US3660885A - Pressure-operated tool - Google Patents

Pressure-operated tool Download PDF

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Publication number
US3660885A
US3660885A US17115A US3660885DA US3660885A US 3660885 A US3660885 A US 3660885A US 17115 A US17115 A US 17115A US 3660885D A US3660885D A US 3660885DA US 3660885 A US3660885 A US 3660885A
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US
United States
Prior art keywords
pressure
chamber
operated tool
defining
tool according
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
US17115A
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English (en)
Inventor
Lorenz Elflein
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Individual
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Individual
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Publication of US3660885A publication Critical patent/US3660885A/en
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Classifications

    • 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
    • B21J15/105—Portable riveters
    • 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
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53709—Overedge assembling means
    • Y10T29/53717—Annular work
    • Y10T29/53726—Annular work with second workpiece inside annular work one workpiece moved to shape the other
    • Y10T29/5373—Annular 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
    • Y10T29/53739—Pneumatic- or fluid-actuated tool

Definitions

  • the tool utilizes a pressure [51 1 Int Cl 1, 11/00 cylinder operation associated with one end of a pivotal lever whose other end operates the pressing or draw unit for axial [58] Fleld of Search ..29/2f13.53, 243.5, mofion ofthe latter.
  • the invention relates to a pressure-operated tool, in particular for setting of fastening elements, for example blind rivets, with a pneumatic or hydraulic drive means and a setting unit, in particular a pressing and/or draw unit, translatably movable through said drive means in a bearing housing.
  • the drive of known tools of the mentioned type is formed by a pneumatic and/or hydraulic cylinder-piston unit, the piston rod of which is guided with respect to the cylinder housing.
  • Said cylinder housing is arranged concentrically to said piston rod and is provided with parts of a chucking mechanism by engaging a blind rivet draw mandrel. Since the pressure required herefor can be obtained only with a large piston surface in the drive, these known tools are difficult to handle, tire the operating personnel very quickly due to their considerable weight and are suitable only when expensive, complicated and unhandy additional devices are used for operations in angle comers or other difiicult to reach working places.
  • the basic purpose of the invention is to further develop a tool of the above-mentioned type with means of simple construction in such a manner that it is suitable, without requiring additional devices, for operations in places which are difficult to reach and furthermore is lighter and'more handy than prior tools.
  • This is attained by causing the drive to engage the setting unit with a first lever arm-of a two-arm lever which is pivotably guided in a pressure tight manner through anopening in the wall of a cylinder chamber and projects to the outside thereof and further by causing the second lever arm to form together with the cylinder chamber a rotary or swiveling piston-cylinder unit.
  • the cylinder housing of the drive means projects only on one side radially from the bearing housing of the setting part so that the latter can be easily guided to working places which are difiicult to reach, for example into angle comers and can be used for many different operations.
  • the construction of the drive of the invention with a two-arm swiveling piston can, with the least structural load, assure a great force transmission by making the first lever arm considerably shorter than the second lever arm.
  • the swiveling piston can be constructed with only a small surface and is thereforeparticularly economical of space and yet provides a sufficient acting force to assure the capability of the tool for setting of blind rivets, punching of sheet metal, clamping of workpieces or piston being arranged inthe zone of the sector top.
  • Such a cylinder chamber can be manufactured at a small expense in large numbers including the bearing elements for the swiveling piston and can be gripped easily by hand so that it can be arranged as handle on the bearing housing of the setting means in the preferred embodiment of the tool.
  • the swiveling piston is formed by a section of a rod with flat rectangular cross section and is constructed at three front edges with a receiving groove for a seal.
  • FIG. 1 is a schematically illustrated vertical cross section of a worktool of the above-described type
  • FIG. "2 is a schematically illustrated front view of the tool according to FIG. 1.
  • a tool according to the drawings has a tubular bearing housing 1 for a setting unit 3 which is translatably movable ramlike in an axial direction by a hydraulic or pneumatic drive 2, and which setting unit is, for example, suitable for setting blind rivets in connection with a sethead or for punching of sheet metal in connection with a stamping head 5.
  • the bearing housing 1 and the sethead 3 each 'haveon both ends a receiving thread la or 30 for the sethead 4 or the stamping head 5 or other drawing and/or pressure devices.
  • the drive 2 of the tool of the invention has a two-arm lever 2a which pivotably engages a transverse slot 3b of the setting unit 3 with a short first lever arm 24a.
  • The'two-arm lever 2a furthermore has a second lever arm Zab which is substantially longer thanthe first lever arm 2aa and is supported pivotably pressure-tight between the lever arms by means of an axial bolt 2b in a wall opening'of a cylinder chamber 2c.
  • The'first lever arm 2aa of the two-arm lever 2a projects through the wall opening of thecylinder chamber 20 to the outside thereof and engages the setting unit 3 in the manner which has already been described.
  • At least the second lever arm Zab of the two-arm lever 2a is formedby a section of a bar with a flat rectangular cross sec tion and is provided at three from edges with a receiving groove'2ac for a cord seal 2d.
  • the second lever arm 2ab of the two-arm lever 2a forms togetherwith the cylinder'chamber 2a a rotary or swiveling piston cylinder unit which can be operated either in adouble-acting manner or against the force the cylinder chamber 2c forms an'easily grippable handle for the bearing housing 1.
  • the walls of the cylinder chamber 20 which extend parallel to the directionof piston movement are formed by cover plates 23,23 which are removably secured to their circular sector-shaped walls.
  • the apparatus which has been described as a'n-example has the particular advantage that, by using only one drive, holes can be punched and blind rivets can be placed into said holes.
  • the pressure acting on the setting unit can be increased by widening the lever arm Zab over its entire length or in the zone of its free end. Thus, the pressure surface is enlarged.
  • a pressure-operated tool having housing means, means defining a first opening in said housing means extending axially thereof, means defining a second opening in said housing means extending transverse to the axis of said first opening and a setting unit axially slidably mounted in said opening,
  • said setting unit having first connecting means thereon movable therewith, the improvement comprising:
  • pressurizable chamber means connected to said housing means; lever means and pivot means for pivotably securing said lever means on said chamber means, said lever means having a first arm extending outwardly of said chamber means from one side of said pivot means and into said second opening of said housing means, said first arm having second connecting means thereon coupled to said first connecting means, said lever means having a second arm, longer than said first arm, in said chamber means on the other side from said pivot means and defining a pivotable piston; and coupling means on said chamber means on one side of said pivotable piston for permitting an attachment of a source of pressurized fluid thereto, said pivotable piston being pivot-able in response to a pressurization of said chamber means by said pressurized fluid to thereby effect a movement of said setting unit axially of said housing means.
  • a pressure-operated tool including resilient means for urging said pivotable piston to one end of said chamber means.
  • said pivotable piston is composed of an elongated flat bar extending outwardly from said pivot means and having a rectangular cross section, said bar having means defining grooves along three edges thereof adjacent the walls of said chamber means and adapted to receive a seal slidably engageable with said walls of said chamber means.
  • a pressure-operated tool comprising an arcuate wall extending on a radius of said pivot means and a pair of side walls extending parallel to opposite edges of said pivotable piston and connected to said arcuate wall, said seal on said pivotable piston slidably engaging said pair of side walls and said arcuate wall, said walls of said chamber means further defining an easily grippable handle.
  • a pressure-operated tool according to claim 1, wherein said setting unit includes means defining first and second threaded connections on opposite ends thereof, said first threaded connection on one end being adapted to engage a sethead and said second threaded connection on the opposite end being adapted to engage a stamping head.
  • a pressure-operated tool according to claim 6, wherein said housing means includes means defining third and fourth threaded connections on opposite ends thereof, said third threaded connection on said one end being adapted to engage said sethead and said fourth threaded connection on said other end being adapted to engage said stamping head.
  • said pivot means includes means defining a seal between said chamber means and said housing means.
  • said chamber means comprises an arcuate wall extending on a radius of said pivot means, a pair of opposed side walls extending parallel to the direction of movement of said pivotable piston and being connected to said arcuate wall and a pair of inclined and opposed end walls, said arcuate wall, said side walls and said end walls defining an arcuate sector of a circle and an easily grippable handle, said pivot means being located at the center of said sector of said circle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Jigs For Machine Tools (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Paper (AREA)
US17115A 1969-04-21 1970-03-06 Pressure-operated tool Expired - Lifetime US3660885A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691920191 DE1920191B1 (de) 1969-04-21 1969-04-21 Druckmittelbetaetigtes Werkzeug

