CN102013765B - Process for making double-shaft insulating sleeve of motor rotor shaft for electric tool - Google Patents
Process for making double-shaft insulating sleeve of motor rotor shaft for electric tool Download PDFInfo
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- CN102013765B CN102013765B CN201010245088.5A CN201010245088A CN102013765B CN 102013765 B CN102013765 B CN 102013765B CN 201010245088 A CN201010245088 A CN 201010245088A CN 102013765 B CN102013765 B CN 102013765B
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Abstract
The invention provides a process for making a double-shaft insulating sleeve of a motor rotor shaft for an electric tool and relates to a double-shaft insulating sleeve. An armature stamping, a rotor shaft and a sleeve are assembled into an armature core assembly, and a corresponding pressure is generated between the stamping and the sleeve and between the shaft and the sleeve by utilizing the action of matching interference among the three parts to form pressure strain so that the double-shaft insulating sleeve has higher torsional strength when a motor runs in a high speed; the double-shaft insulating sleeve has high insulating property, and can resist the voltage of 8000 V; the double-shaft insulating sleeve has fire resistance, good concentricity, simple processing procedure, mass production, high processing efficiency, short period and easy guarantee on the quality of processed workpieces; and the traditional shaft insulating and mould-pressing process is changed into a simple assembling process.
Description
Technical field:
The present invention relates to a kind of double insulation sleeve pipe, be specifically related to process for making double-shaft insulating sleeve of motor rotor shaft for electric tool.
Background technology:
Double insulation technique is the key technology of electric tool, is the main insulation form of II type electric tool, and wherein armature spindle insulation technology is again one of important technique of electric tool manufacture.It is to hand-hold type double insulation electric tool, to guaranteeing that personal safety plays decisive role.
China develops double insulation product since the sixties, so far existing 40 years history.Double insulation technology has experienced starting, exploitation, introduction, has developed each stage.In the meantime, the material of armature spindle insulation, progressively from epoxy powder, glass fibre reinforced nylon, glass fiber reinforced phenolic plastics, unsaturated polyester plastic, to epoxy enhancement mode plastics.The version of armature spindle insulation, has spindle insulation, gear insulation, auger spindle insulation, the insulation of one-shot forming axle and the insulation of post forming axle.Now, the molding mode of China's rotor is all the insulation of one-shot forming axle and the insulation of post forming axle.Insulating material generally adopts the prosperous WH type epoxy molding plastic that reaches chemical plant production of Wuxi City.This material has good mechanical performance and electric property (the large 150MPa of bending strength, the large 10kJ/m of impact strength
2, specific insulation is greater than 1.0*10
12a Ω .cm ° electrical strength is greater than 17kV/mm), higher heat resistance (heat distortion temperature reaches more than 200 ℃), and there is good adhesion with metal parts, the features such as building-up property is good, can meet the requirement of product completely, axle insulation technology has reached quite level.One-shot forming axle insulation: stingy electricity punching and armature spindle are located respectively in mould, and epoxy molding plastic, by transfer modling technique press-in die die cavity, is connected armature spindle and armature stamping.Be characterized in: moulding process is simple, rotor integral rigidity is good, and shortcoming is: cannot guarantee the concentricity of rotor, for the accuracy of manufacture of compression mould, have higher requirement.Post forming axle insulation: first press a layer insulating with epoxy molding plastic at armature spindle cylindrical, then insulation cylindrical is carried out to car. mill processing drying and processing, then armature stamping is pressed on insulation cylindrical.Be characterized in: moulding process is fairly simple, can one-mold multiple-member, the quality of workpiece easily guarantees. easily produces in enormous quantities.Shortcoming: rear road machining operation is more.
Summary of the invention:
The object of this invention is to provide a kind of process for making double-shaft insulating sleeve of motor rotor shaft for electric tool, its manufacturing procedure is simple, as long as a secondary pressing clamp, a hydraulic press can be mass-produced, processing effect is high, and the cycle is short, and the quality of processing work also easily guarantees.
