摘要:
A tubular fastener element is inserted into an opening in a wall until a flange at the trailing end of the fastener element is in contact with the wall. Then, an externally threaded end of a rod is inserted into a center opening in the fastener element from the flange side of the wall and is mated with internal threads in the fastener element beyond the second side of the wall. A tubular mandrel that surrounds the rod is moved into contact with the entrance portion of the center opening in the tubular fastener. The outside diameter of the mandrel is larger than the inside diameter of the center opening in the fastener element. The rod is retracted to cause a reduced thickness wall portion of the fastener element to collapse and form a second radial flange on the second side of the wall. The mandrel is forced axially into the center opening in the fastener element. This causes a tubular end portion of the fastener element that is in the opening in the wall to radially expand into tight engagement with the sidewall of the wall opening. It also cold expands the wall material surrounding the opening for fatigue enhancement of the wall material.
摘要:
A fitting is inserted into an opening in a wall. The fitting includes a ring portion where it extends through the opening. It also includes one or two end portions that extend axially outwardly from the ring portion. The ring portion has an inside diameter that is smaller than the inside diameters of the end portion or portions. The fitting is positioned within the wall openings. Then, an expansion tool is moved through the interior of fitting for the purpose of expanding the ring portion. The ring portion is expanded to such an extent that it makes a tight fit with the opening. Also, the degree of expansion may result in a cold working of the wall material surrounding the opening. The expansion tooling only expands the ring portion and does not exert a substantial expanding force on the end portions.
摘要:
A structural assembly for use with a structural workpiece includes a bushing and a first member, such as a washer. The bushing is placed in an opening of the structural workpiece and the first member is placed on the bushing. A portion of the bushing within the opening of the structural workpiece is radially expanded (e.g., with a tapered mandrel) into the structural workpiece to achieve an interference fit therewith. An extended portion of the bushing is radially expanded to generate a swaged portion. The swaged portion mechanically captures and retains the first member on the bushing and against the structural workpiece. The combination of a radial flange on the bushing and the retained first member, on opposite surfaces of the structural workpiece, respectively, may operate as bearing surfaces for thrust loading in more than one direction.
摘要:
In a selective soldering machine (FIG. 1, 5), a calibration circuit board (FIG. 2, 100) makes contact with a solder wave (FIG. 1, 25). The calibration circuit board (100) is interfaced with a desktop computer unit (FIG. 4, 160) through a optoisolator unit (FIG. 4, 150). The desktop computer unit (160) records which of the contact points (FIG. 2, 120) distributed on the calibration circuit board (100) come into contact with the solder wave (25). This data is then used to establish the solder contact area (FIG. 6, 129) as a function of the various parameters of the selective soldering machine (5). These parameters include the flow rate and flow pressure of solder from the solder pot, the angle of inclination of the electronics board (FIG. 1, 30), the speed of the solder pump (12), the distance from the leads (39) to the solder wave (25), the motion vector which a gantry (50) applies to the electronics board (30), and any preheating which may be applied the electronics board (30).
摘要:
A nut plate assembly includes a nut retainer and a bushing for expanding a tubular body of the retainer. The retainer assembly is used to cold work an opening of a workpiece in order to fix the nut retainer assembly relative to the workpiece. A nut can be snapped into the retainer. A method of installation includes passing a mandrel through the bushing to radially expand the bushing into a tubular body of the retainer. The tubular body is compressed between the workpiece and bushing as the bushing is displaced radially causing corresponding radial displacement of the tubular body. The expanded bushing applies pressure to the tubular body for a desired fit between the nut retainer and workpiece.
摘要:
A fastener assembly is installable in an opening of a workpiece and includes an outer member and a fastener. The fastener is movable through a passageway of the outer member. The fastener includes a mandrel and a stem. The mandrel is dimensioned to radially expand the outer member. The stem has an expansion portion and a propping portion. The expansion portion radially expands the outer member after the outer member has been expanded by the mandrel. The propping portion keeps the expanded outer member in an installed expanded configuration. The outer member and fastener are installed in a single operation to reduce installation time.
摘要:
A document editing environment is provided that varies based on the type of user. One of a plurality of different types of security levels are assigned to different users who edit documents. A document editing environment is defined for a plurality of different types of documents based at least upon the security level assigned to a user who edits the document. The defined document editing environment is then provided to the user for use in editing a document.
摘要:
A split sleeve (S) is deposited into a sleeve loader (24, 24'), with a lower end of the sleeve (S) on a sleeve support surface (154). A mandrel (M) carried by a puller tool (10, 10') is inserted into the sleeve loader (24, 24'), and through the sleeve (S), to position the sleeve (S) on a small diameter portion (50) of the mandrel (M), and an end portion of the sleeve (S) within a nosepiece (12), against a sleeve end contacting surface (66). The tool (10, 10') is moved away from the sleeve loader (24, 24') to pull the mandrel (M) out from the sleeve loader (24, 24'). Then the mandrel (M) is inserted into an opening (16) in a workpiece (14). The tool (10, 10') is moved endwise to place the sleeve (S) within the opening (16) and a workpiece contacting end surface of the nosepiece (12) into contact with the workpiece (14). The tool (10, 10' ) is then operated to retract the mandrel (M). This moves first an increasing diameter portion (52) and then a maximum diameter portion (54) of the mandrel (M) axially through the sleeve (S). In response, the sleeve (S) is expanded radially to compress the material immediately surrounding the opening. Grip surfaces (158) on end portions of nosepiece fingers (78) grip the sleeve (S). Following retraction, the tool (10, 10') is moved away from the workpiece (14) and the sleeve (S) is pulled out from the opening (16).
摘要:
A nut plate assembly includes a nut retainer and a bushing for expanding a tubular body of the retainer. The retainer assembly is used to cold work an opening of a workpiece in order to fix the nut retainer assembly relative to the workpiece. A nut can be snapped into the retainer. A method of installation includes passing a mandrel through the bushing to radially expand the bushing into a tubular body of the retainer. The tubular body is compressed between the workpiece and bushing as the bushing is displaced radially causing corresponding radial displacement of the tubular body. The expanded bushing applies pressure to the tubular body for a desired fit between the nut retainer and workpiece.
摘要:
A stent having a body capable of visualization under X-ray fluoroscopic techniques. The stent body includes radiopaque strut members. The stent body can also have a radiopacity gradient along the length of the stent body.