Axis Usa, Inc.

Garibaldo Ricciarelli S.r.l.

Giuseppe Cardini

Federico Sbalchiero

Massimo Lombardi

Sabatino Luciani

Alessandro Faraoni

Roberto Orecchia

Antonio Lumini

Mauro Tarchi

Dalibor Kirov

Ugo Chiti

Stators having wave wound coil for electric motors or other dynamo-electric machines are manufactured by a production line having a series of interconnecting conveyors running to various processing workstations. The workstations are of three primary types: wave coil forming and insertion stations, prefinishing stations and a final finishing stations. Every workstation of a given type may process any or all phases of a given stator. The stators are transported along the conveyor by pallets which are encoded with information denoting the production status of the stator on the pallet. By providing the workstations with the capability to read the encoded information and adapt themselves for processing based on that information, efficiency is increased because the first available workstation may be selected and individual workstations may be bypassed if other than normal operating conditions are occurring in a workstation without impacting the entire production line. Additionally, minor variations in production rates between workstations are easily absorbed by the production line without a corresponding loss of efficiency.

Apparatus for manufacturing stators

Armatures for dynamo-electric machines are balanced during manufacture by measuring the unbalance of the armature assembly prior to winding the coils on the armature. The numbers of turns of wire in at least some of the coils subsequently wound on the armature are then adjusted so that the unbalance of the resulting coils compensates for the unbalance of the armature prior to coil winding. Alternatively, one or more extra turns of wire that are short-circuited at the commutator may be added to help balance the armature. In addition, masses may be added to the armature to ensure that it is balanced dynamically as well as statically.

Methods and apparatus for producing dynamo-electric machine armatures

Armatures for dynamo-electric machines are balanced during manufacture by measuring the unbalance of the armature assembly prior to winding the coils on the armature. The numbers of turns of wire in at least some of the coils subsequently wound on the armature are then adjusted so that the unbalance of the resulting coils compensates for the unbalance of the armature prior to coil winding. In addition, masses may be added to the armature to ensure that it is balanced dynamically as well as statically.

Methods for producing dynamo-electric machine armatures with improved

A resin coating system having an endless conveyor for passing components to be coated with resin successively through a preheating station, a resin coating station, and a gelification station. Coated components are exchanged with uncoated components at a transfer station along the conveyor between the gelification station and the preheating station. If an uncoated component is not ready to be transferred into the coating system or later processing machines are not ready to receive a coated component, then exchange of coated and uncoated components does not take place at the transfer station, and the coated component reapproaches the preheating and coating stations. A system and method for allowing coating of uncoated components to be completed while coated components passing through the coating station are prevented from being recoated is also provided.

Heatless resin coating system and method

An objective and non-destructive test of the fused tang/commutator bar joints in an armature, that can be used on every armature being manufactured on an armature manufacturing line, as well as apparatus for performing that test, are provided. The armature is immersed in an acoustic coupling medium. Acoustic pulses, preferably ultrasonic pulses, are beamed onto the joint and the reflected pulses are measured. The quality of the joint can be determined by comparing the reflected amplitude to the known reflected amplitudes for joints of known quality. A testing station on an armature production line includes a mechanism for removing the armature from the production line, immersing it in the coupling medium, and rotating it as each joint in the commutator of that armature is checked.

Method and apparatus for acoustic testing of armatures

Commutators of armatures for electric motors or other dynamo-electric machines are finished by subjecting them to inspection and turning operations. The first inspection operation determines the minimum amount of material that can be cut while producing a high quality armature. This determination may indicate that no formal turning is required, only finishing. The turning operation, if applicable, cuts the commutator to a substantially cylindrical shape which is substantially concentric with the axis of rotation of the armature. The finishing operation, which may be performed by the same mechanism as the turning operation, imparts a desired axial roughness to the cylindrical commutator surface. The commutators may be inspected after the turning and finishing operations to generate data useful for such purposes as automatically modifying the turning and finishing operations performed on subsequent commutators.

Commutator finishing methods and apparatus

Heatless resin coating system

The balance of rotors for dynamo-electric machines (e.g., electric motor armatures), which are wound with two diametrically opposite, simultaneously applied coils of wire, is improved by ensuring that wire is fed to both coils in substantially similar quantities. This can be accomplished by monitoring the consumption of each wire as it is fed to its respective coil, and adjusting the tension with which at least one wire is fed to its coil to substantially equalize the wire consumptions. Alternatively, the tension at which both wires are fed to the coils is monitored, and the tension of at least one wire is adjusted to equalize the tension of the two wires.

Methods and apparatus for winding armatures with improved balance

For the continuous formation of bags for containing bulk materials--in the form of granules, powders and the like--the end of the web (EN), from a new bobbin (BA) in readiness, is laid, with the surface to be welded on the outside, around a welding bar (18) carried by a movable element (12), and the bar (18) is positioned opposite a counterbar (20), along which the web (N) being exhausted from the previous bobbin (B) runs; bar and counterbar are brought close to one another to carry out transverse welding and cutting, in such a manner that a superimposed and welded edge (BS) emerges transversely from the continuous web thus joined, from the surface opposite that of welding. (FIG. 2)

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Florence, Italy

Giuseppe Cardini