CN100418693C - Cold xtrusion manufacturing method of cylindrical commutator - Google Patents
Cold xtrusion manufacturing method of cylindrical commutator Download PDFInfo
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- CN100418693C CN100418693C CNB2005100621243A CN200510062124A CN100418693C CN 100418693 C CN100418693 C CN 100418693C CN B2005100621243 A CNB2005100621243 A CN B2005100621243A CN 200510062124 A CN200510062124 A CN 200510062124A CN 100418693 C CN100418693 C CN 100418693C
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- commutator
- cylindrical
- commutator segment
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Abstract
The present invention discloses a cold extrusion manufacturing method of a cylindrical commutator. Firstly, a copper pipe of which the outside diameter is similar to that of a required commutator is cut into a cylindrical pipe material of which the length is similar to that of a commutator segment of a product, and the cylindrical pipe material forms an integral commutator segment lay-up body of which the cross section forms a double figure 7 by carrying out cold extrusion molding after annealing. Afterwards, a cylindrical commutator finished product is made through the process steps of compression, solidification, inner hole processing, cylindrical turning, milling of groove, polishing, etc. The present invention has the advantages of leaving out a complicated slice arranging process step, lightening workers' labor intensity, enhancing the utilization rate of materials and production efficiency and reducing production cost. Slices of an integral commutator segment set are arranged homogeneously, and a semifinished product has small radial runout during the process step of cylindrical turning, so produced cylindrical commutator finished product has good circularity and the use performance of the cylindrical commutator in an electric machine is enhanced.
Description
One, technical field
The present invention relates to the manufacture method of the cylindrical commutator that a kind of motor uses.
Two, background technology
Prior motor is divided two kinds with commutator is general: cylindrical commutator and end commutator, wherein the manufacture method of cylindrical commutator is generally the screening formula, its technology is: at first wire rod is carried out rolling, annealing, drawing, then the wire rod punching out after the drawing moulding is become the commutator segment monolithic, again through operations such as screening, compacting, curing, endoporus processing, turning, groove milling, polishings, and make the commutator finished product.
Wherein " drawing, punching out " operation is that the wire rod after the rolling (claiming ladder row again) is drawn into the wire rod (two ends that are wire rod are asymmetric: one is long and the other is short) that is " worker " font, and punching out becomes foot to be the commutator segment monolithic of swallowtail-shaped structure again.Because ladder is arranged discontinuity, the drawing difficulty increases during drawing, and size is difficult for guaranteeing; And must also need carry out " turning " operation after forming blank towards the part material except that dovetail owing to require to go out swallowtail shape when punching out, need car to remove more copper material, so stock utilization is low, causes waste of material." screening " operation is to utilize by hand the commutator segment monolithic is embedded one by one by same direction in the groove of special slice arranging apparatus, mica sheet is inserted between each commutator segment, then with tightening up the thing banding again.This screening complex procedures, loaded down with trivial details, production efficiency is low, the cost height, also need simultaneously through personnel's manual operations, make commutator segment and this slice arranging apparatus exist the gap, the half-finished circular runout of commutator is bigger when causing the turning operation, makes the outer circularity of commutator relatively poor, thereby influenced the serviceability of motor.
Three, summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, and the cold xtrusion manufacturing method of the cylindrical commutator that a kind of technology is simple, stock utilization is high is provided.
Purpose of the present invention realizes by following technical solution: a kind of cold xtrusion manufacturing method of cylindrical commutator, at first will cut into the cylindrical tubing that the commutator segment length with product is more or less the same with the copper pipe that desired commutator brush track diameter is more or less the same, and after annealing, carry out cold extrusion shaped to this cylindrical tubing again and form the cross section and be two " 7 " font monoblock type commutator segment group base substrates; Make the cylindrical commutator finished product by operations such as compacting, curing, endoporus processing, turning, groove milling, polishings then.
Described this cylindrical tubing is carried out cold extrusion shaped and forms the cross section and be two " 7 " font monoblock type commutator segment group base substrates, its inwall has the internal tooth that the quantity cross section identical with commutator segment becomes cup-shaped.
After adopting the present invention,, production technology is simplified owing to before " compacting " operation, only need to have replaced former rolling, drawing, annealing, punching out, screening operation through cutting, annealing, cold extrusion operation; Wherein cold extrusion shaped operation directly extrudes cylindrical tubing become two " 7 " font monoblock type commutator segment group base substrates, need not use mica sheet, no copper material loss (need not go out swallowtail shape), dimensionally stable, thereby saved original loaded down with trivial details screening operation, alleviate working strength of workers, improved stock utilization and production efficiency, reduced production cost.And arrange between the sheet of this monoblock type commutator segment group evenly, when carrying out the turning operation half-finished circular runout little, the cylindrical commutator finished product circularity of output is good, has improved its serviceability in motor.
Four, description of drawings
The present invention is described in further detail below in conjunction with accompanying drawing and embodiment.
Fig. 1 is the structural representation of the cylindrical tubing behind cutting action among the present invention.
Fig. 2 among the present invention after the cold extrusion operation cross section be the cutaway view of two " 7 " font monoblock type commutator segment group base substrates.
Fig. 3 is the A-A cutaway view of Fig. 2.
The structural representation of the cylindrical commutator finished product that Fig. 4 makes for the present invention.
