CN103949958A - Abrasive belt grinding machine for crankshaft - Google Patents
Abrasive belt grinding machine for crankshaft Download PDFInfo
- Publication number
- CN103949958A CN103949958A CN201410104579.6A CN201410104579A CN103949958A CN 103949958 A CN103949958 A CN 103949958A CN 201410104579 A CN201410104579 A CN 201410104579A CN 103949958 A CN103949958 A CN 103949958A
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- CN
- China
- Prior art keywords
- grinding machine
- inverted
- abrasive band
- abrasive belt
- crankshaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
- B24B21/02—Machines or devices using grinding or polishing belts; Accessories therefor for grinding rotationally symmetrical surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
- B24B21/18—Accessories
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention provides an abrasive belt grinding machine for a crankshaft. The abrasive belt grinding machine for the crankshaft comprises an inverted U-shaped shell which is internally provided with an abrasive belt grinding machine body, wherein the abrasive belt grinding machine body comprises abrasive belt reeling shafts which are respectively arranged at two sides of the lower part of the inverted U-shaped shell, an abrasive belt bypasses a pinch roller on the upper part of the inverted U-shaped shell and is wound on the abrasive belt reeling shafts on two sides of the lower part of the inverted U-shaped shell, and each abrasive belt reeling shaft is connected with a driving motor. According to the abrasive belt grinding machine provided by the invention, external grinding of a crankshaft for a large-size ship can realized, grinding can be carried out on any large sleeping carriage, and the glossiness can be improved by one or two grades on the basis of the glossiness of the machining surface of an original machine. Compared with a special complicated grinding machine, the abrasive belt grinding machine disclosed by the invention has the advantages that the manufacturing cost is only 1/1000 that of the special completed grinding machine, and complicated process and operation skills are omitted.
Description
technical field:
The present invention relates to a kind of bent axle abrasive band grinding machine, belong to sbrasive belt grinding equipment technical field.
background technology:
Bent axle has different size specifications and purposes, widely different, complex-shaped.Generally all by expensive special-purpose crankshaft toothed wheel and grinding machine, complete Crankshaft Machining.On large ship diesel engine Large Crankshaft especially bent axle many, turn that footpath is large, overlength, overweight, be once great technical bottleneck of Power of Chinese Shipbuilding Industry always.The whole world only has four, five countries to possess strength and the ability of manufacturing crankshaft used for large boat.Always under one's control at the manufacture view of bent axle in the process that China Xiang world shipbuilding big country target is forged ahead courageously.By blockade on new techniques and fleecing.Until Shanghai Heavy Machinery Plant takes the lead in obtaining technological break-through before more than ten years in the whole nation, go through many hardships, introduced the high crankshaft toothed wheel of external price, finally about 2005, first bent axle manufacture is successful.Rear Shanghai electricity Qi group has built Chinese first hand crank axle for vessel factory in Harbor investment.China is become in the world except Japan and Korea S., Czech, Spain, the 5th country that can produce crank axle for vessel afterwards.
Crank axle for vessel is the heart component in large ship diesel engine.Quality requirement is extremely harsh, and machine adds fineness and required precision is also very high.According to inventor, understand, also there is no at present crankshaft used for large boat grinding machine in the world, cannot carry out grinding to this bent axle, be not non-ly, and can not be also.Existing crankshaft grinding machine is only for the short stroke formula bent axle for solid forging in the world, and is a world-famous puzzle for the grinding of modern large ship large crankshaft bent axle.The cutter processing that is only crankshaft external diameter has been extremely difficult.It is one of core technology key of crank axle for vessel.Introducing on the special-purpose koji bed lathe of Czech, having the cyclone type internal tooth Hough facing cutter of special configuration above, under numerical control condition, completing milling bent axle Excircle machining.Grinding function can not be realized completely.Can only be with finish-milling for having ground.
Why bent axle is difficult to grinding, is exactly the complicated irregular contour of bent axle.On crankshaft toothed wheel, during crankshaft rotating, a plurality of bent axles are to make planet around Japanese rotation around axial line.So bowlder outside crankshaft grinding machine grinding Crankshaft, movement locus is very complicated, by completing under complicated multi-axis numerical control system support.So crankshaft grinding machine special offer is expensive, but this grinding machine only limits the use of shorter in eccentric throw, be the middle-size and small-size solid forged crankshaft of short stroke.
The eccentric throw of the bent axle of combined large crank axle for vessel is larger, and it is narrower that shelves left by crank arm.Do not have space to hold grinding attachment, so be referred to as world-famous puzzle.
summary of the invention:
The object of the invention is provides a kind of bent axle abrasive band grinding machine for the problem of above-mentioned existence, can realize the cylindricalo grinding of crankshaft used for large boat, and grinding is highly polished, and grinding cost is low.
