CN85100035A - The aluminum motor frame and the manufacture method thereof of cover in the band cast iron - Google Patents
The aluminum motor frame and the manufacture method thereof of cover in the band cast iron Download PDFInfo
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- CN85100035A CN85100035A CN85100035.5A CN85100035A CN85100035A CN 85100035 A CN85100035 A CN 85100035A CN 85100035 A CN85100035 A CN 85100035A CN 85100035 A CN85100035 A CN 85100035A
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- cover
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- stator core
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Abstract
The invention belongs to motor manufacturing technology, is the method for the aluminum motor frame device of cover in a kind of production band cast iron (or steel).In order to solve traditional stator core of heating in advance, electric efficiency of being brought with stator core cast aluminum alloys electric machine stand technology and problem such as power factor is on the low side, product rejection rate is high, waste of material is serious then.The present invention is the way that changes the stator core preheating, cover in the pre-processed cast iron (or steel) is cast as one with the motor aluminum alloy support, become the aluminum motor frame of cover in the band cast iron (or steel), make the stator core of winding and the interior cover interference close-fitting in the aluminum alloy bed then.
Description
The invention belongs to motor manufacturing technology, is the method for the aluminum motor frame device of cover in a kind of production band cast iron (or steel).Specifically in advance with cover in the cast iron (or steel), when the cast aluminum alloys support, be cast into one with support, be processed into a kind of with in the aluminum motor frame of cover, the interior cover interference close-fitting in winding stator core and the aluminum alloy bed of having with dipping lacquer, oven dry becomes the stator part of motor then.
The motor product of the aluminum alloy bed of Xiao Shouing in the market is as JM
2, JM
3Series carpenter motor, its aluminum alloy bed casting process are in advance with about 460～550 ℃ of stator core preheatings, when the cast aluminum alloys support, stator core and support are cast as integral body then.Again with garden location processing support end face, seam in the stator core, mill the stator that footing, boring, rule, arrangement coil paint-dipping, oven dry become the aluminum alloy bed motor.Come condition of production reflection according to domestic alloy electric machine main manufacturer Jingdezhen Electric Machinery Plant recent two decades, take the motor product of the aluminum alloy bed of this explained hereafter to have the problem of four aspects:
(1) the motor inherent quality is relatively poor:
1. when the aluminum alloy bed of this nothing of casting cover, stator core must be heated to 460～550 ℃, otherwise is with the support unshakable in one's determination can't moulding.Yet unshakable in one's determination insulating barrier between the silicon steel sheet certainly will be subjected to bigger destruction after 460～550 ℃ of heat, causes eddy current loss to increase, magnetic property degenerates, cause no-load current, no-load loss generally bigger than normal, the motor feels hot, and efficient and power factor are difficult to reach designing requirement.
2. on the other hand, stator core causes the distortion of colliding with under distortion and the hot state in high-temperature heating process, cause that stator slot is crooked, notch is uneven, tooth portion flicks, the garden surpasses tolerance in the stator, brings many difficulties for rule and assembling, directly influences the motor inherent quality.
(2) scrappage height, waste of material is serious:
1. support is in casting cycle, preheat temperature unshakable in one's determination is difficult to control (relevant with position and the factor such as stacking of iron core in stove), be lower than 460 ℃ or be higher than 550 ℃ and all produce a series of casting flaws, add serious influence of leaking various factorss such as aluminium in the stator slot, make support casting percent defective up to 10～12%.For the motor that does not have footing to lean on bearing to install, can not satisfy the specific (special) requirements of its structure with the technology of cast aluminum alloys electric machine stand unshakable in one's determination, scrappage is more than 30%.Water the casting more again of bad support if break, on the one hand stator core is subjected to gravity and knocks, and produces gross distortion, iron core heat once more on the other hand, and the magnetic property of silicon steel sheet further is damaged again.
Support has watered out though 2. have partly, has also passed through car, mills, the processing of each procedure such as brill, because the gross distortion that causes in heating process unshakable in one's determination, the electrician can't rule and scrapping of causing accounts for 1%.
3. because stator core causes gross distortion in heating process, make the interior garden of stator seriously overproof.Though through rule, soak baking, the rotor dress is not entered during general assembly, is laid the complete machine of scrapping and accounts for 3～4%.
4. because stator core makes scaling loss unshakable in one's determination through heat, no-load current is excessive, no-load loss is too high, causes complete machine to scrap and accounts for more than 2%.
(3) labor strength is big, and production efficiency is low:
Because stator core casts with support, the weight of workpiece is heavy especially, at the car of support, mill, increased working strength of workers greatly in each procedure such as brill and rule, arrangement, dipping lacquer, oven dry.Especially rule, the arrangement labour intensity big, production efficiency is low.Because band support rule, arrangement, workman's operation easier is big, also brings adverse influence for quality, is example with the carpenter's motor with cast aluminum alloys electric machine stand unshakable in one's determination, and puncture rate that it is withstand voltage exceeds 20～30% than common electrical of the same type is confidential.