Publications (1)

Publication Number Publication Date
US3660885A true US3660885A (en) 1972-05-09

Family

ID=5731831

Family Applications (1)

Application Number Title Priority Date Filing Date
US17115A Expired - Lifetime US3660885A (en) 1969-04-21 1970-03-06 Pressure-operated tool

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Country Link
US (1) US3660885A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE1920191B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2039309A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1259337A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5469610A (en) * 1993-08-16 1995-11-28 Courian; Curtis C. Fastening tool and fastener

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE408384B (sv) * 1977-10-13 1979-06-11 Lindova Ab Verktyg for stansning av hal eller liknande i platmaterial
GB2190215B (en) * 1986-05-01 1989-12-13 Smiths Industries Plc Integrated circuit substrates and masks

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2053717A (en) * 1932-05-02 1936-09-08 Huxon Holding Corp Rivet setting machine
US2053720A (en) * 1932-05-28 1936-09-08 Huxon Holding Corp Riveting machine
US3088616A (en) * 1959-11-13 1963-05-07 Freda Tullio Sealing joint for bottle closure capsules
US3491578A (en) * 1965-09-08 1970-01-27 Hans Georg Biermann Manually operated riveting device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3122948A (en) * 1964-03-03 iwentorv
DE1133216B (de) * 1955-03-31 1962-07-12 Mohl & Decker Werkzeug Und App Hohlnietzange
FR1393491A (fr) * 1964-02-11 1965-03-26 Manuf Fr D Oeillets Metallique Appareil à commande hydraulique pour poser les rivets borgnes
US3280615A (en) * 1964-05-25 1966-10-25 Richline Co Inc Rivet gun

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2053717A (en) * 1932-05-02 1936-09-08 Huxon Holding Corp Rivet setting machine
US2053720A (en) * 1932-05-28 1936-09-08 Huxon Holding Corp Riveting machine
US3088616A (en) * 1959-11-13 1963-05-07 Freda Tullio Sealing joint for bottle closure capsules
US3491578A (en) * 1965-09-08 1970-01-27 Hans Georg Biermann Manually operated riveting device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5469610A (en) * 1993-08-16 1995-11-28 Courian; Curtis C. Fastening tool and fastener

Also Published As

Publication number Publication date
DE1920191B1 (de) 1970-10-22
GB1259337A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1972-01-05
FR2039309A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1971-01-15

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