CN101083379A

CN101083379A - Process for manufacturing commutator

Info

Publication number: CN101083379A
Application number: CN 200710068993
Authority: CN
Inventors: 黄岳洪
Original assignee: NINGBO SHENGKE COMMUTATOR CO Ltd
Current assignee: NINGBO SHENGKE COMMUTATOR CO Ltd
Priority date: 2007-05-29
Filing date: 2007-05-29
Publication date: 2007-12-05
Anticipated expiration: 2027-05-29
Also published as: CN100487990C

Abstract

The invention relates to a manufacture method of commutator, the commutator includes a commutator body which contains many insulation trough in the circumference direction, the commutator piece placed in the insulation trough, the commutator has establishes the hook foot, the commutator body is prepared by the engineering plastics, the hook foot is manufactured by the die craft; the manufacture method of the commutator is that the insulation trough orients orientation shell by the engineering plastics manufacture and molding, the orientation shell is cooperated with the outer diameter of the commutator body, the orientation shell is manufactured by nylon, the orientation shell installs multi-bars, and the width of the bar is 0.02 millimeter bigger than the insulation trough, the depth of high commutator insulation trough is 0.05 millimeter bigger, the rear part of the hook foot installs a taper body; the invention greatly reduced the production working procedure and equipment, has short production cycle greatly, the lower production cost, the product does not need to carry on the turning machining, is very clean in the product trough, the product has no harm which the mica sheet brings; therefore it has greatly promoted the product mix optimization and the stable operational performance.

Description

A kind of manufacture method of commutator

Technical field

The present invention relates to a kind of method field of manufacturing of commutator, particularly relate to a kind of manufacture method that is used for the hook commutator of armature.

Background technology

At present, the commutator structure that is used for armature is various, but most products comprise a commutator matrix and are placed on a plurality of commutator segments in this commutator matrix, this commutator segment one end is provided with the hook pin, be provided with a plurality of insulation tanks in this commutator matrix, dispose mica sheet in this insulation tank, the machining moulding of this insulation tank generally is just can finish with multiple working procedures such as cutter blade milling add-on type and sizes; And described mica sheet also needs blanking, punching out, screening and pressure to put etc. to change the expense multiple working procedure; Its process for making is as follows:

Row is drawn in the commutator segment blanking, and----------------commutator segment is pressed and inserted the moulding of commutator matrix, and-------------------------------------polish----is up to the standards milling hook pin whole crotch pin numerical control boring processing bore hole in the crotch shaping in sanding in polishing in oblique polishing to mill insulation tank for size, correction total length, processing hook pin and endoporus in curing to arrange commutator segment for vibration cleaning commutator segment, mica sheet punching out for punching out commutator segment, mica sheet shearing slivering.

Its production process of above-mentioned process for making is various, and required process equipment and manpower are also many, and the production cycle is long; Next is that described insulation tank leaves internal stress after machining, influences the stability of product serviceability; Simultaneously, infiltrate copper powder in the processing of described insulation tank and the assembling process easily in this insulation tank, dispose mica sheet in this insulation tank again, the easy moisture absorption of this mica sheet makes the screening of mechanization be not easy to realize.

Summary of the invention

Technical problem to be solved by this invention provide at the present situation of above-mentioned prior art a kind of rational in infrastructure, technology is simple and easy, production cost is low, do not have mica sheet also not need the manufacture method of the commutator of turning machine processing, stable performance in the product.

The present invention solves the problems of the technologies described above the technical scheme that is adopted to be: a kind of manufacture method of commutator, this commutator comprises that one has the commutator matrix of a plurality of insulation tanks at circumferencial direction, be placed with commutator segment in this insulation tank, this commutator segment one end is provided with the hook pin, it is characterized in that: this hook pin adopts die process to make, described insulation tank adopts a shell location, location and an injection mo(u)lding by the engineering plastics making, the external diameter phase configuration of this location shell and described commutator matrix; The manufacture method feature of such commutator can have been avoided machining processes, because the internal stress that stays in insulation tank behind the described machining processes, this internal stress makes the properties of product instability; Thereby the serviceability of product and the stability of operation have been promoted.

Described location shell can be provided with a plurality of ribs at circumferencial direction, and the width between this rib can be big 0.01 millimeter to 0.03 millimeter than the width of described insulation tank.Width between the described rib is best bigger 0.02 millimeter than the width of described insulation tank; Can guarantee like this when the general assembly moulding because the extruding of commutator segment keeps the width of commutator insulation groove.