(4) can't satisfy user's specific (special) requirements:
Carpenter's motor with aluminum alloy bed, the electric machine main shaft overwhelming majority is as the direct mounting cutter of unit head, motor is subjected to displacement requirement at the motor footing and install between the basis except that with four screw attachment when avoiding the electric machine main shaft bearing load, also requirement can add with pin and connects, but because the motor footing is single cast aluminium alloy, insufficient strength and can't satisfy this specific (special) requirements of user.
Also have a kind of aluminum motor frame manufacturing technology, the production method that (NO3408301979,11,30 applications) are indicated as United States Patent (USP) is to adopt adhesive bonding method, and stator core and casing are got up with epoxy resin bonding, and stator core must heat yet.But this technology is comparatively complicated, and to the requirement height of adhesive.
Purpose of the present invention is exactly to solve the stator core of alloy electric machine without preheating, avoid magnetic property to be damaged, improve the processing technology of support, improve electric efficiency and power factor (PF), improve the installation accuracy of motor on lathe, reduce raw materials consumption, reduce labor intensity, improve work efficiency and product qualified rate.
The aluminum motor frame of cover in the band cast iron of the present invention (or steel), compared with prior art, difference is that aluminum motor frame has cover in the cast iron of a thin-walled (or steel).
For dissimilar aluminum alloy bed motors, adopt difform interior cover respectively.
1. the electric machine stand footing need not add the alloy electric machine that connects with pin with the installation basis except that connecting by four stone bolts, adopts and overlaps (Figure of description 1) in the straight garden tube cast iron (or steel).
2. the electric machine stand footing is basic except that connecting by four stone bolts with installation, also must add the alloy electric machine (the most occasions of carpenter's motor have this requirement) that connects with pin, adopt cover (Figure of description 2) in the straight garden tube band footing cast iron (or steel), the cover footing is contained by electric machine stand footing aluminium alloy in being somebody's turn to do, thereby has improved the intensity of electric machine stand footing.
3. electric machine stand is not with footing, by cover (Figure of description 3) in motor (code name of structure and installation form is defined as IM9301 in IEC34-7) the straight garden tube band bearing cast iron of employing (or steel) of bearing installation.
Electric machine stand production technology key of the present invention is, in advance length is equal to or greater than the interior cover of thin wall iron (or steel) of stator core length, when the cast aluminum alloys support and support cast integral body, carry out metal cutting processing again, aluminum motor frame (Figure of description 4) stator core that obtains cover in the band need not be heated, directly rule, dipping lacquer, oven dry, be processed into the stator core of band winding, cover interference close-fitting in the stator core of winding and the cast iron of inboard wall of base (or steel) will be arranged then, become the stator of motor.
The invention process method is to place earlier cover in the cast iron (or steel) that a preheating (temperature is 550～600 ℃) crosses (in the Figure of description 5 14) in support Cast Aluminum Dies die cavity, carries out support then and casts.
Its technical process is as follows:
With casting ladle will reach temperature (720～760 ℃, should not above 780 ℃) and the aluminium liquid in Qinghua pour in the insulation crucible.
2. will be preheated to 500～550 ℃ following cap (in the Figure of description 5 5) and be placed on the shunting cap (in the Figure of description 5 15), require the center that aligns.
3. be placed on down on the cap after interior cover being blown off, require the center that aligns.
4. start and take blame for others (in the Figure of description 5 11), descending is installed in last cap on the piston rod (in the Figure of description 5 10) (in the Figure of description 5 13), closes up four middle moulds (in the Figure of description 5 6), pressurizes and makes the mould close-fitting.
5. fill type, and 30～60 seconds of pressurize.
6. exit, take off middle mould, go up to take blame for others and take out foundry goods simultaneously.
7. go the cast gate and the cap of backing off promptly to get the support foundry goods.
8. metal cutting processing back support promptly has the interior cover of a thin-walled (look motor size and decide wall thickness), and the stator core of winding and the interior cover interference close-fitting in the support will be arranged then.
The present invention is compared with the prior art rational in infrastructure, and is easily manufactured, need not increase to invest and establish Standby. To adopt among the present invention the ym90s-2 (3 kilowatts of with straight garden tube inner sleeve cast aluminum alloy bed) motor is as example, efficient on average improves 1.7%, and power factor on average improves 1.8%, and every motor wire-inserting was reduced to 40 minutes by former 90 minutes, improve work efficiency, reduced labor strength. Because the raising of product quality can save material in a large number, reduce fuel, power consumption. Straight garden tube with the aluminum alloy bed of footing inner sleeve except the effect that has with straight garden tube inner sleeve aluminum alloy bed, when the footing of electric machine stand assembles with the installation basis, can improve the intensity of aluminum alloy bed footing, at electric machine stand and install between the basis except with 4 screw attachment, can add with pin and connect, avoid the motor-shaft extending bearing load that motor is subjected to displacement, thereby guaranteed wood craft machines main shaft precision. Directly the garden tube except the effect that has with straight garden tube inner sleeve aluminum alloy bed, is by upper and lower two bearings and wood craft machines location because of this type of motor with the aluminum alloy bed of bearing inner sleeve also. Traditional manufacturing process is when the casting support, by hand two bearings are filled in respectively in the two block casting aluminum dipping form chambeies, then together with the stator core support of casting, complex process, work efficiency is low, bearing is drawn out easily during the demoulding, and two independent bearings are difficult consistent with heating-up temperature unshakable in one's determination, and percent defective is up to 30%. Adopt straight garden tube band bearing inner sleeve cast aluminum alloys support, because bearing and garden tube inner sleeve are whole, the mechanical strength height, can not break during the demoulding, and process a straight garden tube band bearing inner sleeve than two independent bearing precision height of processing, easy and simple to handle, save man-hour, improve work efficiency.
