Claims
- 1. A device for swaging a ferrule onto the periphery of a cylindrical member comprising:
- a first piston mounted for reciprocation within a body;
- an anvil member drivingly connected to said first piston and having a recess in one end to receive an end of the cylindrical member;
- a camming means associated with said anvil member for camming a ferrule carried on the end of the cylindrical member into tight peripheral engagement therewith; and,
- a second piston mounted for reciprocation within said body in spaced relation to said first piston, wherein a movement of said second piston is necessary in order to move said first piston and wherein an unexpandible chamber is located between said first and second pistons, said chamber holding a constant amount of fluid.
- 2. The device of claim 1 further comprising a gauge means for measuring the movement of said camming means relative to the body, wherein said gauge means is secured to one of said camming means and said body and comprises:
- an articulated signal member, comprising:
- a first arm,
- a second arm which is secured to one end of said first arm and is selectively pivotable thereabout,
- a means for urging said second arm to one end position in relation to said first arm, said means for urging being secured to at least one of said first arm and said second arm and being in operative connection with the other of said first arm and said second arm;
- a biasing means for moving said signal member from a first to a second position; and,
- a means for holding said signal member in said first position until a predetermined amount of relative movement has taken place between said camming means and said body at which time said signal member is caused to move suddenly to said second position under the action of said biasing means.
- 3. The device of claim 2 further comprising a shaft to which said first piston and anvil members are secured and wherein said gauge means further comprises a knob, wherein one of said knob and said signal member is mounted on said shaft and the other is mounted on said body.
- 4. The device of claim 3 wherein said means for holding comprises a latch means between said second arm and said knob for releasing said signal member to move away from said knob upon a movement of said piston through a measured distance.
- 5. The device of claim 4 wherein said latch means comprises an annular groove in one face of said knob and a protuberance on said second arm for projecting into said groove to hold said signal member stationary against the bias of said biasing means, wherein a radially outer wall of said groove has an approximately 5.degree. undercut and said protuberance has a mating configuration.
- 6. The device of claim 1 further comprising a first biasing means for biasing said first and second pistons away from each other.
- 7. The device of claim 1 further comprising:
- a shaft reciprocably mounted in said body to which shaft said first piston is secured and on which shaft said second piston is slidably mounted;
- a first piston chamber in said body in which said first piston reciprocates;
- a second piston chamber in said body in which said second piston reciprocates; and,
- a second biasing means for biasing said shaft to one end position.
- 8. The device of claim 7 further comprising a nut retaining cap for retaining a nut positioned on the cylindrical member, said cap having a flanged outer lip and wherein said cylinder housing includes a T-slot in which said retaining cap is slidably mounted.
- 9. The device of claim 8 further comprising a first retaining means for securing said cap in a position coaxial with said cylinder housing bore and said base member bore.
- 10. The device of claim 8 further comprising a second retaining means for securing said cap in a position spaced away from being coaxial with said cylinder housing bore and said base member bore.
- 11. The device of claim 8 wherein said retaining cap further comprises at least two U-shaped inserts which can be separately accommodated in said cap, each insert having a central opening of a diameter suited for use with a cylindrical member of an appropriate diameter whereby cylindrical members and associated nuts of different diameters can be accommodated by a common cap through the use of different inserts.
- 12. The device of claim 1 wherein said anvil further comprises an indicating means for signaling both when the ferrule is missing and when the ferrule is incorrectly positioned on the cylindrical member.
- 13. The device of claim 1 further comprising a first stop means for preventing a movement of said first piston past a preselected first point.
- 14. The device of claim 1 further comprising a second stop means for preventing a movement of said second piston past a preselected second point.
- 15. The device of claim 1 further comprising a third stop means for preventing a movement of said anvil member past a preselected third point.
- 16. Apparatus for swaging a ferrule onto the periphery of a cylindrical member comprising:
- a first piston mounted for reciprocation within a body;
- an anvil member cooperatively associated for movement with said first piston;
- a cylindrical recess in said anvil member for receiving the end of a cylindrical member and said anvil member including a camming mouth;
- a means carried by said body for connection thereto of a means for (a) aligning the cylindrical member with said recess and (b) limiting an axial movement of a ferrule received over the end of the cylindrical member and a coupling nut received over the ferrule wherein said means for aligning said cylindrical member and limiting axial movement of the ferrule and the coupling nut comprises a retaining cap slidably disposed in a T-shaped slot which is provided on said body; and,
- a pressure means connected in fluid communication with the interior of said body for driving said first piston toward the ferrule, said pressure means comprising a second piston.
