Hydraulic installation tool

• US 5,598,619 A
• Filed: 05/09/1994
• Issued: 02/04/1997
• Est. Priority Date: 05/09/1994
• Status: Expired due to Term

• Current Assignee: Huck International Incorporated (Howmet Aerospace, Inc.)
• Original Assignee: Huck International Incorporated (Howmet Aerospace, Inc.)
• Inventors: Rosier, Hendrik E.
• Primary Examiner(s): JONES, DAVID B
• Application Number:
  US08/239,460
• Time in Patent Office: 1,002 Days
• Field of Search: 29/243.521, 29/243.523, 29/243.524
• US Class Current: 29/243.523
• CPC Class Codes: B21J 15/022 Setting rivets by means of swaged-on locking collars, e.g. lockbolts
• CPC Class Codes: B21J 15/045 and swaging locking means, i.e. locking the broken off mandrel head to the hollow rivet
• CPC Class Codes: B21J 15/20 operated by hydraulic or liquid pressure
• CPC Class Codes: Y10T 29/53739 Pneumatic- or fluid-actuated tool

Abstract

A hand held, hydraulically actuated installation tool installs multi-pieced fasteners having fastener components including a pin and a collar and/or sleeve by applying a relative axial force therebetween by a nose assembly which has a jaw structure for gripping the shank of the pin and an anvil for engaging the collar or sleeve and for severing a pintail portion of the shank after completion of the installation. A power cylinder housing is provided having a cylinder housing section and an integrally formed handle section with hydraulic passageways extending through the handle with internal parting to the cylinder housing. While the nose assembly can be readily installed and removed, the anvil member can be selectively rotated when the nose assembly is installed. A pintail deflector is located at the back end of the installation tool for deflecting the severed pintail portions away from the operator with the deflector having a generally elastomeric body portion with a wear plate adapted to receive the impact of the severed portions of fasteners being installed.

Claims

1. A hand held installation tool for installing multipiece fasteners of the type including a pin and a collar and/or sleeve with the pin having a pull portion and with the fastener adapted to be installed by the application of a predetermined relative axial force between the pin and the collar and/or sleeve, the improvement comprising:

power means including a pull piston having an enlarged piston head adapted for reciprocating axial movement and for providing a relative axial force during such axial movement,

installation means including jaw means having opened and closed positions and adapted to grip the pin of the fastener when in said closed position and to release the pin of the fastener when in said opened position,

said installation means further including anvil means adapted to engage the collar and/or sleeve of the fastener,

said installation means being operatively connected to said piston of said power means for transmitting said relative axial force of said piston between said jaw means and said anvil for applying said predetermined relative axial force between the pin and collar and/or sleeve when said jaw means has gripped the pin of the fastener and said anvil means is in engagement with the collar and/or sleeve of the fastener,

said installation means including jaw actuating means operable for moving said jaw means to said opened and closed positions,

said power means further including a power cylinder housing having a cylinder housing section and an integrally formed handle section depending from said cylinder housing section and adapted to be gripped by an operator,

said cylinder housing section having an axially extending cylinder bore adapted to receive said piston head of said pull piston for reciprocating movement therein, and

fluid passage means extending through said handle section, through the juncture integrally connecting said cylinder housing section and said handle section, and radially through said cylinder housing section directly into said cylinder bore for fluid communicating said cylinder bore on opposite sides of said piston head whereby said pull piston can be selectively reciprocated within said power cylinder housing,

said fluid passage means comprising a pair of generally parallely extending forward and rear passageways extending upwardly from the bottom of said handle section towards said cylinder housing section, a crossbore extending transversely to said pair of passageways and intersecting both of said pair of passageways near the juncture of said handle section with said cylinder housing section, a forward connecting passage extending substantially directly in line with the forward one of said passageways and into the forward portion of said cylinder bore, a rearward connecting passage extending angularly from the rearward end of said cylinder bore to said crossbore in communication with said rear passageway, seal means in said crossbore for sealing said pair of passageways from each other.

2. The installation tool of claim 1 with said rearward connecting passage located in a position relative to said rearward end of said cylinder bore whereby its axis extends angularly along a line outwardly through said rearward end of said cylinder bore and with a preselected clearance with the rearward end of said cylinder housing section.