The height of described rib can be bigger 0.04 millimeter to 0.06 millimeter than the degree of depth of described commutator insulation groove.

The degree of depth of the described commutator insulation groove of the aspect ratio of described rib is best big 0.05 millimeter.

As a further improvement on the present invention, the afterbody of described hook pin preferably is provided with a tapering body, is the waste material for fear of the residual phenolic moulding powder in this hook pin place when the formed product.

Described commutator process for making can be: row is drawn in described commutator segment blanking, follow this commutator segment of punching out, then this commutator segment is cleaned in vibration, then arranges this commutator segment, and then this commutator segment is pressed and inserted the moulding of described commutator matrix, then solidify described commutator matrix, then remove the moulding of commutator matrix and the material handle, then polish commutator matrix after the moulding, then bend described hook pin, then polish described hook pin, then check and qualified.This commutator process for making has significantly been simplified manufacturing procedure, and the production cycle reduces and the product cost of being born thereby shortened.

Described commutator matrix can adopt engineering plastics to make.The described location shell of being made by engineering plastics can adopt nylon material to make.The described location shell of being made by engineering plastics preferably adopts nylon to make; This nylon is made the location shell and is had favorable mechanical toughness and higher thermal endurance and dimensional stability.

Compared with prior art, production process of the present invention reduces, and equipment and required personnel are few, with short production cycle, and production cost is lower; The product product does not need to carry out turning machine processing, and is very clean in the product groove, do not have mica sheet in the product, removed the harm of mica sheet moisture absorption; Screening realizes mechanization easily; Product carries out the optimization of structure, and the stability that product uses is good.

Description of drawings

Fig. 1 is a commutator structure schematic diagram of the present invention;

Fig. 2 is the right side view of Fig. 1;

Fig. 3 is a location of the present invention shell mechanism schematic diagram;

Fig. 4 is a upper impression structural representation of the present invention;

Fig. 5 bends preceding structural representation for hook pin of the present invention;

Fig. 6 is the vertical view of Fig. 5;

Embodiment

Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.

Fig. 1 to Fig. 4 shows an execution mode of the manufacture method of a kind of commutator of the present invention.This commutator comprises that a circumferencial direction is evenly equipped with the commutator matrix 1 of a plurality of insulation tanks 12, is placed with commutator segment 2 in this commutator matrix insulation tank 12; These commutator segment 2 one ends are provided with hook pin 3, as shown in Figure 1.

This commutator matrix 1 adopts engineering plastics to make, and this insulation tank 12 adopts location shell 4 injection mo(u)ldings, and location shell 4 as shown in Figure 3.The external diameter phase configuration of this location shell and described commutator matrix 1.

Preferably should adopt nylon to make by location shell 4; Nylon material has very strong mechanical tenacity and higher thermal endurance, forming temperature be 150 degree Celsius during the left and right sides its dimensional stability better.

Described location shell 4 is provided with a plurality of ribs 41 at circumferencial direction, as shown in Figure 3; Width between this rib 41 is generally big 0.02 millimeter than the width of described insulation tank 12, can guarantee like this when the general assembly moulding owing to still can keep the width of commutator insulation groove under the extruding of commutator segment.When compression moulding, under briquetting pressure, can guarantee the degree of depth of insulation tank like this.

The feature of the manufacture method of commutator of the present invention is that insulation tank is to come out with shell 4 injection mo(u)ldings of plastics location, does not need to adopt machining processes; Promptly unlike the prior art be that circular direction needn't leave the allowance of size operation outside; Next is that the hook pin 3 of this commutator adopts die process to make, and does not of the prior artly make this hook pin with milling method and do not re-use; And exempted the insulation tank of the mica sheet that tape insulation uses; For this reason, blanking, punching out processing, the moulding of cutter blade Milling Process and screening, the pressure of having omitted described mica sheet such as puts at required multiple working procedure.

Above-mentioned method of manufacturing technology causes having omitted multiple machining processes such as turning and milling, and has avoided the internal stress that stays in insulation tank behind the described machining processes; Thereby promoted the stability of the serviceability of product; And the production process of existing product is various, and required process equipment and manpower are also many, the long serviceability that influences product again of production cycle.

Meanwhile, in the processing and assembling process of the insulation tank of the mica sheet of described existing product, infiltrate copper powder easily in this insulation tank, dispose mica sheet in this insulation tank again, the easy moisture absorption of this mica sheet makes the screening of mechanization be not easy to realize.

The afterbody of this hook pin 3 is provided with a tapering body 31, shown in Fig. 5,6; It is intended that the waste material of eliminating the residual phenolic moulding powder in this hook pin place when formed product.