Because the alloy electric machine kind is many, benefit is also inconsistent, only take the motor for woodworking of a production of Jingdezhen Electric Machinery Plant as example, calculate by annual production 13000 kilowatts (these factory's motor for woodworking actual productions in 1981), employing just can be saved 23.7 ten thousand yuan for country in 1 year with the technology of inner sleeve cast aluminum alloys electric machine stand. Calculated by 20 years product life cycles, can be at least country and economize on the use of funds 474.5 ten thousand yuan. Even product updates again, this technology also will continue its effect of performance.
The Figure of description explanation:
Cover in the Figure of description 1 straight garden tube cast iron (or steel)
Cover in the Figure of description 2 straight garden tube band footing cast irons (or steel)
Cover in the Figure of description 3 straight garden tube band bearing cast irons (or steel)
The aluminum motor frame of cover in the Figure of description 4 band cast irons (or steel) is among the figure
The 1-aluminum alloy bed
Cover in the 2-
Figure of description 5 aluminum alloy beds casting schematic diagram is among the figure
Seam circle under the 3-screw 4-support of 1-work top 2-chassis
The last extension dish of mould 7-screw 8-among the cap 6-under the 5-
9-cover plate 10-piston rod 11-takes blame for others
Seam circle 13-goes up cover 15-shunting cap in the cap 14-on the 12-support
Claims (7)
1, the present invention is a kind of aluminum motor frame, and its technical characterictic is that this aluminum motor frame has cover in the cast iron.
2, according to claims 1 described support, cover shape is a straight garden tube in it.
3, according to claims 1 described support, cover shape is a straight garden tube band footing in it.
4, according to claims 1 described support, cover shape is a straight garden tube band bearing in it.
5, according to claims 1 described support, cover neighboring is polygonal in it.
6, according to claims 1 described support, cover is a steel in it is characterized in that.
7, a kind of aluminum motor frame manufacture method is characterized in that: process cover in advance, when the cast aluminum alloys electric machine stand, cover is cast into one with aluminum alloy bed in making, and becomes the aluminum motor frame of cover in the band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85100035.5A CN1004598B (en) | 1985-04-01 | 1985-04-01 | Aluminuium-alloy electric machine casing with cast-iron inner bushing and its manufactural process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85100035.5A CN1004598B (en) | 1985-04-01 | 1985-04-01 | Aluminuium-alloy electric machine casing with cast-iron inner bushing and its manufactural process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85100035A true CN85100035A (en) | 1986-08-06 |
| CN1004598B CN1004598B (en) | 1989-06-21 |
Family
ID=4790833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85100035.5A Expired CN1004598B (en) | 1985-04-01 | 1985-04-01 | Aluminuium-alloy electric machine casing with cast-iron inner bushing and its manufactural process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1004598B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532321A (en) * | 2013-10-25 | 2014-01-22 | 中电电机股份有限公司 | Laminating tool of direct current motor base |
| CN105006928A (en) * | 2015-07-30 | 2015-10-28 | 惠州市威盛工业有限公司 | End cover and motor frame integrated cast-molding method and bearing steel sleeve support positioning device |
| CN107070052A (en) * | 2017-05-27 | 2017-08-18 | 北京新能源汽车股份有限公司 | The manufacture method of electric machine casing and electric machine casing |
| CN109274201A (en) * | 2018-09-14 | 2019-01-25 | 山东汇丰铸造科技股份有限公司 | A kind of motor lines packet heat-conducting type cast iron |
-
1985
- 1985-04-01 CN CN85100035.5A patent/CN1004598B/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532321A (en) * | 2013-10-25 | 2014-01-22 | 中电电机股份有限公司 | Laminating tool of direct current motor base |
| CN105006928A (en) * | 2015-07-30 | 2015-10-28 | 惠州市威盛工业有限公司 | End cover and motor frame integrated cast-molding method and bearing steel sleeve support positioning device |
| CN105006928B (en) * | 2015-07-30 | 2017-05-31 | 惠州市威盛工业有限公司 | The casting integrated forming method of end cap support and bearing steel bushing supporting and positioning device |
| CN107070052A (en) * | 2017-05-27 | 2017-08-18 | 北京新能源汽车股份有限公司 | The manufacture method of electric machine casing and electric machine casing |
| CN109274201A (en) * | 2018-09-14 | 2019-01-25 | 山东汇丰铸造科技股份有限公司 | A kind of motor lines packet heat-conducting type cast iron |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1004598B (en) | 1989-06-21 |
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