Five, the specific embodiment
The cold xtrusion manufacturing method of cylindrical commutator of the present invention is: at first will cut into the cylindrical tubing (as shown in Figure 1) that the commutator segment length with product is more or less the same with the copper pipe (use cutting machine) that desired commutator brush track diameter is more or less the same, after annealing, carry out cold extrusion shaped to this cylindrical tubing (use the 100T hydraulic press and adopt the cold extrusion particular manufacturing craft) again and form the cross section and be two " 7 " font (one positive one anti-" 7 " font) monoblock type commutator segment group base substrates (as shown in Figure 2), its inwall has the internal tooth (as shown in Figure 3) that the quantity cross section identical with commutator segment becomes cup-shaped, to increase the contact area of commutator segment and moulding compound, the mechanical strength of commutator is improved; Make cylindrical commutator finished product (as shown in Figure 4) by operations such as compacting, curing, endoporus processing, turning, groove milling, polishings then.
The cylindrical commutator unit price cost of producing by above-mentioned manufacture method can reduce 30-35%, and stock utilization can improve 30-35%, greatly reduces production cost.Can be widely used on the motors such as family car starter.
Claims (2)
1. the cold xtrusion manufacturing method of a cylindrical commutator, it is characterized in that: at first will cut into the cylindrical tubing that the commutator segment length with cylindrical commutator is more or less the same with the copper pipe that desired commutator brush track diameter is more or less the same, and after annealing, carry out cold extrusion shaped to this cylindrical tubing again and form the cross section and be two " 7 " font monoblock type commutator segment group base substrates; Make the cylindrical commutator finished product by compacting, curing, endoporus processing, turning, groove milling, polishing process then.
2. the cold xtrusion manufacturing method of cylindrical commutator as claimed in claim 1 is characterized in that: described cross section is two " 7 " font monoblock type commutator segment group base substrates, and its inwall has the internal tooth that the quantity cross section identical with commutator segment becomes cup-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100621243A CN100418693C (en) | 2005-12-20 | 2005-12-20 | Cold xtrusion manufacturing method of cylindrical commutator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100621243A CN100418693C (en) | 2005-12-20 | 2005-12-20 | Cold xtrusion manufacturing method of cylindrical commutator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1785582A CN1785582A (en) | 2006-06-14 |
| CN100418693C true CN100418693C (en) | 2008-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100621243A Expired - Fee Related CN100418693C (en) | 2005-12-20 | 2005-12-20 | Cold xtrusion manufacturing method of cylindrical commutator |
Country Status (1)
| Country | Link |
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| CN (1) | CN100418693C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102544960A (en) * | 2012-02-21 | 2012-07-04 | 瑞安市博宇电器有限公司 | Special commutator for car starting motor |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104795713A (en) * | 2015-03-04 | 2015-07-22 | 浙江长城换向器有限公司 | Reversed L-shaped commutator bar cold-extruding mechanism |
| CN109454123A (en) * | 2018-10-31 | 2019-03-12 | 河北欧通有色金属制品有限公司 | A kind of processing method of the toothed circular copper pipe of inner wall |
| CN109604959B (en) * | 2018-12-18 | 2021-02-02 | 瑞安市长虹车辆配件有限公司 | Machining process for inner groove of steering gear valve sleeve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3958326A (en) * | 1974-03-03 | 1976-05-25 | Nippondenso Co., Ltd. | Method of manufacturing commutator |
| GB1459059A (en) * | 1974-04-30 | 1976-12-22 | Kabel Metallwerke Ghh | Method of producing commutators composed of copper or a copper alloy and insulating material |
| US4621514A (en) * | 1983-09-15 | 1986-11-11 | Robert Bosch Gmbh | Method of making an intermediate stage, intermediate blank for a dynamo electric machine commutator ring, and apparatus to carry out the method |
| FR2585521A1 (en) * | 1985-07-26 | 1987-01-30 | Bruss Respub Nauc | Integrally moulded commutator mfr. for electrical machine |
| CN1391319A (en) * | 2002-07-30 | 2003-01-15 | 丁明荣 | Technology for manufacturing commutator with cold-pressed end face and its product |
| CN1674371A (en) * | 2005-04-22 | 2005-09-28 | 陈阿陆 | Method for producing end commutator |
| CN1694316A (en) * | 2005-06-10 | 2005-11-09 | 浙江长城换向器有限公司 | Manufacturing method of commutator and its product |
-
2005
- 2005-12-20 CN CNB2005100621243A patent/CN100418693C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3958326A (en) * | 1974-03-03 | 1976-05-25 | Nippondenso Co., Ltd. | Method of manufacturing commutator |
| GB1459059A (en) * | 1974-04-30 | 1976-12-22 | Kabel Metallwerke Ghh | Method of producing commutators composed of copper or a copper alloy and insulating material |
| US4621514A (en) * | 1983-09-15 | 1986-11-11 | Robert Bosch Gmbh | Method of making an intermediate stage, intermediate blank for a dynamo electric machine commutator ring, and apparatus to carry out the method |
| FR2585521A1 (en) * | 1985-07-26 | 1987-01-30 | Bruss Respub Nauc | Integrally moulded commutator mfr. for electrical machine |
| CN1391319A (en) * | 2002-07-30 | 2003-01-15 | 丁明荣 | Technology for manufacturing commutator with cold-pressed end face and its product |
| CN1674371A (en) * | 2005-04-22 | 2005-09-28 | 陈阿陆 | Method for producing end commutator |
| CN1694316A (en) * | 2005-06-10 | 2005-11-09 | 浙江长城换向器有限公司 | Manufacturing method of commutator and its product |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102544960A (en) * | 2012-02-21 | 2012-07-04 | 瑞安市博宇电器有限公司 | Special commutator for car starting motor |
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| Publication number | Publication date |
|---|---|
| CN1785582A (en) | 2006-06-14 |
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