In order to solve the existing problem of background technology, the present invention is by the following technical solutions: its manufacture craft is: 1, select round steel that the finished tolerance of coreless grinding machine is cylindrical ± 0.01mm as mould, use acetone cleaning die, treat that the acetone on mould volatilizees totally completely, at die surface, be coated with uniformly the release agent that last layer prepares, put into baking oven and dry 2 hours through 180 ℃ of-200 ℃ of high temperature, till treating that release agent is penetrated into die surface completely; Then use 24 ingot disk braiding machines, by the angles of 75 °, mould being enrolled in glass fibre is ground floor, this ground floor is shelf layer, make on the basis using the same method at ground floor, to be numbered with the second layer (packing layer), make its half-finished external diameter, between the large 0.5-0.8mm of external diameter requiring than finished product, then take off, with aluminium, order bundling machine and tighten two ends; Put into baking oven through the dehumidifying processing of 50 ℃.
2, get WSR6101 epoxy resin 5000G, 6350 tough epoxy resin 400-600G, methyl hexahydrophthalic anhydride 3300-4950G, K54 promoter 22-27.5G, glycidyl ether propyl group trimethoxy silane coupler 22-44G, first WSR6101 epoxy resin is heated to 50 ℃, until material viscosity step-down, pour in stirring vessel together with 6350 tough epoxy resins, methyl hexahydrophthalic anhydride, add glycidyl ether propyl group trimethoxy silane coupler fully to stir 20 minutes, then add K54 promoter, then stir 20 minutes; During stirring, this stirring vessel must remain between 40 ℃-50 ℃ of external heats.
3, the impregnant preparing is put into vacuum and treat batch can, extracting vacuum approximately 20 minutes is while stirring put into impregnation tank extracting vacuum 10 minutes the semi-finished product that weave simultaneously, below 50pa, less better to vacuum degree, vacuum is treated to the vacuum pump of batch can cuts out, open vacuum and treat the vent valve of batch can, open vacuum and treat the baiting valve of batch can, by the conduit handle material between two tanks, utilize negative pressure of vacuum principle, be drawn in impregnation tank, make material cover half-finished height completely, close baiting valve, make to extract again the vacuum of 10 minutes after impregnation tank charging, after time arrives, open the vent valve of impregnation tank, close vacuum and treat the vent valve of batch can, open vacuum and treat that the vacuum pump extracting vacuum of batch can treats the vacuum of batch can, utilizing negative pressure of vacuum principle that material is drawn back to vacuum from impregnation tank treats in batch can, the semi-finished product of punishment in advance are soaked in taking-up, in process, forbid collision obtaining, scratch, (noting: impregnation tank and vacuum pipe to be expected must be to remain between 40 ℃-50 ℃ of external heats) is vertically hung in the baking oven of 120 ℃, through the preliminary gel moulding of approximately 50 minutes, and then through 135 ℃ one hour, 150 ℃ one hour, 180 ℃ of later stages of two hours solidify, naturally cooling, the blank of finished product completes.
4, the demoulding: utilize grinder with dust collector, make blank and emery wheel angle at 45 ° be rotated polishing two ends, occur that spark stops, making its two ends that expose mould, of the blank that makes to hit with a hammer, makes its mould and blank loosening, pulls out mould; Cutting: utilizing self-control cutting machine, is that processing length is cut off in benchmark rotation with blank internal diameter; Excircle machining: be to process plug with a plug that is less than blank internal diameter 0.01-0.015mm, utilize blank internal diameter for benchmark, processing excircles, guarantees its concentricity, with the deviation in roundness of cylindrical.
5, with clear water surface cleaning dust, under the environment of 40 ℃, dry, test, use outside micrometer check external diameter, inside micrometer or go-no go gauge check internal diameter, vernier caliper check length, checks withstand voltage leakage current with voltage resistant instrument.