- 17. The apparatus of claim 16 wherein said pressure means further comprises a fluid pump, said body including a first piston chamber in which said first piston reciprocates and a second piston chamber in which said second piston reciprocates and wherein said fluid pump communicates with said second piston chamber.
- 18. The apparatus of claim 17 wherein said body includes an internal wall, said wall defining a separation plane between said first and second piston chambers.
- 19. The apparatus of claim 17 further comprising a biasing means for biasing said first piston away from said second piston.
- 20. The apparatus of claim 16 wherein one end of said body includes a T-slot in which said retaining cap is adapted to slide and further comprising a retaining means for holding said retaining cap in a desired position in relation to said body.
- 21. The apparatus of claim 19 wherein said retaining cap comprises:
- an annular body portion having first and second ends;
- an outwardly flaring end section provided on the first end of said annular body portion; and,
- an end wall on said second end of said annular body portion, said end wall extending radially inwardly of said annular body portion to a centrally disposed aperture opening to the interior of said annular body portion.
- 22. The apparatus of claim 21 wherein said retaining cap annular body portion has a cavity therein which is suitably sized so as to receive a nut received over the end of the cylindrical member.
- 23. The apparatus of claim 22 wherein said retaining cap further comprises:
- at least one U-shaped insert which can be selectively accommodated in said cap, said at least one insert having a central opening of a diameter suited for use with a cylindrical member of an appropriate diameter so that cylindrical members, and nuts, of different diameters can be accommodated in said cap by the provision of inserts having central openings of an appropriate diameter; and,
- a retaining means for selectively retaining said at least one insert in said cap.
- 24. The apparatus of claim 22 wherein said anvil member is substantially cylindrical in shape and has an outer diameter just smaller than an inner diameter of the nut so that said anvil can extend within the nut.
- 25. Apparatus for pre-swaging to the outer surface of a cylindrical member the ferrules of fittings of the type including a threaded coupling nut having an internal opening and adapted to encircle the cylindrical member and an associated ferrule positioned on the cylindrical member, said apparatus comprising:
- a first means for engaging and positioning the end of a cylindrical member on which the fitting is connected;
- a camming means associated with said first means and sized to extend inwardly from the end of said member between the outer periphery of the member and the internal opening of the coupling nut;
- a second means for engaging said coupling nut, said second means comprising a retaining cap that is slidably disposed in a T-shaped slot such that the cap selectively encloses said coupling nut; and,
- a power means for producing a relative movement toward one another of said camming means and the coupling nut to cause a ferrule positioned therebetween to be swaged on the outer surface of said cylindrical member, said power means comprising:
- a first piston, and
- a second piston spaced from said first piston.
- 26. The apparatus of claim 25 wherein a ratio of surface areas of said first and second pistons acting on a fluid located between said pistons is greater than approximately 5 to 1.
- 27. The apparatus of claim 26 wherein said ratio of surface areas is approximately 16 to 1.
- 28. The apparatus as defined in claim 25 wherein said first means comprises a recess sized to receive said cylindrical member and wherein said camming means is positioned about said recess.
- 29. The apparatus as defined in claim 25 further comprising a means for indicating when sufficient relative movement has taken place between said camming means and the coupling nut.
- 30. The apparatus of claim 25 wherein said retaining cap comprises:
- an annular body portion having first and second ends;
- an outwardly flaring end section provided on the first end of said annular body portion; and,
- an end wall located on said second end of said annular body portion, said end wall extending radially inwardly of said annular body portion to a centrally disposed aperture opening to the interior of said annular body portion.
- 31. The apparatus of claim 30 further comprising a body in which said T-shaped slot is defined and said first means is reciprocatingly mounted and wherein said retaining cap has a flanged outer lip for slidably mounting said cap in said T-shaped slot.
- 32. The apparatus of claim 31 further comprising a locking means for selectively securing said retaining cap in a preselected position in said cylinder housing T-slot.
- 33. A swaging tool for swaging a ferrule onto an outer periphery of a cylindrical member, the tool comprising:
- a swaging anvil for swaging the ferrule onto the outer periphery of the cylindrical member;
- a frame for supporting and aligning said swaging anvil with the cylindrical member, wherein said swaging anvil can selectively move with respect to said frame; and,
- independently actuated signal means operably secured to one of said frame and said swaging anvil for indicating adequate swaging of the ferrule in response to a gauged relative movement between said frame and said swaging anvil, said signal means including:
- an articulated signal member comprising:
- a first arm,
- a second arm which is secured to one end of said first arm and is selectively pivotable thereabout,
- a means for urging said second arm to one end position in relation to said first arm,
- a latching means for securing said signal member in one end position, and
- a means for biasing said signal member to swing away from said one end position upon adequate swaging of said ferrule.
