US3714810A - Blind rivet pulling tool - Google Patents

Blind rivet pulling tool Download PDF

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Publication number
US3714810A
US3714810A US00094796A US3714810DA US3714810A US 3714810 A US3714810 A US 3714810A US 00094796 A US00094796 A US 00094796A US 3714810D A US3714810D A US 3714810DA US 3714810 A US3714810 A US 3714810A
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US
United States
Prior art keywords
cylinder block
piston
additional
rivet
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
US00094796A
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English (en)
Inventor
C Boyd
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.)
Spurway S Ind Pty Ltd
Original Assignee
Spurway S Ind Pty Ltd
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Filing date
Publication date
Application filed by Spurway S Ind Pty Ltd filed Critical Spurway S Ind Pty Ltd
Application granted granted Critical
Publication of US3714810A publication Critical patent/US3714810A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00Riveting
    • B21J15/10Riveting machines
    • B21J15/105Portable riveters
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/53Means to assemble or disassemble
    • Y10T29/53709Overedge assembling means
    • Y10T29/53717Annular work
    • Y10T29/53726Annular work with second workpiece inside annular work one workpiece moved to shape the other
    • Y10T29/5373Annular work with second workpiece inside annular work one workpiece moved to shape the other comprising driver for snap-off-mandrel fastener; e.g., Pop [TM] riveter
    • Y10T29/53739Pneumatic- or fluid-actuated tool

Definitions

  • This invention relates to pneumatically operated tools for heading blind rivets; that is, tools whereby a blind rivet is applied to the work from one side thereof (the near-side) and, working from the near-side, a head is formed on the rivet on the'far-side of the work.
  • Such blind rivets comprise a tubular shank having a head on one end; when they are to be applied to the work the stem of a mandrel (consistingof a stern and a head) is inserted in the bore of the rivet so that the mandrel head is disposed at the unheaded end of the rivet, the mandrel stern then projects from the headed end of the rivet.
  • the rivet with its mandrel so inserted is then applied to the tool, being held therein by a chuck forming part of the tool taking hold of the projecting end portion of the mandrel stem; with the rivet so held the rivet shank is inserted in the rivet hole in the work and while the headed end of the rivet is held hard against the near-side of the work the tool pulls on the mandrel so that its head de-forms the far-side end of the rivet thus to give it a far-side head and at the same time clinch it tightly relative to the work.
  • mandrel stem continues pulling on the mandrel stem causes it to break, so that its headed end remains with the work (or falls from the work on the far-side thereof) and the broken end portion of the stem remains with the tool and may be discarded in any convenient manner.
  • mandrel stems are preferably provided with a circumferential weakening groove.
  • Rivet pulling tools of the kind in question are already well known, they are operated by use of compressed air as working fluid and they have proved entirely suited to the work.
  • a major disability however is that different sized rivets and mandrels therefore call for different degrees of pulling load to be applied to the mandrel stems to ensure them clinching in the work effectively.
  • the pulling tools used heretofore have been made in a number a different sizes corresponding to the number of different sized rivets employed. This means for example, that if a user wishes to employ three different sizes of rivets then he is faced with having to purchase three entire pulling tools.
  • the object of this invention is to overcome the indicated disability in a very simple way by the provision of a blind rivet pulling tool which can be made as a minimum capacity tool, and with minor addition or additions thereto maybe readily modified to suit any required higher capacity, thus irrespective of the required size of the tool, most of its parts may be used in common with various differently sized adaptations of the tool.
  • the invention consists in a blind rivet pulling tool comprising a hand-piece, a cylinder block mounted on said hand-piece, a front cover for said cylinder block, a mounting tube which extends concentrically and forwardly of said cover, a tubular dolly button in the forward end of said tube into which the stem ofa mandrel associated with a tubular rivet may be inserted, chucking means inside said mounting tube able to take hold of the near end of a mandrel stem inserted in said dolly button, a piston rod whereon said chucking means are mounted and which extends into said cylinder block, a piston fixed on said piston rod for working movement within said cylinder block, and
  • manually controllable valve and port means associated 'a working fluid under pressure may be admitted to said cylinder block for operation of said piston.
  • FIG. 1 is a medial section side elevation of a rivet pulling tool of minimum capacity
  • FIGS. 2 and 3 are similar views of two higher capacity tools respectively; I
  • FIG. 4 shows the hand-piece porting arrangements for a hand-piece of the kind shown in FIGS. 2 and 3.
  • the hand-piece 4 has the cylinder block 5 mounted on it by way of set screws or the like (not shown).
  • the hand-piece and the block each have flat mating surfaces 6 and 7 which constitute suitable porting faces (see FIG. 4).
  • the cylinder block of FIG. 1 comprises a single chamber 8 which is closed at its forward end by cover 9.
  • Cover 9 and block 5 are bolted together as indicated at 10.
  • Cover 9 carries a mounting tube consisting of forward portion 11 which screws within rearward portion 12.
  • the forward end of this mounting tube carries the tubular dolly button indicated at 13.
  • This button has a bore 14 which is able neatly to receive the mandrel stem of a tubular rivet.
  • a conventional chucking device is included within the forward end of the mounting tube; it consists of a frusto-conical array of jaws 15 which are squeezed together to take hold of a rivet mandrel stem by rearward movement of conical sleeve 16 assisted by thrust block 17 thrust forwardly by spring 18; the sleeve 16 is fixed on the forward end of piston rod 19 which carries piston 20 furnished with cushioning washer 21.
  • FIG. 2 When a larger capacity pulling tool is required the arrangement shown in FIG. 2 may be employed.
  • the parts of this embodiment which are common to it and the arrangement shown in FIG. 1 will be apparent from the drawings.
  • handle 4a is identical to handle 4 except for having been provided with a rearward extension 30.
  • the cylinder block now consists of two chambers 8 and 8a; chamber 8 being the same as that marked by the same number in FIG. 1 and chamber 8a also being exactly the same except for its rearmost bead 31 having been machined to provide a step into which the forward end of chamber 8 is inserted.
  • the porting arrangement is such that both of the cylinders 8 and 8a operate as though they were a single cylinder in the same way as described with referenceto FIG. 1. That is to say, when button 22 is depressed compressed air proceeds to ports 25 and 25a while ports 26 and 26a are open to atmosphere. Similarly, during the return stroke compressed air is admitted to the cylinder by way of ports 26 and 260 while ports 25 and 25a are open to atmosphere.
  • FIG. 1 Another difference between FIG. 1 and FIG. 2 is that in providing two pistons and 20a the piston rod 19a is necessarily extended.
  • FIG. 3 It is believed that the form of the invention illustrated in FIG. 3 will be virtually self-explanatory in that it merely adds a further cylinder chamber 8b to those previously referred to and numbered 8a and 8.
  • the port 26 may be permanently open to atmosphere thus permitting the handpiece 4b to be virtually the same as that shown in FIG. 2.
  • the reason for this is that the return stroke of the piston assembly needs far less power than the working stroke in which'the mandrel stem is tensioned to the point of breakage.
  • pistons 8a and 8b alone are sufficiently powerful for executing the return stroke of the piston rod.
  • a blind rivet pulling tool comprising a hand-piece
  • said tube into which the stern of a mandrel associated with a tubular rivet may be inserted, chucking means inside said mounting tube able to take hold of the near end of a mandrel stem inserted in said dolly button, a first piston rod whereon said chucking means are mounted and which extends into said first cylinder block, a first piston fixed on said first piston rod for working movement within said first cylinder block, at least one additional cylinder block co-axially secured to the first cylinder block,'an additional piston in said additional cylinder block, an extension of said first piston rod for mounting said additional piston, and port means in said additional cylinder block whereby the additional piston is operable concertedly with the first piston, and manually controllable valve and port means associated with said hand-piece and said cylinder blocks, whereby a working fluid under pressure may be admitted to said cylinder blocks for operation of said pistons.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)
  • Insertion Pins And Rivets (AREA)
US00094796A 1969-12-23 1970-12-03 Blind rivet pulling tool Expired - Lifetime US3714810A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU6568069 1969-12-23