Quill insulation assembly method of the present invention: armature stamping is placed in special fixture fixing, then sleeve pipe 1 is put into or is gently compressed into the endoporus into armature stamping, and to assigned position, the fit tolerance of sleeve pipe 1 cylindrical and punching endoporus, become core assembly, then armature spindle 2 is utilized to the pressure of hydraulic press, axial compression is entered in iron core piece, casing expandable is entered in core stamping, because core stamping and armature spindle 2 are all rigidity, sleeve pipe 1 is extruded between axle and punching, fit tolerance between sleeve pipe 1 endoporus and axle cylindrical, this makes armature spindle sleeve pipe, armature stamping is firmly connected.
The present invention has following beneficial effect: armature stamping, armature spindle, three kinds of Assembly of the parts of sleeve pipe are become to armature core one assembly, and utilize the cooperation interference effect between part, between punching and sleeve pipe, produce corresponding pressure between axle and sleeve pipe, form compressive strain, it is reached when motor runs up, have higher torsional strength; There is high insulating property, the withstand voltage 8000V that reaches; There is anti-flammability; Good concentricity; Manufacturing procedure is simple, produces in enormous quantities, and processing effect is high, and the cycle is short, and the quality of processing work also easily guarantees; Make traditional axle insulation molding die process technique change simple assembly technology into.
Accompanying drawing explanation:
Fig. 1-4 are assembly structure schematic diagram of the present invention.
Embodiment:
Specifically execution mode is by the following technical solutions for this: its manufacture craft is: 1, select round steel that the finished tolerance of coreless grinding machine is cylindrical ± 0.01mm as mould, use acetone cleaning die, treat that the acetone on mould volatilizees totally completely, at die surface, be coated with uniformly the release agent that last layer prepares, put into baking oven and dry 2 hours through 180 ℃ of-200 ℃ of high temperature, till treating that release agent is penetrated into die surface completely; Then use 24 ingot disk braiding machines, by the angles of 75 °, mould being enrolled in glass fibre is ground floor, this ground floor is shelf layer, make on the basis using the same method at ground floor, to be numbered with the second layer (packing layer), make its half-finished external diameter, between the large 0.5-0.8mm of external diameter requiring than finished product, then take off, with aluminium, order bundling machine and tighten two ends; Put into baking oven through the dehumidifying processing of 50 ℃.
2, get WSR6101 epoxy resin 5000G, 6350 tough epoxy resin 400-600G, methyl hexahydrophthalic anhydride 3300-4950G, K54 promoter 22-27.5G, glycidyl ether propyl group trimethoxy silane coupler 22-44G, first WSR6101 epoxy resin is heated to 50 ℃, until material viscosity step-down, pour in stirring vessel together with 6350 tough epoxy resins, methyl hexahydrophthalic anhydride, add glycidyl ether propyl group trimethoxy silane coupler fully to stir 20 minutes, then add K54 promoter, then stir 20 minutes; During stirring, this stirring vessel must remain between 40 ℃-50 ℃ of external heats.
3, the impregnant preparing is put into vacuum and treat batch can, extracting vacuum approximately 20 minutes is while stirring put into impregnation tank extracting vacuum 10 minutes the semi-finished product that weave simultaneously, below 50pa, less better to vacuum degree, vacuum is treated to the vacuum pump of batch can cuts out, open vacuum and treat the vent valve of batch can, open vacuum and treat the baiting valve of batch can, by the conduit handle material between two tanks, utilize negative pressure of vacuum principle, be drawn in impregnation tank, make material cover half-finished height completely, close baiting valve, make to extract again the vacuum of 10 minutes after impregnation tank charging, after time arrives, open the vent valve of impregnation tank, close vacuum and treat the vent valve of batch can, open vacuum and treat that the vacuum pump extracting vacuum of batch can treats the vacuum of batch can, utilizing negative pressure of vacuum principle that material is drawn back to vacuum from impregnation tank treats in batch can, the semi-finished product of punishment in advance are soaked in taking-up, in process, forbid collision obtaining, scratch, (noting: impregnation tank and vacuum pipe to be expected must be to remain between 40 ℃-50 ℃ of external heats) is vertically hung in the baking oven of 120 ℃, through the preliminary gel moulding of approximately 50 minutes, and then through 135 ℃ one hour, 150 ℃ one hour, 180 ℃ of later stages of two hours solidify, naturally cooling, the blank of finished product completes.