Above-mentioned object realizes by following technical scheme:
Bent axle abrasive band grinding machine, comprise inverted U housing, abrasive band grinding machine is installed in described inverted U housing the inside, described abrasive band grinding machine comprises the abrasive band spool that is arranged on respectively inverted U lower housing portion both sides, abrasive band is walked around the contact roller that is positioned at inverted U housing top and is wrapped on the abrasive band spool of inverted U lower housing portion both sides, and the abrasive band spool described in each connects CD-ROM drive motor.
Described bent axle abrasive band grinding machine, below described inverted U housing top, there is opening, described abrasive band passes inverted U housing at opening place, and described contact roller is arranged on the opening place on inverted U housing top and is positioned at top, abrasive band and compresses abrasive band.
Described bent axle abrasive band grinding machine, described inverted U housing middle part is provided with baffle plate, and described baffle plate is connected to described inverted U housing middle part by bolt or latch.
Described bent axle abrasive band grinding machine, the motor described in two is equal in weight.
Beneficial effect:
1. the present invention can realize the cylindricalo grinding of crankshaft used for large boat, on any large sleeping carriage, all can carry out grinding, has embodied flexibility, simplicity, the applicability of sbrasive belt grinding.Also can reach the smoothness that grinding machine is the same.Abrasive band mill can improve 1 ~ 2 grade on the fineness basis of former machining surface.Select suitable abrasive band abrasive material, abrasive particle, can reach Ra0.4 fineness.Abrasive band function is accomplished high light cleanliness, but can not grind more accurate appearance profile precision.But be not a problem on bent axle, because the finish turning milling of process crankshaft toothed wheel, main shaft is all up to standard with the contour accuracy that turns axle, abrasive band is just played on this basis and is ground off the requirement of micro-tool marks raising fineness.The special-purpose complicated grinding machine of comparing, the manufacturing cost of belt sander, is only the former several one thousandths, of no consequencely inexpensive.Also complicated technology and operative skill have been saved.
2. crank axle for vessel has plurality of specifications and different connecting lever to open a grade size.Each belt sander gauge, can only meet a kind of bent axle of opening grade dimensions and use, but the low cost of manufacture of belt sander, can be to make sizes specification belt sander to adapt to the needs of different size crankshaft grinding polishing.
accompanying drawing explanation:
Fig. 1 is structural representation of the present invention.
Fig. 2 is A-A profile of the present invention.
In figure 1, inverted U housing; 2, abrasive band spool; 3, abrasive band; 4, contact roller; 5, CD-ROM drive motor; 6, opening; 7, baffle plate; 8, bent axle.
the specific embodiment:
The bent axle of the present embodiment abrasive band grinding machine as shown in Figure 1-2, comprise inverted U housing 1, abrasive band grinding machine is installed in described inverted U housing the inside, described abrasive band grinding machine comprises the abrasive band spool 2 that is arranged on respectively inverted U lower housing portion both sides, abrasive band 3 is walked around the contact roller 4 that is positioned at inverted U housing top and is wrapped on the abrasive band spool of inverted U lower housing portion both sides, and the abrasive band spool described in each connects CD-ROM drive motor 5.
Described bent axle abrasive band grinding machine, below described inverted U housing top, there is opening 6, described abrasive band passes inverted U housing at opening place, and described contact roller is arranged on the opening place on inverted U housing top and is positioned at top, abrasive band and compresses abrasive band.
Described bent axle abrasive band grinding machine, described inverted U housing middle part is provided with baffle plate 7, and described baffle plate is connected to described inverted U housing middle part by bolt or latch.
Described bent axle abrasive band grinding machine, the motor described in two is equal in weight.
The present invention is designed to inverted U housing and straddles on bent axle 8 axles, and the thickness that grade size is determined aluminum hull of opening by crank arm, makes it to embed in crank arm, the wide basic covering crankshaft external diameter width in abrasive band, after bent axle rotates, in inverted U housing, abrasive band moves back and forth, and realizes grinding.Inverted U shell structure, can complete after grinding at each bent axle, Left on/Left off easily, and the weight center of gravity of belt sander is in bottom.Guarantee that bent axle makes planet when day turns round, steadily ride over and turn unlikely tumbling on axle, the electric wire of CD-ROM drive motor hangs from above naturally in frock bottom, also can not make it to be wound around workpiece in crankshaft rotating process.