3. A hand held installation tool for installing multipiece fasteners of the type including a pin and a collar and/or sleeve with the pin having a pull portion and with the fastener adapted to be installed by the application of a predetermined relative axial force between the pin and the collar and/or sleeve, the improvement comprising:

power means including a pull piston having an enlarged piston head adapted for reciprocating axial movement and for providing a relative axial force during such axial movement,

installation means including jaw means having opened and closed positions and adapted to grip the pin of the fastener when in said closed position and to release the pin of the fastener when in said opened position,

said installation means further including anvil means adapted to engage the collar and/or sleeve of the fastener,

said installation means being operatively connected to said piston of said power means for transmitting said relative axial force of said piston between said jaw means and said anvil for applying said predetermined relative axial force between the pin and collar and/or sleeve when said jaw means has gripped the pin of the fastener and said anvil means is in engagement with the collar and/or sleeve of the fastener,

said installation means including jaw actuating means operable for moving said jaw means to said opened and closed positions,

said power means further including a power cylinder housing having a cylinder housing section and an integrally formed handle section depending from said cylinder housing section and adapted to be gripped by an operator,

said cylinder housing section having an axially extending cylinder bore adapted to receive said piston head of said pull piston for reciprocating movement therein, and

fluid passage means extending through said handle section, through the juncture integrally connecting said cylinder housing section and said handle section, and radially through said cylinder housing section directly into said cylinder bore for fluid communicating said cylinder bore on opposite sides of said piston head whereby said pull piston can be selectively reciprocated within said power cylinder housing,

said handle section extending downwardly from the juncture of said handle section with said cylinder housing section for a distance of no less than around four inches,

said fluid passage means comprising a pair of generally parallely extending forward and rear passageways extending upwardly from the bottom of said handle section towards said cylinder housing section, a crossbore extending transversely to said pair of passageways from said switch bore and intersecting both of said pair of passageways near the juncture of said handle section with said cylinder housing section, a forward connecting passage extending substantially directly in line with the forward one of said passageways and into the forward portion of said cylinder bore, a rearward connecting passage extending angularly from the rearward end of said cylinder bore to said crossbore in communication with said rear passageway, seal means in said crossbore for sealing said pair of passageways from each other and for sealing said crossbore from said switch bore.

4. The installation tool of claim 3 with said rearward connecting passage located in a position relative to said rearward end of said cylinder bore whereby its axis extends angularly along a line outwardly through said rearward end of said cylinder bore and with a preselected clearance with the rearward end of said cylinder housing section.

5. A hand held installation tool for installing multipiece fasteners of the type adapted to be installed by the application of a predetermined relative axial force, the improvement comprising:

power means including a pull piston having an enlarged piston head adapted for reciprocating axial movement and for providing a relative axial force during such axial movement,

said power means further including a power cylinder housing having a cylinder housing section and an integrally formed handle section depending from said cylinder housing section and adapted to be gripped by an operator,

said cylinder housing section having an axially extending cylinder bore adapted to receive said piston head of said pull piston for reciprocating movement therein, and

fluid passage means extending through said handle section through the juncture integrally connecting said cylinder housing section and said handle section and radially through said cylinder housing section directly into said cylinder bore for fluid communicating said cylinder bore on opposite sides of said piston head whereby said pull piston can be selectively reciprocated within said power cylinder housing,

said fluid passage means comprising a pair of generally parallely extending forward and rear passageways extending upwardly from the bottom of said handle section towards said cylinder housing section, a crossbore extending transversely to said pair of passageways and intersecting both of said pair of passageways near the juncture of said handle section with said cylinder housing section, a forward connecting passage extending substantially directly in line with the forward one of said passageways and into the forward portion of said cylinder bore, a rearward connecting passage extending angularly from the rearward end of said cylinder bore to said crossbore in communication with said rear passageway, seal means in said crossbore for sealing said pair of passageways from each other.

6. The installation tool of claim 5 with said rearward connecting passage located in a position relative to said rearward end of said cylinder bore whereby its axis extends angularly along a line outwardly through said rearward end of said cylinder bore and with a preselected clearance with the rearward end of said cylinder housing section.

