TOOL FOR TORQUING AND CRIMPING FASTENERS

• US 3,792,632 A
• Filed: 09/14/1971
• Issued: 02/19/1974
• Est. Priority Date: 09/14/1971
• Status: Expired due to Term

• Current Assignee: William E. Pinkerton
• Original Assignee: William E. Pinkerton
• Inventors: Pinkerton, William E.
• Primary Examiner(s): Jones, Jr., James L.
• Assistant Examiner(s): Peters, J. C.
• Application Number:
  US05/180,328
• Time in Patent Office: 889 Days
• Field of Search: 29/240,2B,437,517 81/10 72/391,402
• US Class Current: 81/10
• CPC Class Codes: B25B 21/001 Combined nut setting and crimping
• CPC Class Codes: F16B 19/05 Bolts fastening by swaged-on collars F16B19/08 takes precedence

Abstract

A tool for driving and setting fasteners generally of the type shown in the U.S. Pat. to Orloff et al. No. 3,421,562 issued Jan. 14, 1969; this application is a continuation in part of the copending U.S. Pat. application Ser. No. 112,746, filed Feb. 4, 1971, now abandoned.

Claims

1. A tool for setting a fastener which includes a male and female member adapted to be threaded together, said tool comprising:

first means actuable for crimping one of the members having a generally uniform cylindrical surface, second means actuable for torquing that one of the members relative to the other, drive means adapted to be driven for providing an input force for energizing said first and second means, and coupling means for connecting said drive means alternately to said first means and to said second means and responsive to the magnitude of said input force to alternately actuate said first means and said second means at instances varying in accordance with variations in said magnitude of said input force, and wherein a plurality of jaw means comprise said first means and are included in said second means, and said jaw means being operable for torquing said one member at its cylindrical surface and subsequently crimping said one member.

2. A tool for setting a fastener which includes a male and female member adapted to be threaded together, said tool comprising:

first means actuable for crimping one of the members, second means actuable for torquing that one of the members relative to the other, drive means adapted to be driven for providing an input force for energizing said first and second means, and coupling means for connecting said drive means alterNately to said first means and to said second means and responsive to the magnitude of said input force to alternately actuate said first means and said second means at instances varying in accordance with variations in said magnitude of said input force, and with said first means comprising a plurality of jaw members actuable to engage and crimp that one of the members, said second means also including said plurality of jaw members actuable to engage and rotate that one of the members.

3. The tool of claim 2 with said coupling means including a pair of threaded members with one of said threaded members being connected to said drive means and with the other of said threaded members being connectd to said jaw members.

4. The tool of claim 1 with said coupling means including a pair of threaded members with one of said threaded members being connected to said drive means and with the other of said threaded members being connected to at least one of said first and second means.

5. The tool of claim 2 with said coupling means including a pair of co-operating cam members with one of said cam members connected to said drive means and with the other of said cam members being connected to said jaw member.

6. A tool for setting a fastener which includes a male and female member adapted to be threaded together, said tool comprising:

first means actuable for crimping one of the members, second means actuable for torquing that one of the members relative to the other, drive means adapted to be driven for providing an input force for energizing said first and second means, and coupling means for connecting said drive means alternately to said first means and to said second means and responsive to the magnitude of said input force to alternately actuate said first means and said second means at instances varying in accordance with variations in said magnitude of said input force, and with said coupling means including a pair of co-operating cam members with one of said cam members being connected to said drive means and with the other of said cam members being connected to at least one of said first and second means.

7. A tool for setting a fastener which includes a male and female member adapted to be threaded together, said tool comprising:

first means actuable for crimping one of the members, having a generally uniform cylindrical surface, with the load for crimping varying in magnitude, second means actuable for torquing that one of the members relative to the other with the load for torquing varying in magnitude, drive means adapted to be driven for providing an input force for energizing said first and second means, and coupling means for connecting said drive means alternately to said first means and to said second means and responsive to the magnitude of said input force to alternately actuate said first means and said second means at instances varying in accordance with variations in said magnitude of said input force relative to crimping and torquing forces, and wherein a plurality of jaw means comprise said first means and are included in said second means, and said jaw means being operable for torquing said one member at its cylindrical surface and subsequently crimping said one member.