Inverted U housing is to be made by left and right two thick 2 ~ 3mm aluminium sheets punching press or essence casting, and the bottom right diagonal of one the first from left is arranged two CD-ROM drive motors, in order to balance deal.Rectangular abrasive band is wound in the interior plastics zone circle of housing, and motor respectively left-handed dextrorotation in left and right drives abrasive band to move back and forth.Abrasive band passes aluminum enclosure at upper opening position, under the compressing of one group of contact roller, makes abrasive band be close to working face.The contact roller of the present embodiment adopts six nylon roller bearings, and meanwhile, all frock weight, also by these six nylon roller support, is placed on and turns on axle cylindrical abrasive band, and roller bearing lowers frictional resistance while also making the abrasive band of pressurized move back and forth work.When grinding starts, bent axle slowly rotates, and is positioned over belt sander on Crankshaft and starts to start, and abrasive band is grinding Crankshaft outer round surface back and forth back and forth.When crankshaft rotating complete one week, sbrasive belt grinding cylindrical one circle, then rotating circulating is until be ground to drawing requirement.A removable aluminum strip plate is housed respectively at the middle part of the front and back of milling drum inverted U housing, is to prevent from being with and turning over belt grinding machine when connecting lever from rotating.Turn after axle milled when one, stop, plate is taken out, belt sander can be winched to another shelves and turn axle.Until whole a plurality of bent axles of bent axle are completed one by one.If needed, also grinding together of the main shaft at center.
The disclosed technological means of the present invention program is not limited only to the disclosed technological means of above-described embodiment, also comprises by above technical characterictic and is equal to the technical scheme that replacement forms.Unaccomplished matter of the present invention, belongs to those skilled in the art's common practise.
Claims (4)
1. a bent axle abrasive band grinding machine, it is characterized in that: comprise inverted U housing, abrasive band grinding machine is installed in described inverted U housing the inside, described abrasive band grinding machine comprises the abrasive band spool that is arranged on respectively inverted U lower housing portion both sides, abrasive band is walked around the contact roller that is positioned at inverted U housing top and is wrapped on the abrasive band spool of inverted U lower housing portion both sides, and the abrasive band spool described in each connects CD-ROM drive motor.
2. bent axle according to claim 1 abrasive band grinding machine, it is characterized in that: below described inverted U housing top, there is opening, described abrasive band passes inverted U housing at opening place, and described contact roller is arranged on the opening place on inverted U housing top and is positioned at top, abrasive band and compresses abrasive band.
3. bent axle according to claim 1 and 2 abrasive band grinding machine, is characterized in that: described inverted U housing middle part is provided with baffle plate, and described baffle plate is connected to described inverted U housing middle part by bolt or latch.
4. bent axle according to claim 1 and 2 abrasive band grinding machine, is characterized in that: the motor described in two is equal in weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410104579.6A CN103949958B (en) | 2014-03-20 | 2014-03-20 | Bent axle abrasive belt grinding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410104579.6A CN103949958B (en) | 2014-03-20 | 2014-03-20 | Bent axle abrasive belt grinding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103949958A true CN103949958A (en) | 2014-07-30 |
| CN103949958B CN103949958B (en) | 2017-06-06 |
Family
ID=51327379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410104579.6A Active CN103949958B (en) | 2014-03-20 | 2014-03-20 | Bent axle abrasive belt grinding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103949958B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1119138A (en) * | 1995-05-26 | 1996-03-27 | 清华大学 | Soft-elastic dressing method for diamond grinding wheel |
| JP2001054849A (en) * | 1999-08-12 | 2001-02-27 | Yamato Giken:Kk | Polishing device |
| CN102152197A (en) * | 2010-12-23 | 2011-08-17 | 潘旭华 | Cam shaft grinding method |
| CN202207945U (en) * | 2011-07-27 | 2012-05-02 | 河南兴华机械制造有限公司 | Crankshaft sanding device |
| CN103056748A (en) * | 2011-10-19 | 2013-04-24 | 黄秀英 | Steel tube cylindrical grinding device |
| CN203109766U (en) * | 2013-03-01 | 2013-08-07 | 重庆歇马机械曲轴有限公司 | Crankshaft oil seal spiral line grinding device |
-
2014
- 2014-03-20 CN CN201410104579.6A patent/CN103949958B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1119138A (en) * | 1995-05-26 | 1996-03-27 | 清华大学 | Soft-elastic dressing method for diamond grinding wheel |
| JP2001054849A (en) * | 1999-08-12 | 2001-02-27 | Yamato Giken:Kk | Polishing device |
| CN102152197A (en) * | 2010-12-23 | 2011-08-17 | 潘旭华 | Cam shaft grinding method |
| CN202207945U (en) * | 2011-07-27 | 2012-05-02 | 河南兴华机械制造有限公司 | Crankshaft sanding device |
| CN103056748A (en) * | 2011-10-19 | 2013-04-24 | 黄秀英 | Steel tube cylindrical grinding device |
| CN203109766U (en) * | 2013-03-01 | 2013-08-07 | 重庆歇马机械曲轴有限公司 | Crankshaft oil seal spiral line grinding device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103949958B (en) | 2017-06-06 |
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