7. A hand held installation tool for installing multipiece fasteners of the type adapted to be installed by the application of a predetermined relative axial force, the improvement comprising:

power means including a pull piston having an enlarged piston head adapted for reciprocating axial movement and for providing a relative axial force during such axial movement,

said power means further including a power cylinder housing having a cylinder housing section and an integrally formed handle section depending from said cylinder housing section and adapted to be gripped by an operator,

said cylinder housing section having an axially extending cylinder bore adapted to receive said piston head of said pull piston for reciprocating movement therein, and

fluid passage means extending through said handle section through the juncture integrally connecting said cylinder housing section and said handle section and radially through said cylinder housing section directly into said cylinder bore for fluid communicating said cylinder bore on opposite sides of said piston head whereby said pull piston can be selectively reciprocated within said power cylinder housing,

a manually actuable electrical switch located in an enlarged switch bore in the forward side of said handle section proximate to the juncture of said handle section with said cylinder housing section,

said fluid passage means comprising a pair of generally parallely extending forward and rear passageways extending upwardly longitudinally from the bottom of said handle section towards said cylinder housing section, a crossbore extending transversely to said pair of passageways from said switch bore and intersecting both of said pair of passageways near the juncture of said handle section with said cylinder housing section, a forward connecting passage extending substantially directly in line with the forward one of said passageways and into the forward portion of said cylinder bore, a rearward connecting passage extending angularly from the rearward end of said cylinder bore to said crossbore in communication with said rear passageway, seal means in said crossbore for sealing said pair of passageways from each other and for sealing said crossbore from said switch bore.

8. The installation tool of claim 7 with said rearward connecting passage located in a position relative to said rearward end of said cylinder bore whereby its axis extends angularly along a line outwardly through said rearward end of said cylinder bore and with a preselected clearance with the rearward end of said cylinder housing section.

9. In an installation tool for installing multipiece fasteners of the type including a pin and a collar and/or sleeve with the pin having a shank with a pull portion and with the fastener adapted to be installed by the application of a predetermined relative axial force between the pin and the collar and/or sleeve, and with the pin shank having a weakened section adapted to fracture at a preselected magnitude of relative axial force substantially at the completion of the setting action whereby the pull portion is removed, said installation tool including:

power means including a pull piston having an enlarged piston head adapted for reciprocating axial movement and for providing a relative axial force during such axial movement,

installation means including jaw means having opened and closed positions,

said power means further including a power cylinder housing having a cylinder housing section and a handle section depending from said cylinder housing section,

an ejection passage extending axially through said pull piston and adapted to receive the severed pull portion for ejection rearwardly out from said installation tool, the improvement comprising;

a deflector adapted to be secured to the rearward end of said cylinder housing section, and including a deflection portion extending in line with and over said passageway to receive the impact of the severed pull portion, said deflector being constructed of an elastomeric material and having a wear plate at said deflector portion to receive the impact of the severed pull portion, said wear plate being constructed of a hardened, wear resistant material,

said deflector including securing means on said deflector and said cylinder housing for securing said deflector to said cylinder housing and permitting selective rotation of said deflector generally around the axis of said ejector passage, said deflector having a discharge opening extending generally between said deflector portion and said securing means for permitting ejection of the severed pull portion and whereby said deflector can be rotated to radially position said discharge opening to eject the severed pull portions in a direction selected by the operator,

said deflector being of a one piece body of elastomeric material with said wear plate being a separate metal member secured to said deflection portion,

said deflector portion having a generally arcuate shape with said wear plate being constructed from a portion of a tube having a generally similar arcuate shape.

10. An installation tool for installing multipiece fasteners of the type including a pin having a shank and a collar and/or sleeve with the pin having a shank with a pull portion and with the fastener adapted to be installed by the application of a predetermined relative axial force between the pin and the collar and/or sleeve, the improvement comprising:

a power cylinder assembly including a cylinder housing and a piston adapted for reciprocating axial movement in said cylinder housing and for providing a relative axial force during such axial movement,

a nose assembly removably secured to said cylinder housing and having an anvil housing having an anvil portion with an opening at one end adapted to receive the shank of the pin, a collet assembly slidably supported in said anvil housing and connected to said piston for reciprocating axial movement therewith,

said collet assembly having a collet and jaw means supported in said collet having opened and closed positions and adapted to grip the pull portion of the pin shank when in said closed position and to release the pull portion of the pin shank when in said opened position,

said anvil portion adapted to engage the collar and/or sleeve of the fastener,

said anvil housing and said collet assembly being operatively connected to said cylinder housing and to said piston for transmitting said relative axial force of said piston between said jaw means and said anvil portion of said anvil housing for applying said predetermined relative axial force between the pin and collar and/or sleeve when said jaw means has gripped the pull portion of the pin shank and said anvil portion is in engagement with the collar and/or sleeve of the fastener,

said collet assembly including jaw actuating means operable for moving said jaw means to said opened and closed positions and including resilient spring means operative on said jaw means for providing a spring bias on said jaw means to move said jaw means to said closed position,

said piston including a piston rod portion having a threaded outer end,

said collet having an enlarged bore at its rearward end adapted to be threadably engaged with said threaded outer end of said piston rod portion whereby said collet assembly will be axially reciprocated by said piston,

said threaded outer end of said piston rod portion having a plurality of axially extending slots, said collet having a radially extending locking bore extending through said enlarged bore with a locking ball assembly located therein, said locking ball assembly including a ball member radially movable into a selected one of said slots while remaining at least partially in said locking bore, said anvil housing being located over said collet to capture said ball member in said locking bore and said slot whereby said collet and said piston rod portion are locked together from relative rotation, mounting means removably securing said anvil housing to said cylinder housing.