8. A tool for setting a fastener which includes a male and female member adapted to be threaded together, said tool comprising:

first means actuable for crimping one of the members, having a generally uniform cylindrical surface, responsive to a first torque, second means actuable for torquing that one of the members relative to the other in response to a second torque, drive means adapted to be driven for providing an input torque for energizing said first and second means, and coupling means for connecting said drive means alternately to said first means and to said second means and responsive to the magnitude of said input torque to alternately actuate said first means and said second means at instances varying in accordance with variations in said magnitude of said input tOrque and of the magnitude of said first and second torques, and wherein a plurality of jaw means comprise said first means and are included in said second means, and said jaw means being operable for torquing said one member at its cylindrical surface and subsequently crimping said one member.

9. A tool for setting a fastener which includes a male and female member adapted to be threaded together, said tool comprising:

a plurality of jaw members, housing means supporting said jaw members for relative axial movement and actuating said jaw members radially for crimping one of the members upon such relative axial movement, draw bar means having one end connected to said jaw members for moving said jaw members axially, drive means adapted to be driven for providing an input torque to said tool, and coupling means connected to said drive means and to the opposite end of said draw bar means and responsive to the magnitude of said input torque for alternately applying torque to said draw bar means for rotating said jaw members or for applying a longitudinal force to said draw bar means.

10. The tool of claim 9 with said drive means alternately applying torque and longitudinal force to said draw bar means in response to variations in the magnitude of said input torque.

11. The tool of claim 9 with said coupling means comprising a threaded connection between said opposite end and said drive means.

12. The tool of claim 9 with said coupling means comprising a cam assembly connected between said opposite end and said drive means.

13. A tool for setting a fastener which includes a male and female member adapted to be threaded together, said tool comprising:

a plurality of jaw members, housing means supporting said jaw members for relative axial movement and actuating said jaw members radially for crimping one of the members, upon such relative axial movement a draw bar having one end connected to said jaw members for moving said jaw members axially, a drive housing adapted to be driven for providing an input torque to said tool, said drive housing threadably connected to the opposite end of said draw bar whereby torque applied to said drive housing will either rotate said drive housing relative to said draw bar causing axial movement of said jaw members and crimping of the one of the members or said drive housing and said draw bar will rotate together causing rotation of said jaw members and rotation of the one member on the other.

14. The tool of claim 13 further comprising track means for connecting said housing means and said drive housing axially to each other and for supporting said housing means and said drive housing for relative rotation.

15. The tool of claim 13 further comprising stop means secured on said draw bar at selected positions for providing selective adjustment of the radial movement of said jaw member in crimping.

16. A tool for setting a fastener which includes a male and female member adapted to be threaded together, said tool comprising:

a plurality of jaw members, housing means supporting said jaw members for relative axial movement and actuating said jaw members radially for crimping one of the members upon such relative axial movement a draw bar having one end connected to said jaw members for moving said jaw members axially, a drive housing adapted to be driven for providing an input torque to said tool, a first cam member connected to said draw bar, a second cam member connected to said drive housing, said first and second cam members having engaging portions whereby torque applied to said drive housing will either rotate said drive housing relative to said draw bar causing axial movement of said jaw members and crimping of the one of the members or said drive housing and said draw bar will rotate together causing rotation of said jaw members and rotation of the one member on the other.

17. The tool of claim 16 further comprising track means for connecting said housing means and said drive housing axially to each other and For supporting said housing means and said drive housing for relative rotation.

18. The tool of claim 16 further comprising stop means secured on said draw bar at selected positions for providing selected adjustment of the radial movement of said jaw member in crimping.

19. The tool of claim 16 with one of said cam members having a cam surface and the other being a cam roller, said cam surface having a total rise determining the depth of crimp, said cam members adapted to be rotated relatively for 360* to provide a self-releasing structure.