Publications (1)

Publication Number Publication Date
US3714810A true US3714810A (en) 1973-02-06

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ID=3750348

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Application Number Title Priority Date Filing Date
US00094796A Expired - Lifetime US3714810A (en) 1969-12-23 1970-12-03 Blind rivet pulling tool

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US (1) US3714810A (enrdf_load_html_response)
JP (1) JPS5016029B1 (enrdf_load_html_response)
DE (1) DE2062728A1 (enrdf_load_html_response)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4587829A (en) * 1985-07-03 1986-05-13 Huck Manufacturing Co. Lightweight, high pressure fastener installation tool and system
US6907648B2 (en) * 2003-01-21 2005-06-21 Textron Inc. Riveting tool such as a nut plate riveter
US7107814B2 (en) * 2000-06-14 2006-09-19 Hans Oetiker Ag, Maschinen Und Apparatefabrik Pneumatic precision pliers
CN103769523A (zh) * 2012-10-24 2014-05-07 汉达精密电子(昆山)有限公司 自动打拉钉机构

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2537792C3 (de) * 1975-08-25 1986-11-13 Alfred Honsel Nieten - und Metallwarenfabrik GmbH & Co, 5758 Fröndenberg Blindnietgerät

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3164283A (en) * 1963-05-15 1965-01-05 Glenn V Olson Power rivet gun
US3457763A (en) * 1966-11-30 1969-07-29 Scovill Manufacturing Co Blind rivet tool

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4829907A (enrdf_load_html_response) * 1971-08-25 1973-04-20

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3164283A (en) * 1963-05-15 1965-01-05 Glenn V Olson Power rivet gun
US3457763A (en) * 1966-11-30 1969-07-29 Scovill Manufacturing Co Blind rivet tool

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4587829A (en) * 1985-07-03 1986-05-13 Huck Manufacturing Co. Lightweight, high pressure fastener installation tool and system
US7107814B2 (en) * 2000-06-14 2006-09-19 Hans Oetiker Ag, Maschinen Und Apparatefabrik Pneumatic precision pliers
US6907648B2 (en) * 2003-01-21 2005-06-21 Textron Inc. Riveting tool such as a nut plate riveter
CN103769523A (zh) * 2012-10-24 2014-05-07 汉达精密电子(昆山)有限公司 自动打拉钉机构

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Publication number Publication date
JPS5016029B1 (enrdf_load_html_response) 1975-06-10
DE2062728A1 (de) 1971-07-08

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