of t-wo thrust bearings 3, ⁇ 4 engaging a ange 5 thereon and needle bearings arranged in axially-spaced sets.
  • the thrust bearings 3 and 4 are located by means of a retaining ring 7 secured in the body 2.
  • the rectangular nose 8 ⁇ of a driving shaft ⁇ 9 mounted in the head 1 engages with a diametral slot in the rotary member 6.
  • This shaft and the rotary member 6 may also be coupled to one another by means of at least one peg.
  • the rotary member 6 has an eccentrically-disposed longitudinal bore through which passes a driving shaft 10, itself mounted in axially-spaced sets of needle bearings and having a pinion 11 at the end remote from the driving shaft 9. This pinion abuts the rotary member 6 and is located against axial movement relative thereto by means of a retaining plate 12 fixed to the other end of the driving shaft 10 by screws.
  • An internally-toothed wheel 13 axially located by means of a pressure ring 14 whose securing screws 15 engage with the outer circumference of the wheel 13, is disposed at the end of the body 2 remote from the driving head 1, to mesh with the pinion 11.
  • a peg 16 passes through the pressure ring 14 and likewise engages with the outer periphery of the gear wheel 13.
  • the transmission ratio between the pinion 11 and the internally-toothed wheel 13 is, for example, 41:50.
  • a peg 17 eccentrically arranged on the outer face of the pinion 11 passes through the pressure ring 14 and carries at its free end a driving ball 18, which engages with a part-spherical shell 20 secured in a conical tool-holder 19.
  • 8 and pressure ring 14 have complementary part-spherical surfaces in mutual contact so that the tool holder 19 is capable of universal movement with reference to the ring 14.
  • a spring 22 interposed between the screw-cap 21 on the body 2 and a shoulder of the tool holder 19 constantly urges the latter towards the pressure ring 14.
  • a rivet-set 23 is inserted in the tool holder 19 and held in its working position by means of a magnet Z4 secured within such holder.
  • the working surface of the rivet-set is designed as a curve around the axis of the latter, so that a point at its centre lies substantially at the same height as the outer edge of the work surface, then a round rivet head with a central depression can be produced.
  • a higher rivet head has the advantage of a greater resistance to shearing.
  • Apparatus for forming locking heads on rivets comprising a body vfor attachment to a pressing head, a rotary member journalled in said body, means for driving said rotary member during operation of said pressing head, a shaft journalled in said rotary member for rotation about an axis eccentric thereto, a pinion xed to said shaft, an internally-toothed gear fixed to said body and meshing with said pinion, the transmission ratio being such that points on said pinion ⁇ describes a geometric figure selected from the group consisting of hypocycloids and cycloids intersecting the axis of said rotary member, and eccentrically-disposed peg on said pinion, a tool-holder mounted for universal movement upon said body and oscillatable relatively to the axis thereof by means of said peg, and a rivet-set detachably mounted in said holder.
  • the driving means for said rotary member comprises a driving shaft rotatable in said pressing head and having a rectangular nose engaging a diametral slot in the adjacent end of said rotary member.
  • Apparatus as claimed in claim 1 including a ring for axially locating said internally-toothed gear, and screws securing said ring to said body as well as locating said gear against circumferential movement.
  • Apparatus as claimed in claim 1 includingA a ring tixed to said internally-toothed gear, an annular cap attached to said body and enclosing said tool-holder, and spring means acting between said cap and said tool-holder to urge the latter into engagement with said ring, the coacting surfaces of said ring and tool-holder being partspherical and mutually complementary.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Insertion Pins And Rivets (AREA)
  • Gripping On Spindles (AREA)
US627152A 1966-07-27 1967-03-30 Apparatus for forming locking heads on rivets Expired - Lifetime US3440850A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM0070368 1966-07-27

Publications (1)

Publication Number Publication Date
US3440850A true US3440850A (en) 1969-04-29

Family

ID=7313435

Family Applications (1)

Application Number Title Priority Date Filing Date
US627152A Expired - Lifetime US3440850A (en) 1966-07-27 1967-03-30 Apparatus for forming locking heads on rivets

Country Status (7)