4, the demoulding: utilize grinder with dust collector, make blank and emery wheel angle at 45 ° be rotated polishing two ends, occur that spark stops, making its two ends that expose mould, of the blank that makes to hit with a hammer, makes its mould and blank loosening, pulls out mould; Cutting: utilizing self-control cutting machine, is that processing length is cut off in benchmark rotation with blank internal diameter; Excircle machining: be to process plug with a plug that is less than blank internal diameter 0.01-0.015mm, utilize blank internal diameter for benchmark, processing excircles, guarantees its concentricity, with the deviation in roundness of cylindrical.
5, with clear water surface cleaning dust, under the environment of 40 ℃, dry, test, use outside micrometer check external diameter, inside micrometer or go-no go gauge check internal diameter, vernier caliper check length, checks withstand voltage leakage current with voltage resistant instrument.
Referring to Fig. 1-4, this embodiment quill insulation assembly method: armature stamping is placed in the tool of special centre fixing, then sleeve pipe 1 is put into or is gently compressed into the endoporus into armature stamping, and to assigned position, the fit tolerance of sleeve pipe 1 cylindrical and punching endoporus, become core assembly and (see Fig. 1, 2), then armature spindle 2 is utilized to the pressure of hydraulic press, axial compression is entered in iron core piece, casing expandable is entered in core stamping (seeing Fig. 3), because core stamping and armature spindle 2 are all rigidity, sleeve pipe 1 is extruded between axle and punching, fit tolerance between sleeve pipe 1 endoporus and axle cylindrical, this makes armature spindle sleeve pipe, armature stamping be firmly connected (seeing Fig. 4).
This embodiment becomes armature core one assembly armature stamping, armature spindle, three kinds of Assembly of the parts of sleeve pipe, and utilize the cooperation interference effect between part, between punching and sleeve pipe, produce corresponding pressure between axle and sleeve pipe, form compressive strain, it is reached when motor runs up, have higher torsional strength; There is high insulating property, the withstand voltage 8000V that reaches; There is anti-flammability; Good concentricity; Manufacturing procedure is simple, produces in enormous quantities, and processing effect is high, and the cycle is short, and the quality of processing work also easily guarantees; Make traditional axle insulation molding die process technique change simple assembly technology into.
Claims (1)
1. process for making double-shaft insulating sleeve of motor rotor shaft for electric tool, the manufacture craft that it is characterized in that it is: 1, select round steel that the finished tolerance of coreless grinding machine is cylindrical ± 0.01mm as mould, use acetone cleaning die, treat that the acetone on mould volatilizees totally completely, at die surface, be coated with uniformly the release agent that last layer prepares, put into baking oven and dry 2 hours through 180 ℃ of-200 ℃ of high temperature, till treating that release agent is penetrated into die surface completely, then use 24 ingot disk braiding machines, by the angles of 75 °, mould being enrolled in glass fibre is ground floor, this ground floor is shelf layer, make to be numbered with the second layer on the basis using the same method at ground floor, this second layer is packing layer, makes its half-finished external diameter, between the large 0.5-0.8mm of external diameter requiring than finished product, then take off, with aluminium, order bundling machine and tighten two ends, put into baking oven through the dehumidifying processing of 50 ℃, 2, get WSR6101 epoxy resin 5000G, 6350 tough epoxy resin 400-600G, methyl hexahydrophthalic anhydride 3300-4950G, K54 promoter 22-27.5G, glycidyl ether propyl group trimethoxy silane coupler 22-44G, first WSR6101 epoxy resin is heated to 50 ℃, until material viscosity step-down, pour in stirring vessel together with 6350 tough epoxy resins, methyl hexahydrophthalic anhydride, add glycidyl ether propyl group trimethoxy silane coupler fully to stir 20 minutes, then add K54 promoter, then stir 20 minutes, during stirring, this