- 34. The tool of claim 33 wherein said latching means includes a protuberance projecting from said second arm into a groove in a knob which recedes from said protuberance as the swaging operation progresses.
- 35. The tool of claim 34 wherein a length of engagement of said protuberance in said groove is substantially equal to the length of the relative movement between said frame means and said swaging means to cause adequate swaging.
- 36. The tool of claim 34 wherein said knob is operatively connected to said swaging means.
- 37. The tool of claim 36 further comprising:
- a shaft extending in said frame, wherein both said swaging anvil and said knob are fixedly secured to said shaft;
- a biasing means for resiliently urging said shaft in a first direction in said frame; and,
- a pressure means for selectively urging said shaft in a second direction in opposition to said biasing means.
- 38. The tool of claim 37 wherein said pressure means comprises a first piston which is actuated by a pressurized fluid to move in said second direction.
- 39. The tool of claim 38 wherein said pressure means further comprises a second piston which pressurizes said pressurized fluid that actuates said first piston.
- 40. The tool of claim 33 further comprising a base on which said frame can be mounted.
- 41. A device for swaging a ferrule onto the periphery of a cylindrical member comprising:
- a first piston mounted for reciprocation within a body;
- an anvil member drivingly connected to said first piston and having a recess in one end to receive an end of the cylindrical member;
- a camming means associated with said anvil member for camming a ferrule carried on the end of the cylindrical member into tight peripheral engagement therewith;
- a second piston mounted for reciprocation within said body in spaced relation to said first piston, wherein a movement of said second piston is necessary in order to move said first piston; and,
- a mechanical resilient means for urging said first and second pistons away from each other, said mechanical resilient means being located between said first and second pistons.
- 42. The device of claim 41 further comprising a nut retaining cap for retaining a nut positioned on the cylindrical member, said cap having a flanged outer lip and wherein said cylinder housing includes a T-slot in which said retaining cap is slidably mounted.
- 43. The device of claim 41 wherein said anvil further comprises an indicating means for signaling both when the ferrule is missing and when the ferrule is incorrectly positioned on the cylindrical member.
- 44. The device of claim 41 further comprising a gauge means for measuring the movement of said camming means relative to the body, wherein said gauge means is secured to one of said camming means and said body and comprises:
- an articulated signal member, comprising:
- a first arm
- a second arm which is secured to one end of said first arm and is selectively pivotable thereabout,
- a means for urging said second arm to one end position in relation to said first arm, said means for urging being secured to at least one of said first arm and said second arm and being in operative connection with the other of said first arm and said second arm;
- a biasing means for moving said signal member from a first to a second position; and,
- a means for holding said signal member in said first position until a predetermined amount of relative movement has taken place between said camming means and said body at which time said signal member is caused to move suddenly to said second position under the action of said biasing means.
- 45. The device of claim 41 further comprising:
- a shaft reciprocally mounted in said body to which shaft said first piston is secured and on which shaft said second piston is slidably mounted;
- a first piston chamber in said body in which said first piston reciprocates;
- a second piston chamber in said body in which said second piston reciprocates; and,
- a biasing means for urging said shaft to one end position.
- 46. The device of claim 45 wherein said first piston chamber is unexpandible and holds a constant amount of a fluid.
- 47. The device of claim 45 wherein said mechanical resilient means comprises a spring which is coiled around said shaft.
- 48. The device of claim 41 further comprising a first stop means for preventing a movement of said first piston past a preselected first point.
- 49. The device of claim 41 further comprising a second stop means for preventing a movement of said second piston past a preselected second point.
- 50. The device of claim 41 further comprising a third stop means for preventing a movement of said anvil member past a preselected third point.
Parent Case Info
This application is a continuation-in-part of application Ser. No. 198,775 filed on May 25, 1988 now U.S. Pat. No. 4,873,755.
US Referenced Citations (21)
Foreign Referenced Citations (2)
Number |
Date |
Country |
2317757 |
Oct 1974 |
DEX |
2033811 |
May 1980 |
GBX |
Continuation in Parts (1)
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Number |
Date |
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Parent |
198775 |
May 1988 |
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