CN1391319A

CN1391319A - Technology for manufacturing commutator with cold-pressed end face and its product

Info

Publication number: CN1391319A
Application number: CN 02125835
Authority: CN
Inventors: 丁明荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-30
Filing date: 2002-07-30
Publication date: 2003-01-15
Anticipated expiration: 2022-07-30
Also published as: CN1249867C

Abstract

A commutator with cold-pressed end face is made up of circular copper wire through cutting, cold pressing, cleaning, shaping, turning, milling slot and bending. Its advantages are simple technology, no spark and noise generation, and long service life.

Description

Manufacture method of a kind of commutator with cold-pressed end face and products thereof

Technical field

The present invention relates to the invention of commutator production process, what be specifically related to is the whole invention of adopting cold extrusion method to manufacture end commutator of commutator.

Background technology

In the prior art, end commutator is the ladder row commutator segment group after four road drawing procedure moulding, in accordance with regulations behind the size stamping-out, by manual every ladder row commutator group interval a slice mica sheet is become a commutator by design sheet array, because the tolerance that in the drawing forming process, produces, add the tolerance of mica sheet thickness, must be that a slice is milled in a feed when milling mica slot, can not carry out diagonal angle two mica splitting grooves and once carry out groove milling, the processing technology complexity, the commutator segment that its manual commutator of forming is corresponding in twos is not symmetrical on same straight line, thereby cause carbon brush for electric machine to produce deviation when commutation, produce spark, noise increases, cause commutator minimizing in useful life, motor properties and then descends.

Summary of the invention

Problem in view of the known technology existence, purpose of the present invention aims to provide the simple science of a kind of technology, the saving working hour is the material saving again, institute's product processed long service life, and a kind of cold extrusion commutator production process of scientific structure and products thereof, for achieving the above object, the present invention finishes as follows: the manufacture method of this kind commutator with cold-pressed end face, it is characterized in that after the round copper wire cutting, carry out cold-extruded and be pressed into the commutator blank, with it injection-compression molding, after turning, groove milling, milling hook, last crotch forms after the cleaning; Described injection-compression molding process is to carry out extrusion modling filling up phenolic moulding powder in the cavity volume of blank; Described turning operation is the end commutator of moulding to be carried out inside and outside circle cut edge; The commutator with cold-pressed end face product that manufactures as stated above, during groove milling, end face is carried out five equilibrium, only need on the symmetrical five equilibrium straight line with a groove milling of milling cutter, overcome commutator that traditional handicraft is processed into because of the commutator segment of correspondence point-blank symmetry cause motor commutation the time produce spark, problem such as noise is big, and the useful life of improving commutator, effectively keeping motor properties simultaneously, is the quantum jump on the commutator production technology.Compared with prior art, have outstanding substantive distinguishing features and obvious improvement.

Description of drawings

The present invention has following accompanying drawing:

Fig. 1 is the cold-extruded blank end face structure figure of product of the present invention;

Fig. 2 is the cutaway view of the cold extrusion blank end face of product of the present invention;

Fig. 3 is the end face structure figure of product of the present invention;

Fig. 4 is the cross-sectional end view of product of the present invention;

Fig. 5 is a process chart of the present invention.

Embodiment

Accompanying drawing has been represented technological process of the present invention, further describe the process of embodiment below again in conjunction with theme of the present invention, the manufacture method of this commutator with cold-pressed end face, at first the copper wire of circle is cut by designing requirement, copper section after the cutting is placed on the cold extrusion press that mould is installed pushes, copper section after the extruding commutator blank (as Fig. 3), after this blank pickling, in the cavity volume of blank, insert phenolic moulding powder 3, be placed on and carry out injection-compression molding on the press injector, described injection-compression molding is that thermosetting phenolic moulding powder 3 and blank is agglomerated together, then its inside and outside circle being carried out turning cuts edge, the end face of these moulding product is carried out five equilibrium, commutator segment 2 behind the five equilibrium is corresponding in twos, its corresponding bisector is on same straight line, milling cutter is placed on carries out groove milling on the collinear bisector, the groove that is milled is insulation tank 1, after groove milling is finished, it is milled hook, the hook 3 that mills is positioned at the mid point of commutator segment 2 cambered surfaces, at last to its crotch, the commutator with cold-pressed end face product, whole production technology is promptly all finished.The cold extrusion commutator product of finishing by manufacture method of the present invention, not only saving working hour but also material saving, can not produce shortcomings such as spark, hot-tempered sound are big point-blank when symmetry does not cause motor commutation because of the commutator segment of correspondence, the useful life of also having improved motor simultaneously, according to the commutator with cold-pressed end face product that theme of the present invention is produced, making for vast motor and bring positive result of use.

Claims

1, a kind of manufacture method of commutator with cold-pressed end face is characterized in that carrying out cold-extruded and being pressed into the commutator blank after the round copper wire cutting, and with it injection-compression molding, after turning, groove milling, milling hook, last crotch forms after the cleaning.

2, the manufacture method of a kind of commutator with cold-pressed end face as claimed in claim 1 is characterized in that described injection-compression molding process is to carry out extrusion modling filling up phenolic moulding powder in the cavity volume of blank.

3, the manufacture method of a kind of commutator with cold-pressed end face as claimed in claim 1 is characterized in that described turning operation is the end commutator of moulding to be carried out inside and outside circle cut edge.

4, a kind of commutator with cold-pressed end face product that processes by above-mentioned manufacture method.