摘要:
A method and apparatus of fusing a pin to a wire to reliably form a good quality fusion joint includes placing the pin and insulated or uninsulated wire in a notch of a lower fusing electrode so that the pin is spaced a predetermined distance above the wire. The upper fusing electrode applies fusing current and heat symmetrically to the pin and notch side walls and the portion of the lower electrode beneath and in contact with the wire. Heat is transferred to soften the pin and burn or vaporize the insulation off the wire before the pin and wire touch. Since all parts are held symmetically, parts can not skew or burn off un evenly. Electrode pressure builds to drive the soften, heated pin and wire together and to apply fusing current through the contacting pin and wire to form a good fusion joint. Another aspect of the invention includes forming the lower fusing electrode with a plurality of fusing notches to afford quick operator set-up and sequential, automatic fusing of the series of wire/pin assemblies. Openings and channels are formed adjacent the notches to concentrate the fusing heat to the portion in contact with the wire.
摘要:
A method, machine and termination for connecting two or more insulated wire ends includes placing them in a metal tube held between fusing electrodes. The electrodes are shaped to deform the tube and wires therein with the application of fusing pressure. During fusing, pressure builds first to press the assembly together, then heat and current are applied as the tube and internal wires are compressed. Fusing current first flows from a longitudinal region of the tube equally in both direction through the tube metal to soften the tube and distribute the fusing heat broadly. As the wire insulation is burned off or flows away, current also passes through the bare wire ends to aid the fusing process. For tinned copper tubes, some of the inside tin layer flows to wet copper surfaces and dissolve copper impurities. Some tin flows to seal small spaces between the fused wires. Some of the tin on the outside surface and inside surface of the tube may vaporize. A fusing machine for carrying out the method is suspended from a standard retractable winch cable so that the electrodes can be easily positioned in free space.
摘要:
A method and apparatus of making an electrical bobbin including applying to the wire/terminal assembly fusing pressure and heat. Sensing the temperature of an electrode zone near one of its fusing surfaces, and controlling the application and cessation of fusing power in response to the zone temperature values. Power application can cycle on and off for a set time period, number of set cycles, or stopped in response to another event such as sensed electrode displacement reaching a set value. Various other control parameters are or can be employed. The electrodes are preferably high resistant material and no significant current flows between upper and lower electrodes.
摘要:
A method, machine and termination for connecting two or more insulated wire ends comprises placing them in a metal tube held between fusing electrodes. The electrodes are shaped to deform the tube and wires therein with the application of fusing pressure. During fusing, pressure builds first to press the assembly together, then heat and current are applied as the tube and internal wires are compressed. Fusing current first flows from a longitudinal region of the tube equally in both direction through the tube metal to soften the tube and distribute the fusing heat broadly. As the wire insulation is burned off or flows away, current also passes through the bare wire ends to aid the fusing process. For tinned copper tubes, some of the inside tin layer flows to wet copper surfaces and dissolve copper impurities. Some tin flows to seal small spaces between the fused wires. Some of the tin on the outside surface and inside surface of the tube may vaporize. A fusing machine is also disclosed for carrying out the method that is suspended from a standard retractable winch cable so that the electrodes can be easily positioned in free space.
摘要:
A method and apparatus of fusing a pin to a wire to reliably form a good quality fusion joint includes placing the pin and insulated or uninsulated wire in a notch of a lower fusing electrode so that the pin is spaced a predetermined distance above the wire. The upper fusing electrode applies fusing current and heat symmetrically to the pin and notch side walls and the portion of the lower electrode beneath and in contact with the wire. Heat is transferred to soften the pin and burn or vaporize the insulation off the wire before the pin and wire touch. Since all parts are held symmetrically, parts can not skew or burn off unevenly. Electrode pressure builds to drive the soften, heated pin and wire together and to apply fusing current through the contacting pin and wire to form a good fusion joint. Another aspect of the invention includes forming the lower fusing electrode with a plurality of fusing notches to afford quick operator set-up and sequential, automatic fusing of the series of wire/pin assemblies. Openings and channels are formed adjacent the notches to concentrate the fusing heat to the portion in contact with the wire.
摘要:
A method and apparatus for brazing a commutator to a pair of armature wires which are arranged one above the other employ a dual brazing alloy wire feeder which feeds one brazing alloy wire between a commutator and the lowermost armature wire, while simultaneously feeding the other brazing alloy wire between the lowermost armature wire and the uppermost armature wire. At the conclusion of the brazing operation, the partially consumed brazing alloy wires are automatically advanced to a predetermined length in preparation for a subsequent brazing operation by which the commutator is mechanically and electrically connected to another pair of armature wires.
摘要:
A fusing machine utilizes a fusing electrode assembly and a ground electrode assembly suspended from the fusing electrode assembly. The fusing electrode assembly includes a lower fusing electrode shaft and an upper fusing electrode shaft. The lower fusing electrode shaft has an open end adapted to receive the upper fusing electrode shaft and a compression spring interposed between the shafts. An adjustable stop is threaded onto the upper fusing electrode shaft to limit the downward movement of the upper fusing electrode shaft. The lower fusing electrode shaft is keyed to a fusing electrode holder formed from a plurality of keyed members. The ground electrode assembly includes an adjusting mechanism, whereby the position of a ground electrode carried by the ground electrode assembly can be adjusted relative to a fusing electrode carried by the fusing electrode assembly. The fusing electrode assembly and the ground electrode assembly are mounted to a frame which is adjustably attached to a supporting structure.
摘要:
A terminal pin is provided with a widened connecting section defining shoulders on the terminal so that the terminal serves as a standoff to support a device such as a coil remote from a circuit board. The terminal preferably is provided with ridges and grooves. The ridges have sloping surfaces which guide a wire into the grooves during assembly of a wire to the terminal. The surfaces bordering the grooves are adapted for frictional locking engagement with the wire. The wire can be fused to the terminal by a solderless fusing process. The ridges protect the wire from damage by the fusing electrodes, and deformation of the ridges preferably serves to lock the wire into the grooves. Preferably, the wire-receiving grooves are formed in the widened connecting section.
摘要:
A fusing machine and method employ a first electrode which defines a fusing station and a second electrode which is movable toward and away from the first electrode. Two wires which have been fused together at the fusing station are automatically cut without removing the fused wires from the fusing station prior to cutting them. Also disclosed is an electrode set including a first electrode having an inwardly tapered slot sized and shaped so as to releaseably capture wires to be fused and a second electrode having a straight-sided tip sized and shaped so as to be freely movable into and out of the slot in the first electrode.
摘要:
A novel control arrangement is provided for controlling the operation of the heating electrodes of a brazing machine for forming a joint between an armature wire and a commutator bar. The heating electrodes are brought into contact with the armature wire and commutator bar at the point where they are to be joined, and fiber-optic means are provided for collecting radiant energy emitted from a point at or adjacent to the joint area as the joint is being heated. The collected radiant energy is converted into a usable electronic signal representative of the temperature at the joint area, and the heating electrodes are actuated on and off in response to the electronic signal when the temperature at the joint reaches predetermined upper and lower temperature levels. As a result, the temperature of the heating electrodes and joint area is maintained within a desired temperature range while the joint is being formed.