The difference of the present invention and existing product maximum is: be provided with insulating concrete mica plate in the existing product, this insulating concrete mica plate insulation tank processes with cutter blade, and the present invention does not have mica sheet, and insulation tank forms out with plastic housing.

Adopt not turning owing to product in the moulding of commutator of the present invention and the manufacture method, do not mill the hook pin, do not mill technologies such as insulation tank, so structure of the mould of this commutator matrix 1 and insulation tank 12, precision, surface roughnesses etc. all have strict demand, owing to will guarantee good concentricity (generally requiring in 0.06 millimeter) and outside dimension between them, will be careful with the line cutting apparatus processing insulation tank 12 of high accuracy such as silk of the profiled sheeting of mould contacts commutator segment cylindrical position with this insulation tank top, the locate mode of such rigidity can guarantee commutator brush track diameter size and concentricity requirement.The roughness of the groove of mould requires in the Ra value in 0.8, to avoid scratching described commutator segment surface.The general hook pin structure up that adopts during moulding can guarantee the degree of depth of commutator insulation groove like this, avoids the curved phenomenon of plastic housing muscle under the impulse force of phenolic moulding powder when moulding.The design of upper impression 6 as shown in Figure 4, this upper impression requires that good surface roughness is arranged, the upper impression surface roughness is generally in Ra0.8, the design of this upper impression is wanted to seal to such an extent that live phenolic moulding powder, can guarantee that commutator hook foot position does not have waste material so on the one hand, can avoid being bonded on the upper impression on the other hand owing to waste material.Moulding is sloughed described location shell later in product stripping, insulation tank has just formed out like this; Upper impression 6 be provided with a datum axis 61 and with the perpendicular datum level 5 of datum axis 61, this datum axis 61, datum level 5 are corresponding with the centre of location line 42 of described location shell 4; Shown in Fig. 3,4.

Process for making of the present invention is expressed as follows:

Row is drawn in the commutator segment blanking, and----the punching out commutator segment----commutator segment is cleaned in vibration, and--------press and insert commutator matrix moulding----curing, and--------the hook pin bends, and----polishing hook pin----is up to the standards in polishing to remove the material handle to arrange commutator segment by commutator segment.

Above-mentioned process for making has compared with prior art significantly reduced manufacturing procedure, and simultaneously, required producers and production equipment also greatly reduce, thereby reduces production costs and shorten the production cycle.

Claims

1. the manufacture method of a commutator, this commutator comprises that one has the commutator matrix (1) of a plurality of insulation tanks (12) at circumferencial direction, be placed with commutator segment (2) in this insulation tank (12), this commutator segment one end is provided with hook pin (3), it is characterized in that: this hook pin (3) adopts die process to make, described insulation tank (12) adopts location shell (a 4) location and an injection mo(u)lding by the engineering plastics making, the external diameter phase configuration of this location shell and described commutator matrix (1).

2. a kind of manufacture method of commutator according to claim 1, it is characterized in that: described location shell (4) is provided with a plurality of ribs (41) at circumferencial direction, and the width between this rib (41) is bigger 0.01 millimeter to 0.03 millimeter than the width of described insulation tank (12).

3. the manufacture method of commutator according to claim 2 is characterized in that: the width between the described rib (41) is best bigger 0.02 millimeter than the width of described insulation tank (12).

4. the manufacture method of commutator according to claim 2, it is characterized in that: the degree of depth of the described commutator insulation groove of the aspect ratio of described rib (41) (12) is big 0.04 millimeter to 0.06 millimeter.

5. the manufacture method of commutator according to claim 4, it is characterized in that: the degree of depth of the described commutator insulation groove of the aspect ratio of described rib (41) (12) is big 0.05 millimeter.

6. the manufacture method of commutator according to claim 1, it is characterized in that: the afterbody of described hook pin (3) is provided with a tapering body (31).

7. the manufacture method of commutator according to claim 1, it is characterized in that: described commutator process for making is: row is drawn in described commutator segment blanking, and----this commutator segment of punching out----this commutator segment is cleaned in vibration, and--------press and insert described commutator matrix moulding----curing, and------------polishing described hook pin (3)----is up to the standards to bend described hook pin (3) in polishing to remove the material handle to arrange this commutator segment by this commutator segment.

8. the manufacture method of commutator according to claim 1 is characterized in that: the making of described commutator matrix (1) employing engineering plastics.

9. the manufacture method of commutator according to claim 1 is characterized in that: described location shell (4) the employing nylon material making of being made by engineering plastics.