11. The installation tool of claim 10 with said mounting means securing said anvil housing to said cylinder housing while permitting selective relative rotation therebetween.

12. A hand held installation tool for installing multipiece fasteners of the type including a pin and a collar and/or sleeve with the pin having a pull portion and with the fastener adapted to be installed by the application of a predetermined relative axial force between the pin and the collar and/or sleeve, the improvement comprising:

power means including a pull piston having an enlarged piston head adapted for reciprocating axial movement and for providing a relative axial force during such axial movement,

installation means including jaw means having opened and closed positions and adapted to grip the pin of the fastener when in said closed position and to release the pin of the fastener when in said opened position,

said installation means further including anvil means adapted to engage the collar and/or sleeve of the fastener,

said installation means being operatively connected to said pull piston for transmitting said pull relative axial force of said piston between said jaw means and said anvil for applying said predetermined relative axial force between the pin and collar and/or sleeve when said jaw means has gripped the pin of the fastener and said anvil means is in engagement with the collar and/or sleeve of the fastener,

said installation means including jaw actuating means operable for moving said jaw means to said opened and closed positions,

said power means further including a power cylinder housing having a cylinder housing section and an integrally formed handle section depending from said cylinder housing section and adapted to be gripped by an operator,

said cylinder housing section having an axially extending cylinder bore adapted to receive said piston head of said pull piston for reciprocating movement therein, and

fluid passage means extending through said handle section, through the juncture integrally connecting said cylinder housing section and said handle section and radially through said cylinder housing section directly into said cylinder bore for fluid communicating said cylinder bore on opposite sides of said piston head whereby said pull piston can be selectively reciprocated within said power cylinder housing,

a deflector adapted to be secured to the rearward end of said cylinder housing section, and including a deflection portion extending in line with and over said passageway to receive the impact of the severed pull portion, said deflector being constructed of an elastomeric material and having a wear plate at said deflector portion to receive the impact of the severed pull portion, said wear plate being constructed of a hardened, wear resistant material,

said pull piston including a piston rod portion having a threaded outer end,

said collet having an enlarged bore at its rearward end adapted to be threadably engaged with said threaded outer end of said piston rod portion whereby said collet assembly will be axially reciprocated by said pull piston,

said threaded outer end of said piston rod portion having a plurality of axially extending slots, said collet having a radially extending locking bore extending through said enlarged bore with a locking ball assembly located therein, said locking ball assembly including a ball member radially movable into a selected one of said slots while remaining at least partially in said locking bore, said anvil housing being located over said collet to capture said ball member in said locking bore and said slot whereby said collet and said piston rod portion are locked together from relative rotation, mounting means removably securing said anvil housing to said cylinder housing.

13. The installation tool of claim 12 with said mounting means securing said anvil housing to said cylinder housing while permitting selective relative rotation therebetween.

14. The installation tool of claim 12 further comprising a manually actuable electrical switch located in an enlarged switch bore in the forward side of said handle section proximate to the juncture of said handle section with said cylinder housing section,

said handle section extending downwardly from the juncture of said handle section with said cylinder housing section for a distance of no less than around four inches,

said fluid passage means comprising a pair of generally parallely extending forward and rear passageways extending upwardly longitudinally from the bottom of said handle section towards said cylinder housing section, a crossbore extending transversely to said pair of passageways from said switch bore and intersecting both of said pair of passageways near the juncture of said handle section with said cylinder housing section, a forward connecting passage extending substantially directly in line with the forward one of said passageways and into the forward portion of said cylinder bore, a rearward connecting passage extending angularly from the rearward end of said cylinder bore to said crossbore in communication with said rear passageway, seal means in said crossbore for sealing said pair of passageways from each other and for sealing said crossbore from said switch bore.

15. The installation tool of claim 14 with said rearward connecting passage located in a position relative to said rearward end of said cylinder bore whereby its axis extends angularly along a line outwardly through said rearward end of said cylinder bore and with a preselected clearance with the rearward end of said cylinder housing section.