Country Link
US (1) US3440850A (de)
CH (1) CH450118A (de)
DE (1) DE1552838B1 (de)
FR (1) FR1519150A (de)
GB (1) GB1144016A (de)
NL (1) NL6709456A (de)
SE (1) SE349960B (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3653243A (en) * 1969-04-11 1972-04-04 Braecker Ag Device for forming closing heads at rivets
US3675461A (en) * 1969-10-24 1972-07-11 Claus Berndt Rivet head arrangement for a wobble riveting machine
US3703823A (en) * 1969-07-03 1972-11-28 Massey Ltd B & S Upsetting or forging machines
US3762199A (en) * 1972-02-19 1973-10-02 S Yoshikawa Rivet head forming tool
US3768289A (en) * 1971-10-29 1973-10-30 Vsi Corp Planetary head forming tool
US3779059A (en) * 1971-10-29 1973-12-18 Usi Corp Head forming tool
US3800579A (en) * 1971-02-24 1974-04-02 Langendorf Watch Co Wobble riveting machine
US3990285A (en) * 1974-12-05 1976-11-09 Vyskumny Ustav Mechanizacie A Automatizacie Method of and apparatus for shaping articles by rolling
US4131006A (en) * 1978-02-27 1978-12-26 The International Tool Company Fixed mechanical feed for a riveting device
CN102430686A (zh) * 2011-10-31 2012-05-02 武汉长江融达电子有限公司 摆碾铆接机
CN104741502A (zh) * 2013-12-30 2015-07-01 胡奎森 点式碾铆机
US9796014B2 (en) 2012-03-06 2017-10-24 Tkr Spezialwerkzeuge Gmbh Tool connection

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2348768A1 (fr) * 1976-04-21 1977-11-18 Vyzk Ustav Mech Installation pour le formage de pieces par roulage ponctuel
CH622723A5 (en) * 1977-11-15 1981-04-30 Braecker Ag Riveting machine
DE2933390C2 (de) * 1979-08-17 1981-09-17 Pitney Bowes Deutschland Gmbh, 6148 Heppenheim Verfahren und Vorrichtung zum Formen von Typen für Prägemaschinen o.dgl.
FR2612096B1 (fr) * 1987-03-12 1993-12-17 Lavigne Bernard Tete de rivetage
FR2660219A1 (fr) * 1990-03-28 1991-10-04 Parker Hannifin Rak Sa Machine a bouteroller.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1359625A (en) * 1918-10-10 1920-11-23 Edwin E Slick Method of and apparatus for making shafts
US3131746A (en) * 1960-01-11 1964-05-05 Walter E Streeter Device for spinning branches on pipes
US3173281A (en) * 1961-11-13 1965-03-16 Bodmer Gottfried Forming of the snap heads of rivets

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE294904C (de) *
AT31944B (de) * 1907-01-11 1908-02-25 Otto Briede Verfahren und Vorrichtung zur Herstellung von Nietköpfen u. dgl.
DE1192032B (de) * 1961-11-13 1965-04-29 Gottfried Bodmer Verfahren und Vorrichtung zum Formen von Schliesskoepfen an Kleinteilnieten durch Pressen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1359625A (en) * 1918-10-10 1920-11-23 Edwin E Slick Method of and apparatus for making shafts
US3131746A (en) * 1960-01-11 1964-05-05 Walter E Streeter Device for spinning branches on pipes
US3173281A (en) * 1961-11-13 1965-03-16 Bodmer Gottfried Forming of the snap heads of rivets

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3653243A (en) * 1969-04-11 1972-04-04 Braecker Ag Device for forming closing heads at rivets
US3703823A (en) * 1969-07-03 1972-11-28 Massey Ltd B & S Upsetting or forging machines
US3675461A (en) * 1969-10-24 1972-07-11 Claus Berndt Rivet head arrangement for a wobble riveting machine
US3800579A (en) * 1971-02-24 1974-04-02 Langendorf Watch Co Wobble riveting machine
US3768289A (en) * 1971-10-29 1973-10-30 Vsi Corp Planetary head forming tool
US3779059A (en) * 1971-10-29 1973-12-18 Usi Corp Head forming tool
US3762199A (en) * 1972-02-19 1973-10-02 S Yoshikawa Rivet head forming tool
US3990285A (en) * 1974-12-05 1976-11-09 Vyskumny Ustav Mechanizacie A Automatizacie Method of and apparatus for shaping articles by rolling
US4131006A (en) * 1978-02-27 1978-12-26 The International Tool Company Fixed mechanical feed for a riveting device
CN102430686A (zh) * 2011-10-31 2012-05-02 武汉长江融达电子有限公司 摆碾铆接机
US9796014B2 (en) 2012-03-06 2017-10-24 Tkr Spezialwerkzeuge Gmbh Tool connection
CN104741502A (zh) * 2013-12-30 2015-07-01 胡奎森 点式碾铆机

Also Published As

Publication number Publication date
FR1519150A (fr) 1968-03-29
NL6709456A (de) 1968-01-29
GB1144016A (en) 1969-03-05
CH450118A (de) 1968-01-15
DE1552838B1 (de) 1970-11-05
SE349960B (de) 1972-10-16

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