stirring vessel must remain between 40 ℃-50 ℃ of external heats, 3, the impregnant preparing is put into vacuum and treat batch can, extracting vacuum 20 minutes is while stirring put into impregnation tank extracting vacuum 10 minutes the semi-finished product that weave simultaneously, below 50pa, less better to vacuum degree, vacuum is treated to the vacuum pump of batch can cuts out, open vacuum and treat the vent valve of batch can, open vacuum and treat the baiting valve of batch can, by the conduit handle material between two tanks, utilize negative pressure of vacuum principle, be drawn in impregnation tank, make material cover half-finished height completely, close baiting valve, make to extract again the vacuum of 10 minutes after impregnation tank charging, after time arrives, open the vent valve of impregnation tank, close vacuum and treat the vent valve of batch can, open vacuum and treat that the vacuum pump extracting vacuum of batch can treats the vacuum of batch can, utilizing negative pressure of vacuum principle that material is drawn back to vacuum from impregnation tank treats in batch can, the semi-finished product of punishment in advance are soaked in taking-up, in process, forbid collision obtaining, scratch, vertically be hung in the baking oven of 120 ℃, through the preliminary gel moulding of 50 minutes, and then through 135 ℃ one hour, 150 ℃ one hour, 180 ℃ of later stages of two hours solidify, naturally cooling, the blank of finished product completes, 4, the demoulding: utilize grinder with dust collector, make blank and emery wheel angle at 45 ° be rotated polishing two ends, occur that spark stops, making its two ends that expose mould, of the blank that makes to hit with a hammer, makes its mould and blank loosening, pulls out mould, cutting: utilizing self-control cutting machine, is that processing length is cut off in benchmark rotation with blank internal diameter, Excircle machining: be to process plug with a plug that is less than blank internal diameter 0.01-0.015mm, utilize blank internal diameter for benchmark, processing excircles, guarantees its concentricity, with the deviation in roundness of cylindrical, 5, with clear water surface cleaning dust, under the environment of 40 ℃, dry, test, use outside micrometer check external diameter, inside micrometer or go-no go gauge check internal diameter, vernier caliper check length, checks withstand voltage leakage current with voltage resistant instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010245088.5A CN102013765B (en) | 2010-08-05 | 2010-08-05 | Process for making double-shaft insulating sleeve of motor rotor shaft for electric tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010245088.5A CN102013765B (en) | 2010-08-05 | 2010-08-05 | Process for making double-shaft insulating sleeve of motor rotor shaft for electric tool |
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| Publication Number | Publication Date |
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| CN102013765A CN102013765A (en) | 2011-04-13 |
| CN102013765B true CN102013765B (en) | 2014-04-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102710081A (en) * | 2012-06-13 | 2012-10-03 | 常州奥立思特电子有限公司 | Novel series excited machine double-insulation structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1602573A (en) * | 2001-12-11 | 2005-03-30 | 布莱克和戴克公司 | Brushless motor having double insulation |
| WO2007068130A1 (en) * | 2005-12-14 | 2007-06-21 | Abb Research Ltd | High-voltage bushing |
| CN201444610U (en) * | 2009-07-24 | 2010-04-28 | 大连伯顿冠力电机有限公司 | Low-voltage three-phase asynchronous motor for nuclear power plants |
-
2010
- 2010-08-05 CN CN201010245088.5A patent/CN102013765B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1602573A (en) * | 2001-12-11 | 2005-03-30 | 布莱克和戴克公司 | Brushless motor having double insulation |
| WO2007068130A1 (en) * | 2005-12-14 | 2007-06-21 | Abb Research Ltd | High-voltage bushing |
| CN201444610U (en) * | 2009-07-24 | 2010-04-28 | 大连伯顿冠力电机有限公司 | Low-voltage three-phase asynchronous motor for nuclear power plants |
Non-Patent Citations (2)
| Title |
|---|
| 王书豪等.复合材料轴绝缘套管的性能与应用.《电动工具》.2005,(第2期),13-14. * |
| 黄国鑫.Polygon轴绝缘技术的应用研究.《电动工具》.2001,(第2期),5-8. * |
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