摘要:
The operation of a flier-type armature winding machine is monitored to detect if a tang connection is missed and for interrupting the operation of the machine in such event. Differences in wire usage between those cases in which a tang connection is successfully made and those cases in which a tang connection is missed are detected and, if the differences are substantial, the operation of the armature winding machine is terminated. The monitoring is done with a shaft encoder and an add-subtract counter by which is computed the degrees of forward and reverse rotation of a guide pulley over or around which the wire is coursed. In a modification, up and down movements of a dancer pulley are monitored to provide an indication of wire usage.
摘要:
An armature core subassembly and a commutator to be assembled thereon are each centered on a common axis and rotated relative to one another until a desired angular alignment is obtained between a side edge of a commutator bar and the armature core slots. This orientation is maintained while the commutator is advanced to and pressed onto the armature shaft. A commutator placing machine is described in which a tang-oriented commutator is loaded into the nosepiece of a ram assembly and the ram assembly is rotated by a stepper motor until an edge of a commutator bar is detected at a predetermined location by an optical edge detector. Prior machines for tang-orientation and orientation by insulating gaps between commutator bars are also described.
摘要:
Both the inner commutator shield assembly and the outer commutator shield assembly of a flier-type armature winding machine include quick release means by which armature-specific tooling parts may be quickly removed and replaced by other armature-specific tooling. The armature rotator assembly has a modular collet assembly which may be removed simply by manually removing a pair of connectors and replaced by another modular collet assembly. By employing these assemblies, an entire tooling changeover can be effected by one relatively unskilled in tooling set-up techniques in a few minutes without the use of tools.
摘要:
Wire trimmer blades having sharp edges are located at the forward end of the inner commutator shield of an armature winding machine. Clamps gripping the start and finish wires of the armature are moved to cause the wire segments gripped by the clamps to be stretched and then severed at the sharp edges.
摘要:
To increase the slot fill of armatures wound on a flier type armature winding machine of the type having inner and outer commutator shields, the outer shield is retracted during a portion of each winding cycle for each coil to permit the rotating fliers to draw the wires nearer to the armature shaft and thus deeper into the coil receiving slots. The inner shield, which has notches for exposing a pair of commutator hooks, is rotated to position the notches outside of the paths of the wire when the outer shield is retracted. A tamper assembly is provided for engaging the coil ends immediately after they are wound. The tamper assembly includes tamper rods slidably supported by the winding forms and also includes actuators for pushing the tamper rods into engagement with the coil ends. The tamper assembly may be operated after each winding cycle or only after selected winding cycles. The tamper assembly is designed to cause the coil sides to be pushed into locations more centrally of, and deeper into, the coil receiving slots than naturally occurs by the operation of the fliers.
摘要:
Armature support pallets are provided with support assemblies which have parts that cooperate with structural features of the armature assembly they carry to maintain the rotary orientation there
摘要:
A plurality of commutators are inserted into a commutator supply tube in end-to-end, tang-oriented relationship to form a row of commutators mutually aligned along a common axis. The commutator-filled tube is oriented on a horizontal axis in axial alignment with a commutator-receiving nest. A first commutator in the tube is inserted into the nest by pushing on the opposite end of the row. The nest is moved into alignment with a placing ram and the commutator pushed into the ram nosepiece after which the ram is operated to press the commutator onto an armature shaft. The process is repeatedly carried out until all of the commutators are removed from the tube. The process may also include a commutator tang forming step and a tang ejection capability. An empty tube is replaced successively by other tubes filled with commutators so that the process can be repeatedly carried out over an indefinite period of time. An intermittently-operated conveyor having tube-receiving seats is used to convey the tubes to the area of the commutator placing machine.A commutator feed plate having plural commutator-receiving nests is provided that intermittently rotates through a limited angle about a horizontal axis to successively move the nests from station-to-station. Open windows in the feed plate provide space for operation of the ram.
摘要:
The insulating coating on the portion of a conductor wire to be fused to a terminal is evaporated prior to the fusing operation by the use of a focused inductive heater, such as an ultrasonic or laser beam, focused on the portion of the wire from which the insulating coating is to be removed. Following removal of the insulating coating in this manner, the terminal and the conductor wire are fused together by application of heat and pressure thereto. The invention is described for use in connecting armature coil lead wires to commutators having bars with tangs.
摘要:
The inner surface of an underground tunnel defining structure, such as a culvert or pipe, is measured by apparatus including a portable hand held battery powered laser unit releasably attached to a rotor disk supported within the tunnel by an adjustable stand or tripod for rotation on a generally horizontal axis. The disk has peripherally spaced notches which receive a spring-biased latch member for positioning the disk and laser unit at predetermined angular positions about the axis. The laser unit emits a laser beam to a target on the inner surface of the structure and displays on the unit a precision distance reading from the laser unit to the target. The distance reading for each target is entered in a chart for comparison with a prior measurement reading to indicate changes in the shape or profile of the inner surface.