20. The tool of claim 4 with said coupling means further comprising antifriction means operatively connecting said pair of threaded members together.

21. The tool of claim 2 with said coupling means comprising a recirculating ball nut assembly including a ball nut subassembly and a ball screw member, means connecting one of said ball nut subassembly and said ball screw member to said drive means and connecting the other of said ball nut subassembly and said ball screw member to at least one of said first and second means.

22. The tool of claim 1 with said drive means adapted to be driven by a rotary drive and comprising torque multiplying means for providing an increase in output torque from the input torque of the rotary drive.

23. The tool of claim 21 with said drive means comprising torque multiplying means for providing an increase in output torque from the input torque of the rotary drive.

24. The tool of claim 7 with said coupling means comprising a recirculating ball nut assembly including a ball nut subassembly and a ball screw member, means connecting one of said ball nut subassembly and said ball screw member to said drive means and connecting the other of said ball nut subassembly and said ball screw member to at least one of said first and second means.

25. The tool of claim 8 with said coupling means further comprising antifriction means operatively connecting said drive means and at least one of said first means and said second means.

26. The tool of claim 25 with said antifriction means comprising a recirculating ball nut assembly including a ball nut subassembly and a ball screw member, means connecting one of said ball nut subassembly and said ball screw member to said drive means and connecting the other of said ball nut subassembly and said ball screw member to at least one of said first and second means.

27. The tool of claim 8 with said drive means adapted to be driven by a rotary drive providing a driving torque and with said drive means comprising torque multiplying means for providing a multiplied input torque relative to the driving torque.

28. The tool of claim 27 with said torque multiplying means comprising a planetary gear assembly.

29. A tool for setting a fastener which includes a male and female member adapted to be threaded together, said tool comprising:

a plurality of jaw members, housing means supporting said jaw members for relative axial movement and actuating said jaw members radially for crimping one of the members upon such relative axial movement, a draw bar assembly having one end connected to said jaw members for moving said jaw members axially, a recirculating ball nut assembly including a ball nut subassembly and a ball screw member, said ball screw member connected at the opposite end of said draw bar assembly, and drive means connected to said ball nut subassembly for applying an input torque thereto which will either rotate said ball nut subassembly relative to said ball screw member and hence relative to said draw bar assembly causing axial movement of said jaw members and crimping of the one of the members or said ball nut subassembly and said ball screw member will rotate together causing rotation of the one member on the other.

30. The tool of claim 29 with said drive means adapted to be driven by a rotary drive and comprising torque multiplying means for providing said input torque having a magnitude which is a preselected multiple timeS the drive torque applied by the rotary drive.

31. The tool of claim 29 with said drive means adapted to be driven by a rotary drive and comprising a planetary gear assembly connected to be driven by the rotary drive and further connected to said ball nut subassembly.

32. The tool of claim 29 with said planetary gear assembly comprising a fixed ring gear, a planet gear subassembly drivingly connected to said ball nut subassembly, and a sun gear adapted to be driven by the rotary drive.

33. A tool for setting a fastener which includes a male and female member adapted to be threaded together, said tool comprising:

jaw means actuable for gripping and crimping one of the members, and means connected to said jaw means for alternately actuating said jaw means in one mode to rotate one of the members relative to the other and to another mode to crimp that one of the members, and with said means operable in response to a predetermined amount of rotation in one direction for actuating said jaw means and being operable for deactuating said jaw means upon a further rotation in an opposite direction whereby said jaw means will self-release, and wherein said means include drive means adapted to be driven for providing an input force for energizing said jaw means, and wherein said drive means alternately apply torque and longitudinal force in response to variations in the magnitude of the input torque.

34. The tool of claim 33 further characterized as including coupling means for connecting said drive means and with said coupling means including antifriction means operatively connecting the said drive means and said jaw means.

35. The tool of claim 34 with said coupling means comprising a recirculating ball nut assembly including a ball nut subassembly and a ball screw member.

36. The tool of claim 33 further comprising antifriction bearing means operatively inter-connected between said drive means and said jaw means.